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vim/src/mbyte.c
Bram Moolenaar 051b782fa0 updated for version 7.0073
2005-05-19 21:00:46 +00:00

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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
* Multibyte extensions partly by Sung-Hoon Baek
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* mbyte.c: Code specifically for handling multi-byte characters.
*
* The encoding used in the core is set with 'encoding'. When 'encoding' is
* changed, the following four variables are set (for speed).
* Currently these types of character encodings are supported:
*
* "enc_dbcs" When non-zero it tells the type of double byte character
* encoding (Chinese, Korean, Japanese, etc.).
* The cell width on the display is equal to the number of
* bytes. (exception: DBCS_JPNU with first byte 0x8e)
* Recognizing the first or second byte is difficult, it
* requires checking a byte sequence from the start.
* "enc_utf8" When TRUE use Unicode characters in UTF-8 encoding.
* The cell width on the display needs to be determined from
* the character value.
* Recognizing bytes is easy: 0xxx.xxxx is a single-byte
* char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading
* byte of a multi-byte character.
* To make things complicated, up to two composing characters
* are allowed. These are drawn on top of the first char.
* For most editing the sequence of bytes with composing
* characters included is considered to be one character.
* "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16).
* When 4 use 32-but Unicode characters.
* Internally characters are stored in UTF-8 encoding to
* avoid NUL bytes. Conversion happens when doing I/O.
* "enc_utf8" will also be TRUE.
*
* "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero.
*
* If none of these is TRUE, 8-bit bytes are used for a character. The
* encoding isn't currently specified (TODO).
*
* 'encoding' specifies the encoding used in the core. This is in registers,
* text manipulation, buffers, etc. Conversion has to be done when characters
* in another encoding are received or send:
*
* clipboard
* ^
* | (2)
* V
* +---------------+
* (1) | | (3)
* keyboard ----->| core |-----> display
* | |
* +---------------+
* ^
* | (4)
* V
* file
*
* (1) Typed characters arrive in the current locale. Conversion is to be
* done when 'encoding' is different from 'termencoding'.
* (2) Text will be made available with the encoding specified with
* 'encoding'. If this is not sufficient, system-specific conversion
* might be required.
* (3) For the GUI the correct font must be selected, no conversion done.
* Otherwise, conversion is to be done when 'encoding' differs from
* 'termencoding'. (Different in the GTK+ 2 port -- 'termencoding'
* is always used for both input and output and must always be set to
* "utf-8". gui_mch_init() does this automatically.)
* (4) The encoding of the file is specified with 'fileencoding'. Conversion
* is to be done when it's different from 'encoding'.
*
* The viminfo file is a special case: Only text is converted, not file names.
* Vim scripts may contain an ":encoding" command. This has an effect for
* some commands, like ":menutrans"
*/
#include "vim.h"
#ifdef WIN32UNIX
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef WIN32
# undef WIN32 /* Some windows.h define WIN32, we don't want that here. */
# endif
#endif
#if (defined(WIN3264) || defined(WIN32UNIX)) && !defined(__MINGW32__)
# include <winnls.h>
#endif
#ifdef FEAT_GUI_X11
# include <X11/Intrinsic.h>
#endif
#ifdef X_LOCALE
#include <X11/Xlocale.h>
#endif
#if defined(FEAT_XIM) && defined(HAVE_GTK2)
# include <gdk/gdkkeysyms.h>
# ifdef WIN3264
# include <gdk/gdkwin32.h>
# else
# include <gdk/gdkx.h>
# endif
#endif
#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif
#if 0
/* This has been disabled, because several people reported problems with the
* wcwidth() and iswprint() library functions, esp. for Hebrew. */
# ifdef __STDC_ISO_10646__
# define USE_WCHAR_FUNCTIONS
# endif
#endif
#if defined(FEAT_MBYTE) || defined(PROTO)
static int enc_canon_search __ARGS((char_u *name));
static int dbcs_char2len __ARGS((int c));
static int dbcs_char2bytes __ARGS((int c, char_u *buf));
static int dbcs_ptr2len_check __ARGS((char_u *p));
static int dbcs_char2cells __ARGS((int c));
static int dbcs_ptr2char __ARGS((char_u *p));
/* Lookup table to quickly get the length in bytes of a UTF-8 character from
* the first byte of a UTF-8 string. Bytes which are illegal when used as the
* first byte have a one, because these will be used separately. */
static char utf8len_tab[256] =
{
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /*bogus*/
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /*bogus*/
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1,
};
/*
* XIM often causes trouble. Define XIM_DEBUG to get a log of XIM callbacks
* in the "xim.log" file.
*/
/* #define XIM_DEBUG */
#ifdef XIM_DEBUG
static void
xim_log(char *s, ...)
{
va_list arglist;
static FILE *fd = NULL;
if (fd == (FILE *)-1)
return;
if (fd == NULL)
{
fd = fopen("xim.log", "w");
if (fd == NULL)
{
EMSG("Cannot open xim.log");
fd = (FILE *)-1;
return;
}
}
va_start(arglist, s);
vfprintf(fd, s, arglist);
va_end(arglist);
}
#endif
#endif
#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO)
/*
* Canonical encoding names and their properties.
* "iso-8859-n" is handled by enc_canonize() directly.
*/
static struct
{ char *name; int prop; int codepage;}
enc_canon_table[] =
{
#define IDX_LATIN_1 0
{"latin1", ENC_8BIT + ENC_LATIN1, 1252},
#define IDX_ISO_2 1
{"iso-8859-2", ENC_8BIT, 0},
#define IDX_ISO_3 2
{"iso-8859-3", ENC_8BIT, 0},
#define IDX_ISO_4 3
{"iso-8859-4", ENC_8BIT, 0},
#define IDX_ISO_5 4
{"iso-8859-5", ENC_8BIT, 0},
#define IDX_ISO_6 5
{"iso-8859-6", ENC_8BIT, 0},
#define IDX_ISO_7 6
{"iso-8859-7", ENC_8BIT, 0},
#define IDX_CP1255 7
{"cp1255", ENC_8BIT, 1255}, /* close to iso-8859-8 */
#define IDX_ISO_8 8
{"iso-8859-8", ENC_8BIT, 0},
#define IDX_ISO_9 9
{"iso-8859-9", ENC_8BIT, 0},
#define IDX_ISO_10 10
{"iso-8859-10", ENC_8BIT, 0},
#define IDX_ISO_11 11
{"iso-8859-11", ENC_8BIT, 0},
#define IDX_ISO_13 12
{"iso-8859-13", ENC_8BIT, 0},
#define IDX_ISO_14 13
{"iso-8859-14", ENC_8BIT, 0},
#define IDX_ISO_15 14
{"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0},
#define IDX_KOI8_R 15
{"koi8-r", ENC_8BIT, 0},
#define IDX_KOI8_U 16
{"koi8-u", ENC_8BIT, 0},
#define IDX_UTF8 17
{"utf-8", ENC_UNICODE, 0},
#define IDX_UCS2 18
{"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0},
#define IDX_UCS2LE 19
{"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0},
#define IDX_UTF16 20
{"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0},
#define IDX_UTF16LE 21
{"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0},
#define IDX_UCS4 22
{"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0},
#define IDX_UCS4LE 23
{"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0},
#define IDX_DEBUG 24
{"debug", ENC_DBCS, DBCS_DEBUG},
#define IDX_CP932 25
{"cp932", ENC_DBCS, DBCS_JPN},
#define IDX_CP949 26
{"cp949", ENC_DBCS, DBCS_KOR},
#define IDX_CP936 27
{"cp936", ENC_DBCS, DBCS_CHS},
#define IDX_CP950 28
{"cp950", ENC_DBCS, DBCS_CHT},
#define IDX_EUC_JP 29
{"euc-jp", ENC_DBCS, DBCS_JPNU},
#define IDX_SJIS 30
{"sjis", ENC_DBCS, DBCS_JPN},
#define IDX_EUC_KR 31
{"euc-kr", ENC_DBCS, DBCS_KORU},
#define IDX_EUC_CN 32
{"euc-cn", ENC_DBCS, DBCS_CHSU},
#define IDX_EUC_TW 33
{"euc-tw", ENC_DBCS, DBCS_CHTU},
#define IDX_BIG5 34
{"big5", ENC_DBCS, DBCS_CHT},
#define IDX_CP1251 35
{"cp1251", ENC_8BIT, 1251},
#define IDX_MACROMAN 36
{"macroman", ENC_8BIT + ENC_MACROMAN, 0},
#define IDX_COUNT 37
};
/*
* Aliases for encoding names.
*/
static struct
{ char *name; int canon;}
enc_alias_table[] =
{
{"ansi", IDX_LATIN_1},
{"iso-8859-1", IDX_LATIN_1},
{"latin2", IDX_ISO_2},
{"latin3", IDX_ISO_3},
{"latin4", IDX_ISO_4},
{"cyrillic", IDX_ISO_5},
{"arabic", IDX_ISO_6},
{"greek", IDX_ISO_7},
#ifdef WIN3264
{"hebrew", IDX_CP1255},
#else
{"hebrew", IDX_ISO_8},
#endif
{"latin5", IDX_ISO_9},
{"turkish", IDX_ISO_9}, /* ? */
{"latin6", IDX_ISO_10},
{"nordic", IDX_ISO_10}, /* ? */
{"thai", IDX_ISO_11}, /* ? */
{"latin7", IDX_ISO_13},
{"latin8", IDX_ISO_14},
{"latin9", IDX_ISO_15},
{"utf8", IDX_UTF8},
{"unicode", IDX_UCS2},
{"ucs2", IDX_UCS2},
{"ucs2be", IDX_UCS2},
{"ucs-2be", IDX_UCS2},
{"ucs2le", IDX_UCS2LE},
{"utf16", IDX_UTF16},
{"utf16be", IDX_UTF16},
{"utf-16be", IDX_UTF16},
{"utf16le", IDX_UTF16LE},
{"ucs4", IDX_UCS4},
{"ucs4be", IDX_UCS4},
{"ucs-4be", IDX_UCS4},
{"ucs4le", IDX_UCS4LE},
{"932", IDX_CP932},
{"949", IDX_CP949},
{"936", IDX_CP936},
{"950", IDX_CP950},
{"eucjp", IDX_EUC_JP},
{"unix-jis", IDX_EUC_JP},
{"ujis", IDX_EUC_JP},
{"shift-jis", IDX_SJIS},
{"euckr", IDX_EUC_KR},
{"5601", IDX_EUC_KR}, /* Sun: KS C 5601 */
{"euccn", IDX_EUC_CN},
{"gb2312", IDX_EUC_CN},
{"euctw", IDX_EUC_TW},
#if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS)
{"japan", IDX_CP932},
{"korea", IDX_CP949},
{"prc", IDX_CP936},
{"chinese", IDX_CP936},
{"taiwan", IDX_CP950},
{"big5", IDX_CP950},
#else
{"japan", IDX_EUC_JP},
{"korea", IDX_EUC_KR},
{"prc", IDX_EUC_CN},
{"chinese", IDX_EUC_CN},
{"taiwan", IDX_EUC_TW},
{"cp950", IDX_BIG5},
{"950", IDX_BIG5},
#endif
{"mac", IDX_MACROMAN},
{NULL, 0}
};
#ifndef CP_UTF8
# define CP_UTF8 65001 /* magic number from winnls.h */
#endif
/*
* Find encoding "name" in the list of canonical encoding names.
* Returns -1 if not found.
*/
static int
enc_canon_search(name)
char_u *name;
{
int i;
for (i = 0; i < IDX_COUNT; ++i)
if (STRCMP(name, enc_canon_table[i].name) == 0)
return i;
return -1;
}
#endif
#if defined(FEAT_MBYTE) || defined(PROTO)
/*
* Find canonical encoding "name" in the list and return its properties.
* Returns 0 if not found.
*/
int
enc_canon_props(name)
char_u *name;
{
int i;
i = enc_canon_search(name);
if (i >= 0)
return enc_canon_table[i].prop;
#ifdef WIN3264
if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2]))
{
CPINFO cpinfo;
/* Get info on this codepage to find out what it is. */
if (GetCPInfo(atoi(name + 2), &cpinfo) != 0)
{
if (cpinfo.MaxCharSize == 1) /* some single-byte encoding */
return ENC_8BIT;
if (cpinfo.MaxCharSize == 2
&& (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
/* must be a DBCS encoding */
return ENC_DBCS;
}
return 0;
}
#endif
if (STRNCMP(name, "2byte-", 6) == 0)
return ENC_DBCS;
if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0)
return ENC_8BIT;
return 0;
}
/*
* Set up for using multi-byte characters.
* Called in three cases:
* - by main() to initialize (p_enc == NULL)
* - by set_init_1() after 'encoding' was set to its default.
* - by do_set() when 'encoding' has been set.
* p_enc must have been passed through enc_canonize() already.
* Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags.
* Fills mb_bytelen_tab[] and returns NULL when there are no problems.
* When there is something wrong: Returns an error message and doesn't change
* anything.
*/
char_u *
mb_init()
{
int i;
int idx;
int n;
int enc_dbcs_new = 0;
#if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \
&& !defined(MACOS)
# define LEN_FROM_CONV
vimconv_T vimconv;
char_u *p;
#endif
#ifdef WIN32
int prev_enc_utf8 = enc_utf8;
#endif
if (p_enc == NULL)
{
/* Just starting up: set the whole table to one's. */
for (i = 0; i < 256; ++i)
mb_bytelen_tab[i] = 1;
input_conv.vc_type = CONV_NONE;
input_conv.vc_factor = 1;
output_conv.vc_type = CONV_NONE;
return NULL;
}
#ifdef WIN3264
if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2]))
{
CPINFO cpinfo;
/* Get info on this codepage to find out what it is. */
if (GetCPInfo(atoi(p_enc + 2), &cpinfo) != 0)
{
if (cpinfo.MaxCharSize == 1)
{
/* some single-byte encoding */
enc_unicode = 0;
enc_utf8 = FALSE;
}
else if (cpinfo.MaxCharSize == 2
&& (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0))
{
/* must be a DBCS encoding, check below */
enc_dbcs_new = atoi(p_enc + 2);
}
else
goto codepage_invalid;
}
else if (GetLastError() == ERROR_INVALID_PARAMETER)
{
codepage_invalid:
return (char_u *)N_("E543: Not a valid codepage");
}
}
#endif
else if (STRNCMP(p_enc, "8bit-", 5) == 0
|| STRNCMP(p_enc, "iso-8859-", 9) == 0)
{
/* Accept any "8bit-" or "iso-8859-" name. */
enc_unicode = 0;
enc_utf8 = FALSE;
}
else if (STRNCMP(p_enc, "2byte-", 6) == 0)
{
#ifdef WIN3264
/* Windows: accept only valid codepage numbers, check below. */
if (p_enc[6] != 'c' || p_enc[7] != 'p'
|| (enc_dbcs_new = atoi(p_enc + 8)) == 0)
return e_invarg;
#else
/* Unix: accept any "2byte-" name, assume current locale. */
enc_dbcs_new = DBCS_2BYTE;
#endif
}
else if ((idx = enc_canon_search(p_enc)) >= 0)
{
i = enc_canon_table[idx].prop;
if (i & ENC_UNICODE)
{
/* Unicode */
enc_utf8 = TRUE;
if (i & (ENC_2BYTE | ENC_2WORD))
enc_unicode = 2;
else if (i & ENC_4BYTE)
enc_unicode = 4;
else
enc_unicode = 0;
}
else if (i & ENC_DBCS)
{
/* 2byte, handle below */
enc_dbcs_new = enc_canon_table[idx].codepage;
}
else
{
/* Must be 8-bit. */
enc_unicode = 0;
enc_utf8 = FALSE;
}
}
else /* Don't know what encoding this is, reject it. */
return e_invarg;
if (enc_dbcs_new != 0)
{
#ifdef WIN3264
/* Check if the DBCS code page is OK. */
if (!IsValidCodePage(enc_dbcs_new))
goto codepage_invalid;
#endif
enc_unicode = 0;
enc_utf8 = FALSE;
}
enc_dbcs = enc_dbcs_new;
has_mbyte = (enc_dbcs != 0 || enc_utf8);
#ifdef WIN3264
enc_codepage = encname2codepage(p_enc);
enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0);
#endif
/*
* Set the function pointers.
*/
if (enc_utf8)
{
mb_ptr2len_check = utfc_ptr2len_check;
mb_char2len = utf_char2len;
mb_char2bytes = utf_char2bytes;
mb_ptr2cells = utf_ptr2cells;
mb_char2cells = utf_char2cells;
mb_off2cells = utf_off2cells;
mb_ptr2char = utf_ptr2char;
mb_head_off = utf_head_off;
}
else if (enc_dbcs != 0)
{
mb_ptr2len_check = dbcs_ptr2len_check;
mb_char2len = dbcs_char2len;
mb_char2bytes = dbcs_char2bytes;
mb_ptr2cells = dbcs_ptr2cells;
mb_char2cells = dbcs_char2cells;
mb_off2cells = dbcs_off2cells;
mb_ptr2char = dbcs_ptr2char;
mb_head_off = dbcs_head_off;
}
else
{
mb_ptr2len_check = latin_ptr2len_check;
mb_char2len = latin_char2len;
mb_char2bytes = latin_char2bytes;
mb_ptr2cells = latin_ptr2cells;
mb_char2cells = latin_char2cells;
mb_off2cells = latin_off2cells;
mb_ptr2char = latin_ptr2char;
mb_head_off = latin_head_off;
}
/*
* Fill the mb_bytelen_tab[] for MB_BYTE2LEN().
*/
#ifdef LEN_FROM_CONV
/* When 'encoding' is different from the current locale mblen() won't
* work. Use conversion to "utf-8" instead. */
vimconv.vc_type = CONV_NONE;
if (enc_dbcs)
{
p = enc_locale();
if (p == NULL || STRCMP(p, p_enc) != 0)
{
convert_setup(&vimconv, p_enc, (char_u *)"utf-8");
vimconv.vc_fail = TRUE;
}
vim_free(p);
}
#endif
for (i = 0; i < 256; ++i)
{
/* Our own function to reliably check the length of UTF-8 characters,
* independent of mblen(). */
if (enc_utf8)
n = utf8len_tab[i];
else if (enc_dbcs == 0)
n = 1;
else
{
#if defined(WIN3264) || defined(WIN32UNIX)
/* enc_dbcs is set by setting 'fileencoding'. It becomes a Windows
* CodePage identifier, which we can pass directly in to Windows
* API */
n = IsDBCSLeadByteEx(enc_dbcs, (BYTE)i) ? 2 : 1;
#else
# ifdef MACOS
/*
* if mblen() is not available, character which MSB is turned on
* are treated as leading byte character. (note : This assumption
* is not always true.)
*/
n = (i & 0x80) ? 2 : 1;
# else
char buf[MB_MAXBYTES];
# ifdef X_LOCALE
# ifndef mblen
# define mblen _Xmblen
# endif
# endif
if (i == NUL) /* just in case mblen() can't handle "" */
n = 1;
else
{
buf[0] = i;
buf[1] = 0;
#ifdef LEN_FROM_CONV
if (vimconv.vc_type != CONV_NONE)
{
/*
* string_convert() should fail when converting the first
* byte of a double-byte character.
*/
p = string_convert(&vimconv, (char_u *)buf, NULL);
if (p != NULL)
{
vim_free(p);
n = 1;
}
else
n = 2;
}
else
#endif
{
/*
* mblen() should return -1 for invalid (means the leading
* multibyte) character. However there are some platforms
* where mblen() returns 0 for invalid character.
* Therefore, following condition includes 0.
