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CFCharacterSet.c
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/* CFCharacterSet.c
Copyright (c) 1999-2018, Apple Inc. and the Swift project authors
Portions Copyright (c) 2014-2018, Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
Responsibility: Foundation Team
*/
#include <CoreFoundation/CFCharacterSet.h>
#include <CoreFoundation/CFByteOrder.h>
#include "CFCharacterSetPriv.h"
#include <CoreFoundation/CFData.h>
#include <CoreFoundation/CFString.h>
#include "CFInternal.h"
#include "CFRuntime_Internal.h"
#include <CoreFoundation/CFUniChar.h>
#include "CFUniCharPriv.h"
#include <stdlib.h>
#include <string.h>
#include <unicode/uchar.h>
#define BITSPERBYTE 8 /* (CHAR_BIT * sizeof(unsigned char)) */
#define LOG_BPB 3
#define LOG_BPLW 5
#define NUMCHARACTERS 65536
#define MAX_ANNEX_PLANE (16)
/* Number of things in the array keeping the bits.
*/
#define __kCFBitmapSize (NUMCHARACTERS / BITSPERBYTE)
/* How many elements max can be in an __kCFCharSetClassString CFCharacterSet
*/
#define __kCFStringCharSetMax 64
/* The last builtin set ID number
*/
#define __kCFLastBuiltinSetID kCFCharacterSetNewline
/* How many elements in the "singles" array before we use binary search.
*/
#define __kCFSetBreakeven 10
/* This tells us, within 1k or so, whether a thing is POTENTIALLY in the set (in the bitmap blob of the private structure) before we bother to do specific checking.
*/
#define __CFCSetBitsInRange(n, i) (i[n>>15] & (1L << ((n>>10) % 32)))
/* Compact bitmap params
*/
#define __kCFCompactBitmapNumPages (256)
#define __kCFCompactBitmapMaxPages (128) // the max pages allocated
#define __kCFCompactBitmapPageSize (__kCFBitmapSize / __kCFCompactBitmapNumPages)
typedef struct {
CFCharacterSetRef *_nonBMPPlanes;
unsigned int _validEntriesBitmap;
unsigned char _numOfAllocEntries;
unsigned char _isAnnexInverted;
uint16_t _padding;
} CFCharSetAnnexStruct;
struct __CFCharacterSet {
CFRuntimeBase _base;
CFHashCode _hashValue;
union {
struct {
CFIndex _type;
} _builtin;
struct {
UInt32 _firstChar;
CFIndex _length;
} _range;
struct {
UniChar *_buffer;
CFIndex _length;
} _string;
struct {
uint8_t *_bits;
} _bitmap;
struct {
uint8_t *_cBits;
} _compactBitmap;
} _variants;
CFCharSetAnnexStruct *_annex;
};
/* _base._info values interesting for CFCharacterSet
*/
enum {
__kCFCharSetClassBuiltin = 0,
__kCFCharSetClassRange = 1,
__kCFCharSetClassString = 2,
__kCFCharSetClassBitmap = 3,
__kCFCharSetClassCompactBitmap = 4,
};
/* Inline accessor macros for _base._info
*/
CF_INLINE Boolean __CFCSetIsMutable(CFCharacterSetRef cset) {
return __CFRuntimeGetFlag(cset, 0);
}
CF_INLINE Boolean __CFCSetIsBuiltin(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4) == __kCFCharSetClassBuiltin;
}
CF_INLINE Boolean __CFCSetIsRange(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4) == __kCFCharSetClassRange;
}
CF_INLINE Boolean __CFCSetIsString(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4) == __kCFCharSetClassString;
}
CF_INLINE Boolean __CFCSetIsBitmap(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4) == __kCFCharSetClassBitmap;
}
CF_INLINE Boolean __CFCSetIsCompactBitmap(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4) == __kCFCharSetClassCompactBitmap;
}
CF_INLINE UInt32 __CFCSetClassType(CFCharacterSetRef cset) {
return __CFRuntimeGetValue(cset, 6, 4);
}
CF_INLINE Boolean __CFCSetIsInverted(CFCharacterSetRef cset) {
return __CFRuntimeGetFlag(cset, 3);
}
CF_INLINE Boolean __CFCSetHasHashValue(CFCharacterSetRef cset) {
return __CFRuntimeGetFlag(cset, 2);
}
CF_INLINE void __CFCSetPutIsMutable(CFMutableCharacterSetRef cset, Boolean isMutable) {
__CFRuntimeSetFlag(cset, 0, isMutable);
}
CF_INLINE void __CFCSetPutIsInverted(CFMutableCharacterSetRef cset, Boolean isInverted) {
__CFRuntimeSetFlag(cset, 3, isInverted);
}
CF_INLINE void __CFCSetPutHasHashValue(CFMutableCharacterSetRef cset, Boolean hasHash) {
__CFRuntimeSetFlag(cset, 2, hasHash);
}
CF_INLINE void __CFCSetPutClassType(CFMutableCharacterSetRef cset, UInt32 classType) {
__CFRuntimeSetValue(cset, 6, 4, classType);
}
CF_PRIVATE Boolean __CFCharacterSetIsMutable(CFCharacterSetRef cset) {
return __CFCSetIsMutable(cset);
}
/* Inline contents accessor macros
*/
CF_INLINE CFCharacterSetPredefinedSet __CFCSetBuiltinType(CFCharacterSetRef cset) {return cset->_variants._builtin._type;}
CF_INLINE UInt32 __CFCSetRangeFirstChar(CFCharacterSetRef cset) {return cset->_variants._range._firstChar;}
