blob: 9e3b0dc44c17e9740ba482aa744d3b4a38e14269 [file] [log] [blame]
/*
**********************************************************************
* Copyright (C) 2000, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* file name: ucnv_utf.cpp
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2000feb03
* created by: Markus W. Scherer
*
* Change history:
*
* 06/29/2000 helena Major rewrite of the callback APIs.
* 07/20/2000 george Change the coding style to conform to the coding guidelines,
* and a few miscellaneous bug fixes.
* 11/15/2000 george Added UTF-32
*/
#include "cmemory.h"
#include "unicode/utypes.h"
#include "unicode/ucnv_err.h"
#include "ucnv_bld.h"
#include "unicode/ucnv.h"
#include "ucnv_cnv.h"
/* Prototypes --------------------------------------------------------------- */
/* Keep these here to make finicky compilers happy */
U_CFUNC void T_UConverter_toUnicode_UTF8(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_toUnicode_UTF8_OFFSETS_LOGIC(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF8(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF8_OFFSETS_LOGIC(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF8(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void _UTF16PEToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC void _UTF16PEFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC void _UTF16OEToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC void _UTF16OEFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF16_BE(UConverterToUnicodeArgs* args,
UErrorCode* err);
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF16_LE(UConverterToUnicodeArgs* args,
UErrorCode* err);
U_CFUNC void T_UConverter_toUnicode_UTF32_BE(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_toUnicode_UTF32_BE_OFFSET_LOGIC(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF32_BE(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF32_BE_OFFSET_LOGIC(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF32_BE(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_toUnicode_UTF32_LE(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_toUnicode_UTF32_LE_OFFSET_LOGIC(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF32_LE(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void T_UConverter_fromUnicode_UTF32_LE_OFFSET_LOGIC(UConverterFromUnicodeArgs *args,
UErrorCode *err);
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF32_LE(UConverterToUnicodeArgs *args,
UErrorCode *err);
U_CFUNC void _UTF7Reset(UConverter *cnv, UConverterResetChoice choice);
U_CFUNC void _UTF7Open(UConverter *cnv,
const char *name,
const char *locale,
uint32_t options,
UErrorCode *pErrorCode);
U_CFUNC void _UTF7ToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC UChar32 _UTF7GetNextUChar(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC void _UTF7FromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
UErrorCode *pErrorCode);
U_CFUNC const char * _UTF7GetName(const UConverter *cnv);
/* UTF-8 -------------------------------------------------------------------- */
/* UTF-8 Conversion DATA
* for more information see Unicode Strandard 2.0 , Transformation Formats Appendix A-9
*/
/*static const uint32_t REPLACEMENT_CHARACTER = 0x0000FFFD;*/
#define MAXIMUM_UCS2 0x0000FFFF
#define MAXIMUM_UTF 0x0010FFFF
#define MAXIMUM_UCS4 0x7FFFFFFF
#define HALF_SHIFT 10
#define HALF_BASE 0x0010000
#define HALF_MASK 0x3FF
#define SURROGATE_HIGH_START 0xD800
#define SURROGATE_HIGH_END 0xDBFF
#define SURROGATE_LOW_START 0xDC00
#define SURROGATE_LOW_END 0xDFFF
/* -SURROGATE_LOW_START + HALF_BASE */
#define SURROGATE_LOW_BASE 9216
static const uint32_t offsetsFromUTF8[7] = {0,
(uint32_t) 0x00000000, (uint32_t) 0x00003080, (uint32_t) 0x000E2080,
(uint32_t) 0x03C82080, (uint32_t) 0xFA082080, (uint32_t) 0x82082080
};
/* END OF UTF-8 Conversion DATA */
static const int8_t bytesFromUTF8[256] = {
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,
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,
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,
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,
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,
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,
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
};
/* static const unsigned char firstByteMark[7] = {0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC};*/
#define INVALID_UTF8_TAIL(utf8) (((utf8) & 0xC0) != 0x80)
/**
* Calls invalid char callback when an invalid character sequence is encountered.
* It presumes that the converter has a callback to call.