*/
if (mblen(buf, (size_t)1) <= 0)
n = 2;
else
n = 1;
}
}
# endif
#endif
}
mb_bytelen_tab[i] = n;
}
#ifdef LEN_FROM_CONV
convert_setup(&vimconv, NULL, NULL);
#endif
/* The cell width depends on the type of multi-byte characters. */
(void)init_chartab();
/* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */
screenalloc(FALSE);
/* When using Unicode, set default for 'fileencodings'. */
if (enc_utf8 && !option_was_set((char_u *)"fencs"))
set_string_option_direct((char_u *)"fencs", -1,
(char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE);
#if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT)
/* GNU gettext 0.10.37 supports this feature: set the codeset used for
* translated messages independently from the current locale. */
(void)bind_textdomain_codeset(VIMPACKAGE,
enc_utf8 ? "utf-8" : (char *)p_enc);
#endif
#ifdef WIN32
/* When changing 'encoding' while starting up, then convert the command
* line arguments from the active codepage to 'encoding'. */
if (starting != 0)
fix_arg_enc();
#endif
#ifdef FEAT_AUTOCMD
/* Fire an autocommand to let people do custom font setup. This must be
* after Vim has been setup for the new encoding. */
apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf);
#endif
#ifdef FEAT_GUI_KDE
if (gui.in_use)
gui_mch_update_codec();
#endif
#ifdef FEAT_SYN_HL
/* Need to reload spell dictionaries */
spell_reload();
#endif
return NULL;
}
/*
* Return the size of the BOM for the current buffer:
* 0 - no BOM
* 2 - UCS-2 or UTF-16 BOM
* 4 - UCS-4 BOM
* 3 - UTF-8 BOM
*/
int
bomb_size()
{
int n = 0;
if (curbuf->b_p_bomb && !curbuf->b_p_bin)
{
if (*curbuf->b_p_fenc == NUL)
{
if (enc_utf8)
{
if (enc_unicode != 0)
n = enc_unicode;
else
n = 3;
}
}
else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0)
n = 3;
else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0
|| STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0)
n = 2;
else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0)
n = 4;
}
return n;
}
/*
* Get class of pointer:
* 0 for blank or NUL
* 1 for punctuation
* 2 for an (ASCII) word character
* >2 for other word characters
*/
int
mb_get_class(p)
char_u *p;
{
if (MB_BYTE2LEN(p[0]) == 1)
{
if (p[0] == NUL || vim_iswhite(p[0]))
return 0;
if (vim_iswordc(p[0]))
return 2;
return 1;
}
if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL)
return dbcs_class(p[0], p[1]);
if (enc_utf8)
return utf_class(utf_ptr2char(p));
return 0;
}
/*
* Get class of a double-byte character. This always returns 3 or bigger.
* TODO: Should return 1 for punctuation.
*/
int
dbcs_class(lead, trail)
unsigned lead;
unsigned trail;
{
switch (enc_dbcs)
{
/* please add classfy routine for your language in here */
case DBCS_JPNU: /* ? */
case DBCS_JPN:
{
/* JIS code classification */
unsigned char lb = lead;
unsigned char tb = trail;
/* convert process code to JIS */
# if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS)
/* process code is SJIS */
if (lb <= 0x9f)
lb = (lb - 0x81) * 2 + 0x21;
else
lb = (lb - 0xc1) * 2 + 0x21;
if (tb <= 0x7e)
tb -= 0x1f;
else if (tb <= 0x9e)
tb -= 0x20;
else
{
tb -= 0x7e;
lb += 1;
}
# else
/*
* XXX: Code page identification can not use with all
* system! So, some other encoding information
* will be needed.
* In japanese: SJIS,EUC,UNICODE,(JIS)
* Note that JIS-code system don't use as
* process code in most system because it uses
* escape sequences(JIS is context depend encoding).
*/
/* assume process code is JAPANESE-EUC */
lb &= 0x7f;
tb &= 0x7f;
# endif
/* exceptions */
switch (lb << 8 | tb)
{
case 0x2121: /* ZENKAKU space */
return 0;
case 0x2122: /* KU-TEN (Japanese comma) */
case 0x2123: /* TOU-TEN (Japanese period) */
case 0x2124: /* ZENKAKU comma */
case 0x2125: /* ZENKAKU period */
return 1;
case 0x213c: /* prolongedsound handled as KATAKANA */
return 13;
}
/* sieved by KU code */
switch (lb)
{
case 0x21:
case 0x22:
/* special symbols */
return 10;
case 0x23:
/* alpha-numeric */
return 11;
case 0x24:
/* hiragana */
return 12;
case 0x25:
/* katakana */
return 13;
case 0x26:
/* greek */
return 14;
case 0x27:
/* russian */
return 15;
case 0x28:
/* lines */
return 16;
default:
/* kanji */
return 17;
}
}
case DBCS_KORU: /* ? */
case DBCS_KOR:
{
/* KS code classification */
unsigned char c1 = lead;
unsigned char c2 = trail;
/*
* 20 : Hangul
* 21 : Hanja
* 22 : Symbols
* 23 : Alpha-numeric/Roman Letter (Full width)
* 24 : Hangul Letter(Alphabet)
* 25 : Roman Numeral/Greek Letter
* 26 : Box Drawings
* 27 : Unit Symbols
* 28 : Circled/Parenthesized Letter
* 29 : Hirigana/Katakana
* 30 : Cyrillic Letter
*/
if (c1 >= 0xB0 && c1 <= 0xC8)
/* Hangul */
return 20;
#if defined(WIN3264) || defined(WIN32UNIX)
else if (c1 <= 0xA0 || c2 <= 0xA0)
/* Extended Hangul Region : MS UHC(Unified Hangul Code) */
/* c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE
* c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0
*/
return 20;
#endif
else if (c1 >= 0xCA && c1 <= 0xFD)
/* Hanja */
return 21;
else switch (c1)
{
case 0xA1:
case 0xA2:
/* Symbols */
return 22;
case 0xA3:
/* Alpha-numeric */
return 23;
case 0xA4:
/* Hangul Letter(Alphabet) */
return 24;
case 0xA5:
/* Roman Numeral/Greek Letter */
return 25;
case 0xA6:
/* Box Drawings */
return 26;
case 0xA7:
/* Unit Symbols */
return 27;
case 0xA8:
case 0xA9:
if (c2 <= 0xAF)
return 25; /* Roman Letter */
else if (c2 >= 0xF6)
return 22; /* Symbols */
else
/* Circled/Parenthesized Letter */
return 28;
case 0xAA:
case 0xAB:
/* Hirigana/Katakana */
return 29;
case 0xAC:
/* Cyrillic Letter */
return 30;
}
}
default:
break;
}
return 3;
}
/*
* mb_char2len() function pointer.
* Return length in bytes of character "c".
* Returns 1 for a single-byte character.
*/
/* ARGSUSED */
int
latin_char2len(c)
int c;
{
return 1;
}
static int
dbcs_char2len(c)
int c;
{
if (c >= 0x100)
return 2;
return 1;
}
/*
* mb_char2bytes() function pointer.
* Convert a character to its bytes.
* Returns the length in bytes.
*/
int
latin_char2bytes(c, buf)
int c;
char_u *buf;
{
buf[0] = c;
return 1;
}
static int
dbcs_char2bytes(c, buf)
int c;
char_u *buf;
{
if (c >= 0x100)
{
buf[0] = (unsigned)c >> 8;
buf[1] = c;
/* Never use a NUL byte, it causes lots of trouble. It's an invalid
* character anyway. */
if (buf[1] == NUL)
buf[1] = '\n';
return 2;
}
buf[0] = c;
return 1;
}
/*
* mb_ptr2len_check() function pointer.
* Get byte length of character at "*p" but stop at a NUL.
* For UTF-8 this includes following composing characters.
* Returns 0 when *p is NUL.
*
*/
int
latin_ptr2len_check(p)
char_u *p;
{
return MB_BYTE2LEN(*p);
}
static int
dbcs_ptr2len_check(p)
char_u *p;
{
int len;
/* Check if second byte is not missing. */
len = MB_BYTE2LEN(*p);
if (len == 2 && p[1] == NUL)
len = 1;
return len;
}
struct interval
{
unsigned short first;
unsigned short last;
};
static int intable __ARGS((struct interval *table, size_t size, int c));
/*
* Return TRUE if "c" is in "table[size / sizeof(struct interval)]".
*/
static int
intable(table, size, c)
struct interval *table;
size_t size;
int c;
{
int mid, bot, top;
/* first quick check for Latin1 etc. characters */
if (c < table[0].first)
return FALSE;
/* binary search in table */
bot = 0;
top = size / sizeof(struct interval) - 1;
while (top >= bot)
{
mid = (bot + top) / 2;
if (table[mid].last < c)
bot = mid + 1;
else if (table[mid].first > c)
top = mid - 1;
else
return TRUE;
}
return FALSE;
}
/*
* For UTF-8 character "c" return 2 for a double-width character, 1 for others.
* Returns 4 or 6 for an unprintable character.
* Is only correct for characters >= 0x80.
* When p_ambw is "double", return 2 for a character with East Asian Width
* class 'A'(mbiguous).
*/
int
utf_char2cells(c)
int c;
{
/* sorted list of non-overlapping intervals of East Asian Ambiguous
* characters, generated with:
* "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */
static struct interval ambiguous[] = {
{0x00A1, 0x00A1}, {0x00A4, 0x00A4}, {0x00A7, 0x00A8},
{0x00AA, 0x00AA}, {0x00AE, 0x00AE}, {0x00B0, 0x00B4},
{0x00B6, 0x00BA}, {0x00BC, 0x00BF}, {0x00C6, 0x00C6},
{0x00D0, 0x00D0}, {0x00D7, 0x00D8}, {0x00DE, 0x00E1},
{0x00E6, 0x00E6}, {0x00E8, 0x00EA}, {0x00EC, 0x00ED},
{0x00F0, 0x00F0}, {0x00F2, 0x00F3}, {0x00F7, 0x00FA},
{0x00FC, 0x00FC}, {0x00FE, 0x00FE}, {0x0101, 0x0101},
{0x0111, 0x0111}, {0x0113, 0x0113}, {0x011B, 0x011B},
{0x0126, 0x0127}, {0x012B, 0x012B}, {0x0131, 0x0133},
{0x0138, 0x0138}, {0x013F, 0x0142}, {0x0144, 0x0144},
{0x0148, 0x014B}, {0x014D, 0x014D}, {0x0152, 0x0153},
{0x0166, 0x0167}, {0x016B, 0x016B}, {0x01CE, 0x01CE},
{0x01D0, 0x01D0}, {0x01D2, 0x01D2}, {0x01D4, 0x01D4},
{0x01D6, 0x01D6}, {0x01D8, 0x01D8}, {0x01DA, 0x01DA},
{0x01DC, 0x01DC}, {0x0251, 0x0251}, {0x0261, 0x0261},
{0x02C4, 0x02C4}, {0x02C7, 0x02C7}, {0x02C9, 0x02CB},
{0x02CD, 0x02CD}, {0x02D0, 0x02D0}, {0x02D8, 0x02DB},
{0x02DD, 0x02DD}, {0x02DF, 0x02DF}, {0x0391, 0x03A1},
{0x03A3, 0x03A9}, {0x03B1, 0x03C1}, {0x03C3, 0x03C9},
{0x0401, 0x0401}, {0x0410, 0x044F}, {0x0451, 0x0451},
{0x2010, 0x2010}, {0x2013, 0x2016}, {0x2018, 0x2019},
{0x201C, 0x201D}, {0x2020, 0x2022}, {0x2024, 0x2027},
{0x2030, 0x2030}, {0x2032, 0x2033}, {0x2035, 0x2035},
{0x203B, 0x203B}, {0x203E, 0x203E}, {0x2074, 0x2074},
{0x207F, 0x207F}, {0x2081, 0x2084}, {0x20AC, 0x20AC},
{0x2103, 0x2103}, {0x2105, 0x2105}, {0x2109, 0x2109},
{0x2113, 0x2113}, {0x2116, 0x2116}, {0x2121, 0x2122},
{0x2126, 0x2126}, {0x212B, 0x212B}, {0x2153, 0x2154},
{0x215B, 0x215E}, {0x2160, 0x216B}, {0x2170, 0x2179},
{0x2190, 0x2199}, {0x21B8, 0x21B9}, {0x21D2, 0x21D2},
{0x21D4, 0x21D4}, {0x21E7, 0x21E7}, {0x2200, 0x2200},
{0x2202, 0x2203}, {0x2207, 0x2208}, {0x220B, 0x220B},
{0x220F, 0x220F}, {0x2211, 0x2211}, {0x2215, 0x2215},
{0x221A, 0x221A}, {0x221D, 0x2220}, {0x2223, 0x2223},
{0x2225, 0x2225}, {0x2227, 0x222C}, {0x222E, 0x222E},
{0x2234, 0x2237}, {0x223C, 0x223D}, {0x2248, 0x2248},
{0x224C, 0x224C}, {0x2252, 0x2252}, {0x2260, 0x2261},
{0x2264, 0x2267}, {0x226A, 0x226B}, {0x226E, 0x226F},
{0x2282, 0x2283}, {0x2286, 0x2287}, {0x2295, 0x2295},
{0x2299, 0x2299}, {0x22A5, 0x22A5}, {0x22BF, 0x22BF},
{0x2312, 0x2312}, {0x2460, 0x24E9}, {0x24EB, 0x254B},
{0x2550, 0x2573}, {0x2580, 0x258F}, {0x2592, 0x2595},
{0x25A0, 0x25A1}, {0x25A3, 0x25A9}, {0x25B2, 0x25B3},
{0x25B6, 0x25B7}, {0x25BC, 0x25BD}, {0x25C0, 0x25C1},
{0x25C6, 0x25C8}, {0x25CB, 0x25CB}, {0x25CE, 0x25D1},
{0x25E2, 0x25E5}, {0x25EF, 0x25EF}, {0x2605, 0x2606},
{0x2609, 0x2609}, {0x260E, 0x260F}, {0x2614, 0x2615},
{0x261C, 0x261C}, {0x261E, 0x261E}, {0x2640, 0x2640},
{0x2642, 0x2642}, {0x2660, 0x2661}, {0x2663, 0x2665},
{0x2667, 0x266A}, {0x266C, 0x266D}, {0x266F, 0x266F},
{0x273D, 0x273D}, {0x2776, 0x277F}, {0xE000, 0xF8FF},
{0xFFFD, 0xFFFD}, /* {0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD} */
};
if (c >= 0x100)
{
#ifdef USE_WCHAR_FUNCTIONS
/*
* Assume the library function wcwidth() works better than our own
* stuff. It should return 1 for ambiguous width chars!
*/
int n = wcwidth(c);
if (n < 0)
return 6; /* unprintable, displays <xxxx> */
if (n > 1)
return n;
#else
if (!utf_printable(c))
return 6; /* unprintable, displays <xxxx> */
if (c >= 0x1100
&& (c <= 0x115f /* Hangul Jamo */
|| c == 0x2329
|| c == 0x232a
|| (c >= 0x2e80 && c <= 0xa4cf
&& c != 0x303f) /* CJK ... Yi */
|| (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
|| (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility
Ideographs */
|| (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
|| (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
|| (c >= 0xffe0 && c <= 0xffe6)
|| (c >= 0x20000 && c <= 0x2fffd)
|| (c >= 0x30000 && c <= 0x3fffd)))
return 2;
#endif
}
/* Characters below 0x100 are influenced by 'isprint' option */
else if (c >= 0x80 && !vim_isprintc(c))
return 4; /* unprintable, displays <xx> */
if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c))
return 2;
return 1;
}
/*
* mb_ptr2cells() function pointer.
* Return the number of display cells character at "*p" occupies.
* This doesn't take care of unprintable characters, use ptr2cells() for that.
*/
/*ARGSUSED*/
int
latin_ptr2cells(p)
char_u *p;
{
return 1;
}
int
utf_ptr2cells(p)
char_u *p;
{
int c;
/* Need to convert to a wide character. */
if (*p >= 0x80)
{
c = utf_ptr2char(p);
/* An illegal byte is displayed as <xx>. */
if (utf_ptr2len_check(p) == 1 || c == NUL)
return 4;
/* If the char is ASCII it must be an overlong sequence. */
if (c < 0x80)
return char2cells(c);
return utf_char2cells(c);
}
return 1;
}
int
dbcs_ptr2cells(p)
char_u *p;
{
/* Number of cells is equal to number of bytes, except for euc-jp when
* the first byte is 0x8e. */
if (enc_dbcs == DBCS_JPNU && *p == 0x8e)
return 1;
return MB_BYTE2LEN(*p);
}
/*
* mb_char2cells() function pointer.
* Return the number of display cells character "c" occupies.
* Only takes care of multi-byte chars, not "^C" and such.
*/
/*ARGSUSED*/
int
latin_char2cells(c)
int c;
{
return 1;
}
static int
dbcs_char2cells(c)
int c;
{
/* Number of cells is equal to number of bytes, except for euc-jp when
* the first byte is 0x8e. */
if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e)
return 1;
/* use the first byte */
return MB_BYTE2LEN((unsigned)c >> 8);
}
/*
* mb_off2cells() function pointer.
* Return number of display cells for char at ScreenLines[off].
* Caller must make sure "off" and "off + 1" are valid!
*/
/*ARGSUSED*/
int
latin_off2cells(off)
unsigned off;
{
return 1;
}
int
dbcs_off2cells(off)
unsigned off;
{
/* Number of cells is equal to number of bytes, except for euc-jp when
* the first byte is 0x8e. */
if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e)
return 1;
return MB_BYTE2LEN(ScreenLines[off]);
}
int
utf_off2cells(off)
unsigned off;
{
return ScreenLines[off + 1] == 0 ? 2 : 1;
}
/*
* mb_ptr2char() function pointer.
* Convert a byte sequence into a character.
*/
int
latin_ptr2char(p)
char_u *p;
{
return *p;
}
static int
dbcs_ptr2char(p)
char_u *p;
{
if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL)
return (p[0] << 8) + p[1];
return *p;
}
/*
* Convert a UTF-8 byte sequence to a wide character.
* If the sequence is illegal or truncated by a NUL the first byte is
* returned.
* Does not include composing characters, of course.
*/
int
utf_ptr2char(p)
char_u *p;
{
int len;
if (p[0] < 0x80) /* be quick for ASCII */
return p[0];
len = utf8len_tab[p[0]];
if ((p[1] & 0xc0) == 0x80)
{
if (len == 2)
return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f);
if ((p[2] & 0xc0) == 0x80)
{
if (len == 3)
return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6)
+ (p[2] & 0x3f);
if ((p[3] & 0xc0) == 0x80)
{
if (len == 4)
return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12)
+ ((p[2] & 0x3f) << 6) + (p[3] & 0x3f);
if ((p[4] & 0xc0) == 0x80)
{
if (len == 5)
return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18)
+ ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6)
+ (p[4] & 0x3f);
if ((p[5] & 0xc0) == 0x80 && len == 6)
return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24)
+ ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12)
+ ((p[4] & 0x3f) << 6) + (p[5] & 0x3f);
}
}
}
}
/* Illegal value, just return the first byte */
return p[0];
}
/*
* Get character at **pp and advance *pp to the next character.
* Note: composing characters are skipped!
*/
int
mb_ptr2char_adv(pp)
char_u **pp;
{
int c;
c = (*mb_ptr2char)(*pp);
*pp += (*mb_ptr2len_check)(*pp);
return c;
}
#if defined(FEAT_ARABIC) || defined(PROTO)
/*
* Check whether we are dealing with Arabic combining characters.
* Note: these are NOT really composing characters!
*/
int
arabic_combine(one, two)
int one; /* first character */
int two; /* character just after "one" */
{
if (one == a_LAM)
return arabic_maycombine(two);
return FALSE;
}
/*
* Check whether we are dealing with a character that could be regarded as an
* Arabic combining character, need to check the character before this.
*/
int
arabic_maycombine(two)
int two;
{
if (p_arshape && !p_tbidi)
return (two == a_ALEF_MADDA
|| two == a_ALEF_HAMZA_ABOVE
|| two == a_ALEF_HAMZA_BELOW
|| two == a_ALEF);
return FALSE;
}
/*
* Check if the character pointed to by "p2" is a composing character when it
* comes after "p1". For Arabic sometimes "ab" is replaced with "c", which
* behaves like a composing character.
*/
int
utf_composinglike(p1, p2)
char_u *p1;
char_u *p2;
{
int c2;
c2 = utf_ptr2char(p2);
if (utf_iscomposing(c2))
return TRUE;
if (!arabic_maycombine(c2))
return FALSE;
return arabic_combine(utf_ptr2char(p1), c2);
}
#endif
/*
* Convert a UTF-8 byte string to a wide chararacter. Also get up to two
* composing characters.
*/
int
utfc_ptr2char(p, p1, p2)
char_u *p;
int *p1; /* return: first composing char or 0 */
int *p2; /* return: second composing char or 0 */
{
int len;
int c;
int cc;
c = utf_ptr2char(p);
len = utf_ptr2len_check(p);
/* Only accept a composing char when the first char isn't illegal. */
if ((len > 1 || *p < 0x80)
&& p[len] >= 0x80
&& UTF_COMPOSINGLIKE(p, p + len))
{
*p1 = utf_ptr2char(p + len);
len += utf_ptr2len_check(p + len);
if (p[len] >= 0x80 && utf_iscomposing(cc = utf_ptr2char(p + len)))
*p2 = cc;
else
*p2 = 0;
}
else
{
*p1 = 0;
*p2 = 0;
}
return c;
}
/*
* Convert a UTF-8 byte string to a wide chararacter. Also get up to two
* composing characters. Use no more than p[maxlen].
