+++ /dev/null
-/*
- * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/* CFStringScanner.c
- Copyright 1999-2002, Apple, Inc. All rights reserved.
- Responsibility: Ali Ozer
-*/
-
-#include "CFInternal.h"
-#include <CoreFoundation/CFString.h>
-#if !defined(__MACOS8__)
-#include <sys/types.h>
-#endif
-#include <limits.h>
-#include <stdlib.h>
-#include <string.h>
-
-CF_INLINE Boolean __CFCharacterIsADigit(UniChar ch) {
- return (ch >= '0' && ch <= '9') ? true : false;
-}
-
-/* Returns -1 on illegal value */
-CF_INLINE SInt32 __CFCharacterNumericOrHexValue (UniChar ch) {
- if (ch >= '0' && ch <= '9') {
- return ch - '0';
- } else if (ch >= 'A' && ch <= 'F') {
- return ch + 10 - 'A';
- } else if (ch >= 'a' && ch <= 'f') {
- return ch + 10 - 'a';
- } else {
- return -1;
- }
-}
-
-/* Returns -1 on illegal value */
-CF_INLINE SInt32 __CFCharacterNumericValue(UniChar ch) {
- return (ch >= '0' && ch <= '9') ? (ch - '0') : -1;
-}
-
-CF_INLINE UniChar __CFStringGetFirstNonSpaceCharacterFromInlineBuffer(CFStringInlineBuffer *buf, SInt32 *indexPtr) {
- UniChar ch;
- while (__CFIsWhitespace(ch = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr))) (*indexPtr)++;
- return ch;
-}
-
-/* result is int64_t or int, depending on doLonglong
-*/
-__private_extern__ Boolean __CFStringScanInteger(CFStringInlineBuffer *buf, CFDictionaryRef locale, SInt32 *indexPtr, Boolean doLonglong, void *result) {
- Boolean doingLonglong = false; /* Set to true if doLonglong, and we overflow an int... */
- Boolean neg = false;
- int intResult = 0;
- register int64_t longlongResult = 0; /* ??? int64_t is slow when not in regs; I hope this does the right thing. */
- UniChar ch;
-
- ch = __CFStringGetFirstNonSpaceCharacterFromInlineBuffer(buf, indexPtr);
-
- if (ch == '-' || ch == '+') {
- neg = (ch == '-');
- (*indexPtr)++;
- ch = __CFStringGetFirstNonSpaceCharacterFromInlineBuffer(buf, indexPtr);
- }
-
- if (! __CFCharacterIsADigit(ch)) return false; /* No digits, bail out... */
- do {
- if (doingLonglong) {
- if ((longlongResult >= LLONG_MAX / 10) && ((longlongResult > LLONG_MAX / 10) || (__CFCharacterNumericValue(ch) - (neg ? 1 : 0) >= LLONG_MAX - longlongResult * 10))) {
- /* ??? This might not handle LLONG_MIN correctly... */
- longlongResult = neg ? LLONG_MIN : LLONG_MAX;
- neg = false;
- while (__CFCharacterIsADigit(ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr)))); /* Skip remaining digits */
- } else {
- longlongResult = longlongResult * 10 + __CFCharacterNumericValue(ch);
- ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr));
- }
- } else {
- if ((intResult >= INT_MAX / 10) && ((intResult > INT_MAX / 10) || (__CFCharacterNumericValue(ch) - (neg ? 1 : 0) >= INT_MAX - intResult * 10))) {
- // Overflow, check for int64_t...
- if (doLonglong) {
- longlongResult = intResult;
- doingLonglong = true;
- } else {
- /* ??? This might not handle INT_MIN correctly... */
- intResult = neg ? INT_MIN : INT_MAX;
- neg = false;
- while (__CFCharacterIsADigit(ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr)))); /* Skip remaining digits */
- }
- } else {
- intResult = intResult * 10 + __CFCharacterNumericValue(ch);
- ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr));
- }
- }
- } while (__CFCharacterIsADigit(ch));
-
- if (result) {
- if (doLonglong) {
- if (!doingLonglong) longlongResult = intResult;
- *(int64_t *)result = neg ? -longlongResult : longlongResult;
- } else {
- *(int *)result = neg ? -intResult : intResult;
- }
- }
-
- return true;
-}
-
-__private_extern__ Boolean __CFStringScanHex(CFStringInlineBuffer *buf, SInt32 *indexPtr, unsigned *result) {
- UInt32 value = 0;
- SInt32 curDigit;
- UniChar ch;
-
- ch = __CFStringGetFirstNonSpaceCharacterFromInlineBuffer(buf, indexPtr);
- /* Ignore the optional "0x" or "0X"; if it's followed by a non-hex, just parse the "0" and leave pointer at "x" */
- if (ch == '0') {
- ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr));
- if (ch == 'x' || ch == 'X') ch = __CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr));
- curDigit = __CFCharacterNumericOrHexValue(ch);
- if (curDigit == -1) {
- (*indexPtr)--; /* Go back over the "x" or "X" */
- if (result) *result = 0;
- return true; /* We just saw "0" */
- }
- } else {
- curDigit = __CFCharacterNumericOrHexValue(ch);
- if (curDigit == -1) return false;
- }
-
- do {
- if (value > (UINT_MAX >> 4)) {
- value = UINT_MAX; /* We do this over and over again, but it's an error case anyway */
- } else {
- value = (value << 4) + curDigit;
- }
- curDigit = __CFCharacterNumericOrHexValue(__CFStringGetCharacterFromInlineBufferAux(buf, ++(*indexPtr)));
- } while (curDigit != -1);
-
- if (result) *result = value;
- return true;
-}
-
-// Packed array of Boolean
-static const char __CFNumberSet[16] = {
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // nul soh stx etx eot enq ack bel
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // bs ht nl vt np cr so si
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // dle dc1 dc2 dc3 dc4 nak syn etb
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // can em sub esc fs gs rs us
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // sp ! " # $ % & '
- 0X28, // 0, 0, 0, 1, 0, 1, 0, 0, // ( ) * + , - . /
- 0XFF, // 1, 1, 1, 1, 1, 1, 1, 1, // 0 1 2 3 4 5 6 7
- 0X03, // 1, 1, 0, 0, 0, 0, 0, 0, // 8 9 : ; < = > ?
