Import Tcl 8.5.15 (as of svn r89086)
This commit is contained in:
Zachary Ware
317
win/tclAppInit.c
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317
win/tclAppInit.c
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/*
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* tclAppInit.c --
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*
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* Provides a default version of the main program and Tcl_AppInit
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* function for Tcl applications (without Tk). Note that this program
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* must be built in Win32 console mode to work properly.
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*
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* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
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* Copyright (c) 1998-1999 by Scriptics Corporation.
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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#include "tcl.h"
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#include <windows.h>
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#include <locale.h>
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#ifdef TCL_TEST
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extern Tcl_PackageInitProc Procbodytest_Init;
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extern Tcl_PackageInitProc Procbodytest_SafeInit;
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extern Tcl_PackageInitProc Tcltest_Init;
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extern Tcl_PackageInitProc TclObjTest_Init;
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#endif /* TCL_TEST */
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#if defined(__GNUC__)
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static void setargv(int *argcPtr, char ***argvPtr);
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#endif /* __GNUC__ */
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/*
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*----------------------------------------------------------------------
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*
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* main --
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*
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* This is the main program for the application.
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*
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* Results:
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* None: Tcl_Main never returns here, so this function never returns
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* either.
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*
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* Side effects:
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* Whatever the application does.
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*
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*----------------------------------------------------------------------
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*/
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int
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main(
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int argc,
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char *argv[])
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{
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/*
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* The following #if block allows you to change the AppInit function by
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* using a #define of TCL_LOCAL_APPINIT instead of rewriting this entire
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* file. The #if checks for that #define and uses Tcl_AppInit if it
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* doesn't exist.
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*/
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#ifndef TCL_LOCAL_APPINIT
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#define TCL_LOCAL_APPINIT Tcl_AppInit
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#endif
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extern int TCL_LOCAL_APPINIT (Tcl_Interp *interp);
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/*
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* The following #if block allows you to change how Tcl finds the startup
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* script, prime the library or encoding paths, fiddle with the argv,
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* etc., without needing to rewrite Tcl_Main()
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*/
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#ifdef TCL_LOCAL_MAIN_HOOK
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extern int TCL_LOCAL_MAIN_HOOK (int *argc, char ***argv);
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#endif
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char *p;
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/*
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* Set up the default locale to be standard "C" locale so parsing is
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* performed correctly.
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*/
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#if defined(__GNUC__)
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setargv( &argc, &argv );
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#endif
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setlocale(LC_ALL, "C");
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/*
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* Forward slashes substituted for backslashes.
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*/
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for (p = argv[0]; *p != '\0'; p++) {
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if (*p == '\\') {
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*p = '/';
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}
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}
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#ifdef TCL_LOCAL_MAIN_HOOK
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TCL_LOCAL_MAIN_HOOK(&argc, &argv);
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#endif
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Tcl_Main(argc, argv, TCL_LOCAL_APPINIT);
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return 0; /* Needed only to prevent compiler warning. */
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_AppInit --
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*
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* This function performs application-specific initialization. Most
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* applications, especially those that incorporate additional packages,
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* will have their own version of this function.
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*
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* Results:
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* Returns a standard Tcl completion code, and leaves an error message in
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* the interp's result if an error occurs.
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*
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* Side effects:
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* Depends on the startup script.
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*
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*----------------------------------------------------------------------
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*/
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int
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Tcl_AppInit(
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Tcl_Interp *interp) /* Interpreter for application. */
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{
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if (Tcl_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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#ifdef TCL_TEST
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if (Tcltest_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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Tcl_StaticPackage(interp, "Tcltest", Tcltest_Init, NULL);
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if (TclObjTest_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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if (Procbodytest_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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Tcl_StaticPackage(interp, "procbodytest", Procbodytest_Init,
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Procbodytest_SafeInit);
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#endif /* TCL_TEST */
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#if defined(STATIC_BUILD) && TCL_USE_STATIC_PACKAGES
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{
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extern Tcl_PackageInitProc Registry_Init;
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extern Tcl_PackageInitProc Dde_Init;
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extern Tcl_PackageInitProc Dde_SafeInit;
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if (Registry_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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Tcl_StaticPackage(interp, "registry", Registry_Init, NULL);
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if (Dde_Init(interp) == TCL_ERROR) {
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return TCL_ERROR;
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}
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Tcl_StaticPackage(interp, "dde", Dde_Init, Dde_SafeInit);
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}
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#endif
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/*
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* Call the init functions for included packages. Each call should look
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* like this:
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*
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* if (Mod_Init(interp) == TCL_ERROR) {
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* return TCL_ERROR;
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* }
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*
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* where "Mod" is the name of the module.
