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-rw-r--r--generic/tkArgv.c847
1 files changed, 421 insertions, 426 deletions
diff --git a/generic/tkArgv.c b/generic/tkArgv.c
index c1eb479..d0bfd77 100644
--- a/generic/tkArgv.c
+++ b/generic/tkArgv.c
@@ -1,426 +1,421 @@
-/*
- * tkArgv.c --
- *
- * This file contains a function that handles table-based argv-argc
- * parsing.
- *
- * Copyright (c) 1990-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkArgv.c,v 1.5 2005/11/04 11:52:50 dkf Exp $
- */
-
-#include "tkPort.h"
-#include "tk.h"
-
-/*
- * Default table of argument descriptors. These are normally available in
- * every application.
- */
-
-static Tk_ArgvInfo defaultTable[] = {
- {"-help", TK_ARGV_HELP, NULL, NULL,
- "Print summary of command-line options and abort"},
- {NULL, TK_ARGV_END, NULL, NULL, NULL}
-};
-
-/*
- * Forward declarations for functions defined in this file:
- */
-
-static void PrintUsage(Tcl_Interp *interp, Tk_ArgvInfo *argTable,
- int flags);
-
-/*
- *----------------------------------------------------------------------
- *
- * Tk_ParseArgv --
- *
- * Process an argv array according to a table of expected command-line
- * options. See the manual page for more details.
- *
- * Results:
- * The return value is a standard Tcl return value. If an error occurs
- * then an error message is left in the interp's result. Under normal
- * conditions, both *argcPtr and *argv are modified to return the
- * arguments that couldn't be processed here (they didn't match the
- * option table, or followed an TK_ARGV_REST argument).
- *
- * Side effects:
- * Variables may be modified, resources may be entered for tkwin, or
- * functions may be called. It all depends on the arguments and their
- * entries in argTable. See the user documentation for details.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tk_ParseArgv(
- Tcl_Interp *interp, /* Place to store error message. */
- Tk_Window tkwin, /* Window to use for setting Tk options. NULL
- * means ignore Tk option specs. */
- int *argcPtr, /* Number of arguments in argv. Modified to
- * hold # args left in argv at end. */
- CONST char **argv, /* Array of arguments. Modified to hold those
- * that couldn't be processed here. */
- Tk_ArgvInfo *argTable, /* Array of option descriptions */
- int flags) /* Or'ed combination of various flag bits,
- * such as TK_ARGV_NO_DEFAULTS. */
-{
- register Tk_ArgvInfo *infoPtr;
- /* Pointer to the current entry in the table
- * of argument descriptions. */
- Tk_ArgvInfo *matchPtr; /* Descriptor that matches current argument. */
- CONST char *curArg; /* Current argument */
- register char c; /* Second character of current arg (used for
- * quick check for matching; use 2nd char.
- * because first char. will almost always be
- * '-'). */
- int srcIndex; /* Location from which to read next argument
- * from argv. */
- int dstIndex; /* Index into argv to which next unused
- * argument should be copied (never greater
- * than srcIndex). */
- int argc; /* # arguments in argv still to process. */
- size_t length; /* Number of characters in current argument. */
- int i;
-
- if (flags & TK_ARGV_DONT_SKIP_FIRST_ARG) {
- srcIndex = dstIndex = 0;
- argc = *argcPtr;
- } else {
- srcIndex = dstIndex = 1;
- argc = *argcPtr-1;
- }
-
- while (argc > 0) {
- curArg = argv[srcIndex];
- srcIndex++;
- argc--;
- length = strlen(curArg);
- if (length > 0) {
- c = curArg[1];
- } else {
- c = 0;
- }
-
- /*
- * Loop throught the argument descriptors searching for one with the
- * matching key string. If found, leave a pointer to it in matchPtr.
