/* ARGSUSED */
static void
StdinProc(
ClientData clientData, /* The state of interactive cmd line */
int mask) /* Not used. */
{
int code, length;
InteractiveState *isPtr = clientData;
Tcl_Channel chan = isPtr->input;
Tcl_Obj *commandPtr = isPtr->commandPtr;
Tcl_Interp *interp = isPtr->interp;
if (Tcl_IsShared(commandPtr)) {
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_DuplicateObj(commandPtr);
Tcl_IncrRefCount(commandPtr);
}
length = Tcl_GetsObj(chan, commandPtr);
if (length < 0) {
if (Tcl_InputBlocked(chan)) {
return;
}
if (isPtr->tty) {
/*
* Would be better to find a way to exit the mainLoop? Or perhaps
* evaluate [exit]? Leaving as is for now due to compatibility
* concerns.
*/
Tcl_Exit(0);
}
Tcl_DeleteChannelHandler(chan, StdinProc, isPtr);
return;
}
if (Tcl_IsShared(commandPtr)) {
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_DuplicateObj(commandPtr);
Tcl_IncrRefCount(commandPtr);
}
Tcl_AppendToObj(commandPtr, "\n", 1);
if (!TclObjCommandComplete(commandPtr)) {
isPtr->prompt = PROMPT_CONTINUE;
goto prompt;
}
isPtr->prompt = PROMPT_START;
Tcl_GetStringFromObj(commandPtr, &length);
Tcl_SetObjLength(commandPtr, --length);
/*
* Disable the stdin channel handler while evaluating the command;
* otherwise if the command re-enters the event loop we might process
* commands from stdin before the current command is finished. Among other
* things, this will trash the text of the command being evaluated.
*/
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 != NULL) {
Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc, isPtr);
}
if (code != TCL_OK) {
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);
chan = Tcl_GetStdChannel(TCL_STDOUT);
Tcl_IncrRefCount(resultPtr);
Tcl_GetStringFromObj(resultPtr, &length);
if ((length > 0) && (chan != NULL)) {
Tcl_WriteObj(chan, resultPtr);
Tcl_WriteChars(chan, "\n", 1);
}
Tcl_DecrRefCount(resultPtr);
}
/*
* If a tty stdin is still around, output a prompt.
*/
prompt:
if (isPtr->tty && (isPtr->input != NULL)) {
Prompt(interp, isPtr);
isPtr->input = Tcl_GetStdChannel(TCL_STDIN);
}
}
/* ARGSUSED */
int
Tcl_GetsObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_Channel chan; /* The channel to read from. */
int lineLen; /* Length of line just read. */
int mode; /* Mode in which channel is opened. */
Tcl_Obj *linePtr, *chanObjPtr;
if ((objc != 2) && (objc != 3)) {
Tcl_WrongNumArgs(interp, 1, objv, "channelId ?varName?");
return TCL_ERROR;
}
chanObjPtr = objv[1];
if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
return TCL_ERROR;
}
if ((mode & TCL_READABLE) == 0) {
Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
"\" wasn't opened for reading", NULL);
return TCL_ERROR;
}
linePtr = Tcl_NewObj();
lineLen = Tcl_GetsObj(chan, linePtr);
if (lineLen < 0) {
if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) {
Tcl_DecrRefCount(linePtr);
/*
* TIP #219. Capture error messages put by the driver into the
* bypass area and put them into the regular interpreter result.
* Fall back to the regular message if nothing was found in the
* bypass.
*/
if (!TclChanCaughtErrorBypass(interp, chan)) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "error reading \"",
TclGetString(chanObjPtr), "\": ",
Tcl_PosixError(interp), NULL);
}
return TCL_ERROR;
}
lineLen = -1;
}
if (objc == 3) {
if (Tcl_ObjSetVar2(interp, objv[2], NULL, linePtr,
TCL_LEAVE_ERR_MSG) == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewIntObj(lineLen));
return TCL_OK;
} else {
Tcl_SetObjResult(interp, linePtr);
}
return TCL_OK;
}
void
Tcl_MainEx(
int argc, /* Number of arguments. */
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, *appName;
const char *encodingName = NULL;
int code, exitCode = 0;
Tcl_MainLoopProc *mainLoopProc;
Tcl_Channel chan;
InteractiveState is;
TclpSetInitialEncodings();
TclpFindExecutable((const char *)argv[0]);
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
* encoding.
