1076 lines
33 KiB
C
1076 lines
33 KiB
C
/*
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**********************************************************************
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* Copyright (C) 2000, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* file name: ucnv_utf.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2000feb03
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* created by: Markus W. Scherer
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*
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* Change history:
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*
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* 06/29/2000 helena Major rewrite of the callback APIs.
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*/
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#include "unicode/utypes.h"
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#include "ucmp16.h"
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#include "ucmp8.h"
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#include "unicode/ucnv_err.h"
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#include "ucnv_bld.h"
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#include "unicode/ucnv.h"
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#include "ucnv_cnv.h"
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/* UTF-8 -------------------------------------------------------------------- */
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/* UTF-8 Conversion DATA
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* for more information see Unicode Strandard 2.0 , Transformation Formats Appendix A-9
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*/
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const uint32_t kReplacementCharacter = 0x0000FFFD;
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const uint32_t kMaximumUCS2 = 0x0000FFFF;
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const uint32_t kMaximumUTF16 = 0x0010FFFF;
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const uint32_t kMaximumUCS4 = 0x7FFFFFFF;
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const int8_t halfShift = 10;
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const uint32_t halfBase = 0x0010000;
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const uint32_t halfMask = 0x3FF;
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const uint32_t kSurrogateHighStart = 0xD800;
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const uint32_t kSurrogateHighEnd = 0xDBFF;
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const uint32_t kSurrogateLowStart = 0xDC00;
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const uint32_t kSurrogateLowEnd = 0xDFFF;
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const uint32_t offsetsFromUTF8[7] = {0,
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(uint32_t) 0x00000000, (uint32_t) 0x00003080, (uint32_t) 0x000E2080,
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(uint32_t) 0x03C82080, (uint32_t) 0xFA082080, (uint32_t) 0x82082080
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};
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/* END OF UTF-8 Conversion DATA */
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const int8_t bytesFromUTF8[256] = {
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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,
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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,
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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,
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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,
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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,
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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,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 0, 0
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};
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const unsigned char firstByteMark[7] = {0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC};
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void T_UConverter_toUnicode_UTF8 (UConverterToUnicodeArgs * args,
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UErrorCode * err)
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{
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const unsigned char *mySource = (unsigned char *) args->source;
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UChar *myTarget = args->target;
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int32_t mySourceIndex = 0;
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int32_t myTargetIndex = 0;
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int32_t targetLength = args->targetLimit - myTarget;
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int32_t sourceLength = args->sourceLimit - (char *) mySource;
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uint32_t ch = 0 ,
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ch2 =0 ,
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i =0; /* Index into the current # of bytes consumed in the current sequence */
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uint32_t inBytes = 0; /* Total number of bytes in the current UTF8 sequence */
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if (args->converter->toUnicodeStatus)
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{