CF_INLINE CFIndex __CFCSetRangeLength(CFCharacterSetRef cset) {return cset->_variants._range._length;}
CF_INLINE UniChar *__CFCSetStringBuffer(CFCharacterSetRef cset) {return (UniChar*)(cset->_variants._string._buffer);}
CF_INLINE CFIndex __CFCSetStringLength(CFCharacterSetRef cset) {return cset->_variants._string._length;}
CF_INLINE uint8_t *__CFCSetBitmapBits(CFCharacterSetRef cset) {return cset->_variants._bitmap._bits;}
CF_INLINE uint8_t *__CFCSetCompactBitmapBits(CFCharacterSetRef cset) {return cset->_variants._compactBitmap._cBits;}
CF_INLINE void __CFCSetPutBuiltinType(CFMutableCharacterSetRef cset, CFCharacterSetPredefinedSet type) {cset->_variants._builtin._type = type;}
CF_INLINE void __CFCSetPutRangeFirstChar(CFMutableCharacterSetRef cset, UInt32 first) {cset->_variants._range._firstChar = first;}
CF_INLINE void __CFCSetPutRangeLength(CFMutableCharacterSetRef cset, CFIndex length) {cset->_variants._range._length = length;}
CF_INLINE void __CFCSetPutStringBuffer(CFMutableCharacterSetRef cset, UniChar *theBuffer) {cset->_variants._string._buffer = theBuffer;}
CF_INLINE void __CFCSetPutStringLength(CFMutableCharacterSetRef cset, CFIndex length) {cset->_variants._string._length = length;}
CF_INLINE void __CFCSetPutBitmapBits(CFMutableCharacterSetRef cset, uint8_t *bits) {cset->_variants._bitmap._bits = bits;}
CF_INLINE void __CFCSetPutCompactBitmapBits(CFMutableCharacterSetRef cset, uint8_t *bits) {cset->_variants._compactBitmap._cBits = bits;}
/* Validation funcs
*/
#if defined(CF_ENABLE_ASSERTIONS)
CF_INLINE void __CFCSetValidateBuiltinType(CFCharacterSetPredefinedSet type, const char *func) {
CFAssert2(type > 0 && type <= __kCFLastBuiltinSetID, __kCFLogAssertion, "%s: Unknowen builtin type %d", func, type);
}
CF_INLINE void __CFCSetValidateRange(CFRange theRange, const char *func) {
CFAssert3(theRange.location >= 0 && theRange.location + theRange.length <= 0x1FFFFF, __kCFLogAssertion, "%s: Range out of Unicode range (location -> %d length -> %d)", func, theRange.location, theRange.length);
}
CF_INLINE void __CFCSetValidateTypeAndMutability(CFCharacterSetRef cset, const char *func) {
__CFGenericValidateType(cset, _kCFRuntimeIDCFCharacterSet);
CFAssert1(__CFCSetIsMutable(cset), __kCFLogAssertion, "%s: Immutable character set passed to mutable function", func);
}
#else
#define __CFCSetValidateBuiltinType(t,f)
#define __CFCSetValidateRange(r,f)
#define __CFCSetValidateTypeAndMutability(r,f)
#endif
/* Inline utility funcs
*/
static Boolean __CFCSetIsEqualBitmap(const UInt32 *bits1, const UInt32 *bits2) {
CFIndex length = __kCFBitmapSize / sizeof(UInt32);
if (bits1 == bits2) {
return true;
} else if (bits1 && bits2) {
if (bits1 == (const UInt32 *)-1) {
while (length--) if ((UInt32)-1 != *bits2++) return false;
} else if (bits2 == (const UInt32 *)-1) {
while (length--) if ((UInt32)-1 != *bits1++) return false;
} else {
while (length--) if (*bits1++ != *bits2++) return false;
}
return true;
} else if (!bits1 && !bits2) { // empty set
return true;
} else {
if (bits2) bits1 = bits2;
if (bits1 == (const UInt32 *)-1) return false;
while (length--) if (*bits1++) return false;
return true;
}
}
CF_INLINE Boolean __CFCSetIsEqualBitmapInverted(const UInt32 *bits1, const UInt32 *bits2) {
CFIndex length = __kCFBitmapSize / sizeof(UInt32);
while (length--) if (*bits1++ != ~(*(bits2++))) return false;
return true;
}
static Boolean __CFCSetIsBitmapEqualToRange(const UInt32 *bits, UniChar firstChar, UniChar lastChar, Boolean isInverted) {
CFIndex firstCharIndex = firstChar >> LOG_BPB;
CFIndex lastCharIndex = lastChar >> LOG_BPB;
CFIndex length;
UInt32 value;
if (firstCharIndex == lastCharIndex) {
value = ((((UInt32)0xFF) << (firstChar & (BITSPERBYTE - 1))) & (((UInt32)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1))))) << (((sizeof(UInt32) - 1) - (firstCharIndex % sizeof(UInt32))) * BITSPERBYTE);
value = CFSwapInt32HostToBig(value);
firstCharIndex = lastCharIndex = firstChar >> LOG_BPLW;
if (*(bits + firstCharIndex) != (isInverted ? ~value : value)) return FALSE;
} else {
UInt32 firstCharMask;
UInt32 lastCharMask;
length = firstCharIndex % sizeof(UInt32);
firstCharMask = (((((UInt32)0xFF) << (firstChar & (BITSPERBYTE - 1))) & 0xFF) << (((sizeof(UInt32) - 1) - length) * BITSPERBYTE)) | (UInt32)(((UInt64)0xFFFFFFFF) >> ((length + 1) * BITSPERBYTE));
length = lastCharIndex % sizeof(UInt32);
