The Tor Browser / file comparison
comparison: intl/uconv/util/nsUnicodeEncodeHelper.cpp
intl/uconv/util/nsUnicodeEncodeHelper.cpp
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:05cc44680543 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "unicpriv.h" | |
| 7 #include "nsUnicodeEncodeHelper.h" | |
| 8 #include "nsDebug.h" | |
| 9 | |
| 10 //---------------------------------------------------------------------- | |
| 11 // Class nsUnicodeEncodeHelper [implementation] | |
| 12 nsresult nsUnicodeEncodeHelper::ConvertByTable( | |
| 13 const char16_t * aSrc, | |
| 14 int32_t * aSrcLength, | |
| 15 char * aDest, | |
| 16 int32_t * aDestLength, | |
| 17 uScanClassID aScanClass, | |
| 18 uShiftOutTable * aShiftOutTable, | |
| 19 uMappingTable * aMappingTable) | |
| 20 { | |
| 21 const char16_t * src = aSrc; | |
| 22 const char16_t * srcEnd = aSrc + *aSrcLength; | |
| 23 char * dest = aDest; | |
| 24 int32_t destLen = *aDestLength; | |
| 25 | |
| 26 char16_t med; | |
| 27 int32_t bcw; // byte count for write; | |
| 28 nsresult res = NS_OK; | |
| 29 | |
| 30 while (src < srcEnd) { | |
| 31 if (!uMapCode((uTable*) aMappingTable, static_cast<char16_t>(*(src++)), reinterpret_cast<uint16_t*>(&med))) { | |
| 32 if (aScanClass == u1ByteCharset && *(src - 1) < 0x20) { | |
| 33 // some tables are missing the 0x00 - 0x20 part | |
| 34 med = *(src - 1); | |
| 35 } else { | |
| 36 res = NS_ERROR_UENC_NOMAPPING; | |
| 37 break; | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 bool charFound; | |
| 42 if (aScanClass == uMultibytesCharset) { | |
| 43 NS_ASSERTION(aShiftOutTable, "shift table missing"); | |
| 44 charFound = uGenerateShift(aShiftOutTable, 0, med, | |
| 45 (uint8_t *)dest, destLen, | |
| 46 (uint32_t *)&bcw); | |
| 47 } else { | |
| 48 charFound = uGenerate(aScanClass, 0, med, | |
| 49 (uint8_t *)dest, destLen, | |
| 50 (uint32_t *)&bcw); | |
| 51 } | |
| 52 if (!charFound) { | |
| 53 src--; | |
| 54 res = NS_OK_UENC_MOREOUTPUT; | |
| 55 break; | |
| 56 } | |
| 57 | |
| 58 dest += bcw; | |
| 59 destLen -= bcw; | |
| 60 } | |
| 61 | |
| 62 *aSrcLength = src - aSrc; | |
| 63 *aDestLength = dest - aDest; | |
| 64 return res; | |
| 65 } | |
| 66 | |
| 67 nsresult nsUnicodeEncodeHelper::ConvertByMultiTable( | |
| 68 const char16_t * aSrc, | |
| 69 int32_t * aSrcLength, | |
| 70 char * aDest, | |
| 71 int32_t * aDestLength, | |
| 72 int32_t aTableCount, | |
| 73 uScanClassID * aScanClassArray, | |
| 74 uShiftOutTable ** aShiftOutTable, | |
| 75 uMappingTable ** aMappingTable) | |
| 76 { | |
| 77 const char16_t * src = aSrc; | |
| 78 const char16_t * srcEnd = aSrc + *aSrcLength; | |
| 79 char * dest = aDest; | |
| 80 int32_t destLen = *aDestLength; | |
| 81 | |
| 82 char16_t med; | |
| 83 int32_t bcw; // byte count for write; | |
| 84 nsresult res = NS_OK; | |
| 85 int32_t i; | |
| 86 | |
| 87 while (src < srcEnd) { | |
| 88 for (i=0; i<aTableCount; i++) | |
| 89 if (uMapCode((uTable*) aMappingTable[i], static_cast<uint16_t>(*src), reinterpret_cast<uint16_t*>(&med))) break; | |
| 90 | |
| 91 src++; | |
| 92 if (i == aTableCount) { | |
| 93 res = NS_ERROR_UENC_NOMAPPING; | |
| 94 break; | |
| 95 } | |
| 96 | |
| 97 bool charFound; | |
| 98 if (aScanClassArray[i] == uMultibytesCharset) { | |
| 99 NS_ASSERTION(aShiftOutTable[i], "shift table missing"); | |
| 100 charFound = uGenerateShift(aShiftOutTable[i], 0, med, | |
| 101 (uint8_t *)dest, destLen, | |
| 102 (uint32_t *)&bcw); | |
| 103 } | |
| 104 else | |
| 105 charFound = uGenerate(aScanClassArray[i], 0, med, | |
| 106 (uint8_t *)dest, destLen, | |
| 107 (uint32_t *)&bcw); | |
| 108 if (!charFound) { | |
| 109 src--; | |
| 110 res = NS_OK_UENC_MOREOUTPUT; | |
| 111 break; | |
| 112 } | |
| 113 | |
| 114 dest += bcw; | |
| 115 destLen -= bcw; | |
| 116 } | |
| 117 | |
| 118 *aSrcLength = src - aSrc; | |
| 119 *aDestLength = dest - aDest; | |
| 120 return res; | |
| 121 } |
