tclWinInit.c
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- /*
- * tclWinInit.c --
- *
- * Contains the Windows-specific interpreter initialization functions.
- *
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- * Copyright (c) 1998-1999 by Scriptics Corporation.
- * All rights reserved.
- *
- * RCS: @(#) $Id: tclWinInit.c,v 1.40.2.6 2005/10/23 22:01:31 msofer Exp $
- */
- #include "tclWinInt.h"
- #include <winnt.h>
- #include <winbase.h>
- #include <lmcons.h>
- /*
- * The following declaration is a workaround for some Microsoft brain damage.
- * The SYSTEM_INFO structure is different in various releases, even though the
- * layout is the same. So we overlay our own structure on top of it so we
- * can access the interesting slots in a uniform way.
- */
- typedef struct {
- WORD wProcessorArchitecture;
- WORD wReserved;
- } OemId;
- /*
- * The following macros are missing from some versions of winnt.h.
- */
- #ifndef PROCESSOR_ARCHITECTURE_INTEL
- #define PROCESSOR_ARCHITECTURE_INTEL 0
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_MIPS
- #define PROCESSOR_ARCHITECTURE_MIPS 1
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_ALPHA
- #define PROCESSOR_ARCHITECTURE_ALPHA 2
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_PPC
- #define PROCESSOR_ARCHITECTURE_PPC 3
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_SHX
- #define PROCESSOR_ARCHITECTURE_SHX 4
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_ARM
- #define PROCESSOR_ARCHITECTURE_ARM 5
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_IA64
- #define PROCESSOR_ARCHITECTURE_IA64 6
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_ALPHA64
- #define PROCESSOR_ARCHITECTURE_ALPHA64 7
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_MSIL
- #define PROCESSOR_ARCHITECTURE_MSIL 8
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_AMD64
- #define PROCESSOR_ARCHITECTURE_AMD64 9
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_IA32_ON_WIN64
- #define PROCESSOR_ARCHITECTURE_IA32_ON_WIN64 10
- #endif
- #ifndef PROCESSOR_ARCHITECTURE_UNKNOWN
- #define PROCESSOR_ARCHITECTURE_UNKNOWN 0xFFFF
- #endif
- /*
- * The following arrays contain the human readable strings for the Windows
- * platform and processor values.
- */
- #define NUMPLATFORMS 4
- static char* platforms[NUMPLATFORMS] = {
- "Win32s", "Windows 95", "Windows NT", "Windows CE"
- };
- #define NUMPROCESSORS 11
- static char* processors[NUMPROCESSORS] = {
- "intel", "mips", "alpha", "ppc", "shx", "arm", "ia64", "alpha64", "msil",
- "amd64", "ia32_on_win64"
- };
- /* Used to store the encoding used for binary files */
- static Tcl_Encoding binaryEncoding = NULL;
- /* Has the basic library path encoding issue been fixed */
- static int libraryPathEncodingFixed = 0;
- /*
- * The Init script (common to Windows and Unix platforms) is
- * defined in tkInitScript.h
- */
- #include "tclInitScript.h"
- static void AppendEnvironment(Tcl_Obj *listPtr, CONST char *lib);
- static void AppendDllPath(Tcl_Obj *listPtr, HMODULE hModule,
- CONST char *lib);
- static int ToUtf(CONST WCHAR *wSrc, char *dst);
- /*
- *---------------------------------------------------------------------------
- *
- * TclpInitPlatform --
- *
- * Initialize all the platform-dependant things like signals and
- * floating-point error handling.
- *
- * Called at process initialization time.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
- void
- TclpInitPlatform()
- {
- tclPlatform = TCL_PLATFORM_WINDOWS;
- /*
- * The following code stops Windows 3.X and Windows NT 3.51 from
- * automatically putting up Sharing Violation dialogs, e.g, when
- * someone tries to access a file that is locked or a drive with no
- * disk in it. Tcl already returns the appropriate error to the
- * caller, and they can decide to put up their own dialog in response
- * to that failure.
- *
- * Under 95 and NT 4.0, this is a NOOP because the system doesn't
- * automatically put up dialogs when the above operations fail.
- */
- SetErrorMode(SetErrorMode(0) | SEM_FAILCRITICALERRORS);
- #ifdef STATIC_BUILD
- /*
- * If we are in a statically linked executable, then we need to
- * explicitly initialize the Windows function tables here since
- * DllMain() will not be invoked.