*
* @returns true when callback fails
*/
static UBool
T_UConverter_toUnicode_InvalidChar_Callback(UConverterToUnicodeArgs * args,
UErrorCode *err)
{
UConverter *converter = args->converter;
if (U_SUCCESS(*err))
{
*err = U_ILLEGAL_CHAR_FOUND;
}
/* copy the toUBytes to the invalidCharBuffer */
uprv_memcpy(converter->invalidCharBuffer,
converter->toUBytes,
converter->invalidCharLength);
/* Call the ErrorFunction */
args->converter->fromCharErrorBehaviour(converter->toUContext,
args,
converter->invalidCharBuffer,
converter->invalidCharLength,
UCNV_ILLEGAL,
err);
return (UBool)U_FAILURE(*err);
}
static UBool
T_UConverter_toUnicode_InvalidChar_OffsetCallback(UConverterToUnicodeArgs * args,
int32_t currentOffset,
UErrorCode *err)
{
int32_t *saveOffsets = args->offsets;
UBool result;
result = T_UConverter_toUnicode_InvalidChar_Callback(args, err);
while (saveOffsets < args->offsets)
{
*(saveOffsets++) = currentOffset;
}
return result;
}
U_CFUNC void T_UConverter_toUnicode_UTF8 (UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
UBool invalidTailChar = FALSE;
uint32_t ch, ch2 = 0, i;
uint32_t inBytes; /* Total number of bytes in the current UTF8 sequence */
/* Restore size of current sequence */
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
inBytes = args->converter->toULength; /* restore # of bytes to consume */
i = args->converter->invalidCharLength; /* restore # of bytes consumed */
ch = args->converter->toUnicodeStatus;/*Stores the previously calculated ch from a previous call*/
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (ch < 0x80) /* Simple case */
{
*(myTarget++) = (UChar) ch;
}
else
{
/* store the first char */
toUBytes[0] = (char)ch;
inBytes = bytesFromUTF8[ch]; /* lookup current sequence length */
i = 1;
morebytes:
while (i < inBytes)
{
if (mySource < sourceLimit)
{
toUBytes[i] = (char) (ch2 = *(mySource++));
if (INVALID_UTF8_TAIL(ch2))
{
*err = U_TRUNCATED_CHAR_FOUND;
invalidTailChar = TRUE;
break;
}
ch = (ch << 6) + ch2;
i++;
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
}
}
else
{ /* stores a partially calculated target*/
args->converter->toUnicodeStatus = ch;
args->converter->toULength = (int8_t) inBytes;
args->converter->invalidCharLength = (int8_t) i;
}
goto donefornow;
}
}
/* Remove the acummulated high bits */
ch -= offsetsFromUTF8[inBytes];
if (i == inBytes && ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
}
else
{
/* write out the surrogates */
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
else
{
args->source = (const char *) mySource;
args->target = myTarget;
args->converter->invalidCharLength = (int8_t)i;
if (T_UConverter_toUnicode_InvalidChar_Callback(args, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
if (invalidTailChar)
{
/* Treat the tail as ASCII*/
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar) ch2;
invalidTailChar = FALSE;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch2;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
}
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
/* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
}
U_CFUNC void T_UConverter_toUnicode_UTF8_OFFSETS_LOGIC (UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
int32_t *myOffsets = args->offsets;
int32_t offsetNum = 0;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
UBool invalidTailChar = FALSE;
uint32_t ch, ch2 = 0, i;
uint32_t inBytes;
/* Restore size of current sequence */
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
inBytes = args->converter->toULength; /* restore # of bytes to consume */
i = args->converter->invalidCharLength; /* restore # of bytes consumed */
ch = args->converter->toUnicodeStatus;/*Stores the previously calculated ch from a previous call*/
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (ch < 0x80) /* Simple case */
{
*(myTarget++) = (UChar) ch;
*(myOffsets++) = offsetNum++;
}
else
{
toUBytes[0] = (char)ch;
inBytes = bytesFromUTF8[ch];
i = 1;
morebytes:
while (i < inBytes)
{
if (mySource < sourceLimit)
{
toUBytes[i] = (char) (ch2 = *(mySource++));
if (INVALID_UTF8_TAIL(ch2))
{
*err = U_TRUNCATED_CHAR_FOUND;
invalidTailChar = TRUE;
break;
}
ch = (ch << 6) + ch2;
i++;
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
args->converter->toUnicodeStatus = 0;
}
}
else
{
args->converter->toUnicodeStatus = ch;
args->converter->toULength = (int8_t)inBytes;
args->converter->invalidCharLength = (int8_t)i;
}
goto donefornow;
}
}
/* Remove the acummulated high bits */
ch -= offsetsFromUTF8[inBytes];
if (i == inBytes && ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
*(myOffsets++) = offsetNum;
}
else
{
/* write out the surrogates */
*(myOffsets++) = offsetNum;
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
*(myOffsets++) = offsetNum;
}
else
{
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
offsetNum += i;
}
else
{
UBool useOffset;
args->source = (const char *) mySource;
args->target = myTarget;
args->offsets = myOffsets;
args->converter->invalidCharLength = (int8_t)i;
if (T_UConverter_toUnicode_InvalidChar_OffsetCallback(args,
offsetNum, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
