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CFBuiltinConverters.c
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/* CFBuiltinConverters.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 "CFStringEncodingConverterExt.h"
#include "CFUniChar.h"
#include "CFUniCharPriv.h"
#include "CFUnicodeDecomposition.h"
#include "CFUnicodePrecomposition.h"
#include "CFStringEncodingConverterPriv.h"
#include "CFInternal.h"
#define ASCIINewLine 0x0a
/* Precomposition */
static const uint32_t __CFLatin1CombiningCharBitmap[] = { // 0x300 ~ 0x35FF
0xFBB94010, 0x01800000, 0x0000000,
};
bool CFStringEncodingIsValidCombiningCharacterForLatin1(UniChar character) {
return ((character >= 0x300) && (character < 0x360) && (__CFLatin1CombiningCharBitmap[(character - 0x300) / 32] & (1 << (31 - ((character - 0x300) % 32)))) ? true : false);
}
UniChar CFStringEncodingPrecomposeLatinCharacter(const UniChar *character, CFIndex numChars, CFIndex *usedChars) {
if (numChars > 0) {
UTF32Char ch = *(character++), nextCh, composedChar;
CFIndex usedCharLen = 1;
if (CFUniCharIsSurrogateHighCharacter(ch) || CFUniCharIsSurrogateLowCharacter(ch)) {
if (usedChars) (*usedChars) = usedCharLen;
return ch;
}
while (usedCharLen < numChars) {
nextCh = *(character++);
if (CFUniCharIsSurrogateHighCharacter(nextCh) || CFUniCharIsSurrogateLowCharacter(nextCh)) break;
if (CFUniCharIsMemberOf(nextCh, kCFUniCharNonBaseCharacterSet) && ((composedChar = CFUniCharPrecomposeCharacter(ch, nextCh)) != 0xFFFD)) {
if (composedChar > 0xFFFF) { // Non-base
break;
} else {
ch = composedChar;
}
} else {
break;
}
++usedCharLen;
}
if (usedChars) (*usedChars) = usedCharLen;
if (usedCharLen > 1) return ch;
}
return 0xFFFD;
}
/* ASCII */
static bool __CFToASCII(uint32_t flags, UniChar character, uint8_t *byte) {
if (character < 0x80) {
*byte = (uint8_t)character;
} else {
return false;
}
return true;
}
static bool __CFFromASCII(uint32_t flags, uint8_t byte, UniChar *character) {
if (byte < 0x80) {
*character = (UniChar)byte;
return true;
} else {
return false;
}
}
const CFStringEncodingConverter __CFConverterASCII = {
.encodingClass = kCFStringEncodingConverterCheapEightBit,
.toBytes.cheapEightBit = __CFToASCII,
.toUnicode.cheapEightBit = __CFFromASCII,
.maxBytesPerChar = 1,
.maxDecomposedCharLen = 1,
.toBytesLen = NULL,
.toUnicodeLen = NULL,
.toBytesFallback = NULL,
.toUnicodeFallback = NULL,
.toBytesPrecompose = NULL,
.isValidCombiningChar = NULL,
};
/* ISO Latin 1 (8859-1) */
static bool __CFToISOLatin1(uint32_t flags, UniChar character, uint8_t *byte) {
if (character <= 0xFF) {
*byte = (uint8_t)character;
} else {
return false;
}
return true;
}
static bool __CFFromISOLatin1(uint32_t flags, uint8_t byte, UniChar *character) {
*character = (UniChar)byte;
return true;
}
static CFIndex __CFToISOLatin1Precompose(uint32_t flags, const UniChar *character, CFIndex numChars, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
uint8_t byte;
CFIndex usedCharLen;
if (__CFToISOLatin1(flags, CFStringEncodingPrecomposeLatinCharacter(character, numChars, &usedCharLen), &byte) && byte && (usedCharLen > 1)) {
if (maxByteLen) *bytes = byte;
*usedByteLen = 1;
return usedCharLen;
} else {
return 0;
}
}
const CFStringEncodingConverter __CFConverterISOLatin1 = {
.encodingClass = kCFStringEncodingConverterCheapEightBit,
.toBytes.cheapEightBit = __CFToISOLatin1,
.toUnicode.cheapEightBit = __CFFromISOLatin1,
.maxBytesPerChar = 1,
.maxDecomposedCharLen = 1,
.toBytesLen = NULL,
.toUnicodeLen = NULL,
.toBytesFallback = NULL,
.toUnicodeFallback = NULL,
.toBytesPrecompose = __CFToISOLatin1Precompose,
.isValidCombiningChar = CFStringEncodingIsValidCombiningCharacterForLatin1,
};
/* Mac Roman */
#define NUM_MACROMAN_FROM_UNI 129
static const CFStringEncodingUnicodeTo8BitCharMap macRoman_from_uni[NUM_MACROMAN_FROM_UNI] = {
{ 0x00A0, 0xCA }, /* NO-BREAK SPACE */
{ 0x00A1, 0xC1 }, /* INVERTED EXCLAMATION MARK */
{ 0x00A2, 0xA2 }, /* CENT SIGN */
{ 0x00A3, 0xA3 }, /* POUND SIGN */
{ 0x00A5, 0xB4 }, /* YEN SIGN */