- */
- TclWinInit(GetModuleHandle(NULL));
- #endif
- }
- /*
- *---------------------------------------------------------------------------
- *
- * TclpInitLibraryPath --
- *
- * Initialize the library path at startup.
- *
- * This call sets the library path to strings in UTF-8. Any
- * pre-existing library path information is assumed to have been
- * in the native multibyte encoding.
- *
- * Called at process initialization time.
- *
- * Results:
- * Return 0, indicating that the UTF is clean.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
- int
- TclpInitLibraryPath(path)
- CONST char *path; /* Potentially dirty UTF string that is */
- /* the path to the executable name. */
- {
- #define LIBRARY_SIZE 32
- Tcl_Obj *pathPtr, *objPtr;
- CONST char *str;
- Tcl_DString ds;
- int pathc;
- CONST char **pathv;
- char installLib[LIBRARY_SIZE], developLib[LIBRARY_SIZE];
- Tcl_DStringInit(&ds);
- pathPtr = Tcl_NewObj();
- /*
- * Initialize the substrings used when locating an executable. The
- * installLib variable computes the path as though the executable
- * is installed. The developLib computes the path as though the
- * executable is run from a develpment directory.
- */
- sprintf(installLib, "lib/tcl%s", TCL_VERSION);
- sprintf(developLib, "tcl%s/library", TCL_PATCH_LEVEL);
- /*
- * Look for the library relative to default encoding dir.
- */
- str = Tcl_GetDefaultEncodingDir();
- if ((str != NULL) && (str[0] != ' ')) {
- objPtr = Tcl_NewStringObj(str, -1);
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- }
- /*
- * Look for the library relative to the TCL_LIBRARY env variable.
- * If the last dirname in the TCL_LIBRARY path does not match the
- * last dirname in the installLib variable, use the last dir name
- * of installLib in addition to the orginal TCL_LIBRARY path.
- */
- AppendEnvironment(pathPtr, installLib);
- /*
- * Look for the library relative to the DLL. Only use the installLib
- * because in practice, the DLL is always installed.
- */
- AppendDllPath(pathPtr, TclWinGetTclInstance(), installLib);
-
- /*
- * Look for the library relative to the executable. This algorithm
- * should be the same as the one in the tcl_findLibrary procedure.
- *
- * This code looks in the following directories:
- *
- * <bindir>/../<installLib>
- * (e.g. /usr/local/bin/../lib/tcl8.4)
- * <bindir>/../../<installLib>
- * (e.g. /usr/local/TclPro/solaris-sparc/bin/../../lib/tcl8.4)
- * <bindir>/../library
- * (e.g. /usr/src/tcl8.4.0/unix/../library)
- * <bindir>/../../library
- * (e.g. /usr/src/tcl8.4.0/unix/solaris-sparc/../../library)
- * <bindir>/../../<developLib>
- * (e.g. /usr/src/tcl8.4.0/unix/../../tcl8.4.0/library)
- * <bindir>/../../../<developLib>
- * (e.g. /usr/src/tcl8.4.0/unix/solaris-sparc/../../../tcl8.4.0/library)
- */
-
- /*
- * The variable path holds an absolute path. Take care not to
- * overwrite pathv[0] since that might produce a relative path.
