home *** CD-ROM | disk | FTP | other *** search
- /*
- * tclAppInit.c --
- *
- * Provides a default version of the main program and Tcl_AppInit
- * procedure for Tcl applications (without Tk). Note that this
- * program must be built in Win32 console mode to work properly.
- *
- * Copyright (c) 1996 by Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * SCCS: @(#) tclAppInit.c 1.12 97/04/30 11:04:50
- */
-
- #include "tcl.h"
- #include <windows.h>
- #include <locale.h>
-
- #ifdef TCL_TEST
- EXTERN int Tcltest_Init _ANSI_ARGS_((Tcl_Interp *interp));
- EXTERN int TclObjTest_Init _ANSI_ARGS_((Tcl_Interp *interp));
- #endif /* TCL_TEST */
-
- static void setargv _ANSI_ARGS_((int *argcPtr, char ***argvPtr));
-
-
- /*
- *----------------------------------------------------------------------
- *
- * main --
- *
- * This is the main program for the application.
- *
- * Results:
- * None: Tcl_Main never returns here, so this procedure never
- * returns either.
- *
- * Side effects:
- * Whatever the application does.
- *
- *----------------------------------------------------------------------
- */
-
- int
- main(argc, argv)
- int argc; /* Number of command-line arguments. */
- char **argv; /* Values of command-line arguments. */
- {
- char *p;
- char buffer[MAX_PATH];
-
- /*
- * Set up the default locale to be standard "C" locale so parsing
- * is performed correctly.
- */
-
- setlocale(LC_ALL, "C");
-
- setargv(&argc, &argv);
-
- /*
- * Replace argv[0] with full pathname of executable, and forward
- * slashes substituted for backslashes.
- */
-
- GetModuleFileName(NULL, buffer, sizeof(buffer));
- argv[0] = buffer;
- for (p = buffer; *p != '\0'; p++) {
- if (*p == '\\') {
- *p = '/';
- }
- }
-
- Tcl_Main(argc, argv, Tcl_AppInit);
- return 0; /* Needed only to prevent compiler warning. */
- }
-
-
- /*
- *----------------------------------------------------------------------
- *
- * Tcl_AppInit --
- *
- * This procedure performs application-specific initialization.
- * Most applications, especially those that incorporate additional
- * packages, will have their own version of this procedure.
- *
- * Results:
- * Returns a standard Tcl completion code, and leaves an error
- * message in interp->result if an error occurs.
- *
- * Side effects:
- * Depends on the startup script.
- *
- *----------------------------------------------------------------------
- */
-
- int
- Tcl_AppInit(interp)
- Tcl_Interp *interp; /* Interpreter for application. */
- {
- if (Tcl_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
-
- #ifdef TCL_TEST
- if (Tcltest_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- Tcl_StaticPackage(interp, "Tcltest", Tcltest_Init,
- (Tcl_PackageInitProc *) NULL);
- if (TclObjTest_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- #endif /* TCL_TEST */
-
- /*
- * Call the init procedures for included packages. Each call should
- * look like this:
- *
- * if (Mod_Init(interp) == TCL_ERROR) {
- * return TCL_ERROR;
- * }
- *
- * where "Mod" is the name of the module.
- */
-
- /*
- * Call Tcl_CreateCommand for application-specific commands, if
- * they weren't already created by the init procedures called above.
- */
-
- /*
- * Specify a user-specific startup file to invoke if the application
- * is run interactively. Typically the startup file is "~/.apprc"
- * where "app" is the name of the application. If this line is deleted
- * then no user-specific startup file will be run under any conditions.
- */
-
- Tcl_SetVar(interp, "tcl_rcFileName", "~/tclshrc.tcl", TCL_GLOBAL_ONLY);
- return TCL_OK;
- }
-
- /*
- *-------------------------------------------------------------------------
- *
- * setargv --
- *
- * Parse the Windows command line string into argc/argv. Done here
- * because we don't trust the builtin argument parser in crt0.
- * Windows applications are responsible for breaking their command
- * line into arguments.
- *
- * 2N backslashes + quote -> N backslashes + begin quoted string
- * 2N + 1 backslashes + quote -> literal
- * N backslashes + non-quote -> literal
- * quote + quote in a quoted string -> single quote
- * quote + quote not in quoted string -> empty string
- * quote -> begin quoted string
- *
- * Results:
- * Fills argcPtr with the number of arguments and argvPtr with the
- * array of arguments.
- *
- * Side effects:
- * Memory allocated.
- *
- *--------------------------------------------------------------------------
- */
-
- static void
- setargv(argcPtr, argvPtr)
- int *argcPtr; /* Filled with number of argument strings. */
- char ***argvPtr; /* Filled with argument strings (malloc'd). */
- {
- char *cmdLine, *p, *arg, *argSpace;
- char **argv;
- int argc, size, inquote, copy, slashes;
-
- cmdLine = GetCommandLine();
-
- /*
- * Precompute an overly pessimistic guess at the number of arguments
- * in the command line by counting non-space spans.
- */
-
- size = 2;
- for (p = cmdLine; *p != '\0'; p++) {
- if (isspace(*p)) {
- size++;
- while (isspace(*p)) {
- p++;
- }
- if (*p == '\0') {
- break;
- }
- }
- }
- argSpace = (char *) ckalloc((unsigned) (size * sizeof(char *)
- + strlen(cmdLine) + 1));
- argv = (char **) argSpace;
- argSpace += size * sizeof(char *);
- size--;
-
- p = cmdLine;
- for (argc = 0; argc < size; argc++) {
- argv[argc] = arg = argSpace;
- while (isspace(*p)) {
- p++;
- }
- if (*p == '\0') {
- break;
- }
-
- inquote = 0;
- slashes = 0;
- while (1) {
- copy = 1;
- while (*p == '\\') {
- slashes++;
- p++;
- }
- if (*p == '"') {
- if ((slashes & 1) == 0) {
- copy = 0;
- if ((inquote) && (p[1] == '"')) {
- p++;
- copy = 1;
- } else {
- inquote = !inquote;
- }
- }
- slashes >>= 1;
- }
-
- while (slashes) {
- *arg = '\\';
- arg++;
- slashes--;
- }
-
- if ((*p == '\0') || (!inquote && isspace(*p))) {
- break;
- }
- if (copy != 0) {
- *arg = *p;
- arg++;
- }
- p++;
- }
- *arg = '\0';
- argSpace = arg + 1;
- }
- argv[argc] = NULL;
-
- *argcPtr = argc;
- *argvPtr = argv;
- }
-