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vim/src/if_tcl.c
zeertzjq e99f068878
patch 9.1.0062: Internal error when :luado/perldo/pydo etc delete lines 
Problem:  Internal error when :luado/perldo/pydo etc delete lines
Solution: Test that the line is still valid line number
          (zeertzjq)

closes: #13931

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
2024-01-29 19:32:39 +01:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* 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.
*/
/*
* Tcl extensions by Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>
* Last modification: Wed May 10 21:28:44 CEST 2000
* Requires Tcl 8.0 or higher.
*
* Variables:
* ::vim::current(buffer) # Name of buffer command for current buffer.
* ::vim::current(window) # Name of window command for current window.
* ::vim::range(start) # Start of current range (line number).
* ::vim::range(end) # End of current range (line number).
* ::vim::lbase # Start of line/column numbers (1 or 0).
*
* Commands:
* ::vim::command {cmd} # Execute ex command {cmd}.
* ::vim::option {opt} [val] # Get/Set option {opt}.
* ::vim::expr {expr} # Evaluate {expr} using vim's evaluator.
* ::vim::beep # Guess.
*
* set buf [::vim::buffer {n}] # Create Tcl command for buffer N.
* set bl [::vim::buffer list] # Get list of Tcl commands of all buffers.
* ::vim::buffer exists {n} # True if buffer {n} exists.
*
* set wl [::vim::window list] # Get list of Tcl commands of all windows.
*
* set n [$win height] # Report window height.
* $win height {n} # Set window height to {n}.
* array set pos [$win cursor] # Get cursor position.
* $win cursor {row} {col} # Set cursor position.
* $win cursor pos # Set cursor position from array var "pos"
* $win delcmd {cmd} # Register callback command for closed window.
* $win option {opt} [val] # Get/Set vim option in context of $win.
* $win command {cmd} # Execute ex command in context of $win.
* $win expr {expr} # Evaluate vim expression in context of $win.
* set buf [$win buffer] # Create Tcl command for window's buffer.
*
* $buf name # Reports file name in buffer.
* $buf number # Reports buffer number.
* set l [$buf get {n}] # Get buffer line {n} as a string.
* set L [$buf get {n} {m}] # Get lines {n} through {m} as a list.
* $buf count # Reports number of lines in buffer.
* $buf last # Reports number of last line in buffer.
* $buf delete {n} # Delete line {n}.
* $buf delete {n} {m} # Delete lines {n} through {m}.
* $buf set {n} {l} # Set line {n} to string {l}.
* $buf set {n} {m} {L} # Set lines {n} through {m} from list {L}.
* # Delete/inserts lines as appropriate.
* $buf option {opt} [val] # Get/Set vim option in context of $buf.
* $buf command {cmd} # Execute ex command in context of $buf
* $buf expr {cmd} # Evaluate vim expression in context of $buf.
* array set pos [$buf mark {m}] # Get position of mark.
* $buf append {n} {str} # Append string {str} to buffer,after line {n}.
* $buf insert {n} {str} # Insert string {str} in buffer as line {n}.
* $buf delcmd {cmd} # Register callback command for deleted buffer.
* set wl [$buf windows] # Get list of Tcl commands for all windows of
* # this buffer.
TODO:
* ::vim::buffer new # create new buffer + Tcl command
*/
#include "vim.h"
#undef EXTERN // tcl.h defines it too
#ifdef DYNAMIC_TCL
# define USE_TCL_STUBS // use tcl's stubs mechanism
#endif
#include <tcl.h>
#include <string.h>
typedef struct
{
Tcl_Interp *interp;
int exitvalue;
int range_start, range_end;
int lbase;
char *curbuf, *curwin;
} tcl_info;
static tcl_info tclinfo = { NULL, 0, 0, 0, 0, NULL, NULL };
#define VAR_RANGE1 "::vim::range(start)"
#define VAR_RANGE2 "::vim::range(begin)"
#define VAR_RANGE3 "::vim::range(end)"
#define VAR_CURBUF "::vim::current(buffer)"
#define VAR_CURWIN "::vim::current(window)"
#define VAR_LBASE "::vim::lbase"
#define VAR_CURLINE "line"
#define VAR_CURLNUM "lnum"
#define VARNAME_SIZE 64
#define row2tcl(x) ((x) - (tclinfo.lbase==0))
#define row2vim(x) ((x) + (tclinfo.lbase==0))
#define col2tcl(x) ((x) + (tclinfo.lbase!=0))
#define col2vim(x) ((x) - (tclinfo.lbase!=0))
#define VIMOUT ((ClientData)1)
#define VIMERR ((ClientData)2)
// This appears to be new in Tcl 8.4.
#ifndef CONST84
# define CONST84
#endif
/*
* List of Tcl interpreters who reference a vim window or buffer.
* Each buffer and window has its own list in the w_tcl_ref or b_tcl_ref
* struct member. We need this because Tcl can create sub-interpreters with
* the "interp" command, and each interpreter can reference all windows and
* buffers.
*/
struct ref
{
struct ref *next;
Tcl_Interp *interp;
Tcl_Command cmd; // Tcl command that represents this object
Tcl_Obj *delcmd; // Tcl command to call when object is being del.
void *vimobj; // Vim window or buffer (win_T* or buf_T*)
};
static char * tclgetbuffer _ANSI_ARGS_((Tcl_Interp *interp, buf_T *buf));
static char * tclgetwindow _ANSI_ARGS_((Tcl_Interp *interp, win_T *win));
static int tclsetdelcmd _ANSI_ARGS_((Tcl_Interp *interp, struct ref *reflist, void *vimobj, Tcl_Obj *delcmd));
static int tclgetlinenum _ANSI_ARGS_ ((Tcl_Interp *interp, Tcl_Obj *obj, int *valueP, buf_T *buf));
static win_T *tclfindwin _ANSI_ARGS_ ((buf_T *buf));
static int tcldoexcommand _ANSI_ARGS_ ((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int objn));
static int tclsetoption _ANSI_ARGS_ ((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int objn));
static int tclvimexpr _ANSI_ARGS_ ((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int objn));
static void tcldelthisinterp _ANSI_ARGS_ ((void));
static int vimerror _ANSI_ARGS_((Tcl_Interp *interp));
static void tclmsg _ANSI_ARGS_((char *text));
static void tclerrmsg _ANSI_ARGS_((char *text));
static void tclupdatevars _ANSI_ARGS_((void));
static struct ref refsdeleted; // dummy object for deleted ref list
//////////////////////////////////////////////////////////////////////////////
// TCL interface manager
////////////////////////////////////////////////////////////////////////////
#if defined(DYNAMIC_TCL) || defined(PROTO)
# ifndef DYNAMIC_TCL_DLL
# define DYNAMIC_TCL_DLL "tcl83.dll"
# endif
# ifndef DYNAMIC_TCL_VER
# define DYNAMIC_TCL_VER "8.3"
# endif
# ifndef DYNAMIC_TCL // Just generating prototypes
typedef int HANDLE;
# endif
# ifdef MSWIN
# define TCL_PROC FARPROC
# define load_dll vimLoadLib
# define symbol_from_dll GetProcAddress
# define close_dll FreeLibrary
# define load_dll_error GetWin32Error
# else
# include <dlfcn.h>
# define HANDLE void*
# define TCL_PROC void*
# define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
# define symbol_from_dll dlsym
# define close_dll dlclose
# define load_dll_error dlerror
# endif
/*
* Declare HANDLE for tcl.dll and function pointers.