{ 0x00A7, 0xA4 }, /* SECTION SIGN */
{ 0x00A8, 0xAC }, /* DIAERESIS */
{ 0x00A9, 0xA9 }, /* COPYRIGHT SIGN */
{ 0x00AA, 0xBB }, /* FEMININE ORDINAL INDICATOR */
{ 0x00AB, 0xC7 }, /* LEFT-POINTING DOUBLE ANGLE QUOTATION MARK */
{ 0x00AC, 0xC2 }, /* NOT SIGN */
{ 0x00AE, 0xA8 }, /* REGISTERED SIGN */
{ 0x00AF, 0xF8 }, /* MACRON */
{ 0x00B0, 0xA1 }, /* DEGREE SIGN */
{ 0x00B1, 0xB1 }, /* PLUS-MINUS SIGN */
{ 0x00B4, 0xAB }, /* ACUTE ACCENT */
{ 0x00B5, 0xB5 }, /* MICRO SIGN */
{ 0x00B6, 0xA6 }, /* PILCROW SIGN */
{ 0x00B7, 0xE1 }, /* MIDDLE DOT */
{ 0x00B8, 0xFC }, /* CEDILLA */
{ 0x00BA, 0xBC }, /* MASCULINE ORDINAL INDICATOR */
{ 0x00BB, 0xC8 }, /* RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK */
{ 0x00BF, 0xC0 }, /* INVERTED QUESTION MARK */
{ 0x00C0, 0xCB }, /* LATIN CAPITAL LETTER A WITH GRAVE */
{ 0x00C1, 0xE7 }, /* LATIN CAPITAL LETTER A WITH ACUTE */
{ 0x00C2, 0xE5 }, /* LATIN CAPITAL LETTER A WITH CIRCUMFLEX */
{ 0x00C3, 0xCC }, /* LATIN CAPITAL LETTER A WITH TILDE */
{ 0x00C4, 0x80 }, /* LATIN CAPITAL LETTER A WITH DIAERESIS */
{ 0x00C5, 0x81 }, /* LATIN CAPITAL LETTER A WITH RING ABOVE */
{ 0x00C6, 0xAE }, /* LATIN CAPITAL LIGATURE AE */
{ 0x00C7, 0x82 }, /* LATIN CAPITAL LETTER C WITH CEDILLA */
{ 0x00C8, 0xE9 }, /* LATIN CAPITAL LETTER E WITH GRAVE */
{ 0x00C9, 0x83 }, /* LATIN CAPITAL LETTER E WITH ACUTE */
{ 0x00CA, 0xE6 }, /* LATIN CAPITAL LETTER E WITH CIRCUMFLEX */
{ 0x00CB, 0xE8 }, /* LATIN CAPITAL LETTER E WITH DIAERESIS */
{ 0x00CC, 0xED }, /* LATIN CAPITAL LETTER I WITH GRAVE */
{ 0x00CD, 0xEA }, /* LATIN CAPITAL LETTER I WITH ACUTE */
{ 0x00CE, 0xEB }, /* LATIN CAPITAL LETTER I WITH CIRCUMFLEX */
{ 0x00CF, 0xEC }, /* LATIN CAPITAL LETTER I WITH DIAERESIS */
{ 0x00D1, 0x84 }, /* LATIN CAPITAL LETTER N WITH TILDE */
{ 0x00D2, 0xF1 }, /* LATIN CAPITAL LETTER O WITH GRAVE */
{ 0x00D3, 0xEE }, /* LATIN CAPITAL LETTER O WITH ACUTE */
{ 0x00D4, 0xEF }, /* LATIN CAPITAL LETTER O WITH CIRCUMFLEX */
{ 0x00D5, 0xCD }, /* LATIN CAPITAL LETTER O WITH TILDE */
{ 0x00D6, 0x85 }, /* LATIN CAPITAL LETTER O WITH DIAERESIS */
{ 0x00D8, 0xAF }, /* LATIN CAPITAL LETTER O WITH STROKE */
{ 0x00D9, 0xF4 }, /* LATIN CAPITAL LETTER U WITH GRAVE */
{ 0x00DA, 0xF2 }, /* LATIN CAPITAL LETTER U WITH ACUTE */
{ 0x00DB, 0xF3 }, /* LATIN CAPITAL LETTER U WITH CIRCUMFLEX */
{ 0x00DC, 0x86 }, /* LATIN CAPITAL LETTER U WITH DIAERESIS */
{ 0x00DF, 0xA7 }, /* LATIN SMALL LETTER SHARP S */
{ 0x00E0, 0x88 }, /* LATIN SMALL LETTER A WITH GRAVE */
{ 0x00E1, 0x87 }, /* LATIN SMALL LETTER A WITH ACUTE */
{ 0x00E2, 0x89 }, /* LATIN SMALL LETTER A WITH CIRCUMFLEX */
{ 0x00E3, 0x8B }, /* LATIN SMALL LETTER A WITH TILDE */
{ 0x00E4, 0x8A }, /* LATIN SMALL LETTER A WITH DIAERESIS */
{ 0x00E5, 0x8C }, /* LATIN SMALL LETTER A WITH RING ABOVE */
{ 0x00E6, 0xBE }, /* LATIN SMALL LIGATURE AE */
{ 0x00E7, 0x8D }, /* LATIN SMALL LETTER C WITH CEDILLA */
{ 0x00E8, 0x8F }, /* LATIN SMALL LETTER E WITH GRAVE */
{ 0x00E9, 0x8E }, /* LATIN SMALL LETTER E WITH ACUTE */
{ 0x00EA, 0x90 }, /* LATIN SMALL LETTER E WITH CIRCUMFLEX */
{ 0x00EB, 0x91 }, /* LATIN SMALL LETTER E WITH DIAERESIS */
{ 0x00EC, 0x93 }, /* LATIN SMALL LETTER I WITH GRAVE */
{ 0x00ED, 0x92 }, /* LATIN SMALL LETTER I WITH ACUTE */
{ 0x00EE, 0x94 }, /* LATIN SMALL LETTER I WITH CIRCUMFLEX */
{ 0x00EF, 0x95 }, /* LATIN SMALL LETTER I WITH DIAERESIS */
{ 0x00F1, 0x96 }, /* LATIN SMALL LETTER N WITH TILDE */
{ 0x00F2, 0x98 }, /* LATIN SMALL LETTER O WITH GRAVE */
{ 0x00F3, 0x97 }, /* LATIN SMALL LETTER O WITH ACUTE */
{ 0x00F4, 0x99 }, /* LATIN SMALL LETTER O WITH CIRCUMFLEX */
{ 0x00F5, 0x9B }, /* LATIN SMALL LETTER O WITH TILDE */
{ 0x00F6, 0x9A }, /* LATIN SMALL LETTER O WITH DIAERESIS */
{ 0x00F7, 0xD6 }, /* DIVISION SIGN */
{ 0x00F8, 0xBF }, /* LATIN SMALL LETTER O WITH STROKE */
{ 0x00F9, 0x9D }, /* LATIN SMALL LETTER U WITH GRAVE */
{ 0x00FA, 0x9C }, /* LATIN SMALL LETTER U WITH ACUTE */
{ 0x00FB, 0x9E }, /* LATIN SMALL LETTER U WITH CIRCUMFLEX */
