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-rw-r--r--generic/tclMain.c707
1 files changed, 376 insertions, 331 deletions
diff --git a/generic/tclMain.c b/generic/tclMain.c
index 7a19a38..373e3f6 100644
--- a/generic/tclMain.c
+++ b/generic/tclMain.c
@@ -2,6 +2,11 @@
* tclMain.c --
*
* Main program for Tcl shells and other Tcl-based applications.
+ * This file contains a generic main program for Tcl shells and other
+ * Tcl-based applications. It can be used as-is for many applications,
+ * just by supplying a different appInitProc function for each specific
+ * application. Or, it can be used as a template for creating new main
+ * programs for Tcl applications.
*
* Copyright (c) 1988-1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
@@ -11,10 +16,22 @@
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
-#include "tclInt.h"
+/**
+ * On Windows, this file needs to be compiled twice, once with
+ * TCL_ASCII_MAIN defined. This way both Tcl_Main and Tcl_MainExW
+ * can be implemented, sharing the same source code.
+ */
+#if defined(TCL_ASCII_MAIN)
+# ifdef UNICODE
+# undef UNICODE
+# undef _UNICODE
+# else
+# define UNICODE
+# define _UNICODE
+# endif
+#endif
-#undef TCL_STORAGE_CLASS
-#define TCL_STORAGE_CLASS DLLEXPORT
+#include "tclInt.h"
/*
* The default prompt used when the user has not overridden it.
@@ -23,6 +40,37 @@
#define DEFAULT_PRIMARY_PROMPT "% "
/*
+ * This file can be compiled on Windows in UNICODE mode, as well as
+ * on all other platforms using the native encoding. This is done
+ * by using the normal Windows functions like _tcscmp, but on
+ * platforms which don't have <tchar.h> we have to translate that
+ * to strcmp here.
+ */
+#ifndef __WIN32__
+# define TCHAR char
+# define TEXT(arg) arg
+# define _tcscmp strcmp
+#endif
+
+/*
+ * Further on, in UNICODE mode, we need to use Tcl_NewUnicodeObj,
+ * while otherwise NewNativeObj is needed (which provides proper
+ * conversion from native encoding to UTF-8).
+ */
+#ifdef UNICODE
+# define NewNativeObj Tcl_NewUnicodeObj
+#else /* !UNICODE */
+ static Tcl_Obj *NewNativeObj(char *string, int length) {
+ Tcl_Obj *obj;
+ Tcl_DString ds;
+ Tcl_ExternalToUtfDString(NULL, string, length, &ds);
+ obj = Tcl_NewStringObj(Tcl_DStringValue(&ds), Tcl_DStringLength(&ds));
+ Tcl_DStringFree(&ds);
+ return obj;
+}
+#endif /* !UNICODE */
+
+/*
* Declarations for various library functions and variables (don't want to
* include tclPort.h here, because people might copy this file out of the Tcl
* source directory to make their own modified versions).
@@ -30,9 +78,20 @@
extern CRTIMPORT int isatty(int fd);
-static Tcl_Obj *tclStartupScriptPath = NULL;
-static Tcl_Obj *tclStartupScriptEncoding = NULL;
-static Tcl_MainLoopProc *mainLoopProc = NULL;
+/*
+ * The thread-local variables for this file's functions.
+ */
+
+typedef struct {
+ Tcl_Obj *path; /* The filename of the script for *_Main()
+ * routines to [source] as a startup script,
+ * or NULL for none set, meaning enter
+ * interactive mode. */
+ Tcl_Obj *encoding; /* The encoding of the startup script file. */
+ Tcl_MainLoopProc *mainLoopProc;
+ /* Any installed main loop handler. The main
+ * extension that installs these is Tk. */
+} ThreadSpecificData;
/*
* Structure definition for information used to keep the state of an
@@ -63,9 +122,13 @@ typedef struct InteractiveState {
* Forward declarations for functions defined later in this file.
