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vim/src/os_vms.c
Bram Moolenaar ebfec1c531 patch 9.0.1234: the code style has to be checked manually 
Problem:    The code style has to be checked manually.
Solution:   Add basic code style checks in a test.  Fix or avoid uncovered
            problems.
2023-01-22 21:14:53 +00:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
* VMS port by Henk Elbers
* VMS deport by Zoltan Arpadffy
*
* 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.
*/
#include "vim.h"
// define _generic_64 for use in time functions
#if !defined(VAX) && !defined(PROTO)
# include <gen64def.h>
#else
// based on Alpha's gen64def.h; the file is absent on VAX
typedef struct _generic_64 {
# pragma __nomember_alignment
__union { // You can treat me as...
// long long is not available on VAXen
// unsigned __int64 gen64$q_quadword; ...a single 64-bit value, or
unsigned int gen64$l_longword [2]; // ...two 32-bit values, or
unsigned short int gen64$w_word [4]; // ...four 16-bit values
} gen64$r_quad_overlay;
} GENERIC_64;
#endif
typedef struct
{
char class;
char type;
short width;
union
{
struct
{
char _basic[3];
char length;
} y;
int basic;
} x;
int extended;
} TT_MODE;
typedef struct
{
short buflen;
short itemcode;
char *bufadrs;
int *retlen;
} ITEM;
typedef struct
{
ITEM equ;
int nul;
} ITMLST1;
typedef struct
{
ITEM index;
ITEM string;
int nul;
} ITMLST2;
static TT_MODE orgmode;
static short iochan; // TTY I/O channel
static short iosb[4]; // IO status block
static int vms_match_num = 0;
static int vms_match_free = 0;
static char_u **vms_fmatch = NULL;
static char *Fspec_Rms; // rms file spec, passed implicitly between routines
static TT_MODE get_tty(void);
static void set_tty(int row, int col);
#define EXPL_ALLOC_INC 64
#define EQN(S1,S2,LN) (strncmp(S1,S2,LN) == 0)
#define SKIP_FOLLOWING_SLASHES(Str) do { while (Str[1] == '/') ++Str; } while (0)
/*
* vul_desc vult een descriptor met een string en de lengte
* hier van.
*/
static void
vul_desc(DESC *des, char *str)
{
des->dsc$b_dtype = DSC$K_DTYPE_T;
des->dsc$b_class = DSC$K_CLASS_S;
des->dsc$a_pointer = str;
des->dsc$w_length = str ? strlen(str) : 0;
}
/*
* vul_item vult een item met een aantal waarden
*/
static void
vul_item(ITEM *itm, short len, short cod, char *adr, int *ret)
{
itm->buflen = len;
itm->itemcode = cod;
itm->bufadrs = adr;
itm->retlen = ret;
}
void
mch_settmode(tmode_T tmode)
{
int status;
if ( tmode == TMODE_RAW )
set_tty(0, 0);
else
{
switch (orgmode.width)
{
case 132: OUT_STR_NF((char_u *)"\033[?3h\033>"); break;
case 80: OUT_STR_NF((char_u *)"\033[?3l\033>"); break;
default: break;
}
out_flush();
status = sys$qiow(0, iochan, IO$_SETMODE, iosb, 0, 0,
&orgmode, sizeof(TT_MODE), 0,0,0,0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
return;
(void)sys$dassgn(iochan);
iochan = 0;
}
}
static void
set_tty(int row, int col)
{
int status;
TT_MODE newmode; // New TTY mode bits
static short first_time = TRUE;
if (first_time)
{
orgmode = get_tty();
first_time = FALSE;
}
newmode = get_tty();
if (col)
newmode.width = col;
if (row)
newmode.x.y.length = row;
newmode.x.basic |= (TT$M_NOECHO | TT$M_HOSTSYNC);
newmode.x.basic &= ~TT$M_TTSYNC;
newmode.extended |= TT2$M_PASTHRU;
status = sys$qiow(0, iochan, IO$_SETMODE, iosb, 0, 0,
&newmode, sizeof(newmode), 0, 0, 0, 0);
if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
return;
}
static TT_MODE
get_tty(void)
{
static $DESCRIPTOR(odsc,"SYS$OUTPUT"); // output descriptor
int status;
TT_MODE tt_mode;
if (!iochan)
status = sys$assign(&odsc,&iochan,0,0);
status = sys$qiow(0, iochan, IO$_SENSEMODE, iosb, 0, 0,
&tt_mode, sizeof(tt_mode), 0, 0, 0, 0);
if (status != SS$_NORMAL || (iosb[0] & 0xFFFF) != SS$_NORMAL)
{
tt_mode.width = 0;
tt_mode.type = 0;
tt_mode.class = 0;
tt_mode.x.basic = 0;
tt_mode.x.y.length = 0;
tt_mode.extended = 0;
}
return(tt_mode);
}
/*
* Get the current window size in Rows and Columns.