{ 0x00FC, 0x9F }, /* LATIN SMALL LETTER U WITH DIAERESIS */
{ 0x00FF, 0xD8 }, /* LATIN SMALL LETTER Y WITH DIAERESIS */
{ 0x0131, 0xF5 }, /* LATIN SMALL LETTER DOTLESS I */
{ 0x0152, 0xCE }, /* LATIN CAPITAL LIGATURE OE */
{ 0x0153, 0xCF }, /* LATIN SMALL LIGATURE OE */
{ 0x0178, 0xD9 }, /* LATIN CAPITAL LETTER Y WITH DIAERESIS */
{ 0x0192, 0xC4 }, /* LATIN SMALL LETTER F WITH HOOK */
{ 0x02C6, 0xF6 }, /* MODIFIER LETTER CIRCUMFLEX ACCENT */
{ 0x02C7, 0xFF }, /* CARON */
{ 0x02D8, 0xF9 }, /* BREVE */
{ 0x02D9, 0xFA }, /* DOT ABOVE */
{ 0x02DA, 0xFB }, /* RING ABOVE */
{ 0x02DB, 0xFE }, /* OGONEK */
{ 0x02DC, 0xF7 }, /* SMALL TILDE */
{ 0x02DD, 0xFD }, /* DOUBLE ACUTE ACCENT */
{ 0x03A9, 0xBD }, /* OHM SIGN (Canonical ?) */
{ 0x03C0, 0xB9 }, /* GREEK SMALL LETTER PI */
{ 0x2013, 0xD0 }, /* EN DASH */
{ 0x2014, 0xD1 }, /* EM DASH */
{ 0x2018, 0xD4 }, /* LEFT SINGLE QUOTATION MARK */
{ 0x2019, 0xD5 }, /* RIGHT SINGLE QUOTATION MARK */
{ 0x201A, 0xE2 }, /* SINGLE LOW-9 QUOTATION MARK */
{ 0x201C, 0xD2 }, /* LEFT DOUBLE QUOTATION MARK */
{ 0x201D, 0xD3 }, /* RIGHT DOUBLE QUOTATION MARK */
{ 0x201E, 0xE3 }, /* DOUBLE LOW-9 QUOTATION MARK */
{ 0x2020, 0xA0 }, /* DAGGER */
{ 0x2021, 0xE0 }, /* DOUBLE DAGGER */
{ 0x2022, 0xA5 }, /* BULLET */
{ 0x2026, 0xC9 }, /* HORIZONTAL ELLIPSIS */
{ 0x2030, 0xE4 }, /* PER MILLE SIGN */
{ 0x2039, 0xDC }, /* SINGLE LEFT-POINTING ANGLE QUOTATION MARK */
{ 0x203A, 0xDD }, /* SINGLE RIGHT-POINTING ANGLE QUOTATION MARK */
{ 0x2044, 0xDA }, /* FRACTION SLASH */
{ 0x20AC, 0xDB }, /* EURO SIGN */
{ 0x2122, 0xAA }, /* TRADE MARK SIGN */
{ 0x2126, 0xBD }, /* OHM SIGN */
{ 0x2202, 0xB6 }, /* PARTIAL DIFFERENTIAL */
{ 0x2206, 0xC6 }, /* INCREMENT */
{ 0x220F, 0xB8 }, /* N-ARY PRODUCT */
{ 0x2211, 0xB7 }, /* N-ARY SUMMATION */
{ 0x221A, 0xC3 }, /* SQUARE ROOT */
{ 0x221E, 0xB0 }, /* INFINITY */
{ 0x222B, 0xBA }, /* INTEGRAL */
{ 0x2248, 0xC5 }, /* ALMOST EQUAL TO */
{ 0x2260, 0xAD }, /* NOT EQUAL TO */
{ 0x2264, 0xB2 }, /* LESS-THAN OR EQUAL TO */
{ 0x2265, 0xB3 }, /* GREATER-THAN OR EQUAL TO */
{ 0x25CA, 0xD7 }, /* LOZENGE */
{ 0xF8FF, 0xF0 }, /* Apple logo */
{ 0xFB01, 0xDE }, /* LATIN SMALL LIGATURE FI */
{ 0xFB02, 0xDF }, /* LATIN SMALL LIGATURE FL */
};
static bool __CFToMacRoman(uint32_t flags, UniChar character, uint8_t *byte) {
if (character < 0x80) {
*byte = (uint8_t)character;
return true;
} else {
return CFStringEncodingUnicodeTo8BitEncoding(macRoman_from_uni, NUM_MACROMAN_FROM_UNI, character, byte);
}
}
static const UniChar macRoman_to_uni[128] = {
0x00C4, /* LATIN CAPITAL LETTER A WITH DIAERESIS */
0x00C5, /* LATIN CAPITAL LETTER A WITH RING ABOVE */
0x00C7, /* LATIN CAPITAL LETTER C WITH CEDILLA */
0x00C9, /* LATIN CAPITAL LETTER E WITH ACUTE */
0x00D1, /* LATIN CAPITAL LETTER N WITH TILDE */
0x00D6, /* LATIN CAPITAL LETTER O WITH DIAERESIS */
0x00DC, /* LATIN CAPITAL LETTER U WITH DIAERESIS */
0x00E1, /* LATIN SMALL LETTER A WITH ACUTE */
0x00E0, /* LATIN SMALL LETTER A WITH GRAVE */
0x00E2, /* LATIN SMALL LETTER A WITH CIRCUMFLEX */
0x00E4, /* LATIN SMALL LETTER A WITH DIAERESIS */
0x00E3, /* LATIN SMALL LETTER A WITH TILDE */
0x00E5, /* LATIN SMALL LETTER A WITH RING ABOVE */
0x00E7, /* LATIN SMALL LETTER C WITH CEDILLA */
0x00E9, /* LATIN SMALL LETTER E WITH ACUTE */
0x00E8, /* LATIN SMALL LETTER E WITH GRAVE */
0x00EA, /* LATIN SMALL LETTER E WITH CIRCUMFLEX */
0x00EB, /* LATIN SMALL LETTER E WITH DIAERESIS */
0x00ED, /* LATIN SMALL LETTER I WITH ACUTE */
0x00EC, /* LATIN SMALL LETTER I WITH GRAVE */
0x00EE, /* LATIN SMALL LETTER I WITH CIRCUMFLEX */
0x00EF, /* LATIN SMALL LETTER I WITH DIAERESIS */
0x00F1, /* LATIN SMALL LETTER N WITH TILDE */
0x00F3, /* LATIN SMALL LETTER O WITH ACUTE */
0x00F2, /* LATIN SMALL LETTER O WITH GRAVE */
0x00F4, /* LATIN SMALL LETTER O WITH CIRCUMFLEX */
0x00F6, /* LATIN SMALL LETTER O WITH DIAERESIS */
0x00F5, /* LATIN SMALL LETTER O WITH TILDE */
0x00FA, /* LATIN SMALL LETTER U WITH ACUTE */
0x00F9, /* LATIN SMALL LETTER U WITH GRAVE */
0x00FB, /* LATIN SMALL LETTER U WITH CIRCUMFLEX */