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i = args->converter->invalidCharLength; /* restore # of bytes consumed */
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inBytes = args->converter->toUnicodeStatus; /* Restore size of current sequence */
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ch = args->converter->mode; /*Stores the previously calculated ch from a previous call*/
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args->converter->toUnicodeStatus = 0;
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args->converter->invalidCharLength = 0;
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goto morebytes;
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}
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while (mySourceIndex < sourceLength)
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{
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if (myTargetIndex < targetLength)
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{
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ch = 0;
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ch = ((uint32_t)mySource[mySourceIndex++]) & 0x000000FF;
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if (ch < 0x80) /* Simple case */
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{
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myTarget[myTargetIndex++] = (UChar) ch;
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}
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else
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{
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/* store the first char */
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inBytes = bytesFromUTF8[ch]; /* lookup current sequence length */
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args->converter->invalidCharBuffer[0] = (char)ch;
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i = 1;
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morebytes:
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for (; i < inBytes; i++)
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{
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{
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if (mySourceIndex >= sourceLength)
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{
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if (args->flush)
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{
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if (U_SUCCESS(*err))
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{
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*err = U_TRUNCATED_CHAR_FOUND;
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args->converter->toUnicodeStatus = 0x00;
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}
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}
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else
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{
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args->converter->toUnicodeStatus = inBytes;
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args->converter->invalidCharLength = (int8_t)i;
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}
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goto donefornow;
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}
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args->converter->invalidCharBuffer[i] = (char) (ch2 = (((uint32_t)mySource[mySourceIndex++]) & 0x000000FF));
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if ((ch2 & 0xC0) != 0x80) /* Invalid trailing byte */
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break;
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}
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ch <<= 6;
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ch += ch2;
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}
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ch -= offsetsFromUTF8[inBytes];
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if (i == inBytes && ch <= kMaximumUTF16)
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{
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if (ch <= kMaximumUCS2)
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{
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myTarget[myTargetIndex++] = (UChar) ch;
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}
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else
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{
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ch -= halfBase;
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myTarget[myTargetIndex++] = (UChar) ((ch >> halfShift) + kSurrogateHighStart);
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ch = (ch & halfMask) + kSurrogateLowStart;
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if (myTargetIndex < targetLength)
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{
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myTarget[myTargetIndex++] = (char)ch;
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}
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else
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{
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args->converter->invalidUCharBuffer[0] = (UChar) ch;
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args->converter->invalidUCharLength = 1;
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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}
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}
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}