*/
-static void Prompt(Tcl_Interp *interp, PromptType *promptPtr);
+MODULE_SCOPE Tcl_MainLoopProc *TclGetMainLoop(void);
+static void Prompt(Tcl_Interp *interp, InteractiveState *isPtr);
static void StdinProc(ClientData clientData, int mask);
+static void FreeMainInterp(ClientData clientData);
+#ifndef TCL_ASCII_MAIN
+static Tcl_ThreadDataKey dataKey;
/*
*----------------------------------------------------------------------
*
@@ -85,27 +148,29 @@ static void StdinProc(ClientData clientData, int mask);
void
Tcl_SetStartupScript(
Tcl_Obj *path, /* Filesystem path of startup script file */
- CONST char *encoding) /* Encoding of the data in that file */
+ const char *encoding) /* Encoding of the data in that file */
{
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
Tcl_Obj *newEncoding = NULL;
+
if (encoding != NULL) {
newEncoding = Tcl_NewStringObj(encoding, -1);
}
- if (tclStartupScriptPath != NULL) {
- Tcl_DecrRefCount(tclStartupScriptPath);
+ if (tsdPtr->path != NULL) {
+ Tcl_DecrRefCount(tsdPtr->path);
}
- tclStartupScriptPath = path;
- if (tclStartupScriptPath != NULL) {
- Tcl_IncrRefCount(tclStartupScriptPath);
+ tsdPtr->path = path;
+ if (tsdPtr->path != NULL) {
+ Tcl_IncrRefCount(tsdPtr->path);
}
- if (tclStartupScriptEncoding != NULL) {
- Tcl_DecrRefCount(tclStartupScriptEncoding);
+ if (tsdPtr->encoding != NULL) {
+ Tcl_DecrRefCount(tsdPtr->encoding);
}
- tclStartupScriptEncoding = newEncoding;
- if (tclStartupScriptEncoding != NULL) {
- Tcl_IncrRefCount(tclStartupScriptEncoding);
+ tsdPtr->encoding = newEncoding;
+ if (tsdPtr->encoding != NULL) {
+ Tcl_IncrRefCount(tsdPtr->encoding);
}
}
@@ -121,131 +186,31 @@ Tcl_SetStartupScript(
* The path of the startup script; NULL if none has been set.
*
* Side effects:
- * If encodingPtr is not NULL, stores a (CONST char *) in it pointing to
- * the encoding name registered for the startup script. Tcl retains
- * ownership of the string, and may free it. Caller should make a copy
- * for long-term use.
+ * If encodingPtr is not NULL, stores a (const char *) in it pointing to
+ * the encoding name registered for the startup script. Tcl retains
+ * ownership of the string, and may free it. Caller should make a copy
+ * for long-term use.
*
*----------------------------------------------------------------------
*/
Tcl_Obj *
Tcl_GetStartupScript(
- CONST char **encodingPtr) /* When not NULL, points to storage for the
- * (CONST char *) that points to the
+ const char **encodingPtr) /* When not NULL, points to storage for the
+ * (const char *) that points to the
* registered encoding name for the startup
- * script */
+ * script. */
{
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
if (encodingPtr != NULL) {
- if (tclStartupScriptEncoding == NULL) {
+ if (tsdPtr->encoding == NULL) {
*encodingPtr = NULL;
} else {
- *encodingPtr = Tcl_GetString(tclStartupScriptEncoding);
+ *encodingPtr = Tcl_GetString(tsdPtr->encoding);
}
}
- return tclStartupScriptPath;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetStartupScriptPath --
- *
- * Primes the startup script VFS path, used to override the command line
- * processing.
- *
- * Results:
- * None.
- *
- * Side effects:
- * This function initializes the VFS path of the Tcl script to run at
- * startup.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclSetStartupScriptPath(
- Tcl_Obj *path)
-{
- Tcl_SetStartupScript(path, NULL);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclGetStartupScriptPath --
- *
- * Gets the startup script VFS path, used to override the command line
- * processing.
- *
- * Results:
- * The startup script VFS path, NULL if none has been set.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_Obj *
-TclGetStartupScriptPath(void)
-{
- return Tcl_GetStartupScript(NULL);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetStartupScriptFileName --
- *
- * Primes the startup script file name, used to override the command line
- * processing.
- *
- * Results:
- * None.
- *
- * Side effects:
- * This function initializes the file name of the Tcl script to run at
- * startup.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclSetStartupScriptFileName(
- CONST char *fileName)
-{
- Tcl_Obj *path = Tcl_NewStringObj(fileName,-1);
- Tcl_SetStartupScript(path, NULL);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclGetStartupScriptFileName --
- *
- * Gets the startup script file name, used to override the command line
- * processing.
