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-rw-r--r--generic/tkMain.c208
1 files changed, 92 insertions, 116 deletions
diff --git a/generic/tkMain.c b/generic/tkMain.c
index 740e07b..8a398f5 100644
--- a/generic/tkMain.c
+++ b/generic/tkMain.c
@@ -13,7 +13,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkMain.c,v 1.39 2010/12/13 15:25:36 nijtmans Exp $
+ * RCS: @(#) $Id: tkMain.c,v 1.40 2010/12/15 08:56:03 nijtmans Exp $
*/
/**
@@ -69,21 +69,23 @@
#endif
/*
- * Further on, in UNICODE mode, we need to use functions like
- * Tcl_GetUnicodeFromObj, while otherwise Tcl_GetStringFromObj
- * is needed. Those macro's assure that the right functions
- * are used depending on the mode.
+ * 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).
*/
-#ifndef UNICODE
-# undef Tcl_GetUnicodeFromObj
-# define Tcl_GetUnicodeFromObj Tcl_GetStringFromObj
-# undef Tcl_NewUnicodeObj
-# define Tcl_NewUnicodeObj Tcl_NewStringObj
-# undef Tcl_WinTCharToUtf
-# define Tcl_WinTCharToUtf(a,b,c) Tcl_ExternalToUtfDString(NULL,a,b,c)
+#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 tkInt.h or tkPort.h here, because people might copy this file out
@@ -96,23 +98,26 @@
extern int isatty(int fd);
#endif
-typedef struct ThreadSpecificData {
- Tcl_Interp *interp; /* Interpreter for this thread. */
+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 tty; /* Non-zero means standard input is a
- * terminal-like device. Zero means it's a
- * file. */
-} ThreadSpecificData;
-static Tcl_ThreadDataKey dataKey;
+ 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);
/*
@@ -144,15 +149,14 @@ Tk_MainEx(
* but before starting to execute commands. */
Tcl_Interp *interp)
{
- Tcl_Obj *path, *argvPtr;
+ Tcl_Obj *path, *argvPtr, *appName;
const char *encodingName;
- int code, length, nullStdin = 0;
- Tcl_Channel inChannel, chan;
- ThreadSpecificData *tsdPtr;
+ int code, nullStdin = 0;
+ Tcl_Channel chan;
+ InteractiveState is;
#ifdef __WIN32__
HANDLE handle;
#endif
- Tcl_DString appName;
/*
* Ensure that we are getting a compatible version of Tcl. This is really
@@ -165,9 +169,8 @@ Tk_MainEx(
Tcl_InitMemory(interp);
- tsdPtr = Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
-
- tsdPtr->interp = interp;
+ is.interp = interp;
+ is.gotPartial = 0;
Tcl_Preserve(interp);
#if defined(__WIN32__)
@@ -191,28 +194,28 @@ 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 == _tcscmp(TEXT("-encoding"), argv[1]))
&& (TEXT('-') != argv[3][0])) {
- Tcl_Obj *value = Tcl_NewUnicodeObj(argv[2], -1);
- Tcl_SetStartupScript(Tcl_NewUnicodeObj(argv[3], -1), Tcl_GetString(value));
+ 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) && (TEXT('-') != argv[1][0])) {
- Tcl_SetStartupScript(Tcl_NewUnicodeObj(argv[1], -1), NULL);
+ Tcl_SetStartupScript(NewNativeObj(argv[1], -1), NULL);
argc--;
argv++;
} else if ((argc > 2) && (length = _tcslen(argv[1]))
&& (length > 1) && (0 == _tcsncmp(TEXT("-file"), argv[1], length))
&& (TEXT('-') != argv[2][0])) {
- Tcl_SetStartupScript(Tcl_NewUnicodeObj(argv[2], -1), NULL);
+ Tcl_SetStartupScript(NewNativeObj(argv[2], -1), NULL);
argc -= 2;
argv += 2;
}
@@ -220,16 +223,11 @@ Tk_MainEx(
path = Tcl_GetStartupScript(&encodingName);
if (path == NULL) {
- Tcl_WinTCharToUtf(argv[0], -1, &appName);
+ appName = NewNativeObj(argv[0], -1);
} else {
- const TCHAR *pathName = Tcl_GetUnicodeFromObj(path, &length);
-
- Tcl_WinTCharToUtf(pathName, length * sizeof(TCHAR), &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++;
@@ -237,12 +235,7 @@ Tk_MainEx(
argvPtr = Tcl_NewListObj(0, NULL);
while (argc--) {
- Tcl_DString ds;
-
- Tcl_WinTCharToUtf(*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);
@@ -267,19 +260,19 @@ Tk_MainEx(
* console window.
