/* ARGSUSED */
int
Tcl_ScanObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
const char *format;
int numVars, nconversions, totalVars = -1;
int objIndex, offset, i, result, code;
long value;
const char *string, *end, *baseString;
char op = 0;
int width, underflow = 0;
Tcl_WideInt wideValue;
Tcl_UniChar ch, sch;
Tcl_Obj **objs = NULL, *objPtr = NULL;
int flags;
char buf[513]; /* Temporary buffer to hold scanned number
* strings before they are passed to
* strtoul. */
if (objc < 3) {
Tcl_WrongNumArgs(interp, 1, objv,
"string format ?varName ...?");
return TCL_ERROR;
}
format = Tcl_GetStringFromObj(objv[2], NULL);
numVars = objc-3;
/*
* Check for errors in the format string.
*/
if (ValidateFormat(interp, format, numVars, &totalVars) == TCL_ERROR) {
return TCL_ERROR;
}
/*
* Allocate space for the result objects.
*/
if (totalVars > 0) {
objs = ckalloc(sizeof(Tcl_Obj *) * totalVars);
for (i = 0; i < totalVars; i++) {
objs[i] = NULL;
}
}
string = Tcl_GetStringFromObj(objv[1], NULL);
baseString = string;
/*
* Iterate over the format string filling in the result objects until we
* reach the end of input, the end of the format string, or there is a
* mismatch.
*/
objIndex = 0;
nconversions = 0;
while (*format != '\0') {
int parseFlag = TCL_PARSE_NO_WHITESPACE;
format += Tcl_UtfToUniChar(format, &ch);
flags = 0;
/*
* If we see whitespace in the format, skip whitespace in the string.
*/
if (Tcl_UniCharIsSpace(ch)) {
offset = Tcl_UtfToUniChar(string, &sch);
while (Tcl_UniCharIsSpace(sch)) {
if (*string == '\0') {
goto done;
}
string += offset;
offset = Tcl_UtfToUniChar(string, &sch);
}
continue;
}
if (ch != '%') {
literal:
if (*string == '\0') {
underflow = 1;
goto done;
}
string += Tcl_UtfToUniChar(string, &sch);
if (ch != sch) {
goto done;
}
continue;
}
format += Tcl_UtfToUniChar(format, &ch);
if (ch == '%') {
goto literal;
}
/*
* Check for assignment suppression ('*') or an XPG3-style assignment
* ('%n$').
*/
if (ch == '*') {
flags |= SCAN_SUPPRESS;
format += Tcl_UtfToUniChar(format, &ch);
} else if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
char *formatEnd;
value = strtoul(format-1, &formatEnd, 10);/* INTL: "C" locale. */
if (*formatEnd == '$') {
format = formatEnd+1;
format += Tcl_UtfToUniChar(format, &ch);
objIndex = (int) value - 1;
}
}
/*
* Parse any width specifier.
*/
if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
width = (int) strtoul(format-1, (char **) &format, 10);/* INTL: "C" locale. */
format += Tcl_UtfToUniChar(format, &ch);
} else {
width = 0;
}
/*
* Handle any size specifier.
*/
switch (ch) {
case 'l':
if (*format == 'l') {
flags |= SCAN_BIG;
format += 1;
format += Tcl_UtfToUniChar(format, &ch);
break;
}
case 'L':
flags |= SCAN_LONGER;
/*
* Fall through so we skip to the next character.
*/
case 'h':
format += Tcl_UtfToUniChar(format, &ch);
}
/*
* Handle the various field types.
*/
switch (ch) {
case 'n':
if (!(flags & SCAN_SUPPRESS)) {
objPtr = Tcl_NewIntObj(string - baseString);
Tcl_IncrRefCount(objPtr);
CLANG_ASSERT(objs);
objs[objIndex++] = objPtr;
}
nconversions++;
continue;
case 'd':
op = 'i';
parseFlag |= TCL_PARSE_DECIMAL_ONLY;
break;
case 'i':
op = 'i';
parseFlag |= TCL_PARSE_SCAN_PREFIXES;
break;
case 'o':
op = 'i';
parseFlag |= TCL_PARSE_OCTAL_ONLY | TCL_PARSE_SCAN_PREFIXES;
break;
case 'x':
case 'X':
op = 'i';
parseFlag |= TCL_PARSE_HEXADECIMAL_ONLY;
break;
case 'b':
op = 'i';
parseFlag |= TCL_PARSE_BINARY_ONLY;
break;
case 'u':
op = 'i';
parseFlag |= TCL_PARSE_DECIMAL_ONLY;
flags |= SCAN_UNSIGNED;
break;
case 'f':
case 'e':
case 'E':
case 'g':
case 'G':
op = 'f';
break;
case 's':
op = 's';
break;
case 'c':
op = 'c';
flags |= SCAN_NOSKIP;
break;
case '[':
op = '[';
flags |= SCAN_NOSKIP;
break;
}
/*
* At this point, we will need additional characters from the string
* to proceed.