useOffset = (UBool)(myOffsets != args->offsets);
myOffsets = args->offsets;
offsetNum += i;
if (invalidTailChar)
{
/* Treat the tail as ASCII*/
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar) ch2;
*myOffsets = offsetNum++;
if (useOffset)
{
/* Increment when the target was consumed */
myOffsets++;
}
invalidTailChar = FALSE;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch2;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
}
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{ /* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
args->offsets = myOffsets;
}
U_CFUNC void T_UConverter_fromUnicode_UTF8 (UConverterFromUnicodeArgs * args,
UErrorCode * err)
{
const UChar *mySource = args->source;
unsigned char *myTarget = (unsigned char *) args->target;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
uint32_t ch, ch2;
int16_t indexToWrite;
char temp[4];
if (args->converter->fromUnicodeStatus && myTarget < targetLimit)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (ch < 0x80) /* Single byte */
{
*(myTarget++) = (char) ch;
}
else if (ch < 0x800) /* Double byte */
{
*(myTarget++) = (char) ((ch >> 6) | 0xc0);
if (myTarget < targetLimit)
{
*(myTarget++) = (char) ((ch & 0x3f) | 0x80);
}
else
{
args->converter->charErrorBuffer[0] = (char) ((ch & 0x3f) | 0x80);
args->converter->charErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
else
/* Check for surogates */
{
if ((ch >= SURROGATE_HIGH_START) && (ch <= SURROGATE_HIGH_END))
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if ((ch2 >= SURROGATE_LOW_START) && (ch2 <= SURROGATE_LOW_END))
{
/* If there were two surrogates, combine them otherwise treat them normally */
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
args->converter->fromUnicodeStatus = ch;
break;
}
}
if (ch < 0x10000)
{
indexToWrite = 2;
temp[2] = (char) ((ch >> 12) | 0xe0);
}
else
{
indexToWrite = 3;
temp[3] = (char) ((ch >> 18) | 0xf0);
temp[2] = (char) (((ch >> 12) & 0x3f) | 0x80);
}
temp[1] = (char) (((ch >> 6) & 0x3f) | 0x80);
temp[0] = (char) ((ch & 0x3f) | 0x80);
for (; indexToWrite >= 0; indexToWrite--)
{
if (myTarget < targetLimit)
{
*(myTarget++) = temp[indexToWrite];
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
}
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC 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 *myOffsets = args->offsets;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
uint32_t ch, ch2;
int32_t offsetNum = 0;
int16_t indexToWrite;
char temp[4];
if (args->converter->fromUnicodeStatus && myTarget < targetLimit)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (ch < 0x80) /* Single byte */
{
*(myOffsets++) = offsetNum++;
*(myTarget++) = (char) ch;
}
else if (ch < 0x800) /* Double byte */
{
*(myOffsets++) = offsetNum;
*(myTarget++) = (char) ((ch >> 6) | 0xc0);
if (myTarget < targetLimit)
{
*(myOffsets++) = offsetNum++;
*(myTarget++) = (char) ((ch & 0x3f) | 0x80);
}
else
{
args->converter->charErrorBuffer[0] = (char) ((ch & 0x3f) | 0x80);
args->converter->charErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
else
/* Check for surogates */
{
if ((ch >= SURROGATE_HIGH_START) && (ch <= SURROGATE_HIGH_END))
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if ((ch2 >= SURROGATE_LOW_START) && (ch2 <= SURROGATE_LOW_END))
{
/* If there were two surrogates, combine them otherwise treat them normally */
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
args->converter->fromUnicodeStatus = ch;
break;
}
}
if (ch < 0x10000)
{
indexToWrite = 2;
temp[2] = (char) ((ch >> 12) | 0xe0);
}
else
{
indexToWrite = 3;
temp[3] = (char) ((ch >> 18) | 0xf0);
temp[2] = (char) (((ch >> 12) & 0x3f) | 0x80);
}
temp[1] = (char) (((ch >> 6) & 0x3f) | 0x80);
temp[0] = (char) ((ch & 0x3f) | 0x80);
for (; indexToWrite >= 0; indexToWrite--)
{
if (myTarget < targetLimit)
{
*(myOffsets++) = offsetNum;
*(myTarget++) = temp[indexToWrite];
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
offsetNum += (ch >= 0x10000) + 1;
}
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF8(UConverterToUnicodeArgs *args,
UErrorCode *err) {
UChar buffer[2];
char const *sourceInitial;
UChar* myUCharPtr;
uint16_t extraBytesToWrite;
uint8_t myByte;
UChar32 ch;
int8_t isLegalSequence;
while (args->source < args->sourceLimit)
{
sourceInitial = args->source;
myByte = (uint8_t)*(args->source++);
if (myByte < 0x80)
{
return (UChar32)myByte;
}
extraBytesToWrite = (uint16_t)bytesFromUTF8[myByte];
if (extraBytesToWrite == 0) {
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 0xffff;
}
else
{
isLegalSequence = 1;
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 && extraBytesToWrite <= 4 && ch <= 0x10ffff) {
return ch; /* return the code point */
}
CALL_ERROR_FUNCTION:
extraBytesToWrite = (uint16_t)(args->source - sourceInitial);
args->converter->invalidCharLength = (uint8_t)extraBytesToWrite;
uprv_memcpy(args->converter->invalidCharBuffer, sourceInitial, extraBytesToWrite);
myUCharPtr = buffer;
*err = U_ILLEGAL_CHAR_FOUND;
args->target = myUCharPtr;
args->targetLimit = buffer + 2;
args->converter->fromCharErrorBehaviour(args->converter->toUContext,
args,