*/
int
utfc_ptr2char_len(p, p1, p2, maxlen)
char_u *p;
int *p1; /* return: first composing char or 0 */
int *p2; /* return: second composing char or 0 */
int maxlen;
{
int len;
int c;
int cc;
c = utf_ptr2char(p);
len = utf_ptr2len_check_len(p, maxlen);
/* Only accept a composing char when the first char isn't illegal. */
if ((len > 1 || *p < 0x80)
&& len < maxlen
&& p[len] >= 0x80
&& UTF_COMPOSINGLIKE(p, p + len))
{
*p1 = utf_ptr2char(p + len);
len += utf_ptr2len_check_len(p + len, maxlen - len);
if (len < maxlen
&& p[len] >= 0x80
&& utf_iscomposing(cc = utf_ptr2char(p + len)))
*p2 = cc;
else
*p2 = 0;
}
else
{
*p1 = 0;
*p2 = 0;
}
return c;
}
/*
* Convert the character at screen position "off" to a sequence of bytes.
* Includes the composing characters.
* "buf" must at least have the length MB_MAXBYTES.
* Returns the produced number of bytes.
*/
int
utfc_char2bytes(off, buf)
int off;
char_u *buf;
{
int len;
len = utf_char2bytes(ScreenLinesUC[off], buf);
if (ScreenLinesC1[off] != 0)
{
len += utf_char2bytes(ScreenLinesC1[off], buf + len);
if (ScreenLinesC2[off] != 0)
len += utf_char2bytes(ScreenLinesC2[off], buf + len);
}
return len;
}
/*
* Get the length of a UTF-8 byte sequence, not including any following
* composing characters.
* Returns 0 for "".
* Returns 1 for an illegal byte sequence.
*/
int
utf_ptr2len_check(p)
char_u *p;
{
int len;
int i;
if (*p == NUL)
return 0;
len = utf8len_tab[*p];
for (i = 1; i < len; ++i)
if ((p[i] & 0xc0) != 0x80)
return 1;
return len;
}
/*
* Return length of UTF-8 character, obtained from the first byte.
* "b" must be between 0 and 255!
*/
int
utf_byte2len(b)
int b;
{
return utf8len_tab[b];
}
/*
* Get the length of UTF-8 byte sequence "p[size]". Does not include any
* following composing characters.
* Returns 1 for "".
* Returns 1 for an illegal byte sequence.
* Returns number > "size" for an incomplete byte sequence.
*/
int
utf_ptr2len_check_len(p, size)
char_u *p;
int size;
{
int len;
int i;
if (*p == NUL)
return 1;
len = utf8len_tab[*p];
if (len > size)
return len; /* incomplete byte sequence. */
for (i = 1; i < len; ++i)
if ((p[i] & 0xc0) != 0x80)
return 1;
return len;
}
/*
* Return the number of bytes the UTF-8 encoding of the character at "p" takes.
* This includes following composing characters.
*/
int
utfc_ptr2len_check(p)
char_u *p;
{
int len;
#ifdef FEAT_ARABIC
int prevlen;
#endif
if (*p == NUL)
return 0;
if (p[0] < 0x80 && p[1] < 0x80) /* be quick for ASCII */
return 1;
/* Skip over first UTF-8 char, stopping at a NUL byte. */
len = utf_ptr2len_check(p);
/* Check for illegal byte. */
if (len == 1 && p[0] >= 0x80)
return 1;
/*
* Check for composing characters. We can handle only the first two, but
* skip all of them (otherwise the cursor would get stuck).
*/
#ifdef FEAT_ARABIC
prevlen = 0;
#endif
for (;;)
{
if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
return len;
/* Skip over composing char */
#ifdef FEAT_ARABIC
prevlen = len;
#endif
len += utf_ptr2len_check(p + len);
}
}
/*
* Return the number of bytes the UTF-8 encoding of the character at "p[size]"
* takes. This includes following composing characters.
* Returns 1 for an illegal char or an incomplete byte sequence.
*/
int
utfc_ptr2len_check_len(p, size)
char_u *p;
int size;
{
int len;
#ifdef FEAT_ARABIC
int prevlen;
#endif
if (*p == NUL)
return 0;
if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */
return 1;
/* Skip over first UTF-8 char, stopping at a NUL byte. */
len = utf_ptr2len_check_len(p, size);
/* Check for illegal byte and incomplete byte sequence. */
if ((len == 1 && p[0] >= 0x80) || len > size)
return 1;
/*
* Check for composing characters. We can handle only the first two, but
* skip all of them (otherwise the cursor would get stuck).
*/
#ifdef FEAT_ARABIC
prevlen = 0;
#endif
while (len < size)
{
if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len))
break;
/* Skip over composing char */
#ifdef FEAT_ARABIC
prevlen = len;
#endif
len += utf_ptr2len_check_len(p + len, size - len);
}
return len;
}
/*
* Return the number of bytes the UTF-8 encoding of character "c" takes.
* This does not include composing characters.
*/
int
utf_char2len(c)
int c;
{
if (c < 0x80)
return 1;
if (c < 0x800)
return 2;
if (c < 0x10000)
return 3;
if (c < 0x200000)
return 4;
if (c < 0x4000000)
return 5;
return 6;
}
/*
* Convert Unicode character "c" to UTF-8 string in "buf[]".
* Returns the number of bytes.
* This does not include composing characters.
*/
int
utf_char2bytes(c, buf)
int c;
char_u *buf;
{
if (c < 0x80) /* 7 bits */
{
buf[0] = c;
return 1;
}
if (c < 0x800) /* 11 bits */
{
buf[0] = 0xc0 + ((unsigned)c >> 6);
buf[1] = 0x80 + (c & 0x3f);
return 2;
}
if (c < 0x10000) /* 16 bits */
{
buf[0] = 0xe0 + ((unsigned)c >> 12);
buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f);
buf[2] = 0x80 + (c & 0x3f);
return 3;
}
if (c < 0x200000) /* 21 bits */
{
buf[0] = 0xf0 + ((unsigned)c >> 18);
buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f);
buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f);
buf[3] = 0x80 + (c & 0x3f);
return 4;
}
if (c < 0x4000000) /* 26 bits */
{
buf[0] = 0xf8 + ((unsigned)c >> 24);
buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f);
buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f);
buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f);
buf[4] = 0x80 + (c & 0x3f);
return 5;
}
/* 31 bits */
buf[0] = 0xfc + ((unsigned)c >> 30);
buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f);
buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f);
buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f);
buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f);
buf[5] = 0x80 + (c & 0x3f);
return 6;
}
/*
* Return TRUE if "c" is a composing UTF-8 character. This means it will be
* drawn on top of the preceding character.
* Based on code from Markus Kuhn.
*/
int
utf_iscomposing(c)
int c;
{
/* sorted list of non-overlapping intervals */
static struct interval combining[] =
{
{0x0300, 0x034f}, {0x0360, 0x036f}, {0x0483, 0x0486}, {0x0488, 0x0489},
{0x0591, 0x05a1}, {0x05a3, 0x05b9}, {0x05bb, 0x05bd}, {0x05bf, 0x05bf},
{0x05c1, 0x05c2}, {0x05c4, 0x05c4}, {0x0610, 0x0615}, {0x064b, 0x0658},
{0x0670, 0x0670}, {0x06d6, 0x06dc}, {0x06de, 0x06e4}, {0x06e7, 0x06e8},
{0x06ea, 0x06ed}, {0x0711, 0x0711}, {0x0730, 0x074a}, {0x07a6, 0x07b0},
{0x0901, 0x0903}, {0x093c, 0x093c}, {0x093e, 0x094d}, {0x0951, 0x0954},
{0x0962, 0x0963}, {0x0981, 0x0983}, {0x09bc, 0x09bc}, {0x09be, 0x09c4},
{0x09c7, 0x09c8}, {0x09cb, 0x09cd}, {0x09d7, 0x09d7}, {0x09e2, 0x09e3},
{0x0a01, 0x0a03}, {0x0a3c, 0x0a3c}, {0x0a3e, 0x0a42}, {0x0a47, 0x0a48},
{0x0a4b, 0x0a4d}, {0x0a70, 0x0a71}, {0x0a81, 0x0a83}, {0x0abc, 0x0abc},
{0x0abe, 0x0ac5}, {0x0ac7, 0x0ac9}, {0x0acb, 0x0acd}, {0x0ae2, 0x0ae3},
{0x0b01, 0x0b03}, {0x0b3c, 0x0b3c}, {0x0b3e, 0x0b43}, {0x0b47, 0x0b48},
{0x0b4b, 0x0b4d}, {0x0b56, 0x0b57}, {0x0b82, 0x0b82}, {0x0bbe, 0x0bc2},
{0x0bc6, 0x0bc8}, {0x0bca, 0x0bcd}, {0x0bd7, 0x0bd7}, {0x0c01, 0x0c03},
{0x0c3e, 0x0c44}, {0x0c46, 0x0c48}, {0x0c4a, 0x0c4d}, {0x0c55, 0x0c56},
{0x0c82, 0x0c83}, {0x0cbc, 0x0cbc}, {0x0cbe, 0x0cc4}, {0x0cc6, 0x0cc8},
{0x0cca, 0x0ccd}, {0x0cd5, 0x0cd6}, {0x0d02, 0x0d03}, {0x0d3e, 0x0d43},
{0x0d46, 0x0d48}, {0x0d4a, 0x0d4d}, {0x0d57, 0x0d57}, {0x0d82, 0x0d83},
{0x0dca, 0x0dca}, {0x0dcf, 0x0dd4}, {0x0dd6, 0x0dd6}, {0x0dd8, 0x0ddf},
{0x0df2, 0x0df3}, {0x0e31, 0x0e31}, {0x0e34, 0x0e3a}, {0x0e47, 0x0e4e},
{0x0eb1, 0x0eb1}, {0x0eb4, 0x0eb9}, {0x0ebb, 0x0ebc}, {0x0ec8, 0x0ecd},
{0x0f18, 0x0f19}, {0x0f35, 0x0f35}, {0x0f37, 0x0f37}, {0x0f39, 0x0f39},
{0x0f3e, 0x0f3f}, {0x0f71, 0x0f84}, {0x0f86, 0x0f87}, {0x0f90, 0x0f97},
{0x0f99, 0x0fbc}, {0x0fc6, 0x0fc6}, {0x102c, 0x1032}, {0x1036, 0x1039},
{0x1056, 0x1059}, {0x1712, 0x1714}, {0x1732, 0x1734}, {0x1752, 0x1753},
{0x1772, 0x1773}, {0x17b6, 0x17d3}, {0x17dd, 0x17dd}, {0x180b, 0x180d},
{0x18a9, 0x18a9}, {0x1920, 0x192b}, {0x1930, 0x193b}, {0x20d0, 0x20ea},
{0x302a, 0x302f}, {0x3099, 0x309a}, {0xfb1e, 0xfb1e}, {0xfe00, 0xfe0f},
{0xfe20, 0xfe23},
};
return intable(combining, sizeof(combining), c);
}
/*
* Return TRUE for characters that can be displayed in a normal way.
* Only for characters of 0x100 and above!
*/
int
utf_printable(c)
int c;
{
#ifdef USE_WCHAR_FUNCTIONS
/*
* Assume the iswprint() library function works better than our own stuff.
*/
return iswprint(c);
#else
/* Sorted list of non-overlapping intervals.
* 0xd800-0xdfff is reserved for UTF-16, actually illegal. */
static struct interval nonprint[] =
{
{0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e},
{0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb},
{0xfffe, 0xffff}
};
return !intable(nonprint, sizeof(nonprint), c);
#endif
}
/*
* Get class of a Unicode character.
* 0: white space
* 1: punctuation
* 2 or bigger: some class of word character.
*/
int
utf_class(c)
int c;
{
/* sorted list of non-overlapping intervals */
static struct clinterval
{
unsigned short first;
unsigned short last;
unsigned short class;
} classes[] =
{
{0x037e, 0x037e, 1}, /* Greek question mark */
{0x0387, 0x0387, 1}, /* Greek ano teleia */
{0x055a, 0x055f, 1}, /* Armenian punctuation */
{0x0589, 0x0589, 1}, /* Armenian full stop */
{0x05be, 0x05be, 1},
{0x05c0, 0x05c0, 1},
{0x05c3, 0x05c3, 1},
{0x05f3, 0x05f4, 1},
{0x060c, 0x060c, 1},
{0x061b, 0x061b, 1},
{0x061f, 0x061f, 1},
{0x066a, 0x066d, 1},
{0x06d4, 0x06d4, 1},
{0x0700, 0x070d, 1}, /* Syriac punctuation */
{0x0964, 0x0965, 1},
{0x0970, 0x0970, 1},
{0x0df4, 0x0df4, 1},
{0x0e4f, 0x0e4f, 1},
{0x0e5a, 0x0e5b, 1},
{0x0f04, 0x0f12, 1},
{0x0f3a, 0x0f3d, 1},
{0x0f85, 0x0f85, 1},
{0x104a, 0x104f, 1}, /* Myanmar punctuation */
{0x10fb, 0x10fb, 1}, /* Georgian punctuation */
{0x1361, 0x1368, 1}, /* Ethiopic punctuation */
{0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
{0x1680, 0x1680, 0},
{0x169b, 0x169c, 1},
{0x16eb, 0x16ed, 1},
{0x1735, 0x1736, 1},
{0x17d4, 0x17dc, 1}, /* Khmer punctuation */
{0x1800, 0x180a, 1}, /* Mongolian punctuation */
{0x2000, 0x200b, 0}, /* spaces */
{0x200c, 0x2027, 1}, /* punctuation and symbols */
{0x2028, 0x2029, 0},
{0x202a, 0x202e, 1}, /* punctuation and symbols */
{0x202f, 0x202f, 0},
{0x2030, 0x205e, 1}, /* punctuation and symbols */
{0x205f, 0x205f, 0},
{0x2060, 0x27ff, 1}, /* punctuation and symbols */
{0x2070, 0x207f, 0x2070}, /* superscript */
{0x2080, 0x208f, 0x2080}, /* subscript */
{0x2983, 0x2998, 1},
{0x29d8, 0x29db, 1},
{0x29fc, 0x29fd, 1},
{0x3000, 0x3000, 0}, /* ideographic space */
{0x3001, 0x3020, 1}, /* ideographic punctuation */
{0x3030, 0x3030, 1},
{0x303d, 0x303d, 1},
{0x3040, 0x309f, 0x3040}, /* Hiragana */
{0x30a0, 0x30ff, 0x30a0}, /* Katakana */
{0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */
{0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */
{0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */
{0xfd3e, 0xfd3f, 1},
{0xfe30, 0xfe6b, 1}, /* punctuation forms */
{0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
{0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
{0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
{0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */
};
int bot = 0;
int top = sizeof(classes) / sizeof(struct clinterval) - 1;
int mid;
/* First quick check for Latin1 characters, use 'iskeyword'. */
if (c < 0x100)
{
if (c == ' ' || c == '\t' || c == NUL)
return 0; /* blank */
if (vim_iswordc(c))
return 2; /* word character */
return 1; /* punctuation */
}
/* binary search in table */
while (top >= bot)
{
mid = (bot + top) / 2;
if (classes[mid].last < c)
bot = mid + 1;
else if (classes[mid].first > c)
top = mid - 1;
else
return (int)classes[mid].class;
}
/* most other characters are "word" characters */
return 2;
}
/*
* Code for Unicode case-dependent operations. Based on notes in
* http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
* This code uses simple case folding, not full case folding.
*/
/*
* The following table is built by foldExtract.pl < CaseFolding.txt .
* It must be in numeric order, because we use binary search on it.
* An entry such as {0x41,0x5a,1,32} means that UCS-4 characters in the range
* from 0x41 to 0x5a inclusive, stepping by 1, are folded by adding 32.
*/
typedef struct
{
int rangeStart;
int rangeEnd;
int step;
int offset;
} convertStruct;
convertStruct foldCase[] =
{
{0x41,0x5a,1,32}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32},
{0x100,0x12e,2,1}, {0x130,0x130,-1,-199}, {0x132,0x136,2,1},
{0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121},
{0x179,0x17d,2,1}, {0x181,0x181,-1,210}, {0x182,0x184,2,1},
{0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205},
{0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202},
{0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205},
{0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209},
{0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213},
{0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218},
{0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1},
{0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217},
{0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1},
{0x1c4,0x1c4,-1,2}, {0x1c5,0x1c5,-1,1}, {0x1c7,0x1c7,-1,2},
{0x1c8,0x1c8,-1,1}, {0x1ca,0x1ca,-1,2}, {0x1cb,0x1db,2,1},
{0x1de,0x1ee,2,1}, {0x1f1,0x1f1,-1,2}, {0x1f2,0x1f4,2,1},
{0x1f6,0x1f6,-1,-97}, {0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1},
{0x220,0x220,-1,-130}, {0x222,0x232,2,1}, {0x386,0x386,-1,38},
{0x388,0x38a,1,37}, {0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63},
{0x391,0x3a1,1,32}, {0x3a3,0x3ab,1,32}, {0x3d8,0x3ee,2,1},
{0x3f4,0x3f4,-1,-60}, {0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7},
{0x3fa,0x3fa,-1,1}, {0x400,0x40f,1,80}, {0x410,0x42f,1,32},
{0x460,0x480,2,1}, {0x48a,0x4be,2,1}, {0x4c1,0x4cd,2,1},
{0x4d0,0x4f4,2,1}, {0x4f8,0x500,8,1}, {0x502,0x50e,2,1},
{0x531,0x556,1,48}, {0x1e00,0x1e94,2,1}, {0x1ea0,0x1ef8,2,1},
{0x1f08,0x1f0f,1,-8}, {0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8},
{0x1f38,0x1f3f,1,-8}, {0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8},
{0x1f68,0x1f6f,1,-8}, {0x1f88,0x1f8f,1,-8}, {0x1f98,0x1f9f,1,-8},
{0x1fa8,0x1faf,1,-8}, {0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74},
{0x1fbc,0x1fbc,-1,-9}, {0x1fc8,0x1fcb,1,-86}, {0x1fcc,0x1fcc,-1,-9},
{0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8},
{0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128},
{0x1ffa,0x1ffb,1,-126}, {0x1ffc,0x1ffc,-1,-9}, {0x2126,0x2126,-1,-7517},
{0x212a,0x212a,-1,-8383}, {0x212b,0x212b,-1,-8262},
{0x2160,0x216f,1,16}, {0x24b6,0x24cf,1,26}, {0xff21,0xff3a,1,32},
{0x10400,0x10427,1,40}
};
static int utf_convert(int a, convertStruct table[], int tableSize);
/*
* Generic conversion function for case operations.
* Return the converted equivalent of "a", which is a UCS-4 character. Use
* the given conversion "table". Uses binary search on "table".
*/
static int
utf_convert(a, table, tableSize)
int a;
convertStruct table[];
int tableSize;
{
int start, mid, end; /* indices into table */
start = 0;
end = tableSize / sizeof(convertStruct);
while (start < end)
{
/* need to search further */
mid = (end + start) /2;
if (table[mid].rangeEnd < a)
start = mid + 1;
else
end = mid;
}
if (table[start].rangeStart <= a && a <= table[start].rangeEnd
&& (a - table[start].rangeStart) % table[start].step == 0)
return (a + table[start].offset);
else
return a;
}
/*
* Return the folded-case equivalent of "a", which is a UCS-4 character. Uses
* simple case folding.
*/
int
utf_fold(a)
int a;
{
return utf_convert(a, foldCase, sizeof(foldCase));
}
/*
* The following tables are built by upperLowerExtract.pl < UnicodeData.txt .
* They must be in numeric order, because we use binary search on them.
* An entry such as {0x41,0x5a,1,32} means that UCS-4 characters in the range
* from 0x41 to 0x5a inclusive, stepping by 1, are switched to lower (for
* example) by adding 32.
