/* 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); } }
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); }
/* ** 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; }
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 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; }