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else
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{
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UChar* saveTarget = args->target;
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const char* saveSource = args->source;
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*err = U_ILLEGAL_CHAR_FOUND;
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args->converter->invalidCharLength = (int8_t)i;
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#ifdef Debug
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printf("inbytes %d\n, args->converter->invalidCharLength = %d,\n mySource[mySourceIndex]=%X\n", inBytes, args->converter->invalidCharLength, mySource[mySourceIndex]);
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#endif
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/* Needed explicit cast for mySource on MVS to make compiler happy - JJD */
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args->target = myTarget + myTargetIndex;
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args->source = (const char*) mySource + mySourceIndex;
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ToU_CALLBACK_MACRO(args->converter->toUContext,
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args,
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args->converter->invalidCharBuffer,
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args->converter->invalidCharLength,
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UCNV_UNASSIGNED,
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err);
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args->source = saveSource;
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args->target = saveTarget;
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if (U_FAILURE (*err)) break;
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args->converter->invalidCharLength = 0;
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}
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}
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}
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else
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/* End of target buffer */
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{
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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break;
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}
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}
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donefornow:
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args->target += myTargetIndex;
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args->source += mySourceIndex;
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args->converter->mode = ch; /*stores a partially calculated target*/
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}
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void T_UConverter_toUnicode_UTF8_OFFSETS_LOGIC (UConverterToUnicodeArgs * args,
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UErrorCode * err)
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{
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const unsigned char *mySource = (unsigned char *) args->source;
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UChar *myTarget = args->target;
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int32_t mySourceIndex = 0;
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int32_t myTargetIndex = 0;
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int32_t targetLength = args->targetLimit - myTarget;
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int32_t sourceLength = args->sourceLimit - (char *) mySource;
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uint32_t ch = 0, ch2 = 0, i = 0;
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uint32_t inBytes = 0;
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if (args->converter->toUnicodeStatus)
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{
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i = args->converter->invalidCharLength;
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inBytes = args->converter->toUnicodeStatus;
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args->converter->toUnicodeStatus = 0;
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ch = args->converter->mode;
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goto morebytes;
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}
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while (mySourceIndex < sourceLength)
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{
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if (myTargetIndex < targetLength)
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{
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ch = mySource[mySourceIndex++];
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if (ch < 0x80) /* Simple case */
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{
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args->offsets[myTargetIndex] = mySourceIndex-1;
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myTarget[myTargetIndex++] = (UChar) ch;
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}
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else
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{
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inBytes = bytesFromUTF8[ch];
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args->converter->invalidCharBuffer[0] = (char)ch;
