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-rw-r--r--src/if_tcl.c2118
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diff --git a/src/if_tcl.c b/src/if_tcl.c
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+/* vi:set ts=8 sw=4:
+ *
+ * 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 <errno.h>
+#include <string.h>
+
+typedef struct
+{
+ Tcl_Interp *interp;
+ int range_start, range_end;
+ int lbase;
+ char *curbuf, *curwin;
+} tcl_info;
+
+static tcl_info tclinfo = { NULL, 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)
+
+/*
+ * List of Tcl interpreters who reference a vim window or buffer.
+ * Each buffer and window has it's own list in the 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
+
+/*
+ * Declare HANDLE for perl.dll and function pointers.
+ */
+static HANDLE hTclLib = NULL;
+Tcl_Interp* (*dll_Tcl_CreateInterp)();
+
+/*
+ * Table of name to function pointer of tcl.
+ */
+#define TCL_PROC FARPROC
+static struct {
+ char* name;
+ TCL_PROC* ptr;
+} tcl_funcname_table[] = {
+ {"Tcl_CreateInterp", (TCL_PROC*)&dll_Tcl_CreateInterp},
+ {NULL, NULL},
+};
+
+/*
+ * Make all runtime-links of tcl.
+ *
+ * 1. Get module handle using LoadLibraryEx.
+ * 2. Get pointer to perl 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 = LoadLibraryEx(libname, NULL, 0)))
+ {
+ if (verbose)
+ EMSG2(_(e_loadlib), libname);
+ return FAIL;
+ }
+ for (i = 0; tcl_funcname_table[i].ptr; ++i)
+ {
+ if (!(*tcl_funcname_table[i].ptr = GetProcAddress(hTclLib,
+ tcl_funcname_table[i].name)))
+ {
+ FreeLibrary(hTclLib);
+ hTclLib = NULL;
+ if (verbose)
+ EMSG2(_(e_loadfunc), 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(arg)
+ char *arg;
+{
+#ifndef DYNAMIC_TCL
+ Tcl_FindExecutable(arg);
+#else
+ find_executable_arg = 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(verbose)
+ int verbose;
+{
+ if (!stubs_initialized && find_executable_arg != NULL
+ && tcl_runtime_link_init(DYNAMIC_TCL_DLL, verbose) == OK)
+ {
+ Tcl_Interp *interp;
+
+ if (interp = dll_Tcl_CreateInterp())
+ {
+ if (Tcl_InitStubs(interp, DYNAMIC_TCL_VER, 0))
+ {
+ Tcl_FindExecutable(find_executable_arg);
+ Tcl_DeleteInterp(interp);
+ stubs_initialized = TRUE;
+ }
+ /* FIXME: When Tcl_InitStubs() was failed, how delete interp? */
+ }
+ }
+ return stubs_initialized;
+}
+#endif
+
+ void
+tcl_end()
+{
+#ifdef DYNAMIC_TCL
+ if (hTclLib)
+ {
+ FreeLibrary(hTclLib);
+ hTclLib = NULL;
+ }
+#endif
+}
+
+/****************************************************************************
+ Tcl commands
+ ****************************************************************************/
+
+/*
+ * Replace standard "exit" and "catch" commands.
+ *
+ * This is a design flaw in Tcl - the standard "exit" command just calls
+ * exit() and kills the application. It should return TCL_EXIT to the
+ * app, which then decides if it wants to terminate or not. In our case,
+ * we just delete the Tcl interpreter (and create a new one with the next
+ * :tcl command).