*/
static HANDLE hTclLib = NULL;
Tcl_Interp* (*dll_Tcl_CreateInterp)(void);
void (*dll_Tcl_FindExecutable)(const void *);
/*
* Table of name to function pointer of tcl.
*/
static struct {
char* name;
TCL_PROC* ptr;
} tcl_funcname_table[] = {
{"Tcl_CreateInterp", (TCL_PROC*)&dll_Tcl_CreateInterp},
{"Tcl_FindExecutable", (TCL_PROC*)&dll_Tcl_FindExecutable},
{NULL, NULL},
};
/*
* Make all runtime-links of tcl.
*
* 1. Get module handle using LoadLibraryEx.
* 2. Get pointer to tcl function by GetProcAddress.
* 3. Repeat 2, until get all functions will be used.
*
* Parameter 'libname' provides name of DLL.
* Return OK or FAIL.
*/
static int
tcl_runtime_link_init(char *libname, int verbose)
{
int i;
if (hTclLib)
return OK;
if (!(hTclLib = load_dll(libname)))
{
if (verbose)
semsg(_(e_could_not_load_library_str_str), libname, load_dll_error());
return FAIL;
}
for (i = 0; tcl_funcname_table[i].ptr; ++i)
{
if (!(*tcl_funcname_table[i].ptr = symbol_from_dll(hTclLib,
tcl_funcname_table[i].name)))
{
close_dll(hTclLib);
hTclLib = NULL;
if (verbose)
semsg(_(e_could_not_load_library_function_str),
tcl_funcname_table[i].name);
return FAIL;
}
}
return OK;
}
#endif // defined(DYNAMIC_TCL) || defined(PROTO)
#ifdef DYNAMIC_TCL
static char *find_executable_arg = NULL;
#endif
void
vim_tcl_init(char *arg)
{
#ifdef DYNAMIC_TCL
find_executable_arg = arg;
#else
Tcl_FindExecutable(arg);
#endif
}
#if defined(DYNAMIC_TCL) || defined(PROTO)
static int stubs_initialized = FALSE;
/*
* Return TRUE if the TCL interface can be used.
*/
int
tcl_enabled(int verbose)
{
if (!stubs_initialized && find_executable_arg != NULL
&& tcl_runtime_link_init((char *)p_tcldll, verbose) == OK)
{
Tcl_Interp *interp;
// Note: the library will allocate memory to store the executable name,
// which will be reported as possibly leaked by valgrind.
dll_Tcl_FindExecutable(find_executable_arg);
if ((interp = dll_Tcl_CreateInterp()) != NULL)
{
if (Tcl_InitStubs(interp, DYNAMIC_TCL_VER, 0) != NULL)
{
Tcl_DeleteInterp(interp);
stubs_initialized = TRUE;
}
// FIXME: When Tcl_InitStubs() was failed, how delete interp?
}
}
return stubs_initialized;
}
#endif
#if defined(EXITFREE) || defined(PROTO)
/*
* Called once when exiting.
*/
void
vim_tcl_finalize(void)
{
# ifdef DYNAMIC_TCL
if (stubs_initialized)
# endif
Tcl_Finalize();
}
#endif
void
tcl_end(void)
{
}
/////////////////////////////////////////////////////////////////////////////
// Tcl commands
////////////////////////////////////////////////////////////////////////////
/*
* Replace standard "exit" command.
*
* Delete the Tcl interpreter; a new one will be created with the next
* :tcl command). The exit code is saved (and retrieved in tclexit()).
* Since Tcl's exit is never expected to return and this replacement
* does, then (except for a trivial case) additional Tcl commands will
* be run. Since the interpreter is now marked as deleted, an error
* will be returned -- typically "attempt to call eval in deleted
* interpreter". Hopefully, at this point, checks for TCL_ERROR take
* place and control percolates back up to Vim -- but with this new error
* string in the interpreter's result value. Therefore it would be
* useless for this routine to return the exit code via Tcl_SetResult().
*/
static int
exitcmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
int value = 0;
switch (objc)
{
case 2:
if (Tcl_GetIntFromObj(interp, objv[1], &value) != TCL_OK)
break;
// FALLTHROUGH
case 1:
tclinfo.exitvalue = value;
Tcl_DeleteInterp(interp);
break;
default:
Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?");
}
return TCL_ERROR;
}
/*
* "::vim::beep" - what Vi[m] does best :-)
*/
static int
beepcmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
if (objc != 1)
{
Tcl_WrongNumArgs(interp, 1, objv, NULL);
return TCL_ERROR;
}
vim_beep(BO_LANG);
return TCL_OK;
}
/*
* "::vim::buffer list" - create a list of buffer commands.
* "::vim::buffer {N}" - create buffer command for buffer N.
* "::vim::buffer exists {N}" - test if buffer N exists.
* "::vim::buffer new" - create a new buffer (not implemented)
*/
static int
buffercmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
char *name;
buf_T *buf;
Tcl_Obj *resobj;
int err, n, idx;
enum {BCMD_EXISTS, BCMD_LIST};
static CONST84 char *bcmdoptions[] =
{
"exists", "list", (char *)0
};
if (objc < 2)
{
Tcl_WrongNumArgs(interp, 1, objv, "option");
return TCL_ERROR;
}
err = Tcl_GetIntFromObj(interp, objv[1], &n);
if (err == TCL_OK)
{
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 1, objv, "bufNumber");
return TCL_ERROR;
}
FOR_ALL_BUFFERS(buf)
{
if (buf->b_fnum == n)
{
name = tclgetbuffer(interp, buf);
if (name == NULL)
return TCL_ERROR;
Tcl_SetResult(interp, name, TCL_VOLATILE);
return TCL_OK;
}
}
Tcl_SetResult(interp, _("invalid buffer number"), TCL_STATIC);
return TCL_ERROR;
}
Tcl_ResetResult(interp); // clear error from Tcl_GetIntFromObj
err = Tcl_GetIndexFromObj(interp, objv[1], bcmdoptions, "option", 0, &idx);
if (err != TCL_OK)
return err;
switch (idx)
{
case BCMD_LIST:
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, "");
err = TCL_ERROR;
break;
}
FOR_ALL_BUFFERS(buf)
{
name = tclgetbuffer(interp, buf);
if (name == NULL)
{
err = TCL_ERROR;
break;
}
Tcl_AppendElement(interp, name);
}
break;
case BCMD_EXISTS:
if (objc != 3)
{
Tcl_WrongNumArgs(interp, 2, objv, "bufNumber");
err = TCL_ERROR;
break;
}
err = Tcl_GetIntFromObj(interp, objv[2], &n);
if (err == TCL_OK)
{
buf = buflist_findnr(n);
resobj = Tcl_NewIntObj(buf != NULL);
Tcl_SetObjResult(interp, resobj);
}
break;
default:
Tcl_SetResult(interp, _("not implemented yet"), TCL_STATIC);
err = TCL_ERROR;
}
return err;
}
/*
* "::vim::window list" - create list of window commands.