sourceInitial,
extraBytesToWrite,
UCNV_ILLEGAL,
err);
if(U_SUCCESS(*err)) {
extraBytesToWrite = (uint16_t)(args->target - buffer);
if(extraBytesToWrite > 0) {
return ucnv_getUChar32KeepOverflow(args->converter, buffer, extraBytesToWrite);
}
/* else (callback did not write anything) continue */
} else if(*err == U_BUFFER_OVERFLOW_ERROR) {
*err = U_ZERO_ERROR;
return ucnv_getUChar32KeepOverflow(args->converter, buffer, 2);
} else {
/* break on error */
/* ### what if a callback set an error but _also_ generated output?! */
return 0xffff;
}
}
/* no input or only skipping callback calls */
*err = U_INDEX_OUTOFBOUNDS_ERROR;
return 0xffff;
}
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,
NULL
};
/* Todo: verify that UTF-8 == (ccsid (ibm-codepage) 1208) for unicode version 2.0 and 3.0 */
const UConverterStaticData _UTF8StaticData={
sizeof(UConverterStaticData),
"UTF8",
1208, UCNV_IBM, UCNV_UTF8, 1, 4,
{ 0xef, 0xbf, 0xbd, 0 },3,FALSE,FALSE,
0,
0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
};
const UConverterSharedData _UTF8Data={
sizeof(UConverterSharedData), ~((uint32_t) 0),
NULL, NULL, &_UTF8StaticData, FALSE, &_UTF8Impl,
0
};
/* UTF-16 Platform Endian --------------------------------------------------- */
U_CFUNC void
_UTF16PEToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode) {
UConverter *cnv = pArgs->converter;
const uint8_t *source = (const uint8_t *)pArgs->source;
UChar *target = pArgs->target;
int32_t *offsets = pArgs->offsets;
int32_t targetCapacity = pArgs->targetLimit - pArgs->target;
int32_t length = (const uint8_t *)pArgs->sourceLimit - source;
int32_t count;
int32_t sourceIndex = 0;
if(length <= 0) {
/* no input, nothing to do */
return;
}
if(targetCapacity <= 0) {
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
return;
}
/* complete a partial UChar from the last call */
if(cnv->toUnicodeStatus != 0) {
/*
* copy the byte from the last call and the first one here into the target,
* byte-wise to keep the platform endianness
*/
uint8_t *p = (uint8_t *)target++;
*p++ = (uint8_t)cnv->toUnicodeStatus;
cnv->toUnicodeStatus = 0;
*p = *source++;
--length;
--targetCapacity;
if(offsets != NULL) {
*offsets++ = -1;
}
}
/* copy an even number of bytes for complete UChars */
count = 2 * targetCapacity;
if(count > length) {
count = length & ~1;
}
if(count > 0) {
uprv_memcpy(target, source, count);
source += count;
length -= count;
count >>= 1;
target += count;
targetCapacity -= count;
if(offsets != NULL) {
while(count > 0) {
*offsets++ = sourceIndex;
sourceIndex += 2;
--count;
}
}
}
/* check for a remaining source byte and store the status */
if(length >= 2) {
/* it must be targetCapacity==0 because otherwise the above would have copied more */
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
} else if(length == 1) {
if(pArgs->flush) {
/* a UChar remains incomplete */
*pErrorCode = U_TRUNCATED_CHAR_FOUND;
} else {
/* consume the last byte and store it, making sure that it will never set the status to 0 */
cnv->toUnicodeStatus = *source++ | 0x100;
}
/* } else length==0 { nothing to do */
}
/* write back the updated pointers */
pArgs->source = (const char *)source;
pArgs->target = target;
pArgs->offsets = offsets;
}
U_CFUNC void
_UTF16PEFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
UErrorCode *pErrorCode) {
UConverter *cnv = pArgs->converter;
const UChar *source = pArgs->source;
uint8_t *target = (uint8_t *)pArgs->target;
int32_t *offsets = pArgs->offsets;
int32_t targetCapacity = pArgs->targetLimit - pArgs->target;
int32_t length = pArgs->sourceLimit - source;
int32_t count;
int32_t sourceIndex = 0;
if(length <= 0 && cnv->fromUnicodeStatus == 0) {
/* no input, nothing to do */
return;
}
if(targetCapacity <= 0) {
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
return;
}
/* complete a partial UChar from the last call */
if(cnv->fromUnicodeStatus != 0) {
*target++ = (uint8_t)cnv->fromUnicodeStatus;
cnv->fromUnicodeStatus = 0;
--targetCapacity;
if(offsets != NULL) {
*offsets++ = -1;
}
}
/* copy an even number of bytes for complete UChars */
count = 2 * length;
if(count > targetCapacity) {
count = targetCapacity & ~1;
}
if(count>0) {
uprv_memcpy(target, source, count);
target += count;
targetCapacity -= count;
count >>= 1;
source += count;
length -= count;
if(offsets != NULL) {
while(count > 0) {
*offsets++ = sourceIndex;
*offsets++ = sourceIndex++;
--count;
}
}
}
if(length > 0) {
/* it must be targetCapacity<=1 because otherwise the above would have copied more */
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
if(targetCapacity > 0) /* targetCapacity==1 */ {
/* copy one byte and keep the other in the status */
const uint8_t *p = (const uint8_t *)source++;
*target++ = *p++;
cnv->fromUnicodeStatus = *p | 0x100;
if(offsets != NULL) {
*offsets++ = sourceIndex;
}
}
}
/* write back the updated pointers */
pArgs->source = source;
pArgs->target = (char *)target;
pArgs->offsets = offsets;
}
/* UTF-16 Opposite Endian --------------------------------------------------- */
/*
* For opposite-endian UTF-16, we keep a byte pointer to the UChars
* and copy two bytes at a time and reverse them.