lastCharMask = ((((UInt32)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1)))) << (((sizeof(UInt32) - 1) - length) * BITSPERBYTE)) | (UInt32)(((UInt64)0xFFFFFFFF) << ((sizeof(UInt32) - length) * BITSPERBYTE));
firstCharIndex = firstChar >> LOG_BPLW;
lastCharIndex = lastChar >> LOG_BPLW;
if (firstCharIndex == lastCharIndex) {
firstCharMask &= lastCharMask;
value = CFSwapInt32HostToBig(firstCharMask & lastCharMask);
if (*(bits + firstCharIndex) != (isInverted ? ~value : value)) return FALSE;
} else {
value = CFSwapInt32HostToBig(firstCharMask);
if (*(bits + firstCharIndex) != (isInverted ? ~value : value)) return FALSE;
value = CFSwapInt32HostToBig(lastCharMask);
if (*(bits + lastCharIndex) != (isInverted ? ~value : value)) return FALSE;
}
}
length = firstCharIndex;
value = (isInverted ? ((UInt32)0xFFFFFFFF) : 0);
while (length--) {
if (*(bits++) != value) return FALSE;
}
++bits; // Skip firstCharIndex
length = (lastCharIndex - (firstCharIndex + 1));
value = (isInverted ? 0 : ((UInt32)0xFFFFFFFF));
while (length-- > 0) {
if (*(bits++) != value) return FALSE;
}
if (firstCharIndex != lastCharIndex) ++bits;
length = (0xFFFF >> LOG_BPLW) - lastCharIndex;
value = (isInverted ? ((UInt32)0xFFFFFFFF) : 0);
while (length--) {
if (*(bits++) != value) return FALSE;
}
return TRUE;
}
CF_INLINE Boolean __CFCSetIsBitmapSupersetOfBitmap(const UInt32 *bits1, const UInt32 *bits2, Boolean isInverted1, Boolean isInverted2) {
CFIndex length = __kCFBitmapSize / sizeof(UInt32);
UInt32 val1, val2;
while (length--) {
val2 = (isInverted2 ? ~(*(bits2++)) : *(bits2++));
val1 = (isInverted1 ? ~(*(bits1++)) : *(bits1++)) & val2;
if (val1 != val2) return false;
}
return true;
}
CF_INLINE Boolean __CFCSetHasNonBMPPlane(CFCharacterSetRef cset) { return ((cset)->_annex && (cset)->_annex->_validEntriesBitmap ? true : false); }
CF_INLINE Boolean __CFCSetAnnexIsInverted (CFCharacterSetRef cset) { return ((cset)->_annex && (cset)->_annex->_isAnnexInverted ? true : false); }
CF_INLINE UInt32 __CFCSetAnnexValidEntriesBitmap(CFCharacterSetRef cset) { return ((cset)->_annex ? (cset)->_annex->_validEntriesBitmap : 0); }
CF_INLINE Boolean __CFCSetIsEmpty(CFCharacterSetRef cset) {
if (__CFCSetHasNonBMPPlane(cset) || __CFCSetAnnexIsInverted(cset)) return false;
switch (__CFCSetClassType(cset)) {
case __kCFCharSetClassRange: if (!__CFCSetRangeLength(cset)) return true; break;
case __kCFCharSetClassString: if (!__CFCSetStringLength(cset)) return true; break;
case __kCFCharSetClassBitmap: if (!__CFCSetBitmapBits(cset)) return true; break;
case __kCFCharSetClassCompactBitmap: if (!__CFCSetCompactBitmapBits(cset)) return true; break;
}
return false;
}
CF_INLINE void __CFCSetBitmapAddCharacter(uint8_t *bitmap, UniChar theChar) {
bitmap[(theChar) >> LOG_BPB] |= (((unsigned)1) << (theChar & (BITSPERBYTE - 1)));
}
CF_INLINE void __CFCSetBitmapRemoveCharacter(uint8_t *bitmap, UniChar theChar) {
bitmap[(theChar) >> LOG_BPB] &= ~(((unsigned)1) << (theChar & (BITSPERBYTE - 1)));
}
CF_INLINE Boolean __CFCSetIsMemberBitmap(const uint8_t *bitmap, UniChar theChar) {
return ((bitmap[(theChar) >> LOG_BPB] & (((unsigned)1) << (theChar & (BITSPERBYTE - 1)))) ? true : false);
}
#define NUM_32BIT_SLOTS (NUMCHARACTERS / 32)
CF_INLINE void __CFCSetBitmapFastFillWithValue(UInt32 *bitmap, uint8_t value) {
UInt32 mask = (value << 24) | (value << 16) | (value << 8) | value;
UInt32 numSlots = NUMCHARACTERS / 32;
while (numSlots--) *(bitmap++) = mask;
}
CF_INLINE void __CFCSetBitmapAddCharactersInRange(uint8_t *bitmap, UniChar firstChar, UniChar lastChar) {
if (firstChar == lastChar) {
bitmap[firstChar >> LOG_BPB] |= (((unsigned)1) << (firstChar & (BITSPERBYTE - 1)));
} else {
UInt32 idx = firstChar >> LOG_BPB;
UInt32 max = lastChar >> LOG_BPB;
if (idx == max) {
bitmap[idx] |= (((unsigned)0xFF) << (firstChar & (BITSPERBYTE - 1))) & (((unsigned)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1))));
} else {
bitmap[idx] |= (((unsigned)0xFF) << (firstChar & (BITSPERBYTE - 1)));
bitmap[max] |= (((unsigned)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1))));
++idx;
while (idx < max) bitmap[idx++] = 0xFF;
}
}
}
CF_INLINE void __CFCSetBitmapRemoveCharactersInRange(uint8_t *bitmap, UniChar firstChar, UniChar lastChar) {
UInt32 idx = firstChar >> LOG_BPB;
UInt32 max = lastChar >> LOG_BPB;
if (idx == max) {
bitmap[idx] &= ~((((unsigned)0xFF) << (firstChar & (BITSPERBYTE - 1))) & (((unsigned)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1)))));
} else {
bitmap[idx] &= ~(((unsigned)0xFF) << (firstChar & (BITSPERBYTE - 1)));