- *
- * Results:
- * The startup script file name, NULL if none has been set.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-CONST char *
-TclGetStartupScriptFileName(void)
-{
- Tcl_Obj *path = Tcl_GetStartupScript(NULL);
-
- if (path == NULL) {
- return NULL;
- }
- return Tcl_GetString(path);
+ return tsdPtr->path;
}
/*----------------------------------------------------------------------
@@ -270,13 +235,13 @@ Tcl_SourceRCFile(
Tcl_Interp *interp) /* Interpreter to source rc file into. */
{
Tcl_DString temp;
- CONST char *fileName;
- Tcl_Channel errChannel;
+ const char *fileName;
+ Tcl_Channel chan;
fileName = Tcl_GetVar(interp, "tcl_rcFileName", TCL_GLOBAL_ONLY);
if (fileName != NULL) {
Tcl_Channel c;
- CONST char *fullName;
+ const char *fullName;
Tcl_DStringInit(&temp);
fullName = Tcl_TranslateFileName(interp, fileName, &temp);
@@ -292,24 +257,25 @@ Tcl_SourceRCFile(
*/
c = Tcl_OpenFileChannel(NULL, fullName, "r", 0);
- if (c != (Tcl_Channel) NULL) {
+ if (c != 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);
- }
- }
- }
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+ if (chan) {
+ Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
+ Tcl_WriteChars(chan, "\n", 1);
+ }
+ }
+ }
}
Tcl_DStringFree(&temp);
}
}
+#endif /* !TCL_ASCII_MAIN */
/*----------------------------------------------------------------------
*
- * Tcl_Main --
+ * Tcl_Main, Tcl_MainEx --
*
* Main program for tclsh and most other Tcl-based applications.
*
@@ -326,27 +292,28 @@ Tcl_SourceRCFile(
*/
void
-Tcl_Main(
+Tcl_MainEx(
int argc, /* Number of arguments. */
- char **argv, /* Array of argument strings. */
- Tcl_AppInitProc *appInitProc)
+ TCHAR **argv, /* Array of argument strings. */
+ Tcl_AppInitProc *appInitProc,
/* Application-specific initialization
* function to call after most initialization
* but before starting to execute commands. */
+ Tcl_Interp *interp)
{
- Tcl_Obj *path, *resultPtr, *argvPtr, *commandPtr = NULL;
- CONST char *encodingName = NULL;
- PromptType prompt = PROMPT_START;
- int code, length, tty, exitCode = 0;
- Tcl_Channel inChannel, outChannel, errChannel;
- Tcl_Interp *interp;
- Tcl_DString appName;
-
- Tcl_FindExecutable(argv[0]);
+ Tcl_Obj *path, *resultPtr, *argvPtr, *appName;
+ const char *encodingName = NULL;
+ int code, exitCode = 0;
+ Tcl_MainLoopProc *mainLoopProc;
+ Tcl_Channel chan;
+ InteractiveState is;
- interp = Tcl_CreateInterp();
Tcl_InitMemory(interp);
+ is.interp = interp;
+ is.prompt = PROMPT_START;
+ is.commandPtr = Tcl_NewObj();
+
/*
* If the application has not already set a startup script, parse the
* first few command line arguments to determine the script path and
@@ -354,21 +321,22 @@ Tcl_Main(
*/
if (NULL == Tcl_GetStartupScript(NULL)) {
-
/*
* Check whether first 3 args (argv[1] - argv[3]) look like
- * -encoding ENCODING FILENAME
+ * -encoding ENCODING FILENAME
* or like
- * FILENAME
+ * FILENAME
*/
- if ((argc > 3) && (0 == strcmp("-encoding", argv[1]))
- && ('-' != argv[3][0])) {
- Tcl_SetStartupScript(Tcl_NewStringObj(argv[3], -1), argv[2]);
+ if ((argc > 3) && (0 == _tcscmp(TEXT("-encoding"), argv[1]))
+ && (TEXT('-') != argv[3][0])) {
+ Tcl_Obj *value = NewNativeObj(argv[2], -1);
+ Tcl_SetStartupScript(NewNativeObj(argv[3], -1), Tcl_GetString(value));
+ Tcl_DecrRefCount(value);
argc -= 3;
argv += 3;
- } else if ((argc > 1) && ('-' != argv[1][0])) {
- Tcl_SetStartupScript(Tcl_NewStringObj(argv[1], -1), NULL);
+ } else if ((argc > 1) && (TEXT('-') != argv[1][0])) {
+ Tcl_SetStartupScript(NewNativeObj(argv[1], -1), NULL);
argc--;
argv++;
}
@@ -376,15 +344,11 @@ Tcl_Main(
path = Tcl_GetStartupScript(&encodingName);
if (path == NULL) {
- Tcl_ExternalToUtfDString(NULL, argv[0], -1, &appName);
+ appName = NewNativeObj(argv[0], -1);
} else {
- CONST char *pathName = Tcl_GetStringFromObj(path, &length);
- Tcl_ExternalToUtfDString(NULL, pathName, length, &appName);
- path = Tcl_NewStringObj(Tcl_DStringValue(&appName), -1);
- Tcl_SetStartupScript(path, encodingName);
+ appName = path;
}
- Tcl_SetVar(interp, "argv0", Tcl_DStringValue(&appName), TCL_GLOBAL_ONLY);
- Tcl_DStringFree(&appName);
+ Tcl_SetVar2Ex(interp, "argv0", NULL, appName, TCL_GLOBAL_ONLY);
argc--;
argv++;
@@ -392,11 +356,7 @@ Tcl_Main(
argvPtr = Tcl_NewListObj(0, NULL);
while (argc--) {
- Tcl_DString ds;
- Tcl_ExternalToUtfDString(NULL, *argv++, -1, &ds);
- Tcl_ListObjAppendElement(NULL, argvPtr, Tcl_NewStringObj(
- Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)));
- Tcl_DStringFree(&ds);
+ Tcl_ListObjAppendElement(NULL, argvPtr, NewNativeObj(*argv++, -1));
}
Tcl_SetVar2Ex(interp, "argv", NULL, argvPtr, TCL_GLOBAL_ONLY);
@@ -404,22 +364,22 @@ Tcl_Main(
* Set the "tcl_interactive" variable.