*/
- tsdPtr->tty = 1;
+ is.tty = 1;
} else if (GetFileType(handle) == FILE_TYPE_CHAR) {
/*
* A character file handle is a tty by definition.
*/
- tsdPtr->tty = 1;
+ is.tty = 1;
} else {
- tsdPtr->tty = 0;
+ is.tty = 0;
}
#else
- tsdPtr->tty = isatty(0);
+ is.tty = isatty(0);
#endif
#if defined(MAC_OSX_TK)
/*
@@ -288,15 +281,14 @@ Tk_MainEx(
* 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.
@@ -328,7 +320,7 @@ Tk_MainEx(
Tcl_DeleteInterp(interp);
Tcl_Exit(1);
}
- tsdPtr->tty = 0;
+ is.tty = 0;
} else {
/*
@@ -341,13 +333,12 @@ Tk_MainEx(
* Establish a channel handler for stdin.
*/
- inChannel = Tcl_GetStdChannel(TCL_STDIN);
- if (inChannel) {
- Tcl_CreateChannelHandler(inChannel, TCL_READABLE, StdinProc,
- 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);
}
}
@@ -355,8 +346,8 @@ Tk_MainEx(
if (chan) {
Tcl_Flush(chan);
}
- Tcl_DStringInit(&tsdPtr->command);
- Tcl_DStringInit(&tsdPtr->line);
+ Tcl_DStringInit(&is.command);
+ Tcl_DStringInit(&is.line);
Tcl_ResetResult(interp);
/*
@@ -393,36 +384,34 @@ 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 = clientData;
- ThreadSpecificData *tsdPtr =
- 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, chan);
+ Tcl_DeleteChannelHandler(chan, StdinProc, isPtr);
}
return;
}
- 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;
@@ -431,17 +420,17 @@ StdinProc(
* things, this will trash the text of the command being evaluated.
*/
- Tcl_CreateChannelHandler(chan, 0, StdinProc, 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, 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);
@@ -450,12 +439,12 @@ 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);
}
@@ -480,26 +469,18 @@ 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 *promptCmdPtr;
int code;
Tcl_Channel chan;
promptCmdPtr = Tcl_GetVar2Ex(interp,
- partial ? "tcl_prompt2" : "tcl_prompt1", NULL, TCL_GLOBAL_ONLY);
+ isPtr->gotPartial ? "tcl_prompt2" : "tcl_prompt1", NULL, TCL_GLOBAL_ONLY);
if (promptCmdPtr == NULL) {
defaultPrompt:
- if (!partial) {
- /*
- * We must check that chan is a real channel - it is
- * possible that someone has transferred stdout out of this
- * interpreter with "interp transfer".
- */
-
- chan = Tcl_GetChannel(interp, "stdout", NULL);
+ if (!isPtr->gotPartial) {
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
if (chan != NULL) {
Tcl_WriteChars(chan, DEFAULT_PRIMARY_PROMPT,
strlen(DEFAULT_PRIMARY_PROMPT));
@@ -510,23 +491,18 @@ Prompt(
if (code != TCL_OK) {
Tcl_AddErrorInfo(interp,
"\n (script that generates prompt)");
-
- /*
- * We must check that chan is a real channel - it is
- * possible that someone has transferred stderr out of this
- * interpreter with "interp transfer".
- */
-
- chan = Tcl_GetChannel(interp, "stderr", NULL);
- if (chan != NULL) {
- Tcl_WriteObj(chan, Tcl_GetObjResult(interp));
- Tcl_WriteChars(chan, "\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;
}
}
- chan = Tcl_GetChannel(interp, "stdout", NULL);
+ chan = Tcl_GetStdChannel(TCL_STDOUT);
if (chan != NULL) {
Tcl_Flush(chan);
}
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