*/
if (NULL == Tcl_GetStartupScript(NULL)) {
/*
* Check whether first 3 args (argv[1] - argv[3]) look like
* -encoding ENCODING FILENAME
* or like
* FILENAME
*/
if ((argc > 3) && (0 == _tcscmp(TEXT("-encoding"), argv[1]))
&& ('-' != 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(NewNativeObj(argv[1], -1), NULL);
argc--;
argv++;
}
}
path = Tcl_GetStartupScript(&encodingName);
if (path == NULL) {
appName = NewNativeObj(argv[0], -1);
} else {
appName = path;
}
Tcl_SetVar2Ex(interp, "argv0", NULL, appName, TCL_GLOBAL_ONLY);
argc--;
argv++;
Tcl_SetVar2Ex(interp, "argc", NULL, Tcl_NewIntObj(argc), TCL_GLOBAL_ONLY);
argvPtr = Tcl_NewListObj(0, NULL);
while (argc--) {
Tcl_ListObjAppendElement(NULL, argvPtr, NewNativeObj(*argv++, -1));
}
Tcl_SetVar2Ex(interp, "argv", NULL, argvPtr, TCL_GLOBAL_ONLY);
/*
* Set the "tcl_interactive" variable.
*/
is.tty = isatty(0);
Tcl_SetVar2Ex(interp, "tcl_interactive", NULL,
Tcl_NewIntObj(!path && is.tty), TCL_GLOBAL_ONLY);
/*
* Invoke application-specific initialization.
*/
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(chan, Tcl_GetObjResult(interp));
Tcl_WriteChars(chan, "\n", 1);
}
}
if (Tcl_InterpDeleted(interp)) {
goto done;
}
if (Tcl_LimitExceeded(interp)) {
goto done;
}
if (TclFullFinalizationRequested()) {
/*
* Arrange for final deletion of the main interp
*/
/* ARGH Munchhausen effect */
Tcl_CreateExitHandler(FreeMainInterp, interp);
}
/*
* 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) {
chan = Tcl_GetStdChannel(TCL_STDERR);
if (chan) {
Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);
Tcl_Obj *keyPtr, *valuePtr;
TclNewLiteralStringObj(keyPtr, "-errorinfo");
Tcl_IncrRefCount(keyPtr);
Tcl_DictObjGet(NULL, options, keyPtr, &valuePtr);
Tcl_DecrRefCount(keyPtr);
if (valuePtr) {
Tcl_WriteObj(chan, valuePtr);
}
Tcl_WriteChars(chan, "\n", 1);
Tcl_DecrRefCount(options);
}
exitCode = 1;
}
goto done;
}
/*
* We're running interactively. Source a user-specific startup file if the
* application specified one and if the file exists.
*/
Tcl_SourceRCFile(interp);
if (Tcl_LimitExceeded(interp)) {
goto done;
}
/*
* Process commands from stdin until there's an end-of-file. Note that we
* need to fetch the standard channels again after every eval, since they
* may have been changed.
*/
Tcl_IncrRefCount(is.commandPtr);
/*
* Get a new value for tty if anyone writes to ::tcl_interactive
*/
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) {
int length;
if (is.tty) {
Prompt(interp, &is);
if (Tcl_InterpDeleted(interp)) {
break;
}
if (Tcl_LimitExceeded(interp)) {
break;
}
is.input = Tcl_GetStdChannel(TCL_STDIN);
if (is.input == NULL) {
break;
}
}
if (Tcl_IsShared(is.commandPtr)) {
Tcl_DecrRefCount(is.commandPtr);
is.commandPtr = Tcl_DuplicateObj(is.commandPtr);
Tcl_IncrRefCount(is.commandPtr);
}
length = Tcl_GetsObj(is.input, is.commandPtr);
if (length < 0) {
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.
* 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.
*/
continue;
}
/*
* Either EOF, or an error on stdin; we're done
*/
break;
}
/*
* 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(is.commandPtr)) {
Tcl_DecrRefCount(is.commandPtr);
is.commandPtr = Tcl_DuplicateObj(is.commandPtr);
Tcl_IncrRefCount(is.commandPtr);
}
Tcl_AppendToObj(is.commandPtr, "\n", 1);
if (!TclObjCommandComplete(is.commandPtr)) {
is.prompt = PROMPT_CONTINUE;
continue;
}
is.prompt = PROMPT_START;
/*
* The final newline is syntactically redundant, and causes some
* error messages troubles deeper in, so lop it back off.