*/
int
mch_get_shellsize(void)
{
TT_MODE tmode;
tmode = get_tty(); // get size from VMS
Columns = tmode.width;
Rows = tmode.x.y.length;
return OK;
}
/*
* Try to set the window size to Rows and new_Columns.
*/
void
mch_set_shellsize(void)
{
set_tty(Rows, Columns);
switch (Columns)
{
case 132: OUT_STR_NF((char_u *)"\033[?3h\033>"); break;
case 80: OUT_STR_NF((char_u *)"\033[?3l\033>"); break;
default: break;
}
out_flush();
screen_start();
}
char_u *
mch_getenv(char_u *lognam)
{
DESC d_file_dev, d_lognam ;
static char buffer[LNM$C_NAMLENGTH+1];
char_u *cp = NULL;
unsigned long attrib;
int lengte = 0, dum = 0, idx = 0;
ITMLST2 itmlst;
char *sbuf = NULL;
vul_desc(&d_lognam, (char *)lognam);
vul_desc(&d_file_dev, "LNM$FILE_DEV");
attrib = LNM$M_CASE_BLIND;
vul_item(&itmlst.index, sizeof(int), LNM$_INDEX, (char *)&idx, &dum);
vul_item(&itmlst.string, LNM$C_NAMLENGTH, LNM$_STRING, buffer, &lengte);
itmlst.nul = 0;
if (sys$trnlnm(&attrib, &d_file_dev, &d_lognam, NULL,&itmlst) == SS$_NORMAL)
{
buffer[lengte] = '\0';
if (cp = alloc(lengte + 1))
strcpy((char *)cp, buffer);
return(cp);
}
else if ((sbuf = getenv((char *)lognam)))
{
lengte = strlen(sbuf) + 1;
cp = alloc(lengte);
if (cp)
strcpy((char *)cp, sbuf);
return cp;
}
else
return(NULL);
}
/*
* mch_setenv VMS version of setenv()
*/
int
mch_setenv(char *var, char *value, int x)
{
int res, dum;
long attrib = 0L;
char acmode = PSL$C_SUPER; // needs SYSNAM privilege
DESC tabnam, lognam;
ITMLST1 itmlst;
vul_desc(&tabnam, "LNM$JOB");
vul_desc(&lognam, var);
vul_item(&itmlst.equ, value ? strlen(value) : 0, value ? LNM$_STRING : 0,
value, &dum);
itmlst.nul = 0;
res = sys$crelnm(&attrib, &tabnam, &lognam, &acmode, &itmlst);
return((res == 1) ? 0 : -1);
}
int
vms_sys(char *cmd, char *out, char *inp)
{
DESC cdsc, odsc, idsc;
long status;
if (cmd)
vul_desc(&cdsc, cmd);
if (out)
vul_desc(&odsc, out);
if (inp)
vul_desc(&idsc, inp);
lib$spawn(cmd ? &cdsc : NULL, // command string
inp ? &idsc : NULL, // input file
out ? &odsc : NULL, // output file
0, 0, 0, &status, 0, 0, 0, 0, 0, 0);
return status;
}
/*
* Convert string to lowercase - most often filename
*/
char *
vms_tolower( char *name )
{
int i,nlen = strlen(name);
for (i = 0; i < nlen; i++)
name[i] = TOLOWER_ASC(name[i]);
return name;
}
/*
* Convert VMS system() or lib$spawn() return code to Unix-like exit value.
*/
int
vms_sys_status(int status)
{
if (status != SS$_NORMAL && (status & STS$M_SUCCESS) == 0)
return status; // Command failed.
return 0;
}
/*
* vms_read()
* function for low level char input
*
* Returns: input length
*/
int
vms_read(char *inbuf, size_t nbytes)
{
int status, function, len;
TT_MODE tt_mode;
ITEM itmlst[2]; // terminates on everything
static long trm_mask[8] = {-1, -1, -1, -1, -1, -1, -1, -1};
// whatever happened earlier we need an iochan here
if (!iochan)
tt_mode = get_tty();
// important: clean the inbuf
memset(inbuf, 0, nbytes);
// set up the itemlist for the first read
vul_item(&itmlst[0], 0, TRM$_MODIFIERS,
(char *)( TRM$M_TM_NOECHO | TRM$M_TM_NOEDIT |
TRM$M_TM_NOFILTR | TRM$M_TM_TRMNOECHO |
TRM$M_TM_NORECALL) , 0);
vul_item(&itmlst[1], sizeof(trm_mask), TRM$_TERM, (char *)&trm_mask, 0);
// wait forever for a char
function = (IO$_READLBLK | IO$M_EXTEND);
status = sys$qiow(0, iochan, function, &iosb, 0, 0,
inbuf, nbytes-1, 0, 0, &itmlst, sizeof(itmlst));
len = strlen(inbuf); // how many chars we got?