*/
- tty = isatty(0);
- Tcl_SetVar(interp, "tcl_interactive", ((path == NULL) && tty) ? "1" : "0",
- TCL_GLOBAL_ONLY);
+ is.tty = isatty(0);
+ Tcl_SetVar2Ex(interp, "tcl_interactive", NULL,
+ Tcl_NewIntObj(!path && is.tty), TCL_GLOBAL_ONLY);
/*
* Invoke application-specific initialization.
*/
- Tcl_Preserve((ClientData) interp);
- if ((*appInitProc)(interp) != TCL_OK) {
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
- if (errChannel) {
- Tcl_WriteChars(errChannel,
+ Tcl_Preserve(interp);
+ if (appInitProc(interp) != TCL_OK) {
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+ if (chan) {
+ Tcl_WriteChars(chan,
"application-specific initialization failed: ", -1);
- Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
- Tcl_WriteChars(errChannel, "\n", 1);
+ Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
+ Tcl_WriteChars(chan, "\n", 1);
}
}
if (Tcl_InterpDeleted(interp)) {
@@ -428,18 +388,26 @@ Tcl_Main(
if (Tcl_LimitExceeded(interp)) {
goto done;
}
+ if (TclFullFinalizationRequested()) {
+ /*
+ * Arrange for final deletion of the main interp
+ */
+ /* ARGH Munchhausen effect */
+ Tcl_CreateExitHandler(FreeMainInterp, (ClientData)interp);
+ }
/*
- * If a script file was specified then just source that file and quit.
- * Must fetch it again, as the appInitProc might have reset it.
+ * Invoke the script specified on the command line, if any. Must fetch it
+ * again, as the appInitProc might have reset it.
*/
path = Tcl_GetStartupScript(&encodingName);
if (path != NULL) {
+ Tcl_ResetResult(interp);
code = Tcl_FSEvalFileEx(interp, path, encodingName);
if (code != TCL_OK) {
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
- if (errChannel) {
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+ if (chan) {
Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);
Tcl_Obj *keyPtr, *valuePtr;
@@ -449,9 +417,9 @@ Tcl_Main(
Tcl_DecrRefCount(keyPtr);
if (valuePtr) {
- Tcl_WriteObj(errChannel, valuePtr);
+ Tcl_WriteObj(chan, valuePtr);
}
- Tcl_WriteChars(errChannel, "\n", 1);
+ Tcl_WriteChars(chan, "\n", 1);
Tcl_DecrRefCount(options);
}
exitCode = 1;
@@ -475,45 +443,45 @@ Tcl_Main(
* may have been changed.
