diff options
Diffstat (limited to 'generic/tkMain.c')
-rw-r--r-- | generic/tkMain.c | 361 |
1 files changed, 188 insertions, 173 deletions
diff --git a/generic/tkMain.c b/generic/tkMain.c index 74b8557..4d532df 100644 --- a/generic/tkMain.c +++ b/generic/tkMain.c @@ -14,29 +14,78 @@ * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ -#include "tclInt.h" +/** + * On Windows, this file needs to be compiled twice, once with + * TK_ASCII_MAIN defined. This way both Tk_MainEx and Tk_MainExW + * can be implemented, sharing the same source code. + */ +#if defined(TK_ASCII_MAIN) +# ifdef UNICODE +# undef UNICODE +# undef _UNICODE +# else +# define UNICODE +# define _UNICODE +# endif +#endif + #include "tkInt.h" +#include <ctype.h> +#include <stdio.h> +#include <string.h> +#ifdef NO_STDLIB_H +# include "../compat/stdlib.h" +#else +# include <stdlib.h> +#endif + +extern int TkCygwinMainEx(int, char **, Tcl_AppInitProc *, Tcl_Interp *); + +/* + * The default prompt used when the user has not overridden it. + */ + +#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. + */ #ifdef __WIN32__ -#include "tkWinInt.h" -#include "../win/tclWinPort.h" +# include "tclInt.h" +# include "tkWinInt.h" +#else +# define TCHAR char +# define TEXT(arg) arg +# define _tcscmp strcmp +# define _tcslen strlen +# define _tcsncmp strncmp #endif + #ifdef MAC_OSX_TK #include "tkMacOSXInt.h" #endif -extern int TkCygwinMainEx(int, char **, Tcl_AppInitProc *, Tcl_Interp *); - -typedef struct ThreadSpecificData { - Tcl_Interp *interp; /* Interpreter for this thread. */ - Tcl_DString command; /* Used to assemble lines of terminal input - * into Tcl commands. */ - Tcl_DString line; /* Used to read the next line from the - * terminal input. */ - int tty; /* Non-zero means standard input is a - * terminal-like device. Zero means it's a - * file. */ -} ThreadSpecificData; -static Tcl_ThreadDataKey dataKey; +/* + * 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 @@ -53,9 +102,9 @@ static int WinIsTty(int fd) { /* * For now, under Windows, we assume we are not running as a console mode - * app, so we need to use the GUI console. In order to enable this, we - * always claim to be running on a tty. This probably isn't the right - * way to do it. + * app, so we need to use the GUI console. In order to enable this, we + * always claim to be running on a tty. This probably isn't the right way + * to do it. */ #if !defined(STATIC_BUILD) @@ -65,35 +114,38 @@ static int WinIsTty(int fd) { } #endif handle = GetStdHandle(STD_INPUT_HANDLE + fd); - - if ((handle == INVALID_HANDLE_VALUE) || (handle == 0) - || (GetFileType(handle) == FILE_TYPE_UNKNOWN)) { /* - * If it's a bad or closed handle, then it's been connected - * to a wish console window. + * If it's a bad or closed handle, then it's been connected to a wish + * console window. A character file handle is a tty by definition. */ - - return 1; - } else if (GetFileType(handle) == FILE_TYPE_CHAR) { - /* - * A character file handle is a tty by definition. - */ - - return 1; - } else { - return 0; - } + return (handle == INVALID_HANDLE_VALUE) || (handle == 0) + || (GetFileType(handle) == FILE_TYPE_UNKNOWN) + || (GetFileType(handle) == FILE_TYPE_CHAR); } #else extern int isatty(int fd); -extern char * strrchr(CONST char *string, int c); #endif +typedef struct InteractiveState { + Tcl_Channel input; /* The standard input channel from which lines + * are read. */ + int tty; /* Non-zero means standard input is a + * terminal-like device. Zero means it's a + * file. */ + Tcl_DString command; /* Used to assemble lines of terminal input + * into Tcl commands. */ + Tcl_DString line; /* Used to read the next line from the + * terminal input. */ + int gotPartial; + Tcl_Interp *interp; /* Interpreter that evaluates interactive + * commands. */ +} InteractiveState; + /* * Forward declarations for functions defined later in this file. */ -static void Prompt(Tcl_Interp *interp, int partial); +static void Prompt(Tcl_Interp *interp, InteractiveState *isPtr); static void StdinProc(ClientData clientData, int mask); /* @@ -105,7 +157,7 @@ static void StdinProc(ClientData clientData, int mask); * * Results: * None. This function never returns (it exits the process when it's - * done. + * done). * * Side effects: * This function initializes the Tk world and then starts interpreting @@ -114,33 +166,33 @@ static void StdinProc(ClientData clientData, int mask); * *---------------------------------------------------------------------- */ + void Tk_MainEx( int argc, /* Number of arguments. */ - char **argv, /* Array of argument strings. */ + 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, *argvPtr; - CONST char *encodingName; + Tcl_Obj *path, *argvPtr, *appName; + const char *encodingName; int code, nullStdin = 0; - Tcl_Channel inChannel, outChannel; - ThreadSpecificData *tsdPtr; - Tcl_DString appName; + Tcl_Channel chan; + InteractiveState is; /* - * Ensure that we are getting the matching version of Tcl. This is really + * Ensure that we are getting a compatible version of Tcl. This is really * only an issue when Tk is loaded dynamically. */ - if (Tcl_InitStubs(interp, "8.5", 0) == NULL) { + if (Tcl_InitStubs(interp, "8.6", 0) == NULL) { abort(); } -#if defined(__WIN32__) && !defined(__WIN64__) && !defined(STATIC_BUILD) +#if defined(__WIN32__) && !defined(__WIN64__) && !defined(UNICODE) && !defined(STATIC_BUILD) if (tclStubsPtr->reserved9) { /* We are running win32 Tk under Cygwin, so let's check @@ -157,7 +209,7 @@ Tk_MainEx( int i; for (i = 1; i < argc; ++i) { - if (!strcmp(argv[i], "-display")) { + if (!_tcscmp(argv[i], TEXT("-display"))) { goto loadCygwinTk; } } @@ -165,19 +217,13 @@ Tk_MainEx( } #endif - tsdPtr = (ThreadSpecificData *) - Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); + Tcl_InitMemory(interp); - Tcl_FindExecutable(argv[0]); - tsdPtr->interp = interp; - Tcl_Preserve((ClientData) interp); + is.interp = interp; + is.gotPartial = 0; + Tcl_Preserve(interp); -#if defined(__WIN32__) && !defined(STATIC_BUILD) - if (!tclStubsPtr->reserved9) { - /* Only initialize console when not running under cygwin */ - Tk_InitConsoleChannels(interp); - } -#elif defined(__WIN32__) +#if defined(__WIN32__) && !defined(__CYGWIN__) Tk_InitConsoleChannels(interp); #endif @@ -187,10 +233,6 @@ Tk_MainEx( } #endif -#ifdef TCL_MEM_DEBUG - Tcl_InitMemory(interp); -#endif - /* * If the application has not already set a startup script, parse the * first few command line arguments to determine the script path and @@ -202,44 +244,40 @@ Tk_MainEx( /* * Check whether first 3 args (argv[1] - argv[3]) look like - * -encoding ENCODING FILENAME + * -encoding ENCODING FILENAME * or like - * FILENAME + * FILENAME * or like - * -file FILENAME (ancient history support only) + * -file FILENAME (ancient history support only) */ - 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++; - } else if ((argc > 2) && (length = strlen(argv[1])) - && (length > 1) && (0 == strncmp("-file", argv[1], length)) - && ('-' != argv[2][0])) { - Tcl_SetStartupScript(Tcl_NewStringObj(argv[2], -1), NULL); + } else if ((argc > 2) && (length = _tcslen(argv[1])) + && (length > 1) && (0 == _tcsncmp(TEXT("-file"), argv[1], length)) + && (TEXT('-') != argv[2][0])) { + Tcl_SetStartupScript(NewNativeObj(argv[2], -1), NULL); argc -= 2; argv += 2; } } path = Tcl_GetStartupScript(&encodingName); - if (NULL == path) { - Tcl_ExternalToUtfDString(NULL, argv[0], -1, &appName); + if (path == NULL) { + appName = NewNativeObj(argv[0], -1); } else { - int numBytes; - CONST char *pathName = Tcl_GetStringFromObj(path, &numBytes); - - Tcl_ExternalToUtfDString(NULL, pathName, numBytes, &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++; @@ -247,12 +285,7 @@ Tk_MainEx( 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); @@ -260,32 +293,30 @@ Tk_MainEx( * Set the "tcl_interactive" variable. */ - tsdPtr->tty = isatty(0); - + is.tty = isatty(0); #if defined(MAC_OSX_TK) /* * On TkAqua, if we don't have a TTY and stdin is a special character file * of length 0, (e.g. /dev/null, which is what Finder sets when double * clicking Wish) then use the GUI console. */ - - if (!tsdPtr->tty) { + + if (!is.tty) { struct stat st; nullStdin = fstat(0, &st) || (S_ISCHR(st.st_mode) && !st.st_blocks); } #endif - Tcl_SetVar(interp, "tcl_interactive", - ((path == NULL) && (tsdPtr->tty || nullStdin)) ? "1" : "0", - TCL_GLOBAL_ONLY); + Tcl_SetVar2Ex(interp, "tcl_interactive", NULL, + Tcl_NewIntObj(!path && (is.tty || nullStdin)), TCL_GLOBAL_ONLY); /* * Invoke application-specific initialization. */ - if ((*appInitProc)(interp) != TCL_OK) { + if (appInitProc(interp) != TCL_OK) { TkpDisplayWarning(Tcl_GetStringResult(interp), - "Application initialization failed"); + "application-specific initialization failed"); } /* @@ -309,7 +340,7 @@ Tk_MainEx( Tcl_DeleteInterp(interp); Tcl_Exit(1); } - tsdPtr->tty = 0; + is.tty = 0; } else { /* @@ -322,22 +353,21 @@ Tk_MainEx( * Establish a channel handler for stdin. */ - inChannel = Tcl_GetStdChannel(TCL_STDIN); - if (inChannel) { - Tcl_CreateChannelHandler(inChannel, TCL_READABLE, StdinProc, - (ClientData) inChannel); + is.input = Tcl_GetStdChannel(TCL_STDIN); + if (is.input) { + Tcl_CreateChannelHandler(is.input, TCL_READABLE, StdinProc, &is); } - if (tsdPtr->tty) { - Prompt(interp, 0); + if (is.tty) { + Prompt(interp, &is); } } - outChannel = Tcl_GetStdChannel(TCL_STDOUT); - if (outChannel) { - Tcl_Flush(outChannel); + chan = Tcl_GetStdChannel(TCL_STDOUT); + if (chan) { + Tcl_Flush(chan); } - Tcl_DStringInit(&tsdPtr->command); - Tcl_DStringInit(&tsdPtr->line); + Tcl_DStringInit(&is.command); + Tcl_DStringInit(&is.line); Tcl_ResetResult(interp); /* @@ -347,7 +377,7 @@ Tk_MainEx( Tk_MainLoop(); Tcl_DeleteInterp(interp); - Tcl_Release((ClientData) interp); + Tcl_Release(interp); Tcl_SetStartupScript(NULL, NULL); Tcl_Exit(0); } @@ -374,37 +404,34 @@ Tk_MainEx( /* ARGSUSED */ static void StdinProc( - ClientData clientData, /* Not used. */ + ClientData clientData, /* The state of interactive cmd line */ int mask) /* Not used. */ { - static int gotPartial = 0; char *cmd; int code, count; - Tcl_Channel chan = (Tcl_Channel) clientData; - ThreadSpecificData *tsdPtr = (ThreadSpecificData *) - Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); - Tcl_Interp *interp = tsdPtr->interp; + InteractiveState *isPtr = clientData; + Tcl_Channel chan = isPtr->input; + Tcl_Interp *interp = isPtr->interp; - count = Tcl_Gets(chan, &tsdPtr->line); + count = Tcl_Gets(chan, &isPtr->line); - if (count < 0 && !gotPartial) { - if (tsdPtr->tty) { + if (count < 0 && !isPtr->gotPartial) { + if (isPtr->tty) { Tcl_Exit(0); } else { - Tcl_DeleteChannelHandler(chan, StdinProc, (ClientData) chan); + Tcl_DeleteChannelHandler(chan, StdinProc, isPtr); } return; } - (void) Tcl_DStringAppend(&tsdPtr->command, Tcl_DStringValue( - &tsdPtr->line), -1); - cmd = Tcl_DStringAppend(&tsdPtr->command, "\n", -1); - Tcl_DStringFree(&tsdPtr->line); + Tcl_DStringAppend(&isPtr->command, Tcl_DStringValue(&isPtr->line), -1); + cmd = Tcl_DStringAppend(&isPtr->command, "\n", -1); + Tcl_DStringFree(&isPtr->line); if (!Tcl_CommandComplete(cmd)) { - gotPartial = 1; + isPtr->gotPartial = 1; goto prompt; } - gotPartial = 0; + isPtr->gotPartial = 0; /* * Disable the stdin channel handler while evaluating the command; @@ -413,18 +440,17 @@ StdinProc( * things, this will trash the text of the command being evaluated. */ - Tcl_CreateChannelHandler(chan, 0, StdinProc, (ClientData) chan); + Tcl_CreateChannelHandler(chan, 0, StdinProc, isPtr); code = Tcl_RecordAndEval(interp, cmd, TCL_EVAL_GLOBAL); - chan = Tcl_GetStdChannel(TCL_STDIN); - if (chan) { - Tcl_CreateChannelHandler(chan, TCL_READABLE, StdinProc, - (ClientData) chan); + isPtr->input = Tcl_GetStdChannel(TCL_STDIN); + if (isPtr->input) { + Tcl_CreateChannelHandler(isPtr->input, TCL_READABLE, StdinProc, isPtr); } - Tcl_DStringFree(&tsdPtr->command); + Tcl_DStringFree(&isPtr->command); if (Tcl_GetStringResult(interp)[0] != '\0') { - if ((code != TCL_OK) || (tsdPtr->tty)) { - chan = Tcl_GetStdChannel(TCL_STDOUT); + if ((code != TCL_OK) || (isPtr->tty)) { + chan = Tcl_GetStdChannel((code != TCL_OK) ? TCL_STDERR : TCL_STDOUT); if (chan) { Tcl_WriteObj(chan, Tcl_GetObjResult(interp)); Tcl_WriteChars(chan, "\n", 1); @@ -433,12 +459,12 @@ StdinProc( } /* - * Output a prompt. + * If a tty stdin is still around, output a prompt. */ prompt: - if (tsdPtr->tty) { - Prompt(interp, gotPartial); + if (isPtr->tty && (isPtr->input != NULL)) { + Prompt(interp, isPtr); } Tcl_ResetResult(interp); } @@ -463,53 +489,42 @@ StdinProc( static void Prompt( Tcl_Interp *interp, /* Interpreter to use for prompting. */ - int partial) /* Non-zero means there already exists a - * partial command, so use the secondary - * prompt. */ + InteractiveState *isPtr) /* InteractiveState. */ { - Tcl_Obj *promptCmd; + Tcl_Obj *promptCmdPtr; int code; - Tcl_Channel outChannel, errChannel; + Tcl_Channel chan; - promptCmd = Tcl_GetVar2Ex(interp, - partial ? "tcl_prompt2" : "tcl_prompt1", NULL, TCL_GLOBAL_ONLY); - if (promptCmd == NULL) { + promptCmdPtr = Tcl_GetVar2Ex(interp, + isPtr->gotPartial ? "tcl_prompt2" : "tcl_prompt1", NULL, TCL_GLOBAL_ONLY); + if (promptCmdPtr == NULL) { defaultPrompt: - if (!partial) { - /* - * We must check that outChannel is a real channel - it is - * possible that someone has transferred stdout out of this - * interpreter with "interp transfer". - */ - - outChannel = Tcl_GetChannel(interp, "stdout", NULL); - if (outChannel != (Tcl_Channel) NULL) { - Tcl_WriteChars(outChannel, "% ", 2); + if (!isPtr->gotPartial) { + chan = Tcl_GetStdChannel(TCL_STDOUT); + if (chan != NULL) { + Tcl_WriteChars(chan, DEFAULT_PRIMARY_PROMPT, + strlen(DEFAULT_PRIMARY_PROMPT)); } } } else { - code = Tcl_EvalObjEx(interp, promptCmd, TCL_EVAL_GLOBAL); + code = Tcl_EvalObjEx(interp, promptCmdPtr, TCL_EVAL_GLOBAL); if (code != TCL_OK) { Tcl_AddErrorInfo(interp, "\n (script that generates prompt)"); - - /* - * We must check that errChannel is a real channel - it is - * possible that someone has transferred stderr out of this - * interpreter with "interp transfer". - */ - - errChannel = Tcl_GetChannel(interp, "stderr", NULL); - if (errChannel != (Tcl_Channel) NULL) { - Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp)); - Tcl_WriteChars(errChannel, "\n", 1); + if (Tcl_GetStringResult(interp)[0] != '\0') { + chan = Tcl_GetStdChannel(TCL_STDERR); + if (chan != NULL) { + Tcl_WriteObj(chan, Tcl_GetObjResult(interp)); + Tcl_WriteChars(chan, "\n", 1); + } } goto defaultPrompt; } } - outChannel = Tcl_GetChannel(interp, "stdout", NULL); - if (outChannel != (Tcl_Channel) NULL) { - Tcl_Flush(outChannel); + + chan = Tcl_GetStdChannel(TCL_STDOUT); + if (chan != NULL) { + Tcl_Flush(chan); } } |