*/
if (*string == '\0') {
underflow = 1;
goto done;
}
/*
* Skip any leading whitespace at the beginning of a field unless the
* format suppresses this behavior.
*/
if (!(flags & SCAN_NOSKIP)) {
while (*string != '\0') {
offset = Tcl_UtfToUniChar(string, &sch);
if (!Tcl_UniCharIsSpace(sch)) {
break;
}
string += offset;
}
if (*string == '\0') {
underflow = 1;
goto done;
}
}
/*
* Perform the requested scanning operation.
*/
switch (op) {
case 's':
/*
* Scan a string up to width characters or whitespace.
*/
if (width == 0) {
width = ~0;
}
end = string;
while (*end != '\0') {
offset = Tcl_UtfToUniChar(end, &sch);
if (Tcl_UniCharIsSpace(sch)) {
break;
}
end += offset;
if (--width == 0) {
break;
}
}
if (!(flags & SCAN_SUPPRESS)) {
objPtr = Tcl_NewStringObj(string, end-string);
Tcl_IncrRefCount(objPtr);
CLANG_ASSERT(objs);
objs[objIndex++] = objPtr;
}
string = end;
break;
case '[': {
CharSet cset;
if (width == 0) {
width = ~0;
}
end = string;
format = BuildCharSet(&cset, format);
while (*end != '\0') {
offset = Tcl_UtfToUniChar(end, &sch);
if (!CharInSet(&cset, (int)sch)) {
break;
}
end += offset;
if (--width == 0) {
break;
}
}
ReleaseCharSet(&cset);
if (string == end) {
/*
* Nothing matched the range, stop processing.
*/
goto done;
}
if (!(flags & SCAN_SUPPRESS)) {
objPtr = Tcl_NewStringObj(string, end-string);
Tcl_IncrRefCount(objPtr);
objs[objIndex++] = objPtr;
}
string = end;
break;
}
case 'c':
/*
* Scan a single Unicode character.
*/
string += Tcl_UtfToUniChar(string, &sch);
if (!(flags & SCAN_SUPPRESS)) {
objPtr = Tcl_NewIntObj((int)sch);
Tcl_IncrRefCount(objPtr);
CLANG_ASSERT(objs);
objs[objIndex++] = objPtr;
}
break;
case 'i':
/*
* Scan an unsigned or signed integer.
*/
objPtr = Tcl_NewLongObj(0);
Tcl_IncrRefCount(objPtr);
if (width == 0) {
width = ~0;
}
if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
&end, TCL_PARSE_INTEGER_ONLY | parseFlag)) {
Tcl_DecrRefCount(objPtr);
if (width < 0) {
if (*end == '\0') {
underflow = 1;
}
} else {
if (end == string + width) {
underflow = 1;
}
}
goto done;
}
string = end;
if (flags & SCAN_SUPPRESS) {
Tcl_DecrRefCount(objPtr);
break;
}
if (flags & SCAN_LONGER) {
if (Tcl_GetWideIntFromObj(NULL, objPtr, &wideValue) != TCL_OK) {
wideValue = ~(Tcl_WideUInt)0 >> 1; /* WIDE_MAX */
if (TclGetString(objPtr)[0] == '-') {
wideValue++; /* WIDE_MAX + 1 = WIDE_MIN */
}
}
if ((flags & SCAN_UNSIGNED) && (wideValue < 0)) {
sprintf(buf, "%" TCL_LL_MODIFIER "u",
(Tcl_WideUInt)wideValue);
Tcl_SetStringObj(objPtr, buf, -1);
} else {
Tcl_SetWideIntObj(objPtr, wideValue);
}
} else if (!(flags & SCAN_BIG)) {
if (TclGetLongFromObj(NULL, objPtr, &value) != TCL_OK) {
if (TclGetString(objPtr)[0] == '-') {
value = LONG_MIN;
} else {
value = LONG_MAX;
}
}
if ((flags & SCAN_UNSIGNED) && (value < 0)) {
sprintf(buf, "%lu", value); /* INTL: ISO digit */
Tcl_SetStringObj(objPtr, buf, -1);
} else {
Tcl_SetLongObj(objPtr, value);
}
}
objs[objIndex++] = objPtr;
break;
case 'f':
/*
* Scan a floating point number
*/
objPtr = Tcl_NewDoubleObj(0.0);
Tcl_IncrRefCount(objPtr);
if (width == 0) {
width = ~0;
}
if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
&end, TCL_PARSE_DECIMAL_ONLY | TCL_PARSE_NO_WHITESPACE)) {
Tcl_DecrRefCount(objPtr);
if (width < 0) {
if (*end == '\0') {
underflow = 1;
}
} else {
if (end == string + width) {
underflow = 1;
}
}
goto done;
} else if (flags & SCAN_SUPPRESS) {
Tcl_DecrRefCount(objPtr);
string = end;
} else {
double dvalue;
if (Tcl_GetDoubleFromObj(NULL, objPtr, &dvalue) != TCL_OK) {
#ifdef ACCEPT_NAN
if (objPtr->typePtr == &tclDoubleType) {
dvalue = objPtr->internalRep.doubleValue;
} else
#endif
{
Tcl_DecrRefCount(objPtr);
goto done;
}
}
Tcl_SetDoubleObj(objPtr, dvalue);
CLANG_ASSERT(objs);
objs[objIndex++] = objPtr;
string = end;
}
}
static int
TestintobjCmd(
ClientData clientData, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
int intValue, varIndex, i;
long longValue;
const char *index, *subCmd, *string;
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;
}
subCmd = Tcl_GetString(objv[1]);
if (strcmp(subCmd, "set") == 0) {
if (objc != 4) {
goto wrongNumArgs;
}
string = Tcl_GetString(objv[3]);
if (Tcl_GetInt(interp, string, &i) != TCL_OK) {
return TCL_ERROR;
}
intValue = i;
/*
* 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".