- */
- if (path != NULL) {
- int i, origc;
- CONST char **origv;
- Tcl_SplitPath(path, &origc, &origv);
- pathc = 0;
- pathv = (CONST char **) ckalloc((unsigned int)(origc * sizeof(char *)));
- for (i=0; i< origc; i++) {
- if (origv[i][0] == '.') {
- if (strcmp(origv[i], ".") == 0) {
- /* do nothing */
- } else if (strcmp(origv[i], "..") == 0) {
- pathc--;
- } else {
- pathv[pathc++] = origv[i];
- }
- } else {
- pathv[pathc++] = origv[i];
- }
- }
- if (pathc > 2) {
- str = pathv[pathc - 2];
- pathv[pathc - 2] = installLib;
- path = Tcl_JoinPath(pathc - 1, pathv, &ds);
- pathv[pathc - 2] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- if (pathc > 3) {
- str = pathv[pathc - 3];
- pathv[pathc - 3] = installLib;
- path = Tcl_JoinPath(pathc - 2, pathv, &ds);
- pathv[pathc - 3] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- if (pathc > 2) {
- str = pathv[pathc - 2];
- pathv[pathc - 2] = "library";
- path = Tcl_JoinPath(pathc - 1, pathv, &ds);
- pathv[pathc - 2] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- if (pathc > 3) {
- str = pathv[pathc - 3];
- pathv[pathc - 3] = "library";
- path = Tcl_JoinPath(pathc - 2, pathv, &ds);
- pathv[pathc - 3] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- if (pathc > 3) {
- str = pathv[pathc - 3];
- pathv[pathc - 3] = developLib;
- path = Tcl_JoinPath(pathc - 2, pathv, &ds);
- pathv[pathc - 3] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- if (pathc > 4) {
- str = pathv[pathc - 4];
- pathv[pathc - 4] = developLib;
- path = Tcl_JoinPath(pathc - 3, pathv, &ds);
- pathv[pathc - 4] = str;
- objPtr = Tcl_NewStringObj(path, Tcl_DStringLength(&ds));
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- Tcl_DStringFree(&ds);
- }
- ckfree((char *) origv);
- ckfree((char *) pathv);
- }
- TclSetLibraryPath(pathPtr);
- return 0; /* 0 indicates that pathPtr is clean (true) utf */
- }
- /*
- *---------------------------------------------------------------------------
- *
- * AppendEnvironment --
- *
- * Append the value of the TCL_LIBRARY environment variable onto the
- * path pointer. If the env variable points to another version of
- * tcl (e.g. "tcl7.6") also append the path to this version (e.g.,
- * "tcl7.6/../tcl8.2")
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
- static void
- AppendEnvironment(
- Tcl_Obj *pathPtr,
- CONST char *lib)
- {
- int pathc;
- WCHAR wBuf[MAX_PATH];
- char buf[MAX_PATH * TCL_UTF_MAX];
- Tcl_Obj *objPtr;
- Tcl_DString ds;
- CONST char **pathv;
- char *shortlib;
- /*
- * The shortlib value needs to be the tail component of the
- * lib path. For example, "lib/tcl8.4" -> "tcl8.4" while
- * "usr/share/tcl8.5" -> "tcl8.5".
- */
- for (shortlib = (char *) (lib + strlen(lib) - 1); shortlib > lib ; shortlib--) {
- if (*shortlib == '/') {
- if (shortlib == (lib + strlen(lib) - 1)) {
- Tcl_Panic("last character in lib cannot be '/'");
- }
- shortlib++;
- break;
- }
- }
- if (shortlib == lib) {
- Tcl_Panic("no '/' character found in lib");
- }
- /*
- * The "L" preceeding the TCL_LIBRARY string is used to tell VC++
- * that this is a unicode string.
- */
-
- if (GetEnvironmentVariableW(L"TCL_LIBRARY", wBuf, MAX_PATH) == 0) {
- buf[0] = ' ';
- GetEnvironmentVariableA("TCL_LIBRARY", buf, MAX_PATH);
- } else {
- ToUtf(wBuf, buf);
- }
- if (buf[0] != ' ') {
- objPtr = Tcl_NewStringObj(buf, -1);
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- TclWinNoBackslash(buf);
- Tcl_SplitPath(buf, &pathc, &pathv);
- /*
- * The lstrcmpi() will work even if pathv[pathc - 1] is random
- * UTF-8 chars because I know shortlib is ascii.
- */
- if ((pathc > 0) && (lstrcmpiA(shortlib, pathv[pathc - 1]) != 0)) {
- CONST char *str;
- /*
- * TCL_LIBRARY is set but refers to a different tcl
- * installation than the current version. Try fiddling with the
- * specified directory to make it refer to this installation by
- * removing the old "tclX.Y" and substituting the current
- * version string.