*/
U_CFUNC void
_UTF16OEToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs,
UErrorCode *pErrorCode) {
UConverter *cnv = pArgs->converter;
const uint8_t *source = (const uint8_t *)pArgs->source;
UChar *target = pArgs->target;
uint8_t *target8 = (uint8_t *)target; /* byte pointer to the target */
int32_t *offsets = pArgs->offsets;
int32_t targetCapacity = pArgs->targetLimit - pArgs->target;
int32_t length = (const uint8_t *)pArgs->sourceLimit - source;
int32_t count;
int32_t sourceIndex = 0;
if(length <= 0) {
/* no input, nothing to do */
return;
}
if(targetCapacity <= 0) {
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
return;
}
/* complete a partial UChar from the last call */
if(cnv->toUnicodeStatus != 0) {
/*
* copy the byte from the last call and the first one here into the target,
* byte-wise, reversing the platform endianness
*/
*target8++ = *source++;
*target8++ = (uint8_t)cnv->toUnicodeStatus;
cnv->toUnicodeStatus = 0;
++target;
--length;
--targetCapacity;
if(offsets != NULL) {
*offsets++ = -1;
}
}
/* copy an even number of bytes for complete UChars */
count = 2 * targetCapacity;
if(count > length) {
count = length & ~1;
}
if(count>0) {
length -= count;
count >>= 1;
targetCapacity -= count;
if(offsets == NULL) {
while(count > 0) {
target8[1] = *source++;
target8[0] = *source++;
target8 += 2;
--count;
}
} else {
while(count>0) {
target8[1] = *source++;
target8[0] = *source++;
target8 += 2;
*offsets++ = sourceIndex;
sourceIndex += 2;
--count;
}
}
target=(UChar *)target8;
}
/* check for a remaining source byte and store the status */
if(length >= 2) {
/* it must be targetCapacity==0 because otherwise the above would have copied more */
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
} else if(length == 1) {
if(pArgs->flush) {
/* a UChar remains incomplete */
*pErrorCode = U_TRUNCATED_CHAR_FOUND;
} else {
/* consume the last byte and store it, making sure that it will never set the status to 0 */
cnv->toUnicodeStatus = *source++ | 0x100;
}
/* } else length==0 { nothing to do */
}
/* write back the updated pointers */
pArgs->source = (const char *)source;
pArgs->target = target;
pArgs->offsets = offsets;
}
U_CFUNC void
_UTF16OEFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs,
UErrorCode *pErrorCode) {
UConverter *cnv = pArgs->converter;
const UChar *source = pArgs->source;
const uint8_t *source8 = (const uint8_t *)source; /* byte pointer to the source */
uint8_t *target = (uint8_t *)pArgs->target;
int32_t *offsets = pArgs->offsets;
int32_t targetCapacity = pArgs->targetLimit - pArgs->target;
int32_t length = pArgs->sourceLimit - source;
int32_t count;
int32_t sourceIndex = 0;
if(length <= 0 && cnv->fromUnicodeStatus == 0) {
/* no input, nothing to do */
return;
}
if(targetCapacity <= 0) {
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
return;
}
/* complete a partial UChar from the last call */
if(cnv->fromUnicodeStatus != 0) {
*target++ = (uint8_t)cnv->fromUnicodeStatus;
cnv->fromUnicodeStatus = 0;
--targetCapacity;
if(offsets != NULL) {
*offsets++ = -1;
}
}
/* copy an even number of bytes for complete UChars */
count = 2 * length;
if(count > targetCapacity) {
count = targetCapacity & ~1;
}
if(count > 0) {
targetCapacity -= count;
count >>= 1;
length -= count;
if(offsets == NULL) {
while(count > 0) {
target[1] = *source8++;
target[0] = *source8++;
target += 2;
--count;
}
} else {
while(count>0) {
target[1] = *source8++;
target[0] = *source8++;
target += 2;
*offsets++ = sourceIndex;
*offsets++ = sourceIndex++;
--count;
}
}
source=(const UChar *)source8;
}
if(length > 0) {
/* it must be targetCapacity<=1 because otherwise the above would have copied more */
*pErrorCode = U_BUFFER_OVERFLOW_ERROR;
if(targetCapacity > 0) /* targetCapacity==1 */ {
/* copy one byte and keep the other in the status */
cnv->fromUnicodeStatus = *source8++ | 0x100;
*target++ = *source8;
++source;
if(offsets != NULL) {
*offsets++ = sourceIndex;
}
}
}
/* write back the updated pointers */
pArgs->source = source;
pArgs->target = (char *)target;
pArgs->offsets = offsets;
}
/* UTF-16BE ----------------------------------------------------------------- */
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF16_BE(UConverterToUnicodeArgs* args,
UErrorCode* err)
{
UChar32 myUChar;
uint16_t first;
/*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 0xffff;
}
/*Gets the corresponding codepoint*/
first = (uint16_t)(((uint16_t)(*(args->source)) << 8) |((uint8_t)*((args->source)+1)));
myUChar = first;
args->source += 2;
if(UTF_IS_FIRST_SURROGATE(first)) {
uint16_t second;