- */
-
- matchPtr = NULL;
- for (i = 0; i < 2; i++) {
- if (i == 0) {
- infoPtr = argTable;
- } else {
- infoPtr = defaultTable;
- }
- for (; (infoPtr != NULL) && (infoPtr->type != TK_ARGV_END);
- infoPtr++) {
- if (infoPtr->key == NULL) {
- continue;
- }
- if ((infoPtr->key[1] != c)
- || (strncmp(infoPtr->key, curArg, length) != 0)) {
- continue;
- }
- if ((tkwin == NULL)
- && ((infoPtr->type == TK_ARGV_CONST_OPTION)
- || (infoPtr->type == TK_ARGV_OPTION_VALUE)
- || (infoPtr->type == TK_ARGV_OPTION_NAME_VALUE))) {
- continue;
- }
- if (infoPtr->key[length] == 0) {
- matchPtr = infoPtr;
- goto gotMatch;
- }
- if (flags & TK_ARGV_NO_ABBREV) {
- continue;
- }
- if (matchPtr != NULL) {
- Tcl_AppendResult(interp, "ambiguous option \"", curArg,
- "\"", NULL);
- return TCL_ERROR;
- }
- matchPtr = infoPtr;
- }
- }
- if (matchPtr == NULL) {
-
- /*
- * Unrecognized argument. Just copy it down, unless the caller
- * prefers an error to be registered.
- */
-
- if (flags & TK_ARGV_NO_LEFTOVERS) {
- Tcl_AppendResult(interp, "unrecognized argument \"",
- curArg, "\"", NULL);
- return TCL_ERROR;
- }
- argv[dstIndex] = curArg;
- dstIndex++;
- continue;
- }
-
- /*
- * Take the appropriate action based on the option type
- */
-
- gotMatch:
- infoPtr = matchPtr;
- switch (infoPtr->type) {
- case TK_ARGV_CONSTANT:
- *((int *) infoPtr->dst) = (int) infoPtr->src;
- break;
- case TK_ARGV_INT:
- if (argc == 0) {
- goto missingArg;
- } else {
- char *endPtr;
-
- *((int *) infoPtr->dst) = strtol(argv[srcIndex], &endPtr, 0);
- if ((endPtr == argv[srcIndex]) || (*endPtr != 0)) {
- Tcl_AppendResult(interp,"expected integer argument for \"",
- infoPtr->key, "\" but got \"", argv[srcIndex],"\"",
- NULL);
- return TCL_ERROR;
- }
- srcIndex++;
- argc--;
- }
- break;
- case TK_ARGV_STRING:
- if (argc == 0) {
- goto missingArg;
- } else {
- *((CONST char **)infoPtr->dst) = argv[srcIndex];
- srcIndex++;
- argc--;
- }
- break;
- case TK_ARGV_UID:
- if (argc == 0) {
- goto missingArg;
- } else {
- *((Tk_Uid *)infoPtr->dst) = Tk_GetUid(argv[srcIndex]);
- srcIndex++;
- argc--;
- }
- break;
- case TK_ARGV_REST:
- *((int *) infoPtr->dst) = dstIndex;
- goto argsDone;
- case TK_ARGV_FLOAT:
- if (argc == 0) {
- goto missingArg;
- } else {
- char *endPtr;
-
- *((double *) infoPtr->dst) = strtod(argv[srcIndex], &endPtr);
- if ((endPtr == argv[srcIndex]) || (*endPtr != 0)) {
- Tcl_AppendResult(interp, "expected floating-point ",
- "argument for \"", infoPtr->key, "\" but got \"",
- argv[srcIndex], "\"", NULL);
- return TCL_ERROR;
- }
- srcIndex++;
- argc--;
- }
- break;
- case TK_ARGV_FUNC: {
- typedef int (ArgvFunc)(char *, char *, CONST char *);
- ArgvFunc *handlerProc;
-