+ */
+#define TCL_EXIT 5
+
+/* ARGSUSED */
+ static int
+exitcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ 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:
+ Tcl_SetObjResult(interp, Tcl_NewIntObj(value));
+ return TCL_EXIT;
+ default:
+ Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?");
+ }
+ return TCL_ERROR;
+}
+
+/* ARGSUSED */
+ static int
+catchcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+{
+ char *varname = NULL;
+ int result;
+
+ switch (objc)
+ {
+ case 3:
+ varname = Tcl_GetStringFromObj(objv[2], NULL);
+ /* fallthrough */
+ case 2:
+ Tcl_ResetResult(interp);
+ Tcl_AllowExceptions(interp);
+ result = Tcl_EvalObj(interp, objv[1]);
+ if (result == TCL_EXIT)
+ return result;
+ if (varname)
+ {
+ if (Tcl_SetVar(interp, varname, Tcl_GetStringResult(interp), 0) == NULL)
+ {
+ Tcl_SetResult(interp, "couldn't save command result in variable", TCL_STATIC);
+ return TCL_ERROR;
+ }
+ }
+ Tcl_SetObjResult(interp, Tcl_NewIntObj(result));
+ return TCL_OK;
+ default:
+ Tcl_WrongNumArgs(interp, 1, objv, "command ?varName?");
+ }
+ return TCL_ERROR;
+}
+
+/*
+ * "::vim::beep" - what Vi[m] does best :-)
+ */
+/* ARGSUSED */
+ static int
+beepcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+{
+ if (objc != 1)
+ {
+ Tcl_WrongNumArgs(interp, 1, objv, NULL);
+ return TCL_ERROR;
+ }
+ vim_beep();
+ return TCL_OK;
+}
+
+/*
+ * "::vim::buffer list" - create a list of buffer commands.
+ * "::vim::bufffer {N}" - create buffer command for buffer N.
+ * "::vim::buffer new" - create a new buffer (not implemented)
+ */
+/* ARGSUSED */
+ static int
+buffercmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ 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 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 (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ {
+ 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 (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ {
+ 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.
+ */
+/* ARGSUSED */
+ static int
+windowcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ 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(ref, interp, objc, objv)
+ 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 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, FALSE) != 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, FALSE);
+ 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->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(NOT_VALID);
+ curbuf = savebuf;
+ curwin = savewin;
+ if (flags & FL_ADJUST_CURSOR)
+ check_cursor();
+ if (flags & (FL_UPDATE_SCREEN | FL_UPDATE_CURBUF))
+ update_screen(NOT_VALID);
+
+ return err;
+}
+
+/*
+ * This function implements the window commands.
+ */
+ static int
+winselfcmd(ref, interp, objc, objv)
+ 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 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->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);
+ 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(NOT_VALID);
+
+ return err;
+}
+
+
+/* ARGSUSED */
+ static int
+commandcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+{
+ int err;
+
+ err = tcldoexcommand(interp, objc, objv, 1);
+ update_screen(VALID);
+ return err;
+}
+
+/* ARGSUSED */
+ static int
+optioncmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+{
+ int err;
+
+ err = tclsetoption(interp, objc, objv, 1);
+ update_screen(VALID);
+ return err;
+}
+
+/* ARGSUSED */
+ static int
+exprcmd(dummy, interp, objc, objv)
+ ClientData dummy;
+ 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(interp, obj, valueP, buf)
+ 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 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)
+ 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 "$win command".
+ */
+ static int
+tcldoexcommand(interp, objc, objv, objn)
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+ int objn;
+{
+ tcl_info saveinfo;
+ int err, flag, nobjs;
+ char *arg;
+
+ nobjs = objc - objn;
+ if (nobjs < 1 || nobjs > 2)
+ {
+ Tcl_WrongNumArgs(interp, objn, objv, "?-quiet? exCommand");
+ return TCL_ERROR;
+ }
+
+ flag = 0;
+ if (nobjs == 2)
+ {
+ arg = Tcl_GetStringFromObj(objv[objn], NULL);
+ if (strcmp(arg, "-quiet") == 0)
+ flag = 1;
+ else
+ {
+ Tcl_ResetResult(interp);
+ Tcl_AppendResult(interp, _("unknown flag: "), arg, (char *)0);
+ return TCL_ERROR;
+ }
+ ++objn;
+ }
+
+ memcpy(&saveinfo, &tclinfo, sizeof(tcl_info));
+ tclinfo.interp = NULL;
+ tclinfo.curwin = NULL;
+ tclinfo.curbuf = NULL;
+
+ arg = Tcl_GetStringFromObj(objv[objn], NULL);
+ if (flag)
+ ++emsg_off;
+ do_cmdline_cmd((char_u *)arg);
+ if (flag)
+ --emsg_off;
+ err = vimerror(interp);
+
+ /* If the ex command created a new Tcl interpreter, remove it */
+ if (tclinfo.interp)
+ tcldelthisinterp();
+ memcpy(&tclinfo, &saveinfo, sizeof(tcl_info));
+ tclupdatevars();
+
+ return err;
+}
+
+/*
+ * Do-it-all function for "::vim::option", "$buf option" and "$win option".