if (args->source+2 > args->sourceLimit) {
*err = U_TRUNCATED_CHAR_FOUND;
return 0xffff;
}
/* get the second surrogate and assemble the code point */
second = (uint16_t)(((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(first, second);
args->source += 2;
}
}
return myUChar;
}
static const UConverterImpl _UTF16BEImpl={
UCNV_UTF16_BigEndian,
NULL,
NULL,
NULL,
NULL,
NULL,
#if U_IS_BIG_ENDIAN
_UTF16PEToUnicodeWithOffsets,
_UTF16PEToUnicodeWithOffsets,
_UTF16PEFromUnicodeWithOffsets,
_UTF16PEFromUnicodeWithOffsets,
#else
_UTF16OEToUnicodeWithOffsets,
_UTF16OEToUnicodeWithOffsets,
_UTF16OEFromUnicodeWithOffsets,
_UTF16OEFromUnicodeWithOffsets,
#endif
T_UConverter_getNextUChar_UTF16_BE,
NULL,
NULL
};
/* Todo: verify that UTF-16BE == (ccsid (ibm-codepage) 1200) for unicode version 2.0 and 3.0 */
const UConverterStaticData _UTF16BEStaticData={
sizeof(UConverterStaticData),
"UTF16_BigEndian",
1200, UCNV_IBM, UCNV_UTF16_BigEndian, 2, 2,
{ 0xff, 0xfd, 0, 0 },2,FALSE,FALSE,
0,
0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
};
const UConverterSharedData _UTF16BEData={
sizeof(UConverterSharedData), ~((uint32_t) 0),
NULL, NULL, &_UTF16BEStaticData, FALSE, &_UTF16BEImpl,
0
};
/* UTF-16LE ----------------------------------------------------------------- */
U_CFUNC UChar32 T_UConverter_getNextUChar_UTF16_LE(UConverterToUnicodeArgs* args,
UErrorCode* err)
{
UChar32 myUChar;
uint16_t first;
/*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 0xffff;
}
/*Gets the corresponding codepoint*/
first = (uint16_t)(((uint16_t)*((args->source)+1) << 8) | ((uint8_t)(*(args->source))));
myUChar=first;
/*updates the source*/
args->source += 2;
if (UTF_IS_FIRST_SURROGATE(first))
{
uint16_t second;
if (args->source+2 > args->sourceLimit)
{
*err = U_TRUNCATED_CHAR_FOUND;
return 0xffff;
}
/* get the second surrogate and assemble the code point */
second = (uint16_t)(((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(first, second);
args->source += 2;
}
}
return myUChar;
}
static const UConverterImpl _UTF16LEImpl={
UCNV_UTF16_LittleEndian,
NULL,
NULL,
NULL,
NULL,
NULL,
#if !U_IS_BIG_ENDIAN
_UTF16PEToUnicodeWithOffsets,
_UTF16PEToUnicodeWithOffsets,
_UTF16PEFromUnicodeWithOffsets,
_UTF16PEFromUnicodeWithOffsets,
#else
_UTF16OEToUnicodeWithOffsets,
_UTF16OEToUnicodeWithOffsets,
_UTF16OEFromUnicodeWithOffsets,
_UTF16OEFromUnicodeWithOffsets,
#endif
T_UConverter_getNextUChar_UTF16_LE,
NULL,
NULL
};
/* Todo: verify that UTF-16LE == (ccsid (ibm-codepage) 1200) for unicode version 2.0 and 3.0 */
const UConverterStaticData _UTF16LEStaticData={
sizeof(UConverterStaticData),
"UTF16_LittleEndian",
1200, UCNV_IBM, UCNV_UTF16_LittleEndian, 2, 2,
{ 0xfd, 0xff, 0, 0 },2,FALSE,FALSE,
0,
0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
};
const UConverterSharedData _UTF16LEData={
sizeof(UConverterSharedData), ~((uint32_t) 0),
NULL, NULL, &_UTF16LEStaticData, FALSE, &_UTF16LEImpl,
0
};
/* UTF-32BE ----------------------------------------------------------------- */
U_CFUNC void
T_UConverter_toUnicode_UTF32_BE(UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
uint32_t ch, i;
/* UTF-8 returns here for only non-offset, this needs to change.*/
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
i = args->converter->toULength; /* restore # of bytes consumed */
ch = args->converter->toUnicodeStatus - 1;/*Stores the previously calculated ch from a previous call*/
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
i = 0;
ch = 0;
morebytes:
while (i < sizeof(uint32_t))
{
if (mySource < sourceLimit)
{
ch = (ch << 8) | (uint8_t)(*mySource);
toUBytes[i++] = (char) *(mySource++);
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
args->converter->toUnicodeStatus = MAXIMUM_UCS4;
}
}
else
{ /* stores a partially calculated target*/
/* + 1 to make 0 a valid character */
args->converter->toUnicodeStatus = ch + 1;
args->converter->toULength = (int8_t) i;
}
goto donefornow;
}
}
if (ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
}
else
{
/* write out the surrogates */
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
else
{
args->source = (const char *) mySource;
args->target = myTarget;
args->converter->invalidCharLength = (int8_t)i;
if (T_UConverter_toUnicode_InvalidChar_Callback(args, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
}
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
/* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
}
U_CFUNC void
T_UConverter_toUnicode_UTF32_BE_OFFSET_LOGIC(UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
int32_t *myOffsets = args->offsets;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