*/
static int
windowcmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
char *what, *string;
win_T *win;
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 1, objv, "option");
return TCL_ERROR;
}
what = Tcl_GetStringFromObj(objv[1], NULL);
if (strcmp(what, "list") == 0)
{
FOR_ALL_WINDOWS(win)
{
string = tclgetwindow(interp, win);
if (string == NULL)
return TCL_ERROR;
Tcl_AppendElement(interp, string);
}
return TCL_OK;
}
Tcl_SetResult(interp, _("unknown option"), TCL_STATIC);
return TCL_ERROR;
}
/*
* flags for bufselfcmd and winselfcmd to indicate outstanding actions.
*/
#define FL_UPDATE_SCREEN (1<<0)
#define FL_UPDATE_CURBUF (1<<1)
#define FL_ADJUST_CURSOR (1<<2)
/*
* This function implements the buffer commands.
*/
static int
bufselfcmd(
ClientData ref,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
int opt, err, idx, flags;
int val1, val2, n, i;
buf_T *buf, *savebuf;
win_T *win, *savewin;
Tcl_Obj *resobj;
pos_T *pos;
char *line;
enum
{
BUF_APPEND, BUF_COMMAND, BUF_COUNT, BUF_DELCMD, BUF_DELETE, BUF_EXPR,
BUF_GET, BUF_INSERT, BUF_LAST, BUF_MARK, BUF_NAME, BUF_NUMBER,
BUF_OPTION, BUF_SET, BUF_WINDOWS
};
static CONST84 char *bufoptions[] =
{
"append", "command", "count", "delcmd", "delete", "expr",
"get", "insert", "last", "mark", "name", "number",
"option", "set", "windows", (char *)0
};
if (objc < 2)
{
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
err = Tcl_GetIndexFromObj(interp, objv[1], bufoptions, "option", 0, &idx);
if (err != TCL_OK)
return err;
buf = (buf_T *)((struct ref *)ref)->vimobj;
savebuf = curbuf; curbuf = buf;
savewin = curwin; curwin = tclfindwin(buf);
flags = 0;
opt = 0;
switch (idx)
{
case BUF_COMMAND:
err = tcldoexcommand(interp, objc, objv, 2);
flags |= FL_UPDATE_SCREEN;
break;
case BUF_OPTION:
err = tclsetoption(interp, objc, objv, 2);
flags |= FL_UPDATE_SCREEN;
break;
case BUF_EXPR:
err = tclvimexpr(interp, objc, objv, 2);
break;
case BUF_NAME:
/*
* Get filename of buffer.
*/
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, NULL);
err = TCL_ERROR;
break;
}
if (buf->b_ffname)
Tcl_SetResult(interp, (char *)buf->b_ffname, TCL_VOLATILE);
else
Tcl_SetResult(interp, "", TCL_STATIC);
break;
case BUF_LAST:
/*
* Get line number of last line.
*/
opt = 1;
// fallthrough
case BUF_COUNT:
/*
* Get number of lines in buffer.
*/
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, NULL);
err = TCL_ERROR;
break;
}
val1 = (int)buf->b_ml.ml_line_count;
if (opt)
val1 = row2tcl(val1);
resobj = Tcl_NewIntObj(val1);
Tcl_SetObjResult(interp, resobj);
break;
case BUF_NUMBER:
/*
* Get buffer's number.
*/
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, NULL);
err = TCL_ERROR;
break;
}
resobj = Tcl_NewIntObj((int)buf->b_fnum);
Tcl_SetObjResult(interp, resobj);
break;
case BUF_GET:
if (objc != 3 && objc != 4)
{
Tcl_WrongNumArgs(interp, 2, objv, "lineNumber ?lineNumber?");
err = TCL_ERROR;
break;
}
err = tclgetlinenum(interp, objv[2], &val1, buf);
if (err != TCL_OK)
break;
if (objc == 4)
{
err = tclgetlinenum(interp, objv[3], &val2, buf);
if (err != TCL_OK)
break;
if (val1 > val2)
{
n = val1; val1 = val2; val2 = n;
}
Tcl_ResetResult(interp);
for (n = val1; n <= val2 && err == TCL_OK; n++)
{
line = (char *)ml_get_buf(buf, (linenr_T)n, FALSE);
if (line)
Tcl_AppendElement(interp, line);
else
err = TCL_ERROR;
}
}
else
{ // objc == 3
line = (char *)ml_get_buf(buf, (linenr_T)val1, FALSE);
Tcl_SetResult(interp, line, TCL_VOLATILE);
}
break;
case BUF_SET:
if (objc != 4 && objc != 5)
{
Tcl_WrongNumArgs(interp, 3, objv, "lineNumber ?lineNumber? stringOrList");
err = TCL_ERROR;
break;
}
err = tclgetlinenum(interp, objv[2], &val1, buf);
if (err != TCL_OK)
return TCL_ERROR;
if (objc == 4)
{
/*
* Replace one line with a string.
* $buf set {n} {string}
*/
line = Tcl_GetStringFromObj(objv[3], NULL);
if (u_savesub((linenr_T)val1) != OK)
{
Tcl_SetResult(interp, _("cannot save undo information"), TCL_STATIC);
err = TCL_ERROR;
}
else
if (ml_replace((linenr_T)val1, (char_u *)line, TRUE) != OK)
{
Tcl_SetResult(interp, _("cannot replace line"), TCL_STATIC);
err = TCL_ERROR;
}
else
{
changed_bytes((linenr_T)val1, 0);
flags |= FL_UPDATE_CURBUF;
}
break;
}
else
{
/*
* Replace several lines with the elements of a Tcl list.
* $buf set {n} {m} {list}
* If the list contains more than {m}-{n}+1 elements, they
* are * inserted after line {m}. If the list contains fewer
* elements, * the lines from {n}+length({list}) through {m}
* are deleted.
*/
int lc;
Tcl_Obj **lv;
err = tclgetlinenum(interp, objv[3], &val2, buf);
if (err != TCL_OK)
break;
err = Tcl_ListObjGetElements(interp, objv[4], &lc, &lv);
if (err != TCL_OK)
break;
if (val1 > val2)
{
n = val1;
val1 = val2;
val2 = n;
}
n = val1;
if (u_save((linenr_T)(val1 - 1), (linenr_T)(val2 + 1)) != OK)
{
Tcl_SetResult(interp, _("cannot save undo information"),
TCL_STATIC);
err = TCL_ERROR;
break;
}
flags |= FL_UPDATE_CURBUF;
for (i = 0; i < lc && n <= val2; i++)
{
line = Tcl_GetStringFromObj(lv[i], NULL);
if (ml_replace((linenr_T)n, (char_u *)line, TRUE) != OK)
goto setListError;
++n;
}
if (i < lc)
{
// append lines
do
{
line = Tcl_GetStringFromObj(lv[i], NULL);
if (ml_append((linenr_T)(n - 1),
(char_u *)line, 0, FALSE) != OK)
goto setListError;
++n;
++i;
} while (i < lc);
}
else if (n <= val2)
{
// did not replace all lines, delete
i = n;
do
{
if (ml_delete((linenr_T)i) != OK)
goto setListError;
++n;
} while (n <= val2);
}
lc -= val2 - val1 + 1; // number of lines to be replaced
mark_adjust((linenr_T)val1, (linenr_T)val2, (long)MAXLNUM,
(long)lc);
changed_lines((linenr_T)val1, 0, (linenr_T)val2 + 1, (long)lc);
break;
setListError:
u_undo(1); // ???