*/
- commandPtr = Tcl_NewObj();
- Tcl_IncrRefCount(commandPtr);
+ Tcl_IncrRefCount(is.commandPtr);
/*
* Get a new value for tty if anyone writes to ::tcl_interactive
*/
- Tcl_LinkVar(interp, "tcl_interactive", (char *) &tty, TCL_LINK_BOOLEAN);
- inChannel = Tcl_GetStdChannel(TCL_STDIN);
- outChannel = Tcl_GetStdChannel(TCL_STDOUT);
- while ((inChannel != (Tcl_Channel) NULL) && !Tcl_InterpDeleted(interp)) {
+ Tcl_LinkVar(interp, "tcl_interactive", (char *) &is.tty, TCL_LINK_BOOLEAN);
+ is.input = Tcl_GetStdChannel(TCL_STDIN);
+ while ((is.input != NULL) && !Tcl_InterpDeleted(interp)) {
+ mainLoopProc = TclGetMainLoop();
if (mainLoopProc == NULL) {
- if (tty) {
- Prompt(interp, &prompt);
+ int length;
+ if (is.tty) {
+ Prompt(interp, &is);
if (Tcl_InterpDeleted(interp)) {
break;
}
if (Tcl_LimitExceeded(interp)) {
break;
}
- inChannel = Tcl_GetStdChannel(TCL_STDIN);
- if (inChannel == (Tcl_Channel) NULL) {
+ is.input = Tcl_GetStdChannel(TCL_STDIN);
+ if (is.input == NULL) {
break;
}
}
- if (Tcl_IsShared(commandPtr)) {
- Tcl_DecrRefCount(commandPtr);
- commandPtr = Tcl_DuplicateObj(commandPtr);
- Tcl_IncrRefCount(commandPtr);
+ if (Tcl_IsShared(is.commandPtr)) {
+ Tcl_DecrRefCount(is.commandPtr);
+ is.commandPtr = Tcl_DuplicateObj(is.commandPtr);
+ Tcl_IncrRefCount(is.commandPtr);
}
- length = Tcl_GetsObj(inChannel, commandPtr);
+ length = Tcl_GetsObj(is.input, is.commandPtr);
if (length < 0) {
- if (Tcl_InputBlocked(inChannel)) {
+ if (Tcl_InputBlocked(is.input)) {
/*
* This can only happen if stdin has been set to
- * non-blocking. In that case cycle back and try again.
+ * non-blocking. In that case cycle back and try again.
* This sets up a tight polling loop (since we have no
- * event loop running). If this causes bad CPU hogging,
- * we might try toggling the blocking on stdin instead.
+ * event loop running). If this causes bad CPU hogging, we
+ * might try toggling the blocking on stdin instead.
*/
continue;
@@ -527,48 +495,50 @@ Tcl_Main(
}
/*
- * Add the newline removed by Tcl_GetsObj back to the string.
- * Have to add it back before testing completeness, because
- * it can make a difference. [Bug 1775878].
+ * Add the newline removed by Tcl_GetsObj back to the string. Have
+ * to add it back before testing completeness, because it can make
+ * a difference. [Bug 1775878]
*/
- if (Tcl_IsShared(commandPtr)) {
- Tcl_DecrRefCount(commandPtr);
- commandPtr = Tcl_DuplicateObj(commandPtr);
- Tcl_IncrRefCount(commandPtr);
+ if (Tcl_IsShared(is.commandPtr)) {
+ Tcl_DecrRefCount(is.commandPtr);
+ is.commandPtr = Tcl_DuplicateObj(is.commandPtr);
+ Tcl_IncrRefCount(is.commandPtr);
}
- Tcl_AppendToObj(commandPtr, "\n", 1);
- if (!TclObjCommandComplete(commandPtr)) {
- prompt = PROMPT_CONTINUE;
+ Tcl_AppendToObj(is.commandPtr, "\n", 1);
+ if (!TclObjCommandComplete(is.commandPtr)) {
+ is.prompt = PROMPT_CONTINUE;
continue;
}
- prompt = PROMPT_START;
+ is.prompt = PROMPT_START;
+
/*
- * The final newline is syntactically redundant, and causes
- * some error messages troubles deeper in, so lop it back off.
+ * The final newline is syntactically redundant, and causes some
+ * error messages troubles deeper in, so lop it back off.
*/
- Tcl_GetStringFromObj(commandPtr, &length);
- Tcl_SetObjLength(commandPtr, --length);
- code = Tcl_RecordAndEvalObj(interp, commandPtr, TCL_EVAL_GLOBAL);
- inChannel = Tcl_GetStdChannel(TCL_STDIN);
- outChannel = Tcl_GetStdChannel(TCL_STDOUT);
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
- Tcl_DecrRefCount(commandPtr);
- commandPtr = Tcl_NewObj();
- Tcl_IncrRefCount(commandPtr);
+
+ Tcl_GetStringFromObj(is.commandPtr, &length);
+ Tcl_SetObjLength(is.commandPtr, --length);
+ code = Tcl_RecordAndEvalObj(interp, is.commandPtr, TCL_EVAL_GLOBAL);
+ is.input = Tcl_GetStdChannel(TCL_STDIN);
+ Tcl_DecrRefCount(is.commandPtr);
+ is.commandPtr = Tcl_NewObj();
+ Tcl_IncrRefCount(is.commandPtr);
if (code != TCL_OK) {
- if (errChannel) {
- Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
- Tcl_WriteChars(errChannel, "\n", 1);
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+ if (chan) {
+ Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
+ Tcl_WriteChars(chan, "\n", 1);
}
- } else if (tty) {
+ } else if (is.tty) {
resultPtr = Tcl_GetObjResult(interp);
Tcl_IncrRefCount(resultPtr);
Tcl_GetStringFromObj(resultPtr, &length);
- if ((length > 0) && outChannel) {
- Tcl_WriteObj(outChannel, resultPtr);
- Tcl_WriteChars(outChannel, "\n", 1);
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
+ if ((length > 0) && chan) {
+ Tcl_WriteObj(chan, resultPtr);
+ Tcl_WriteChars(chan, "\n", 1);
}
Tcl_DecrRefCount(resultPtr);
}
@@ -579,47 +549,21 @@ Tcl_Main(
* channel handler for stdin.