- handlerProc = (ArgvFunc *) infoPtr->src;
- if ((*handlerProc)(infoPtr->dst, infoPtr->key, argv[srcIndex])) {
- srcIndex += 1;
- argc -= 1;
- }
- break;
- }
- case TK_ARGV_GENFUNC: {
- typedef int (ArgvGenFunc)(char *, Tcl_Interp *, char *, int,
- CONST char **);
- ArgvGenFunc *handlerProc;
-
- handlerProc = (ArgvGenFunc *) infoPtr->src;
- argc = (*handlerProc)(infoPtr->dst, interp, infoPtr->key,
- argc, argv+srcIndex);
- if (argc < 0) {
- return TCL_ERROR;
- }
- break;
- }
- case TK_ARGV_HELP:
- PrintUsage(interp, argTable, flags);
- return TCL_ERROR;
- case TK_ARGV_CONST_OPTION:
- Tk_AddOption(tkwin, infoPtr->dst, infoPtr->src,
- TK_INTERACTIVE_PRIO);
- break;
- case TK_ARGV_OPTION_VALUE:
- if (argc < 1) {
- goto missingArg;
- }
- Tk_AddOption(tkwin, infoPtr->dst, argv[srcIndex],
- TK_INTERACTIVE_PRIO);
- srcIndex++;
- argc--;
- break;
- case TK_ARGV_OPTION_NAME_VALUE:
- if (argc < 2) {
- Tcl_AppendResult(interp, "\"", curArg,
- "\" option requires two following arguments", NULL);
- return TCL_ERROR;
- }
- Tk_AddOption(tkwin, argv[srcIndex], argv[srcIndex+1],
- TK_INTERACTIVE_PRIO);
- srcIndex += 2;
- argc -= 2;
- break;
- default: {
- char buf[64 + TCL_INTEGER_SPACE];
-
- sprintf(buf, "bad argument type %d in Tk_ArgvInfo", infoPtr->type);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_ERROR;
- }
- }
- }
-
- /*
- * If we broke out of the loop because of an OPT_REST argument, copy the
- * remaining arguments down.
- */
-
- argsDone:
- while (argc) {
- argv[dstIndex] = argv[srcIndex];
- srcIndex++;
- dstIndex++;
- argc--;
- }
- argv[dstIndex] = NULL;
- *argcPtr = dstIndex;
- return TCL_OK;
-
- missingArg:
- Tcl_AppendResult(interp, "\"", curArg,
- "\" option requires an additional argument", NULL);
- return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * PrintUsage --
- *
- * Generate a help string describing command-line options.
- *
- * Results:
- * The interp's result will be modified to hold a help string describing
- * all the options in argTable, plus all those in the default table
- * unless TK_ARGV_NO_DEFAULTS is specified in flags.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-PrintUsage(
- Tcl_Interp *interp, /* Place information in this interp's result
- * area. */
- Tk_ArgvInfo *argTable, /* Array of command-specific argument
- * descriptions. */
- int flags) /* If the TK_ARGV_NO_DEFAULTS bit is set in
- * this word, then don't generate information
- * for default options. */
-{
- register Tk_ArgvInfo *infoPtr;
- int width, i, numSpaces;
-#define NUM_SPACES 20
- static char spaces[] = " ";
- char tmp[TCL_DOUBLE_SPACE];
-
- /*
- * First, compute the width of the widest option key, so that we can make
- * everything line up.