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i = 1;
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morebytes:
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for (; i < inBytes; i++)
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{
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{
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if (mySourceIndex >= sourceLength)
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{
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if (args->flush)
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{
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if (U_SUCCESS(*err))
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{
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*err = U_TRUNCATED_CHAR_FOUND;
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args->converter->toUnicodeStatus = 0x00;
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}
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}
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else
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{
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args->converter->toUnicodeStatus = inBytes;
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args->converter->invalidCharLength = (int8_t)i;
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}
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goto donefornow;
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}
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args->converter->invalidCharBuffer[i] = (char) (ch2 = mySource[mySourceIndex++]);
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if ((ch2 & 0xC0) != 0x80) /* Invalid trailing byte */
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break;
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}
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ch <<= 6;
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ch += ch2;
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}
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ch -= offsetsFromUTF8[inBytes];
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if (i == inBytes && ch <= kMaximumUTF16)
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{
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if (ch <= kMaximumUCS2) {
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args->offsets[myTargetIndex] = mySourceIndex-3;
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myTarget[myTargetIndex++] = (UChar) ch;
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}
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else
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{
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ch -= halfBase;
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args->offsets[myTargetIndex] = mySourceIndex-4;
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myTarget[myTargetIndex++] = (UChar) ((ch >> halfShift) + kSurrogateHighStart);
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ch = (ch & halfMask) + kSurrogateLowStart;
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if (myTargetIndex < targetLength)
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{
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args->offsets[myTargetIndex] = mySourceIndex-4;
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myTarget[myTargetIndex++] = (char)ch;
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}
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else
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{
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args->converter->invalidUCharBuffer[0] = (UChar) ch;
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args->converter->invalidUCharLength = 1;
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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}
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}
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}
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else
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{
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int32_t currentOffset = args->offsets[myTargetIndex-1];
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int32_t My_i = myTargetIndex;
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UChar* saveTarget = args->target;
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const char* saveSource = args->source;
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int32_t* saveOffsets = args->offsets;
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*err = U_ILLEGAL_CHAR_FOUND;
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args->converter->invalidCharLength = (int8_t)i;
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args->target = myTarget + myTargetIndex;
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args->source = (const char*)mySource + mySourceIndex;
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args->offsets = args->offsets?args->offsets+myTargetIndex:0;
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/* To do HSYS: more smarts here, including offsets */
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ToU_CALLBACK_OFFSETS_LOGIC_MACRO(args->converter->toUContext,
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args,
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args->converter->invalidCharBuffer,
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args->converter->invalidCharLength,
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UCNV_UNASSIGNED,
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err);
