The Tor Browser: intl/icu/source/common/ucol_swp.cpp@6474c204b198 (annotated)

intl/icu/source/common/ucol_swp.cpp@6474c204b198 (annotated)

intl/icu/source/common/ucol_swp.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
 *******************************************************************************
 *
 *   Copyright (C) 2003-2012, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  ucol_swp.cpp
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   created on: 2003sep10
 *   created by: Markus W. Scherer
 *
 *   Swap collation binaries.
 */
 #include "unicode/udata.h" /* UDataInfo */
 #include "utrie.h"
 #include "udataswp.h"
 #include "cmemory.h"
 #include "ucol_data.h"
 #include "ucol_swp.h"
 /* swapping ----------------------------------------------------------------- */
 /*
  * This performs data swapping for a folded trie (see utrie.c for details).
  */
 U_CAPI int32_t U_EXPORT2
 utrie_swap(const UDataSwapper *ds,
            const void *inData, int32_t length, void *outData,
            UErrorCode *pErrorCode) {
     const UTrieHeader *inTrie;
     UTrieHeader trie;
     int32_t size;
     UBool dataIs32;
     if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
         return 0;
     }
     if(ds==NULL || inData==NULL || (length>=0 && outData==NULL)) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return 0;
     }
     /* setup and swapping */
     if(length>=0 && (uint32_t)length<sizeof(UTrieHeader)) {
         *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
         return 0;
     }
     inTrie=(const UTrieHeader *)inData;
     trie.signature=ds->readUInt32(inTrie->signature);
     trie.options=ds->readUInt32(inTrie->options);
     trie.indexLength=udata_readInt32(ds, inTrie->indexLength);
     trie.dataLength=udata_readInt32(ds, inTrie->dataLength);
     if( trie.signature!=0x54726965 ||
         (trie.options&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_SHIFT ||
         ((trie.options>>UTRIE_OPTIONS_INDEX_SHIFT)&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_INDEX_SHIFT ||
         trie.indexLength<UTRIE_BMP_INDEX_LENGTH ||
         (trie.indexLength&(UTRIE_SURROGATE_BLOCK_COUNT-1))!=0 ||
         trie.dataLength<UTRIE_DATA_BLOCK_LENGTH ||
         (trie.dataLength&(UTRIE_DATA_GRANULARITY-1))!=0 ||
         ((trie.options&UTRIE_OPTIONS_LATIN1_IS_LINEAR)!=0 && trie.dataLength<(UTRIE_DATA_BLOCK_LENGTH+0x100))
     ) {
         *pErrorCode=U_INVALID_FORMAT_ERROR; /* not a UTrie */
         return 0;
     }
     dataIs32=(UBool)((trie.options&UTRIE_OPTIONS_DATA_IS_32_BIT)!=0);
     size=sizeof(UTrieHeader)+trie.indexLength*2+trie.dataLength*(dataIs32?4:2);
     if(length>=0) {
         UTrieHeader *outTrie;
         if(length<size) {
             *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
             return 0;
         }
         outTrie=(UTrieHeader *)outData;
         /* swap the header */
         ds->swapArray32(ds, inTrie, sizeof(UTrieHeader), outTrie, pErrorCode);
         /* swap the index and the data */
         if(dataIs32) {
             ds->swapArray16(ds, inTrie+1, trie.indexLength*2, outTrie+1, pErrorCode);
             ds->swapArray32(ds, (const uint16_t *)(inTrie+1)+trie.indexLength, trie.dataLength*4,
                                      (uint16_t *)(outTrie+1)+trie.indexLength, pErrorCode);
         } else {
             ds->swapArray16(ds, inTrie+1, (trie.indexLength+trie.dataLength)*2, outTrie+1, pErrorCode);
         }
     }
     return size;
 }
 #if !UCONFIG_NO_COLLATION
 /* Modified copy of the beginning of ucol_swapBinary(). */
 U_CAPI UBool U_EXPORT2
 ucol_looksLikeCollationBinary(const UDataSwapper *ds,
                               const void *inData, int32_t length) {
     const UCATableHeader *inHeader;
     UCATableHeader header;
     if(ds==NULL || inData==NULL || length<-1) {
         return FALSE;
     }
     inHeader=(const UCATableHeader *)inData;
     /*
      * The collation binary must contain at least the UCATableHeader,
      * starting with its size field.