*/
convertStruct toLower[] =
{
{0x41,0x5a,1,32}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32},
{0x100,0x12e,2,1}, {0x130,0x130,-1,-199}, {0x132,0x136,2,1},
{0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121},
{0x179,0x17d,2,1}, {0x181,0x181,-1,210}, {0x182,0x184,2,1},
{0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205},
{0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202},
{0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205},
{0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209},
{0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213},
{0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218},
{0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1},
{0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217},
{0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1},
{0x1c4,0x1ca,3,2}, {0x1cd,0x1db,2,1}, {0x1de,0x1ee,2,1},
{0x1f1,0x1f1,-1,2}, {0x1f4,0x1f4,-1,1}, {0x1f6,0x1f6,-1,-97},
{0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1}, {0x220,0x220,-1,-130},
{0x222,0x232,2,1}, {0x386,0x386,-1,38}, {0x388,0x38a,1,37},
{0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63}, {0x391,0x3a1,1,32},
{0x3a3,0x3ab,1,32}, {0x3d8,0x3ee,2,1}, {0x3f4,0x3f4,-1,-60},
{0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7}, {0x3fa,0x3fa,-1,1},
{0x400,0x40f,1,80}, {0x410,0x42f,1,32}, {0x460,0x480,2,1},
{0x48a,0x4be,2,1}, {0x4c1,0x4cd,2,1}, {0x4d0,0x4f4,2,1},
{0x4f8,0x500,8,1}, {0x502,0x50e,2,1}, {0x531,0x556,1,48},
{0x1e00,0x1e94,2,1}, {0x1ea0,0x1ef8,2,1}, {0x1f08,0x1f0f,1,-8},
{0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8}, {0x1f38,0x1f3f,1,-8},
{0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8}, {0x1f68,0x1f6f,1,-8},
{0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74}, {0x1fc8,0x1fcb,1,-86},
{0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8},
{0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128},
{0x1ffa,0x1ffb,1,-126}, {0x2126,0x2126,-1,-7517}, {0x212a,0x212a,-1,-8383},
{0x212b,0x212b,-1,-8262}, {0xff21,0xff3a,1,32}, {0x10400,0x10427,1,40}
};
convertStruct toUpper[] =
{
{0x61,0x7a,1,-32}, {0xb5,0xb5,-1,743}, {0xe0,0xf6,1,-32},
{0xf8,0xfe,1,-32}, {0xff,0xff,-1,121}, {0x101,0x12f,2,-1},
{0x131,0x131,-1,-232}, {0x133,0x137,2,-1}, {0x13a,0x148,2,-1},
{0x14b,0x177,2,-1}, {0x17a,0x17e,2,-1}, {0x17f,0x17f,-1,-300},
{0x183,0x185,2,-1}, {0x188,0x18c,4,-1}, {0x192,0x192,-1,-1},
{0x195,0x195,-1,97}, {0x199,0x199,-1,-1}, {0x19e,0x19e,-1,130},
{0x1a1,0x1a5,2,-1}, {0x1a8,0x1ad,5,-1}, {0x1b0,0x1b4,4,-1},
{0x1b6,0x1b9,3,-1}, {0x1bd,0x1bd,-1,-1}, {0x1bf,0x1bf,-1,56},
{0x1c5,0x1c6,1,-1}, {0x1c8,0x1c9,1,-1}, {0x1cb,0x1cc,1,-1},
{0x1ce,0x1dc,2,-1}, {0x1dd,0x1dd,-1,-79}, {0x1df,0x1ef,2,-1},
{0x1f2,0x1f3,1,-1}, {0x1f5,0x1f9,4,-1}, {0x1fb,0x21f,2,-1},
{0x223,0x233,2,-1}, {0x253,0x253,-1,-210}, {0x254,0x254,-1,-206},
{0x256,0x257,1,-205}, {0x259,0x259,-1,-202}, {0x25b,0x25b,-1,-203},
{0x260,0x260,-1,-205}, {0x263,0x263,-1,-207}, {0x268,0x268,-1,-209},
{0x269,0x26f,6,-211}, {0x272,0x272,-1,-213}, {0x275,0x275,-1,-214},
{0x280,0x283,3,-218}, {0x288,0x288,-1,-218}, {0x28a,0x28b,1,-217},
{0x292,0x292,-1,-219}, {0x3ac,0x3ac,-1,-38}, {0x3ad,0x3af,1,-37},
{0x3b1,0x3c1,1,-32}, {0x3c2,0x3c2,-1,-31}, {0x3c3,0x3cb,1,-32},
{0x3cc,0x3cc,-1,-64}, {0x3cd,0x3ce,1,-63}, {0x3d0,0x3d0,-1,-62},
{0x3d1,0x3d1,-1,-57}, {0x3d5,0x3d5,-1,-47}, {0x3d6,0x3d6,-1,-54},
{0x3d9,0x3ef,2,-1}, {0x3f0,0x3f0,-1,-86}, {0x3f1,0x3f1,-1,-80},
{0x3f2,0x3f2,-1,7}, {0x3f5,0x3f5,-1,-96}, {0x3f8,0x3fb,3,-1},
{0x430,0x44f,1,-32}, {0x450,0x45f,1,-80}, {0x461,0x481,2,-1},
{0x48b,0x4bf,2,-1}, {0x4c2,0x4ce,2,-1}, {0x4d1,0x4f5,2,-1},
{0x4f9,0x501,8,-1}, {0x503,0x50f,2,-1}, {0x561,0x586,1,-48},
{0x1e01,0x1e95,2,-1}, {0x1e9b,0x1e9b,-1,-59}, {0x1ea1,0x1ef9,2,-1},
{0x1f00,0x1f07,1,8}, {0x1f10,0x1f15,1,8}, {0x1f20,0x1f27,1,8},
{0x1f30,0x1f37,1,8}, {0x1f40,0x1f45,1,8}, {0x1f51,0x1f57,2,8},
{0x1f60,0x1f67,1,8}, {0x1f70,0x1f71,1,74}, {0x1f72,0x1f75,1,86},
{0x1f76,0x1f77,1,100}, {0x1f78,0x1f79,1,128}, {0x1f7a,0x1f7b,1,112},
{0x1f7c,0x1f7d,1,126}, {0x1f80,0x1f87,1,8}, {0x1f90,0x1f97,1,8},
{0x1fa0,0x1fa7,1,8}, {0x1fb0,0x1fb1,1,8}, {0x1fb3,0x1fb3,-1,9},
{0x1fbe,0x1fbe,-1,-7205}, {0x1fc3,0x1fc3,-1,9}, {0x1fd0,0x1fd1,1,8},
{0x1fe0,0x1fe1,1,8}, {0x1fe5,0x1fe5,-1,7}, {0x1ff3,0x1ff3,-1,9},
{0xff41,0xff5a,1,-32}, {0x10428,0x1044f,1,-40}
};
/*
* Return the upper-case equivalent of "a", which is a UCS-4 character. Use
* simple case folding.
*/
int
utf_toupper(a)
int a;
{
/* If 'casemap' contains "keepascii" use ASCII style toupper(). */
if (a < 128 && (cmp_flags & CMP_KEEPASCII))
return TOUPPER_ASC(a);
#if defined(HAVE_TOWUPPER) && defined(__STDC__ISO_10646__)
/* If towupper() is availble and handles Unicode, use it. */
if (!(cmp_flags & CMP_INTERNAL))
return towupper(a);
#endif
/* For characters below 128 use locale sensitive toupper(). */
if (a < 128)
return TOUPPER_LOC(a);
/* For any other characters use the above mapping table. */
return utf_convert(a, toUpper, sizeof(toUpper));
}
int
utf_islower(a)
int a;
{
return (utf_toupper(a) != a);
}
/*
* Return the lower-case equivalent of "a", which is a UCS-4 character. Use
* simple case folding.
*/
int
utf_tolower(a)
int a;
{
/* If 'casemap' contains "keepascii" use ASCII style tolower(). */
if (a < 128 && (cmp_flags & CMP_KEEPASCII))
return TOLOWER_ASC(a);
#if defined(HAVE_TOWLOWER) && defined(__STDC__ISO_10646__)
/* If towlower() is available and handles Unicode, use it. */
if (!(cmp_flags & CMP_INTERNAL))
return towlower(a);
#endif
/* For characters below 128 use locale sensitive tolower(). */
if (a < 128)
return TOLOWER_LOC(a);
/* For any other characters use the above mapping table. */
return utf_convert(a, toLower, sizeof(toLower));
}
int
utf_isupper(a)
int a;
{
return (utf_tolower(a) != a);
}
/*
* Version of strnicmp() that handles multi-byte characters.
* Needed for Big5, Sjift-JIS and UTF-8 encoding. Other DBCS encodings can
* probably use strnicmp(), because there are no ASCII characters in the
* second byte.
* Returns zero if s1 and s2 are equal (ignoring case), the difference between
* two characters otherwise.
*/
int
mb_strnicmp(s1, s2, n)
char_u *s1, *s2;
int n;
{
int i, j, l;
int cdiff;
for (i = 0; i < n; i += l)
{
if (s1[i] == NUL && s2[i] == NUL) /* both strings end */
return 0;
if (enc_utf8)
{
l = utf_byte2len(s1[i]);
if (l > n - i)
l = n - i; /* incomplete character */
/* Check directly first, it's faster. */
for (j = 0; j < l; ++j)
if (s1[i + j] != s2[i + j])
break;
if (j < l)
{
/* If one of the two characters is incomplete return -1. */
if (i + utf_byte2len(s1[i]) > n || i + utf_byte2len(s2[i]) > n)
return -1;
cdiff = utf_fold(utf_ptr2char(s1 + i))
- utf_fold(utf_ptr2char(s2 + i));
if (cdiff != 0)
return cdiff;
}
}
else
{
l = (*mb_ptr2len_check)(s1 + i);
if (l <= 1)
{
/* Single byte: first check normally, then with ignore case. */
if (s1[i] != s2[i])
{
cdiff = TOLOWER_LOC(s1[i]) - TOLOWER_LOC(s2[i]);
if (cdiff != 0)
return cdiff;
}
}
else
{
/* For non-Unicode multi-byte don't ignore case. */
if (l > n - i)
l = n - i;
cdiff = STRNCMP(s1 + i, s2 + i, l);
if (cdiff != 0)
return cdiff;
}
}
}
return 0;
}
/*
* "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what
* 'encoding' has been set to.
*/
void
show_utf8()
{
int len;
int rlen = 0;
char_u *line;
int clen;
int i;
/* Get the byte length of the char under the cursor, including composing
* characters. */
line = ml_get_cursor();
len = utfc_ptr2len_check(line);
if (len == 0)
{
MSG("NUL");
return;
}
clen = 0;
for (i = 0; i < len; ++i)
{
if (clen == 0)
{
/* start of (composing) character, get its length */
if (i > 0)
{
STRCPY(IObuff + rlen, "+ ");
rlen += 2;
}
clen = utf_ptr2len_check(line + i);
}
sprintf((char *)IObuff + rlen, "%02x ", line[i]);
--clen;
rlen += STRLEN(IObuff + rlen);
if (rlen > IOSIZE - 20)
break;
}
msg(IObuff);
}
/*
* mb_head_off() function pointer.
* Return offset from "p" to the first byte of the character it points into.
* Returns 0 when already at the first byte of a character.
*/
/*ARGSUSED*/
int
latin_head_off(base, p)
char_u *base;
char_u *p;
{
return 0;
}
int
dbcs_head_off(base, p)
char_u *base;
char_u *p;
{
char_u *q;
/* It can't be a trailing byte when not using DBCS, at the start of the
* string or the previous byte can't start a double-byte. */
if (p <= base || MB_BYTE2LEN(p[-1]) == 1)
return 0;
/* This is slow: need to start at the base and go forward until the
* byte we are looking for. Return 1 when we went past it, 0 otherwise. */
q = base;
while (q < p)
q += dbcs_ptr2len_check(q);
return (q == p) ? 0 : 1;
}
#if defined(FEAT_CLIPBOARD) || defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \
|| defined(PROTO)
/*
* Special version of dbcs_head_off() that works for ScreenLines[], where
* single-width DBCS_JPNU characters are stored separately.
*/
int
dbcs_screen_head_off(base, p)
char_u *base;
char_u *p;
{
char_u *q;
/* It can't be a trailing byte when not using DBCS, at the start of the
* string or the previous byte can't start a double-byte.
* For euc-jp an 0x8e byte in the previous cell always means we have a
* lead byte in the current cell. */
if (p <= base
|| (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e)
|| MB_BYTE2LEN(p[-1]) == 1)
return 0;
/* This is slow: need to start at the base and go forward until the
* byte we are looking for. Return 1 when we went past it, 0 otherwise.
* For DBCS_JPNU look out for 0x8e, which means the second byte is not
* stored as the next byte. */
q = base;
while (q < p)
{
if (enc_dbcs == DBCS_JPNU && *q == 0x8e)
++q;
else
q += dbcs_ptr2len_check(q);
}
return (q == p) ? 0 : 1;
}
#endif
int
utf_head_off(base, p)
char_u *base;
char_u *p;
{
char_u *q;
char_u *s;
int c;
#ifdef FEAT_ARABIC
char_u *j;
#endif
if (*p < 0x80) /* be quick for ASCII */
return 0;
/* Skip backwards over trailing bytes: 10xx.xxxx
* Skip backwards again if on a composing char. */
for (q = p; ; --q)
{
/* Move s to the last byte of this char. */
for (s = q; (s[1] & 0xc0) == 0x80; ++s)
;
/* Move q to the first byte of this char. */
while (q > base && (*q & 0xc0) == 0x80)
--q;
/* Check for illegal sequence. Do allow an illegal byte after where we
* started. */
if (utf8len_tab[*q] != (int)(s - q + 1)
&& utf8len_tab[*q] != (int)(p - q + 1))
return 0;
if (q <= base)
break;
c = utf_ptr2char(q);
if (utf_iscomposing(c))
continue;
#ifdef FEAT_ARABIC
if (arabic_maycombine(c))
{
/* Advance to get a sneak-peak at the next char */
j = q;
--j;
/* Move j to the first byte of this char. */
while (j > base && (*j & 0xc0) == 0x80)
--j;
if (arabic_combine(utf_ptr2char(j), c))
continue;
}
#endif
break;
}
return (int)(p - q);
}
#if defined(FEAT_EVAL) || defined(PROTO)
/*
* Copy a character from "*fp" to "*tp" and advance the pointers.
*/
void
mb_copy_char(fp, tp)
char_u **fp;
char_u **tp;
{
int l = (*mb_ptr2len_check)(*fp);
mch_memmove(*tp, *fp, (size_t)l);
*tp += l;
*fp += l;
}
#endif
/*
* Return the offset from "p" to the first byte of a character. When "p" is
* at the start of a character 0 is returned, otherwise the offset to the next
* character. Can start anywhere in a stream of bytes.
*/
int
mb_off_next(base, p)
char_u *base;
char_u *p;
{
int i;
int j;
if (enc_utf8)
{
if (*p < 0x80) /* be quick for ASCII */
return 0;
/* Find the next character that isn't 10xx.xxxx */
for (i = 0; (p[i] & 0xc0) == 0x80; ++i)
;
if (i > 0)
{
/* Check for illegal sequence. */
for (j = 0; p - j > base; ++j)
if ((p[-j] & 0xc0) != 0x80)
break;
if (utf8len_tab[p[-j]] != i + j)
return 0;
}
return i;
}
/* Only need to check if we're on a trail byte, it doesn't matter if we
* want the offset to the next or current character. */
return (*mb_head_off)(base, p);
}
/*
* Return the offset from "p" to the last byte of the character it points
* into. Can start anywhere in a stream of bytes.
*/
int
mb_tail_off(base, p)
char_u *base;
char_u *p;
{
int i;
int j;
if (*p == NUL)
return 0;
if (enc_utf8)
{
/* Find the last character that is 10xx.xxxx */
for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i)
;
/* Check for illegal sequence. */
for (j = 0; p - j > base; ++j)
if ((p[-j] & 0xc0) != 0x80)
break;
if (utf8len_tab[p[-j]] != i + j + 1)
return 0;
return i;
}
/* It can't be the first byte if a double-byte when not using DBCS, at the
* end of the string or the byte can't start a double-byte. */
if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1)
return 0;
/* Return 1 when on the lead byte, 0 when on the tail byte. */
return 1 - dbcs_head_off(base, p);
}
#if defined(HAVE_GTK2) || defined(PROTO)
/*
* Return TRUE if string "s" is a valid utf-8 string.
* When "end" is NULL stop at the first NUL.
* When "end" is positive stop there.
*/
int
utf_valid_string(s, end)
char_u *s;
char_u *end;
{
int l;
char_u *p = s;
while (end == NULL ? *p != NUL : p < end)
{
if ((*p & 0xc0) == 0x80)
return FALSE; /* invalid lead byte */
l = utf8len_tab[*p];
if (end != NULL && p + l > end)
return FALSE; /* incomplete byte sequence */
++p;
while (--l > 0)
if ((*p++ & 0xc0) != 0x80)
return FALSE; /* invalid trail byte */
}
return TRUE;
}
#endif
#if defined(FEAT_GUI) || defined(PROTO)
/*
* Special version of mb_tail_off() for use in ScreenLines[].
*/
int
dbcs_screen_tail_off(base, p)
char_u *base;
char_u *p;
{
/* It can't be the first byte if a double-byte when not using DBCS, at the
* end of the string or the byte can't start a double-byte.
* For euc-jp an 0x8e byte always means we have a lead byte in the current
* cell. */
if (*p == NUL || p[1] == NUL
|| (enc_dbcs == DBCS_JPNU && *p == 0x8e)
|| MB_BYTE2LEN(*p) == 1)
return 0;
/* Return 1 when on the lead byte, 0 when on the tail byte. */
return 1 - dbcs_screen_head_off(base, p);
}
#endif
/*
* If the cursor moves on an trail byte, set the cursor on the lead byte.
* Thus it moves left if necessary.
* Return TRUE when the cursor was adjusted.
*/
void
mb_adjust_cursor()
{
mb_adjustpos(&curwin->w_cursor);
}
/*
* Adjust position "*lp" to point to the first byte of a multi-byte character.
* If it points to a tail byte it's moved backwards to the head byte.
*/
void
mb_adjustpos(lp)
pos_T *lp;
{
char_u *p;
if (lp->col > 0
#ifdef FEAT_VIRTUALEDIT
|| lp->coladd > 1
#endif
)
{
p = ml_get(lp->lnum);
lp->col -= (*mb_head_off)(p, p + lp->col);
#ifdef FEAT_VIRTUALEDIT
/* Reset "coladd" when the cursor would be on the right half of a
* double-wide character. */
if (lp->coladd == 1
&& p[lp->col] != TAB
&& vim_isprintc((*mb_ptr2char)(p + lp->col))
&& ptr2cells(p + lp->col) > 1)
lp->coladd = 0;
#endif
}
}
/*
* Return a pointer to the character before "*p", if there is one.
*/
char_u *
mb_prevptr(line, p)
char_u *line; /* start of the string */
char_u *p;
{
if (p > line)
mb_ptr_back(line, p);
return p;
}
/*
* Return the character length of "str". multi-byte characters counts as one.
*/
int
mb_charlen(str)
char_u *str;
{
int count;
if (str == NULL)
return 0;
for (count = 0; *str != NUL; count++)
str += (*mb_ptr2len_check)(str);
return count;
}
/*
* Try to un-escape a multi-byte character.
* Used for the "to" and "from" part of a mapping.
* Return the un-escaped string if it is a multi-byte character, and advance
* "pp" to just after the bytes that formed it.
* Return NULL if no multi-byte char was found.
*/
char_u *
mb_unescape(pp)
char_u **pp;
{
static char_u buf[MB_MAXBYTES + 1];
int n, m = 0;
char_u *str = *pp;
/* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI
* KS_EXTRA KE_CSI to CSI. */
for (n = 0; str[n] != NUL && m <= MB_MAXBYTES; ++n)
{
if (str[n] == K_SPECIAL
&& str[n + 1] == KS_SPECIAL
&& str[n + 2] == KE_FILLER)
{
buf[m++] = K_SPECIAL;
n += 2;
}
# ifdef FEAT_GUI
else if (str[n] == CSI
&& str[n + 1] == KS_EXTRA
&& str[n + 2] == (int)KE_CSI)
{
buf[m++] = CSI;
n += 2;
}
# endif
else if (str[n] == K_SPECIAL
# ifdef FEAT_GUI
|| str[n] == CSI
# endif
)
break; /* a special key can't be a multibyte char */
else
buf[m++] = str[n];
buf[m] = NUL;
/* Return a multi-byte character if it's found. An illegal sequence
* will result in a 1 here. */
if ((*mb_ptr2len_check)(buf) > 1)
{
*pp = str + n + 1;
return buf;
}
}
return NULL;
}
/*
* Return TRUE if the character at "row"/"col" on the screen is the left side
* of a double-width character.
* Caller must make sure "row" and "col" are not invalid!
*/
int
mb_lefthalve(row, col)
int row;
int col;
{
#ifdef FEAT_HANGULIN
if (composing_hangul)
return TRUE;
#endif
if (enc_dbcs != 0)
return dbcs_off2cells(LineOffset[row] + col) > 1;
if (enc_utf8)
return (col + 1 < Columns
&& ScreenLines[LineOffset[row] + col + 1] == 0);
return FALSE;
}
# if defined(FEAT_CLIPBOARD) || defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \
|| defined(PROTO)
/*
* Correct a position on the screen, if it's the right halve of a double-wide
* char move it to the left halve. Returns the corrected column.
*/
int
mb_fix_col(col, row)
int col;
int row;
{
col = check_col(col);
row = check_row(row);
if (has_mbyte && ScreenLines != NULL && col > 0
&& ((enc_dbcs
&& ScreenLines[LineOffset[row] + col] != NUL
&& dbcs_screen_head_off(ScreenLines + LineOffset[row],
ScreenLines + LineOffset[row] + col))
|| (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0)))
--col;
return col;
}
# endif
#endif
#if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO)
static int enc_alias_search __ARGS((char_u *name));
/*
* Skip the Vim specific head of a 'encoding' name.
*/
char_u *
enc_skip(p)
char_u *p;
{
if (STRNCMP(p, "2byte-", 6) == 0)
return p + 6;
if (STRNCMP(p, "8bit-", 5) == 0)
return p + 5;
return p;
}
/*
* Find the canonical name for encoding "enc".
