/*
* 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) 1996-1997 by Sun Microsystems, Inc.
* Copyright (c) 1998-1999 by Scriptics Corporation.
* Copyright (c) 2000-2002 Jean-Claude Wippler <jcw@equi4.com>
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id$
*/
#ifdef KIT_INCLUDES_TK
# include <tk.h>
#endif /* KIT_INCLUDES_TK */
#include <tcl.h>
#ifdef _WIN32
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# undef WIN32_LEAN_AND_MEAN
#endif /* _WIN32 */
#ifndef MB_TASKMODAL
# define MB_TASKMODAL 0
#endif /* MB_TASKMODAL */
#include "tclInt.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
/* For dladdr() and Dl_info */
#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif
#if defined(HAVE_TCL_GETENCODINGNAMEFROMENVIRONMENT) && defined(HAVE_TCL_SETSYSTEMENCODING)
# define TCLKIT_CAN_SET_ENCODING 1
#endif
#if 10 * TCL_MAJOR_VERSION + TCL_MINOR_VERSION < 85
# define TCLKIT_REQUIRE_TCLEXECUTABLENAME 1
#endif
#if 10 * TCL_MAJOR_VERSION + TCL_MINOR_VERSION < 85
# define KIT_INCLUDES_PWB 1
#endif
#if 10 * TCL_MAJOR_VERSION + TCL_MINOR_VERSION < 86
# define KIT_INCLUDES_ZLIB 1
#endif
#include "kitInit-libs.h"
#ifdef KIT_INCLUDES_MK4TCL
Tcl_AppInitProc Mk4tcl_Init;
#endif
Tcl_AppInitProc Vfs_Init, Rechan_Init;
#ifdef KIT_INCLUDES_PWB
Tcl_AppInitProc Pwb_Init;
#endif
#ifdef KIT_INCLUDES_ZLIB
Tcl_AppInitProc Zlib_Init;
#endif
#ifdef KIT_STORAGE_CVFS
Tcl_AppInitProc Cvfs_data_tcl_Init;
#endif
#ifdef TCL_THREADS
Tcl_AppInitProc Thread_Init;
#endif
#ifdef _WIN32
Tcl_AppInitProc Dde_Init, Registry_Init;
#endif
#ifdef TCLKIT_DLL
# define TCLKIT_MOUNTPOINT "/.KITDLL_TCL"
# define TCLKIT_VFSSOURCE "$::tclKitFilename"
#else
# define TCLKIT_MOUNTPOINT "[info nameofexecutable]"
# define TCLKIT_VFSSOURCE "[info nameofexecutable]"
#endif /* TCLKIT_DLL */
#ifndef TCLKIT_DLL
# ifdef HAVE_ACCEPTABLE_DLADDR
# ifdef KITSH_NEED_WINMAIN
# ifdef _WIN32_WCE
int wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow);
# else
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow);
# endif /* _WIN32_WCE */
# endif /* KITSH_NEED_WINMAIN */
int main(int argc, char **argv);
# endif /* HAVE_ACCEPTABLE_DLADDR */
#endif /* !TCLKIT_DLL */
#ifdef TCLKIT_DLL
void __attribute__((constructor)) _Tclkit_Init(void);
#else
static void _Tclkit_Init(void);
#endif
#ifdef TCLKIT_REQUIRE_TCLEXECUTABLENAME
char *tclExecutableName;
#endif
/*
* Attempt to load a "boot.tcl" entry from the embedded MetaKit file.
*/
/*
* This Tcl code is invoked whenever Tcl_Init() is called on an
* interpreter. It should mount up the VFS and make everything ready for
* that interpreter to do its job.