Tcl_SetResult(interp, _("cannot set line(s)"), TCL_STATIC);
err = TCL_ERROR;
}
break;
case BUF_DELETE:
if (objc != 3 && objc != 4)
{
Tcl_WrongNumArgs(interp, 3, objv, "lineNumber ?lineNumber?");
err = TCL_ERROR;
break;
}
err = tclgetlinenum(interp, objv[2], &val1, buf);
if (err != TCL_OK)
break;
val2 = val1;
if (objc == 4)
{
err = tclgetlinenum(interp, objv[3], &val2, buf);
if (err != TCL_OK)
return err;
if (val1 > val2)
{
i = val1; val1 = val2; val2 = i;
}
}
n = val2 - val1 + 1;
if (u_savedel((linenr_T)val1, (long)n) != OK)
{
Tcl_SetResult(interp, _("cannot save undo information"),
TCL_STATIC);
err = TCL_ERROR;
break;
}
for (i = 0; i < n; i++)
{
ml_delete((linenr_T)val1);
err = vimerror(interp);
if (err != TCL_OK)
break;
}
if (i > 0)
deleted_lines_mark((linenr_T)val1, (long)i);
flags |= FL_ADJUST_CURSOR|FL_UPDATE_SCREEN;
break;
case BUF_MARK:
if (objc != 3)
{
Tcl_WrongNumArgs(interp, 2, objv, "markName");
err = TCL_ERROR;
break;
}
line = Tcl_GetStringFromObj(objv[2], NULL);
pos = NULL;
if (line[0] != '\0' && line[1] == '\0')
pos = getmark(line[0], FALSE);
if (pos == NULL)
{
Tcl_SetResult(interp, _("invalid mark name"), TCL_STATIC);
err = TCL_ERROR;
break;
}
err = vimerror(interp);
if (err != TCL_OK)
break;
if (pos->lnum <= 0)
{
Tcl_SetResult(interp, _("mark not set"), TCL_STATIC);
err = TCL_ERROR;
}
else
{
char rbuf[64];
sprintf(rbuf, _("row %d column %d"),
(int)row2tcl(pos->lnum), (int)col2tcl(pos->col));
Tcl_SetResult(interp, rbuf, TCL_VOLATILE);
}
break;
case BUF_INSERT:
opt = 1;
// fallthrough
case BUF_APPEND:
if (objc != 4)
{
Tcl_WrongNumArgs(interp, 2, objv, "lineNum text");
err = TCL_ERROR;
break;
}
err = tclgetlinenum(interp, objv[2], &val1, buf);
if (err != TCL_OK)
break;
if (opt)
--val1;
if (u_save((linenr_T)val1, (linenr_T)(val1+1)) != OK)
{
Tcl_SetResult(interp, _("cannot save undo information"),
TCL_STATIC);
err = TCL_ERROR;
break;
}
line = Tcl_GetStringFromObj(objv[3], NULL);
if (ml_append((linenr_T)val1, (char_u *)line, 0, FALSE) != OK)
{
Tcl_SetResult(interp, _("cannot insert/append line"),
TCL_STATIC);
err = TCL_ERROR;
break;
}
appended_lines_mark((linenr_T)val1, 1L);
flags |= FL_UPDATE_SCREEN;
break;
case BUF_WINDOWS:
/*
* Return list of window commands.
*/
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, NULL);
err = TCL_ERROR;
break;
}
Tcl_ResetResult(interp);
FOR_ALL_WINDOWS(win)
{
if (win->w_buffer == buf)
{
line = tclgetwindow(interp, win);
if (line != NULL)
Tcl_AppendElement(interp, line);
else
{
err = TCL_ERROR;
break;
}
}
}
break;
case BUF_DELCMD:
/*
* Register deletion callback.
* TODO: Should be able to register multiple callbacks
*/
if (objc != 3)
{
Tcl_WrongNumArgs(interp, 2, objv, "command");
err = TCL_ERROR;
break;
}
err = tclsetdelcmd(interp, buf->b_tcl_ref, (void *)buf, objv[2]);
break;
default:
Tcl_SetResult(interp, _("not implemented yet"), TCL_STATIC);
err = TCL_ERROR;
}
if (flags & FL_UPDATE_CURBUF)
redraw_curbuf_later(UPD_NOT_VALID);
curbuf = savebuf;
curwin = savewin;
if (flags & FL_ADJUST_CURSOR)
check_cursor();
if (flags & (FL_UPDATE_SCREEN | FL_UPDATE_CURBUF))
update_screen(UPD_NOT_VALID);
return err;
}
/*
* This function implements the window commands.