0x00FC, /* LATIN SMALL LETTER U WITH DIAERESIS */
0x2020, /* DAGGER */
0x00B0, /* DEGREE SIGN */
0x00A2, /* CENT SIGN */
0x00A3, /* POUND SIGN */
0x00A7, /* SECTION SIGN */
0x2022, /* BULLET */
0x00B6, /* PILCROW SIGN */
0x00DF, /* LATIN SMALL LETTER SHARP S */
0x00AE, /* REGISTERED SIGN */
0x00A9, /* COPYRIGHT SIGN */
0x2122, /* TRADE MARK SIGN */
0x00B4, /* ACUTE ACCENT */
0x00A8, /* DIAERESIS */
0x2260, /* NOT EQUAL TO */
0x00C6, /* LATIN CAPITAL LIGATURE AE */
0x00D8, /* LATIN CAPITAL LETTER O WITH STROKE */
0x221E, /* INFINITY */
0x00B1, /* PLUS-MINUS SIGN */
0x2264, /* LESS-THAN OR EQUAL TO */
0x2265, /* GREATER-THAN OR EQUAL TO */
0x00A5, /* YEN SIGN */
0x00B5, /* MICRO SIGN */
0x2202, /* PARTIAL DIFFERENTIAL */
0x2211, /* N-ARY SUMMATION */
0x220F, /* N-ARY PRODUCT */
0x03C0, /* GREEK SMALL LETTER PI */
0x222B, /* INTEGRAL */
0x00AA, /* FEMININE ORDINAL INDICATOR */
0x00BA, /* MASCULINE ORDINAL INDICATOR */
0x03A9, /* OHM SIGN (Canonical mapping) */
0x00E6, /* LATIN SMALL LIGATURE AE */
0x00F8, /* LATIN SMALL LETTER O WITH STROKE */
0x00BF, /* INVERTED QUESTION MARK */
0x00A1, /* INVERTED EXCLAMATION MARK */
0x00AC, /* NOT SIGN */
0x221A, /* SQUARE ROOT */
0x0192, /* LATIN SMALL LETTER F WITH HOOK */
0x2248, /* ALMOST EQUAL TO */
0x2206, /* INCREMENT */
0x00AB, /* LEFT-POINTING DOUBLE ANGLE QUOTATION MARK */
0x00BB, /* RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK */
0x2026, /* HORIZONTAL ELLIPSIS */
0x00A0, /* NO-BREAK SPACE */
0x00C0, /* LATIN CAPITAL LETTER A WITH GRAVE */
0x00C3, /* LATIN CAPITAL LETTER A WITH TILDE */
0x00D5, /* LATIN CAPITAL LETTER O WITH TILDE */
0x0152, /* LATIN CAPITAL LIGATURE OE */
0x0153, /* LATIN SMALL LIGATURE OE */
0x2013, /* EN DASH */
0x2014, /* EM DASH */
0x201C, /* LEFT DOUBLE QUOTATION MARK */
0x201D, /* RIGHT DOUBLE QUOTATION MARK */
0x2018, /* LEFT SINGLE QUOTATION MARK */
0x2019, /* RIGHT SINGLE QUOTATION MARK */
0x00F7, /* DIVISION SIGN */
0x25CA, /* LOZENGE */
0x00FF, /* LATIN SMALL LETTER Y WITH DIAERESIS */
0x0178, /* LATIN CAPITAL LETTER Y WITH DIAERESIS */
0x2044, /* FRACTION SLASH */
0x20AC, /* EURO SIGN */
0x2039, /* SINGLE LEFT-POINTING ANGLE QUOTATION MARK */
0x203A, /* SINGLE RIGHT-POINTING ANGLE QUOTATION MARK */
0xFB01, /* LATIN SMALL LIGATURE FI */
0xFB02, /* LATIN SMALL LIGATURE FL */
0x2021, /* DOUBLE DAGGER */
0x00B7, /* MIDDLE DOT */
0x201A, /* SINGLE LOW-9 QUOTATION MARK */
0x201E, /* DOUBLE LOW-9 QUOTATION MARK */
0x2030, /* PER MILLE SIGN */
0x00C2, /* LATIN CAPITAL LETTER A WITH CIRCUMFLEX */
0x00CA, /* LATIN CAPITAL LETTER E WITH CIRCUMFLEX */
0x00C1, /* LATIN CAPITAL LETTER A WITH ACUTE */
0x00CB, /* LATIN CAPITAL LETTER E WITH DIAERESIS */
0x00C8, /* LATIN CAPITAL LETTER E WITH GRAVE */
0x00CD, /* LATIN CAPITAL LETTER I WITH ACUTE */
0x00CE, /* LATIN CAPITAL LETTER I WITH CIRCUMFLEX */
0x00CF, /* LATIN CAPITAL LETTER I WITH DIAERESIS */
0x00CC, /* LATIN CAPITAL LETTER I WITH GRAVE */
0x00D3, /* LATIN CAPITAL LETTER O WITH ACUTE */
0x00D4, /* LATIN CAPITAL LETTER O WITH CIRCUMFLEX */
0xF8FF, /* Apple logo */
0x00D2, /* LATIN CAPITAL LETTER O WITH GRAVE */
0x00DA, /* LATIN CAPITAL LETTER U WITH ACUTE */
0x00DB, /* LATIN CAPITAL LETTER U WITH CIRCUMFLEX */
0x00D9, /* LATIN CAPITAL LETTER U WITH GRAVE */
0x0131, /* LATIN SMALL LETTER DOTLESS I */
0x02C6, /* MODIFIER LETTER CIRCUMFLEX ACCENT */
0x02DC, /* SMALL TILDE */
0x00AF, /* MACRON */
0x02D8, /* BREVE */
0x02D9, /* DOT ABOVE */
0x02DA, /* RING ABOVE */
0x00B8, /* CEDILLA */
0x02DD, /* DOUBLE ACUTE ACCENT */
0x02DB, /* OGONEK */
0x02C7, /* CARON */
};
static bool __CFFromMacRoman(uint32_t flags, uint8_t byte, UniChar *character) {
*character = (byte < 0x80 ? (UniChar)byte : macRoman_to_uni[byte - 0x80]);
return true;
}
static CFIndex __CFToMacRomanPrecompose(uint32_t flags, const UniChar *character, CFIndex numChars, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
uint8_t byte;
CFIndex usedCharLen;
if (__CFToMacRoman(flags, CFStringEncodingPrecomposeLatinCharacter(character, numChars, &usedCharLen), &byte) && byte && (usedCharLen > 1)) {
