int
Tcl_RegExpExecObj(
Tcl_Interp *interp, /* Interpreter to use for error reporting. */
Tcl_RegExp re, /* Compiled regular expression; must have been
* returned by previous call to
* Tcl_GetRegExpFromObj. */
Tcl_Obj *textObj, /* Text against which to match re. */
int offset, /* Character index that marks where matching
* should begin. */
int nmatches, /* How many subexpression matches (counting
* the whole match as subexpression 0) are of
* interest. -1 means all of them. */
int flags) /* Regular expression execution flags. */
{
TclRegexp *regexpPtr = (TclRegexp *) re;
Tcl_UniChar *udata;
int length;
int reflags = regexpPtr->flags;
#define TCL_REG_GLOBOK_FLAGS \
(TCL_REG_ADVANCED | TCL_REG_NOSUB | TCL_REG_NOCASE)
/*
* Take advantage of the equivalent glob pattern, if one exists.
* This is possible based only on the right mix of incoming flags (0)
* and regexp compile flags.
*/
if ((offset == 0) && (nmatches == 0) && (flags == 0)
&& !(reflags & ~TCL_REG_GLOBOK_FLAGS)
&& (regexpPtr->globObjPtr != NULL)) {
int nocase = (reflags & TCL_REG_NOCASE) ? TCL_MATCH_NOCASE : 0;
/*
* Pass to TclStringMatchObj for obj-specific handling.
* XXX: Currently doesn't take advantage of exact-ness that
* XXX: TclReToGlob tells us about
*/
return TclStringMatchObj(textObj, regexpPtr->globObjPtr, nocase);
}
/*
* Save the target object so we can extract strings from it later.
*/
regexpPtr->string = NULL;
regexpPtr->objPtr = textObj;
udata = Tcl_GetUnicodeFromObj(textObj, &length);
if (offset > length) {
offset = length;
}
udata += offset;
length -= offset;
return RegExpExecUniChar(interp, re, udata, length, nmatches, flags);
}
static void
DrawMenuUnderline(
TkMenu *menuPtr, /* The menu to draw into */
TkMenuEntry *mePtr, /* The entry we are drawing */
Drawable d, /* What we are drawing into */
GC gc, /* The gc to draw into */
Tk_Font tkfont, /* The precalculated font */
const Tk_FontMetrics *fmPtr,/* The precalculated font metrics */
int x, int y,
int width, int height)
{
if ((mePtr->underline >= 0) && (mePtr->labelPtr != NULL)) {
int len;
/*
* Do the unicode call just to prevent overruns.
*/
Tcl_GetUnicodeFromObj(mePtr->labelPtr, &len);
if (mePtr->underline < len) {
int activeBorderWidth, leftEdge;
const char *label, *start, *end;
label = Tcl_GetString(mePtr->labelPtr);
start = Tcl_UtfAtIndex(label, mePtr->underline);
end = Tcl_UtfNext(start);
Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,
menuPtr->activeBorderWidthPtr, &activeBorderWidth);
leftEdge = x + mePtr->indicatorSpace + activeBorderWidth;
if (menuPtr->menuType == MENUBAR) {
leftEdge += 5;
}
Tk_UnderlineChars(menuPtr->display, d, gc, tkfont, label, leftEdge,
y + (height + fmPtr->ascent - fmPtr->descent) / 2,
start - label, end - label);
}
}
}
/* Process the list of variants by counting the frequency of each
* regexp in the main input string "s" and printing the results. */
static void
process_variants(int cpu_count,
Tcl_Obj* s)
{
int i = 0;
int s_length = 0;
int thread_rv = 0;
int thread_count = 0;
int task_count = 0;
pthread_t* threads = NULL;
variant_worker_task_t tasks = NULL;
struct variant_worker_data data = {PTHREAD_MUTEX_INITIALIZER,};
/* WARNING: Tcl_RegExpExecObj() always does an internal conversion
* of "s" to a UCS-2 Unicode string if "s" is in UTF-8 format.