uint32_t ch, i;
int32_t offsetNum = 0;
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
i = args->converter->toULength; /* restore # of bytes consumed */
ch = args->converter->toUnicodeStatus - 1;/*Stores the previously calculated ch from a previous call*/
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
i = 0;
ch = 0;
morebytes:
while (i < sizeof(uint32_t))
{
if (mySource < sourceLimit)
{
ch = (ch << 8) | (uint8_t)(*mySource);
toUBytes[i++] = (char) *(mySource++);
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
args->converter->toUnicodeStatus = MAXIMUM_UCS4;
}
}
else
{ /* stores a partially calculated target*/
/* + 1 to make 0 a valid character */
args->converter->toUnicodeStatus = ch + 1;
args->converter->toULength = (int8_t) i;
}
goto donefornow;
}
}
if (ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
*(myOffsets++) = offsetNum;
}
else
{
/* write out the surrogates */
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
*myOffsets++ = offsetNum;
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
*(myOffsets++) = offsetNum;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
else
{
args->source = (const char *) mySource;
args->target = myTarget;
args->converter->invalidCharLength = (int8_t)i;
args->offsets = myOffsets;
if (T_UConverter_toUnicode_InvalidChar_OffsetCallback(args, offsetNum, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
myOffsets = args->offsets;
}
offsetNum += i;
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
/* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
}
U_CFUNC void
T_UConverter_fromUnicode_UTF32_BE(UConverterFromUnicodeArgs * args,
UErrorCode * err)
{
const UChar *mySource = args->source;
unsigned char *myTarget = (unsigned char *) args->target;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
UChar32 ch, ch2;
unsigned int indexToWrite;
unsigned char temp[sizeof(uint32_t)];
temp[0] = 0;
if (args->converter->fromUnicodeStatus)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (SURROGATE_HIGH_START <= ch && ch < SURROGATE_LOW_START)
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if (SURROGATE_LOW_START <= ch2 && ch2 <= SURROGATE_LOW_END)
{
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
/* ran out of source */
args->converter->fromUnicodeStatus = ch;
break;
}
}
/* We cannot get any larger than 10FFFF because we are coming from UTF-16 */
temp[1] = (uint8_t) (ch >> 16 & 0x1F);
temp[2] = (uint8_t) (ch >> 8); /* unsigned cast implicitly does (ch & FF) */
temp[3] = (uint8_t) (ch); /* unsigned cast implicitly does (ch & FF) */
for (indexToWrite = 0; indexToWrite <= sizeof(uint32_t) - 1; indexToWrite++)
{
if (myTarget < targetLimit)
{
*(myTarget++) = temp[indexToWrite];
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC void
T_UConverter_fromUnicode_UTF32_BE_OFFSET_LOGIC(UConverterFromUnicodeArgs * args,
UErrorCode * err)
{
const UChar *mySource = args->source;
unsigned char *myTarget = (unsigned char *) args->target;
int32_t *myOffsets = args->offsets;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
UChar32 ch, ch2;
int32_t offsetNum = 0;
unsigned int indexToWrite;
unsigned char temp[sizeof(uint32_t)];
temp[0] = 0;
if (args->converter->fromUnicodeStatus)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (SURROGATE_HIGH_START <= ch && ch < SURROGATE_LOW_START)
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if (SURROGATE_LOW_START <= ch2 && ch2 <= SURROGATE_LOW_END)
{
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
/* ran out of source */
args->converter->fromUnicodeStatus = ch;
break;
}
}
/* We cannot get any larger than 10FFFF because we are coming from UTF-16 */
temp[1] = (uint8_t) (ch >> 16 & 0x1F);
temp[2] = (uint8_t) (ch >> 8); /* unsigned cast implicitly does (ch & FF) */
temp[3] = (uint8_t) (ch); /* unsigned cast implicitly does (ch & FF) */
for (indexToWrite = 0; indexToWrite <= sizeof(uint32_t) - 1; indexToWrite++)
{
if (myTarget < targetLimit)
{
*(myTarget++) = temp[indexToWrite];
*(myOffsets++) = offsetNum;
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
offsetNum++;
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC UChar32
T_UConverter_getNextUChar_UTF32_BE(UConverterToUnicodeArgs* args,
UErrorCode* err)
{
UChar myUCharBuf[2];
UChar *myUCharPtr;
const unsigned char *mySource;
UChar32 myUChar;
int32_t length;
while (args->source < args->sourceLimit)
{
if (args->source + 4 > args->sourceLimit)
{
/* got a partial character */
*err = U_TRUNCATED_CHAR_FOUND;
return 0xffff;
}
/* Don't even try to do a direct cast because the value may be on an odd address. */