if (maxByteLen) *bytes = byte;
*usedByteLen = 1;
return usedCharLen;
} else {
return 0;
}
}
const CFStringEncodingConverter __CFConverterMacRoman = {
.encodingClass = kCFStringEncodingConverterCheapEightBit,
.toBytes.cheapEightBit = __CFToMacRoman,
.toUnicode.cheapEightBit = __CFFromMacRoman,
.maxBytesPerChar = 1,
.maxDecomposedCharLen = 1,
.toBytesLen = NULL,
.toUnicodeLen = NULL,
.toBytesFallback = NULL,
.toUnicodeFallback = NULL,
.toBytesPrecompose = __CFToMacRomanPrecompose,
.isValidCombiningChar = CFStringEncodingIsValidCombiningCharacterForLatin1,
};
/* Win Latin1 (ANSI CodePage 1252) */
#define NUM_1252_FROM_UNI 27
static const CFStringEncodingUnicodeTo8BitCharMap cp1252_from_uni[NUM_1252_FROM_UNI] = {
{0x0152, 0x8C}, // LATIN CAPITAL LIGATURE OE
{0x0153, 0x9C}, // LATIN SMALL LIGATURE OE
{0x0160, 0x8A}, // LATIN CAPITAL LETTER S WITH CARON
{0x0161, 0x9A}, // LATIN SMALL LETTER S WITH CARON
{0x0178, 0x9F}, // LATIN CAPITAL LETTER Y WITH DIAERESIS
{0x017D, 0x8E}, // LATIN CAPITAL LETTER Z WITH CARON
{0x017E, 0x9E}, // LATIN SMALL LETTER Z WITH CARON
{0x0192, 0x83}, // LATIN SMALL LETTER F WITH HOOK
{0x02C6, 0x88}, // MODIFIER LETTER CIRCUMFLEX ACCENT
{0x02DC, 0x98}, // SMALL TILDE
{0x2013, 0x96}, // EN DASH
{0x2014, 0x97}, // EM DASH
{0x2018, 0x91}, // LEFT SINGLE QUOTATION MARK
{0x2019, 0x92}, // RIGHT SINGLE QUOTATION MARK
{0x201A, 0x82}, // SINGLE LOW-9 QUOTATION MARK
{0x201C, 0x93}, // LEFT DOUBLE QUOTATION MARK
{0x201D, 0x94}, // RIGHT DOUBLE QUOTATION MARK
{0x201E, 0x84}, // DOUBLE LOW-9 QUOTATION MARK
{0x2020, 0x86}, // DAGGER
{0x2021, 0x87}, // DOUBLE DAGGER
{0x2022, 0x95}, // BULLET
{0x2026, 0x85}, // HORIZONTAL ELLIPSIS
{0x2030, 0x89}, // PER MILLE SIGN
{0x2039, 0x8B}, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK
{0x203A, 0x9B}, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
{0x20AC, 0x80}, // EURO SIGN
{0x2122, 0x99}, // TRADE MARK SIGN
};
static bool __CFToWinLatin1(uint32_t flags, UniChar character, uint8_t *byte) {
if ((character < 0x80) || ((character > 0x9F) && (character <= 0x00FF))) {
*byte = (uint8_t)character;
return true;
}
return CFStringEncodingUnicodeTo8BitEncoding(cp1252_from_uni, NUM_1252_FROM_UNI, character, byte);
}
static const uint16_t cp1252_to_uni[32] = {
0x20AC, // EURO SIGN
0xFFFD, // NOT USED
0x201A, // SINGLE LOW-9 QUOTATION MARK
0x0192, // LATIN SMALL LETTER F WITH HOOK
0x201E, // DOUBLE LOW-9 QUOTATION MARK
0x2026, // HORIZONTAL ELLIPSIS
0x2020, // DAGGER
0x2021, // DOUBLE DAGGER
0x02C6, // MODIFIER LETTER CIRCUMFLEX ACCENT
0x2030, // PER MILLE SIGN
0x0160, // LATIN CAPITAL LETTER S WITH CARON
0x2039, // SINGLE LEFT-POINTING ANGLE QUOTATION MARK
0x0152, // LATIN CAPITAL LIGATURE OE
0xFFFD, // NOT USED
0x017D, // LATIN CAPITAL LETTER Z WITH CARON
0xFFFD, // NOT USED
0xFFFD, // NOT USED
0x2018, // LEFT SINGLE QUOTATION MARK
0x2019, // RIGHT SINGLE QUOTATION MARK
0x201C, // LEFT DOUBLE QUOTATION MARK
0x201D, // RIGHT DOUBLE QUOTATION MARK
0x2022, // BULLET
0x2013, // EN DASH
0x2014, // EM DASH
0x02DC, // SMALL TILDE
0x2122, // TRADE MARK SIGN
0x0161, // LATIN SMALL LETTER S WITH CARON
0x203A, // SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
0x0153, // LATIN SMALL LIGATURE OE
0xFFFD, // NOT USED
0x017E, // LATIN SMALL LETTER Z WITH CARON
0x0178, // LATIN CAPITAL LETTER Y WITH DIAERESIS
};
static bool __CFFromWinLatin1(uint32_t flags, uint8_t byte, UniChar *character) {
*character = (byte < 0x80 || byte > 0x9F ? (UniChar)byte : cp1252_to_uni[byte - 0x80]);
return (*character != 0xFFFD);
}
static CFIndex __CFToWinLatin1Precompose(uint32_t flags, const UniChar *character, CFIndex numChars, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
uint8_t byte;
CFIndex usedCharLen;
if (__CFToWinLatin1(flags, CFStringEncodingPrecomposeLatinCharacter(character, numChars, &usedCharLen), &byte) && byte && (usedCharLen > 1)) {
if (maxByteLen) *bytes = byte;
*usedByteLen = 1;
return usedCharLen;
} else {