*/
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) {
chan = Tcl_GetStdChannel(TCL_STDERR);
if (chan) {
Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
Tcl_WriteChars(chan, "\n", 1);
}
} else if (is.tty) {
resultPtr = Tcl_GetObjResult(interp);
Tcl_IncrRefCount(resultPtr);
Tcl_GetStringFromObj(resultPtr, &length);
chan = Tcl_GetStdChannel(TCL_STDOUT);
if ((length > 0) && chan) {
Tcl_WriteObj(chan, resultPtr);
Tcl_WriteChars(chan, "\n", 1);
}
Tcl_DecrRefCount(resultPtr);
}
} else { /* (mainLoopProc != NULL) */
/*
* If a main loop has been defined while running interactively, we
* want to start a fileevent based prompt by establishing a
* channel handler for stdin.
*/
if (is.input) {
if (is.tty) {
Prompt(interp, &is);
}
Tcl_CreateChannelHandler(is.input, TCL_READABLE,
StdinProc, &is);
}
mainLoopProc();
Tcl_SetMainLoop(NULL);
if (is.input) {
Tcl_DeleteChannelHandler(is.input, StdinProc, &is);
}
is.input = Tcl_GetStdChannel(TCL_STDIN);
}
/*
* This code here only for the (unsupported and deprecated) [checkmem]
* command.
*/
#ifdef TCL_MEM_DEBUG
if (tclMemDumpFileName != NULL) {
Tcl_SetMainLoop(NULL);
Tcl_DeleteInterp(interp);
}
#endif /* TCL_MEM_DEBUG */
}
done:
mainLoopProc = TclGetMainLoop();
if ((exitCode == 0) && mainLoopProc && !Tcl_LimitExceeded(interp)) {
/*
* If everything has gone OK so far, call the main loop proc, if it
* exists. Packages (like Tk) can set it to start processing events at
* this point.
*/
mainLoopProc();
Tcl_SetMainLoop(NULL);
}
if (is.commandPtr != NULL) {
Tcl_DecrRefCount(is.commandPtr);
}
/*
* Rather than calling exit, invoke the "exit" command so that users can
* replace "exit" with some other command to do additional cleanup on
* exit. The Tcl_EvalObjEx call should never return.
*/
if (!Tcl_InterpDeleted(interp) && !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.
*/
Tcl_Exit(exitCode);
}
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_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]);
interp = Tcl_CreateInterp();
Tcl_InitMemory(interp);
/*
* If the application has not already set a startup script, parse the
* first few command line arguments to determine the script path and
* encoding.
*/
if (NULL == Tcl_GetStartupScript(NULL)) {
/*
* Check whether first 3 args (argv[1] - argv[3]) look like
* -encoding ENCODING FILENAME
* or like
* FILENAME
*/
if ((argc > 3) && (0 == strcmp("-encoding", argv[1]))
&& ('-' != argv[3][0])) {
Tcl_SetStartupScript(Tcl_NewStringObj(argv[3], -1), argv[2]);
argc -= 3;
argv += 3;
} else if ((argc > 1) && ('-' != argv[1][0])) {
Tcl_SetStartupScript(Tcl_NewStringObj(argv[1], -1), NULL);
argc--;
argv++;
}
}
path = Tcl_GetStartupScript(&encodingName);
if (path == NULL) {
Tcl_ExternalToUtfDString(NULL, argv[0], -1, &appName);
} 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);
}
Tcl_SetVar(interp, "argv0", Tcl_DStringValue(&appName), TCL_GLOBAL_ONLY);
Tcl_DStringFree(&appName);
argc--;
argv++;
Tcl_SetVar2Ex(interp, "argc", NULL, Tcl_NewIntObj(argc), TCL_GLOBAL_ONLY);
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_SetVar2Ex(interp, "argv", NULL, argvPtr, TCL_GLOBAL_ONLY);
/*
* Set the "tcl_interactive" variable.
*/
tty = isatty(0);
Tcl_SetVar(interp, "tcl_interactive", ((path == NULL) && tty) ? "1" : "0",
TCL_GLOBAL_ONLY);
/*
* Invoke application-specific initialization.
*/
Tcl_Preserve(interp);
if (appInitProc(interp) != TCL_OK) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
Tcl_WriteChars(errChannel,
"application-specific initialization failed: ", -1);
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
}
if (Tcl_InterpDeleted(interp)) {
goto done;
}
if (Tcl_LimitExceeded(interp)) {
goto done;
}
/*
* If a script file was specified then just source that file and quit.
* Must fetch it again, as the appInitProc might have reset it.