*/
static char *preInitCmd =
#if defined(_WIN32_WCE) && !defined(TCLKIT_DLL)
/* silly hack to get wince port to launch, some sort of std{in,out,err} problem */
"open /kitout.txt a; open /kitout.txt a; open /kitout.txt a\n"
/* this too seems to be needed on wince - it appears to be related to the above */
"catch {rename source ::tcl::source}\n"
"proc source file {\n"
"set old [info script]\n"
"info script $file\n"
"set fid [open $file]\n"
"set data [read $fid]\n"
"close $fid\n"
"set code [catch {uplevel 1 $data} res]\n"
"info script $old\n"
"if {$code == 2} { set code 0 }\n"
"return -code $code $res\n"
"}\n"
#endif /* _WIN32_WCE && !TCLKIT_DLL */
"proc tclKitInit {} {\n"
"rename tclKitInit {}\n"
"catch { load {} vfs }\n"
#ifdef KIT_INCLUDES_ZLIB
"catch { load {} zlib }\n"
#endif
#ifdef KIT_INCLUDES_MK4TCL
"catch { load {} Mk4tcl }\n"
#endif
"load {} tclkit::init\n"
"::tclkit::init::initInterp\n"
"rename ::tclkit::init::initInterp {}\n"
"set bootfile [file join " TCLKIT_MOUNTPOINT " boot.tcl]\n"
"if {[file exists $bootfile]} {\n"
"catch {\n"
"set f [open $bootfile]\n"
"set s [read $f]\n"
"close $f\n"
"}\n"
"} else {\n"
"set ::TCLKIT_INITVFS 1\n"
"}\n"
#ifdef KIT_STORAGE_MK4
"set ::tclKitStorage \"mk4\"\n"
"if {![info exists s]} {\n"
"mk::file open exe " TCLKIT_VFSSOURCE " -readonly\n"
"set n [mk::select exe.dirs!0.files name boot.tcl]\n"
"if {$n != \"\"} {\n"
"set s [mk::get exe.dirs!0.files!$n contents]\n"
"if {![string length $s]} { error \"empty boot.tcl\" }\n"
"catch {load {} zlib}\n"
"if {[mk::get exe.dirs!0.files!$n size] != [string length $s]} {\n"
"set s [zlib decompress $s]\n"
"}\n"
"}\n"
"}\n"
#endif /* KIT_STORAGE_MK4 */
#ifdef KIT_STORAGE_ZIP
"set ::tclKitStorage \"zip\"\n"
"if {![info exists s]} {\n"
# include "zipvfs.tcl.h"
"catch {\n"
"set ::tclKitStorage_fd [::zip::open " TCLKIT_VFSSOURCE "]\n"
"::zip::stat $::tclKitStorage_fd boot.tcl sb\n"
"seek $::tclKitStorage_fd $sb(ino)\n"
"::zip::Data $::tclKitStorage_fd sb s\n"
"}\n"
"}\n"
#endif /* KIT_STORAGE_ZIP */
#ifdef KIT_STORAGE_CVFS
"set ::tclKitStorage \"cvfs\"\n"
"load {} rechan\n"
"load {} cvfs_data_tcl\n"
#include "cvfs.tcl.h"
"if {![info exists s]} {\n"
"catch {\n"
"set s [::vfs::cvfs::data::getData tcl boot.tcl]\n"
"}\n"
"}\n"
#endif /* KIT_STORAGE_CVFS */
"if {![info exists s]} {\n"
"set s \"\"\n"
"}\n"
#ifdef TCLKIT_DLL
"set ::TCLKIT_TYPE \"kitdll\"\n"
#else
"set ::TCLKIT_TYPE \"tclkit\"\n"
#endif /* TCLKIT_DLL */
"set ::TCLKIT_MOUNTPOINT " TCLKIT_MOUNTPOINT "\n"
"set ::TCLKIT_VFSSOURCE " TCLKIT_VFSSOURCE "\n"
"set ::TCLKIT_MOUNTPOINT_VAR {" TCLKIT_MOUNTPOINT "}\n"
"set ::TCLKIT_VFSSOURCE_VAR {" TCLKIT_VFSSOURCE "}\n"
"uplevel #0 $s\n"
#if defined(KIT_INCLUDES_TK) && defined(KIT_TK_VERSION)
"package ifneeded Tk " KIT_TK_VERSION " {\n"
"load {} Tk\n"
"}\n"
#endif
#ifdef _WIN32
"catch {load {} dde}\n"
"catch {load {} registry}\n"
#endif /* _WIN32 */
"return 0\n"
"}\n"
"tclKitInit";
static const char initScript[] =
"if {[file isfile [file join [info nameofexe] main.tcl]]} {\n"
"if {[info commands console] != {}} { console hide }\n"
"set tcl_interactive 0\n"
"incr argc\n"
"set argv [linsert $argv 0 $argv0]\n"
"set argv0 [file join [info nameofexe] main.tcl]\n"
"} else continue\n";
/* SetExecName --
Hack to get around Tcl bug 1224888.