bitmap[max] &= ~(((unsigned)0xFF) >> ((BITSPERBYTE - 1) - (lastChar & (BITSPERBYTE - 1))));
++idx;
while (idx < max) bitmap[idx++] = 0;
}
}
#define __CFCSetAnnexBitmapSetPlane(bitmap,plane) ((bitmap) |= (1 << (plane)))
#define __CFCSetAnnexBitmapClearPlane(bitmap,plane) ((bitmap) &= (~(1 << (plane))))
#define __CFCSetAnnexBitmapGetPlane(bitmap,plane) ((bitmap) & (1 << (plane)))
CF_INLINE void __CFCSetAllocateAnnexForPlane(CFCharacterSetRef cset, int plane) {
if (cset->_annex == NULL) {
((CFMutableCharacterSetRef)cset)->_annex = (CFCharSetAnnexStruct *)CFAllocatorAllocate(CFGetAllocator(cset), sizeof(CFCharSetAnnexStruct), 0);
cset->_annex->_numOfAllocEntries = plane;
cset->_annex->_isAnnexInverted = false;
cset->_annex->_validEntriesBitmap = 0;
cset->_annex->_nonBMPPlanes = ((plane > 0) ? (CFCharacterSetRef*)CFAllocatorAllocate(CFGetAllocator(cset), sizeof(CFCharacterSetRef) * plane, 0) : NULL);
} else if (cset->_annex->_numOfAllocEntries < plane) {
cset->_annex->_numOfAllocEntries = plane;
if (NULL == cset->_annex->_nonBMPPlanes) {
cset->_annex->_nonBMPPlanes = (CFCharacterSetRef*)CFAllocatorAllocate(CFGetAllocator(cset), sizeof(CFCharacterSetRef) * plane, 0);
} else {
cset->_annex->_nonBMPPlanes = __CFSafelyReallocateWithAllocator(CFGetAllocator(cset), cset->_annex->_nonBMPPlanes, sizeof(CFCharacterSetRef) * plane, 0, NULL);
}
}
}
CF_INLINE void __CFCSetAnnexSetIsInverted(CFCharacterSetRef cset, Boolean flag) {
if (flag) __CFCSetAllocateAnnexForPlane(cset, 0);
if (cset->_annex) ((CFMutableCharacterSetRef)cset)->_annex->_isAnnexInverted = flag;
}
CF_INLINE void __CFCSetPutCharacterSetToAnnexPlane(CFCharacterSetRef cset, CFCharacterSetRef annexCSet, int plane) {
if (plane < 1) { HALT; }
__CFCSetAllocateAnnexForPlane(cset, plane);
if (__CFCSetAnnexBitmapGetPlane(cset->_annex->_validEntriesBitmap, plane)) CFRelease(cset->_annex->_nonBMPPlanes[plane - 1]);
if (annexCSet) {
cset->_annex->_nonBMPPlanes[plane - 1] = (CFCharacterSetRef)CFRetain(annexCSet);
__CFCSetAnnexBitmapSetPlane(cset->_annex->_validEntriesBitmap, plane);
} else {
__CFCSetAnnexBitmapClearPlane(cset->_annex->_validEntriesBitmap, plane);
}
}
CF_INLINE CFCharacterSetRef __CFCSetGetAnnexPlaneCharacterSet(CFCharacterSetRef cset, int plane) {
if (plane < 1) { HALT; }
__CFCSetAllocateAnnexForPlane(cset, plane);
if (!__CFCSetAnnexBitmapGetPlane(cset->_annex->_validEntriesBitmap, plane)) {
cset->_annex->_nonBMPPlanes[plane - 1] = (CFCharacterSetRef)CFCharacterSetCreateMutable(CFGetAllocator(cset));
__CFCSetAnnexBitmapSetPlane(cset->_annex->_validEntriesBitmap, plane);
}
return cset->_annex->_nonBMPPlanes[plane - 1];
}
CF_INLINE CFCharacterSetRef __CFCSetGetAnnexPlaneCharacterSetNoAlloc(CFCharacterSetRef cset, int plane) {
if (plane < 1) { HALT; }
return (cset->_annex && __CFCSetAnnexBitmapGetPlane(cset->_annex->_validEntriesBitmap, plane) ? cset->_annex->_nonBMPPlanes[plane - 1] : NULL);
}
CF_INLINE void __CFCSetDeallocateAnnexPlane(CFCharacterSetRef cset) {
if (cset->_annex) {
int idx;
for (idx = 0;idx < MAX_ANNEX_PLANE;idx++) {
if (__CFCSetAnnexBitmapGetPlane(cset->_annex->_validEntriesBitmap, idx + 1)) {
CFRelease(cset->_annex->_nonBMPPlanes[idx]);
}
}
CFAllocatorDeallocate(CFGetAllocator(cset), cset->_annex->_nonBMPPlanes);
CFAllocatorDeallocate(CFGetAllocator(cset), cset->_annex);
((CFMutableCharacterSetRef)cset)->_annex = NULL;
}
}
CF_INLINE uint8_t __CFCSetGetHeaderValue(const uint8_t *bitmap, int *numPages) {
uint8_t value = *bitmap;
if ((value == 0) || (value == UINT8_MAX)) {
int numBytes = __kCFCompactBitmapPageSize - 1;
while (numBytes > 0) {
if (*(++bitmap) != value) break;
--numBytes;
}
if (numBytes == 0) return value;
}
return (uint8_t)(++(*numPages));
}
CF_INLINE bool __CFCSetIsMemberInCompactBitmap(const uint8_t *compactBitmap, UTF16Char character) {
uint8_t value = compactBitmap[(character >> 8)]; // Assuming __kCFCompactBitmapNumPages == 256
if (value == 0) {
return false;
} else if (value == UINT8_MAX) {
return true;
} else {
compactBitmap += (__kCFCompactBitmapNumPages + (__kCFCompactBitmapPageSize * (value - 1)));
character &= 0xFF; // Assuming __kCFCompactBitmapNumPages == 256
return ((compactBitmap[(character / BITSPERBYTE)] & (1 << (character % BITSPERBYTE))) ? true : false);
}
}
CF_INLINE uint32_t __CFCSetGetCompactBitmapSize(const uint8_t *compactBitmap) {
uint32_t length = __kCFCompactBitmapNumPages;
uint32_t size = __kCFCompactBitmapNumPages;
uint8_t value;
while (length-- > 0) {
value = *(compactBitmap++);