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/* Needed explicit cast for mySource on MVS to make compiler happy - JJD */
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args->source = saveSource;
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args->target = saveTarget;
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if (U_FAILURE (*err)) break;
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args->converter->invalidCharLength = 0;
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}
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}
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}
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else
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/* End of target buffer */
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{
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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break;
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}
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}
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donefornow:
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args->target += myTargetIndex;
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args->source += mySourceIndex;
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args->converter->mode = ch;
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}
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void T_UConverter_fromUnicode_UTF8 (UConverterFromUnicodeArgs * args,
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UErrorCode * err)
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{
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const UChar *mySource = args->source;
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unsigned char *myTarget = (unsigned char *) args->target;
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int32_t mySourceIndex = 0;
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int32_t myTargetIndex = 0;
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int32_t targetLength = args->targetLimit - (char *) myTarget;
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int32_t sourceLength = args->sourceLimit - mySource;
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uint32_t ch;
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int16_t i, bytesToWrite = 0;
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uint32_t ch2;
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char temp[4];
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if (args->converter->fromUnicodeStatus)
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{
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ch = args->converter->fromUnicodeStatus;
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args->converter->fromUnicodeStatus = 0;
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goto lowsurogate;
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}
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while (mySourceIndex < sourceLength)
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{
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if (myTargetIndex < targetLength)
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{
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bytesToWrite = 0;
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ch = mySource[mySourceIndex++];
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if (ch < 0x80) /* Single byte */
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{
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myTarget[myTargetIndex++] = (char) ch;
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}
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else if (ch < 0x800) /* Double byte */
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{
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myTarget[myTargetIndex++] = (char) ((ch >> 6) | 0xc0);
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if (myTargetIndex < targetLength)
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{
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myTarget[myTargetIndex++] = (char) ((ch & 0x3f) | 0x80);
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}
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else
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{
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args->converter->charErrorBuffer[0] = (char) ((ch & 0x3f) | 0x80);
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args->converter->charErrorBufferLength = 1;
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*err = U_INDEX_OUTOFBOUNDS_ERROR;
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}
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}
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else
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/* Check for surogates */
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{
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if ((ch >= kSurrogateHighStart) && (ch <= kSurrogateHighEnd))
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{
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lowsurogate:
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if (mySourceIndex < sourceLength && !args->flush)
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{
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ch2 = mySource[mySourceIndex];
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if ((ch2 >= kSurrogateLowStart) && (ch2 <= kSurrogateLowEnd))
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{