*/
static int
winselfcmd(
ClientData ref,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
int err, idx, flags;
int val1, val2;
Tcl_Obj *resobj;
win_T *savewin, *win;
buf_T *savebuf;
char *str;
enum
{
WIN_BUFFER, WIN_COMMAND, WIN_CURSOR, WIN_DELCMD, WIN_EXPR,
WIN_HEIGHT, WIN_OPTION
};
static CONST84 char *winoptions[] =
{
"buffer", "command", "cursor", "delcmd", "expr",
"height", "option", (char *)0
};
if (objc < 2)
{
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
err = Tcl_GetIndexFromObj(interp, objv[1], winoptions, "option", 0, &idx);
if (err != TCL_OK)
return TCL_ERROR;
win = (win_T *)((struct ref *)ref)->vimobj;
savewin = curwin; curwin = win;
savebuf = curbuf; curbuf = win->w_buffer;
flags = 0;
switch (idx)
{
case WIN_OPTION:
err = tclsetoption(interp, objc, objv, 2);
flags |= FL_UPDATE_SCREEN;
break;
case WIN_COMMAND:
err = tcldoexcommand(interp, objc, objv, 2);
flags |= FL_UPDATE_SCREEN;
break;
case WIN_EXPR:
err = tclvimexpr(interp, objc, objv, 2);
break;
case WIN_HEIGHT:
if (objc == 3)
{
err = Tcl_GetIntFromObj(interp, objv[2], &val1);
if (err != TCL_OK)
break;
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
win_setheight(val1);
err = vimerror(interp);
if (err != TCL_OK)
break;
}
else
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, "?value?");
err = TCL_ERROR;
break;
}
resobj = Tcl_NewIntObj((int)(win->w_height));
Tcl_SetObjResult(interp, resobj);
break;
case WIN_BUFFER:
if (objc != 2)
{
Tcl_WrongNumArgs(interp, 2, objv, NULL);
err = TCL_ERROR;
break;
}
str = tclgetbuffer(interp, win->w_buffer);
if (str)
Tcl_SetResult(interp, str, TCL_VOLATILE);
else
err = TCL_ERROR;
break;
case WIN_DELCMD:
if (objc != 3)
{
Tcl_WrongNumArgs(interp, 2, objv, "command");
err = TCL_ERROR;
break;
}
err = tclsetdelcmd(interp, win->w_tcl_ref, (void *)win, objv[2]);
break;
case WIN_CURSOR:
if (objc > 4)
{
Tcl_WrongNumArgs(interp, 2, objv, "?arg1 ?arg2??");
err = TCL_ERROR;
break;
}
if (objc == 2)
{
char buf[64];
sprintf(buf, _("row %d column %d"), (int)row2tcl(win->w_cursor.lnum), (int)col2tcl(win->w_cursor.col));
Tcl_SetResult(interp, buf, TCL_VOLATILE);
break;
}
else if (objc == 3)
{
Tcl_Obj *part, *var;
part = Tcl_NewStringObj("row", -1);
var = Tcl_ObjGetVar2(interp, objv[2], part, TCL_LEAVE_ERR_MSG);
if (var == NULL)
{
err = TCL_ERROR;
break;
}
err = tclgetlinenum(interp, var, &val1, win->w_buffer);
if (err != TCL_OK)
break;
part = Tcl_NewStringObj("column", -1);
var = Tcl_ObjGetVar2(interp, objv[2], part, TCL_LEAVE_ERR_MSG);
if (var == NULL)
{
err = TCL_ERROR;
break;
}
err = Tcl_GetIntFromObj(interp, var, &val2);
if (err != TCL_OK)
break;
}
else
{ // objc == 4
err = tclgetlinenum(interp, objv[2], &val1, win->w_buffer);
if (err != TCL_OK)
break;
err = Tcl_GetIntFromObj(interp, objv[3], &val2);
if (err != TCL_OK)
break;
}
// TODO: should check column
win->w_cursor.lnum = val1;
win->w_cursor.col = col2vim(val2);
win->w_set_curswant = TRUE;
flags |= FL_UPDATE_SCREEN;
break;
default:
Tcl_SetResult(interp, _("not implemented yet"), TCL_STATIC);
break;
}
curwin = savewin;
curbuf = savebuf;
if (flags & FL_UPDATE_SCREEN)
update_screen(UPD_NOT_VALID);
return err;
}
static int
commandcmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
int err;
err = tcldoexcommand(interp, objc, objv, 1);
update_screen(UPD_VALID);
return err;
}
static int
optioncmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
int err;
err = tclsetoption(interp, objc, objv, 1);
update_screen(UPD_VALID);
return err;
}
static int
exprcmd(
ClientData dummy UNUSED,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[])
{
return tclvimexpr(interp, objc, objv, 1);
}
/////////////////////////////////////////////////////////////////////////////
// Support functions for Tcl commands
////////////////////////////////////////////////////////////////////////////
/*
* Get a line number from 'obj' and convert it to vim's range.
*/
static int
tclgetlinenum(
Tcl_Interp *interp,
Tcl_Obj *obj,
int *valueP,
buf_T *buf)
{
int err, i;
enum { LN_BEGIN, LN_BOTTOM, LN_END, LN_FIRST, LN_LAST, LN_START, LN_TOP };
static CONST84 char *keyw[] =
{
"begin", "bottom", "end", "first", "last", "start", "top", (char *)0
};
err = Tcl_GetIndexFromObj(interp, obj, keyw, "", 0, &i);
if (err == TCL_OK)
{
switch (i)
{
case LN_BEGIN:
case LN_FIRST:
case LN_START:
case LN_TOP:
*valueP = 1;
break;
case LN_BOTTOM:
case LN_END:
case LN_LAST:
*valueP = buf->b_ml.ml_line_count;
break;
}
return TCL_OK;
}
Tcl_ResetResult(interp);
err = Tcl_GetIntFromObj(interp, obj, &i);
if (err != TCL_OK)
return err;
i = row2vim(i);
if (i < 1 || i > buf->b_ml.ml_line_count)
{
Tcl_SetResult(interp, _("line number out of range"), TCL_STATIC);
return TCL_ERROR;
}
*valueP = i;
return TCL_OK;
}
/*
* Find the first window in the window list that displays the buffer.
*/
static win_T *
tclfindwin(buf_T *buf)
{
win_T *win;
FOR_ALL_WINDOWS(win)
{
if (win->w_buffer == buf)
return win;
}
return curwin; // keep current window context
}
/*
* Do-it-all function for "::vim::command", "$buf command" and "$win command".
*/
static int
tcldoexcommand(
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[],
int objn)
{
tcl_info saveinfo;
int err, flag, nobjs;
char *arg;
nobjs = objc - objn;
if (nobjs < 1 || nobjs > 2)
{
Tcl_WrongNumArgs(interp, objn, objv, "?-quiet? exCommand");
return TCL_ERROR;
}
flag = 0;
if (nobjs == 2)
{
arg = Tcl_GetStringFromObj(objv[objn], NULL);
if (strcmp(arg, "-quiet") == 0)
flag = 1;
else
{
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, _("unknown flag: "), arg, (char *)0);
return TCL_ERROR;
}
++objn;
}
memcpy(&saveinfo, &tclinfo, sizeof(tcl_info));
tclinfo.interp = NULL;
tclinfo.curwin = NULL;
tclinfo.curbuf = NULL;
arg = Tcl_GetStringFromObj(objv[objn], NULL);
if (flag)
++emsg_off;
do_cmdline_cmd((char_u *)arg);
if (flag)
--emsg_off;
err = vimerror(interp);
// If the ex command created a new Tcl interpreter, remove it
if (tclinfo.interp)
tcldelthisinterp();
memcpy(&tclinfo, &saveinfo, sizeof(tcl_info));
tclupdatevars();
return err;
}
/*
* Do-it-all function for "::vim::option", "$buf option" and "$win option".
