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dashley |
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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkmain.c,v 1.1.1.1 2001/06/13 05:05:07 dtashley Exp $ */
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/*
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* tkMain.c --
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*
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* This file contains a generic main program for Tk-based applications.
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* It can be used as-is for many applications, just by supplying a
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* different appInitProc procedure for each specific application.
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* Or, it can be used as a template for creating new main programs
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* for Tk applications.
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*
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* Copyright (c) 1990-1994 The Regents of the University of California.
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* Copyright (c) 1994-1997 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tkmain.c,v 1.1.1.1 2001/06/13 05:05:07 dtashley Exp $
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*/
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#define MODULE_TK_MAIN
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <tcl.h>
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#include <tclInt.h>
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#include "appinit.h"
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#include "build_config.h"
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#include "extninit.h"
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#include "msgstrs.h"
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#include "tk.h"
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#include "tkInt.h"
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#ifdef NO_STDLIB_H
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# include "../compat/stdlib.h"
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#else
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# include <stdlib.h>
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#endif
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#ifdef __WIN32__
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#include "tkWinInt.h"
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#endif
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typedef struct ThreadSpecificData {
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Tcl_Interp *interp; /* Interpreter for this thread. */
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Tcl_DString command; /* Used to assemble lines of terminal input
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* into Tcl commands. */
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Tcl_DString line; /* Used to read the next line from the
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* terminal input. */
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int tty; /* Non-zero means standard input is a
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* terminal-like device. Zero means it's
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* a file. */
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} ThreadSpecificData;
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Tcl_ThreadDataKey dataKey;
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/*
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* Declarations for various library procedures and variables (don't want
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* to include tkInt.h or tkPort.h here, because people might copy this
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* file out of the Tk source directory to make their own modified versions).
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* Note: don't declare "exit" here even though a declaration is really
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* needed, because it will conflict with a declaration elsewhere on
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* some systems.
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*/
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#if !defined(__WIN32__) && !defined(_WIN32)
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extern int isatty _ANSI_ARGS_((int fd));
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extern char * strrchr _ANSI_ARGS_((CONST char *string, int c));
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#endif
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extern void TkpDisplayWarning _ANSI_ARGS_((char *msg,
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char *title));
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/*
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* Forward declarations for procedures defined later in this file.
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*/
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static void Prompt _ANSI_ARGS_((Tcl_Interp *interp, int partial));
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static void StdinProc _ANSI_ARGS_((ClientData clientData,
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int mask));
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/*
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*----------------------------------------------------------------------
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*
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* Tk_MainEx --
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*
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* Main program for Wish and most other Tk-based applications.
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*
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* Results:
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* None. This procedure never returns (it exits the process when
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* it's done.
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*
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* Side effects:
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* This procedure initializes the Tk world and then starts
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* interpreting commands; almost anything could happen, depending
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* on the script being interpreted.
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*
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*----------------------------------------------------------------------
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*/
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void
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Tk_MainEx(argc, argv, appInitProc, interp)
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int argc; /* Number of arguments. */
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char **argv; /* Array of argument strings. */
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Tcl_AppInitProc *appInitProc; /* Application-specific initialization
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* procedure to call after most
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* initialization but before starting
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* to execute commands. This input
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* parameter is ignored because of the
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* integration of the code automatically
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* generated by "mktclapp".
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*/
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Tcl_Interp *interp;
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{
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char *args, *fileName;
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char buf[TCL_INTEGER_SPACE];
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int code;
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size_t length;
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Tcl_Channel inChannel, outChannel;
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Tcl_DString argString;
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ThreadSpecificData *tsdPtr;
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#ifdef __WIN32__
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HANDLE handle;
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#endif
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#if 1
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/* Dope the environment variables so that the first place the
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** run-time code searches for the library files is in the "baked in"
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** libraries. Over time, this should be changed to permanently
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** bake things in so that this trick isn't necessary.