*/
path = Tcl_GetStartupScript(&encodingName);
if (path != NULL) {
code = Tcl_FSEvalFileEx(interp, path, encodingName);
if (code != TCL_OK) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);
Tcl_Obj *keyPtr, *valuePtr;
TclNewLiteralStringObj(keyPtr, "-errorinfo");
Tcl_IncrRefCount(keyPtr);
Tcl_DictObjGet(NULL, options, keyPtr, &valuePtr);
Tcl_DecrRefCount(keyPtr);
if (valuePtr) {
Tcl_WriteObj(errChannel, valuePtr);
}
Tcl_WriteChars(errChannel, "\n", 1);
}
exitCode = 1;
}
goto done;
}
/*
* We're running interactively. Source a user-specific startup file if the
* application specified one and if the file exists.
*/
Tcl_SourceRCFile(interp);
if (Tcl_LimitExceeded(interp)) {
goto done;
}
/*
* Process commands from stdin until there's an end-of-file. Note that we
* need to fetch the standard channels again after every eval, since they
* may have been changed.
*/
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(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 != NULL) && !Tcl_InterpDeleted(interp)) {
if (mainLoopProc == NULL) {
if (tty) {
Prompt(interp, &prompt);
if (Tcl_InterpDeleted(interp)) {
break;
}
if (Tcl_LimitExceeded(interp)) {
break;
}
inChannel = Tcl_GetStdChannel(TCL_STDIN);
if (inChannel == NULL) {
break;
}
}
if (Tcl_IsShared(commandPtr)) {
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_DuplicateObj(commandPtr);
Tcl_IncrRefCount(commandPtr);
}
length = Tcl_GetsObj(inChannel, commandPtr);
if (length < 0) {
if (Tcl_InputBlocked(inChannel)) {
/*
* This can only happen if stdin has been set to
* 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.
*/
continue;
}
/*
* Either EOF, or an error on stdin; we're done
*/
break;
}
/*
* 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);
}
Tcl_AppendToObj(commandPtr, "\n", 1);
if (!TclObjCommandComplete(commandPtr)) {
prompt = PROMPT_CONTINUE;
continue;
}
prompt = PROMPT_START;
/*
* 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);
if (code != TCL_OK) {
if (errChannel) {
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
} else if (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);
}
Tcl_DecrRefCount(resultPtr);
}
} else { /* (mainLoopProc != NULL) */
/*
* If a main loop has been defined while running interactively, we
* want to start a fileevent based prompt by establishing a
* channel handler for stdin.
*/
InteractiveState *isPtr = NULL;
if (inChannel) {
if (tty) {
Prompt(interp, &prompt);
}
isPtr = (InteractiveState *)
ckalloc(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,
isPtr);
}
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 != NULL) {
Tcl_DeleteChannelHandler(isPtr->input, StdinProc, isPtr);
}
ckfree((char *) isPtr);
}
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
errChannel = Tcl_GetStdChannel(TCL_STDERR);
}
#ifdef TCL_MEM_DEBUG
/*
* This code here only for the (unsupported and deprecated) [checkmem]
* command.
*/
if (tclMemDumpFileName != NULL) {
mainLoopProc = NULL;
Tcl_DeleteInterp(interp);
}
#endif
}
done:
if ((exitCode == 0) && (mainLoopProc != NULL)
&& !Tcl_LimitExceeded(interp)) {
/*
* If everything has gone OK so far, call the main loop proc, if it
* exists. Packages (like Tk) can set it to start processing events at
* this point.
*/
mainLoopProc();
mainLoopProc = NULL;
}
if (commandPtr != NULL) {
Tcl_DecrRefCount(commandPtr);
}
/*
* Rather than calling exit, invoke the "exit" command so that users can
* replace "exit" with some other command to do additional cleanup on
* exit. The Tcl_EvalObjEx call should never return.
*/
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(interp);
Tcl_Exit(exitCode);
}
int TclTextInterp::evalString(const char *s) {
#if defined(VMD_NANOHUB)
if (Tcl_Eval(interp, s) != TCL_OK) {
#else
if (Tcl_RecordAndEval(interp, s, 0) != TCL_OK) {
#endif
// Don't print error message if there's nothing to show.
if (strlen(Tcl_GetStringResult(interp)))
msgErr << Tcl_GetStringResult(interp) << sendmsg;
return FALSE;
}
return TRUE;
}
void TclTextInterp::setString(const char *name, const char *val) {
if (interp)
Tcl_SetVar(interp, name, val,
TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG);
}
void TclTextInterp::setMap(const char *name, const char *key,
const char *val) {
if (interp)
Tcl_SetVar2(interp, name, key, val,
TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG);
}
// There's a fair amount of code duplication between doEvent and evalFile,
// maybe these could be combined somehow, say by having TclTextInterp keep
// track of its Tcl_Channel objects.