// read immediately the rest in the IO queue
function = (IO$_READLBLK | IO$M_TIMED | IO$M_ESCAPE | IO$M_NOECHO | IO$M_NOFILTR);
status = sys$qiow(0, iochan, function, &iosb, 0, 0,
inbuf+len, nbytes-1-len, 0, 0, 0, 0);
len = strlen(inbuf); // return the total length
return len;
}
/*
* vms_wproc() is called for each matching filename by decc$to_vms().
* We want to save each match for later retrieval.
*
* Returns: 1 - continue finding matches
* 0 - stop trying to find any further matches
*/
static int
vms_wproc(char *name, int val)
{
int i;
static int vms_match_alloced = 0;
if (val == DECC$K_FOREIGN ) // foreign non VMS files are not counting
return 1;
// accept all DECC$K_FILE and DECC$K_DIRECTORY
if (vms_match_num == 0)
{
// first time through, setup some things
if (NULL == vms_fmatch)
{
vms_fmatch = ALLOC_MULT(char_u *, EXPL_ALLOC_INC);
if (!vms_fmatch)
return 0;
vms_match_alloced = EXPL_ALLOC_INC;
vms_match_free = EXPL_ALLOC_INC;
}
else
{
// re-use existing space
vms_match_free = vms_match_alloced;
}
}
// make matches look uniform
vms_remove_version(name);
name=vms_tolower(name);
// if name already exists, don't add it
for (i = 0; i<vms_match_num; i++)
{
if (0 == STRCMP((char_u *)name,vms_fmatch[i]))
return 1;
}
if (--vms_match_free == 0)
{
char_u **old_vms_fmatch = vms_fmatch;
// add more space to store matches
vms_match_alloced += EXPL_ALLOC_INC;
vms_fmatch = vim_realloc(old_vms_fmatch,
sizeof(char **) * vms_match_alloced);
if (!vms_fmatch)
{
vim_free(old_vms_fmatch);
return 0;
}
vms_match_free = EXPL_ALLOC_INC;
}
vms_fmatch[vms_match_num] = vim_strsave((char_u *)name);
++vms_match_num;
return 1;
}
/*
* mch_expand_wildcards this code does wild-card pattern
* matching NOT using the shell
*
* return OK for success, FAIL for error (you may lose some
* memory) and put an error message in *file.
*
* num_pat number of input patterns
* pat array of pointers to input patterns
* num_file pointer to number of matched file names
* file pointer to array of pointers to matched file names
*
*/
int
mch_expand_wildcards(int num_pat, char_u **pat, int *num_file, char_u ***file, int flags)
{
int i, cnt = 0;
char_u buf[MAXPATHL];
char *result;
int dir;
int files_alloced, files_free;
*num_file = 0; // default: no files found
files_alloced = EXPL_ALLOC_INC;
files_free = EXPL_ALLOC_INC;
*file = ALLOC_MULT(char_u *, files_alloced);
if (*file == NULL)
{
*num_file = 0;
return FAIL;
}
for (i = 0; i < num_pat; i++)
{
// expand environment var or home dir
if (vim_strchr(pat[i],'$') || vim_strchr(pat[i],'~'))
expand_env(pat[i],buf,MAXPATHL);
else
STRCPY(buf,pat[i]);
vms_match_num = 0; // reset collection counter
result = decc$translate_vms(vms_fixfilename(buf));
if ( (int) result == 0 || (int) result == -1 )
{
cnt = 0;
}
else
{
cnt = decc$to_vms(result, vms_wproc, 1 /*allow wild*/ , (flags & EW_DIR ? 0:1 ) /*allow directory*/) ;
}
if (cnt > 0)
cnt = vms_match_num;
if (cnt < 1)
continue;
for (i = 0; i < cnt; i++)
{
// files should exist if expanding interactively
if (!(flags & EW_NOTFOUND) && mch_getperm(vms_fmatch[i]) < 0)
continue;
// do not include directories
dir = (mch_isdir(vms_fmatch[i]));
if (( dir && !(flags & EW_DIR)) || (!dir && !(flags & EW_FILE)))
continue;
// Skip files that are not executable if we check for that.