      * sizeof(UCATableHeader)==42*4 in ICU 2.8
      * check the length against the header size before reading the size field
      */
     uprv_memset(&header, 0, sizeof(header));
     if(length<0) {
         header.size=udata_readInt32(ds, inHeader->size);
     } else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
         return FALSE;
     }
     header.magic=ds->readUInt32(inHeader->magic);
     if(!(
         header.magic==UCOL_HEADER_MAGIC &&
         inHeader->formatVersion[0]==3 /*&&
         inHeader->formatVersion[1]>=0*/
     )) {
         return FALSE;
     }
     if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
         return FALSE;
     }
     return TRUE;
 }
 /* swap a header-less collation binary, inside a resource bundle or ucadata.icu */
 U_CAPI int32_t U_EXPORT2
 ucol_swapBinary(const UDataSwapper *ds,
                 const void *inData, int32_t length, void *outData,
                 UErrorCode *pErrorCode) {
     const uint8_t *inBytes;
     uint8_t *outBytes;
     const UCATableHeader *inHeader;
     UCATableHeader *outHeader;
     UCATableHeader header;
     uint32_t count;
     /* argument checking in case we were not called from ucol_swap() */
     if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
         return 0;
     }
     if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) {
         *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
         return 0;
     }
     inBytes=(const uint8_t *)inData;
     outBytes=(uint8_t *)outData;
     inHeader=(const UCATableHeader *)inData;
     outHeader=(UCATableHeader *)outData;
     /*
      * The collation binary must contain at least the UCATableHeader,
      * starting with its size field.
      * sizeof(UCATableHeader)==42*4 in ICU 2.8
      * check the length against the header size before reading the size field
      */
     uprv_memset(&header, 0, sizeof(header));
     if(length<0) {
         header.size=udata_readInt32(ds, inHeader->size);
     } else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
         udata_printError(ds, "ucol_swapBinary(): too few bytes (%d after header) for collation data\n",
                          length);
         *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
         return 0;
     }
     header.magic=ds->readUInt32(inHeader->magic);
     if(!(
         header.magic==UCOL_HEADER_MAGIC &&
         inHeader->formatVersion[0]==3 /*&&
         inHeader->formatVersion[1]>=0*/
     )) {
         udata_printError(ds, "ucol_swapBinary(): magic 0x%08x or format version %02x.%02x is not a collation binary\n",
                          header.magic,
                          inHeader->formatVersion[0], inHeader->formatVersion[1]);
         *pErrorCode=U_UNSUPPORTED_ERROR;
         return 0;
     }
     if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
         udata_printError(ds, "ucol_swapBinary(): endianness %d or charset %d does not match the swapper\n",
                          inHeader->isBigEndian, inHeader->charSetFamily);
         *pErrorCode=U_INVALID_FORMAT_ERROR;
         return 0;
     }
     if(length>=0) {
         /* copy everything, takes care of data that needs no swapping */
         if(inBytes!=outBytes) {
             uprv_memcpy(outBytes, inBytes, header.size);
         }
         /* swap the necessary pieces in the order of their occurrence in the data */
         /* read more of the UCATableHeader (the size field was read above) */
         header.options=                 ds->readUInt32(inHeader->options);
         header.UCAConsts=               ds->readUInt32(inHeader->UCAConsts);
         header.contractionUCACombos=    ds->readUInt32(inHeader->contractionUCACombos);
         header.mappingPosition=         ds->readUInt32(inHeader->mappingPosition);
         header.expansion=               ds->readUInt32(inHeader->expansion);
         header.contractionIndex=        ds->readUInt32(inHeader->contractionIndex);
         header.contractionCEs=          ds->readUInt32(inHeader->contractionCEs);
         header.contractionSize=         ds->readUInt32(inHeader->contractionSize);
         header.endExpansionCE=          ds->readUInt32(inHeader->endExpansionCE);
         header.expansionCESize=         ds->readUInt32(inHeader->expansionCESize);
         header.endExpansionCECount=     udata_readInt32(ds, inHeader->endExpansionCECount);
         header.contractionUCACombosSize=udata_readInt32(ds, inHeader->contractionUCACombosSize);
         header.scriptToLeadByte=        ds->readUInt32(inHeader->scriptToLeadByte);
         header.leadByteToScript=        ds->readUInt32(inHeader->leadByteToScript);
         /* swap the 32-bit integers in the header */
         ds->swapArray32(ds, inHeader, (int32_t)((const char *)&inHeader->jamoSpecial-(const char *)inHeader),
                            outHeader, pErrorCode);