* When the name isn't recognized, returns "enc" itself, but with all lower
* case characters and '_' replaced with '-'.
* Returns an allocated string. NULL for out-of-memory.
*/
char_u *
enc_canonize(enc)
char_u *enc;
{
char_u *r;
char_u *p, *s;
int i;
# ifdef FEAT_MBYTE
if (STRCMP(enc, "default") == 0)
{
/* Use the default encoding as it's found by set_init_1(). */
r = get_encoding_default();
if (r == NULL)
r = (char_u *)"latin1";
return vim_strsave(r);
}
# endif
/* copy "enc" to allocted memory, with room for two '-' */
r = alloc((unsigned)(STRLEN(enc) + 3));
if (r != NULL)
{
/* Make it all lower case and replace '_' with '-'. */
p = r;
for (s = enc; *s != NUL; ++s)
{
if (*s == '_')
*p++ = '-';
else
*p++ = TOLOWER_ASC(*s);
}
*p = NUL;
/* Skip "2byte-" and "8bit-". */
p = enc_skip(r);
/* "iso8859" -> "iso-8859" */
if (STRNCMP(p, "iso8859", 7) == 0)
{
mch_memmove(p + 4, p + 3, STRLEN(p + 2));
p[3] = '-';
}
/* "iso-8859n" -> "iso-8859-n" */
if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-')
{
mch_memmove(p + 9, p + 8, STRLEN(p + 7));
p[8] = '-';
}
/* "latin-N" -> "latinN" */
if (STRNCMP(p, "latin-", 6) == 0)
mch_memmove(p + 5, p + 6, STRLEN(p + 5));
if (enc_canon_search(p) >= 0)
{
/* canonical name can be used unmodified */
if (p != r)
mch_memmove(r, p, STRLEN(p) + 1);
}
else if ((i = enc_alias_search(p)) >= 0)
{
/* alias recognized, get canonical name */
vim_free(r);
r = vim_strsave((char_u *)enc_canon_table[i].name);
}
}
return r;
}
/*
* Search for an encoding alias of "name".
* Returns -1 when not found.
*/
static int
enc_alias_search(name)
char_u *name;
{
int i;
for (i = 0; enc_alias_table[i].name != NULL; ++i)
if (STRCMP(name, enc_alias_table[i].name) == 0)
return enc_alias_table[i].canon;
return -1;
}
#endif
#if defined(FEAT_MBYTE) || defined(PROTO)
#ifdef HAVE_LANGINFO_H
# include <langinfo.h>
#endif
/*
* Get the canonicalized encoding of the current locale.
* Returns an allocated string when successful, NULL when not.
*/
char_u *
enc_locale()
{
#ifndef WIN3264
char *s;
char *p;
int i;
#endif
char buf[50];
#ifdef WIN3264
long acp = GetACP();
if (acp == 1200)
STRCPY(buf, "ucs-2le");
else if (acp == 1252)
STRCPY(buf, "latin1");
else
sprintf(buf, "cp%ld", acp);
#else
# ifdef HAVE_NL_LANGINFO_CODESET
if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL)
# endif
# ifdef MACOS
s = "utf-8";
# else
# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL)
# endif
if ((s = getenv("LC_ALL")) == NULL || *s == NUL)
if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL)
s = getenv("LANG");
# endif
if (s == NULL || *s == NUL)
return FAIL;
/* The most generic locale format is:
* language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]]
* If there is a '.' remove the part before it.
* if there is something after the codeset, remove it.
* Make the name lowercase and replace '_' with '-'.
* Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn",
* "ko_KR.EUC" == "euc-kr"
*/
if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL)
{
if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0
&& !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_')
{
/* copy "XY.EUC" to "euc-XY" to buf[10] */
STRCPY(buf + 10, "euc-");
buf[14] = p[-2];
buf[15] = p[-1];
buf[16] = 0;
s = buf + 10;
}
else
s = p + 1;
}
for (i = 0; s[i] != NUL && i < sizeof(buf) - 1; ++i)
{
if (s[i] == '_' || s[i] == '-')
buf[i] = '-';
else if (isalnum((int)s[i]))
buf[i] = TOLOWER_ASC(s[i]);
else
break;
}
buf[i] = NUL;
#endif
return enc_canonize((char_u *)buf);
}
#if defined(WIN3264) || defined(PROTO)
/*
* Convert an encoding name to an MS-Windows codepage.
* Returns zero if no codepage can be figured out.
*/
int
encname2codepage(name)
char_u *name;
{
int cp;
char_u *p = name;
int idx;
if (STRNCMP(p, "8bit-", 5) == 0)
p += 5;
else if (STRNCMP(p_enc, "2byte-", 6) == 0)
p += 6;
if (p[0] == 'c' && p[1] == 'p')
cp = atoi(p + 2);
else if ((idx = enc_canon_search(p)) >= 0)
cp = enc_canon_table[idx].codepage;
else
return 0;
if (IsValidCodePage(cp))
return cp;
return 0;
}
#endif
# if defined(USE_ICONV) || defined(PROTO)
static char_u *iconv_string __ARGS((vimconv_T *vcp, char_u *str, int slen, int *unconvlenp));
/*
* Call iconv_open() with a check if iconv() works properly (there are broken
* versions).
* Returns (void *)-1 if failed.
* (should return iconv_t, but that causes problems with prototypes).
*/
void *
my_iconv_open(to, from)
char_u *to;
char_u *from;
{
iconv_t fd;
#define ICONV_TESTLEN 400
char_u tobuf[ICONV_TESTLEN];
char *p;
size_t tolen;
static int iconv_ok = -1;
if (iconv_ok == FALSE)
return (void *)-1; /* detected a broken iconv() previously */
#ifdef DYNAMIC_ICONV
/* Check if the iconv.dll can be found. */
if (!iconv_enabled(TRUE))
return (void *)-1;
#endif
fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from));
if (fd != (iconv_t)-1 && iconv_ok == -1)
{
/*
* Do a dummy iconv() call to check if it actually works. There is a
* version of iconv() on Linux that is broken. We can't ignore it,
* because it's wide-spread. The symptoms are that after outputting
* the initial shift state the "to" pointer is NULL and conversion
* stops for no apparent reason after about 8160 characters.
*/
p = (char *)tobuf;
tolen = ICONV_TESTLEN;
(void)iconv(fd, NULL, NULL, &p, &tolen);
if (p == NULL)
{
iconv_ok = FALSE;
iconv_close(fd);
fd = (iconv_t)-1;
}
else
iconv_ok = TRUE;
}
return (void *)fd;
}
/*
* Convert the string "str[slen]" with iconv().
* If "unconvlenp" is not NULL handle the string ending in an incomplete
* sequence and set "*unconvlenp" to the length of it.
* Returns the converted string in allocated memory. NULL for an error.
*/
static char_u *
iconv_string(vcp, str, slen, unconvlenp)
vimconv_T *vcp;
char_u *str;
int slen;
int *unconvlenp;
{
const char *from;
size_t fromlen;
char *to;
size_t tolen;
size_t len = 0;
size_t done = 0;
char_u *result = NULL;
char_u *p;
int l;
from = (char *)str;
fromlen = slen;
for (;;)
{
if (len == 0 || ICONV_ERRNO == ICONV_E2BIG)
{
/* Allocate enough room for most conversions. When re-allocating
* increase the buffer size. */
len = len + fromlen * 2 + 40;
p = alloc((unsigned)len);
if (p != NULL && done > 0)
mch_memmove(p, result, done);
vim_free(result);
result = p;
if (result == NULL) /* out of memory */
break;
}
to = (char *)result + done;
tolen = len - done - 2;
/* Avoid a warning for systems with a wrong iconv() prototype by
* casting the second argument to void *. */
if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen)
!= (size_t)-1)
{
/* Finished, append a NUL. */
*to = NUL;
break;
}
/* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded
* iconv library may use one of them. */
if (!vcp->vc_fail && unconvlenp != NULL
&& (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
{
/* Handle an incomplete sequence at the end. */
*to = NUL;
*unconvlenp = fromlen;
break;
}
/* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded
* iconv library may use one of them. */
else if (!vcp->vc_fail
&& (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ
|| ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL))
{
/* Can't convert: insert a '?' and skip a character. This assumes
* conversion from 'encoding' to something else. In other
* situations we don't know what to skip anyway. */
*to++ = '?';
if ((*mb_ptr2cells)((char_u *)from) > 1)
*to++ = '?';
if (enc_utf8)
l = utfc_ptr2len_check_len((char_u *)from, fromlen);
else
{
l = (*mb_ptr2len_check)((char_u *)from);
if (l > (int)fromlen)
l = fromlen;
}
from += l;
fromlen -= l;
}
else if (ICONV_ERRNO != ICONV_E2BIG)
{
/* conversion failed */
vim_free(result);
result = NULL;
break;
}
/* Not enough room or skipping illegal sequence. */
done = to - (char *)result;
}
return result;
}
# if defined(DYNAMIC_ICONV) || defined(PROTO)
/*
* Dynamically load the "iconv.dll" on Win32.
*/
#ifndef DYNAMIC_ICONV /* just generating prototypes */
# define HINSTANCE int
#endif
HINSTANCE hIconvDLL = 0;
HINSTANCE hMsvcrtDLL = 0;
# ifndef DYNAMIC_ICONV_DLL
# define DYNAMIC_ICONV_DLL "iconv.dll"
# define DYNAMIC_ICONV_DLL_ALT "libiconv.dll"
# endif
# ifndef DYNAMIC_MSVCRT_DLL
# define DYNAMIC_MSVCRT_DLL "msvcrt.dll"
# endif
/*
* Try opening the iconv.dll and return TRUE if iconv() can be used.
*/
int
iconv_enabled(verbose)
int verbose;
{
if (hIconvDLL != 0 && hMsvcrtDLL != 0)
return TRUE;
hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL);
if (hIconvDLL == 0) /* sometimes it's called libiconv.dll */
hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL_ALT);
if (hIconvDLL != 0)
hMsvcrtDLL = LoadLibrary(DYNAMIC_MSVCRT_DLL);
if (hIconvDLL == 0 || hMsvcrtDLL == 0)
{
/* Only give the message when 'verbose' is set, otherwise it might be
* done whenever a conversion is attempted. */
if (verbose && p_verbose > 0)
EMSG2(_(e_loadlib),
hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL);
iconv_end();
return FALSE;
}
*((FARPROC*)&iconv) = GetProcAddress(hIconvDLL, "libiconv");
*((FARPROC*)&iconv_open) = GetProcAddress(hIconvDLL, "libiconv_open");
*((FARPROC*)&iconv_close) = GetProcAddress(hIconvDLL, "libiconv_close");
*((FARPROC*)&iconvctl) = GetProcAddress(hIconvDLL, "libiconvctl");
*((FARPROC*)&iconv_errno) = GetProcAddress(hMsvcrtDLL, "_errno");
if (iconv == NULL || iconv_open == NULL || iconv_close == NULL
|| iconvctl == NULL || iconv_errno == NULL)
{
iconv_end();
if (verbose && p_verbose > 0)
EMSG2(_(e_loadfunc), "for libiconv");
return FALSE;
}
return TRUE;
}
void
iconv_end()
{
/* Don't use iconv() when inputting or outputting characters. */
if (input_conv.vc_type == CONV_ICONV)
convert_setup(&input_conv, NULL, NULL);
if (output_conv.vc_type == CONV_ICONV)
convert_setup(&output_conv, NULL, NULL);
if (hIconvDLL != 0)
FreeLibrary(hIconvDLL);
if (hMsvcrtDLL != 0)
FreeLibrary(hMsvcrtDLL);
hIconvDLL = 0;
hMsvcrtDLL = 0;
}
# endif /* DYNAMIC_ICONV */
# endif /* USE_ICONV */
#endif /* FEAT_MBYTE */
#if defined(FEAT_XIM) || defined(PROTO)
# ifdef FEAT_GUI_GTK
static int xim_has_preediting INIT(= FALSE); /* IM current status */
/*
* Set preedit_start_col to the current cursor position.
*/
static void
init_preedit_start_col(void)
{
if (State & CMDLINE)
preedit_start_col = cmdline_getvcol_cursor();
else if (curwin != NULL)
getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL);
/* Prevent that preediting marks the buffer as changed. */
xim_changed_while_preediting = curbuf->b_changed;
}
# endif
# if defined(HAVE_GTK2) && !defined(PROTO)
static int im_is_active = FALSE; /* IM is enabled for current mode */
static int im_preedit_cursor = 0; /* cursor offset in characters */
static int im_preedit_trailing = 0; /* number of characters after cursor */
static unsigned long im_commit_handler_id = 0;
static unsigned int im_activatekey_keyval = GDK_VoidSymbol;
static unsigned int im_activatekey_state = 0;
void
im_set_active(int active)
{
int was_active;
was_active = !!im_is_active;
im_is_active = (active && !p_imdisable);
if (im_is_active != was_active)
xim_reset();
}
void
xim_set_focus(int focus)
{
if (xic != NULL)
{
if (focus)
gtk_im_context_focus_in(xic);
else
gtk_im_context_focus_out(xic);
}
}
void
im_set_position(int row, int col)
{
if (xic != NULL)
{
GdkRectangle area;
area.x = FILL_X(col);
area.y = FILL_Y(row);
area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1);
area.height = gui.char_height;
gtk_im_context_set_cursor_location(xic, &area);
}
}
# if 0 || defined(PROTO) /* apparently only used in gui_x11.c */
void
xim_set_preedit(void)
{
im_set_position(gui.row, gui.col);
}
# endif
static void
im_add_to_input(char_u *str, int len)
{
/* Convert from 'termencoding' (always "utf-8") to 'encoding' */
if (input_conv.vc_type != CONV_NONE)
{
str = string_convert(&input_conv, str, &len);
g_return_if_fail(str != NULL);
}
add_to_input_buf_csi(str, len);
if (input_conv.vc_type != CONV_NONE)
vim_free(str);
if (p_mh) /* blank out the pointer if necessary */
gui_mch_mousehide(TRUE);
}
static void
im_delete_preedit(void)
{
char_u bskey[] = {CSI, 'k', 'b'};
char_u delkey[] = {CSI, 'k', 'D'};
if (State & NORMAL)
{
im_preedit_cursor = 0;
return;
}
for (; im_preedit_cursor > 0; --im_preedit_cursor)
add_to_input_buf(bskey, (int)sizeof(bskey));
for (; im_preedit_trailing > 0; --im_preedit_trailing)
add_to_input_buf(delkey, (int)sizeof(delkey));
}
static void
im_correct_cursor(int num_move_back)
{
char_u backkey[] = {CSI, 'k', 'l'};
if (State & NORMAL)
return;
# ifdef FEAT_RIGHTLEFT
if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl)
backkey[2] = 'r';
# endif
for (; num_move_back > 0; --num_move_back)
add_to_input_buf(backkey, (int)sizeof(backkey));
}
static int xim_expected_char = NUL;
static int xim_ignored_char = FALSE;
/*
* Update the mode and cursor while in an IM callback.
*/
static void
im_show_info(void)
{
int old_vgetc_busy;
old_vgetc_busy = vgetc_busy;
vgetc_busy = TRUE;
showmode();
vgetc_busy = old_vgetc_busy;
setcursor();
out_flush();
}
/*
* Callback invoked when the user finished preediting.
* Put the final string into the input buffer.
*/
/*ARGSUSED0*/
static void
im_commit_cb(GtkIMContext *context, const gchar *str, gpointer data)
{
int slen = (int)STRLEN(str);
int add_to_input = TRUE;
int clen;
int len = slen;
int commit_with_preedit = TRUE;
char_u *im_str, *p;
#ifdef XIM_DEBUG
xim_log("im_commit_cb(): %s\n", str);
#endif
/* The imhangul module doesn't reset the preedit string before
* committing. Call im_delete_preedit() to work around that. */
im_delete_preedit();
/* Indicate that preediting has finished. */
if (preedit_start_col == MAXCOL)
{
init_preedit_start_col();
commit_with_preedit = FALSE;
}
/* The thing which setting "preedit_start_col" to MAXCOL means that
* "preedit_start_col" will be set forcely when calling
* preedit_changed_cb() next time.
* "preedit_start_col" should not reset with MAXCOL on this part. Vim
* is simulating the preediting by using add_to_input_str(). when
* preedit begin immediately before committed, the typebuf is not
* flushed to screen, then it can't get correct "preedit_start_col".
* Thus, it should calculate the cells by adding cells of the committed
* string. */
if (input_conv.vc_type != CONV_NONE)
{
im_str = string_convert(&input_conv, (char_u *)str, &len);
g_return_if_fail(im_str != NULL);
}
else
im_str = (char_u *)str;
clen = 0;
for (p = im_str; p < im_str + len; p += (*mb_ptr2len_check)(p))
clen += (*mb_ptr2cells)(p);
if (input_conv.vc_type != CONV_NONE)
vim_free(im_str);
preedit_start_col += clen;
/* Is this a single character that matches a keypad key that's just
* been pressed? If so, we don't want it to be entered as such - let
* us carry on processing the raw keycode so that it may be used in
* mappings as <kSomething>. */
if (xim_expected_char != NUL)
{
/* We're currently processing a keypad or other special key */
if (slen == 1 && str[0] == xim_expected_char)
{
/* It's a match - don't do it here */
xim_ignored_char = TRUE;
add_to_input = FALSE;
}
else
{
/* Not a match */
xim_ignored_char = FALSE;
}
}
if (add_to_input)
im_add_to_input((char_u *)str, slen);
/* Inserting chars while "im_is_active" is set does not cause a change of
* buffer. When the chars are committed the buffer must be marked as
* changed. */
if (!commit_with_preedit)
preedit_start_col = MAXCOL;
/* This flag is used in changed() at next call. */
xim_changed_while_preediting = TRUE;
if (gtk_main_level() > 0)
gtk_main_quit();
}
/*
* Callback invoked after start to the preedit.
*/
/*ARGSUSED*/
static void
im_preedit_start_cb(GtkIMContext *context, gpointer data)
{
#ifdef XIM_DEBUG
xim_log("im_preedit_start_cb()\n");
#endif
im_is_active = TRUE;
gui_update_cursor(TRUE, FALSE);
}
/*
* Callback invoked after end to the preedit.
*/
/*ARGSUSED*/
static void
im_preedit_end_cb(GtkIMContext *context, gpointer data)
{
#ifdef XIM_DEBUG
xim_log("im_preedit_end_cb()\n");
#endif
im_delete_preedit();
/* Indicate that preediting has finished */
preedit_start_col = MAXCOL;
xim_has_preediting = FALSE;
im_is_active = FALSE;
gui_update_cursor(TRUE, FALSE);
im_show_info();
}
/*
* Callback invoked after changes to the preedit string. If the preedit
* string was empty before, remember the preedit start column so we know
* where to apply feedback attributes. Delete the previous preedit string
* if there was one, save the new preedit cursor offset, and put the new
* string into the input buffer.
*
* TODO: The pragmatic "put into input buffer" approach used here has
* several fundamental problems:
*
* - The characters in the preedit string are subject to remapping.
* That's broken, only the finally committed string should be remapped.
*
* - There is a race condition involved: The retrieved value for the
* current cursor position will be wrong if any unprocessed characters
* are still queued in the input buffer.
*
* - Due to the lack of synchronization between the file buffer in memory
* and any typed characters, it's practically impossible to implement the
* "retrieve_surrounding" and "delete_surrounding" signals reliably. IM
* modules for languages such as Thai are likely to rely on this feature
* for proper operation.
*
* Conclusions: I think support for preediting needs to be moved to the
* core parts of Vim. Ideally, until it has been committed, the preediting
* string should only be displayed and not affect the buffer content at all.
* The question how to deal with the synchronization issue still remains.
* Circumventing the input buffer is probably not desirable. Anyway, I think
* implementing "retrieve_surrounding" is the only hard problem.
*
* One way to solve all of this in a clean manner would be to queue all key
* press/release events "as is" in the input buffer, and apply the IM filtering
* at the receiving end of the queue. This, however, would have a rather large
* impact on the code base. If there is an easy way to force processing of all
* remaining input from within the "retrieve_surrounding" signal handler, this
* might not be necessary. Gotta ask on vim-dev for opinions.
*/
/*ARGSUSED1*/
static void
im_preedit_changed_cb(GtkIMContext *context, gpointer data)
{
char *preedit_string = NULL;
int cursor_index = 0;
int num_move_back = 0;
char_u *str;
char_u *p;
int i;
gtk_im_context_get_preedit_string(context,
&preedit_string, NULL,
&cursor_index);
#ifdef XIM_DEBUG
xim_log("im_preedit_changed_cb(): %s\n", preedit_string);
#endif
g_return_if_fail(preedit_string != NULL); /* just in case */
/* If preedit_start_col is MAXCOL set it to the current cursor position. */
if (preedit_start_col == MAXCOL && preedit_string[0] != '\0')
{
xim_has_preediting = TRUE;
/* Urgh, this breaks if the input buffer isn't empty now */
init_preedit_start_col();
}
else if (cursor_index == 0 && preedit_string[0] == '\0')
{
if (preedit_start_col == MAXCOL)
xim_has_preediting = FALSE;
/* If at the start position (after typing backspace)
* preedit_start_col must be reset. */
preedit_start_col = MAXCOL;
}
im_delete_preedit();
/*
* Compute the end of the preediting area: "preedit_end_col".