*/
static void SetExecName(Tcl_Interp *interp, const char *path) {
#ifdef TCLKIT_REQUIRE_TCLEXECUTABLENAME
tclExecutableName = strdup(path);
#endif
Tcl_FindExecutable(path);
return;
}
static void FindAndSetExecName(Tcl_Interp *interp) {
int len = 0;
Tcl_Obj *execNameObj;
Tcl_Obj *lobjv[1];
#ifdef HAVE_READLINK
ssize_t readlink_ret;
char exe_buf[4096];
#endif /* HAVE_READLINK */
#ifdef HAVE_ACCEPTABLE_DLADDR
Dl_info syminfo;
int dladdr_ret;
#endif /* HAVE_ACCEPTABLE_DLADDR */
#ifdef HAVE_READLINK
if (Tcl_GetNameOfExecutable() == NULL) {
readlink_ret = readlink("/proc/self/exe", exe_buf, sizeof(exe_buf) - 1);
if (readlink_ret > 0 && readlink_ret < (sizeof(exe_buf) - 1)) {
exe_buf[readlink_ret] = '\0';
SetExecName(interp, exe_buf);
return;
}
}
if (Tcl_GetNameOfExecutable() == NULL) {
readlink_ret = readlink("/proc/curproc/file", exe_buf, sizeof(exe_buf) - 1);
if (readlink_ret > 0 && readlink_ret < (sizeof(exe_buf) - 1)) {
exe_buf[readlink_ret] = '\0';
if (strcmp(exe_buf, "unknown") != 0) {
SetExecName(interp, exe_buf);
return;
}
}
}
#endif /* HAVE_READLINK */
#ifdef HAVE_ACCEPTABLE_DLADDR
# ifndef TCLKIT_DLL
if (Tcl_GetNameOfExecutable() == NULL) {
dladdr_ret = dladdr(&SetExecName, &syminfo);
if (dladdr_ret != 0) {
SetExecName(interp, syminfo.dli_fname);
return;
}
}
# ifdef KITSH_NEED_WINMAIN
if (Tcl_GetNameOfExecutable() == NULL) {
# ifdef _WIN32_WCE
dladdr_ret = dladdr(&WinMain, &syminfo);
# else
dladdr_ret = dladdr(&wWinMain, &syminfo);
# endif /* _WIN32_WCE */
if (dladdr_ret != 0) {
SetExecName(interp, syminfo.dli_fname);
return;
}
}
# endif /* KITSH_NEED_WINMAIN */
if (Tcl_GetNameOfExecutable() == NULL) {
dladdr_ret = dladdr(&main, &syminfo);
if (dladdr_ret != 0) {
SetExecName(interp, syminfo.dli_fname);
return;
}
}
# endif /* !TCLKIT_DLL */
#endif /* HAVE_ACCEPTABLE_DLADDR */
if (Tcl_GetNameOfExecutable() == NULL) {
lobjv[0] = Tcl_GetVar2Ex(interp, "argv0", NULL, TCL_GLOBAL_ONLY);
execNameObj = Tcl_FSJoinToPath(Tcl_FSGetCwd(interp), 1, lobjv);
SetExecName(interp, Tcl_GetStringFromObj(execNameObj, &len));
return;
}
return;
}
static void _Tclkit_Generic_Init(void) {
#ifdef KIT_INCLUDES_MK4TCL
Tcl_StaticPackage(0, "Mk4tcl", Mk4tcl_Init, NULL);
#endif
#ifdef KIT_INCLUDES_PWB
Tcl_StaticPackage(0, "pwb", Pwb_Init, NULL);
#endif
Tcl_StaticPackage(0, "rechan", Rechan_Init, NULL);
Tcl_StaticPackage(0, "vfs", Vfs_Init, NULL);
#ifdef KIT_INCLUDES_ZLIB
Tcl_StaticPackage(0, "zlib", Zlib_Init, NULL);
#endif
#ifdef KIT_STORAGE_CVFS
Tcl_StaticPackage(0, "cvfs_data_tcl", Cvfs_data_tcl_Init, NULL);
#endif
#ifdef TCL_THREADS
Tcl_StaticPackage(0, "Thread", Thread_Init, NULL);
#endif
#ifdef _WIN32
Tcl_StaticPackage(0, "dde", Dde_Init, NULL);