return 0;
}
}
const CFStringEncodingConverter __CFConverterWinLatin1 = {
.encodingClass = kCFStringEncodingConverterCheapEightBit,
.toBytes.cheapEightBit = __CFToWinLatin1,
.toUnicode.cheapEightBit = __CFFromWinLatin1,
.maxBytesPerChar = 1,
.maxDecomposedCharLen = 1,
.toBytesLen = NULL,
.toUnicodeLen = NULL,
.toBytesFallback = NULL,
.toUnicodeFallback = NULL,
.toBytesPrecompose = __CFToWinLatin1Precompose,
.isValidCombiningChar = CFStringEncodingIsValidCombiningCharacterForLatin1,
};
/* NEXTSTEP Encoding */
#define NUM_NEXTSTEP_FROM_UNI 127
static const CFStringEncodingUnicodeTo8BitCharMap nextstep_from_tab[NUM_NEXTSTEP_FROM_UNI] = {
{ 0x00a0, 0x80 },
{ 0x00a1, 0xa1 },
{ 0x00a2, 0xa2 },
{ 0x00a3, 0xa3 },
{ 0x00a4, 0xa8 },
{ 0x00a5, 0xa5 },
{ 0x00a6, 0xb5 },
{ 0x00a7, 0xa7 },
{ 0x00a8, 0xc8 },
{ 0x00a9, 0xa0 },
{ 0x00aa, 0xe3 },
{ 0x00ab, 0xab },
{ 0x00ac, 0xbe },
/* { 0x00ad, 0x2d }, <= 96/10/25 rick removed; converts soft-hyphen to hyphen! */
{ 0x00ae, 0xb0 },
{ 0x00af, 0xc5 },
{ 0x00b1, 0xd1 },
{ 0x00b2, 0xc9 },
{ 0x00b3, 0xcc },
{ 0x00b4, 0xc2 },
{ 0x00b5, 0x9d },
{ 0x00b6, 0xb6 },
{ 0x00b7, 0xb4 },
{ 0x00b8, 0xcb },
{ 0x00b9, 0xc0 },
{ 0x00ba, 0xeb },
{ 0x00bb, 0xbb },
{ 0x00bc, 0xd2 },
{ 0x00bd, 0xd3 },
{ 0x00be, 0xd4 },
{ 0x00bf, 0xbf },
{ 0x00c0, 0x81 },
{ 0x00c1, 0x82 },
{ 0x00c2, 0x83 },
{ 0x00c3, 0x84 },
{ 0x00c4, 0x85 },
{ 0x00c5, 0x86 },
{ 0x00c6, 0xe1 },
{ 0x00c7, 0x87 },
{ 0x00c8, 0x88 },
{ 0x00c9, 0x89 },
{ 0x00ca, 0x8a },
{ 0x00cb, 0x8b },
{ 0x00cc, 0x8c },
{ 0x00cd, 0x8d },
{ 0x00ce, 0x8e },
{ 0x00cf, 0x8f },
{ 0x00d0, 0x90 },
{ 0x00d1, 0x91 },
{ 0x00d2, 0x92 },
{ 0x00d3, 0x93 },
{ 0x00d4, 0x94 },
{ 0x00d5, 0x95 },
{ 0x00d6, 0x96 },
{ 0x00d7, 0x9e },
{ 0x00d8, 0xe9 },
{ 0x00d9, 0x97 },
{ 0x00da, 0x98 },
{ 0x00db, 0x99 },
{ 0x00dc, 0x9a },
{ 0x00dd, 0x9b },
{ 0x00de, 0x9c },
{ 0x00df, 0xfb },
{ 0x00e0, 0xd5 },
{ 0x00e1, 0xd6 },
{ 0x00e2, 0xd7 },
{ 0x00e3, 0xd8 },
{ 0x00e4, 0xd9 },
{ 0x00e5, 0xda },
{ 0x00e6, 0xf1 },
{ 0x00e7, 0xdb },
{ 0x00e8, 0xdc },
{ 0x00e9, 0xdd },
{ 0x00ea, 0xde },
{ 0x00eb, 0xdf },
{ 0x00ec, 0xe0 },
{ 0x00ed, 0xe2 },
{ 0x00ee, 0xe4 },
{ 0x00ef, 0xe5 },
{ 0x00f0, 0xe6 },
{ 0x00f1, 0xe7 },
{ 0x00f2, 0xec },
{ 0x00f3, 0xed },
{ 0x00f4, 0xee },
{ 0x00f5, 0xef },
{ 0x00f6, 0xf0 },
{ 0x00f7, 0x9f },
{ 0x00f8, 0xf9 },
{ 0x00f9, 0xf2 },
{ 0x00fa, 0xf3 },
{ 0x00fb, 0xf4 },
{ 0x00fc, 0xf6 },
{ 0x00fd, 0xf7 },
{ 0x00fe, 0xfc },
{ 0x00ff, 0xfd },
{ 0x0131, 0xf5 },
{ 0x0141, 0xe8 },
{ 0x0142, 0xf8 },
{ 0x0152, 0xea },
{ 0x0153, 0xfa },
{ 0x0192, 0xa6 },
{ 0x02c6, 0xc3 },
{ 0x02c7, 0xcf },
{ 0x02cb, 0xc1 },
{ 0x02d8, 0xc6 },
{ 0x02d9, 0xc7 },
{ 0x02da, 0xca },
{ 0x02db, 0xce },
{ 0x02dc, 0xc4 },
{ 0x02dd, 0xcd },
{ 0x2013, 0xb1 },
{ 0x2014, 0xd0 },
{ 0x2019, 0xa9 },
{ 0x201a, 0xb8 },
{ 0x201c, 0xaa },
{ 0x201d, 0xba },
{ 0x201e, 0xb9 },
{ 0x2020, 0xb2 },
{ 0x2021, 0xb3 },
{ 0x2022, 0xb7 },
{ 0x2026, 0xbc },
{ 0x2030, 0xbd },
{ 0x2039, 0xac },
{ 0x203a, 0xad },
{ 0x2044, 0xa4 },
{ 0xfb01, 0xae },
{ 0xfb02, 0xaf },
{ 0xfffd, 0xff },
};
static bool __CFToNextStepLatin(uint32_t flags, UniChar character, uint8_t *byte) {
if (character < 0x80) {
*byte = (uint8_t)character;
return true;
} else {
return CFStringEncodingUnicodeTo8BitEncoding(nextstep_from_tab, NUM_NEXTSTEP_FROM_UNI, character, byte);
}
};
static const UniChar NSToPrecompUnicodeTable[128] = {
/* NextStep Encoding Unicode */
/* 128 figspace */ 0x00a0, /* 0x2007 is fig space */
/* 129 Agrave */ 0x00c0,
/* 130 Aacute */ 0x00c1,
/* 131 Acircumflex */ 0x00c2,
/* 132 Atilde */ 0x00c3,
/* 133 Adieresis */ 0x00c4,
/* 134 Aring */ 0x00c5,
/* 135 Ccedilla */ 0x00c7,
/* 136 Egrave */ 0x00c8,
/* 137 Eacute */ 0x00c9,
/* 138 Ecircumflex */ 0x00ca,
/* 139 Edieresis */ 0x00cb,
/* 140 Igrave */ 0x00cc,
/* 141 Iacute */ 0x00cd,
/* 142 Icircumflex */ 0x00ce,
/* 143 Idieresis */ 0x00cf,
/* 144 Eth */ 0x00d0,
/* 145 Ntilde */ 0x00d1,
/* 146 Ograve */ 0x00d2,
/* 147 Oacute */ 0x00d3,
/* 148 Ocircumflex */ 0x00d4,
/* 149 Otilde */ 0x00d5,
/* 150 Odieresis */ 0x00d6,