+ */
+ static int
+tclsetoption(interp, objc, objv, objn)
+ Tcl_Interp *interp;
+ int objc;
+ Tcl_Obj *CONST objv[];
+ int objn;
+{
+ int err, nobjs, idx;
+ char_u *option;
+ int isnum;
+ long lval;
+ char_u *sval;
+ Tcl_Obj *resobj;
+
+ enum { OPT_OFF, OPT_ON, OPT_TOGGLE };
+ static char *optkw[] = { "off", "on", "toggle", (char *)0 };
+
+ nobjs = objc - objn;
+ if (nobjs != 1 && nobjs != 2)
+ {
+ Tcl_WrongNumArgs(interp, objn, objv, "vimOption ?value?");
+ return TCL_ERROR;
+ }
+
+ option = (char_u *)Tcl_GetStringFromObj(objv[objn], NULL);
+ ++objn;
+ isnum = get_option_value(option, &lval, &sval, 0);
+ err = TCL_OK;
+ switch (isnum)
+ {
+ case 0:
+ Tcl_SetResult(interp, (char *)sval, TCL_VOLATILE);
+ vim_free(sval);
+ break;
+ case 1:
+ resobj = Tcl_NewLongObj(lval);
+ Tcl_SetObjResult(interp, resobj);
+ break;
+ default:
+ Tcl_SetResult(interp, _("unknown vimOption"), TCL_STATIC);
+ return TCL_ERROR;
+ }
+ if (nobjs == 2)
+ {
+ if (isnum)
+ {
+ sval = NULL; /* avoid compiler warning */
+ err = Tcl_GetIndexFromObj(interp, objv[objn], optkw, "", 0, &idx);
+ if (err != TCL_OK)
+ {
+ Tcl_ResetResult(interp);
+ err = Tcl_GetLongFromObj(interp, objv[objn], &lval);
+ }
+ else
+ switch (idx)
+ {
+ case OPT_ON:
+ lval = 1;
+ break;
+ case OPT_OFF:
+ lval = 0;
+ break;
+ case OPT_TOGGLE:
+ lval = !lval;
+ break;
+ }
+ }
+ else
+ sval = (char_u *)Tcl_GetStringFromObj(objv[objn], NULL);
+ if (err == TCL_OK)
+ {
+ set_option_value(option, lval, sval, OPT_LOCAL);
+ err = vimerror(interp);
+ }
+ }
+ return err;
+}
+
+/*
+ * Do-it-all function for "::vim::expr", "$buf expr" and "$win expr".