Tcl_StaticPackage(0, "registry", Registry_Init, NULL);
#endif
#ifdef KIT_INCLUDES_TK
Tcl_StaticPackage(0, "Tk", Tk_Init, Tk_SafeInit);
#endif
_Tclkit_GenericLib_Init();
TclSetPreInitScript(preInitCmd);
return;
}
static void _Tclkit_Interp_Init(Tcl_Interp *interp) {
#ifdef TCLKIT_CAN_SET_ENCODING
Tcl_DString encodingName;
#endif /* TCLKIT_CAN_SET_ENCODING */
#ifndef TCLKIT_DLL
/* the tcl_rcFileName variable only exists in the initial interpreter */
# ifdef _WIN32
Tcl_SetVar(interp, "tcl_rcFileName", "~/tclkitrc.tcl", TCL_GLOBAL_ONLY);
# else
Tcl_SetVar(interp, "tcl_rcFileName", "~/.tclkitrc", TCL_GLOBAL_ONLY);
# endif /* _WIN32 */
#endif /* !TCLKIT_DLL */
#ifdef TCLKIT_CAN_SET_ENCODING
/* Set the encoding from the Environment */
Tcl_GetEncodingNameFromEnvironment(&encodingName);
Tcl_SetSystemEncoding(NULL, Tcl_DStringValue(&encodingName));
Tcl_SetVar(interp, "tclkit_system_encoding", Tcl_DStringValue(&encodingName), 0);
Tcl_DStringFree(&encodingName);
#endif /* TCLKIT_CAN_SET_ENCODING */
/* Hack to get around Tcl bug 1224888. This must be run here and
* in LibraryPathObjCmd because this information is needed both
* before and after that command is run. */
FindAndSetExecName(interp);
#if defined(_WIN32) && defined(KIT_INCLUDES_TK)
/* Every interpreter needs this done */
Tk_InitConsoleChannels(interp);
#endif /* _WIN32 and KIT_INCLUDES_TK */
return;
}
#ifndef TCLKIT_DLL
int TclKit_AppInit(Tcl_Interp *interp) {
#ifdef KIT_INCLUDES_TK
# ifdef _WIN32
# ifndef _WIN32_WCE
char msgBuf[2049];
# endif /* !_WIN32_WCE */
# endif /* _WIN32 */
#endif /* KIT_INCLUDES_TK */
/* Perform common initialization */
_Tclkit_Init();
if (Tcl_Init(interp) == TCL_ERROR) {
goto error;
}
#ifdef KIT_INCLUDES_TK
# ifdef _WIN32
if (Tk_Init(interp) == TCL_ERROR) {
goto error;
}
if (Tk_CreateConsoleWindow(interp) == TCL_ERROR) {
goto error;
}
# endif /* _WIN32 */
#endif /* KIT_INCLUDES_TK */
/* messy because TclSetStartupScriptPath is called slightly too late */
if (Tcl_Eval(interp, initScript) == TCL_OK) {
Tcl_Obj* path;
#ifdef HAVE_TCLSETSTARTUPSCRIPTPATH
path = TclGetStartupScriptPath();
TclSetStartupScriptPath(Tcl_GetObjResult(interp));
#elif defined(HAVE_TCL_SETSTARTUPSCRIPT)
path = Tcl_GetStartupScript(NULL);
Tcl_SetStartupScript(Tcl_GetObjResult(interp), NULL);
#endif
if (path == NULL) {
Tcl_Eval(interp, "incr argc -1; set argv [lrange $argv 1 end]");
}
}
Tcl_SetVar(interp, "errorInfo", "", TCL_GLOBAL_ONLY);
Tcl_ResetResult(interp);
return TCL_OK;
error:
#ifdef KIT_INCLUDES_TK
# ifdef _WIN32
MessageBeep(MB_ICONEXCLAMATION);
# ifndef _WIN32_WCE
snprintf(msgBuf, sizeof(msgBuf),
"A critical error has occurred. Please report this to the Tclkit vendor.\nInterpreter Returned: %s\nError Info: %s",