//
// Side note: Reading line-by-line gives different Tcl semantics than
// just calling Tcl_EvalFile. Shell commands (e.g., stty) are properly
// parsed when read line-by-line and passed to Tcl_RecordAndEval, but are
// unrecognized when contained in a file read by Tcl_EvalFile. I would
// consider this a bug.
int TclTextInterp::evalFile(const char *fname) {
Tcl_Channel inchannel = Tcl_OpenFileChannel(interp, fname, "r", 0644);
Tcl_Channel outchannel = Tcl_GetStdChannel(TCL_STDOUT);
if (inchannel == NULL) {
msgErr << "Error opening file " << fname << sendmsg;
msgErr << Tcl_GetStringResult(interp) << sendmsg;
return 1;
}
Tcl_Obj *cmdPtr = Tcl_NewObj();
Tcl_IncrRefCount(cmdPtr);
int length = 0;
while ((length = Tcl_GetsObj(inchannel, cmdPtr)) >= 0) {
Tcl_AppendToObj(cmdPtr, "\n", 1);
char *stringrep = Tcl_GetStringFromObj(cmdPtr, NULL);
if (!Tcl_CommandComplete(stringrep)) {
continue;
}
// check if "exit" was called
if (app->exitFlag) break;
#if defined(VMD_NANOHUB)
Tcl_EvalObjEx(interp, cmdPtr, 0);
#else
Tcl_RecordAndEvalObj(interp, cmdPtr, 0);
#endif
#if TCL_MINOR_VERSION >= 4
Tcl_DecrRefCount(cmdPtr);
cmdPtr = Tcl_NewObj();
Tcl_IncrRefCount(cmdPtr);
#else
// XXX this crashes Tcl 8.5.[46] with an internal panic
Tcl_SetObjLength(cmdPtr, 0);
#endif
// XXX this makes sure the display is updated
// after each line read from the file or pipe
// So, this is also where we'd optimise reading multiple
// lines at once
//
// In VR modes (CAVE, FreeVR, VR Juggler) the draw method will
// not be called from app->display_update(), so multiple lines
// of input could be combined in one frame, if possible
app->display_update();
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
char *bytes = Tcl_GetStringFromObj(resultPtr, &length);
#if defined(VMDTKCON)
if (length > 0) {
vmdcon_append(VMDCON_ALWAYS, bytes,length);
vmdcon_append(VMDCON_ALWAYS, "\n", 1);
}
vmdcon_purge();
#else
if (length > 0) {
#if TCL_MINOR_VERSION >= 4
Tcl_WriteChars(outchannel, bytes, length);
Tcl_WriteChars(outchannel, "\n", 1);
#else
Tcl_Write(outchannel, bytes, length);
Tcl_Write(outchannel, "\n", 1);
#endif
}
Tcl_Flush(outchannel);
#endif
}
Tcl_Close(interp, inchannel);
Tcl_DecrRefCount(cmdPtr);
return 0;
}
void TclTextInterp::doEvent() {
if (!done_waiting())
return;
// no recursive calls to TclEvalObj; this prevents
// display update ui from messing up Tcl.
if (callLevel)
return;
Tcl_Channel inChannel = Tcl_GetStdChannel(TCL_STDIN);
Tcl_Channel outChannel = Tcl_GetStdChannel(TCL_STDOUT);
if (needPrompt && consoleisatty) {
#if TCL_MINOR_VERSION >= 4
if (gotPartial) {
Tcl_WriteChars(outChannel, "? ", -1);
} else {
Tcl_WriteChars(outChannel, VMD_CMD_PROMPT, -1);
}
#else
if (gotPartial) {
Tcl_Write(outChannel, "? ", -1);
} else {
Tcl_Write(outChannel, VMD_CMD_PROMPT, -1);
}
#endif
#if defined(VMDTKCON)
vmdcon_purge();
#endif
Tcl_Flush(outChannel);
needPrompt = 0;
}
#if defined(VMD_NANOHUB)
return;
#endif
//
// MPI builds of VMD cannot try to read any command input from the
// console because it creates shutdown problems, at least with MPICH.
// File-based command input is fine however.
//
// For the time being, the Android builds won't attempt to get any
// console input. Any input we're going to get is going to come via
// some means other than stdin, such as a network socket, text box, etc.