if ((value != 0) && (value != UINT8_MAX)) size += __kCFCompactBitmapPageSize;
}
return size;
}
CF_INLINE void __CFExpandCompactBitmap(const uint8_t *src, uint8_t *dst) {
const uint8_t *srcBody = src + __kCFCompactBitmapNumPages;
int i;
uint8_t value;
for (i = 0;i < __kCFCompactBitmapNumPages;i++) {
value = *(src++);
if ((value == 0) || (value == UINT8_MAX)) {
memset(dst, value, __kCFCompactBitmapPageSize);
} else {
memmove(dst, srcBody, __kCFCompactBitmapPageSize);
srcBody += __kCFCompactBitmapPageSize;
}
dst += __kCFCompactBitmapPageSize;
}
}
static void __CFCheckForExpandedSet(CFCharacterSetRef cset) {
static int8_t __CFNumberOfPlanesForLogging = -1;
static bool warnedOnce = false;
if (0 > __CFNumberOfPlanesForLogging) {
const char *envVar = __CFgetenv("CFCharacterSetCheckForExpandedSet");
long value = (envVar ? strtol_l(envVar, NULL, 0, NULL) : 0);
__CFNumberOfPlanesForLogging = (int8_t)(((value > 0) && (value <= 16)) ? value : 0);
}
if (__CFNumberOfPlanesForLogging) {
uint32_t entries = __CFCSetAnnexValidEntriesBitmap(cset);
int count = 0;
while (entries) {
if ((entries & 1) && (++count >= __CFNumberOfPlanesForLogging)) {
if (!warnedOnce) {
CFLog(kCFLogLevelWarning, CFSTR("An expanded CFMutableCharacter has been detected. Recommend to compact with CFCharacterSetCreateCopy"));
warnedOnce = true;
}
break;
}
entries >>= 1;
}
}
}
static void __CFCSetGetBitmap(CFCharacterSetRef cset, uint8_t *bits) {
uint8_t *bitmap;
CFIndex length = __kCFBitmapSize;
if (__CFCSetIsBitmap(cset) && (bitmap = __CFCSetBitmapBits(cset))) {
memmove(bits, bitmap, __kCFBitmapSize);
} else {
Boolean isInverted = __CFCSetIsInverted(cset);
uint8_t value = (isInverted ? (uint8_t)-1 : 0);
bitmap = bits;
while (length--) *bitmap++ = value; // Initialize the buffer
if (!__CFCSetIsEmpty(cset)) {
switch (__CFCSetClassType(cset)) {
case __kCFCharSetClassBuiltin: {
UInt8 result = CFUniCharGetBitmapForPlane(__CFCSetBuiltinType(cset), 0, bits, (isInverted != 0));
if (result == kCFUniCharBitmapEmpty && isInverted) {
length = __kCFBitmapSize;
bitmap = bits;
while (length--) *bitmap++ = 0;
} else if (result == kCFUniCharBitmapAll && !isInverted) {
length = __kCFBitmapSize;
bitmap = bits;
while (length--) *bitmap++ = (UInt8)0xFF;
}
}
break;
case __kCFCharSetClassRange: {
UInt32 theChar = __CFCSetRangeFirstChar(cset);
if (theChar < NUMCHARACTERS) { // the range starts in BMP
length = __CFCSetRangeLength(cset);
if (theChar + length >= NUMCHARACTERS) length = NUMCHARACTERS - theChar;
if (isInverted) {
__CFCSetBitmapRemoveCharactersInRange(bits, theChar, (UniChar)(theChar + length) - 1);
} else {
__CFCSetBitmapAddCharactersInRange(bits, theChar, (UniChar)(theChar + length) - 1);
}
}
}
break;
case __kCFCharSetClassString: {
const UniChar *buffer = __CFCSetStringBuffer(cset);
length = __CFCSetStringLength(cset);
while (length--) (isInverted ? __CFCSetBitmapRemoveCharacter(bits, *buffer++) : __CFCSetBitmapAddCharacter(bits, *buffer++));
}
break;
case __kCFCharSetClassCompactBitmap:
__CFExpandCompactBitmap(__CFCSetCompactBitmapBits(cset), bits);
break;
}
}
}
}
static Boolean __CFCharacterSetEqual(CFTypeRef cf1, CFTypeRef cf2);
static Boolean __CFCSetIsEqualAnnex(CFCharacterSetRef cf1, CFCharacterSetRef cf2) {
CFCharacterSetRef subSet1;
CFCharacterSetRef subSet2;
Boolean isAnnexInvertStateIdentical = (__CFCSetAnnexIsInverted(cf1) == __CFCSetAnnexIsInverted(cf2) ? true: false);
int idx;
if (isAnnexInvertStateIdentical) {
if (__CFCSetAnnexValidEntriesBitmap(cf1) != __CFCSetAnnexValidEntriesBitmap(cf2)) return false;
for (idx = 1;idx <= MAX_ANNEX_PLANE;idx++) {
subSet1 = __CFCSetGetAnnexPlaneCharacterSetNoAlloc(cf1, idx);
subSet2 = __CFCSetGetAnnexPlaneCharacterSetNoAlloc(cf2, idx);
if (subSet1 && !__CFCharacterSetEqual(subSet1, subSet2)) return false;
}
} else {
uint8_t bitsBuf[__kCFBitmapSize];
uint8_t bitsBuf2[__kCFBitmapSize];
for (idx = 1;idx <= MAX_ANNEX_PLANE;idx++) {
subSet1 = __CFCSetGetAnnexPlaneCharacterSetNoAlloc(cf1, idx);
subSet2 = __CFCSetGetAnnexPlaneCharacterSetNoAlloc(cf2, idx);
if (subSet1 == NULL && subSet2 == NULL) {
return false;
} else if (subSet1 == NULL) {
if (__CFCSetIsBitmap(subSet2)) {
if (!__CFCSetIsEqualBitmap((const UInt32 *)__CFCSetBitmapBits(subSet2), (const UInt32 *)-1)) {
return false;
}
} else {
__CFCSetGetBitmap(subSet2, bitsBuf);
if (!__CFCSetIsEqualBitmap((const UInt32 *)bitsBuf, (const UInt32 *)-1)) {
return false;
}
}
} else if (subSet2 == NULL) {
if (__CFCSetIsBitmap(subSet1)) {
if (!__CFCSetIsEqualBitmap((const UInt32 *)__CFCSetBitmapBits(subSet1), (const UInt32 *)-1)) {