* According to the documentation of gtk_im_context_get_preedit_string(),
* the cursor_pos output argument returns the offset in bytes. This is
* unfortunately not true -- real life shows the offset is in characters,
* and the GTK+ source code agrees with me. Will file a bug later.
*/
if (preedit_start_col != MAXCOL)
preedit_end_col = preedit_start_col;
str = (char_u *)preedit_string;
for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i)
{
int is_composing;
is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p)));
/*
* These offsets are used as counters when generating <BS> and <Del>
* to delete the preedit string. So don't count composing characters
* unless 'delcombine' is enabled.
*/
if (!is_composing || p_deco)
{
if (i < cursor_index)
++im_preedit_cursor;
else
++im_preedit_trailing;
}
if (!is_composing && i >= cursor_index)
{
/* This is essentially the same as im_preedit_trailing, except
* composing characters are not counted even if p_deco is set. */
++num_move_back;
}
if (preedit_start_col != MAXCOL)
preedit_end_col += utf_ptr2cells(p);
}
if (p > str)
{
im_add_to_input(str, (int)(p - str));
im_correct_cursor(num_move_back);
}
g_free(preedit_string);
if (gtk_main_level() > 0)
gtk_main_quit();
}
/*
* Translate the Pango attributes at iter to Vim highlighting attributes.
* Ignore attributes not supported by Vim highlighting. This shouldn't have
* too much impact -- right now we handle even more attributes than necessary
* for the IM modules I tested with.
*/
static int
translate_pango_attributes(PangoAttrIterator *iter)
{
PangoAttribute *attr;
int char_attr = HL_NORMAL;
attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE);
if (attr != NULL && ((PangoAttrInt *)attr)->value
!= (int)PANGO_UNDERLINE_NONE)
char_attr |= HL_UNDERLINE;
attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT);
if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD)
char_attr |= HL_BOLD;
attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE);
if (attr != NULL && ((PangoAttrInt *)attr)->value
!= (int)PANGO_STYLE_NORMAL)
char_attr |= HL_ITALIC;
attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND);
if (attr != NULL)
{
const PangoColor *color = &((PangoAttrColor *)attr)->color;
/* Assume inverse if black background is requested */
if ((color->red | color->green | color->blue) == 0)
char_attr |= HL_INVERSE;
}
return char_attr;
}
/*
* Retrieve the highlighting attributes at column col in the preedit string.
* Return -1 if not in preediting mode or if col is out of range.
*/
int
im_get_feedback_attr(int col)
{
char *preedit_string = NULL;
PangoAttrList *attr_list = NULL;
int char_attr = -1;
if (xic == NULL)
return char_attr;
gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
if (preedit_string != NULL && attr_list != NULL)
{
int index;
/* Get the byte index as used by PangoAttrIterator */
for (index = 0; col > 0 && preedit_string[index] != '\0'; --col)
index += utfc_ptr2len_check((char_u *)preedit_string + index);
if (preedit_string[index] != '\0')
{
PangoAttrIterator *iter;
int start, end;
char_attr = HL_NORMAL;
iter = pango_attr_list_get_iterator(attr_list);
/* Extract all relevant attributes from the list. */
do
{
pango_attr_iterator_range(iter, &start, &end);
if (index >= start && index < end)
char_attr |= translate_pango_attributes(iter);
}
while (pango_attr_iterator_next(iter));
pango_attr_iterator_destroy(iter);
}
}
if (attr_list != NULL)
pango_attr_list_unref(attr_list);
g_free(preedit_string);
return char_attr;
}
void
xim_init(void)
{
#ifdef XIM_DEBUG
xim_log("xim_init()\n");
#endif
g_return_if_fail(gui.drawarea != NULL);
g_return_if_fail(gui.drawarea->window != NULL);
xic = gtk_im_multicontext_new();
g_object_ref(xic);
im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit",
G_CALLBACK(&im_commit_cb), NULL);
g_signal_connect(G_OBJECT(xic), "preedit_changed",
G_CALLBACK(&im_preedit_changed_cb), NULL);
g_signal_connect(G_OBJECT(xic), "preedit_start",
G_CALLBACK(&im_preedit_start_cb), NULL);
g_signal_connect(G_OBJECT(xic), "preedit_end",
G_CALLBACK(&im_preedit_end_cb), NULL);
gtk_im_context_set_client_window(xic, gui.drawarea->window);
}
void
im_shutdown(void)
{
#ifdef XIM_DEBUG
xim_log("im_shutdown()\n");
#endif
if (xic != NULL)
{
gtk_im_context_focus_out(xic);
g_object_unref(xic);
xic = NULL;
}
im_is_active = FALSE;
im_commit_handler_id = 0;
preedit_start_col = MAXCOL;
xim_has_preediting = FALSE;
}
/*
* Convert the string argument to keyval and state for GdkEventKey.
* If str is valid return TRUE, otherwise FALSE.
*
* See 'imactivatekey' for documentation of the format.
*/
static int
im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state)
{
const char *mods_end;
unsigned tmp_keyval;
unsigned tmp_state = 0;
mods_end = strrchr(str, '-');
mods_end = (mods_end != NULL) ? mods_end + 1 : str;
/* Parse modifier keys */
while (str < mods_end)
switch (*str++)
{
case '-': break;
case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break;
case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break;
case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break;
case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break;
case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break;
case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break;
case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break;
case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break;
default:
return FALSE;
}
tmp_keyval = gdk_keyval_from_name(str);
if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol)
return FALSE;
if (keyval != NULL)
*keyval = tmp_keyval;
if (state != NULL)
*state = tmp_state;
return TRUE;
}
/*
* Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an
* empty string is also regarded as valid.
*
* Note: The numerical key value of p_imak is cached if it was valid; thus
* boldly assuming im_xim_isvalid_imactivate() will always be called whenever
* 'imak' changes. This is currently the case but not obvious -- should
* probably rename the function for clarity.
*/
int
im_xim_isvalid_imactivate(void)
{
if (p_imak[0] == NUL)
{
im_activatekey_keyval = GDK_VoidSymbol;
im_activatekey_state = 0;
return TRUE;
}
return im_string_to_keyval((const char *)p_imak,
&im_activatekey_keyval,
&im_activatekey_state);
}
static void
im_synthesize_keypress(unsigned int keyval, unsigned int state)
{
GdkEventKey *event;
# ifdef HAVE_GTK_MULTIHEAD
event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS);
g_object_ref(gui.drawarea->window); /* unreffed by gdk_event_free() */
# else
event = (GdkEventKey *)g_malloc0((gulong)sizeof(GdkEvent));
event->type = GDK_KEY_PRESS;
# endif
event->window = gui.drawarea->window;
event->send_event = TRUE;
event->time = GDK_CURRENT_TIME;
event->state = state;
event->keyval = keyval;
event->hardware_keycode = /* needed for XIM */
XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval);
event->length = 0;
event->string = NULL;
gtk_im_context_filter_keypress(xic, event);
/* For consistency, also send the corresponding release event. */
event->type = GDK_KEY_RELEASE;
event->send_event = FALSE;
gtk_im_context_filter_keypress(xic, event);
# ifdef HAVE_GTK_MULTIHEAD
gdk_event_free((GdkEvent *)event);
# else
g_free(event);
# endif
}
void
xim_reset(void)
{
if (xic != NULL)
{
/*
* The third-party imhangul module (and maybe others too) ignores
* gtk_im_context_reset() or at least doesn't reset the active state.
* Thus sending imactivatekey would turn it off if it was on before,
* which is clearly not what we want. Fortunately we can work around
* that for imhangul by sending GDK_Escape, but I don't know if it
* works with all IM modules that support an activation key :/
*
* An alternative approach would be to destroy the IM context and
* recreate it. But that means loading/unloading the IM module on
* every mode switch, which causes a quite noticable delay even on
* my rather fast box...
* *
* Moreover, there are some XIM which cannot respond to
* im_synthesize_keypress(). we hope that they reset by
* xim_shutdown().
*/
if (im_activatekey_keyval != GDK_VoidSymbol && im_is_active)
im_synthesize_keypress(GDK_Escape, 0U);
gtk_im_context_reset(xic);
/*
* HACK for Ami: This sequence of function calls makes Ami handle
* the IM reset gratiously, without breaking loads of other stuff.
* It seems to force English mode as well, which is exactly what we
* want because it makes the Ami status display work reliably.
*/
gtk_im_context_set_use_preedit(xic, FALSE);
if (p_imdisable)
im_shutdown();
else
{
gtk_im_context_set_use_preedit(xic, TRUE);
xim_set_focus(gui.in_focus);
if (im_activatekey_keyval != GDK_VoidSymbol)
{
if (im_is_active)
{
g_signal_handler_block(xic, im_commit_handler_id);
im_synthesize_keypress(im_activatekey_keyval,
im_activatekey_state);
g_signal_handler_unblock(xic, im_commit_handler_id);
}
}
else
{
im_shutdown();
xim_init();
xim_set_focus(gui.in_focus);
}
}
}
preedit_start_col = MAXCOL;
xim_has_preediting = FALSE;
}
int
xim_queue_key_press_event(GdkEventKey *event, int down)
{
if (down)
{
/*
* Workaround GTK2 XIM 'feature' that always converts keypad keys to
* chars., even when not part of an IM sequence (ref. feature of
* gdk/gdkkeyuni.c).
* Flag any keypad keys that might represent a single char.
* If this (on its own - i.e., not part of an IM sequence) is
* committed while we're processing one of these keys, we can ignore
* that commit and go ahead & process it ourselves. That way we can
* still distinguish keypad keys for use in mappings.
*/
switch (event->keyval)
{
case GDK_KP_Add: xim_expected_char = '+'; break;
case GDK_KP_Subtract: xim_expected_char = '-'; break;
case GDK_KP_Divide: xim_expected_char = '/'; break;
case GDK_KP_Multiply: xim_expected_char = '*'; break;
case GDK_KP_Decimal: xim_expected_char = '.'; break;
case GDK_KP_Equal: xim_expected_char = '='; break;
case GDK_KP_0: xim_expected_char = '0'; break;
case GDK_KP_1: xim_expected_char = '1'; break;
case GDK_KP_2: xim_expected_char = '2'; break;
case GDK_KP_3: xim_expected_char = '3'; break;
case GDK_KP_4: xim_expected_char = '4'; break;
case GDK_KP_5: xim_expected_char = '5'; break;
case GDK_KP_6: xim_expected_char = '6'; break;
case GDK_KP_7: xim_expected_char = '7'; break;
case GDK_KP_8: xim_expected_char = '8'; break;
case GDK_KP_9: xim_expected_char = '9'; break;
default: xim_expected_char = NUL;
}
xim_ignored_char = FALSE;
}
/*
* When typing fFtT, XIM may be activated. Thus it must pass
* gtk_im_context_filter_keypress() in Normal mode.
* And while doing :sh too.
*/
if (xic != NULL && !p_imdisable
&& (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0)
{
/*
* Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is
* always aware of the current status of IM, and can even emulate
* the activation key for modules that don't support one.
*/
if (event->keyval == im_activatekey_keyval
&& (event->state & im_activatekey_state) == im_activatekey_state)
{
unsigned int state_mask;
/* Require the state of the 3 most used modifiers to match exactly.
* Otherwise e.g. <S-C-space> would be unusable for other purposes
* if the IM activate key is <S-space>. */
state_mask = im_activatekey_state;
state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK
| (int)GDK_MOD1_MASK);
if ((event->state & state_mask) != im_activatekey_state)
return FALSE;
/* Don't send it a second time on GDK_KEY_RELEASE. */
if (event->type != GDK_KEY_PRESS)
return TRUE;
if (map_to_exists_mode((char_u *)"", LANGMAP))
{
im_set_active(FALSE);
/* ":lmap" mappings exists, toggle use of mappings. */
State ^= LANGMAP;
if (State & LANGMAP)
{
curbuf->b_p_iminsert = B_IMODE_NONE;
State &= ~LANGMAP;
}
else
{
curbuf->b_p_iminsert = B_IMODE_LMAP;
State |= LANGMAP;
}
return TRUE;
}
return gtk_im_context_filter_keypress(xic, event);
}
/* Don't filter events through the IM context if IM isn't active
* right now. Unlike with GTK+ 1.2 we cannot rely on the IM module
* not doing anything before the activation key was sent. */
if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active)
{
int imresult = gtk_im_context_filter_keypress(xic, event);
/* Some XIM send following sequence:
* 1. preedited string.
* 2. committed string.
* 3. line changed key.
* 4. preedited string.
* 5. remove preedited string.
* if 3, Vim can't move back the above line for 5.
* thus, this part should not parse the key. */
if (!imresult && preedit_start_col != MAXCOL
&& event->keyval == GDK_Return)
{
im_synthesize_keypress(GDK_Return, 0U);
return FALSE;
}
/* If XIM tried to commit a keypad key as a single char.,
* ignore it so we can use the keypad key 'raw', for mappings. */
if (xim_expected_char != NUL && xim_ignored_char)
/* We had a keypad key, and XIM tried to thieve it */
return FALSE;
/* Normal processing */
return imresult;
}
}
return FALSE;
}
int
im_get_status(void)
{
return im_is_active;
}
# else /* !HAVE_GTK2 */
static int xim_is_active = FALSE; /* XIM should be active in the current
mode */
static int xim_has_focus = FALSE; /* XIM is really being used for Vim */
#ifdef FEAT_GUI_X11
static XIMStyle input_style;
static int status_area_enabled = TRUE;
#endif
#ifdef FEAT_GUI_GTK
# ifdef WIN3264
# include <gdk/gdkwin32.h>
# else
# include <gdk/gdkx.h>
# endif
#else
# ifdef PROTO
/* Define a few things to be able to generate prototypes while not configured
* for GTK. */
# define GSList int
# define gboolean int
typedef int GdkEvent;
typedef int GdkEventKey;
# define GdkIC int
# endif
#endif
#if defined(FEAT_GUI_GTK) || defined(PROTO) || defined(FEAT_GUI_KDE)
static int preedit_buf_len = 0;
static int xim_can_preediting INIT(= FALSE); /* XIM in showmode() */
static int xim_input_style;
#ifndef FEAT_GUI_GTK
# define gboolean int
#endif
static gboolean use_status_area = 0;
static int im_xim_str2keycode __ARGS((unsigned int *code, unsigned int *state));
static void im_xim_send_event_imactivate __ARGS((void));
/*
* Convert string to keycode and state for XKeyEvent.
* When string is valid return OK, when invalid return FAIL.
*
* See 'imactivatekey' documentation for the format.
*/
static int
im_xim_str2keycode(code, state)
unsigned int *code;
unsigned int *state;
{
int retval = OK;
int len;
unsigned keycode = 0, keystate = 0;
Window window;
Display *display;
char_u *flag_end;
char_u *str;
if (*p_imak != NUL)
{
len = STRLEN(p_imak);
for (flag_end = p_imak + len - 1;
flag_end > p_imak && *flag_end != '-'; --flag_end)
;
/* Parse modifier keys */
for (str = p_imak; str < flag_end; ++str)
{
switch (*str)
{
case 's': case 'S':
keystate |= ShiftMask;
break;
case 'l': case 'L':
keystate |= LockMask;
break;
case 'c': case 'C':
keystate |= ControlMask;
break;
case '1':
keystate |= Mod1Mask;
break;
case '2':
keystate |= Mod2Mask;
break;
case '3':
keystate |= Mod3Mask;
break;
case '4':
keystate |= Mod4Mask;
break;
case '5':
keystate |= Mod5Mask;
break;
case '-':
break;
default:
retval = FAIL;
}
}
if (*str == '-')
++str;
/* Get keycode from string. */
gui_get_x11_windis(&window, &display);
if (display)
keycode = XKeysymToKeycode(display, XStringToKeysym((char *)str));
if (keycode == 0)
retval = FAIL;
if (code != NULL)
*code = keycode;
if (state != NULL)
*state = keystate;
}
return retval;
}
static void
im_xim_send_event_imactivate()
{
/* Force turn on preedit state by symulate keypress event.
* Keycode and state is specified by 'imactivatekey'.
*/
XKeyEvent ev;
gui_get_x11_windis(&ev.window, &ev.display);
ev.root = RootWindow(ev.display, DefaultScreen(ev.display));
ev.subwindow = None;
ev.time = CurrentTime;
ev.x = 1;
ev.y = 1;
ev.x_root = 1;
ev.y_root = 1;
ev.same_screen = 1;
ev.type = KeyPress;
if (im_xim_str2keycode(&ev.keycode, &ev.state) == OK)
XSendEvent(ev.display, ev.window, 1, KeyPressMask, (XEvent*)&ev);
}
/*
* Return TRUE if 'imactivatekey' has a valid value.
*/
int
im_xim_isvalid_imactivate()
{
return im_xim_str2keycode(NULL, NULL) == OK;
}
#endif /* FEAT_GUI_GTK */
/*
* Switch using XIM on/off. This is used by the code that changes "State".
*/
void
im_set_active(active)
int active;
{
if (xic == NULL)
return;
/* If 'imdisable' is set, XIM is never active. */
if (p_imdisable)
active = FALSE;
#if !defined (FEAT_GUI_GTK) && !defined (FEAT_GUI_KDE)
else if (input_style & XIMPreeditPosition)
/* There is a problem in switching XIM off when preediting is used,
* and it is not clear how this can be solved. For now, keep XIM on
* all the time, like it was done in Vim 5.8. */
active = TRUE;
#endif
/* Remember the active state, it is needed when Vim gets keyboard focus. */
xim_is_active = active;
#ifdef FEAT_GUI_GTK
/* When 'imactivatekey' has valid key-string, try to control XIM preedit
* state. When 'imactivatekey' has no or invalid string, try old XIM
* focus control.
*/
if (*p_imak != NUL)
{
/* BASIC STRATEGY:
* Destroy old Input Context (XIC), and create new one. New XIC
* would have a state of preedit that is off. When argument:active
* is false, that's all. Else argument:active is true, send a key
* event specified by 'imactivatekey' to activate XIM preedit state.
*/
xim_is_active = TRUE; /* Disable old XIM focus control */
/* If we can monitor preedit state with preedit callback functions,
* try least creation of new XIC.
*/
if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS)
{
if (xim_can_preediting && !active)
{
/* Force turn off preedit state. With some IM
* implementations, we cannot turn off preedit state by
* symulate keypress event. It is why using such a method
* that destroy old IC (input context), and create new one.
* When create new IC, its preedit state is usually off.
*/
xim_reset();
xim_set_focus(FALSE);
gdk_ic_destroy(xic);
xim_init();
xim_can_preediting = FALSE;
}
else if (!xim_can_preediting && active)
im_xim_send_event_imactivate();
}
else
{
/* First, force destroy old IC, and create new one. It
* symulates "turning off preedit state".
*/
xim_set_focus(FALSE);
gdk_ic_destroy(xic);
xim_init();
xim_can_preediting = FALSE;
/* 2nd, when requested to activate IM, symulate this by sending
* the event.
*/
if (active)
{
im_xim_send_event_imactivate();
xim_can_preediting = TRUE;
}
}
}
else
{
# ifndef XIMPreeditUnKnown
/* X11R5 doesn't have these, it looks safe enough to define here. */
typedef unsigned long XIMPreeditState;
# define XIMPreeditUnKnown 0L
# define XIMPreeditEnable 1L
# define XIMPreeditDisable (1L<<1)
# define XNPreeditState "preeditState"
# endif
XIMPreeditState preedit_state = XIMPreeditUnKnown;
XVaNestedList preedit_attr;
XIC pxic;
preedit_attr = XVaCreateNestedList(0,
XNPreeditState, &preedit_state,
NULL);
pxic = ((GdkICPrivate *)xic)->xic;
if (!XGetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL))
{
XFree(preedit_attr);
preedit_attr = XVaCreateNestedList(0,
XNPreeditState,
active ? XIMPreeditEnable : XIMPreeditDisable,
NULL);
XSetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL);
xim_can_preediting = active;
xim_is_active = active;
}
XFree(preedit_attr);
}
if (xim_input_style & XIMPreeditCallbacks)
{
preedit_buf_len = 0;
init_preedit_start_col();
}
#else
# if 0
/* When had tested kinput2 + canna + Athena GUI version with
* 'imactivatekey' is "s-space", im_xim_send_event_imactivate() did not
* work correctly. It just inserted one space. I don't know why we
* couldn't switch state of XIM preediting. This is reason why these
* codes are commented out.