         ds->swapArray32(ds, &(inHeader->scriptToLeadByte), sizeof(header.scriptToLeadByte) + sizeof(header.leadByteToScript),
                            &(outHeader->scriptToLeadByte), pErrorCode);
         /* set the output platform properties */
         outHeader->isBigEndian=ds->outIsBigEndian;
         outHeader->charSetFamily=ds->outCharset;
         /* swap the options */
         if(header.options!=0) {
             ds->swapArray32(ds, inBytes+header.options, header.expansion-header.options,
                                outBytes+header.options, pErrorCode);
         }
         /* swap the expansions */
         if(header.mappingPosition!=0 && header.expansion!=0) {
             if(header.contractionIndex!=0) {
                 /* expansions bounded by contractions */
                 count=header.contractionIndex-header.expansion;
             } else {
                 /* no contractions: expansions bounded by the main trie */
                 count=header.mappingPosition-header.expansion;
             }
             ds->swapArray32(ds, inBytes+header.expansion, (int32_t)count,
                                outBytes+header.expansion, pErrorCode);
         }
         /* swap the contractions */
         if(header.contractionSize!=0) {
             /* contractionIndex: UChar[] */
             ds->swapArray16(ds, inBytes+header.contractionIndex, header.contractionSize*2,
                                outBytes+header.contractionIndex, pErrorCode);
             /* contractionCEs: CEs[] */
             ds->swapArray32(ds, inBytes+header.contractionCEs, header.contractionSize*4,
                                outBytes+header.contractionCEs, pErrorCode);
         }
         /* swap the main trie */
         if(header.mappingPosition!=0) {
             count=header.endExpansionCE-header.mappingPosition;
             utrie_swap(ds, inBytes+header.mappingPosition, (int32_t)count,
                           outBytes+header.mappingPosition, pErrorCode);
         }
         /* swap the max expansion table */
         if(header.endExpansionCECount!=0) {
             ds->swapArray32(ds, inBytes+header.endExpansionCE, header.endExpansionCECount*4,
                                outBytes+header.endExpansionCE, pErrorCode);
         }
         /* expansionCESize, unsafeCP, contrEndCP: uint8_t[], no need to swap */
         /* swap UCA constants */
         if(header.UCAConsts!=0) {
             /*
              * if UCAConsts!=0 then contractionUCACombos because we are swapping
              * the UCA data file, and we know that the UCA contains contractions
              */
             count=header.contractionUCACombos-header.UCAConsts;
             ds->swapArray32(ds, inBytes+header.UCAConsts, header.contractionUCACombos-header.UCAConsts,
                                outBytes+header.UCAConsts, pErrorCode);
         }
         /* swap UCA contractions */
         if(header.contractionUCACombosSize!=0) {
             count=header.contractionUCACombosSize*inHeader->contractionUCACombosWidth*U_SIZEOF_UCHAR;
             ds->swapArray16(ds, inBytes+header.contractionUCACombos, (int32_t)count,
                                outBytes+header.contractionUCACombos, pErrorCode);
         }
         /* swap the script to lead bytes */
         if(header.scriptToLeadByte!=0) {
             int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte))); // each entry = 2 * uint16
             int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte + 2))); // each entry = uint16
             ds->swapArray16(ds, inBytes+header.scriptToLeadByte,
 + (4 * indexCount) + (2 * dataCount),
                                 outBytes+header.scriptToLeadByte, pErrorCode);
         }
         /* swap the lead byte to scripts */
         if(header.leadByteToScript!=0) {
             int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript))); // each entry = uint16
             int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript + 2))); // each entry = uint16
             ds->swapArray16(ds, inBytes+header.leadByteToScript,
 + (2 * indexCount) + (2 * dataCount),
                                 outBytes+header.leadByteToScript, pErrorCode);
         }
     }
     return header.size;
 }
 /* swap ICU collation data like ucadata.icu */
 U_CAPI int32_t U_EXPORT2
 ucol_swap(const UDataSwapper *ds,
           const void *inData, int32_t length, void *outData,
           UErrorCode *pErrorCode) {
     const UDataInfo *pInfo;
     int32_t headerSize, collationSize;
     /* udata_swapDataHeader checks the arguments */
     headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
     if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
         return 0;
     }
     /* check data format and format version */
     pInfo=(const UDataInfo *)((const char *)inData+4);
     if(!(
         pInfo->dataFormat[0]==0x55 &&   /* dataFormat="UCol" */