*/
static int
tclsetoption(
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[],
int objn)
{
int err, nobjs, idx;
char_u *option;
getoption_T gov;
long lval;
char_u *sval;
Tcl_Obj *resobj;
enum { OPT_OFF, OPT_ON, OPT_TOGGLE };
static CONST84 char *optkw[] = { "off", "on", "toggle", (char *)0 };
nobjs = objc - objn;
if (nobjs != 1 && nobjs != 2)
{
Tcl_WrongNumArgs(interp, objn, objv, "vimOption ?value?");
return TCL_ERROR;
}
option = (char_u *)Tcl_GetStringFromObj(objv[objn], NULL);
++objn;
gov = get_option_value(option, &lval, &sval, NULL, 0);
err = TCL_OK;
switch (gov)
{
case gov_string:
Tcl_SetResult(interp, (char *)sval, TCL_VOLATILE);
vim_free(sval);
break;
case gov_bool:
case gov_number:
resobj = Tcl_NewLongObj(lval);
Tcl_SetObjResult(interp, resobj);
break;
default:
Tcl_SetResult(interp, _("unknown vimOption"), TCL_STATIC);
return TCL_ERROR;
}
if (nobjs == 2)
{
if (gov != gov_string)
{
sval = NULL; // avoid compiler warning
err = Tcl_GetIndexFromObj(interp, objv[objn], optkw, "", 0, &idx);
if (err != TCL_OK)
{
Tcl_ResetResult(interp);
err = Tcl_GetLongFromObj(interp, objv[objn], &lval);
}
else
{
switch (idx)
{
case OPT_ON:
lval = 1;
break;
case OPT_OFF:
lval = 0;
break;
case OPT_TOGGLE:
lval = !lval;
break;
}
}
}
else
sval = (char_u *)Tcl_GetStringFromObj(objv[objn], NULL);
if (err == TCL_OK)
{
set_option_value_give_err(option, lval, sval, OPT_LOCAL);
err = vimerror(interp);
}
}
return err;
}
/*
* Do-it-all function for "::vim::expr", "$buf expr" and "$win expr".
*/
static int
tclvimexpr(
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[],
int objn)
{
#ifdef FEAT_EVAL
char *expr, *str;
#endif
int err;
if (objc - objn != 1)
{
Tcl_WrongNumArgs(interp, objn, objv, "vimExpr");
return TCL_ERROR;
}
#ifdef FEAT_EVAL
expr = Tcl_GetStringFromObj(objv[objn], NULL);
str = (char *)eval_to_string((char_u *)expr, TRUE, FALSE);
if (str == NULL)
Tcl_SetResult(interp, _("invalid expression"), TCL_STATIC);
else
{
Tcl_SetResult(interp, str, TCL_VOLATILE);
vim_free(str);
}
err = vimerror(interp);
#else
Tcl_SetResult(interp, _("expressions disabled at compile time"), TCL_STATIC);
err = TCL_ERROR;
#endif
return err;
}
/*
* Check for internal vim errors.
*/
static int
vimerror(Tcl_Interp *interp)
{
if (got_int)
{
Tcl_SetResult(interp, _("keyboard interrupt"), TCL_STATIC);
return TCL_ERROR;
}
else if (did_emsg)
{
Tcl_SetResult(interp, _("Vim error"), TCL_STATIC);
return TCL_ERROR;
}
return TCL_OK;
}
/*
* Functions that handle the reference lists:
* delref() - callback for Tcl's DeleteCommand
* tclgetref() - find/create Tcl command for a win_T* or buf_T* object
* tclgetwindow() - window frontend for tclgetref()
* tclgetbuffer() - buffer frontend for tclgetref()
* tclsetdelcmd() - add Tcl callback command to a vim object
*/
static void
delref(ClientData cref)
{
struct ref *ref = (struct ref *)cref;
if (ref->delcmd)
{
Tcl_DecrRefCount(ref->delcmd);
ref->delcmd = NULL;
}
ref->interp = NULL;
}
static char *
tclgetref(
Tcl_Interp *interp,
void **refstartP, // ptr to w_tcl_ref/b_tcl-ref member of
// win_T/buf_T struct
char *prefix, // "win" or "buf"
void *vimobj, // win_T* or buf_T*
Tcl_ObjCmdProc *proc) // winselfcmd or bufselfcmd
{
struct ref *ref, *unused = NULL;
static char name[VARNAME_SIZE];
Tcl_Command cmd;
ref = (struct ref *)(*refstartP);
if (ref == &refsdeleted)
{
Tcl_SetResult(interp, _("cannot create buffer/window command: object is being deleted"), TCL_STATIC);
return NULL;
}
while (ref != NULL)
{
if (ref->interp == interp)
break;
if (ref->interp == NULL)
unused = ref;
ref = ref->next;
}
if (ref)
vim_snprintf(name, sizeof(name), "::vim::%s",
Tcl_GetCommandName(interp, ref->cmd));
else
{
if (unused)
ref = unused;
else
{
ref = (struct ref *)Tcl_Alloc(sizeof(struct ref));
ref->interp = NULL;
ref->next = (struct ref *)(*refstartP);
(*refstartP) = (void *)ref;
}
// This might break on some exotic systems...
vim_snprintf(name, sizeof(name), "::vim::%s_%lx",
prefix, (unsigned long)vimobj);
cmd = Tcl_CreateObjCommand(interp, name, proc,
(ClientData)ref, (Tcl_CmdDeleteProc *)delref);
if (!cmd)
return NULL;
ref->interp = interp;
ref->cmd = cmd;
ref->delcmd = NULL;
ref->vimobj = vimobj;
}
return name;
}
static char *
tclgetwindow(Tcl_Interp *interp, win_T *win)
{
return tclgetref(interp, &(win->w_tcl_ref), "win", (void *)win, winselfcmd);
}
static char *
tclgetbuffer(Tcl_Interp *interp, buf_T *buf)
{
return tclgetref(interp, &(buf->b_tcl_ref), "buf", (void *)buf, bufselfcmd);
}
static int
tclsetdelcmd(
Tcl_Interp *interp,
struct ref *reflist,
void *vimobj,
Tcl_Obj *delcmd)
{
if (reflist == &refsdeleted)
{
Tcl_SetResult(interp, _("cannot register callback command: buffer/window is already being deleted"), TCL_STATIC);
return TCL_ERROR;
}
while (reflist != NULL)
{
if (reflist->interp == interp && reflist->vimobj == vimobj)
{
if (reflist->delcmd)
Tcl_DecrRefCount(reflist->delcmd);
Tcl_IncrRefCount(delcmd);
reflist->delcmd = delcmd;
return TCL_OK;
}
reflist = reflist->next;
}
// This should never happen. Famous last word?
iemsg(e_tcl_fatal_error_reflist_corrupt_please_report_this);
Tcl_SetResult(interp, _("cannot register callback command: buffer/window reference not found"), TCL_STATIC);
return TCL_ERROR;
}
////////////////////////////////////////////
// I/O Channel
////////////////////////////////////////////
static int
tcl_channel_close(ClientData instance, Tcl_Interp *interp UNUSED)
{
int err = 0;
// currently does nothing
if (instance != VIMOUT && instance != VIMERR)
{
Tcl_SetErrno(EBADF);
err = EBADF;
}
return err;
}
static int
tcl_channel_input(
ClientData instance UNUSED,
char *buf UNUSED,
int bufsiz UNUSED,
int *errptr)
{
// input is currently not supported
Tcl_SetErrno(EINVAL);
if (errptr)
*errptr = EINVAL;
return -1;
}
static int
tcl_channel_output(
ClientData instance,
const char *buf,
int bufsiz,
int *errptr)
{
char_u *str;
int result;
// The buffer is not guaranteed to be 0-terminated, and we don't if
// there is enough room to add a '\0'. So we have to create a copy
// of the buffer...