*/
/* First, force destroy old IC, and create new one. It symulates
* "turning off preedit state".
*/
xim_set_focus(FALSE);
XDestroyIC(xic);
xic = NULL;
xim_init();
/* 2nd, when requested to activate IM, symulate this by sending the
* event.
*/
if (active)
im_xim_send_event_imactivate();
# endif
#endif
xim_set_preedit();
}
/*
* Adjust using XIM for gaining or losing keyboard focus. Also called when
* "xim_is_active" changes.
*/
void
xim_set_focus(focus)
int focus;
{
if (xic == NULL)
return;
/*
* XIM only gets focus when the Vim window has keyboard focus and XIM has
* been set active for the current mode.
*/
if (focus && xim_is_active)
{
if (!xim_has_focus)
{
xim_has_focus = TRUE;
#ifdef FEAT_GUI_GTK
gdk_im_begin(xic, gui.drawarea->window);
#else
XSetICFocus(xic);
#endif
}
}
else
{
if (xim_has_focus)
{
xim_has_focus = FALSE;
#ifdef FEAT_GUI_GTK
gdk_im_end();
#else
XUnsetICFocus(xic);
#endif
}
}
}
#ifndef FEAT_GUI_KDE
/*ARGSUSED*/
void
im_set_position(row, col)
int row;
int col;
{
xim_set_preedit();
}
#endif
/*
* Set the XIM to the current cursor position.
*/
void
xim_set_preedit()
{
if (xic == NULL)
return;
xim_set_focus(TRUE);
#ifdef FEAT_GUI_GTK
if (gdk_im_ready())
{
int attrmask;
GdkICAttr *attr;
if (!xic_attr)
return;
attr = xic_attr;
attrmask = 0;
# ifdef FEAT_XFONTSET
if ((xim_input_style & (int)GDK_IM_PREEDIT_POSITION)
&& gui.fontset != NOFONTSET
&& gui.fontset->type == GDK_FONT_FONTSET)
{
if (!xim_has_focus)
{
if (attr->spot_location.y >= 0)
{
attr->spot_location.x = 0;
attr->spot_location.y = -100;
attrmask |= (int)GDK_IC_SPOT_LOCATION;
}
}
else
{
gint width, height;
if (attr->spot_location.x != TEXT_X(gui.col)
|| attr->spot_location.y != TEXT_Y(gui.row))
{
attr->spot_location.x = TEXT_X(gui.col);
attr->spot_location.y = TEXT_Y(gui.row);
attrmask |= (int)GDK_IC_SPOT_LOCATION;
}
gdk_window_get_size(gui.drawarea->window, &width, &height);
width -= 2 * gui.border_offset;
height -= 2 * gui.border_offset;
if (xim_input_style & (int)GDK_IM_STATUS_AREA)
height -= gui.char_height;
if (attr->preedit_area.width != width
|| attr->preedit_area.height != height)
{
attr->preedit_area.x = gui.border_offset;
attr->preedit_area.y = gui.border_offset;
attr->preedit_area.width = width;
attr->preedit_area.height = height;
attrmask |= (int)GDK_IC_PREEDIT_AREA;
}
if (attr->preedit_fontset != gui.current_font)
{
attr->preedit_fontset = gui.current_font;
attrmask |= (int)GDK_IC_PREEDIT_FONTSET;
}
}
}
# endif /* FEAT_XFONTSET */
if (xim_fg_color == INVALCOLOR)
{
xim_fg_color = gui.def_norm_pixel;
xim_bg_color = gui.def_back_pixel;
}
if (attr->preedit_foreground.pixel != xim_fg_color)
{
attr->preedit_foreground.pixel = xim_fg_color;
attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND;
}
if (attr->preedit_background.pixel != xim_bg_color)
{
attr->preedit_background.pixel = xim_bg_color;
attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND;
}
if (attrmask != 0)
gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask);
}
#else /* FEAT_GUI_GTK */
# ifdef FEAT_GUI_KDE
# else
{
XVaNestedList attr_list;
XRectangle spot_area;
XPoint over_spot;
int line_space;
if (!xim_has_focus)
{
/* hide XIM cursor */
over_spot.x = 0;
over_spot.y = -100; /* arbitrary invisible position */
attr_list = (XVaNestedList) XVaCreateNestedList(0,
XNSpotLocation,
&over_spot,
NULL);
XSetICValues(xic, XNPreeditAttributes, attr_list, NULL);
XFree(attr_list);
return;
}
if (input_style & XIMPreeditPosition)
{
if (xim_fg_color == INVALCOLOR)
{
xim_fg_color = gui.def_norm_pixel;
xim_bg_color = gui.def_back_pixel;
}
over_spot.x = TEXT_X(gui.col);
over_spot.y = TEXT_Y(gui.row);
spot_area.x = 0;
spot_area.y = 0;
spot_area.height = gui.char_height * Rows;
spot_area.width = gui.char_width * Columns;
line_space = gui.char_height;
attr_list = (XVaNestedList) XVaCreateNestedList(0,
XNSpotLocation, &over_spot,
XNForeground, (Pixel) xim_fg_color,
XNBackground, (Pixel) xim_bg_color,
XNArea, &spot_area,
XNLineSpace, line_space,
NULL);
if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL))
EMSG(_("E284: Cannot set IC values"));
XFree(attr_list);
}
}
# endif /* FEAT_GUI_KDE */
#endif /* FEAT_GUI_GTK */
}
/*
* Set up the status area.
*
* This should use a separate Widget, but that seems not possible, because
* preedit_area and status_area should be set to the same window as for the
* text input. Unfortunately this means the status area pollutes the text
* window...
*/
void
xim_set_status_area()
{
if (xic == NULL)
return;
#ifdef FEAT_GUI_GTK
# if defined(FEAT_XFONTSET)
if (use_status_area)
{
GdkICAttr *attr;
int style;
gint width, height;
GtkWidget *widget;
int attrmask;
if (!xic_attr)
return;
attr = xic_attr;
attrmask = 0;
style = (int)gdk_ic_get_style(xic);
if ((style & (int)GDK_IM_STATUS_MASK) == (int)GDK_IM_STATUS_AREA)
{
if (gui.fontset != NOFONTSET
&& gui.fontset->type == GDK_FONT_FONTSET)
{
widget = gui.mainwin;
gdk_window_get_size(widget->window, &width, &height);
attrmask |= (int)GDK_IC_STATUS_AREA;
attr->status_area.x = 0;
attr->status_area.y = height - gui.char_height - 1;
attr->status_area.width = width;
attr->status_area.height = gui.char_height;
}
}
if (attrmask != 0)
gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask);
}
# endif
#else
# ifdef FEAT_GUI_KDE
# else
{
XVaNestedList preedit_list = 0, status_list = 0, list = 0;
XRectangle pre_area, status_area;
if (input_style & XIMStatusArea)
{
if (input_style & XIMPreeditArea)
{
XRectangle *needed_rect;
/* to get status_area width */
status_list = XVaCreateNestedList(0, XNAreaNeeded,
&needed_rect, NULL);
XGetICValues(xic, XNStatusAttributes, status_list, NULL);
XFree(status_list);
status_area.width = needed_rect->width;
}
else
status_area.width = gui.char_width * Columns;
status_area.x = 0;
status_area.y = gui.char_height * Rows + gui.border_offset;
if (gui.which_scrollbars[SBAR_BOTTOM])
status_area.y += gui.scrollbar_height;
#ifdef FEAT_MENU
if (gui.menu_is_active)
status_area.y += gui.menu_height;
#endif
status_area.height = gui.char_height;
status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL);
}
else
{
status_area.x = 0;
status_area.y = gui.char_height * Rows + gui.border_offset;
if (gui.which_scrollbars[SBAR_BOTTOM])
status_area.y += gui.scrollbar_height;
#ifdef FEAT_MENU
if (gui.menu_is_active)
status_area.y += gui.menu_height;
#endif
status_area.width = 0;
status_area.height = gui.char_height;
}
if (input_style & XIMPreeditArea) /* off-the-spot */
{
pre_area.x = status_area.x + status_area.width;
pre_area.y = gui.char_height * Rows + gui.border_offset;
pre_area.width = gui.char_width * Columns - pre_area.x;
if (gui.which_scrollbars[SBAR_BOTTOM])
pre_area.y += gui.scrollbar_height;
#ifdef FEAT_MENU
if (gui.menu_is_active)
pre_area.y += gui.menu_height;
#endif
pre_area.height = gui.char_height;
preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
}
else if (input_style & XIMPreeditPosition) /* over-the-spot */
{
pre_area.x = 0;
pre_area.y = 0;
pre_area.height = gui.char_height * Rows;
pre_area.width = gui.char_width * Columns;
preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL);
}
if (preedit_list && status_list)
list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
XNStatusAttributes, status_list, NULL);
else if (preedit_list)
list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list,
NULL);
else if (status_list)
list = XVaCreateNestedList(0, XNStatusAttributes, status_list,
NULL);
else
list = NULL;
if (list)
{
XSetICValues(xic, XNVaNestedList, list, NULL);
XFree(list);
}
if (status_list)
XFree(status_list);
if (preedit_list)
XFree(preedit_list);
}
# endif /* FEAT_GUI_KDE */
#endif
}
#if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) || defined(FEAT_GUI_KDE)
static char e_xim[] = N_("E285: Failed to create input context");
#endif
#if defined(FEAT_GUI_X11) || defined(PROTO)
# if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(sun)
# define USE_X11R6_XIM
# endif
static int xim_real_init __ARGS((Window x11_window, Display *x11_display));
#ifdef USE_X11R6_XIM
static void xim_instantiate_cb __ARGS((Display *display, XPointer client_data, XPointer call_data));
static void xim_destroy_cb __ARGS((XIM im, XPointer client_data, XPointer call_data));
/*ARGSUSED*/
static void
xim_instantiate_cb(display, client_data, call_data)
Display *display;
XPointer client_data;
XPointer call_data;
{
Window x11_window;
Display *x11_display;
#ifdef XIM_DEBUG
xim_log("xim_instantiate_cb()\n");
#endif
gui_get_x11_windis(&x11_window, &x11_display);
if (display != x11_display)
return;
xim_real_init(x11_window, x11_display);
gui_set_shellsize(FALSE, FALSE);
if (xic != NULL)
XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
xim_instantiate_cb, NULL);
}
/*ARGSUSED*/
static void
xim_destroy_cb(im, client_data, call_data)
XIM im;
XPointer client_data;
XPointer call_data;
{
Window x11_window;
Display *x11_display;
#ifdef XIM_DEBUG
xim_log("xim_destroy_cb()\n");
#endif
gui_get_x11_windis(&x11_window, &x11_display);
xic = NULL;
status_area_enabled = FALSE;
gui_set_shellsize(FALSE, FALSE);
XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
xim_instantiate_cb, NULL);
}
#endif
void
xim_init()
{
Window x11_window;
Display *x11_display;
#ifdef XIM_DEBUG
xim_log("xim_init()\n");
#endif
gui_get_x11_windis(&x11_window, &x11_display);
xic = NULL;
if (xim_real_init(x11_window, x11_display))
return;
gui_set_shellsize(FALSE, FALSE);
#ifdef USE_X11R6_XIM
XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL,
xim_instantiate_cb, NULL);
#endif
}
static int
xim_real_init(x11_window, x11_display)
Window x11_window;
Display *x11_display;
{
int i;
char *p,
*s,
*ns,
*end,
tmp[1024];
#define IMLEN_MAX 40
char buf[IMLEN_MAX + 7];
XIM xim = NULL;
XIMStyles *xim_styles;
XIMStyle this_input_style = 0;
Boolean found;
XPoint over_spot;
XVaNestedList preedit_list, status_list;
input_style = 0;
status_area_enabled = FALSE;
if (xic != NULL)
return FALSE;
if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL)
{
strcpy(tmp, gui.rsrc_input_method);
for (ns = s = tmp; ns != NULL && *s != NUL;)
{
s = (char *)skipwhite((char_u *)s);
if (*s == NUL)
break;
if ((ns = end = strchr(s, ',')) == NULL)
end = s + strlen(s);
while (isspace(((char_u *)end)[-1]))
end--;
*end = NUL;
if (strlen(s) <= IMLEN_MAX)
{
strcpy(buf, "@im=");
strcat(buf, s);
if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL
&& (xim = XOpenIM(x11_display, NULL, NULL, NULL))
!= NULL)
break;
}
s = ns + 1;
}
}
if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL)
xim = XOpenIM(x11_display, NULL, NULL, NULL);
/* This is supposed to be useful to obtain characters through
* XmbLookupString() without really using a XIM. */
if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL
&& *p != NUL)
xim = XOpenIM(x11_display, NULL, NULL, NULL);
if (xim == NULL)
{
/* Only give this message when verbose is set, because too many people
* got this message when they didn't want to use a XIM. */
if (p_verbose > 0)
EMSG(_("E286: Failed to open input method"));
return FALSE;
}
#ifdef USE_X11R6_XIM
{
XIMCallback destroy_cb;
destroy_cb.callback = xim_destroy_cb;
destroy_cb.client_data = NULL;
if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL))
EMSG(_("E287: Warning: Could not set destroy callback to IM"));
}
#endif
if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles)
{
EMSG(_("E288: input method doesn't support any style"));
XCloseIM(xim);
return FALSE;
}
found = False;
strcpy(tmp, gui.rsrc_preedit_type_name);
for (s = tmp; s && !found; )
{
while (*s && isspace((unsigned char)*s))
s++;
if (!*s)
break;
if ((ns = end = strchr(s, ',')) != 0)
ns++;
else
end = s + strlen(s);
while (isspace((unsigned char)*end))
end--;
*end = '\0';
if (!strcmp(s, "OverTheSpot"))
this_input_style = (XIMPreeditPosition | XIMStatusArea);
else if (!strcmp(s, "OffTheSpot"))
this_input_style = (XIMPreeditArea | XIMStatusArea);
else if (!strcmp(s, "Root"))
this_input_style = (XIMPreeditNothing | XIMStatusNothing);
for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
{
if (this_input_style == xim_styles->supported_styles[i])
{
found = True;
break;
}
}
if (!found)
for (i = 0; (unsigned short)i < xim_styles->count_styles; i++)
{
if ((xim_styles->supported_styles[i] & this_input_style)
== (this_input_style & ~XIMStatusArea))
{
this_input_style &= ~XIMStatusArea;
found = True;
break;
}
}
s = ns;
}
XFree(xim_styles);
if (!found)
{
/* Only give this message when verbose is set, because too many people
* got this message when they didn't want to use a XIM. */
if (p_verbose > 0)
EMSG(_("E289: input method doesn't support my preedit type"));
XCloseIM(xim);
return FALSE;
}
over_spot.x = TEXT_X(gui.col);
over_spot.y = TEXT_Y(gui.row);
input_style = this_input_style;
/* A crash was reported when trying to pass gui.norm_font as XNFontSet,
* thus that has been removed. Hopefully the default works... */
#ifdef FEAT_XFONTSET
if (gui.fontset != NOFONTSET)
{
preedit_list = XVaCreateNestedList(0,
XNSpotLocation, &over_spot,
XNForeground, (Pixel)gui.def_norm_pixel,
XNBackground, (Pixel)gui.def_back_pixel,
XNFontSet, (XFontSet)gui.fontset,
NULL);
status_list = XVaCreateNestedList(0,
XNForeground, (Pixel)gui.def_norm_pixel,
XNBackground, (Pixel)gui.def_back_pixel,
XNFontSet, (XFontSet)gui.fontset,
NULL);
}
else
#endif
{
preedit_list = XVaCreateNestedList(0,
XNSpotLocation, &over_spot,
XNForeground, (Pixel)gui.def_norm_pixel,
XNBackground, (Pixel)gui.def_back_pixel,
NULL);
status_list = XVaCreateNestedList(0,
XNForeground, (Pixel)gui.def_norm_pixel,
XNBackground, (Pixel)gui.def_back_pixel,
NULL);
}
xic = XCreateIC(xim,
XNInputStyle, input_style,
XNClientWindow, x11_window,
XNFocusWindow, gui.wid,
XNPreeditAttributes, preedit_list,
XNStatusAttributes, status_list,
NULL);
XFree(status_list);
XFree(preedit_list);
if (xic != NULL)
{
if (input_style & XIMStatusArea)
{
xim_set_status_area();
status_area_enabled = TRUE;
}
else
gui_set_shellsize(FALSE, FALSE);
}
else
{
EMSG(_(e_xim));
XCloseIM(xim);
return FALSE;
}
return TRUE;
}
#endif /* FEAT_GUI_X11 */
#if defined(FEAT_GUI_GTK) || defined(PROTO)
# ifdef FEAT_XFONTSET
static char e_overthespot[] = N_("E290: over-the-spot style requires fontset");
# endif
# ifdef PROTO
typedef int GdkIC;
# endif
void
xim_decide_input_style()
{
/* GDK_IM_STATUS_CALLBACKS was disabled, enabled it to allow Japanese
* OverTheSpot. */
int supported_style = (int)GDK_IM_PREEDIT_NONE |
(int)GDK_IM_PREEDIT_NOTHING |
(int)GDK_IM_PREEDIT_POSITION |
(int)GDK_IM_PREEDIT_CALLBACKS |
(int)GDK_IM_STATUS_CALLBACKS |
(int)GDK_IM_STATUS_AREA |
(int)GDK_IM_STATUS_NONE |
(int)GDK_IM_STATUS_NOTHING;
#ifdef XIM_DEBUG
xim_log("xim_decide_input_style()\n");
#endif
if (!gdk_im_ready())
xim_input_style = 0;
else
{
if (gtk_major_version > 1
|| (gtk_major_version == 1
&& (gtk_minor_version > 2
|| (gtk_minor_version == 2 && gtk_micro_version >= 3))))
use_status_area = TRUE;
else
{
EMSG(_("E291: Your GTK+ is older than 1.2.3. Status area disabled"));
use_status_area = FALSE;
}
#ifdef FEAT_XFONTSET
if (gui.fontset == NOFONTSET || gui.fontset->type != GDK_FONT_FONTSET)
#endif
supported_style &= ~((int)GDK_IM_PREEDIT_POSITION
| (int)GDK_IM_STATUS_AREA);
if (!use_status_area)
supported_style &= ~(int)GDK_IM_STATUS_AREA;
xim_input_style = (int)gdk_im_decide_style((GdkIMStyle)supported_style);
}
}
/*ARGSUSED*/
static void
preedit_start_cbproc(XIC xic, XPointer client_data, XPointer call_data)
{
#ifdef XIM_DEBUG
xim_log("xim_decide_input_style()\n");
#endif
draw_feedback = NULL;
xim_can_preediting = TRUE;
xim_has_preediting = TRUE;
gui_update_cursor(TRUE, FALSE);
if (showmode() > 0)
{
setcursor();
out_flush();
}
}
static void
xim_back_delete(int n)
{
char_u str[3];
str[0] = CSI;
str[1] = 'k';
str[2] = 'b';
while (n-- > 0)
add_to_input_buf(str, 3);
}
static GSList *key_press_event_queue = NULL;
static gboolean processing_queued_event = FALSE;
/*ARGSUSED*/
static void
preedit_draw_cbproc(XIC xic, XPointer client_data, XPointer call_data)
{
XIMPreeditDrawCallbackStruct *draw_data;
XIMText *text;
char *src;
GSList *event_queue;
#ifdef XIM_DEBUG
xim_log("preedit_draw_cbproc()\n");
#endif
draw_data = (XIMPreeditDrawCallbackStruct *) call_data;
text = (XIMText *) draw_data->text;
if ((text == NULL && draw_data->chg_length == preedit_buf_len)
|| preedit_buf_len == 0)
{
init_preedit_start_col();
vim_free(draw_feedback);
draw_feedback = NULL;
}
if (draw_data->chg_length > 0)
{
int bs_cnt;
if (draw_data->chg_length > preedit_buf_len)
bs_cnt = preedit_buf_len;
else
bs_cnt = draw_data->chg_length;
xim_back_delete(bs_cnt);
preedit_buf_len -= bs_cnt;
}
if (text != NULL)
{
int len;
#ifdef FEAT_MBYTE
char_u *buf = NULL;
unsigned int nfeedback = 0;
#endif
char_u *ptr;
src = text->string.multi_byte;
if (src != NULL && !text->encoding_is_wchar)
{
len = strlen(src);
ptr = (char_u *)src;
/* Avoid the enter for decision */
if (*ptr == '\n')
return;
#ifdef FEAT_MBYTE
if (input_conv.vc_type != CONV_NONE
&& (buf = string_convert(&input_conv,
(char_u *)src, &len)) != NULL)
{
/* Converted from 'termencoding' to 'encoding'. */
add_to_input_buf_csi(buf, len);
ptr = buf;
}
else
#endif
add_to_input_buf_csi((char_u *)src, len);
/* Add count of character to preedit_buf_len */
while (*ptr != NUL)
{
#ifdef FEAT_MBYTE
if (draw_data->text->feedback != NULL)
{
if (draw_feedback == NULL)
draw_feedback = (char *)alloc(draw_data->chg_first
+ text->length);
else
draw_feedback = realloc(draw_feedback,
draw_data->chg_first + text->length);
if (draw_feedback != NULL)
{
draw_feedback[nfeedback + draw_data->chg_first]
= draw_data->text->feedback[nfeedback];
nfeedback++;
}
}
if (has_mbyte)
ptr += mb_ptr2len_check(ptr);
else
#endif
ptr++;
preedit_buf_len++;
}
#ifdef FEAT_MBYTE
vim_free(buf);
#endif
preedit_end_col = MAXCOL;
}
}
if (text != NULL || draw_data->chg_length > 0)
{
event_queue = key_press_event_queue;
processing_queued_event = TRUE;
while (event_queue != NULL && processing_queued_event)
{
GdkEvent *ev = event_queue->data;
gboolean *ret;
gtk_signal_emit_by_name((GtkObject*)gui.mainwin, "key_press_event",
ev, &ret);
gdk_event_free(ev);
event_queue = event_queue->next;
}
processing_queued_event = FALSE;
if (key_press_event_queue)
{
g_slist_free(key_press_event_queue);
key_press_event_queue = NULL;
}
}
if (gtk_main_level() > 0)
gtk_main_quit();
}
/*
* Retrieve the highlighting attributes at column col in the preedit string.