- 0X20, // 0, 0, 0, 0, 0, 1, 0, 0, // @ A B C D E F G
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // H I J K L M N O
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // P Q R S T U V W
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // X Y Z [ \ ] ^ _
- 0X20, // 0, 0, 0, 0, 0, 1, 0, 0, // ` a b c d e f g
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // h i j k l m n o
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0, // p q r s t u v w
- 0X00, // 0, 0, 0, 0, 0, 0, 0, 0 // x y z { | } ~ del
-};
-
-__private_extern__ Boolean __CFStringScanDouble(CFStringInlineBuffer *buf, CFDictionaryRef locale, SInt32 *indexPtr, double *resultPtr) {
- #define STACK_BUFFER_SIZE 256
- #define ALLOC_CHUNK_SIZE 256 // first and subsequent malloc size. Should be greater than STACK_BUFFER_SIZE
- char localCharBuffer[STACK_BUFFER_SIZE];
- char *charPtr = localCharBuffer;
- char *endCharPtr;
- UniChar decimalChar = '.';
- SInt32 numChars = 0;
- SInt32 capacity = STACK_BUFFER_SIZE; // in chars
- double result;
- UniChar ch;
- CFAllocatorRef tmpAlloc = NULL;
-
-#if 0
- if (locale != NULL) {
- CFStringRef decimalSeparator = [locale objectForKey: NSDecimalSeparator];
- if (decimalSeparator != nil) decimalChar = [decimalSeparator characterAtIndex:0];
- }
-#endif
- ch = __CFStringGetFirstNonSpaceCharacterFromInlineBuffer(buf, indexPtr);
- // At this point indexPtr points at the first non-space char
-#if 0
-#warning need to allow, case insensitively, all of: "nan", "inf", "-inf", "+inf", "-infinity", "+infinity", "infinity";
-#warning -- strtod() will actually do most or all of that for us
-#define BITSFORDOUBLENAN ((uint64_t)0x7ff8000000000000)
-#define BITSFORDOUBLEPOSINF ((uint64_t)0x7ff0000000000000)
-#define BITSFORDOUBLENEGINF ((uint64_t)0xfff0000000000000)
- if ('N' == ch || 'n' == ch) { // check for "NaN", case insensitively
- UniChar next1 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 1);
- UniChar next2 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 2);
- if (('a' == next1 || 'A' == next1) &&
- ('N' == next2 || 'n' == next2)) {
- *indexPtr += 3;
- if (resultPtr) *(uint64_t *)resultPtr = BITSFORDOUBLENAN;
- return true;
- }
- }
- if ('I' == ch || 'i' == ch) { // check for "Inf", case insensitively
- UniChar next1 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 1);
- UniChar next2 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 2);
- if (('n' == next1 || 'N' == next1) &&
- ('f' == next2 || 'F' == next2)) {
- *indexPtr += 3;
- if (resultPtr) *(uint64_t *)resultPtr = BITSFORDOUBLEPOSINF;
- return true;
- }
- }
- if ('+' == ch || '-' == ch) { // check for "+/-Inf", case insensitively
- UniChar next1 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 1);
- UniChar next2 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 2);
- UniChar next3 = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + 3);
- if (('I' == next1 || 'i' == next1) &&
- ('n' == next2 || 'N' == next2) &&
- ('f' == next3 || 'F' == next3)) {
- *indexPtr += 4;
- if (resultPtr) *(uint64_t *)resultPtr = ('-' == ch) ? BITSFORDOUBLENEGINF : BITSFORDOUBLEPOSINF;
- return true;
- }
- }
-#endif 0
- do {
- if (ch >= 128 || (__CFNumberSet[ch >> 3] & (1 << (ch & 7))) == 0) {
- // Not in __CFNumberSet
- if (ch != decimalChar) break;
- ch = '.'; // Replace the decimal character with something strtod will understand
- }
- if (numChars >= capacity - 1) {
- capacity += ALLOC_CHUNK_SIZE;
- if (tmpAlloc == NULL) tmpAlloc = __CFGetDefaultAllocator();
- if (charPtr == localCharBuffer) {
- charPtr = CFAllocatorAllocate(tmpAlloc, capacity * sizeof(char), 0);
- memmove(charPtr, localCharBuffer, numChars * sizeof(char));
- } else {
- charPtr = CFAllocatorReallocate(tmpAlloc, charPtr, capacity * sizeof(char), 0);
- }
- }
- charPtr[numChars++] = (char)ch;
- ch = __CFStringGetCharacterFromInlineBufferAux(buf, *indexPtr + numChars);
- } while (true);
- charPtr[numChars] = 0; // Null byte for strtod
-
- result = strtod_l(charPtr, &endCharPtr, NULL);
-
- if (tmpAlloc) CFAllocatorDeallocate(tmpAlloc, charPtr);
- if (charPtr == endCharPtr) return false;
- *indexPtr += (endCharPtr - charPtr);
- if (resultPtr) *resultPtr = result; // only store result if we succeed
-
- return true;
-}
-
-
-#undef STACK_BUFFER_SIZE
-#undef ALLOC_CHUNK_SIZE
-
-
projects / apple / cf.git / blobdiff