- */
-
- width = 4;
- for (i = 0; i < 2; i++) {
- for (infoPtr = i ? defaultTable : argTable;
- infoPtr->type != TK_ARGV_END; infoPtr++) {
- int length;
- if (infoPtr->key == NULL) {
- continue;
- }
- length = strlen(infoPtr->key);
- if (length > width) {
- width = length;
- }
- }
- }
-
- Tcl_AppendResult(interp, "Command-specific options:", NULL);
- for (i = 0; ; i++) {
- for (infoPtr = i ? defaultTable : argTable;
- infoPtr->type != TK_ARGV_END; infoPtr++) {
- if ((infoPtr->type == TK_ARGV_HELP) && (infoPtr->key == NULL)) {
- Tcl_AppendResult(interp, "\n", infoPtr->help, NULL);
- continue;
- }
- Tcl_AppendResult(interp, "\n ", infoPtr->key, ":", NULL);
- numSpaces = width + 1 - strlen(infoPtr->key);
- while (numSpaces > 0) {
- if (numSpaces >= NUM_SPACES) {
- Tcl_AppendResult(interp, spaces, NULL);
- } else {
- Tcl_AppendResult(interp, spaces+NUM_SPACES-numSpaces,NULL);
- }
- numSpaces -= NUM_SPACES;
- }
- Tcl_AppendResult(interp, infoPtr->help, NULL);
- switch (infoPtr->type) {
- case TK_ARGV_INT:
- sprintf(tmp, "%d", *((int *) infoPtr->dst));
- Tcl_AppendResult(interp, "\n\t\tDefault value: ", tmp, NULL);
- break;
- case TK_ARGV_FLOAT:
- sprintf(tmp, "%g", *((double *) infoPtr->dst));
- Tcl_AppendResult(interp, "\n\t\tDefault value: ", tmp, NULL);
- break;
- case TK_ARGV_STRING: {
- char *string = *((char **) infoPtr->dst);
-
- if (string != NULL) {
- Tcl_AppendResult(interp, "\n\t\tDefault value: \"", string,
- "\"", NULL);
- }
- break;
- }
- default:
- break;
- }
- }
-
- if ((flags & TK_ARGV_NO_DEFAULTS) || (i > 0)) {
- break;
- }
- Tcl_AppendResult(interp, "\nGeneric options for all commands:", NULL);
- }
-}
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * End:
- */
+/*
+ * tkArgv.c --
+ *
+ * This file contains a function that handles table-based argv-argc
+ * parsing.
+ *
+ * Copyright (c) 1990-1994 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * RCS: @(#) $Id: tkArgv.c,v 1.6 2007/06/24 16:07:34 dkf Exp $
+ */
+
+#include "tkPort.h"
+#include "tk.h"
+
+/*
+ * Default table of argument descriptors. These are normally available in
+ * every application.
+ */
+
+static Tk_ArgvInfo defaultTable[] = {
+ {"-help", TK_ARGV_HELP, NULL, NULL,
+ "Print summary of command-line options and abort"},
+ {NULL, TK_ARGV_END, NULL, NULL, NULL}
+};
+
+/*
+ * Forward declarations for functions defined in this file:
+ */
+
+static void PrintUsage(Tcl_Interp *interp, Tk_ArgvInfo *argTable,
+ int flags);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_ParseArgv --
+ *
+ * Process an argv array according to a table of expected command-line
+ * options. See the manual page for more details.
+ *
+ * Results:
+ * The return value is a standard Tcl return value. If an error occurs
+ * then an error message is left in the interp's result. Under normal
+ * conditions, both *argcPtr and *argv are modified to return the
+ * arguments that couldn't be processed here (they didn't match the
+ * option table, or followed an TK_ARGV_REST argument).
+ *
+ * Side effects:
+ * Variables may be modified, resources may be entered for tkwin, or
+ * functions may be called. It all depends on the arguments and their
+ * entries in argTable. See the user documentation for details.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tk_ParseArgv(
+ Tcl_Interp *interp, /* Place to store error message. */
+ Tk_Window tkwin, /* Window to use for setting Tk options. NULL
+ * means ignore Tk option specs. */
+ int *argcPtr, /* Number of arguments in argv. Modified to
+ * hold # args left in argv at end. */
+ CONST char **argv, /* Array of arguments. Modified to hold those
+ * that couldn't be processed here. */
+ Tk_ArgvInfo *argTable, /* Array of option descriptions */
+ int flags) /* Or'ed combination of various flag bits,
+ * such as TK_ARGV_NO_DEFAULTS. */
+{
+ register Tk_ArgvInfo *infoPtr;
+ /* Pointer to the current entry in the table
+ * of argument descriptions. */
+ Tk_ArgvInfo *matchPtr; /* Descriptor that matches current argument. */
+ CONST char *curArg; /* Current argument */
+ register char c; /* Second character of current arg (used for
+ * quick check for matching; use 2nd char.