- */
-
- pathv[pathc - 1] = shortlib;
- Tcl_DStringInit(&ds);
- str = Tcl_JoinPath(pathc, pathv, &ds);
- objPtr = Tcl_NewStringObj(str, Tcl_DStringLength(&ds));
- Tcl_DStringFree(&ds);
- } else {
- objPtr = Tcl_NewStringObj(buf, -1);
- }
- Tcl_ListObjAppendElement(NULL, pathPtr, objPtr);
- ckfree((char *) pathv);
- }
- }
- /*
- *---------------------------------------------------------------------------
- *
- * AppendDllPath --
- *
- * Append a path onto the path pointer that tries to locate the Tcl
- * library relative to the location of the Tcl DLL.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
- static void
- AppendDllPath(
- Tcl_Obj *pathPtr,
- HMODULE hModule,
- CONST char *lib)
- {
- WCHAR wName[MAX_PATH + LIBRARY_SIZE];
- char name[(MAX_PATH + LIBRARY_SIZE) * TCL_UTF_MAX];
- if (GetModuleFileNameW(hModule, wName, MAX_PATH) == 0) {
- GetModuleFileNameA(hModule, name, MAX_PATH);
- } else {
- ToUtf(wName, name);
- }
- if (lib != NULL) {
- char *end, *p;
- end = strrchr(name, '\');
- *end = ' ';
- p = strrchr(name, '\');
- if (p != NULL) {
- end = p;
- }
- *end = '\';
- strcpy(end + 1, lib);
- }
- TclWinNoBackslash(name);
- Tcl_ListObjAppendElement(NULL, pathPtr, Tcl_NewStringObj(name, -1));
- }
- /*
- *---------------------------------------------------------------------------
- *
- * ToUtf --
- *
- * Convert a char string to a UTF string.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
- static int
- ToUtf(
- CONST WCHAR *wSrc,
- char *dst)
- {
- char *start;
- start = dst;
- while (*wSrc != ' ') {
- dst += Tcl_UniCharToUtf(*wSrc, dst);
- wSrc++;
- }
- *dst = ' ';
- return (int) (dst - start);
- }
- /*
- *---------------------------------------------------------------------------
- *
- * TclWinEncodingsCleanup --
- *
- * Reset information to its original state in finalization to
- * allow for reinitialization to be possible. This must not
- * be called until after the filesystem has been finalised, or
- * exit crashes may occur when using virtual filesystems.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Static information reset to startup state.
- *
- *---------------------------------------------------------------------------
- */
- void
- TclWinEncodingsCleanup()
- {
- TclWinResetInterfaceEncodings();
- libraryPathEncodingFixed = 0;
- if (binaryEncoding != NULL) {
- Tcl_FreeEncoding(binaryEncoding);
- binaryEncoding = NULL;
- }
- }
- /*
- *---------------------------------------------------------------------------
- *
- * TclpSetInitialEncodings --
- *
- * Based on the locale, determine the encoding of the operating
- * system and the default encoding for newly opened files.
- *
- * Called at process initialization time, and part way through
- * startup, we verify that the initial encodings were correctly
- * setup. Depending on Tcl's environment, there may not have been
- * enough information first time through (above).
- *
- * Results:
- * None.
- *
- * Side effects:
- * The Tcl library path is converted from native encoding to UTF-8,
- * on the first call, and the encodings may be changed on first or
- * second call.
- *
- *---------------------------------------------------------------------------
- */
- void
- TclpSetInitialEncodings()
- {
- CONST char *encoding;
- char buf[4 + TCL_INTEGER_SPACE];
- if (libraryPathEncodingFixed == 0) {
- int platformId, useWide;
- platformId = TclWinGetPlatformId();
- useWide = ((platformId == VER_PLATFORM_WIN32_NT)
- || (platformId == VER_PLATFORM_WIN32_CE));
- TclWinSetInterfaces(useWide);
- wsprintfA(buf, "cp%d", GetACP());
- Tcl_SetSystemEncoding(NULL, buf);
- if (!useWide) {
- Tcl_Obj *pathPtr = TclGetLibraryPath();
- if (pathPtr != NULL) {
- int i, objc;
- Tcl_Obj **objv;
-
- objc = 0;
- Tcl_ListObjGetElements(NULL, pathPtr, &objc, &objv);
- for (i = 0; i < objc; i++) {
- int length;
- char *string;
- Tcl_DString ds;
- string = Tcl_GetStringFromObj(objv[i], &length);
- Tcl_ExternalToUtfDString(NULL, string, length, &ds);
- Tcl_SetStringObj(objv[i], Tcl_DStringValue(&ds),
- Tcl_DStringLength(&ds));
- Tcl_DStringFree(&ds);
- }
- }
- }
-
- libraryPathEncodingFixed = 1;
- } else {
- wsprintfA(buf, "cp%d", GetACP());
- Tcl_SetSystemEncoding(NULL, buf);
- }
- /* This is only ever called from the startup thread */
- if (binaryEncoding == NULL) {
- /*
- * Keep this encoding preloaded. The IO package uses it for
- * gets on a binary channel.
- */
- encoding = "iso8859-1";
- binaryEncoding = Tcl_GetEncoding(NULL, encoding);
- }
- }
- /*
- *---------------------------------------------------------------------------
- *
- * TclpSetVariables --
- *
- * Performs platform-specific interpreter initialization related to
- * the tcl_platform and env variables, and other platform-specific
- * things.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Sets "tcl_platform", and "env(HOME)" Tcl variables.