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*/
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putenv("TCL_LIBRARY=" ET_TCL_LIBRARY);
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putenv("TK_LIBRARY=" ET_TK_LIBRARY);
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/* Run the local initialization procedure for the ET module.
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** This will dope the interpreter so that attempts to load the
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** library files will get redirected internally.
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*/
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Et_DoInit(interp);
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#endif
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/* appInitProc = Et_DoInit; */
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/*
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* Ensure that we are getting the matching version of Tcl. This is
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* really only an issue when Tk is loaded dynamically.
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*/
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if (Tcl_InitStubs(interp, TCL_VERSION, 1) == NULL) {
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abort();
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}
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tsdPtr = (ThreadSpecificData *)
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Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
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Tcl_FindExecutable(argv[0]);
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tsdPtr->interp = interp;
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#if (defined(__WIN32__) || defined(MAC_TCL))
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Tk_InitConsoleChannels(interp);
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#endif
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#ifdef TCL_MEM_DEBUG
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Tcl_InitMemory(interp);
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#endif
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/*
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* Parse command-line arguments. A leading "-file" argument is
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* ignored (a historical relic from the distant past). If the
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* next argument doesn't start with a "-" then strip it off and
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* use it as the name of a script file to process.
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*/
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fileName = TclGetStartupScriptFileName();
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if (argc > 1) {
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length = strlen(argv[1]);
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if ((length >= 2) && (strncmp(argv[1], "-file", length) == 0)) {
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argc--;
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argv++;
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}
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}
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if (fileName == NULL) {
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if ((argc > 1) && (argv[1][0] != '-')) {
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fileName = argv[1];
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argc--;
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argv++;
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}
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}
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/*
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* Make command-line arguments available in the Tcl variables "argc"
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* and "argv".
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*/
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args = Tcl_Merge(argc-1, argv+1);
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Tcl_ExternalToUtfDString(NULL, args, -1, &argString);
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Tcl_SetVar(interp, "argv", Tcl_DStringValue(&argString), TCL_GLOBAL_ONLY);
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Tcl_DStringFree(&argString);
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ckfree(args);
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sprintf(buf, "%d", argc-1);
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if (fileName == NULL) {
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Tcl_ExternalToUtfDString(NULL, argv[0], -1, &argString);
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} else {
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fileName = Tcl_ExternalToUtfDString(NULL, fileName, -1, &argString);
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}
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Tcl_SetVar(interp, "argc", buf, TCL_GLOBAL_ONLY);
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Tcl_SetVar(interp, "argv0", Tcl_DStringValue(&argString), TCL_GLOBAL_ONLY);
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| 210 |
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/*
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* Set the "tcl_interactive" variable.
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*/
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/*
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* For now, under Windows, we assume we are not running as a console mode
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* app, so we need to use the GUI console. In order to enable this, we
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* always claim to be running on a tty. This probably isn't the right
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* way to do it.
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*/
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| 220 |
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| 221 |
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#ifdef __WIN32__
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handle = GetStdHandle(STD_INPUT_HANDLE);
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| 224 |
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if ((handle == INVALID_HANDLE_VALUE) || (handle == 0)
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|| (GetFileType(handle) == FILE_TYPE_UNKNOWN)) {
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/*
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* If it's a bad or closed handle, then it's been connected
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* to a wish console window.
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*/
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tsdPtr->tty = 1;
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} else if (GetFileType(handle) == FILE_TYPE_CHAR) {
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/*
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* A character file handle is a tty by definition.