+ * because first char. will almost always be
+ * '-'). */
+ int srcIndex; /* Location from which to read next argument
+ * from argv. */
+ int dstIndex; /* Index into argv to which next unused
+ * argument should be copied (never greater
+ * than srcIndex). */
+ int argc; /* # arguments in argv still to process. */
+ size_t length; /* Number of characters in current argument. */
+ int i;
+
+ if (flags & TK_ARGV_DONT_SKIP_FIRST_ARG) {
+ srcIndex = dstIndex = 0;
+ argc = *argcPtr;
+ } else {
+ srcIndex = dstIndex = 1;
+ argc = *argcPtr-1;
+ }
+
+ while (argc > 0) {
+ curArg = argv[srcIndex];
+ srcIndex++;
+ argc--;
+ length = strlen(curArg);
+ if (length > 0) {
+ c = curArg[1];
+ } else {
+ c = 0;
+ }
+
+ /*
+ * Loop throught the argument descriptors searching for one with the
+ * matching key string. If found, leave a pointer to it in matchPtr.
+ */
+
+ matchPtr = NULL;
+ for (i = 0; i < 2; i++) {
+ if (i == 0) {
+ infoPtr = argTable;
+ } else {
+ infoPtr = defaultTable;
+ }
+ for (; (infoPtr != NULL) && (infoPtr->type != TK_ARGV_END);
+ infoPtr++) {
+ if (infoPtr->key == NULL) {
+ continue;
+ }
+ if ((infoPtr->key[1] != c)
+ || (strncmp(infoPtr->key, curArg, length) != 0)) {
+ continue;
+ }
+ if ((tkwin == NULL)
+ && ((infoPtr->type == TK_ARGV_CONST_OPTION)
+ || (infoPtr->type == TK_ARGV_OPTION_VALUE)
+ || (infoPtr->type == TK_ARGV_OPTION_NAME_VALUE))) {
+ continue;
+ }
+ if (infoPtr->key[length] == 0) {
+ matchPtr = infoPtr;
+ goto gotMatch;
+ }
+ if (flags & TK_ARGV_NO_ABBREV) {
+ continue;
+ }
+ if (matchPtr != NULL) {
+ Tcl_AppendResult(interp, "ambiguous option \"", curArg,
+ "\"", NULL);
+ return TCL_ERROR;
+ }
+ matchPtr = infoPtr;
+ }
+ }
+ if (matchPtr == NULL) {
+ /*
+ * Unrecognized argument. Just copy it down, unless the caller
+ * prefers an error to be registered.