* Return -1 if not in preediting mode or if col is out of range.
*/
int
im_get_feedback_attr(int col)
{
if (draw_feedback != NULL && col < preedit_buf_len)
{
if (draw_feedback[col] & XIMReverse)
return HL_INVERSE;
else if (draw_feedback[col] & XIMUnderline)
return HL_UNDERLINE;
else
return hl_attr(HLF_V);
}
return -1;
}
/*ARGSUSED*/
static void
preedit_caret_cbproc(XIC xic, XPointer client_data, XPointer call_data)
{
#ifdef XIM_DEBUG
xim_log("preedit_caret_cbproc()\n");
#endif
}
/*ARGSUSED*/
static void
preedit_done_cbproc(XIC xic, XPointer client_data, XPointer call_data)
{
#ifdef XIM_DEBUG
xim_log("preedit_done_cbproc()\n");
#endif
vim_free(draw_feedback);
draw_feedback = NULL;
xim_can_preediting = FALSE;
xim_has_preediting = FALSE;
gui_update_cursor(TRUE, FALSE);
if (showmode() > 0)
{
setcursor();
out_flush();
}
}
void
xim_reset(void)
{
char *text;
#ifdef XIM_DEBUG
xim_log("xim_reset()\n");
#endif
if (xic != NULL)
{
text = XmbResetIC(((GdkICPrivate *)xic)->xic);
if (text != NULL && !(xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS))
add_to_input_buf_csi((char_u *)text, strlen(text));
else
preedit_buf_len = 0;
if (text != NULL)
XFree(text);
}
}
/*ARGSUSED*/
int
xim_queue_key_press_event(GdkEventKey *event, int down)
{
#ifdef XIM_DEBUG
xim_log("xim_queue_key_press_event()\n");
#endif
if (preedit_buf_len <= 0)
return FALSE;
if (processing_queued_event)
processing_queued_event = FALSE;
key_press_event_queue = g_slist_append(key_press_event_queue,
gdk_event_copy((GdkEvent *)event));
return TRUE;
}
/*ARGSUSED*/
static void
preedit_callback_setup(GdkIC *ic)
{
XIC xxic;
XVaNestedList preedit_attr;
XIMCallback preedit_start_cb;
XIMCallback preedit_draw_cb;
XIMCallback preedit_caret_cb;
XIMCallback preedit_done_cb;
xxic = ((GdkICPrivate*)xic)->xic;
preedit_start_cb.callback = (XIMProc)preedit_start_cbproc;
preedit_draw_cb.callback = (XIMProc)preedit_draw_cbproc;
preedit_caret_cb.callback = (XIMProc)preedit_caret_cbproc;
preedit_done_cb.callback = (XIMProc)preedit_done_cbproc;
preedit_attr
= XVaCreateNestedList (0,
XNPreeditStartCallback, &preedit_start_cb,
XNPreeditDrawCallback, &preedit_draw_cb,
XNPreeditCaretCallback, &preedit_caret_cb,
XNPreeditDoneCallback, &preedit_done_cb,
0);
XSetICValues (xxic, XNPreeditAttributes, preedit_attr, 0);
XFree(preedit_attr);
}
/*ARGSUSED*/
static void
reset_state_setup(GdkIC *ic)
{
#ifdef USE_X11R6_XIM
/* don't change the input context when we call reset */
XSetICValues(((GdkICPrivate*)ic)->xic, XNResetState, XIMPreserveState, 0);
#endif
}
void
xim_init(void)
{
#ifdef XIM_DEBUG
xim_log("xim_init()\n");
#endif
xic = NULL;
xic_attr = NULL;
if (!gdk_im_ready())
{
if (p_verbose > 0)
EMSG(_("E292: Input Method Server is not running"));
return;
}
if ((xic_attr = gdk_ic_attr_new()) != NULL)
{
#ifdef FEAT_XFONTSET
gint width, height;
#endif
int mask;
GdkColormap *colormap;
GdkICAttr *attr = xic_attr;
int attrmask = (int)GDK_IC_ALL_REQ;
GtkWidget *widget = gui.drawarea;
attr->style = (GdkIMStyle)xim_input_style;
attr->client_window = gui.mainwin->window;
if ((colormap = gtk_widget_get_colormap(widget)) !=
gtk_widget_get_default_colormap())
{
attrmask |= (int)GDK_IC_PREEDIT_COLORMAP;
attr->preedit_colormap = colormap;
}
attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND;
attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND;
attr->preedit_foreground = widget->style->fg[GTK_STATE_NORMAL];
attr->preedit_background = widget->style->base[GTK_STATE_NORMAL];
#ifdef FEAT_XFONTSET
if ((xim_input_style & (int)GDK_IM_PREEDIT_MASK)
== (int)GDK_IM_PREEDIT_POSITION)
{
if (gui.fontset == NOFONTSET
|| gui.fontset->type != GDK_FONT_FONTSET)
{
EMSG(_(e_overthespot));
}
else
{
gdk_window_get_size(widget->window, &width, &height);
attrmask |= (int)GDK_IC_PREEDIT_POSITION_REQ;
attr->spot_location.x = TEXT_X(0);
attr->spot_location.y = TEXT_Y(0);
attr->preedit_area.x = gui.border_offset;
attr->preedit_area.y = gui.border_offset;
attr->preedit_area.width = width - 2*gui.border_offset;
attr->preedit_area.height = height - 2*gui.border_offset;
attr->preedit_fontset = gui.fontset;
}
}
if ((xim_input_style & (int)GDK_IM_STATUS_MASK)
== (int)GDK_IM_STATUS_AREA)
{
if (gui.fontset == NOFONTSET
|| gui.fontset->type != GDK_FONT_FONTSET)
{
EMSG(_(e_overthespot));
}
else
{
gdk_window_get_size(gui.mainwin->window, &width, &height);
attrmask |= (int)GDK_IC_STATUS_AREA_REQ;
attr->status_area.x = 0;
attr->status_area.y = height - gui.char_height - 1;
attr->status_area.width = width;
attr->status_area.height = gui.char_height;
attr->status_fontset = gui.fontset;
}
}
else if ((xim_input_style & (int)GDK_IM_STATUS_MASK)
== (int)GDK_IM_STATUS_CALLBACKS)
{
/* FIXME */
}
#endif
xic = gdk_ic_new(attr, (GdkICAttributesType)attrmask);
if (xic == NULL)
EMSG(_(e_xim));
else
{
mask = (int)gdk_window_get_events(widget->window);
mask |= (int)gdk_ic_get_events(xic);
gdk_window_set_events(widget->window, (GdkEventMask)mask);
if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS)
preedit_callback_setup(xic);
reset_state_setup(xic);
}
}
}
void
im_shutdown(void)
{
#ifdef XIM_DEBUG
xim_log("im_shutdown()\n");
#endif
if (xic != NULL)
{
gdk_im_end();
gdk_ic_destroy(xic);
xic = NULL;
}
xim_is_active = FALSE;
xim_can_preediting = FALSE;
preedit_start_col = MAXCOL;
xim_has_preediting = FALSE;
}
#endif /* FEAT_GUI_GTK */
int
xim_get_status_area_height()
{
#ifdef FEAT_GUI_GTK
if (xim_input_style & (int)GDK_IM_STATUS_AREA)
return gui.char_height;
#else
# if defined FEAT_GUI_KDE
/* always return zero? */
# else
if (status_area_enabled)
return gui.char_height;
# endif
#endif
return 0;
}
/*
* Get IM status. When IM is on, return TRUE. Else return FALSE.
* FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is
* active, when not having focus XIM may still be active (e.g., when using a
* tear-off menu item).
*/
int
im_get_status()
{
# ifdef FEAT_GUI_GTK
if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS)
return xim_can_preediting;
# endif
# ifdef FEAT_GUI_KDE
if (preedit_start_col != MAXCOL)
return TRUE;
# endif
return xim_has_focus;
}
# endif /* !HAVE_GTK2 */
# if defined(FEAT_GUI_GTK) || defined(PROTO)
int
im_is_preediting()
{
return xim_has_preediting;
}
# endif
#endif /* FEAT_XIM */
#if defined(FEAT_MBYTE) || defined(PROTO)
/*
* Setup "vcp" for conversion from "from" to "to".
* The names must have been made canonical with enc_canonize().
* vcp->vc_type must have been initialized to CONV_NONE.
* Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8
* instead).
* Afterwards invoke with "from" and "to" equal to NULL to cleanup.
* Return FAIL when conversion is not supported, OK otherwise.
*/
int
convert_setup(vcp, from, to)
vimconv_T *vcp;
char_u *from;
char_u *to;
{
int from_prop;
int to_prop;
/* Reset to no conversion. */
# ifdef USE_ICONV
if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1)
iconv_close(vcp->vc_fd);
# endif
vcp->vc_type = CONV_NONE;
vcp->vc_factor = 1;
vcp->vc_fail = FALSE;
/* No conversion when one of the names is empty or they are equal. */
if (from == NULL || *from == NUL || to == NULL || *to == NUL
|| STRCMP(from, to) == 0)
return OK;
from_prop = enc_canon_props(from);
to_prop = enc_canon_props(to);
if ((from_prop & ENC_LATIN1) && (to_prop & ENC_UNICODE))
{
/* Internal latin1 -> utf-8 conversion. */
vcp->vc_type = CONV_TO_UTF8;
vcp->vc_factor = 2; /* up to twice as long */
}
else if ((from_prop & ENC_LATIN9) && (to_prop & ENC_UNICODE))
{
/* Internal latin9 -> utf-8 conversion. */
vcp->vc_type = CONV_9_TO_UTF8;
vcp->vc_factor = 3; /* up to three as long (euro sign) */
}
else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_LATIN1))
{
/* Internal utf-8 -> latin1 conversion. */
vcp->vc_type = CONV_TO_LATIN1;
}
else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_LATIN9))
{
/* Internal utf-8 -> latin9 conversion. */
vcp->vc_type = CONV_TO_LATIN9;
}
#ifdef WIN3264
/* Win32-specific codepage <-> codepage conversion without iconv. */
else if (((from_prop & ENC_UNICODE) || encname2codepage(from) > 0)
&& ((to_prop & ENC_UNICODE) || encname2codepage(to) > 0))
{
vcp->vc_type = CONV_CODEPAGE;
vcp->vc_factor = 2; /* up to twice as long */
vcp->vc_cpfrom = (from_prop & ENC_UNICODE) ? 0 : encname2codepage(from);
vcp->vc_cpto = (to_prop & ENC_UNICODE) ? 0 : encname2codepage(to);
}
#endif
#ifdef MACOS_X
else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1))
{
vcp->vc_type = CONV_MAC_LATIN1;
}
else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_UNICODE))
{
vcp->vc_type = CONV_MAC_UTF8;
vcp->vc_factor = 2; /* up to twice as long */
}
else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN))
{
vcp->vc_type = CONV_LATIN1_MAC;
}
else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_MACROMAN))
{
vcp->vc_type = CONV_UTF8_MAC;
}
#endif
# ifdef USE_ICONV
else
{
/* Use iconv() for conversion. */
vcp->vc_fd = (iconv_t)my_iconv_open(
(to_prop & ENC_UNICODE) ? (char_u *)"utf-8" : to,
(from_prop & ENC_UNICODE) ? (char_u *)"utf-8" : from);
if (vcp->vc_fd != (iconv_t)-1)
{
vcp->vc_type = CONV_ICONV;
vcp->vc_factor = 4; /* could be longer too... */
}
}
# endif
if (vcp->vc_type == CONV_NONE)
return FAIL;
return OK;
}
#if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \
|| defined(MSDOS) || defined(PROTO)
/*
* Do conversion on typed input characters in-place.
* The input and output are not NUL terminated!
* Returns the length after conversion.
*/
int
convert_input(ptr, len, maxlen)
char_u *ptr;
int len;
int maxlen;
{
return convert_input_safe(ptr, len, maxlen, NULL, NULL);
}
#endif
/*
* Like convert_input(), but when there is an incomplete byte sequence at the
* end return that as an allocated string in "restp" and set "*restlenp" to
* the length. If "restp" is NULL it is not used.
*/
int
convert_input_safe(ptr, len, maxlen, restp, restlenp)
char_u *ptr;
int len;
int maxlen;
char_u **restp;
int *restlenp;
{
char_u *d;
int dlen = len;
int unconvertlen = 0;
d = string_convert_ext(&input_conv, ptr, &dlen,
restp == NULL ? NULL : &unconvertlen);
if (d != NULL)
{
if (dlen <= maxlen)
{
if (unconvertlen > 0)
{
/* Move the unconverted characters to allocated memory. */
*restp = alloc(unconvertlen);
if (*restp != NULL)
mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen);
*restlenp = unconvertlen;
}
mch_memmove(ptr, d, dlen);
}
else
/* result is too long, keep the unconverted text (the caller must
* have done something wrong!) */
dlen = len;
vim_free(d);
}
return dlen;
}
#if defined(MACOS_X)
/* This is in os_mac_conv.c. */
extern char_u *mac_string_convert __ARGS((char_u *ptr, int len, int *lenp, int fail_on_error, int from, int to, int *unconvlenp));
#endif
/*
* Convert text "ptr[*lenp]" according to "vcp".
* Returns the result in allocated memory and sets "*lenp".
* When "lenp" is NULL, use NUL terminated strings.
* Illegal chars are often changed to "?", unless vcp->vc_fail is set.
* When something goes wrong, NULL is returned and "*lenp" is unchanged.
*/
char_u *
string_convert(vcp, ptr, lenp)
vimconv_T *vcp;
char_u *ptr;
int *lenp;
{
return string_convert_ext(vcp, ptr, lenp, NULL);
}
/*
* Like string_convert(), but when "unconvlenp" is not NULL and there are is
* an incomplete sequence at the end it is not converted and "*unconvlenp" is
* set to the number of remaining bytes.
*/
char_u *
string_convert_ext(vcp, ptr, lenp, unconvlenp)
vimconv_T *vcp;
char_u *ptr;
int *lenp;
int *unconvlenp;
{
char_u *retval = NULL;
char_u *d;
int len;
int i;
int l;
int c;
if (lenp == NULL)
len = (int)STRLEN(ptr);
else
len = *lenp;
if (len == 0)
return vim_strsave((char_u *)"");
switch (vcp->vc_type)
{
case CONV_TO_UTF8: /* latin1 to utf-8 conversion */
retval = alloc(len * 2 + 1);
if (retval == NULL)
break;
d = retval;
for (i = 0; i < len; ++i)
{
c = ptr[i];
if (c < 0x80)
*d++ = c;
else
{
*d++ = 0xc0 + ((unsigned)c >> 6);
*d++ = 0x80 + (c & 0x3f);
}
}
*d = NUL;
if (lenp != NULL)
*lenp = (int)(d - retval);
break;
case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */
retval = alloc(len * 3 + 1);
if (retval == NULL)
break;
d = retval;
for (i = 0; i < len; ++i)
{
c = ptr[i];
switch (c)
{
case 0xa4: c = 0x20ac; break; /* euro */
case 0xa6: c = 0x0160; break; /* S hat */
case 0xa8: c = 0x0161; break; /* S -hat */
case 0xb4: c = 0x017d; break; /* Z hat */
case 0xb8: c = 0x017e; break; /* Z -hat */
case 0xbc: c = 0x0152; break; /* OE */
case 0xbd: c = 0x0153; break; /* oe */
case 0xbe: c = 0x0178; break; /* Y */
}
d += utf_char2bytes(c, d);
}
*d = NUL;
if (lenp != NULL)
*lenp = (int)(d - retval);
break;
case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */
case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */
retval = alloc(len + 1);
if (retval == NULL)
break;
d = retval;
for (i = 0; i < len; ++i)
{
l = utf_ptr2len_check(ptr + i);
if (l == 0)
*d++ = NUL;
else if (l == 1)
{
if (unconvlenp != NULL && utf8len_tab[ptr[i]] > len - i)
{
/* Incomplete sequence at the end. */
*unconvlenp = len - i;
break;
}
*d++ = ptr[i];
}
else
{
c = utf_ptr2char(ptr + i);
if (vcp->vc_type == CONV_TO_LATIN9)
switch (c)
{
case 0x20ac: c = 0xa4; break; /* euro */
case 0x0160: c = 0xa6; break; /* S hat */
case 0x0161: c = 0xa8; break; /* S -hat */
case 0x017d: c = 0xb4; break; /* Z hat */
case 0x017e: c = 0xb8; break; /* Z -hat */
case 0x0152: c = 0xbc; break; /* OE */
case 0x0153: c = 0xbd; break; /* oe */
case 0x0178: c = 0xbe; break; /* Y */
case 0xa4:
case 0xa6:
case 0xa8:
case 0xb4:
case 0xb8:
case 0xbc:
case 0xbd:
case 0xbe: c = 0x100; break; /* not in latin9 */
}
if (!utf_iscomposing(c)) /* skip composing chars */
{
if (c < 0x100)
*d++ = c;
else if (vcp->vc_fail)
{
vim_free(retval);
return NULL;
}
else
{
*d++ = 0xbf;
if (utf_char2cells(c) > 1)
*d++ = '?';
}
}
i += l - 1;
}
}
*d = NUL;
if (lenp != NULL)
*lenp = (int)(d - retval);
break;
# ifdef MACOS_X
case CONV_MAC_LATIN1:
retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
'm', 'l', unconvlenp);
break;
case CONV_LATIN1_MAC:
retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
'l', 'm', unconvlenp);
break;
case CONV_MAC_UTF8:
retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
'm', 'u', unconvlenp);
break;
case CONV_UTF8_MAC:
retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail,
'u', 'm', unconvlenp);
break;
# endif
# ifdef USE_ICONV
case CONV_ICONV: /* conversion with output_conv.vc_fd */
retval = iconv_string(vcp, ptr, len, unconvlenp);
if (retval != NULL && lenp != NULL)
*lenp = (int)STRLEN(retval);
break;
# endif
# ifdef WIN3264
case CONV_CODEPAGE: /* codepage -> codepage */
{
int retlen;
int tmp_len;
short_u *tmp;
/* 1. codepage/UTF-8 -> ucs-2. */
if (vcp->vc_cpfrom == 0)
tmp_len = utf8_to_ucs2(ptr, len, NULL, NULL);
else
tmp_len = MultiByteToWideChar(vcp->vc_cpfrom, 0,
ptr, len, 0, 0);
tmp = (short_u *)alloc(sizeof(short_u) * tmp_len);
if (tmp == NULL)
break;
if (vcp->vc_cpfrom == 0)
utf8_to_ucs2(ptr, len, tmp, unconvlenp);
else
MultiByteToWideChar(vcp->vc_cpfrom, 0, ptr, len, tmp, tmp_len);
/* 2. ucs-2 -> codepage/UTF-8. */
if (vcp->vc_cpto == 0)
retlen = ucs2_to_utf8(tmp, tmp_len, NULL);
else
retlen = WideCharToMultiByte(vcp->vc_cpto, 0,
tmp, tmp_len, 0, 0, 0, 0);
retval = alloc(retlen + 1);
if (retval != NULL)
{
if (vcp->vc_cpto == 0)
ucs2_to_utf8(tmp, tmp_len, retval);
else
WideCharToMultiByte(vcp->vc_cpto, 0,
tmp, tmp_len, retval, retlen, 0, 0);
retval[retlen] = NUL;
if (lenp != NULL)
*lenp = retlen;
}
vim_free(tmp);
break;
}
# endif
}
return retval;
}
#endif
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