str = vim_strnsave((char_u *)buf, bufsiz);
if (!str)
{
Tcl_SetErrno(ENOMEM);
if (errptr)
*errptr = ENOMEM;
return -1;
}
result = bufsiz;
if (instance == VIMOUT)
tclmsg((char *)str);
else
if (instance == VIMERR)
tclerrmsg((char *)str);
else
{
Tcl_SetErrno(EBADF);
if (errptr)
*errptr = EBADF;
result = -1;
}
vim_free(str);
return result;
}
static void
tcl_channel_watch(ClientData instance UNUSED, int mask UNUSED)
{
Tcl_SetErrno(EINVAL);
}
static int
tcl_channel_gethandle(
ClientData instance UNUSED,
int direction UNUSED,
ClientData *handleptr UNUSED)
{
Tcl_SetErrno(EINVAL);
return EINVAL;
}
static Tcl_ChannelType tcl_channel_type =
{
"vimmessage", // typeName
TCL_CHANNEL_VERSION_2, // version
tcl_channel_close, // closeProc
tcl_channel_input, // inputProc
tcl_channel_output, // outputProc
NULL, // seekProc
NULL, // setOptionProc
NULL, // getOptionProc
tcl_channel_watch, // watchProc
tcl_channel_gethandle, // getHandleProc
NULL, // close2Proc
NULL, // blockModeProc
#ifdef TCL_CHANNEL_VERSION_2
NULL, // flushProc
NULL, // handlerProc
#endif
// The following should not be necessary since TCL_CHANNEL_VERSION_2 was
// set above
#ifdef TCL_CHANNEL_VERSION_3
NULL, // wideSeekProc
#endif
#ifdef TCL_CHANNEL_VERSION_4
NULL, // threadActionProc
#endif
#ifdef TCL_CHANNEL_VERSION_5
NULL // truncateProc
#endif
};
///////////////////////////////////
// Interface to vim
//////////////////////////////////
static void
tclupdatevars(void)
{
char varname[VARNAME_SIZE]; // must be writeable
char *name;
strcpy(varname, VAR_RANGE1);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
strcpy(varname, VAR_RANGE2);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
strcpy(varname, VAR_RANGE3);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
strcpy(varname, VAR_LBASE);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
name = tclgetbuffer(tclinfo.interp, curbuf);
strcpy(tclinfo.curbuf, name);
strcpy(varname, VAR_CURBUF);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
name = tclgetwindow(tclinfo.interp, curwin);
strcpy(tclinfo.curwin, name);
strcpy(varname, VAR_CURWIN);
Tcl_UpdateLinkedVar(tclinfo.interp, varname);
}
static int
tclinit(exarg_T *eap)
{
char varname[VARNAME_SIZE]; // Tcl_LinkVar requires writeable varname
char *name;
#ifdef DYNAMIC_TCL
if (!tcl_enabled(TRUE))
{
emsg(_(e_sorry_this_command_is_disabled_tcl_library_could_not_be_loaded));
return FAIL;
}
#endif
if (!tclinfo.interp)
{
Tcl_Interp *interp;
static Tcl_Channel ch1, ch2;
// Create replacement channels for stdout and stderr; this has to be
// done each time an interpreter is created since the channels are closed
// when the interpreter is deleted
ch1 = Tcl_CreateChannel(&tcl_channel_type, "vimout", VIMOUT, TCL_WRITABLE);
ch2 = Tcl_CreateChannel(&tcl_channel_type, "vimerr", VIMERR, TCL_WRITABLE);
Tcl_SetStdChannel(ch1, TCL_STDOUT);
Tcl_SetStdChannel(ch2, TCL_STDERR);
interp = Tcl_CreateInterp();
Tcl_Preserve(interp);
if (Tcl_Init(interp) == TCL_ERROR)
{
Tcl_Release(interp);
Tcl_DeleteInterp(interp);
return FAIL;
}
#if 0
// VIM sure is interactive
Tcl_SetVar(interp, "tcl_interactive", "1", TCL_GLOBAL_ONLY);
#endif
Tcl_SetChannelOption(interp, ch1, "-buffering", "line");
#ifdef MSWIN
Tcl_SetChannelOption(interp, ch1, "-translation", "lf");
#endif
Tcl_SetChannelOption(interp, ch2, "-buffering", "line");
#ifdef MSWIN
Tcl_SetChannelOption(interp, ch2, "-translation", "lf");
#endif
// replace standard Tcl exit command
Tcl_DeleteCommand(interp, "exit");
Tcl_CreateObjCommand(interp, "exit", exitcmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
// new commands, in ::vim namespace
Tcl_CreateObjCommand(interp, "::vim::buffer", buffercmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
Tcl_CreateObjCommand(interp, "::vim::window", windowcmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
Tcl_CreateObjCommand(interp, "::vim::command", commandcmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
Tcl_CreateObjCommand(interp, "::vim::beep", beepcmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
Tcl_CreateObjCommand(interp, "::vim::option", optioncmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
Tcl_CreateObjCommand(interp, "::vim::expr", exprcmd,
(ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
// "lbase" variable
tclinfo.lbase = 1;
strcpy(varname, VAR_LBASE);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.lbase, TCL_LINK_INT);
// "range" variable
tclinfo.range_start = eap->line1;
strcpy(varname, VAR_RANGE1);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.range_start, TCL_LINK_INT|TCL_LINK_READ_ONLY);
strcpy(varname, VAR_RANGE2);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.range_start, TCL_LINK_INT|TCL_LINK_READ_ONLY);
tclinfo.range_end = eap->line2;
strcpy(varname, VAR_RANGE3);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.range_end, TCL_LINK_INT|TCL_LINK_READ_ONLY);
// "current" variable
tclinfo.curbuf = Tcl_Alloc(VARNAME_SIZE);
tclinfo.curwin = Tcl_Alloc(VARNAME_SIZE);
name = tclgetbuffer(interp, curbuf);
strcpy(tclinfo.curbuf, name);
strcpy(varname, VAR_CURBUF);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.curbuf, TCL_LINK_STRING|TCL_LINK_READ_ONLY);
name = tclgetwindow(interp, curwin);
strcpy(tclinfo.curwin, name);
strcpy(varname, VAR_CURWIN);
Tcl_LinkVar(interp, varname, (char *)&tclinfo.curwin, TCL_LINK_STRING|TCL_LINK_READ_ONLY);
tclinfo.interp = interp;
}
else
{
// Interpreter already exists, just update variables
tclinfo.range_start = row2tcl(eap->line1);
tclinfo.range_end = row2tcl(eap->line2);
tclupdatevars();
}
tclinfo.exitvalue = 0;
return OK;
}
static void
tclerrmsg(char *text)
{
char *next;
while ((next=strchr(text, '\n')))
{
*next++ = '\0';
emsg(text);
text = next;
}
if (*text)
emsg(text);
}
static void
tclmsg(char *text)
{
char *next;
while ((next=strchr(text, '\n')))
{
*next++ = '\0';
msg(text);
text = next;
}
if (*text)
msg(text);
}
static void
tcldelthisinterp(void)
{
if (!Tcl_InterpDeleted(tclinfo.interp))
Tcl_DeleteInterp(tclinfo.interp);
Tcl_Release(tclinfo.interp);
// The interpreter is now gets deleted. All registered commands (esp.