|
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ch = ((ch - kSurrogateHighStart) << halfShift) + (ch2 - kSurrogateLowStart) + halfBase;
|
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++mySourceIndex;
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}
|
|
}
|
|
}
|
|
if (ch < 0x10000)
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{
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bytesToWrite = 3;
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temp[0] = (char) ((ch >> 12) | 0xe0);
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temp[1] = (char) ((ch >> 6) & 0x3f | 0x80);
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temp[2] = (char) (ch & 0x3f | 0x80);
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}
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else
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{
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bytesToWrite = 4;
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temp[0] = (char) ((ch >> 18) | 0xf0);
|
|
temp[1] = (char) ((ch >> 12) & 0x3f | 0xe0);
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temp[2] = (char) ((ch >> 6) & 0x3f | 0x80);
|
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temp[3] = (char) (ch & 0x3f | 0x80);
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}
|
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for (i = 0; i < bytesToWrite; i++)
|
|
{
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
myTarget[myTargetIndex++] = temp[i];
|
|
}
|
|
else
|
|
{
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args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[i];
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
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break;
|
|
}
|
|
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
|
|
return;
|
|
}
|
|
|
|
void T_UConverter_fromUnicode_UTF8_OFFSETS_LOGIC (UConverterFromUnicodeArgs * args,
|
|
UErrorCode * err)
|
|
{
|
|
const UChar *mySource = args->source;
|
|
unsigned char *myTarget = (unsigned char *) args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - (char *) myTarget;
|
|
int32_t sourceLength = args->sourceLimit - mySource;
|
|
uint32_t ch;
|
|
int16_t i, bytesToWrite = 0;
|
|
uint32_t ch2;
|
|
char temp[4];
|
|
|
|
if (args->converter->fromUnicodeStatus)
|
|
{
|
|
ch = args->converter->fromUnicodeStatus;
|
|
args->converter->fromUnicodeStatus = 0;
|
|
goto lowsurogate;
|
|
}
|
|
while (mySourceIndex < sourceLength)
|
|
{
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
bytesToWrite = 0;
|
|
ch = mySource[mySourceIndex++];
|
|
|
|
if (ch < 0x80) /* Single byte */
|
|
{
|
|
args->offsets[myTargetIndex] = mySourceIndex-1;
|
|
myTarget[myTargetIndex++] = (char) ch;
|
|
}
|
|
else if (ch < 0x800) /* Double byte */
|
|
{
|
|
args->offsets[myTargetIndex] = mySourceIndex-1;
|
|
myTarget[myTargetIndex++] = (char) ((ch >> 6) | 0xc0);
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
args->offsets[myTargetIndex] = mySourceIndex-1;
|
|
myTarget[myTargetIndex++] = (char) ((ch & 0x3f) | 0x80);
|
|
}
|
|
else
|
|
{
|
|
args->converter->charErrorBuffer[0] = (char) ((ch & 0x3f) | 0x80);
|
|
args->converter->charErrorBufferLength = 1;
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
}
|
|
else
|
|
/* Check for surogates */
|
|
{
|
|
if ((ch >= kSurrogateHighStart) && (ch <= kSurrogateHighEnd))
|
|
{
|
|
lowsurogate:
|
|
if (mySourceIndex < sourceLength && !args->flush)
|
|
{
|
|
ch2 = mySource[mySourceIndex];
|
|
if ((ch2 >= kSurrogateLowStart) && (ch2 <= kSurrogateLowEnd))
|
|
{
|
|
ch = ((ch - kSurrogateHighStart) << halfShift) + (ch2 - kSurrogateLowStart) + halfBase;
|
|
++mySourceIndex;
|
|
}
|
|
}
|
|
}
|
|
if (ch < 0x10000)
|
|
{
|
|
bytesToWrite = 3;
|
|
temp[0] = (char) ((ch >> 12) | 0xe0);
|
|
temp[1] = (char) ((ch >> 6) & 0x3f | 0x80);
|
|
temp[2] = (char) (ch & 0x3f | 0x80);
|
|
}
|
|
else
|
|
{
|
|
bytesToWrite = 4;
|
|
temp[0] = (char) ((ch >> 18) | 0xf0);
|
|
temp[1] = (char) ((ch >> 12) & 0x3f | 0xe0);
|
|
temp[2] = (char) ((ch >> 6) & 0x3f | 0x80);
|
|
temp[3] = (char) (ch & 0x3f | 0x80);
|
|
}
|
|
for (i = 0; i < bytesToWrite; i++)
|
|
{
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
args->offsets[myTargetIndex] = mySourceIndex-1;
|
|
myTarget[myTargetIndex++] = temp[i];
|
|
}
|
|
else
|
|
{
|
|
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[i];
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
|
|
return;
|
|
}
|
|
|
|
UChar32 T_UConverter_getNextUChar_UTF8(UConverterToUnicodeArgs *args,
|
|
UErrorCode* err)
|
|
{
|
|
/*safe keeps a ptr to the beginning in case we need to step back*/
|
|
char const *sourceInitial = args->source;
|
|
uint16_t extraBytesToWrite;
|
|
uint8_t myByte;
|
|
UChar32 ch;
|
|
int8_t isLegalSequence = 1;
|
|
|
|
/*Input boundary check*/
|
|
if (args->source >= args->sourceLimit)
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0xFFFD;
|
|
}
|
|
|
|
myByte = (uint8_t)*(args->source++);
|
|
if(myByte < 0x80) {
|
|
return (UChar32)myByte;
|
|
}
|
|
extraBytesToWrite = (uint16_t)bytesFromUTF8[myByte];
|
|
if (extraBytesToWrite == 0 || extraBytesToWrite > 4) {
|
|
goto CALL_ERROR_FUNCTION;
|
|
}
|
|
|
|
|
|
/*The byte sequence is longer than the buffer area passed*/
|
|
|
|
if ((args->source + extraBytesToWrite - 1) > args->sourceLimit)
|
|
{
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
return 0xFFFD;
|
|
}
|
|
else
|
|
{
|
|
ch = myByte << 6;
|
|
switch(extraBytesToWrite)
|
|
{
|
|
/* note: code falls through cases! (sic)*/
|
|
case 6: ch += (myByte = (uint8_t)*(args->source++)); ch <<= 6;
|
|
if ((myByte & 0xC0) != 0x80)
|
|
{
|
|