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*/
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| 237 |
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tsdPtr->tty = 1;
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} else {
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tsdPtr->tty = 0;
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}
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| 241 |
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| 242 |
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#else
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tsdPtr->tty = isatty(0);
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#endif
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Tcl_SetVar(interp, "tcl_interactive",
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((fileName == NULL) && tsdPtr->tty) ? "1" : "0", TCL_GLOBAL_ONLY);
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| 247 |
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| 248 |
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/*
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| 249 |
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* Invoke application-specific initialization.
|
| 250 |
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*/
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| 251 |
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| 252 |
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if ((*appInitProc)(interp) != TCL_OK) {
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| 253 |
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TkpDisplayWarning(Tcl_GetStringResult(interp),
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| 254 |
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"Application initialization failed");
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| 255 |
|
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}
|
| 256 |
|
|
|
| 257 |
|
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/* Register any extensions that should be registered for the
|
| 258 |
|
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** executable currently being built.
|
| 259 |
|
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*/
|
| 260 |
|
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ExtninitInit(interp);
|
| 261 |
|
|
|
| 262 |
|
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/* Set a Tcl variable to indicate the particular product
|
| 263 |
|
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** we are building. This is used in the startup message script
|
| 264 |
|
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** to announce product version, and may be used other
|
| 265 |
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** places, as well.
|
| 266 |
|
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*/
|
| 267 |
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Tcl_SetVar(interp,
|
| 268 |
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BUILD_CONFIG_PRODUCT_NAME_VARIABLE,
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| 269 |
|
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BUILD_CONFIG_STATIC_WISH_ALIAS,
|
| 270 |
|
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TCL_GLOBAL_ONLY);
|
| 271 |
|
|
|
| 272 |
|
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/* Set Tcl variable to indicate the relese version of the
|
| 273 |
|
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** product we are building. This is used in the startup message script
|
| 274 |
|
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** to announce product version, and may be used other
|
| 275 |
|
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** places, as well.
|
| 276 |
|
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*/
|
| 277 |
|
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Tcl_SetVar(interp,
|
| 278 |
|
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BUILD_CONFIG_PRODUCT_VERSION_VARIABLE,
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| 279 |
|
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BUILD_CONFIG_RELEASE_VERSION,
|
| 280 |
|
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TCL_GLOBAL_ONLY);
|
| 281 |
|
|
|
| 282 |
|
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/* Change the title of the console window to reflect
|
| 283 |
|
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** the product name and version.
|
| 284 |
|
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*/
|
| 285 |
|
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Tcl_GlobalEval(interp,
|
| 286 |
|
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"wm title . \""
|
| 287 |
|
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BUILD_CONFIG_STATIC_WISH_ALIAS
|
| 288 |
|
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" v"
|
| 289 |
|
|
BUILD_CONFIG_RELEASE_VERSION
|
| 290 |
|
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"\"");
|
| 291 |
|
|
|
| 292 |
|
|
/* Output the introductory message to the console.
|
| 293 |
|
|
** The script called is generic and applies to both
|
| 294 |
|
|
** IjuScripter and IjuConsole.
|
| 295 |
|
|
*/
|
| 296 |
|
|
Tcl_GlobalEval(interp, BUILD_CONFIG_StartupMessageScript);
|
| 297 |
|
|
|
| 298 |
|
|
/*
|
| 299 |
|
|
* Invoke the script specified on the command line, if any.
|
| 300 |
|
|
*/
|
| 301 |
|
|
|
| 302 |
|
|
if (fileName != NULL) {
|
| 303 |
|
|
Tcl_ResetResult(interp);
|
| 304 |
|
|
code = Tcl_EvalFile(interp, fileName);
|
| 305 |
|
|
if (code != TCL_OK) {
|
| 306 |
|
|
/*
|
| 307 |
|
|
* The following statement guarantees that the errorInfo
|
| 308 |
|
|
* variable is set properly.
|
| 309 |
|
|
*/
|
| 310 |
|
|
|
| 311 |
|
|
Tcl_AddErrorInfo(interp, "");
|
| 312 |
|
|
TkpDisplayWarning(Tcl_GetVar(interp, "errorInfo",
|
| 313 |
|
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TCL_GLOBAL_ONLY), "Error in startup script");
|
| 314 |
|
|
Tcl_DeleteInterp(interp);
|
| 315 |
|
|
Tcl_Exit(1);
|
| 316 |
|
|
}
|
| 317 |
|
|
tsdPtr->tty = 0;
|
| 318 |
|
|
} else {
|
| 319 |
|
|
|
| 320 |
|
|
/*
|
| 321 |
|
|
* Evaluate the .rc file, if one has been specified.