* Normally, this is a nice feature, but as of tcl-8.5, it doesn't
* appear to be thread-safe. As a work-around, force the
* conversion now before starting the threads. */
Tcl_GetUnicodeFromObj(s, &s_length);
/* Determine the total number of variants (minus the NULL sentinel). */
task_count = (int)(sizeof(variants) / sizeof(variants[0]) - 1);
/* Determine the number of threads to start. */
thread_count = cpu_count * 2;
if (thread_count > task_count) {
thread_count = task_count;
}
/* Allocate the "threads" array which holds the thread IDs. */
threads = calloc(thread_count, sizeof(*threads));
if (!threads) {
perror("calloc");
exit(1);
}
/* Allocate the "tasks" array which holds one unit of work per
* element in the array. */
tasks = calloc(task_count, sizeof(*tasks));
if (!tasks) {
perror("calloc");
exit(1);
}
/* Initialize the task array. */
for (i = 0 ; i < task_count ; ++i) {
tasks[i].variant = variants[i];
tasks[i].s = s;
tasks[i].count = 0;
}
/* Initialize the data shared by the threads. */
data.tasks = tasks;
data.next_task = 0;
data.total_tasks = task_count;
/* Start the threads. */
for (i = 0 ; i < thread_count ; ++i) {
thread_rv = pthread_create(&threads[i],
NULL,
(thread_start_t)process_variant_worker,
&data);
if (thread_rv) {
fprintf(stderr, "*** Error: pthread_create: failed");
exit(1);
}
}
/* Wait for each thread to finish. */
for (i = 0 ; i < thread_count ; ++i) {
thread_rv = pthread_join(threads[i], NULL);
if (thread_rv) {
fprintf(stderr, "*** Error: pthread_join: failed");
exit(1);
}
}
/* Print results. */
for (i = 0 ; i < task_count ; ++i) {
printf("%s %lu\n", variants[i], tasks[i].count);
}
/* Clean up. */
free(tasks);
free(threads);
}
static int
TeststringobjCmd(
ClientData clientData, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_UniChar *unicode;
int varIndex, option, i, length;
#define MAX_STRINGS 11
const char *index, *string, *strings[MAX_STRINGS+1];
TestString *strPtr;
static const char *const options[] = {
"append", "appendstrings", "get", "get2", "length", "length2",
"set", "set2", "setlength", "maxchars", "getunicode",
"appendself", "appendself2", NULL
};
if (objc < 3) {
wrongNumArgs:
Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
return TCL_ERROR;
}
index = Tcl_GetString(objv[2]);
if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) {
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, &option)
!= TCL_OK) {
return TCL_ERROR;
}
switch (option) {
case 0: /* append */
if (objc != 5) {
goto wrongNumArgs;
}
if (Tcl_GetIntFromObj(interp, objv[4], &length) != TCL_OK) {
return TCL_ERROR;
}
if (varPtr[varIndex] == NULL) {
SetVarToObj(varIndex, Tcl_NewObj());
}
/*
* If the object bound to variable "varIndex" is shared, we must
* "copy on write" and append to a copy of the object.
*/
if (Tcl_IsShared(varPtr[varIndex])) {
SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
}
string = Tcl_GetString(objv[3]);
Tcl_AppendToObj(varPtr[varIndex], string, length);
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
case 1: /* appendstrings */
if (objc > (MAX_STRINGS+3)) {
goto wrongNumArgs;
}
if (varPtr[varIndex] == NULL) {
SetVarToObj(varIndex, Tcl_NewObj());
}
/*
* If the object bound to variable "varIndex" is shared, we must
* "copy on write" and append to a copy of the object.