+ */
+ static int
+tclvimexpr(interp, objc, objv, objn)
+ 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, NULL);
+ if (str == NULL)
+ Tcl_SetResult(interp, _("invalid expression"), TCL_STATIC);
+ else
+ Tcl_SetResult(interp, str, TCL_VOLATILE);
+ 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(interp)
+ 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(cref)
+ ClientData cref;
+{
+ struct ref *ref = (struct ref *)cref;
+
+ if (ref->delcmd)
+ {
+ Tcl_DecrRefCount(ref->delcmd);
+ ref->delcmd = NULL;
+ }
+ ref->interp = NULL;
+}
+
+ static char *
+tclgetref(interp, refstartP, prefix, vimobj, proc)
+ Tcl_Interp *interp;
+ void **refstartP; /* ptr to 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)
+ sprintf(name, "::vim::%s", Tcl_GetCommandName(interp, ref->cmd));
+ else
+ {
+ if (unused)
+ ref = unused;
+ else
+ {
+ ref = (struct ref *)Tcl_Alloc(sizeof(struct ref));
+#if 0 /* Tcl_Alloc either succeeds or does not return */
+ if (!ref)
+ {
+ Tcl_SetResult(interp, "out of memory", TCL_STATIC);
+ return NULL;
+ }
+#endif
+ ref->interp = NULL;
+ ref->next = (struct ref *)(*refstartP);
+ (*refstartP) = (void *)ref;
+ }
+
+ /* This might break on some exotic systems... */
+ sprintf(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(interp, win)
+ Tcl_Interp *interp;
+ win_T *win;
+{
+ return tclgetref(interp, &(win->tcl_ref), "win", (void *)win, winselfcmd);
+}
+
+ static char *
+tclgetbuffer(interp, buf)
+ Tcl_Interp *interp;
+ buf_T *buf;
+{
+ return tclgetref(interp, &(buf->tcl_ref), "buf", (void *)buf, bufselfcmd);
+}
+
+ static int
+tclsetdelcmd(interp, reflist, vimobj, delcmd)
+ 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? */
+ EMSG(_("E280: TCL FATAL ERROR: reflist corrupt!? Please report this to vim-dev@vim.org"));
+ Tcl_SetResult(interp, _("cannot register callback command: buffer/window reference not found"), TCL_STATIC);
+ return TCL_ERROR;
+}
+
+
+/*******************************************
+ I/O Channel
+********************************************/
+
+/* ARGSUSED */
+ static int
+channel_close(instance, interp)
+ ClientData instance;
+ Tcl_Interp *interp;
+{
+ int err = 0;
+
+ /* currently does nothing */
+
+ if (instance != VIMOUT && instance != VIMERR)
+ {
+ Tcl_SetErrno(EBADF);
+ err = EBADF;
+ }
+ return err;
+}
+
+/* ARGSUSED */
+ static int
+channel_input(instance, buf, bufsiz, errptr)
+ ClientData instance;
+ char *buf;
+ int bufsiz;
+ int *errptr;
+{
+
+ /* input is currently not supported */
+
+ Tcl_SetErrno(EINVAL);
+ if (errptr)
+ *errptr = EINVAL;
+ return -1;
+}
+
+ static int
+channel_output(instance, buf, bufsiz, errptr)
+ ClientData instance;
+ 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;
+}
+
+/* ARGSUSED */
+ static void
+channel_watch(instance, mask)
+ ClientData instance;
+ int mask;
+{
+ Tcl_SetErrno(EINVAL);
+}
+
+/* ARGSUSED */
+ static int
+channel_gethandle(instance, direction, handleptr)
+ ClientData instance;
+ int direction;
+ ClientData *handleptr;
+{
+ Tcl_SetErrno(EINVAL);
+ return EINVAL;
+}
+
+
+static Tcl_ChannelType channel_type =
+{
+ "vimmessage",
+ NULL, /* blockmode */
+ channel_close,
+ channel_input,
+ channel_output,
+ NULL, /* seek */
+ NULL, /* set option */
+ NULL, /* get option */
+ channel_watch,
+ channel_gethandle
+};
+
+/**********************************
+ Interface to vim
+ **********************************/
+
+ static void
+tclupdatevars()
+{
+ 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(eap)
+ exarg_T *eap;
+{
+ char varname[VARNAME_SIZE]; /* Tcl_LinkVar requires writeable varname */
+ char *name;
+