*/
- InteractiveState *isPtr = NULL;
-
- if (inChannel) {
- if (tty) {
- Prompt(interp, &prompt);
+ if (is.input) {
+ if (is.tty) {
+ Prompt(interp, &is);
}
- isPtr = (InteractiveState *)
- ckalloc((int) sizeof(InteractiveState));
- isPtr->input = inChannel;
- isPtr->tty = tty;
- isPtr->commandPtr = commandPtr;
- isPtr->prompt = prompt;
- isPtr->interp = interp;
-
- Tcl_UnlinkVar(interp, "tcl_interactive");
- Tcl_LinkVar(interp, "tcl_interactive", (char *) &(isPtr->tty),
- TCL_LINK_BOOLEAN);
-
- Tcl_CreateChannelHandler(inChannel, TCL_READABLE, StdinProc,
- (ClientData) isPtr);
+
+ Tcl_CreateChannelHandler(is.input, TCL_READABLE, StdinProc, &is);
}
- (*mainLoopProc)();
- mainLoopProc = NULL;
-
- if (inChannel) {
- tty = isPtr->tty;
- Tcl_UnlinkVar(interp, "tcl_interactive");
- Tcl_LinkVar(interp, "tcl_interactive", (char *) &tty,
- TCL_LINK_BOOLEAN);
- prompt = isPtr->prompt;
- commandPtr = isPtr->commandPtr;
- if (isPtr->input != (Tcl_Channel) NULL) {
- Tcl_DeleteChannelHandler(isPtr->input, StdinProc,
- (ClientData) isPtr);
- }
- ckfree((char *)isPtr);
+ mainLoopProc();
+ Tcl_SetMainLoop(NULL);
+
+ if (is.input) {
+ Tcl_DeleteChannelHandler(is.input, StdinProc, &is);
}
- inChannel = Tcl_GetStdChannel(TCL_STDIN);
- outChannel = Tcl_GetStdChannel(TCL_STDOUT);
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
+ is.input = Tcl_GetStdChannel(TCL_STDIN);
}
#ifdef TCL_MEM_DEBUG
@@ -629,13 +573,14 @@ Tcl_Main(
*/
if (tclMemDumpFileName != NULL) {
- mainLoopProc = NULL;
+ Tcl_SetMainLoop(NULL);
Tcl_DeleteInterp(interp);
}
#endif
}
done:
+ mainLoopProc = TclGetMainLoop();
if ((exitCode == 0) && (mainLoopProc != NULL)
&& !Tcl_LimitExceeded(interp)) {
/*
@@ -644,11 +589,11 @@ Tcl_Main(
* this point.
*/
- (*mainLoopProc)();
- mainLoopProc = NULL;
+ mainLoopProc();
+ Tcl_SetMainLoop(NULL);
}
- if (commandPtr != NULL) {
- Tcl_DecrRefCount(commandPtr);
+ if (is.commandPtr != NULL) {
+ Tcl_DecrRefCount(is.commandPtr);
}
/*
@@ -660,33 +605,39 @@ Tcl_Main(
if (!Tcl_InterpDeleted(interp)) {
if (!Tcl_LimitExceeded(interp)) {
Tcl_Obj *cmd = Tcl_ObjPrintf("exit %d", exitCode);
+
Tcl_IncrRefCount(cmd);
Tcl_EvalObjEx(interp, cmd, TCL_EVAL_GLOBAL);
Tcl_DecrRefCount(cmd);
}
-
+ }
/*
* If Tcl_EvalObjEx returns, trying to eval [exit], something unusual
* is happening. Maybe interp has been deleted; maybe [exit] was
* redefined, maybe we've blown up because of an exceeded limit. We
* still want to cleanup and exit.
*/
-
- if (!Tcl_InterpDeleted(interp)) {
- Tcl_DeleteInterp(interp);
- }
- }
- Tcl_SetStartupScript(NULL, NULL);
-
- /*
- * If we get here, the master interp has been deleted. Allow its
- * destruction with the last matching Tcl_Release.