if (!dir && (flags & EW_EXEC)
&& !mch_can_exe(vms_fmatch[i], NULL, !(flags & EW_SHELLCMD)))
continue;
// allocate memory for pointers
if (--files_free < 1)
{
char_u **old_file = *file;
files_alloced += EXPL_ALLOC_INC;
*file = vim_realloc(old_file, sizeof(char_u **) * files_alloced);
if (*file == NULL)
{
vim_free(old_file);
*file = (char_u **)"";
*num_file = 0;
return(FAIL);
}
files_free = EXPL_ALLOC_INC;
}
(*file)[*num_file++] = vms_fmatch[i];
}
}
return OK;
}
int
mch_expandpath(garray_T *gap, char_u *path, int flags)
{
int i,cnt = 0;
char *result;
vms_match_num = 0;
// the result from the decc$translate_vms needs to be handled
// otherwise it might create ACCVIO error in decc$to_vms
result = decc$translate_vms(vms_fixfilename(path));
if ( (int) result == 0 || (int) result == -1 )
{
cnt = 0;
}
else
{
cnt = decc$to_vms(result, vms_wproc, 1 /*allow_wild*/, (flags & EW_DIR ? 0:1 ) /*allow directory*/);
}
if (cnt > 0)
cnt = vms_match_num;
for (i = 0; i < cnt; i++)
{
if (mch_getperm(vms_fmatch[i]) >= 0) // add existing file
addfile(gap, vms_fmatch[i], flags);
}
return cnt;
}
/*
* attempt to translate a mixed unix-vms file specification to pure vms
*/
static void
vms_unix_mixed_filespec(char *in, char *out)
{
char *lastcolon;
char *end_of_dir;
char ch;
int len;
char *out_str=out;
// copy vms filename portion up to last colon
// (node and/or disk)
lastcolon = strrchr(in, ':'); // find last colon
if (lastcolon != NULL)
{
len = lastcolon - in + 1;
strncpy(out, in, len);
out += len;
in += len;
}
end_of_dir = NULL; // default: no directory
// start of directory portion
ch = *in;
if ((ch == '[') || (ch == '/') || (ch == '<')) // start of directory(s) ?
{
ch = '[';
SKIP_FOLLOWING_SLASHES(in);
}
else if (EQN(in, "../", 3)) // Unix parent directory?
{
*out++ = '[';
*out++ = '-';
end_of_dir = out;
ch = '.';
in += 2;
SKIP_FOLLOWING_SLASHES(in);
}
else
{ // not a special character
while (EQN(in, "./", 2)) // Ignore Unix "current dir"
{
in += 2;
SKIP_FOLLOWING_SLASHES(in);
}
if (strchr(in, '/') == NULL) // any more Unix directories ?
{
strcpy(out, in); // No - get rest of the spec
return;
}
else
{
*out++ = '['; // Yes, denote a Vms subdirectory
ch = '.';
--in;
}
}
// if we get here, there is a directory part of the filename
// initialize output file spec
*out++ = ch;
++in;
while (*in != '\0')
{
ch = *in;
if ((ch == ']') || (ch == '/') || (ch == '>') ) // end of (sub)directory ?
{
end_of_dir = out;
ch = '.';
SKIP_FOLLOWING_SLASHES(in);
}
else if (EQN(in, "../", 3)) // Unix parent directory?
{
*out++ = '-';
end_of_dir = out;
ch = '.';
in += 2;
SKIP_FOLLOWING_SLASHES(in);
}
else
{
while (EQN(in, "./", 2)) // Ignore Unix "current dir"
{
end_of_dir = out;
in += 2;
SKIP_FOLLOWING_SLASHES(in);
ch = *in;
}
}
// Place next character into output file spec
*out++ = ch;
++in;
}
*out = '\0'; // Terminate output file spec
if (end_of_dir != NULL) // Terminate directory portion
*end_of_dir = ']';
}
/*
* for decc$to_vms in vms_fixfilename
*/
static int
vms_fspec_proc(char *fil, int val)
{
strcpy(Fspec_Rms,fil);
return(1);
}
/*
* change unix and mixed filenames to VMS
*/
void *
vms_fixfilename(void *instring)
{
static char *buf = NULL;
static size_t buflen = 0;
size_t len;
// get a big-enough buffer
len = strlen(instring) + 1;
if (len > buflen)
{
buflen = len + 128;
buf = vim_realloc(buf, buflen * sizeof(char));
}
#ifdef DEBUG
char *tmpbuf = NULL;
tmpbuf = ALLOC_MULT(char, buflen);
strcpy(tmpbuf, instring);
#endif
Fspec_Rms = buf; // for decc$to_vms
if (strchr(instring,'/') == NULL)
// It is already a VMS file spec
strcpy(buf, instring);
else if (strchr(instring,'"') == NULL) // password in the path?