         pInfo->dataFormat[1]==0x43 &&
         pInfo->dataFormat[2]==0x6f &&
         pInfo->dataFormat[3]==0x6c &&
         pInfo->formatVersion[0]==3 /*&&
         pInfo->formatVersion[1]>=0*/
     )) {
         udata_printError(ds, "ucol_swap(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not a collation file\n",
                          pInfo->dataFormat[0], pInfo->dataFormat[1],
                          pInfo->dataFormat[2], pInfo->dataFormat[3],
                          pInfo->formatVersion[0], pInfo->formatVersion[1]);
         *pErrorCode=U_UNSUPPORTED_ERROR;
         return 0;
     }
     collationSize=ucol_swapBinary(ds,
                         (const char *)inData+headerSize,
                         length>=0 ? length-headerSize : -1,
                         (char *)outData+headerSize,
                         pErrorCode);
     if(U_SUCCESS(*pErrorCode)) {
         return headerSize+collationSize;
     } else {
         return 0;
     }
 }
 /* swap inverse UCA collation data (invuca.icu) */
 U_CAPI int32_t U_EXPORT2
 ucol_swapInverseUCA(const UDataSwapper *ds,
                     const void *inData, int32_t length, void *outData,
                     UErrorCode *pErrorCode) {
     const UDataInfo *pInfo;
     int32_t headerSize;
     const uint8_t *inBytes;
     uint8_t *outBytes;
     const InverseUCATableHeader *inHeader;
     InverseUCATableHeader *outHeader;
     InverseUCATableHeader header={ 0,0,0,0,0,{0,0,0,0},{0,0,0,0,0,0,0,0} };
     /* udata_swapDataHeader checks the arguments */
     headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
     if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
         return 0;
     }
     /* check data format and format version */
     pInfo=(const UDataInfo *)((const char *)inData+4);
     if(!(
         pInfo->dataFormat[0]==0x49 &&   /* dataFormat="InvC" */
         pInfo->dataFormat[1]==0x6e &&
         pInfo->dataFormat[2]==0x76 &&
         pInfo->dataFormat[3]==0x43 &&
         pInfo->formatVersion[0]==2 &&
         pInfo->formatVersion[1]>=1
     )) {
         udata_printError(ds, "ucol_swapInverseUCA(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not an inverse UCA collation file\n",
                          pInfo->dataFormat[0], pInfo->dataFormat[1],
                          pInfo->dataFormat[2], pInfo->dataFormat[3],
                          pInfo->formatVersion[0], pInfo->formatVersion[1]);
         *pErrorCode=U_UNSUPPORTED_ERROR;
         return 0;
     }
     inBytes=(const uint8_t *)inData+headerSize;
     outBytes=(uint8_t *)outData+headerSize;
     inHeader=(const InverseUCATableHeader *)inBytes;
     outHeader=(InverseUCATableHeader *)outBytes;
     /*
      * The inverse UCA collation binary must contain at least the InverseUCATableHeader,
      * starting with its size field.
      * sizeof(UCATableHeader)==8*4 in ICU 2.8
      * check the length against the header size before reading the size field
      */
     if(length<0) {
         header.byteSize=udata_readInt32(ds, inHeader->byteSize);
     } else if(
         ((length-headerSize)<(8*4) ||
          (uint32_t)(length-headerSize)<(header.byteSize=udata_readInt32(ds, inHeader->byteSize)))
     ) {
         udata_printError(ds, "ucol_swapInverseUCA(): too few bytes (%d after header) for inverse UCA collation data\n",
                          length);
         *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
         return 0;
     }
     if(length>=0) {
         /* copy everything, takes care of data that needs no swapping */
         if(inBytes!=outBytes) {
             uprv_memcpy(outBytes, inBytes, header.byteSize);
         }
         /* swap the necessary pieces in the order of their occurrence in the data */
         /* read more of the InverseUCATableHeader (the byteSize field was read above) */
         header.tableSize=   ds->readUInt32(inHeader->tableSize);
         header.contsSize=   ds->readUInt32(inHeader->contsSize);
         header.table=       ds->readUInt32(inHeader->table);
         header.conts=       ds->readUInt32(inHeader->conts);
         /* swap the 32-bit integers in the header */
         ds->swapArray32(ds, inHeader, 5*4, outHeader, pErrorCode);
         /* swap the inverse table; tableSize counts uint32_t[3] rows */
         ds->swapArray32(ds, inBytes+header.table, header.tableSize*3*4,
                            outBytes+header.table, pErrorCode);
         /* swap the continuation table; contsSize counts UChars */
         ds->swapArray16(ds, inBytes+header.conts, header.contsSize*U_SIZEOF_UCHAR,
                            outBytes+header.conts, pErrorCode);
     }
     return headerSize+header.byteSize;
 }
 #endif /* #if !UCONFIG_NO_COLLATION */

The Tor Browser / annotate

intl/icu/source/common/ucol_swp.cpp@6474c204b198 (annotated)

intl/icu/source/common/ucol_swp.cpp