- *
- *----------------------------------------------------------------------
- */
- void
- TclpSetVariables(interp)
- Tcl_Interp *interp; /* Interp to initialize. */
- {
- CONST char *ptr;
- char buffer[TCL_INTEGER_SPACE * 2];
- SYSTEM_INFO sysInfo;
- OemId *oemId;
- OSVERSIONINFOA osInfo;
- Tcl_DString ds;
- TCHAR szUserName[ UNLEN+1 ];
- DWORD dwUserNameLen = sizeof(szUserName);
- osInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
- GetVersionExA(&osInfo);
- oemId = (OemId *) &sysInfo;
- GetSystemInfo(&sysInfo);
- /*
- * Define the tcl_platform array.
- */
- Tcl_SetVar2(interp, "tcl_platform", "platform", "windows",
- TCL_GLOBAL_ONLY);
- if (osInfo.dwPlatformId < NUMPLATFORMS) {
- Tcl_SetVar2(interp, "tcl_platform", "os",
- platforms[osInfo.dwPlatformId], TCL_GLOBAL_ONLY);
- }
- wsprintfA(buffer, "%d.%d", osInfo.dwMajorVersion, osInfo.dwMinorVersion);
- Tcl_SetVar2(interp, "tcl_platform", "osVersion", buffer, TCL_GLOBAL_ONLY);
- if (oemId->wProcessorArchitecture < NUMPROCESSORS) {
- Tcl_SetVar2(interp, "tcl_platform", "machine",
- processors[oemId->wProcessorArchitecture],
- TCL_GLOBAL_ONLY);
- }
- #ifdef _DEBUG
- /*
- * The existence of the "debug" element of the tcl_platform array indicates
- * that this particular Tcl shell has been compiled with debug information.
- * Using "info exists tcl_platform(debug)" a Tcl script can direct the
- * interpreter to load debug versions of DLLs with the load command.
- */
- Tcl_SetVar2(interp, "tcl_platform", "debug", "1",
- TCL_GLOBAL_ONLY);
- #endif
- /*
- * Set up the HOME environment variable from the HOMEDRIVE & HOMEPATH
- * environment variables, if necessary.
- */
- Tcl_DStringInit(&ds);
- ptr = Tcl_GetVar2(interp, "env", "HOME", TCL_GLOBAL_ONLY);
- if (ptr == NULL) {
- ptr = Tcl_GetVar2(interp, "env", "HOMEDRIVE", TCL_GLOBAL_ONLY);
- if (ptr != NULL) {
- Tcl_DStringAppend(&ds, ptr, -1);
- }
- ptr = Tcl_GetVar2(interp, "env", "HOMEPATH", TCL_GLOBAL_ONLY);
- if (ptr != NULL) {
- Tcl_DStringAppend(&ds, ptr, -1);
- }
- if (Tcl_DStringLength(&ds) > 0) {
- Tcl_SetVar2(interp, "env", "HOME", Tcl_DStringValue(&ds),
- TCL_GLOBAL_ONLY);
- } else {
- Tcl_SetVar2(interp, "env", "HOME", "c:\", TCL_GLOBAL_ONLY);
- }
- }
- /*
- * Initialize the user name from the environment first, since this is much
- * faster than asking the system.
- */
- Tcl_DStringInit( &ds );
- if (TclGetEnv("USERNAME", &ds) == NULL) {
- if ( GetUserName( szUserName, &dwUserNameLen ) != 0 ) {
- Tcl_WinTCharToUtf( szUserName, dwUserNameLen, &ds );
- }
- }
- Tcl_SetVar2(interp, "tcl_platform", "user", Tcl_DStringValue(&ds),
- TCL_GLOBAL_ONLY);
- Tcl_DStringFree(&ds);
- }
- /*
- *----------------------------------------------------------------------
- *
- * TclpFindVariable --
- *
- * Locate the entry in environ for a given name. On Unix this
- * routine is case sensetive, on Windows this matches mioxed case.
- *
- * Results:
- * The return value is the index in environ of an entry with the
- * name "name", or -1 if there is no such entry. The integer at
- * *lengthPtr is filled in with the length of name (if a matching
- * entry is found) or the length of the environ array (if no matching
- * entry is found).