+ */
+
+ if (flags & TK_ARGV_NO_LEFTOVERS) {
+ Tcl_AppendResult(interp, "unrecognized argument \"",
+ curArg, "\"", NULL);
+ return TCL_ERROR;
+ }
+ argv[dstIndex] = curArg;
+ dstIndex++;
+ continue;
+ }
+
+ /*
+ * Take the appropriate action based on the option type
+ */
+
+ gotMatch:
+ infoPtr = matchPtr;
+ switch (infoPtr->type) {
+ case TK_ARGV_CONSTANT:
+ *((int *) infoPtr->dst) = (int) infoPtr->src;
+ break;
+ case TK_ARGV_INT:
+ if (argc == 0) {
+ goto missingArg;
+ } else {
+ char *endPtr;
+
+ *((int *) infoPtr->dst) = strtol(argv[srcIndex], &endPtr, 0);
+ if ((endPtr == argv[srcIndex]) || (*endPtr != 0)) {
+ Tcl_AppendResult(interp,"expected integer argument for \"",
+ infoPtr->key, "\" but got \"", argv[srcIndex],
+ "\"", NULL);
+ return TCL_ERROR;
+ }
+ srcIndex++;
+ argc--;
+ }
+ break;
+ case TK_ARGV_STRING:
+ if (argc == 0) {
+ goto missingArg;
+ }
+ *((CONST char **)infoPtr->dst) = argv[srcIndex];
+ srcIndex++;
+ argc--;
+ break;
+ case TK_ARGV_UID:
+ if (argc == 0) {
+ goto missingArg;
+ }
+ *((Tk_Uid *)infoPtr->dst) = Tk_GetUid(argv[srcIndex]);
+ srcIndex++;
+ argc--;
+ break;
+ case TK_ARGV_REST:
+ *((int *) infoPtr->dst) = dstIndex;
+ goto argsDone;
+ case TK_ARGV_FLOAT:
+ if (argc == 0) {
+ goto missingArg;
+ } else {
+ char *endPtr;
+
+ *((double *) infoPtr->dst) = strtod(argv[srcIndex], &endPtr);
+ if ((endPtr == argv[srcIndex]) || (*endPtr != 0)) {
+ Tcl_AppendResult(interp, "expected floating-point ",
+ "argument for \"", infoPtr->key, "\" but got \"",
+ argv[srcIndex], "\"", NULL);
+ return TCL_ERROR;
+ }
+ srcIndex++;
+ argc--;
+ }
+ break;
+ case TK_ARGV_FUNC: {
+ typedef int (ArgvFunc)(char *, char *, CONST char *);
+ ArgvFunc *handlerProc = (ArgvFunc *) infoPtr->src;
+
+ if ((*handlerProc)(infoPtr->dst, infoPtr->key, argv[srcIndex])) {
+ srcIndex++;
+ argc--;
+ }
+ break;
+ }
+ case TK_ARGV_GENFUNC: {
+ typedef int (ArgvGenFunc)(char *, Tcl_Interp *, char *, int,
+ CONST char **);
+ ArgvGenFunc *handlerProc = (ArgvGenFunc *) infoPtr->src;
+
+ argc = (*handlerProc)(infoPtr->dst, interp, infoPtr->key,
+ argc, argv+srcIndex);
+ if (argc < 0) {
+ return TCL_ERROR;
+ }
+ break;
+ }
+ case TK_ARGV_HELP:
+ PrintUsage(interp, argTable, flags);
+ return TCL_ERROR;
+ case TK_ARGV_CONST_OPTION:
+ Tk_AddOption(tkwin, infoPtr->dst, infoPtr->src,
+ TK_INTERACTIVE_PRIO);
+ break;
+ case TK_ARGV_OPTION_VALUE:
+ if (argc < 1) {
+ goto missingArg;
+ }
+ Tk_AddOption(tkwin, infoPtr->dst, argv[srcIndex],
+ TK_INTERACTIVE_PRIO);
+ srcIndex++;
+ argc--;
+ break;
+ case TK_ARGV_OPTION_NAME_VALUE:
+ if (argc < 2) {
+ Tcl_AppendResult(interp, "\"", curArg,
+ "\" option requires two following arguments", NULL);
+ return TCL_ERROR;
+ }
+ Tk_AddOption(tkwin, argv[srcIndex], argv[srcIndex+1],
+ TK_INTERACTIVE_PRIO);
+ srcIndex += 2;
+ argc -= 2;
+ break;
+ default: {
+ char buf[64 + TCL_INTEGER_SPACE];
+
+ sprintf(buf, "bad argument type %d in Tk_ArgvInfo", infoPtr->type);
+ Tcl_SetResult(interp, buf, TCL_VOLATILE);
+ return TCL_ERROR;
+ }
+ }
+ }
+
+ /*
+ * If we broke out of the loop because of an OPT_REST argument, copy the
+ * remaining arguments down.