/* 151 Ugrave */ 0x00d9,
/* 152 Uacute */ 0x00da,
/* 153 Ucircumflex */ 0x00db,
/* 154 Udieresis */ 0x00dc,
/* 155 Yacute */ 0x00dd,
/* 156 Thorn */ 0x00de,
/* 157 mu */ 0x00b5,
/* 158 multiply */ 0x00d7,
/* 159 divide */ 0x00f7,
/* 160 copyright */ 0x00a9,
/* 161 exclamdown */ 0x00a1,
/* 162 cent */ 0x00a2,
/* 163 sterling */ 0x00a3,
/* 164 fraction */ 0x2044,
/* 165 yen */ 0x00a5,
/* 166 florin */ 0x0192,
/* 167 section */ 0x00a7,
/* 168 currency */ 0x00a4,
/* 169 quotesingle */ 0x2019,
/* 170 quotedblleft */ 0x201c,
/* 171 guillemotleft */ 0x00ab,
/* 172 guilsinglleft */ 0x2039,
/* 173 guilsinglright */ 0x203a,
/* 174 fi */ 0xFB01,
/* 175 fl */ 0xFB02,
/* 176 registered */ 0x00ae,
/* 177 endash */ 0x2013,
/* 178 dagger */ 0x2020,
/* 179 daggerdbl */ 0x2021,
/* 180 periodcentered */ 0x00b7,
/* 181 brokenbar */ 0x00a6,
/* 182 paragraph */ 0x00b6,
/* 183 bullet */ 0x2022,
/* 184 quotesinglbase */ 0x201a,
/* 185 quotedblbase */ 0x201e,
/* 186 quotedblright */ 0x201d,
/* 187 guillemotright */ 0x00bb,
/* 188 ellipsis */ 0x2026,
/* 189 perthousand */ 0x2030,
/* 190 logicalnot */ 0x00ac,
/* 191 questiondown */ 0x00bf,
/* 192 onesuperior */ 0x00b9,
/* 193 grave */ 0x02cb,
/* 194 acute */ 0x00b4,
/* 195 circumflex */ 0x02c6,
/* 196 tilde */ 0x02dc,
/* 197 macron */ 0x00af,
/* 198 breve */ 0x02d8,
/* 199 dotaccent */ 0x02d9,
/* 200 dieresis */ 0x00a8,
/* 201 twosuperior */ 0x00b2,
/* 202 ring */ 0x02da,
/* 203 cedilla */ 0x00b8,
/* 204 threesuperior */ 0x00b3,
/* 205 hungarumlaut */ 0x02dd,
/* 206 ogonek */ 0x02db,
/* 207 caron */ 0x02c7,
/* 208 emdash */ 0x2014,
/* 209 plusminus */ 0x00b1,
/* 210 onequarter */ 0x00bc,
/* 211 onehalf */ 0x00bd,
/* 212 threequarters */ 0x00be,
/* 213 agrave */ 0x00e0,
/* 214 aacute */ 0x00e1,
/* 215 acircumflex */ 0x00e2,
/* 216 atilde */ 0x00e3,
/* 217 adieresis */ 0x00e4,
/* 218 aring */ 0x00e5,
/* 219 ccedilla */ 0x00e7,
/* 220 egrave */ 0x00e8,
/* 221 eacute */ 0x00e9,
/* 222 ecircumflex */ 0x00ea,
/* 223 edieresis */ 0x00eb,
/* 224 igrave */ 0x00ec,
/* 225 AE */ 0x00c6,
/* 226 iacute */ 0x00ed,
/* 227 ordfeminine */ 0x00aa,
/* 228 icircumflex */ 0x00ee,
/* 229 idieresis */ 0x00ef,
/* 230 eth */ 0x00f0,
/* 231 ntilde */ 0x00f1,
/* 232 Lslash */ 0x0141,
/* 233 Oslash */ 0x00d8,
/* 234 OE */ 0x0152,
/* 235 ordmasculine */ 0x00ba,
/* 236 ograve */ 0x00f2,
/* 237 oacute */ 0x00f3,
/* 238 ocircumflex */ 0x00f4,
/* 239 otilde */ 0x00f5,
/* 240 odieresis */ 0x00f6,
/* 241 ae */ 0x00e6,
/* 242 ugrave */ 0x00f9,
/* 243 uacute */ 0x00fa,
/* 244 ucircumflex */ 0x00fb,
/* 245 dotlessi */ 0x0131,
/* 246 udieresis */ 0x00fc,
/* 247 yacute */ 0x00fd,
/* 248 lslash */ 0x0142,
/* 249 oslash */ 0x00f8,
/* 250 oe */ 0x0153,
/* 251 germandbls */ 0x00df,
/* 252 thorn */ 0x00fe,
/* 253 ydieresis */ 0x00ff,
/* 254 .notdef */ 0xFFFD,
/* 255 .notdef */ 0xFFFD
};
static bool __CFFromNextStepLatin(uint32_t flags, uint8_t byte, UniChar *character) {
return ((*character = (byte < 0x80 ? (UniChar)byte : NSToPrecompUnicodeTable[byte - 0x80])) != 0xFFFD);
}
static CFIndex __CFToNextStepLatinPrecompose(uint32_t flags, const UniChar *character, CFIndex numChars, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
uint8_t byte;
CFIndex usedCharLen = 0;
if (__CFToNextStepLatin(flags, CFStringEncodingPrecomposeLatinCharacter(character, numChars, &usedCharLen), &byte) && byte && (usedCharLen > 1)) {
if (maxByteLen) *bytes = byte;
*usedByteLen = 1;
return usedCharLen;
} else {
return 0;
}
}
const CFStringEncodingConverter __CFConverterNextStepLatin = {
.encodingClass = kCFStringEncodingConverterCheapEightBit,
.toBytes.cheapEightBit = __CFToNextStepLatin,
.toUnicode.cheapEightBit = __CFFromNextStepLatin,
.maxBytesPerChar = 1,
.maxDecomposedCharLen = 1,
.toBytesLen = NULL,
.toUnicodeLen = NULL,
.toBytesFallback = NULL,
.toUnicodeFallback = NULL,
.toBytesPrecompose = __CFToNextStepLatinPrecompose,
.isValidCombiningChar = CFStringEncodingIsValidCombiningCharacterForLatin1,
};
/* UTF8 */
/*
* Copyright 2001 Unicode, Inc.