+#ifdef DYNAMIC_TCL
+ if (!tcl_enabled(TRUE))
+ {
+ EMSG(_("E571: Sorry, this command is disabled: the Tcl library could not be loaded."));
+ return FAIL;
+ }
+#endif
+
+ if (!tclinfo.interp)
+ {
+ Tcl_Interp *interp;
+ static Tcl_Channel ch1, ch2;
+
+ /* replace stdout and stderr */
+ ch1 = Tcl_CreateChannel(&channel_type, "vimout", VIMOUT, TCL_WRITABLE);
+ ch2 = Tcl_CreateChannel(&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");
+ Tcl_SetChannelOption(interp, ch2, "-buffering", "line");
+
+ /* replace some standard Tcl commands */
+ Tcl_DeleteCommand(interp, "exit");
+ Tcl_CreateObjCommand(interp, "exit", exitcmd,
+ (ClientData)NULL, (Tcl_CmdDeleteProc *)NULL);
+ Tcl_DeleteCommand(interp, "catch");
+ Tcl_CreateObjCommand(interp, "catch", catchcmd,
+ (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();
+ }
+ return OK;
+}
+
+ static void
+tclerrmsg(text)
+ char *text;
+{
+ char *next;
+
+ while ((next=strchr(text, '\n')))
+ {
+ *next++ = '\0';
+ EMSG(text);
+ text = next;
+ }
+ if (*text)
+ EMSG(text);
+}
+
+ static void
+tclmsg(text)
+ char *text;
+{
+ char *next;
+
+ while ((next=strchr(text, '\n')))
+ {
+ *next++ = '\0';
+ MSG(text);
+ text = next;
+ }
+ if (*text)
+ MSG(text);
+}
+
+ static void
+tcldelthisinterp()
+{
+ 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 refering 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(error)
+ int error;
+{
+ int newerr = OK;
+
+ if (error == TCL_EXIT )
+ {
+ int retval;
+ char buf[32];
+ Tcl_Obj *robj;
+
+ robj = Tcl_GetObjResult(tclinfo.interp);
+ if( Tcl_GetIntFromObj(tclinfo.interp, robj, &retval) != TCL_OK )
+ {
+ EMSG(_("E281: TCL ERROR: exit code is not int!? Please report this to vim-dev@vim.org"));
+ newerr = FAIL;
+ }
+ else
+ {
+ sprintf(buf, "E572: exit code %d", retval);
+ tclerrmsg(buf);
+ if (retval == 0 )
+ {
+ did_emsg = 0;
+ newerr = OK;
+ }
+ else
+ newerr = FAIL;
+ }
+
+ tcldelthisinterp();
+ }
+ else
+ {
+ char *result;
+
+ result = Tcl_GetStringResult(tclinfo.interp);
+ if (error == TCL_OK)
+ {
+ tclmsg(result);
+ newerr = OK;
+ }
+ else
+ {
+ tclerrmsg(result);
+ newerr = FAIL;
+ }
+ }
+
+ return newerr;
+}
+
+/*
+ * ":tcl"
+ */
+ void
+ex_tcl(eap)
+ 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(eap)
+ 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(eap)
+ 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;
+
+ 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)
+ {
+ 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)
+ break;
+ line = 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(ref)
+ struct ref *ref;
+{
+ struct ref *next;
+ int err;
+ char *result;
+
+ while (ref != NULL)
+ {
+ next = ref->next;
+ if (ref->interp)
+ {
+ if (ref->delcmd)
+ {
+ err = Tcl_GlobalEvalObj(ref->interp, ref->delcmd);
+ if (err != TCL_OK)
+ {
+ result = 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)
+ buf_T *buf;
+{
+ struct ref *reflist;
+
+#ifdef DYNAMIC_TCL
+ if (!stubs_initialized) /* Not using Tcl, nothing to do. */
+ return;
+#endif
+
+ reflist = (struct ref*)(buf->tcl_ref);
+ if (reflist != &refsdeleted)
+ {
+ buf->tcl_ref = (void *)&refsdeleted;
+ tcldelallrefs(reflist);
+ buf->tcl_ref = NULL;
+ }
+}
+
+#if defined(FEAT_WINDOWS) || defined(PROTO)
+ void
+tcl_window_free(win)
+ win_T *win;
+{
+ struct ref *reflist;
+
+#ifdef DYNAMIC_TCL
+ if (!stubs_initialized) /* Not using Tcl, nothing to do. */
+ return;
+#endif
+
+ reflist = (struct ref*)(win->tcl_ref);
+ if (reflist != &refsdeleted)
+ {
+ win->tcl_ref = (void *)&refsdeleted;
+ tcldelallrefs(reflist);
+ win->tcl_ref = NULL;
+ }
+}
+#endif
+
+/* The End */