return false;
}
} else {
__CFCSetGetBitmap(subSet1, bitsBuf);
if (!__CFCSetIsEqualBitmap((const UInt32 *)bitsBuf, (const UInt32 *)-1)) {
return false;
}
}
} else {
Boolean isBitmap1 = __CFCSetIsBitmap(subSet1);
Boolean isBitmap2 = __CFCSetIsBitmap(subSet2);
if (isBitmap1 && isBitmap2) {
if (!__CFCSetIsEqualBitmapInverted((const UInt32 *)__CFCSetBitmapBits(subSet1), (const UInt32 *)__CFCSetBitmapBits(subSet2))) {
return false;
}
} else if (!isBitmap1 && !isBitmap2) {
__CFCSetGetBitmap(subSet1, bitsBuf);
__CFCSetGetBitmap(subSet2, bitsBuf2);
if (!__CFCSetIsEqualBitmapInverted((const UInt32 *)bitsBuf, (const UInt32 *)bitsBuf2)) {
return false;
}
} else {
if (isBitmap2) {
CFCharacterSetRef tmp = subSet2;
subSet2 = subSet1;
subSet1 = tmp;
}
__CFCSetGetBitmap(subSet2, bitsBuf);
if (!__CFCSetIsEqualBitmapInverted((const UInt32 *)__CFCSetBitmapBits(subSet1), (const UInt32 *)bitsBuf)) {
return false;
}
}
}
}
}
return true;
}
/* Compact bitmap
*/
static uint8_t *__CFCreateCompactBitmap(CFAllocatorRef allocator, const uint8_t *bitmap) {
const uint8_t *src;
uint8_t *dst;
int i;
int numPages = 0;
uint8_t header[__kCFCompactBitmapNumPages];
src = bitmap;
for (i = 0;i < __kCFCompactBitmapNumPages;i++) {
header[i] = __CFCSetGetHeaderValue(src, &numPages);
// Allocating more pages is probably not interesting enough to be compact
if (numPages > __kCFCompactBitmapMaxPages) return NULL;
src += __kCFCompactBitmapPageSize;
}
dst = (uint8_t *)CFAllocatorAllocate(allocator, __kCFCompactBitmapNumPages + (__kCFCompactBitmapPageSize * numPages), 0);
if (numPages > 0) {
uint8_t *dstBody = dst + __kCFCompactBitmapNumPages;
src = bitmap;
for (i = 0;i < __kCFCompactBitmapNumPages;i++) {
dst[i] = header[i];
if ((dst[i] != 0) && (dst[i] != UINT8_MAX)) {
memmove(dstBody, src, __kCFCompactBitmapPageSize);
dstBody += __kCFCompactBitmapPageSize;
}
src += __kCFCompactBitmapPageSize;
}
} else {
memmove(dst, header, __kCFCompactBitmapNumPages);
}
return dst;
}
static void __CFCSetMakeCompact(CFMutableCharacterSetRef cset) {
if (__CFCSetIsBitmap(cset) && __CFCSetBitmapBits(cset)) {
uint8_t *bitmap = __CFCSetBitmapBits(cset);
uint8_t *cBitmap = __CFCreateCompactBitmap(CFGetAllocator(cset), bitmap);
if (cBitmap) {
CFAllocatorDeallocate(CFGetAllocator(cset), bitmap);
__CFCSetPutClassType(cset, __kCFCharSetClassCompactBitmap);
__CFCSetPutCompactBitmapBits(cset, cBitmap);
}
}
}
static void __CFCSetAddNonBMPPlanesInRange(CFMutableCharacterSetRef cset, CFRange range) {
int firstChar = (range.location & 0xFFFF);
int maxChar = range.location + range.length;
int idx = range.location >> 16; // first plane
int maxPlane = (maxChar - 1) >> 16; // last plane
CFRange planeRange;
CFMutableCharacterSetRef annexPlane;
maxChar &= 0xFFFF;
for (idx = (idx ? idx : 1);idx <= maxPlane;idx++) {
planeRange.location = __CFMax(firstChar, 0);
planeRange.length = (idx == maxPlane && maxChar ? maxChar : 0x10000) - planeRange.location;
if (__CFCSetAnnexIsInverted(cset)) {
if ((annexPlane = (CFMutableCharacterSetRef)__CFCSetGetAnnexPlaneCharacterSetNoAlloc(cset, idx))) {
CFCharacterSetRemoveCharactersInRange(annexPlane, planeRange);
if (__CFCSetIsEmpty(annexPlane) && !__CFCSetIsInverted(annexPlane)) {
CFRelease(annexPlane);
__CFCSetAnnexBitmapClearPlane(cset->_annex->_validEntriesBitmap, idx);
}
}
} else {
CFCharacterSetAddCharactersInRange((CFMutableCharacterSetRef)__CFCSetGetAnnexPlaneCharacterSet(cset, idx), planeRange);
}
}
if (!__CFCSetHasNonBMPPlane(cset) && !__CFCSetAnnexIsInverted(cset)) __CFCSetDeallocateAnnexPlane(cset);
}
static void __CFCSetRemoveNonBMPPlanesInRange(CFMutableCharacterSetRef cset, CFRange range) {
int firstChar = (range.location & 0xFFFF);
int maxChar = range.location + range.length;
int idx = range.location >> 16; // first plane
int maxPlane = (maxChar - 1) >> 16; // last plane
CFRange planeRange;
CFMutableCharacterSetRef annexPlane;
maxChar &= 0xFFFF;
for (idx = (idx ? idx : 1);idx <= maxPlane;idx++) {
planeRange.location = __CFMax(firstChar, 0);
planeRange.length = (idx == maxPlane && maxChar ? maxChar : 0x10000) - planeRange.location;
if (__CFCSetAnnexIsInverted(cset)) {
CFCharacterSetAddCharactersInRange((CFMutableCharacterSetRef)__CFCSetGetAnnexPlaneCharacterSet(cset, idx), planeRange);
} else {
if ((annexPlane = (CFMutableCharacterSetRef)__CFCSetGetAnnexPlaneCharacterSetNoAlloc(cset, idx))) {
CFCharacterSetRemoveCharactersInRange(annexPlane, planeRange);