Tcl_GetStringResult(interp),
Tcl_GetVar(interp, "errorInfo", TCL_GLOBAL_ONLY));
MessageBox(NULL, msgBuf, "Error in TclKit",
MB_ICONSTOP | MB_OK | MB_TASKMODAL | MB_SETFOREGROUND);
ExitProcess(1);
# endif /* !_WIN32_WCE */
/* we won't reach this, but we need the return */
# endif /* _WIN32 */
#endif /* KIT_INCLUDES_TK */
return TCL_ERROR;
}
#endif /* !TCLKIT_DLL */
#ifdef TCLKIT_DLL
# ifdef HAVE_ACCEPTABLE_DLADDR
/* Symbol to resolve against dladdr() */
static void _tclkit_dummy_func(void) {
return;
}
# endif /* HAVE_ACCEPTABLE_DLADDR */
/*
* This function will return a pathname we can open() to treat as a VFS,
* hopefully
*/
static char *find_tclkit_dll_path(void) {
#ifdef HAVE_ACCEPTABLE_DLADDR
Dl_info syminfo;
int dladdr_ret;
#endif /* HAVE_ACCEPTABLE_DLADDR */
#ifdef _WIN32
TCHAR modulename[8192];
DWORD gmfn_ret;
#endif /* _WIN32 */
#ifdef HAVE_ACCEPTABLE_DLADDR
dladdr_ret = dladdr(&_tclkit_dummy_func, &syminfo);
if (dladdr_ret != 0) {
if (syminfo.dli_fname && syminfo.dli_fname[0] != '\0') {
return(strdup(syminfo.dli_fname));
}
}
#endif /* HAVE_ACCEPTABLE_DLADDR */
#ifdef _WIN32
gmfn_ret = GetModuleFileName(TclWinGetTclInstance(), modulename, sizeof(modulename) / sizeof(modulename[0]) - 1);
if (gmfn_ret != 0) {
return(strdup(modulename));
}
#endif /* _WIN32 */
return(NULL);
}
#else
# define find_tclkit_dll_path() NULL
#endif
/*
* This function exists to allow C code to initialize a particular
* interpreter.
*/
static int tclkit_init_initinterp(ClientData cd, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) {
char *kitdll_path;
kitdll_path = find_tclkit_dll_path();
if (kitdll_path != NULL) {
Tcl_SetVar(interp, "tclKitFilename", kitdll_path, TCL_GLOBAL_ONLY);
free(kitdll_path);
}
_Tclkit_Interp_Init(interp);
return(TCL_OK);
}
/*
* Create a package for initializing a particular interpreter. This is
* our hook to have Tcl invoke C commands when creating an interpreter.
* The preInitCmd will load the package in the new interpreter and invoke
* this function.
*/
int Tclkit_init_Init(Tcl_Interp *interp) {
Tcl_Command tclCreatComm_ret;
int tclPkgProv_ret;
tclCreatComm_ret = Tcl_CreateObjCommand(interp, "::tclkit::init::initInterp", tclkit_init_initinterp, NULL, NULL);
if (!tclCreatComm_ret) {
return(TCL_ERROR);
}
tclPkgProv_ret = Tcl_PkgProvide(interp, "tclkit::init", "1.0");
return(tclPkgProv_ret);
}
/*
* Initialize the Tcl system when we are loaded, that way Tcl functions
* are ready to be used when invoked.
*/
#ifdef TCLKIT_DLL
void __attribute__((constructor)) _Tclkit_Init(void) {
#else
static void _Tclkit_Init(void) {
#endif
Tcl_StaticPackage(0, "tclkit::init", Tclkit_init_Init, NULL);
_Tclkit_Generic_Init();
return;
}
Documentation