*/
if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetIntObj(varPtr[varIndex], intValue);
} else {
SetVarToObj(varIndex, Tcl_NewIntObj(intValue));
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
} else if (strcmp(subCmd, "set2") == 0) { /* doesn't set result */
if (objc != 4) {
goto wrongNumArgs;
}
string = Tcl_GetString(objv[3]);
if (Tcl_GetInt(interp, string, &i) != TCL_OK) {
return TCL_ERROR;
}
intValue = i;
if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetIntObj(varPtr[varIndex], intValue);
} else {
SetVarToObj(varIndex, Tcl_NewIntObj(intValue));
}
} else if (strcmp(subCmd, "setlong") == 0) {
if (objc != 4) {
goto wrongNumArgs;
}
string = Tcl_GetString(objv[3]);
if (Tcl_GetInt(interp, string, &i) != TCL_OK) {
return TCL_ERROR;
}
intValue = i;
if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetLongObj(varPtr[varIndex], intValue);
} else {
SetVarToObj(varIndex, Tcl_NewLongObj(intValue));
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
} else if (strcmp(subCmd, "setmaxlong") == 0) {
long maxLong = LONG_MAX;
if (objc != 3) {
goto wrongNumArgs;
}
if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetLongObj(varPtr[varIndex], maxLong);
} else {
SetVarToObj(varIndex, Tcl_NewLongObj(maxLong));
}
} else if (strcmp(subCmd, "ismaxlong") == 0) {
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
if (Tcl_GetLongFromObj(interp, varPtr[varIndex], &longValue) != TCL_OK) {
return TCL_ERROR;
}
Tcl_AppendToObj(Tcl_GetObjResult(interp),
((longValue == LONG_MAX)? "1" : "0"), -1);
} else if (strcmp(subCmd, "get") == 0) {
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
} else if (strcmp(subCmd, "get2") == 0) {
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
string = Tcl_GetString(varPtr[varIndex]);
Tcl_AppendToObj(Tcl_GetObjResult(interp), string, -1);
} else if (strcmp(subCmd, "inttoobigtest") == 0) {
/*
* If long ints have more bits than ints on this platform, verify that
* Tcl_GetIntFromObj returns an error if the long int held in an
* integer object's internal representation is too large to fit in an
* int.
*/
if (objc != 3) {
goto wrongNumArgs;
}
#if (INT_MAX == LONG_MAX) /* int is same size as long int */
Tcl_AppendToObj(Tcl_GetObjResult(interp), "1", -1);
#else
if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetLongObj(varPtr[varIndex], LONG_MAX);
} else {
SetVarToObj(varIndex, Tcl_NewLongObj(LONG_MAX));
}
if (Tcl_GetIntFromObj(interp, varPtr[varIndex], &i) != TCL_OK) {
Tcl_ResetResult(interp);
Tcl_AppendToObj(Tcl_GetObjResult(interp), "1", -1);
return TCL_OK;
}
Tcl_AppendToObj(Tcl_GetObjResult(interp), "0", -1);
#endif
} else if (strcmp(subCmd, "mult10") == 0) {
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
if (Tcl_GetIntFromObj(interp, varPtr[varIndex],
&intValue) != TCL_OK) {
return TCL_ERROR;
}
if (!Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetIntObj(varPtr[varIndex], intValue * 10);
} else {
SetVarToObj(varIndex, Tcl_NewIntObj(intValue * 10));
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
} else if (strcmp(subCmd, "div10") == 0) {
if (objc != 3) {
goto wrongNumArgs;
}
if (CheckIfVarUnset(interp, varIndex)) {
return TCL_ERROR;
}
if (Tcl_GetIntFromObj(interp, varPtr[varIndex],
&intValue) != TCL_OK) {
return TCL_ERROR;
}
if (!Tcl_IsShared(varPtr[varIndex])) {
Tcl_SetIntObj(varPtr[varIndex], intValue / 10);
} else {
SetVarToObj(varIndex, Tcl_NewIntObj(intValue / 10));
}
Tcl_SetObjResult(interp, varPtr[varIndex]);
} else {
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
"bad option \"", Tcl_GetString(objv[1]),
"\": must be set, get, get2, mult10, or div10", NULL);
return TCL_ERROR;
}
return TCL_OK;
}