if(__CFCSetIsEmpty(annexPlane) && !__CFCSetIsInverted(annexPlane)) {
CFRelease(annexPlane);
__CFCSetAnnexBitmapClearPlane(cset->_annex->_validEntriesBitmap, idx);
}
}
}
}
if (!__CFCSetHasNonBMPPlane(cset) && !__CFCSetAnnexIsInverted(cset)) __CFCSetDeallocateAnnexPlane(cset);
}
static void __CFCSetMakeBitmap(CFMutableCharacterSetRef cset) {
if (!__CFCSetIsBitmap(cset) || !__CFCSetBitmapBits(cset)) {
CFAllocatorRef allocator = CFGetAllocator(cset);
uint8_t *bitmap = (uint8_t *)CFAllocatorAllocate(allocator, __kCFBitmapSize, 0);
__CFCSetGetBitmap(cset, bitmap);
if (__CFCSetIsBuiltin(cset)) {
CFIndex numPlanes = CFUniCharGetNumberOfPlanes(__CFCSetBuiltinType(cset));
if (numPlanes > 1) {
CFMutableCharacterSetRef annexSet;
uint8_t *annexBitmap = NULL;
int idx;
UInt8 result;
__CFCSetAllocateAnnexForPlane(cset, numPlanes - 1);
for (idx = 1;idx < numPlanes;idx++) {
if (NULL == annexBitmap) {
annexBitmap = (uint8_t *)CFAllocatorAllocate(allocator, __kCFBitmapSize, 0);
}
result = CFUniCharGetBitmapForPlane(__CFCSetBuiltinType(cset), idx, annexBitmap, false);
if (result == kCFUniCharBitmapEmpty) continue;
if (result == kCFUniCharBitmapAll) {
CFIndex bitmapLength = __kCFBitmapSize;
uint8_t *bytes = annexBitmap;
while (bitmapLength-- > 0) *(bytes++) = (uint8_t)0xFF;
}
annexSet = (CFMutableCharacterSetRef)__CFCSetGetAnnexPlaneCharacterSet(cset, idx);
__CFCSetPutClassType(annexSet, __kCFCharSetClassBitmap);
__CFCSetPutBitmapBits(annexSet, annexBitmap);
__CFCSetPutIsInverted(annexSet, false);
__CFCSetPutHasHashValue(annexSet, false);
annexBitmap = NULL;
}
if (annexBitmap) CFAllocatorDeallocate(allocator, annexBitmap);
}
} else if (__CFCSetIsCompactBitmap(cset) && __CFCSetCompactBitmapBits(cset)) {
CFAllocatorDeallocate(allocator, __CFCSetCompactBitmapBits(cset));
__CFCSetPutCompactBitmapBits(cset, NULL);
} else if (__CFCSetIsString(cset) && __CFCSetStringBuffer(cset)) {
CFAllocatorDeallocate(allocator, __CFCSetStringBuffer(cset));
__CFCSetPutStringBuffer(cset, NULL);
} else if (__CFCSetIsRange(cset)) { // We may have to allocate annex here
Boolean needsToInvert = (!__CFCSetHasNonBMPPlane(cset) && __CFCSetIsInverted(cset) ? true : false);
__CFCSetAddNonBMPPlanesInRange(cset, CFRangeMake(__CFCSetRangeFirstChar(cset), __CFCSetRangeLength(cset)));
if (needsToInvert) __CFCSetAnnexSetIsInverted(cset, true);
}
__CFCSetPutClassType(cset, __kCFCharSetClassBitmap);
__CFCSetPutBitmapBits(cset, bitmap);
__CFCSetPutIsInverted(cset, false);
}
}
CF_INLINE Boolean __CFCSetGenericInit(CFMutableCharacterSetRef cset, UInt32 classType, Boolean isMutable) {
__CFCSetPutIsMutable(cset, isMutable);
__CFCSetPutClassType(cset, classType);
cset->_hashValue = 0;
cset->_annex = NULL;
return true;
}
CF_INLINE CFMutableCharacterSetRef __CFCSetGenericCreate(CFAllocatorRef allocator, UInt32 classType, Boolean isMutable) {
CFMutableCharacterSetRef cset;
CFIndex size = sizeof(struct __CFCharacterSet) - sizeof(CFRuntimeBase);
cset = (CFMutableCharacterSetRef)_CFRuntimeCreateInstance(allocator, CFCharacterSetGetTypeID(), size, NULL);
if (NULL == cset) return NULL;
__CFCSetGenericInit(cset, classType, isMutable);
return cset;
}
static void __CFApplySurrogatesInString(CFMutableCharacterSetRef cset, CFStringRef string, void (*applyer)(CFMutableCharacterSetRef, CFRange)) {
CFStringInlineBuffer buffer;
CFIndex index, length = CFStringGetLength(string);
CFRange range = CFRangeMake(0, 0);
UTF32Char character;
CFStringInitInlineBuffer(string, &buffer, CFRangeMake(0, length));
for (index = 0;index < length;index++) {
character = __CFStringGetCharacterFromInlineBufferQuick(&buffer, index);
if (CFStringIsSurrogateHighCharacter(character) && ((index + 1) < length)) {
UTF16Char other = __CFStringGetCharacterFromInlineBufferQuick(&buffer, index + 1);
if (CFStringIsSurrogateLowCharacter(other)) {
character = CFStringGetLongCharacterForSurrogatePair(character, other);
if ((range.length + range.location) == character) {
++range.length;
} else {
if (range.length > 0) applyer(cset, range);
range.location = character;
range.length = 1;
}
}
++index; // skip the low surrogate
}
}
if (range.length > 0) applyer(cset, range);
}
/* Bsearch theChar for __kCFCharSetClassString
*/
CF_INLINE Boolean __CFCSetBsearchUniChar(const UniChar *theTable, CFIndex length, UniChar theChar) {
const UniChar *p, *q, *divider;
if ((theChar < theTable[0]) || (theChar > theTable[length - 1])) return false;
p = theTable;
q = p + (length - 1);
while (p <= q) {
divider = p + ((q - p) >> 1); /* divide by 2 */