|
| 322 |
|
|
*/
|
| 323 |
|
|
|
| 324 |
|
|
Tcl_SourceRCFile(interp);
|
| 325 |
|
|
|
| 326 |
|
|
/*
|
| 327 |
|
|
* Establish a channel handler for stdin.
|
| 328 |
|
|
*/
|
| 329 |
|
|
|
| 330 |
|
|
inChannel = Tcl_GetStdChannel(TCL_STDIN);
|
| 331 |
|
|
if (inChannel) {
|
| 332 |
|
|
Tcl_CreateChannelHandler(inChannel, TCL_READABLE, StdinProc,
|
| 333 |
|
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(ClientData) inChannel);
|
| 334 |
|
|
}
|
| 335 |
|
|
if (tsdPtr->tty) {
|
| 336 |
|
|
Prompt(interp, 0);
|
| 337 |
|
|
}
|
| 338 |
|
|
}
|
| 339 |
|
|
Tcl_DStringFree(&argString);
|
| 340 |
|
|
|
| 341 |
|
|
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
|
| 342 |
|
|
if (outChannel) {
|
| 343 |
|
|
Tcl_Flush(outChannel);
|
| 344 |
|
|
}
|
| 345 |
|
|
Tcl_DStringInit(&tsdPtr->command);
|
| 346 |
|
|
Tcl_DStringInit(&tsdPtr->line);
|
| 347 |
|
|
Tcl_ResetResult(interp);
|
| 348 |
|
|
|
| 349 |
|
|
/*
|
| 350 |
|
|
* Loop infinitely, waiting for commands to execute. When there
|
| 351 |
|
|
* are no windows left, Tk_MainLoop returns and we exit.
|
| 352 |
|
|
*/
|
| 353 |
|
|
|
| 354 |
|
|
Tk_MainLoop();
|
| 355 |
|
|
Tcl_DeleteInterp(interp);
|
| 356 |
|
|
Tcl_Exit(0);
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
/*
|
| 360 |
|
|
*----------------------------------------------------------------------
|
| 361 |
|
|
*
|
| 362 |
|
|
* StdinProc --
|
| 363 |
|
|
*
|
| 364 |
|
|
* This procedure is invoked by the event dispatcher whenever
|
| 365 |
|
|
* standard input becomes readable. It grabs the next line of
|
| 366 |
|
|
* input characters, adds them to a command being assembled, and
|
| 367 |
|
|
* executes the command if it's complete.
|
| 368 |
|
|
*
|
| 369 |
|
|
* Results:
|
| 370 |
|
|
* None.
|
| 371 |
|
|
*
|
| 372 |
|
|
* Side effects:
|
| 373 |
|
|
* Could be almost arbitrary, depending on the command that's
|
| 374 |
|
|
* typed.