+ */
+
+ argsDone:
+ while (argc) {
+ argv[dstIndex] = argv[srcIndex];
+ srcIndex++;
+ dstIndex++;
+ argc--;
+ }
+ argv[dstIndex] = NULL;
+ *argcPtr = dstIndex;
+ return TCL_OK;
+
+ missingArg:
+ Tcl_AppendResult(interp, "\"", curArg,
+ "\" option requires an additional argument", NULL);
+ return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PrintUsage --
+ *
+ * Generate a help string describing command-line options.
+ *
+ * Results:
+ * The interp's result will be modified to hold a help string describing
+ * all the options in argTable, plus all those in the default table
+ * unless TK_ARGV_NO_DEFAULTS is specified in flags.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+PrintUsage(
+ Tcl_Interp *interp, /* Place information in this interp's result
+ * area. */
+ Tk_ArgvInfo *argTable, /* Array of command-specific argument
+ * descriptions. */
+ int flags) /* If the TK_ARGV_NO_DEFAULTS bit is set in
+ * this word, then don't generate information
+ * for default options. */
+{
+ register Tk_ArgvInfo *infoPtr;
+ int width, i, numSpaces;
+#define NUM_SPACES 20
+ static char spaces[] = " ";
+ char tmp[TCL_DOUBLE_SPACE];
+
+ /*
+ * First, compute the width of the widest option key, so that we can make
+ * everything line up.
+ */
+
+ width = 4;
+ for (i = 0; i < 2; i++) {
+ for (infoPtr = i ? defaultTable : argTable;
+ infoPtr->type != TK_ARGV_END; infoPtr++) {
+ int length;
+ if (infoPtr->key == NULL) {
+ continue;
+ }
+ length = strlen(infoPtr->key);
+ if (length > width) {
+ width = length;
+ }
+ }
+ }
+
+ Tcl_AppendResult(interp, "Command-specific options:", NULL);
+ for (i = 0; ; i++) {
+ for (infoPtr = i ? defaultTable : argTable;
+ infoPtr->type != TK_ARGV_END; infoPtr++) {
+ if ((infoPtr->type == TK_ARGV_HELP) && (infoPtr->key == NULL)) {
+ Tcl_AppendResult(interp, "\n", infoPtr->help, NULL);
+ continue;
+ }
+ Tcl_AppendResult(interp, "\n ", infoPtr->key, ":", NULL);
+ numSpaces = width + 1 - strlen(infoPtr->key);
+ while (numSpaces > 0) {
+ if (numSpaces >= NUM_SPACES) {
+ Tcl_AppendResult(interp, spaces, NULL);
+ } else {
+ Tcl_AppendResult(interp, spaces+NUM_SPACES-numSpaces,NULL);
+ }
+ numSpaces -= NUM_SPACES;
+ }
+ Tcl_AppendResult(interp, infoPtr->help, NULL);
+ switch (infoPtr->type) {
+ case TK_ARGV_INT:
+ sprintf(tmp, "%d", *((int *) infoPtr->dst));
+ Tcl_AppendResult(interp, "\n\t\tDefault value: ", tmp, NULL);
+ break;
+ case TK_ARGV_FLOAT:
+ sprintf(tmp, "%g", *((double *) infoPtr->dst));
+ Tcl_AppendResult(interp, "\n\t\tDefault value: ", tmp, NULL);
+ break;
+ case TK_ARGV_STRING: {
+ char *string = *((char **) infoPtr->dst);
+
+ if (string != NULL) {
+ Tcl_AppendResult(interp, "\n\t\tDefault value: \"", string,
+ "\"", NULL);
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ }
+
+ if ((flags & TK_ARGV_NO_DEFAULTS) || (i > 0)) {
+ break;
+ }
+ Tcl_AppendResult(interp, "\nGeneric options for all commands:", NULL);
+ }
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
generated by cgit v0.12 at 2024-11-01 16:54:33 (GMT)