// window and buffer commands) are deleted, triggering their deletion
// callback, which deletes all refs pointing to this interpreter.
// We could garbage-collect the unused ref structs in all windows and
// buffers, but unless the user creates hundreds of sub-interpreters
// all referring to lots of windows and buffers, this is hardly worth
// the effort. Unused refs are recycled by other interpreters, and
// all refs are free'd when the window/buffer gets closed by vim.
tclinfo.interp = NULL;
Tcl_Free(tclinfo.curbuf);
Tcl_Free(tclinfo.curwin);
tclinfo.curbuf = tclinfo.curwin = NULL;
}
static int
tclexit(int error)
{
int newerr = OK;
if (Tcl_InterpDeleted(tclinfo.interp) // True if we intercepted Tcl's exit command
#if (TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION >= 5) || TCL_MAJOR_VERSION > 8
|| Tcl_LimitExceeded(tclinfo.interp) // True if the interpreter cannot continue
#endif
)
{
char buf[50];
sprintf(buf, _(e_exit_code_nr), tclinfo.exitvalue);
tclerrmsg(buf);
if (tclinfo.exitvalue == 0)
{
did_emsg = 0;
newerr = OK;
}
else
newerr = FAIL;
tcldelthisinterp();
}
else
{
char *result;
result = (char *)Tcl_GetStringResult(tclinfo.interp);
if (error == TCL_OK)
{
tclmsg(result);
newerr = OK;
}
else
{
tclerrmsg(result);
newerr = FAIL;
}
}
return newerr;
}
/*
* ":tcl"
*/
void
ex_tcl(exarg_T *eap)
{
char_u *script;
int err;
script = script_get(eap, eap->arg);
if (!eap->skip)
{
err = tclinit(eap);
if (err == OK)
{
Tcl_AllowExceptions(tclinfo.interp);
if (script == NULL)
err = Tcl_Eval(tclinfo.interp, (char *)eap->arg);
else
err = Tcl_Eval(tclinfo.interp, (char *)script);
err = tclexit(err);
}
}
vim_free(script);
}
/*
* ":tclfile"
*/
void
ex_tclfile(exarg_T *eap)
{
char *file = (char *)eap->arg;
int err;
err = tclinit(eap);
if (err == OK)
{
Tcl_AllowExceptions(tclinfo.interp);
err = Tcl_EvalFile(tclinfo.interp, file);
err = tclexit(err);
}
}
/*
* ":tcldo"
*/
void
ex_tcldo(exarg_T *eap)
{
char *script, *line;
int err, rs, re, lnum;
char var_lnum[VARNAME_SIZE]; // must be writeable memory
char var_line[VARNAME_SIZE];
linenr_T first_line = 0;
linenr_T last_line = 0;
buf_T *was_curbuf = curbuf;
rs = eap->line1;
re = eap->line2;
script = (char *)eap->arg;
strcpy(var_lnum, VAR_CURLNUM);
strcpy(var_line, VAR_CURLINE);
err = tclinit(eap);
if (err != OK)
return;
lnum = row2tcl(rs);
Tcl_LinkVar(tclinfo.interp, var_lnum, (char *)&lnum, TCL_LINK_INT|TCL_LINK_READ_ONLY);
err = TCL_OK;
if (u_save((linenr_T)(rs-1), (linenr_T)(re+1)) != OK)
{
Tcl_SetResult(tclinfo.interp, _("cannot save undo information"), TCL_STATIC);
err = TCL_ERROR;
}
while (err == TCL_OK && rs <= re)
{
if ((linenr_T)rs > curbuf->b_ml.ml_line_count)
break;
line = (char *)ml_get_buf(curbuf, (linenr_T)rs, FALSE);
if (!line)
{
Tcl_SetResult(tclinfo.interp, _("cannot get line"), TCL_STATIC);
err = TCL_ERROR;
break;
}
Tcl_SetVar(tclinfo.interp, var_line, line, 0);
Tcl_AllowExceptions(tclinfo.interp);
err = Tcl_Eval(tclinfo.interp, script);
if (err != TCL_OK
|| Tcl_InterpDeleted(tclinfo.interp)
#if (TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION >= 5) || TCL_MAJOR_VERSION > 8
|| Tcl_LimitExceeded(tclinfo.interp)
#endif
|| curbuf != was_curbuf
|| (linenr_T)rs > curbuf->b_ml.ml_line_count)
break;
line = (char *)Tcl_GetVar(tclinfo.interp, var_line, 0);
if (line)
{
if (ml_replace((linenr_T)rs, (char_u *)line, TRUE) != OK)
{
Tcl_SetResult(tclinfo.interp, _("cannot replace line"), TCL_STATIC);
err = TCL_ERROR;
break;
}
if (first_line == 0)
first_line = rs;
last_line = rs;
}
++rs;
++lnum;
Tcl_UpdateLinkedVar(tclinfo.interp, var_lnum);
}
if (first_line)
changed_lines(first_line, 0, last_line + 1, (long)0);
Tcl_UnsetVar(tclinfo.interp, var_line, 0);
Tcl_UnlinkVar(tclinfo.interp, var_lnum);
if (err == TCL_OK)
Tcl_ResetResult(tclinfo.interp);
(void)tclexit(err);
}
static void
tcldelallrefs(struct ref *ref)
{
struct ref *next;
int err;
char *result;
#ifdef DYNAMIC_TCL
// TODO: this code currently crashes Vim on exit
if (exiting)
return;
#endif
while (ref != NULL)
{
next = ref->next;
if (ref->interp)
{
if (ref->delcmd)
{
err = Tcl_GlobalEvalObj(ref->interp, ref->delcmd);
if (err != TCL_OK)
{
result = (char *)Tcl_GetStringResult(ref->interp);
if (result)
tclerrmsg(result);
}
Tcl_DecrRefCount(ref->delcmd);
ref->delcmd = NULL;
}
Tcl_DeleteCommandFromToken(ref->interp, ref->cmd);
}
Tcl_Free((char *)ref);
ref = next;
}
}
void
tcl_buffer_free(buf_T *buf)
{
struct ref *reflist;
#ifdef DYNAMIC_TCL
if (!stubs_initialized) // Not using Tcl, nothing to do.
return;
#endif
reflist = (struct ref *)(buf->b_tcl_ref);
if (reflist != &refsdeleted)
{
buf->b_tcl_ref = (void *)&refsdeleted;
tcldelallrefs(reflist);
buf->b_tcl_ref = NULL;
}
}
void
tcl_window_free(win_T *win)
{
struct ref *reflist;
#ifdef DYNAMIC_TCL
if (!stubs_initialized) // Not using Tcl, nothing to do.
return;
#endif
reflist = (struct ref*)(win->w_tcl_ref);
if (reflist != &refsdeleted)
{
win->w_tcl_ref = (void *)&refsdeleted;
tcldelallrefs(reflist);
win->w_tcl_ref = NULL;
}
}
// The End
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