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- int
- TclpFindVariable(name, lengthPtr)
- CONST char *name; /* Name of desired environment variable
- * (UTF-8). */
- int *lengthPtr; /* Used to return length of name (for
- * successful searches) or number of non-NULL
- * entries in environ (for unsuccessful
- * searches). */
- {
- int i, length, result = -1;
- register CONST char *env, *p1, *p2;
- char *envUpper, *nameUpper;
- Tcl_DString envString;
- /*
- * Convert the name to all upper case for the case insensitive
- * comparison.
- */
- length = strlen(name);
- nameUpper = (char *) ckalloc((unsigned) length+1);
- memcpy((VOID *) nameUpper, (VOID *) name, (size_t) length+1);
- Tcl_UtfToUpper(nameUpper);
-
- Tcl_DStringInit(&envString);
- for (i = 0, env = environ[i]; env != NULL; i++, env = environ[i]) {
- /*
- * Chop the env string off after the equal sign, then Convert
- * the name to all upper case, so we do not have to convert
- * all the characters after the equal sign.
- */
-
- envUpper = Tcl_ExternalToUtfDString(NULL, env, -1, &envString);
- p1 = strchr(envUpper, '=');
- if (p1 == NULL) {
- continue;
- }
- length = (int) (p1 - envUpper);
- Tcl_DStringSetLength(&envString, length+1);
- Tcl_UtfToUpper(envUpper);
- p1 = envUpper;
- p2 = nameUpper;
- for (; *p2 == *p1; p1++, p2++) {
- /* NULL loop body. */
- }
- if ((*p1 == '=') && (*p2 == ' ')) {
- *lengthPtr = length;
- result = i;
- goto done;
- }
-
- Tcl_DStringFree(&envString);
- }
-
- *lengthPtr = i;
- done:
- Tcl_DStringFree(&envString);
- ckfree(nameUpper);
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * Tcl_Init --
- *
- * This procedure is typically invoked by Tcl_AppInit procedures
- * to perform additional initialization for a Tcl interpreter,
- * such as sourcing the "init.tcl" script.
- *
- * Results:
- * Returns a standard Tcl completion code and sets the interp's
- * result if there is an error.
- *
- * Side effects:
- * Depends on what's in the init.tcl script.
- *
- *----------------------------------------------------------------------
- */
- int
- Tcl_Init(interp)
- Tcl_Interp *interp; /* Interpreter to initialize. */
- {
- Tcl_Obj *pathPtr;
- if (tclPreInitScript != NULL) {
- if (Tcl_Eval(interp, tclPreInitScript) == TCL_ERROR) {
- return (TCL_ERROR);
- };
- }
- pathPtr = TclGetLibraryPath();
- if (pathPtr == NULL) {
- pathPtr = Tcl_NewObj();
- }
- Tcl_IncrRefCount(pathPtr);
- Tcl_SetVar2Ex(interp, "tcl_libPath", NULL, pathPtr, TCL_GLOBAL_ONLY);
- Tcl_DecrRefCount(pathPtr);
- return Tcl_Eval(interp, initScript);
- }
- /*
- *----------------------------------------------------------------------
- *
- * Tcl_SourceRCFile --
- *
- * This procedure is typically invoked by Tcl_Main of Tk_Main
- * procedure to source an application specific rc file into the
- * interpreter at startup time.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Depends on what's in the rc script.
- *
- *----------------------------------------------------------------------
- */
- void
- Tcl_SourceRCFile(interp)
- Tcl_Interp *interp; /* Interpreter to source rc file into. */
- {
- Tcl_DString temp;
- CONST char *fileName;
- Tcl_Channel errChannel;
- fileName = Tcl_GetVar(interp, "tcl_rcFileName", TCL_GLOBAL_ONLY);
- if (fileName != NULL) {
- Tcl_Channel c;
- CONST char *fullName;
- Tcl_DStringInit(&temp);
- fullName = Tcl_TranslateFileName(interp, fileName, &temp);
- if (fullName == NULL) {
- /*
- * Couldn't translate the file name (e.g. it referred to a
- * bogus user or there was no HOME environment variable).
- * Just do nothing.
- */
- } else {
- /*
- * Test for the existence of the rc file before trying to read it.
- */
- c = Tcl_OpenFileChannel(NULL, fullName, "r", 0);
- if (c != (Tcl_Channel) NULL) {
- Tcl_Close(NULL, c);
- if (Tcl_EvalFile(interp, fullName) != TCL_OK) {
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
- if (errChannel) {
- Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
- Tcl_WriteChars(errChannel, "n", 1);
- }
- }
- }
- }
- Tcl_DStringFree(&temp);
- }
- }