- */
-
- Tcl_Release((ClientData) interp);
Tcl_Exit(exitCode);
}
+
+#if (TCL_MAJOR_VERSION == 8) && !defined(UNICODE)
+#undef Tcl_Main
+extern DLLEXPORT void
+Tcl_Main(
+ int argc, /* Number of arguments. */
+ char **argv, /* Array of argument strings. */
+ Tcl_AppInitProc *appInitProc)
+ /* Application-specific initialization
+ * function to call after most initialization
+ * but before starting to execute commands. */
+{
+ Tcl_FindExecutable(argv[0]);
+ Tcl_MainEx(argc, argv, appInitProc, Tcl_CreateInterp());
+}
+#endif
+#ifndef TCL_ASCII_MAIN
+
/*
*---------------------------------------------------------------
*
@@ -695,7 +646,7 @@ Tcl_Main(
* Sets an alternative main loop function.
*
* Results:
- * Returns the previously defined main loop function.
+ * None.
*
* Side effects:
* This function will be called before Tcl exits, allowing for the
@@ -708,8 +659,74 @@ void
Tcl_SetMainLoop(
Tcl_MainLoopProc *proc)
{
- mainLoopProc = proc;
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+ tsdPtr->mainLoopProc = proc;
+}
+
+/*
+ *---------------------------------------------------------------
+ *
+ * TclGetMainLoop --
+ *
+ * Returns the current alternative main loop function.
+ *
+ * Results:
+ * Returns the previously defined main loop function, or NULL to indicate
+ * that no such function has been installed and standard tclsh behaviour
+ * (i.e., exit once the script is evaluated if not interactive) is
+ * requested..
+ *
+ * Side effects:
+ * None (other than possible creation of this file's TSD block).
+ *
+ *---------------------------------------------------------------
+ */
+
+Tcl_MainLoopProc *
+TclGetMainLoop(void)
+{
+ ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+ return tsdPtr->mainLoopProc;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFullFinalizationRequested --
+ *
+ * This function returns true when either -DPURIFY is specified, or the
+ * environment variable TCL_FINALIZE_ON_EXIT is set and not "0". This
+ * predicate is called at places affecting the exit sequence, so that the
+ * default behavior is a fast and deadlock-free exit, and the modified
+ * behavior is a more thorough finalization for debugging purposes (leak
+ * hunting etc).
+ *
+ * Results:
+ * A boolean.
+ *
+ *----------------------------------------------------------------------
+ */
+MODULE_SCOPE int
+TclFullFinalizationRequested(void)
+{
+#ifdef PURIFY
+ return 1;
+#else
+ const char *fin;
+ Tcl_DString ds;
+ int finalize = 0;
+
+ fin = TclGetEnv("TCL_FINALIZE_ON_EXIT", &ds);
+ finalize = ((fin != NULL) && strcmp(fin, "0"));
+ if (fin != NULL) {
+ Tcl_DStringFree(&ds);
+ }
+ return finalize;
+#endif
}
+#endif /* !TCL_ASCII_MAIN */
/*
*----------------------------------------------------------------------
@@ -736,11 +753,11 @@ StdinProc(
ClientData clientData, /* The state of interactive cmd line */
int mask) /* Not used. */
{
- InteractiveState *isPtr = (InteractiveState *) clientData;
+ int code, length;
+ InteractiveState *isPtr = clientData;
Tcl_Channel chan = isPtr->input;
Tcl_Obj *commandPtr = isPtr->commandPtr;
Tcl_Interp *interp = isPtr->interp;
- int code, length;
if (Tcl_IsShared(commandPtr)) {
Tcl_DecrRefCount(commandPtr);
@@ -761,7 +778,7 @@ StdinProc(
Tcl_Exit(0);
}
- Tcl_DeleteChannelHandler(chan, StdinProc, (ClientData) isPtr);
+ Tcl_DeleteChannelHandler(chan, StdinProc, isPtr);
return;
}
@@ -786,30 +803,31 @@ StdinProc(
* things, this will trash the text of the command being evaluated.