*
* Disclaimer
*
* This source code is provided as is by Unicode, Inc. No claims are
* made as to fitness for any particular purpose. No warranties of any
* kind are expressed or implied. The recipient agrees to determine
* applicability of information provided. If this file has been
* purchased on magnetic or optical media from Unicode, Inc., the
* sole remedy for any claim will be exchange of defective media
* within 90 days of receipt.
*
* Limitations on Rights to Redistribute This Code
*
* Unicode, Inc. hereby grants the right to freely use the information
* supplied in this file in the creation of products supporting the
* Unicode Standard, and to make copies of this file in any form
* for internal or external distribution as long as this notice
* remains attached.
*/
static const uint32_t kReplacementCharacter = 0x0000FFFDUL;
static const uint32_t kMaximumUCS2 = 0x0000FFFFUL;
static const uint32_t kMaximumUTF16 = 0x0010FFFFUL;
static const uint32_t kMaximumUCS4 = 0x7FFFFFFFUL;
static const int halfShift = 10;
static const uint32_t halfBase = 0x0010000UL;
static const uint32_t halfMask = 0x3FFUL;
static const uint32_t kSurrogateHighStart = 0xD800UL;
static const uint32_t kSurrogateHighEnd = 0xDBFFUL;
static const uint32_t kSurrogateLowStart = 0xDC00UL;
static const uint32_t kSurrogateLowEnd = 0xDFFFUL;
/*
* Index into the table below with the first byte of a UTF-8 sequence to
* get the number of trailing bytes that are supposed to follow it.
*/
static const char trailingBytesForUTF8[256] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
};
/*
* Magic values subtracted from a buffer value during UTF8 conversion.
* This table contains as many values as there might be trailing bytes
* in a UTF-8 sequence.
*/
static const UTF32Char offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL };
static const uint8_t firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
/* This code is similar in effect to making successive calls on the mbtowc and wctomb routines in FSS-UTF. However, it is considerably different in code:
* it is adapted to be consistent with UTF16,
* constants have been gathered.
* loops & conditionals have been removed as much as possible for
* efficiency, in favor of drop-through switch statements.
*/
CF_INLINE uint16_t __CFUTF8BytesToWriteForCharacter(uint32_t ch) {
if (ch < 0x80) return 1;
else if (ch < 0x800) return 2;
else if (ch < 0x10000) return 3;
else if (ch < 0x200000) return 4;
else if (ch < 0x4000000) return 5;
else if (ch <= kMaximumUCS4) return 6;
else return 0;
}
CF_INLINE uint16_t __CFToUTF8Core(uint32_t ch, uint8_t *bytes, uint32_t maxByteLen) {
uint16_t bytesToWrite = __CFUTF8BytesToWriteForCharacter(ch);
const uint32_t byteMask = 0xBF;
const uint32_t byteMark = 0x80;
if (!bytesToWrite) {
bytesToWrite = 2;
ch = kReplacementCharacter;
}
if (maxByteLen < bytesToWrite) return 0;
switch (bytesToWrite) { /* note: code falls through cases! */
case 6: bytes[5] = (ch | byteMark) & byteMask; ch >>= 6;
case 5: bytes[4] = (ch | byteMark) & byteMask; ch >>= 6;
case 4: bytes[3] = (ch | byteMark) & byteMask; ch >>= 6;
case 3: bytes[2] = (ch | byteMark) & byteMask; ch >>= 6;
case 2: bytes[1] = (ch | byteMark) & byteMask; ch >>= 6;
case 1: bytes[0] = ch | firstByteMark[bytesToWrite];
}
return bytesToWrite;
}
static CFIndex __CFToUTF8(uint32_t flags, const UniChar *characters, CFIndex numChars, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
uint16_t bytesWritten;
uint32_t ch;
const UniChar *beginCharacter = characters;
const UniChar *endCharacter = characters + numChars;
const uint8_t *beginBytes = bytes;
const uint8_t *endBytes = bytes + maxByteLen;
bool isStrict = (flags & kCFStringEncodingUseHFSPlusCanonical ? false : true);
while ((characters < endCharacter) && (!maxByteLen || (bytes < endBytes))) {
ch = *(characters++);
if (ch < 0x80) { // ASCII
if (maxByteLen) *bytes = ch;
++bytes;
} else {
if (ch >= kSurrogateHighStart) {
if (ch <= kSurrogateHighEnd) {
if ((characters < endCharacter) && ((*characters >= kSurrogateLowStart) && (*characters <= kSurrogateLowEnd))) {
ch = ((ch - kSurrogateHighStart) << halfShift) + (*(characters++) - kSurrogateLowStart) + halfBase;
} else if (isStrict) {
--characters;
break;
}
} else if (isStrict && (ch <= kSurrogateLowEnd)) {
--characters;
break;
}
}
if (!(bytesWritten = (maxByteLen ? __CFToUTF8Core(ch, bytes, endBytes - bytes) : __CFUTF8BytesToWriteForCharacter(ch)))) {
characters -= (ch < 0x10000 ? 1 : 2);
break;
}
bytes += bytesWritten;
}
}
if (usedByteLen) *usedByteLen = bytes - beginBytes;
return characters - beginCharacter;
}