isLegalSequence = 0;
|
|
break;
|
|
}
|
|
case 5: ch += (myByte = *(args->source++)); ch <<= 6;
|
|
if ((myByte & 0xC0) != 0x80)
|
|
{
|
|
isLegalSequence = 0;
|
|
break;
|
|
}
|
|
case 4: ch += (myByte = *(args->source++)); ch <<= 6;
|
|
if ((myByte & 0xC0) != 0x80)
|
|
{
|
|
isLegalSequence = 0;
|
|
break;
|
|
}
|
|
case 3: ch += (myByte = *(args->source++)); ch <<= 6;
|
|
if ((myByte & 0xC0) != 0x80)
|
|
{
|
|
isLegalSequence = 0;
|
|
break;
|
|
}
|
|
case 2: ch += (myByte = *(args->source++));
|
|
if ((myByte & 0xC0) != 0x80)
|
|
{
|
|
isLegalSequence = 0;
|
|
}
|
|
};
|
|
}
|
|
ch -= offsetsFromUTF8[extraBytesToWrite];
|
|
|
|
|
|
if (isLegalSequence == 0) goto CALL_ERROR_FUNCTION;
|
|
|
|
return ch; /* return the code point */
|
|
|
|
CALL_ERROR_FUNCTION:
|
|
{
|
|
/*rewinds source*/
|
|
const char* sourceFinal = args->source;
|
|
UChar myUChar = (UChar)ch; /* ### TODO: this is a hack until we prepare the callbacks for code points */
|
|
UChar* myUCharPtr = &myUChar;
|
|
|
|
*err = U_ILLEGAL_CHAR_FOUND;
|
|
args->source = sourceInitial;
|
|
|
|
/*It is very likely that the ErrorFunctor will write to the
|
|
*internal buffers */
|
|
args->target = myUCharPtr;
|
|
args->targetLimit = myUCharPtr + 1;
|
|
args->source = sourceFinal;
|
|
args->converter->fromCharErrorBehaviour(args->converter->toUContext,
|
|
args,
|
|
sourceFinal,
|
|
args->sourceLimit-sourceFinal,
|
|
UCNV_UNASSIGNED,
|
|
err);
|
|
|
|
|
|
/*makes the internal caching transparent to the user*/
|
|
if (*err == U_INDEX_OUTOFBOUNDS_ERROR) *err = U_ZERO_ERROR;
|
|
|
|
return (UChar32)myUChar;
|
|
}
|
|
}
|
|
|
|
static const UConverterImpl _UTF8Impl={
|
|
UCNV_UTF8,
|
|
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
|
|
T_UConverter_toUnicode_UTF8,
|
|
T_UConverter_toUnicode_UTF8_OFFSETS_LOGIC,
|
|
T_UConverter_fromUnicode_UTF8,
|
|
T_UConverter_fromUnicode_UTF8_OFFSETS_LOGIC,
|
|
T_UConverter_getNextUChar_UTF8,
|
|
|
|
NULL
|
|
};
|
|
|
|
|
|
const UConverterStaticData _UTF8StaticData={
|
|
sizeof(UConverterStaticData),
|
|
"UTF8",
|
|
1208, UCNV_IBM, UCNV_UTF8, 1, 4,
|
|
3, { 0xef, 0xbf, 0xbd, 0 }
|
|
};
|
|
|
|
|
|
const UConverterSharedData _UTF8Data={
|
|
sizeof(UConverterSharedData), ~((uint32_t) 0),
|
|
NULL, NULL, &_UTF8StaticData, FALSE, &_UTF8Impl,
|
|
0
|
|
};
|
|
|
|
/* UTF-16BE ----------------------------------------------------------------- */
|
|
|
|
void T_UConverter_toUnicode_UTF16_BE (UConverterToUnicodeArgs * args,
|
|
UErrorCode * err)
|
|
{
|
|
const unsigned char *mySource = (unsigned char *) args->source;
|
|
UChar *myTarget = args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - myTarget;
|
|
int32_t sourceLength = args->sourceLimit - (char *) mySource;
|
|
UChar mySourceChar = 0x0000;
|
|
UChar oldmySourceChar = 0x0000;
|
|
|
|
|
|
while (mySourceIndex < sourceLength)
|
|
{
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
/*gets the corresponding UChar */
|
|
mySourceChar = (unsigned char) mySource[mySourceIndex++];
|
|
oldmySourceChar = mySourceChar;
|
|
if (args->converter->toUnicodeStatus == 0)
|
|
{
|
|
args->converter->toUnicodeStatus = (unsigned char) mySourceChar == 0x00 ? 0xFFFF : mySourceChar;
|
|
}
|
|
else
|
|
{
|
|
if (args->converter->toUnicodeStatus != 0xFFFF)
|
|
mySourceChar = (UChar) ((args->converter->toUnicodeStatus << 8) | mySourceChar);
|
|
args->converter->toUnicodeStatus = 0;
|
|
|
|
|
|
|
|
myTarget[myTargetIndex++] = mySourceChar;
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (U_SUCCESS(*err) && args->flush
|
|
&& (mySourceIndex == sourceLength)
|
|
&& (args->converter->toUnicodeStatus != 0x00))
|
|
{
|
|
if (U_SUCCESS(*err))
|
|
{
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
}
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
|
|
return;
|
|
}
|
|
|
|
void T_UConverter_fromUnicode_UTF16_BE (UConverterFromUnicodeArgs * args,
|
|
UErrorCode * err)
|
|
{
|
|
const UChar *mySource = args->source;
|
|
unsigned char *myTarget = (unsigned char *) args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - (char *) myTarget;
|
|
int32_t sourceLength = args->sourceLimit - mySource;
|
|
UChar mySourceChar;
|
|
|
|
/*writing the char to the output stream */
|
|
while (mySourceIndex < sourceLength)
|
|
{
|
|
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
mySourceChar = (UChar) mySource[mySourceIndex++];
|
|
myTarget[myTargetIndex++] = (char) (mySourceChar >> 8);
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
myTarget[myTargetIndex++] = (char) mySourceChar;
|
|
}
|
|
else
|
|
{
|
|
args->converter->charErrorBuffer[0] = (char) mySourceChar;
|
|
args->converter->charErrorBufferLength = 1;
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;;
|
|
|
|
return;
|
|
}
|
|
|
|
UChar32 T_UConverter_getNextUChar_UTF16_BE(UConverterToUnicodeArgs* args,
|
|
UErrorCode* err)
|
|
{
|
|
UChar32 myUChar;
|
|
/*Checks boundaries and set appropriate error codes*/
|
|
if (args->source+2 > args->sourceLimit)
|
|
{
|
|
if (args->source >= args->sourceLimit)
|
|
{
|
|
/*Either caller has reached the end of the byte stream*/
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
else
|
|
{
|
|
/* a character was cut in half*/
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
}
|
|
|
|
return 0xFFFD;
|
|
}
|
|
|
|
|
|
/*Gets the corresponding codepoint*/
|
|
|
|
myUChar = ((uint16_t)(*(args->source)) << 8) |((uint8_t)*((args->source)+1));
|
|
args->source += 2;
|
|
|
|
if(UTF_IS_FIRST_SURROGATE(myUChar)) {
|
|
uint16_t second;
|
|
|
|
if (args->source+2 > args->sourceLimit) {
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
return 0xFFFD;
|
|
}
|
|
|
|
/* get the second surrogate and assemble the code point */
|
|