if (theChar < *divider) q = divider - 1;
else if (theChar > *divider) p = divider + 1;
else return true;
}
return false;
}
/* Array of instantiated builtin set. Note builtin set ID starts with 1 so the array index is ID - 1
*/
static CFCharacterSetRef __CFBuiltinSets[sizeof(CFCharacterSetRef) * __kCFLastBuiltinSetID] = {0};
/* Global lock for character set
*/
#ifndef CHARACTER_SET_LOCK_DEFINED
static OSSpinLock __CFCharacterSetLock = OS_SPINLOCK_INIT;
CF_INLINE void _CFCharacterSetLockGlobal() { OSSpinLockLock(&__CFCharacterSetLock); }
CF_INLINE void _CFCharacterSetUnlockGlobal() { OSSpinLockUnlock(&__CFCharacterSetLock); }
#endif
/* CFBase API functions
*/
static Boolean __CFCharacterSetEqual(CFTypeRef cf1, CFTypeRef cf2) {
Boolean isInvertStateIdentical = (__CFCSetIsInverted((CFCharacterSetRef)cf1) == __CFCSetIsInverted((CFCharacterSetRef)cf2) ? true: false);
Boolean isAnnexInvertStateIdentical = (__CFCSetAnnexIsInverted((CFCharacterSetRef)cf1) == __CFCSetAnnexIsInverted((CFCharacterSetRef)cf2) ? true: false);
CFIndex idx;
CFCharacterSetRef subSet1;
uint8_t bitsBuf[__kCFBitmapSize];
uint8_t *bits;
Boolean isBitmap1;
Boolean isBitmap2;
if (__CFCSetHasHashValue((CFCharacterSetRef)cf1) && __CFCSetHasHashValue((CFCharacterSetRef)cf2) && ((CFCharacterSetRef)cf1)->_hashValue != ((CFCharacterSetRef)cf2)->_hashValue) return false;
if (__CFCSetIsEmpty((CFCharacterSetRef)cf1) && __CFCSetIsEmpty((CFCharacterSetRef)cf2) && !isInvertStateIdentical) return false;
if ((__CFCSetClassType((CFCharacterSetRef)cf1) == __CFCSetClassType((CFCharacterSetRef)cf2)) && !__CFCSetIsCompactBitmap((CFCharacterSetRef)cf1)) { // Types are identical, we can do it fast
switch (__CFCSetClassType((CFCharacterSetRef)cf1)) {
case __kCFCharSetClassBuiltin:
return (__CFCSetBuiltinType((CFCharacterSetRef)cf1) == __CFCSetBuiltinType((CFCharacterSetRef)cf2) && isInvertStateIdentical ? true : false);
case __kCFCharSetClassRange:
return (__CFCSetRangeFirstChar((CFCharacterSetRef)cf1) == __CFCSetRangeFirstChar((CFCharacterSetRef)cf2) && __CFCSetRangeLength((CFCharacterSetRef)cf1) && __CFCSetRangeLength((CFCharacterSetRef)cf2) && isInvertStateIdentical ? true : false);
case __kCFCharSetClassString:
if (!isInvertStateIdentical) {
return false;
}
CFIndex length = __CFCSetStringLength((CFCharacterSetRef)cf1);
if (__CFCSetStringLength((CFCharacterSetRef)cf2) != length) {
return false;
}
// Both strings are sorted and have duplicates removed. We can simply compare the buffers.
if (memcmp(__CFCSetStringBuffer((CFCharacterSetRef)cf1), __CFCSetStringBuffer((CFCharacterSetRef)cf2), length * sizeof(UniChar)) != 0) {
return false;
}
break;
case __kCFCharSetClassBitmap:
if (!__CFCSetIsEqualBitmap((const UInt32 *)__CFCSetBitmapBits((CFCharacterSetRef)cf1), (const UInt32 *)__CFCSetBitmapBits((CFCharacterSetRef)cf2))) return false;
break;
}
return __CFCSetIsEqualAnnex((CFCharacterSetRef)cf1, (CFCharacterSetRef)cf2);
}
// Check for easy empty cases
if (__CFCSetIsEmpty((CFCharacterSetRef)cf1) || __CFCSetIsEmpty((CFCharacterSetRef)cf2)) {
CFCharacterSetRef emptySet = (__CFCSetIsEmpty((CFCharacterSetRef)cf1) ? (CFCharacterSetRef)cf1 : (CFCharacterSetRef)cf2);
CFCharacterSetRef nonEmptySet = (emptySet == cf1 ? (CFCharacterSetRef)cf2 : (CFCharacterSetRef)cf1);
if (__CFCSetIsBuiltin(nonEmptySet)) {
return false;
} else if (__CFCSetIsRange(nonEmptySet)) {
if (isInvertStateIdentical) {
return (__CFCSetRangeLength(nonEmptySet) ? false : true);
} else {
return (__CFCSetRangeLength(nonEmptySet) == 0x110000 ? true : false);
}
} else {
if (__CFCSetAnnexIsInverted(nonEmptySet)) {
if (__CFCSetAnnexValidEntriesBitmap(nonEmptySet) != 0x1FFFE) return false;
} else {
if (__CFCSetAnnexValidEntriesBitmap(nonEmptySet)) return false;
}
if (__CFCSetIsBitmap(nonEmptySet)) {
bits = __CFCSetBitmapBits(nonEmptySet);
} else {
bits = bitsBuf;
__CFCSetGetBitmap(nonEmptySet, bitsBuf);
}
if (__CFCSetIsEqualBitmap(NULL, (const UInt32 *)bits)) {
if (!__CFCSetAnnexIsInverted(nonEmptySet)) return true;
} else {
return false;
}
// Annex set has to be CFRangeMake(0x10000, 0xfffff)
for (idx = 1;idx < MAX_ANNEX_PLANE;idx++) {
if (__CFCSetIsBitmap(nonEmptySet)) {
if (!__CFCSetIsEqualBitmap((__CFCSetAnnexIsInverted(nonEmptySet) ? NULL : (const UInt32 *)-1), (const UInt32 *)bitsBuf)) return false;
} else {
__CFCSetGetBitmap(__CFCSetGetAnnexPlaneCharacterSetNoAlloc(nonEmptySet, idx), bitsBuf);
if (!__CFCSetIsEqualBitmap((const UInt32 *)-1, (const UInt32 *)bitsBuf)) return false;
}
}
return true;
}
}