//
if (ignorestdin)
return;
if (!vmd_check_stdin())
return;
//
// event loop based on tclMain.c
//
// According to the Tcl docs, GetsObj returns -1 on error or EOF.
int length = Tcl_GetsObj(inChannel, commandPtr);
if (length < 0) {
if (Tcl_Eof(inChannel)) {
// exit if we're not a tty, or if eofexit is set
if ((!consoleisatty) || app->get_eofexit())
app->VMDexit("", 0, 0);
} else {
msgErr << "Error reading Tcl input: " << Tcl_ErrnoMsg(Tcl_GetErrno())
<< sendmsg;
}
return;
}
needPrompt = 1;
// add the newline removed by Tcl_GetsObj
Tcl_AppendToObj(commandPtr, "\n", 1);
char *stringrep = Tcl_GetStringFromObj(commandPtr, NULL);
if (!Tcl_CommandComplete(stringrep)) {
gotPartial = 1;
return;
}
gotPartial = 0;
callLevel++;
#if defined(VMD_NANOHUB)
Tcl_EvalObjEx(interp, commandPtr, 0);
#else
Tcl_RecordAndEvalObj(interp, commandPtr, 0);
#endif
callLevel--;
#if TCL_MINOR_VERSION >= 4
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
#else
// XXX this crashes Tcl 8.5.[46] with an internal panic
Tcl_SetObjLength(commandPtr, 0);
#endif
// if ok, send to stdout; if not, send to stderr
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
char *bytes = Tcl_GetStringFromObj(resultPtr, &length);
#if defined(VMDTKCON)
if (length > 0) {
vmdcon_append(VMDCON_ALWAYS, bytes,length);
vmdcon_append(VMDCON_ALWAYS, "\n", 1);
}
vmdcon_purge();
#else
if (length > 0) {
#if TCL_MINOR_VERSION >= 4
Tcl_WriteChars(outChannel, bytes, length);
Tcl_WriteChars(outChannel, "\n", 1);
#else
Tcl_Write(outChannel, bytes, length);
Tcl_Write(outChannel, "\n", 1);
#endif
}
Tcl_Flush(outChannel);
#endif
}
/*
** This routine runs first.
*/
int main(int argc, char **argv){
Tcl_Interp *interp;
char *args;
char buf[100];
int tty;
char TCLdir[20];
char TKdir[20];
char autopath[20];
char sourceCmd[80];
#ifdef WITHOUT_TK
Tcl_Obj *resultPtr;
Tcl_Obj *commandPtr = NULL;
char buffer[1000];
int code, gotPartial, length;
Tcl_Channel inChannel, outChannel, errChannel;
#endif
/* Create a Tcl interpreter
*/
Tcl_FindExecutable(argv[0]);
interp = Tcl_CreateInterp();
if( Tcl_PkgRequire(interp, "Tcl", TCL_VERSION, 1)==0 ){
return 1;
}
args = Tcl_Merge(argc-1, (CONST84 char * CONST *)argv+1);
Tcl_SetVar(interp, "argv", args, TCL_GLOBAL_ONLY);
ckfree(args);
sprintf(buf, "%d", argc-1);
Tcl_SetVar(interp, "argc", buf, TCL_GLOBAL_ONLY);
Tcl_SetVar(interp, "argv0", argv[0], TCL_GLOBAL_ONLY);
tty = isatty(0);
Tcl_SetVar(interp, "tcl_interactive", "0", TCL_GLOBAL_ONLY);
/* We have to initialize the virtual filesystem before calling
** Tcl_Init(). Otherwise, Tcl_Init() will not be able to find
** its startup script files.
*/
Zvfs_Init(interp);
Tcl_SetVar(interp, "extname", "", TCL_GLOBAL_ONLY);
Zvfs_Mount(interp, (char *)Tcl_GetNameOfExecutable(), "/");
sprintf(TCLdir, "%s/tcl", mountPt);
Tcl_SetVar2(interp, "env", "TCL_LIBRARY", TCLdir, TCL_GLOBAL_ONLY);
sprintf(TKdir, "%s/tk", mountPt);
Tcl_SetVar2(interp, "env", "TK_LIBRARY", TKdir, TCL_GLOBAL_ONLY);
/* Initialize Tcl and Tk
*/
if( Tcl_Init(interp) ) return TCL_ERROR;
sprintf(autopath, " %s", TCLdir);
Tcl_SetVar(interp, "auto_path", autopath, TCL_GLOBAL_ONLY | TCL_APPEND_VALUE);
Tcl_SetVar(interp, "tcl_libPath", TCLdir, TCL_GLOBAL_ONLY);
#ifdef WITHOUT_TK
Tcl_SetVar(interp, "extname", "tclsh", TCL_GLOBAL_ONLY);
#else
Tk_InitConsoleChannels(interp);
if ( Tk_Init(interp) ) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp,"Tk", Tk_Init, 0);
Tk_CreateConsoleWindow(interp);
#endif
/* Start up all extensions.