|
| 375 |
|
|
*
|
| 376 |
|
|
*----------------------------------------------------------------------
|
| 377 |
|
|
*/
|
| 378 |
|
|
|
| 379 |
|
|
/* ARGSUSED */
|
| 380 |
|
|
static void
|
| 381 |
|
|
StdinProc(clientData, mask)
|
| 382 |
|
|
ClientData clientData; /* Not used. */
|
| 383 |
|
|
int mask; /* Not used. */
|
| 384 |
|
|
{
|
| 385 |
|
|
static int gotPartial = 0;
|
| 386 |
|
|
char *cmd;
|
| 387 |
|
|
int code, count;
|
| 388 |
|
|
Tcl_Channel chan = (Tcl_Channel) clientData;
|
| 389 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
| 390 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
| 391 |
|
|
Tcl_Interp *interp = tsdPtr->interp;
|
| 392 |
|
|
|
| 393 |
|
|
count = Tcl_Gets(chan, &tsdPtr->line);
|
| 394 |
|
|
|
| 395 |
|
|
if (count < 0) {
|
| 396 |
|
|
if (!gotPartial) {
|
| 397 |
|
|
if (tsdPtr->tty) {
|
| 398 |
|
|
Tcl_Exit(0);
|
| 399 |
|
|
} else {
|
| 400 |
|
|
Tcl_DeleteChannelHandler(chan, StdinProc, (ClientData) chan);
|
| 401 |
|
|
}
|
| 402 |
|
|
return;
|
| 403 |
|
|
}
|
| 404 |
|
|
}
|
| 405 |
|
|
|
| 406 |
|
|
(void) Tcl_DStringAppend(&tsdPtr->command, Tcl_DStringValue(
|
| 407 |
|
|
&tsdPtr->line), -1);
|
| 408 |
|
|
cmd = Tcl_DStringAppend(&tsdPtr->command, "\n", -1);
|
| 409 |
|
|
Tcl_DStringFree(&tsdPtr->line);
|
| 410 |
|
|
if (!Tcl_CommandComplete(cmd)) {
|
| 411 |
|
|
gotPartial = 1;
|
| 412 |
|
|
goto prompt;
|
| 413 |
|
|
}
|
| 414 |
|
|
gotPartial = 0;
|
| 415 |
|
|
|
| 416 |
|
|
/*
|
| 417 |
|
|
* Disable the stdin channel handler while evaluating the command;
|
| 418 |
|
|
* otherwise if the command re-enters the event loop we might
|
| 419 |
|
|
* process commands from stdin before the current command is
|
| 420 |
|
|
* finished. Among other things, this will trash the text of the
|
| 421 |
|
|
* command being evaluated.
|
| 422 |
|
|
*/
|
| 423 |
|
|
|
| 424 |
|
|
Tcl_CreateChannelHandler(chan, 0, StdinProc, (ClientData) chan);
|
| 425 |
|
|
code = Tcl_RecordAndEval(interp, cmd, TCL_EVAL_GLOBAL);
|
| 426 |
|
|
|
| 427 |
|
|
chan = Tcl_GetStdChannel(TCL_STDIN);
|
| 428 |
|
|
if (chan) {
|
| 429 |
|
|
Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc,
|
| 430 |
|
|
(ClientData) chan);
|
| 431 |
|
|
}
|
| 432 |
|
|
Tcl_DStringFree(&tsdPtr->command);
|
| 433 |
|
|
if (Tcl_GetStringResult(interp)[0] != '\0') {
|
| 434 |
|
|
if ((code != TCL_OK) || (tsdPtr->tty)) {
|
| 435 |
|
|
chan = Tcl_GetStdChannel(TCL_STDOUT);
|
| 436 |
|
|
if (chan) {
|
| 437 |
|
|
Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
|
| 438 |
|
|
Tcl_WriteChars(chan, "\n", 1);
|
| 439 |
|
|
}
|
| 440 |
|
|
}
|
| 441 |
|
|
}
|
| 442 |
|
|
|
| 443 |
|
|
/*
|
| 444 |
|
|
* Output a prompt.
|
| 445 |
|
|
*/
|
| 446 |
|
|
|
| 447 |
|
|
prompt:
|
| 448 |
|
|
if (tsdPtr->tty) {
|
| 449 |
|
|
Prompt(interp, gotPartial);
|
| 450 |
|
|
}
|
| 451 |
|
|
Tcl_ResetResult(interp);
|
| 452 |
|
|
}
|
| 453 |
|
|
|
| 454 |
|
|
/*
|
| 455 |
|
|
*----------------------------------------------------------------------
|
| 456 |
|
|
*
|
| 457 |
|
|
* Prompt --
|
| 458 |
|
|
*
|
| 459 |
|
|
* Issue a prompt on standard output, or invoke a script
|
| 460 |
|
|
* to issue the prompt.
|
| 461 |
|
|
*
|
| 462 |
|
|
* Results:
|
| 463 |
|
|
* None.
|
| 464 |
|
|
*
|
| 465 |
|
|
* Side effects:
|
| 466 |
|
|
* A prompt gets output, and a Tcl script may be evaluated
|
| 467 |
|
|
* in interp.
