+/* Returns an array of the parsed argument type given in the format string. */
+static ufmt_args* parseArguments(const UChar *alias, va_list ap, UErrorCode *status) {
+ ufmt_args *arglist = NULL;
+ ufmt_type_info *typelist = NULL;
+ UBool *islonglong = NULL;
+ int32_t size = 0;
+ int32_t pos = 0;
+ UChar type;
+ uint16_t handlerNum;
+ const UChar *aliasStart = alias;
+
+ /* get maximum number of arguments */
+ for(;;) {
+ /* find % */
+ while(*alias != UP_PERCENT && *alias != 0x0000) {
+ alias++;
+ }
+
+ if(*alias == 0x0000) {
+ break;
+ }
+
+ alias++;
+
+ /* handle the pos number */
+ if(ISDIGIT(*alias)) {
+
+ /* handle positional parameters */
+ if(ISDIGIT(*alias)) {
+ pos = (int) (*alias++ - DIGIT_ZERO);
+
+ while(ISDIGIT(*alias)) {
+ pos *= 10;
+ pos += (int) (*alias++ - DIGIT_ZERO);
+ }
+ }
+
+ /* if there is no '$', don't read anything */
+ if(*alias != SPEC_DOLLARSIGN) {
+ return NULL;
+ }
+ } else {
+ return NULL;
+ }
+
+ if (pos > size) {
+ size = pos;
+ }
+ }
+
+ /* create the parsed argument list */
+ typelist = (ufmt_type_info*)uprv_malloc(sizeof(ufmt_type_info) * size);
+ islonglong = (UBool*)uprv_malloc(sizeof(UBool) * size);
+ arglist = (ufmt_args*)uprv_malloc(sizeof(ufmt_args) * size);
+
+ /* If malloc failed, return NULL */
+ if (!typelist || !islonglong || !arglist) {
+ if (typelist) {
+ uprv_free(typelist);
+ }
+
+ if (islonglong) {
+ uprv_free(islonglong);
+ }
+
+ if (arglist) {
+ uprv_free(arglist);
+ }
+
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+
+ /* reset alias back to the beginning */
+ alias = aliasStart;
+
+ for(;;) {
+ /* find % */
+ while(*alias != UP_PERCENT && *alias != 0x0000) {
+ alias++;
+ }
+
+ if(*alias == 0x0000) {
+ break;
+ }
+
+ alias++;
+
+ /* handle positional parameters */
+ if(ISDIGIT(*alias)) {
+ pos = (int) (*alias++ - DIGIT_ZERO);
+
+ while(ISDIGIT(*alias)) {
+ pos *= 10;
+ pos += (int) (*alias++ - DIGIT_ZERO);
+ }
+ }
+ /* offset position by 1 */
+ pos--;
+
+ /* skip over everything except for the type */
+ while (ISMOD(*alias) || ISFLAG(*alias) || ISDIGIT(*alias) ||
+ *alias == SPEC_ASTERISK || *alias == SPEC_PERIOD || *alias == SPEC_DOLLARSIGN) {
+ islonglong[pos] = FALSE;
+ if (ISMOD(*alias)) {
+ alias++;
+ if (*alias == MOD_LOWERL) {
+ islonglong[pos] = TRUE;
+ }
+ }
+ alias++;
+ }
+ type = *alias;
+
+ /* store the argument type in the correct position of the parsed argument list */
+ handlerNum = (uint16_t)(type - UPRINTF_BASE_FMT_HANDLERS);
+ if (handlerNum < UPRINTF_NUM_FMT_HANDLERS) {
+ typelist[pos] = g_u_printf_infos[ handlerNum ].info;
+ } else {
+ typelist[pos] = ufmt_empty;
+ }
+ }
+
+ /* store argument in arglist */
+ for (pos = 0; pos < size; pos++) {
+ switch (typelist[pos]) {
+ case ufmt_string:
+ case ufmt_ustring:
+ case ufmt_pointer:
+ arglist[pos].ptrValue = va_arg(ap, void*);
+ break;
+ case ufmt_char:
+ case ufmt_uchar:
+ case ufmt_int:
+ if (islonglong[pos]) {
+ arglist[pos].int64Value = va_arg(ap, int64_t);
+ }
+ else {
+ arglist[pos].int64Value = va_arg(ap, int32_t);
+ }
+ break;
+ case ufmt_float:
+ arglist[pos].floatValue = (float) va_arg(ap, double);
+ break;
+ case ufmt_double:
+ arglist[pos].doubleValue = va_arg(ap, double);
+ break;
+ default:
+ /* else args is ignored */
+ arglist[pos].ptrValue = NULL;
+ break;
+ }
+ }
+
+ uprv_free(typelist);
+ uprv_free(islonglong);
+
+ return arglist;
+}
projects / apple / icu.git / blobdiff