{
// Seems it is a regular file, let guess that it is pure Unix fspec
if ( (strchr(instring,'[') == NULL) && (strchr(instring,'<') == NULL) &&
(strchr(instring,']') == NULL) && (strchr(instring,'>') == NULL) &&
(strchr(instring,':') == NULL) )
{
// It must be a truly unix fspec
decc$to_vms(instring, vms_fspec_proc, 0, 0);
}
else
{
// It is a mixed fspec
vms_unix_mixed_filespec(instring, buf);
}
}
else
// we have a password in the path
// decc$ functions can not handle
// this is our only hope to resolv
vms_unix_mixed_filespec(instring, buf);
return buf;
}
/*
* Remove version number from file name
* we need it in some special cases as:
* creating swap file name and writing new file
*/
void
vms_remove_version(void * fname)
{
char_u *cp;
char_u *fp;
if ((cp = vim_strchr( fname, ';')) != NULL) // remove version
*cp = '\0';
else if ((cp = vim_strrchr( fname, '.')) != NULL )
{
if ((fp = vim_strrchr( fname, ']')) != NULL )
{;}
else if ((fp = vim_strrchr( fname, '>')) != NULL )
{;}
else
fp = fname;
while ( *fp != '\0' && fp < cp )
if ( *fp++ == '.' )
*cp = '\0';
}
return ;
}
struct typeahead_st {
unsigned short numchars;
unsigned char firstchar;
unsigned char reserved0;
unsigned long reserved1;
} typeahead;
/*
* Wait "msec" msec until a character is available from file descriptor "fd".
* "msec" == 0 will check for characters once.
* "msec" == -1 will block until a character is available.
*/
int
RealWaitForChar(
int fd UNUSED, // always read from iochan
long msec,
int *check_for_gpm UNUSED,
int *interrupted)
{
int status;
struct _generic_64 time_curr;
struct _generic_64 time_diff;
struct _generic_64 time_out;
unsigned int convert_operation = LIB$K_DELTA_SECONDS_F;
float sec =(float) msec/1000;
// make sure the iochan is set
if (!iochan)
get_tty();
if (sec > 0)
{
// time-out specified; convert it to absolute time
// sec>0 requirement of lib$cvtf_to_internal_time()
// get current time (number of 100ns ticks since the VMS Epoch)
status = sys$gettim(&time_curr);
if (status != SS$_NORMAL)
return 0; // error
// construct the delta time
#if __G_FLOAT==0
# ifndef VAX
// IEEE is default on IA64, but can be used on Alpha too - but not on VAX
status = lib$cvts_to_internal_time(
&convert_operation, &sec, &time_diff);
# endif
#else // default on Alpha and VAX
status = lib$cvtf_to_internal_time(
&convert_operation, &sec, &time_diff);
#endif
if (status != LIB$_NORMAL)
return 0; // error
// add them up
status = lib$add_times(
&time_curr,
&time_diff,
&time_out);
if (status != LIB$_NORMAL)
return 0; // error
}
while (TRUE)
{
// select()
status = sys$qiow(0, iochan, IO$_SENSEMODE | IO$M_TYPEAHDCNT, iosb,
0, 0, &typeahead, 8, 0, 0, 0, 0);
if (status != SS$_NORMAL || (iosb[0] & 0xFFFF) != SS$_NORMAL)
return 0; // error
if (typeahead.numchars)
return 1; // ready to read
// there's nothing to read; what now?
if (msec == 0)
{
// immediate time-out; return impatiently
return 0;
}
else if (msec < 0)
{
// no time-out; wait on indefinitely
return 1; // fakeout to force a wait in vms_read()
}
else
{
// time-out needs to be checked
status = sys$gettim(&time_curr);
if (status != SS$_NORMAL)
return 0; // error
status = lib$sub_times(
&time_out,
&time_curr,
&time_diff);
if (status != LIB$_NORMAL)
return 0; // error, incl. time_diff < 0 (i.e. time-out)
// otherwise wait some more
}
}
}
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