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*/
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/*
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* Call Tcl_CreateCommand for application-specific commands, if they
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* weren't already created by the init functions called above.
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*/
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/*
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* Specify a user-specific startup file to invoke if the application is
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* run interactively. Typically the startup file is "~/.apprc" where "app"
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* is the name of the application. If this line is deleted then no
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* user-specific startup file will be run under any conditions.
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*/
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Tcl_SetVar(interp, "tcl_rcFileName", "~/tclshrc.tcl", TCL_GLOBAL_ONLY);
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return TCL_OK;
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}
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/*
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*-------------------------------------------------------------------------
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*
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* setargv --
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*
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* Parse the Windows command line string into argc/argv. Done here
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* because we don't trust the builtin argument parser in crt0. Windows
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* applications are responsible for breaking their command line into
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* arguments.
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*
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* 2N backslashes + quote -> N backslashes + begin quoted string
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* 2N + 1 backslashes + quote -> literal
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* N backslashes + non-quote -> literal
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* quote + quote in a quoted string -> single quote
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* quote + quote not in quoted string -> empty string
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* quote -> begin quoted string
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*
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* Results:
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* Fills argcPtr with the number of arguments and argvPtr with the array
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* of arguments.
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*
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* Side effects:
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* Memory allocated.
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*
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*--------------------------------------------------------------------------
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*/
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#if defined(__GNUC__)
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static void
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setargv(
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int *argcPtr, /* Filled with number of argument strings. */
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char ***argvPtr) /* Filled with argument strings (malloc'd). */
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{
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char *cmdLine, *p, *arg, *argSpace;
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char **argv;
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int argc, size, inquote, copy, slashes;
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cmdLine = GetCommandLine(); /* INTL: BUG */
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/*
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* Precompute an overly pessimistic guess at the number of arguments in
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* the command line by counting non-space spans.
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*/
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size = 2;
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for (p = cmdLine; *p != '\0'; p++) {
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if ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
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size++;
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while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
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p++;
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}
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if (*p == '\0') {
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break;
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}
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}
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}
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argSpace = (char *) ckalloc(
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(unsigned) (size * sizeof(char *) + strlen(cmdLine) + 1));
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argv = (char **) argSpace;
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argSpace += size * sizeof(char *);
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size--;
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p = cmdLine;
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for (argc = 0; argc < size; argc++) {
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argv[argc] = arg = argSpace;
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while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
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p++;
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}
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if (*p == '\0') {
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break;
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}
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inquote = 0;
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slashes = 0;
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while (1) {
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copy = 1;
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while (*p == '\\') {
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slashes++;
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p++;
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}
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if (*p == '"') {
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if ((slashes & 1) == 0) {
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copy = 0;
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if ((inquote) && (p[1] == '"')) {
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p++;
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copy = 1;
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} else {
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inquote = !inquote;
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}
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}
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slashes >>= 1;
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}
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while (slashes) {
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*arg = '\\';
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arg++;
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slashes--;
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}
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if ((*p == '\0') || (!inquote &&
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((*p == ' ') || (*p == '\t')))) { /* INTL: ISO space. */
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break;
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}
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if (copy != 0) {
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*arg = *p;
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arg++;
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}
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p++;
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}
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*arg = '\0';
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argSpace = arg + 1;
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}
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argv[argc] = NULL;
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*argcPtr = argc;
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*argvPtr = argv;
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}
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#endif /* __GNUC__ */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 4
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* fill-column: 78
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* End:
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*/
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