*/
#if defined(__WIN32__)
/* DRL - Do the standard Windows extentions */
if (Registry_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Registry", Registry_Init, 0);
if (Dde_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Dde", Dde_Init, 0);
#endif
#ifndef WITHOUT_TDOM
if (Tdom_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Tdom", Tdom_Init, Tdom_SafeInit);
#endif
#ifndef WITHOUT_TLS
if (Tls_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Tls", Tls_Init, Tls_SafeInit);
#endif
/*
#ifndef WITHOUT_MKZIPLIB
if (Mkziplib_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Mkziplib", Mkziplib_Init, Mkziplib_SafeInit);
#endif
*/
#ifndef WITHOUT_XOTCL
if (Xotcl_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Xotcl", Xotcl_Init, Xotcl_SafeInit);
/*
if (Xotclexpat_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "xotclexpat", Xotclexpat_Init, 0);
*/
/*
if (Xotclsdbm_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
*/
// Tcl_StaticPackage(interp, "xotclsdbm", Xotclsdbm_Init, Xotclsdbm_SafeInit);
/*
if (Xotclgdbm_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
*/
// Tcl_StaticPackage(interp, "xotclgdbm", Xotclgdbm_Init, Xotclgdbm_SafeInit);
#endif
#ifndef WITHOUT_TGDBM
if (Tgdbm_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Tgdbm", Tgdbm_Init, 0);
#endif
#ifndef WITHOUT_THREAD
if (Thread_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
Tcl_StaticPackage(interp, "Thread", Thread_Init, 0);
#endif
#if !defined(WITHOUT_TK) && !defined(WITHOUT_WINICO) && (defined(__WIN32__) || defined(_WIN32))
if (Winico_Init(interp) == TCL_ERROR) return TCL_ERROR;
Tcl_StaticPackage(interp, "Winico", Winico_Init, Winico_SafeInit);
#endif
/* Add some freeWrap commands */
if (Freewrap_Init(interp) == TCL_ERROR) return TCL_ERROR;
/* After all extensions are registered, start up the
** program by running freewrapCmds.tcl.
*/
sprintf(sourceCmd, "source %s/freewrapCmds.tcl", mountPt);
Tcl_Eval(interp, sourceCmd);
#ifndef WITHOUT_TK
/*
* Loop infinitely, waiting for commands to execute. When there
* are no windows left, Tk_MainLoop returns and we exit.
*/
Tk_MainLoop();
Tcl_DeleteInterp(interp);
Tcl_Exit(0);
#else
/*
* Process commands from stdin until there's an end-of-file. Note
* that we need to fetch the standard channels again after every
* eval, since they may have been changed.
*/
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
gotPartial = 0;
while (1) {
if (tty) {
Tcl_Obj *promptCmdPtr;
promptCmdPtr = Tcl_GetVar2Ex(interp,
(gotPartial ? "tcl_prompt2" : "tcl_prompt1"),
NULL, TCL_GLOBAL_ONLY);
if (promptCmdPtr == NULL) {
defaultPrompt:
if (!gotPartial && outChannel) {
Tcl_WriteChars(outChannel, "% ", 2);
}
} else {
code = Tcl_EvalObjEx(interp, promptCmdPtr, 0);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (code != TCL_OK) {
if (errChannel) {
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
Tcl_AddErrorInfo(interp,
"\n (script that generates prompt)");
goto defaultPrompt;
}
}
if (outChannel) {
Tcl_Flush(outChannel);
}
}
if (!inChannel) {
goto done;
}
length = Tcl_GetsObj(inChannel, commandPtr);
if (length < 0) {
goto done;
}
if ((length == 0) && Tcl_Eof(inChannel) && (!gotPartial)) {
goto done;
}
/*
* Add the newline removed by Tcl_GetsObj back to the string.
*/
Tcl_AppendToObj(commandPtr, "\n", 1);
if (!TclObjCommandComplete(commandPtr)) {
gotPartial = 1;
continue;
}
gotPartial = 0;
code = Tcl_RecordAndEvalObj(interp, commandPtr, 0);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
errChannel = Tcl_GetStdChannel(TCL_STDERR);
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
if (code != TCL_OK) {
if (errChannel) {
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
} else if (tty) {
resultPtr = Tcl_GetObjResult(interp);
Tcl_GetStringFromObj(resultPtr, &length);
if ((length > 0) && outChannel) {
Tcl_WriteObj(outChannel, resultPtr);
Tcl_WriteChars(outChannel, "\n", 1);
}
}
}
/*
* Rather than calling exit, invoke the "exit" command so that
* users can replace "exit" with some other command to do additional
* cleanup on exit. The Tcl_Eval call should never return.