*/
- Tcl_CreateChannelHandler(chan, 0, StdinProc, (ClientData) isPtr);
+ Tcl_CreateChannelHandler(chan, 0, StdinProc, isPtr);
code = Tcl_RecordAndEvalObj(interp, commandPtr, TCL_EVAL_GLOBAL);
isPtr->input = chan = Tcl_GetStdChannel(TCL_STDIN);
Tcl_DecrRefCount(commandPtr);
isPtr->commandPtr = commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
- if (chan != (Tcl_Channel) NULL) {
- Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc,
- (ClientData) isPtr);
+ if (chan != NULL) {
+ Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc, isPtr);
}
if (code != TCL_OK) {
- Tcl_Channel errChannel = Tcl_GetStdChannel(TCL_STDERR);
- if (errChannel != (Tcl_Channel) NULL) {
- Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
- Tcl_WriteChars(errChannel, "\n", 1);
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+
+ if (chan != NULL) {
+ Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
+ Tcl_WriteChars(chan, "\n", 1);
}
} else if (isPtr->tty) {
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
- Tcl_Channel outChannel = Tcl_GetStdChannel(TCL_STDOUT);
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
+
Tcl_IncrRefCount(resultPtr);
Tcl_GetStringFromObj(resultPtr, &length);
- if ((length >0) && (outChannel != (Tcl_Channel) NULL)) {
- Tcl_WriteObj(outChannel, resultPtr);
- Tcl_WriteChars(outChannel, "\n", 1);
+ if ((length > 0) && (chan != NULL)) {
+ Tcl_WriteObj(chan, resultPtr);
+ Tcl_WriteChars(chan, "\n", 1);
}
Tcl_DecrRefCount(resultPtr);
}
@@ -819,8 +837,8 @@ StdinProc(
*/
prompt:
- if (isPtr->tty && (isPtr->input != (Tcl_Channel) NULL)) {
- Prompt(interp, &(isPtr->prompt));
+ if (isPtr->tty && (isPtr->input != NULL)) {
+ Prompt(interp, isPtr);
isPtr->input = Tcl_GetStdChannel(TCL_STDIN);
}
}
@@ -845,20 +863,20 @@ StdinProc(
static void
Prompt(
Tcl_Interp *interp, /* Interpreter to use for prompting. */
- PromptType *promptPtr) /* Points to type of prompt to print. Filled
+ InteractiveState *isPtr) /* InteractiveState. Filled
* with PROMPT_NONE after a prompt is
* printed. */
{
Tcl_Obj *promptCmdPtr;
int code;
- Tcl_Channel outChannel, errChannel;
+ Tcl_Channel chan;
- if (*promptPtr == PROMPT_NONE) {
+ if (isPtr->prompt == PROMPT_NONE) {
return;
}
promptCmdPtr = Tcl_GetVar2Ex(interp,
- ((*promptPtr == PROMPT_CONTINUE) ? "tcl_prompt2" : "tcl_prompt1"),
+ ((isPtr->prompt == PROMPT_CONTINUE) ? "tcl_prompt2" : "tcl_prompt1"),
NULL, TCL_GLOBAL_ONLY);
if (Tcl_InterpDeleted(interp)) {
@@ -866,31 +884,58 @@ Prompt(
}
if (promptCmdPtr == NULL) {
defaultPrompt:
- outChannel = Tcl_GetStdChannel(TCL_STDOUT);
- if ((*promptPtr == PROMPT_START)
- && (outChannel != (Tcl_Channel) NULL)) {
- Tcl_WriteChars(outChannel, DEFAULT_PRIMARY_PROMPT,
- strlen(DEFAULT_PRIMARY_PROMPT));
+ if (isPtr->prompt == PROMPT_START) {
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
+ if (chan != NULL) {
+ Tcl_WriteChars(chan, DEFAULT_PRIMARY_PROMPT,
+ strlen(DEFAULT_PRIMARY_PROMPT));
+ }
}
} else {
code = Tcl_EvalObjEx(interp, promptCmdPtr, TCL_EVAL_GLOBAL);
if (code != TCL_OK) {
Tcl_AddErrorInfo(interp,
"\n (script that generates prompt)");
- errChannel = Tcl_GetStdChannel(TCL_STDERR);
- if (errChannel != (Tcl_Channel) NULL) {
- Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
- Tcl_WriteChars(errChannel, "\n", 1);
+ chan = Tcl_GetStdChannel(TCL_STDERR);
+ if (chan != NULL) {
+ Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
+ Tcl_WriteChars(chan, "\n", 1);
}
goto defaultPrompt;
}
}
- outChannel = Tcl_GetStdChannel(TCL_STDOUT);
- if (outChannel != (Tcl_Channel) NULL) {
- Tcl_Flush(outChannel);
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
+ if (chan != NULL) {
+ Tcl_Flush(chan);
}
- *promptPtr = PROMPT_NONE;
+ isPtr->prompt = PROMPT_NONE;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeMainInterp --
+ *
+ * Exit handler used to cleanup the main interpreter and ancillary startup
+ * script storage at exit.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeMainInterp(
+ ClientData clientData)
+{
+ Tcl_Interp *interp = (Tcl_Interp *) clientData;
+
+ /*if (TclInExit()) return;*/
+
+ if (!Tcl_InterpDeleted(interp)) {
+ Tcl_DeleteInterp(interp);
+ }
+ Tcl_SetStartupScript(NULL, NULL);
+ Tcl_Release(interp);
}
/*