second = ((uint16_t)(*(args->source)) << 8) |((uint8_t)*(args->source+1));
|
|
|
|
/* ignore unmatched surrogates and just deliver the first one in such a case */
|
|
if(UTF_IS_SECOND_SURROGATE(second)) {
|
|
/* matched pair, get pair value */
|
|
myUChar = UTF16_GET_PAIR_VALUE(myUChar, second);
|
|
args->source += 2;
|
|
}
|
|
}
|
|
|
|
return myUChar;
|
|
}
|
|
|
|
static const UConverterImpl _UTF16BEImpl={
|
|
UCNV_UTF16_BigEndian,
|
|
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
|
|
T_UConverter_toUnicode_UTF16_BE,
|
|
NULL,
|
|
T_UConverter_fromUnicode_UTF16_BE,
|
|
NULL,
|
|
T_UConverter_getNextUChar_UTF16_BE,
|
|
|
|
NULL
|
|
};
|
|
|
|
const UConverterStaticData _UTF16BEStaticData={
|
|
sizeof(UConverterStaticData),
|
|
"UTF16_BigEndian",
|
|
1200, UCNV_IBM, UCNV_UTF16_BigEndian, 2, 2,
|
|
2, { 0xff, 0xfd, 0, 0 }
|
|
};
|
|
|
|
|
|
const UConverterSharedData _UTF16BEData={
|
|
sizeof(UConverterSharedData), ~((uint32_t) 0),
|
|
NULL, NULL, &_UTF16BEStaticData, FALSE, &_UTF16BEImpl,
|
|
0
|
|
};
|
|
|
|
/* UTF-16LE ----------------------------------------------------------------- */
|
|
|
|
void T_UConverter_toUnicode_UTF16_LE (UConverterToUnicodeArgs * args,
|
|
UErrorCode * err)
|
|
{
|
|
const unsigned char *mySource = (unsigned char *) args->source;
|
|
UChar *myTarget = args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - myTarget;
|
|
int32_t sourceLength = args->sourceLimit - (char *) mySource;
|
|
UChar mySourceChar = 0x0000;
|
|
|
|
while (mySourceIndex < sourceLength)
|
|
{
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
/*gets the corresponding UniChar */
|
|
mySourceChar = (unsigned char) mySource[mySourceIndex++];
|
|
|
|
if (args->converter->toUnicodeStatus == 0x00)
|
|
{
|
|
args->converter->toUnicodeStatus = (unsigned char) mySourceChar == 0x00 ? 0xFFFF : mySourceChar;
|
|
}
|
|
else
|
|
{
|
|
if (args->converter->toUnicodeStatus == 0xFFFF)
|
|
mySourceChar = (UChar) (mySourceChar << 8);
|
|
else
|
|
{
|
|
mySourceChar <<= 8;
|
|
mySourceChar |= (UChar) (args->converter->toUnicodeStatus);
|
|
}
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
myTarget[myTargetIndex++] = mySourceChar;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
if (U_SUCCESS(*err) && args->flush
|
|
&& (mySourceIndex == sourceLength)
|
|
&& (args->converter->toUnicodeStatus != 0x00))
|
|
{
|
|
if (U_SUCCESS(*err))
|
|
{
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
args->converter->toUnicodeStatus = 0x00;
|
|
}
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;
|
|
|
|
|
|
return;
|
|
}
|
|
|
|
void T_UConverter_fromUnicode_UTF16_LE (UConverterFromUnicodeArgs * args,
|
|
UErrorCode * err)
|
|
{
|
|
const UChar *mySource = args->source;
|
|
unsigned char *myTarget = (unsigned char *) args->target;
|
|
int32_t mySourceIndex = 0;
|
|
int32_t myTargetIndex = 0;
|
|
int32_t targetLength = args->targetLimit - (char *) myTarget;
|
|
int32_t sourceLength = args->sourceLimit - mySource;
|
|
UChar mySourceChar;
|
|
|
|
|
|
/*writing the char to the output stream */
|
|
while (mySourceIndex < sourceLength)
|
|
{
|
|
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
mySourceChar = (UChar) mySource[mySourceIndex++];
|
|
myTarget[myTargetIndex++] = (char) mySourceChar;
|
|
if (myTargetIndex < targetLength)
|
|
{
|
|
myTarget[myTargetIndex++] = (char) (mySourceChar >> 8);
|
|
}
|
|
else
|
|
{
|
|
args->converter->charErrorBuffer[0] = (char) (mySourceChar >> 8);
|
|
args->converter->charErrorBufferLength = 1;
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
args->target += myTargetIndex;
|
|
args->source += mySourceIndex;;
|
|
|
|
return;
|
|
}
|
|
|
|
UChar32 T_UConverter_getNextUChar_UTF16_LE(UConverterToUnicodeArgs* args,
|
|
UErrorCode* err)
|
|
{
|
|
UChar32 myUChar;
|
|
/*Checks boundaries and set appropriate error codes*/
|
|
if (args->source+2 > args->sourceLimit)
|
|
{
|
|
if (args->source >= args->sourceLimit)
|
|
{
|
|
/*Either caller has reached the end of the byte stream*/
|
|
*err = U_INDEX_OUTOFBOUNDS_ERROR;
|
|
}
|
|
else
|
|
{
|
|
/* a character was cut in half*/
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
}
|
|
|
|
return 0xFFFD;
|
|
}
|
|
|
|
|
|
/*Gets the corresponding codepoint*/
|
|
myUChar = ((uint16_t)*((args->source)+1) << 8) |((uint8_t)(*(args->source)));
|
|
/*updates the source*/
|
|
args->source += 2;
|
|
|
|
if(UTF_IS_FIRST_SURROGATE(myUChar)) {
|
|
uint16_t second;
|
|
|
|
if (args->source+2 > args->sourceLimit) {
|
|
*err = U_TRUNCATED_CHAR_FOUND;
|
|
return 0xFFFD;
|
|
}
|
|
|
|
/* get the second surrogate and assemble the code point */
|
|
second = ((uint16_t)*(args->source+1) << 8) |((uint8_t)(*(args->source)));
|
|
|
|
/* ignore unmatched surrogates and just deliver the first one in such a case */
|
|
if(UTF_IS_SECOND_SURROGATE(second)) {
|
|
/* matched pair, get pair value */
|
|
myUChar = UTF16_GET_PAIR_VALUE(myUChar, second);
|
|
args->source += 2;
|
|
}
|
|
}
|
|
|
|
return myUChar;
|
|
}
|
|
|
|
static const UConverterImpl _UTF16LEImpl={
|
|
UCNV_UTF16_LittleEndian,
|
|
|
|
NULL,
|
|
NULL,
|
|
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
|
|
T_UConverter_toUnicode_UTF16_LE,
|
|
NULL,
|
|
T_UConverter_fromUnicode_UTF16_LE,
|
|
NULL,
|
|
T_UConverter_getNextUChar_UTF16_LE,
|
|
|
|
NULL
|
|
};
|
|
|
|
|
|
const UConverterStaticData _UTF16LEStaticData={
|
|
sizeof(UConverterStaticData),
|
|
"UTF16_LittleEndian",
|
|
1200, UCNV_IBM, UCNV_UTF16_LittleEndian, 2, 2,
|
|
2, { 0xfd, 0xff, 0, 0 }
|
|
};
|
|
|
|
|
|
const UConverterSharedData _UTF16LEData={
|
|
sizeof(UConverterSharedData), ~((uint32_t) 0),
|
|
NULL, NULL, &_UTF16LEStaticData, FALSE, &_UTF16LEImpl,
|
|
0
|
|
};
|