*/
if (Tcl_IsShared(varPtr[varIndex])) {
SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
}
for (i = 3; i < objc; i++) {
strings[i-3] = Tcl_GetString(objv[i]);
}
for ( ; i < 12 + 3; i++) {
strings[i - 3] = NULL;
}
Tcl_AppendStringsToObj(varPtr[varIndex], strings[0], strings[1],
strings[2], strings[3], strings[4], strings[5],
strings[6], strings[7], strings[8], strings[9],
strings[10], strings[11]);
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
case 2: /* get */
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
case 3: /* get2 */
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
string = Tcl_GetString(varPtr[varIndex]);
Tcl_AppendToObj(Tcl_GetObjResult(interp), string, -1);
break;
case 4: /* length */
if (objc != 3) {
goto wrongNumArgs;
}
Tcl_SetIntObj(Tcl_GetObjResult(interp), (varPtr[varIndex] != NULL)
? varPtr[varIndex]->length : -1);
break;
case 5: /* length2 */
if (objc != 3) {
goto wrongNumArgs;
}
if (varPtr[varIndex] != NULL) {
Tcl_ConvertToType(NULL, varPtr[varIndex],
Tcl_GetObjType("string"));
strPtr = (TestString *)
(varPtr[varIndex])->internalRep.otherValuePtr;
length = (int) strPtr->allocated;
} else {
length = -1;
}
Tcl_SetIntObj(Tcl_GetObjResult(interp), length);
break;
case 6: /* set */
if (objc != 4) {
goto wrongNumArgs;
}
/*
* If the object currently bound to the variable with index
* varIndex has ref count 1 (i.e. the object is unshared) we can
* modify that object directly. Otherwise, if RC>1 (i.e. the
* object is shared), we must create a new object to modify/set
* and decrement the old formerly-shared object's ref count. This
* is "copy on write".
*/
string = Tcl_GetStringFromObj(objv[3], &length);
if ((varPtr[varIndex] != NULL)
&& !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetStringObj(varPtr[varIndex], string, length);
} else {
SetVarToObj(varIndex, Tcl_NewStringObj(string, length));
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
case 7: /* set2 */
if (objc != 4) {
goto wrongNumArgs;
}
SetVarToObj(varIndex, objv[3]);
break;
case 8: /* setlength */
if (objc != 4) {
goto wrongNumArgs;
}
if (Tcl_GetIntFromObj(interp, objv[3], &length) != TCL_OK) {
return TCL_ERROR;
}
if (varPtr[varIndex] != NULL) {
Tcl_SetObjLength(varPtr[varIndex], length);
}
break;
case 9: /* maxchars */
if (objc != 3) {
goto wrongNumArgs;
}
if (varPtr[varIndex] != NULL) {
Tcl_ConvertToType(NULL, varPtr[varIndex],
Tcl_GetObjType("string"));
strPtr = (TestString *)
(varPtr[varIndex])->internalRep.otherValuePtr;
length = strPtr->maxChars;
} else {
length = -1;
}
Tcl_SetIntObj(Tcl_GetObjResult(interp), length);
break;
case 10: /* getunicode */
if (objc != 3) {
goto wrongNumArgs;
}
Tcl_GetUnicodeFromObj(varPtr[varIndex], NULL);
break;
case 11: /* appendself */
if (objc != 4) {
goto wrongNumArgs;
}
if (varPtr[varIndex] == NULL) {
SetVarToObj(varIndex, Tcl_NewObj());
}
/*
* If the object bound to variable "varIndex" is shared, we must
* "copy on write" and append to a copy of the object.
*/
if (Tcl_IsShared(varPtr[varIndex])) {
SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
}
string = Tcl_GetStringFromObj(varPtr[varIndex], &length);
if (Tcl_GetIntFromObj(interp, objv[3], &i) != TCL_OK) {
return TCL_ERROR;
}
if ((i < 0) || (i > length)) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"index value out of range", -1));
return TCL_ERROR;
}
Tcl_AppendToObj(varPtr[varIndex], string + i, length - i);
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
case 12: /* appendself2 */
if (objc != 4) {
goto wrongNumArgs;
}
if (varPtr[varIndex] == NULL) {
SetVarToObj(varIndex, Tcl_NewObj());
}
/*
* If the object bound to variable "varIndex" is shared, we must
* "copy on write" and append to a copy of the object.
*/
if (Tcl_IsShared(varPtr[varIndex])) {
SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
}
unicode = Tcl_GetUnicodeFromObj(varPtr[varIndex], &length);
if (Tcl_GetIntFromObj(interp, objv[3], &i) != TCL_OK) {
return TCL_ERROR;
}
if ((i < 0) || (i > length)) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"index value out of range", -1));
return TCL_ERROR;
}
Tcl_AppendUnicodeToObj(varPtr[varIndex], unicode + i, length - i);
Tcl_SetObjResult(interp, varPtr[varIndex]);
break;
}
return TCL_OK;
}