|
| 468 |
|
|
*
|
| 469 |
|
|
*----------------------------------------------------------------------
|
| 470 |
|
|
*/
|
| 471 |
|
|
|
| 472 |
|
|
static void
|
| 473 |
|
|
Prompt(interp, partial)
|
| 474 |
|
|
Tcl_Interp *interp; /* Interpreter to use for prompting. */
|
| 475 |
|
|
int partial; /* Non-zero means there already
|
| 476 |
|
|
* exists a partial command, so use
|
| 477 |
|
|
* the secondary prompt. */
|
| 478 |
|
|
{
|
| 479 |
|
|
char *promptCmd;
|
| 480 |
|
|
int code;
|
| 481 |
|
|
Tcl_Channel outChannel, errChannel;
|
| 482 |
|
|
|
| 483 |
|
|
promptCmd = Tcl_GetVar(interp,
|
| 484 |
|
|
partial ? "tcl_prompt2" : "tcl_prompt1", TCL_GLOBAL_ONLY);
|
| 485 |
|
|
if (promptCmd == NULL) {
|
| 486 |
|
|
defaultPrompt:
|
| 487 |
|
|
if (!partial) {
|
| 488 |
|
|
|
| 489 |
|
|
/*
|
| 490 |
|
|
* We must check that outChannel is a real channel - it
|
| 491 |
|
|
* is possible that someone has transferred stdout out of
|
| 492 |
|
|
* this interpreter with "interp transfer".
|
| 493 |
|
|
*/
|
| 494 |
|
|
|
| 495 |
|
|
outChannel = Tcl_GetChannel(interp, "stdout", NULL);
|
| 496 |
|
|
if (outChannel != (Tcl_Channel) NULL) {
|
| 497 |
|
|
Tcl_WriteChars(outChannel, "% ", 2);
|
| 498 |
|
|
}
|
| 499 |
|
|
}
|
| 500 |
|
|
} else {
|
| 501 |
|
|
code = Tcl_Eval(interp, promptCmd);
|
| 502 |
|
|
if (code != TCL_OK) {
|
| 503 |
|
|
Tcl_AddErrorInfo(interp,
|
| 504 |
|
|
"\n (script that generates prompt)");
|
| 505 |
|
|
/*
|
| 506 |
|
|
* We must check that errChannel is a real channel - it
|
| 507 |
|
|
* is possible that someone has transferred stderr out of
|
| 508 |
|
|
* this interpreter with "interp transfer".
|
| 509 |
|
|
*/
|
| 510 |
|
|
|
| 511 |
|
|
errChannel = Tcl_GetChannel(interp, "stderr", NULL);
|
| 512 |
|
|
if (errChannel != (Tcl_Channel) NULL) {
|
| 513 |
|
|
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
|
| 514 |
|
|
Tcl_WriteChars(errChannel, "\n", 1);
|
| 515 |
|
|
}
|
| 516 |
|
|
goto defaultPrompt;
|
| 517 |
|
|
}
|
| 518 |
|
|
}
|
| 519 |
|
|
outChannel = Tcl_GetChannel(interp, "stdout", NULL);
|
| 520 |
|
|
if (outChannel != (Tcl_Channel) NULL) {
|
| 521 |
|
|
Tcl_Flush(outChannel);
|
| 522 |
|
|
}
|
| 523 |
|
|
}
|
| 524 |
|
|
|
| 525 |
|
|
|
| 526 |
|
|
/* $History: tkMain.c $
|
| 527 |
|
|
*
|
| 528 |
|
|
* ***************** Version 1 *****************
|
| 529 |
|
|
* User: Dtashley Date: 1/02/01 Time: 3:24a
|
| 530 |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
| 531 |
|
|
* Initial check-in.
|
| 532 |
|
|
*/
|
| 533 |
|
|
|
| 534 |
|
|
/* End of TKMAIN.C */ |
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| 
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