*/
done:
if (commandPtr != NULL) {
Tcl_DecrRefCount(commandPtr);
}
sprintf(buffer, "exit %d", 0);
Tcl_Eval(interp, buffer);
#endif
return TCL_OK;
}
int
TclInterpreter::run() {
/*
* If a script file was specified then just source that file
* and quit.
*/
if (tclStartupScriptFileName != NULL) {
code = Tcl_EvalFile(interp, tclStartupScriptFileName);
if (code != TCL_OK) {
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (errChannel) {
/*
* The following statement guarantees that the errorInfo
* variable is set properly.
*/
Tcl_AddErrorInfo(interp, "");
Tcl_WriteObj(errChannel, Tcl_GetVar2Ex(interp, "errorInfo",
NULL, TCL_GLOBAL_ONLY));
Tcl_WriteChars(errChannel, "\n", 1);
}
exitCode = 1;
}
return 0;
}
else {
/*
const char *pwd = getInterpPWD(interp);
simulationInfo.start();
simulationInfo.addInputFile(tclStartupScriptFileName, pwd);
*/
/*
* We're running interactively. Source a user-specific startup
* file if the application specified one and if the file exists.
*/
Tcl_DStringFree(&argString);
Tcl_SourceRCFile(interp);
/*
* Process commands from stdin until there's an end-of-file. Note
* that we need to fetch the standard channels again after every
* eval, since they may have been changed.
*/
/*
if (simulationInfoOutputFilename != 0) {
simulationInfo.start();
}
*/
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
gotPartial = 0;
while (1) {
if (tty) {
Tcl_Obj *promptCmdPtr;
char one[12] = "tcl_prompt1";
char two[12] = "tcl_prompt2";
promptCmdPtr = Tcl_GetVar2Ex(interp,
(gotPartial ? one : two),
NULL, TCL_GLOBAL_ONLY);
if (promptCmdPtr == NULL) {
defaultPrompt:
if (!gotPartial && outChannel) {
Tcl_WriteChars(outChannel, "OpenSees > ", 11);
}
} else {
code = Tcl_EvalObjEx(interp, promptCmdPtr, 0);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
errChannel = Tcl_GetStdChannel(TCL_STDERR);
if (code != TCL_OK) {
if (errChannel) {
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
Tcl_AddErrorInfo(interp,
"\n (script that generates prompt)");
goto defaultPrompt;
}
}
if (outChannel) {
Tcl_Flush(outChannel);
}
}
if (!inChannel) {
return 0;
// goto done;
}
length = Tcl_GetsObj(inChannel, commandPtr);
if (length < 0) {
return 0; //goto done;
}
if ((length == 0) && Tcl_Eof(inChannel) && (!gotPartial)) {
return 0; // goto done;
}
/*
* Add the newline removed by Tcl_GetsObj back to the string.
*/
Tcl_AppendToObj(commandPtr, "\n", 1);
if (!TclObjCommandComplete(commandPtr)) {
gotPartial = 1;
continue;
}
gotPartial = 0;
code = Tcl_RecordAndEvalObj(interp, commandPtr, 0);
inChannel = Tcl_GetStdChannel(TCL_STDIN);
outChannel = Tcl_GetStdChannel(TCL_STDOUT);
errChannel = Tcl_GetStdChannel(TCL_STDERR);
Tcl_DecrRefCount(commandPtr);
commandPtr = Tcl_NewObj();
Tcl_IncrRefCount(commandPtr);
if (code != TCL_OK) {
if (errChannel) {
Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
Tcl_WriteChars(errChannel, "\n", 1);
}
} else if (tty) {
resultPtr = Tcl_GetObjResult(interp);
Tcl_GetStringFromObj(resultPtr, &length);
if ((length > 0) && outChannel) {
Tcl_WriteObj(outChannel, resultPtr);
Tcl_WriteChars(outChannel, "\n", 1);
}
}
#ifdef TCL_MEM_DEBUG
if (tclMemDumpFileName != NULL) {
Tcl_DecrRefCount(commandPtr);
Tcl_DeleteInterp(interp);
Tcl_Exit(0);
}
#endif
}
}
return 0;
}