mySource = (unsigned char *) args->source;
myUChar = (mySource[0] << 24)
| (mySource[1] << 16)
| (mySource[2] << 8)
| (mySource[3]);
args->source = (const char *)(mySource + 4);
if (myUChar <= MAXIMUM_UTF && myUChar >= 0) {
return myUChar;
}
uprv_memcpy(args->converter->invalidCharBuffer, mySource, 4);
args->converter->invalidCharLength = 4;
myUCharPtr = myUCharBuf;
*err = U_ILLEGAL_CHAR_FOUND;
args->target = myUCharPtr;
args->targetLimit = myUCharBuf + 2;
args->converter->fromCharErrorBehaviour(args->converter->toUContext,
args,
(const char *)mySource,
4,
UCNV_ILLEGAL,
err);
if(U_SUCCESS(*err)) {
length = (uint16_t)(args->target - myUCharBuf);
if(length > 0) {
return ucnv_getUChar32KeepOverflow(args->converter, myUCharBuf, length);
}
/* else (callback did not write anything) continue */
} else if(*err == U_BUFFER_OVERFLOW_ERROR) {
*err = U_ZERO_ERROR;
return ucnv_getUChar32KeepOverflow(args->converter, myUCharBuf, 2);
} else {
/* break on error */
/* ### what if a callback set an error but _also_ generated output?! */
return 0xffff;
}
}
/* no input or only skipping callbacks */
*err = U_INDEX_OUTOFBOUNDS_ERROR;
return 0xffff;
}
static const UConverterImpl _UTF32BEImpl = {
UCNV_UTF32_BigEndian,
NULL,
NULL,
NULL,
NULL,
NULL,
T_UConverter_toUnicode_UTF32_BE,
T_UConverter_toUnicode_UTF32_BE_OFFSET_LOGIC,
T_UConverter_fromUnicode_UTF32_BE,
T_UConverter_fromUnicode_UTF32_BE_OFFSET_LOGIC,
T_UConverter_getNextUChar_UTF32_BE,
NULL,
NULL
};
const UConverterStaticData _UTF32BEStaticData = {
sizeof(UConverterStaticData),
"UTF32_BigEndian",
0, /* TODO: Change this number to the UTF-32 CCSID which currently does not exist */
UCNV_IBM, UCNV_UTF32_BigEndian, 4, 4,
{ 0, 0, 0xff, 0xfd }, 4, FALSE, FALSE,
0,
0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
};
const UConverterSharedData _UTF32BEData = {
sizeof(UConverterSharedData), ~((uint32_t) 0),
NULL, NULL, &_UTF32BEStaticData, FALSE, &_UTF32BEImpl,
0
};
/* UTF-32LE ---------------------------------------------------------- */
U_CFUNC void
T_UConverter_toUnicode_UTF32_LE(UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
uint32_t ch, i;
/* UTF-8 returns here for only non-offset, this needs to change.*/
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
i = args->converter->toULength; /* restore # of bytes consumed */
/* Stores the previously calculated ch from a previous call*/
ch = args->converter->toUnicodeStatus - 1;
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
i = 0;
ch = 0;
morebytes:
while (i < sizeof(uint32_t))
{
if (mySource < sourceLimit)
{
ch |= ((uint8_t)(*mySource)) << (i * 8);
toUBytes[i++] = (char) *(mySource++);
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
args->converter->toUnicodeStatus = 0;
}
}
else
{ /* stores a partially calculated target*/
/* + 1 to make 0 a valid character */
args->converter->toUnicodeStatus = ch + 1;
args->converter->toULength = (int8_t) i;
}
goto donefornow;
}
}
if (ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
}
else
{
/* write out the surrogates */
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
else
{
args->source = (const char *) mySource;
args->target = myTarget;
args->converter->invalidCharLength = (int8_t)i;
if (T_UConverter_toUnicode_InvalidChar_Callback(args, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
}
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
/* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
}
U_CFUNC void
T_UConverter_toUnicode_UTF32_LE_OFFSET_LOGIC(UConverterToUnicodeArgs * args,
UErrorCode * err)
{
const unsigned char *mySource = (unsigned char *) args->source;
UChar *myTarget = args->target;
int32_t *myOffsets = args->offsets;
const unsigned char *sourceLimit = (unsigned char *) args->sourceLimit;
const UChar *targetLimit = args->targetLimit;
unsigned char *toUBytes = args->converter->toUBytes;
uint32_t ch, i;
int32_t offsetNum = 0;
/* UTF-8 returns here for only non-offset, this needs to change.*/
if (args->converter->toUnicodeStatus && myTarget < targetLimit)
{
i = args->converter->toULength; /* restore # of bytes consumed */
/* Stores the previously calculated ch from a previous call*/
ch = args->converter->toUnicodeStatus - 1;
args->converter->toUnicodeStatus = 0;
goto morebytes;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
i = 0;
ch = 0;
morebytes:
while (i < sizeof(uint32_t))
{
if (mySource < sourceLimit)
{
ch |= ((uint8_t)(*mySource)) << (i * 8);
toUBytes[i++] = (char) *(mySource++);
}
else
{
if (args->flush)
{
if (U_SUCCESS(*err))
{
*err = U_TRUNCATED_CHAR_FOUND;
args->converter->toUnicodeStatus = 0;
}
}
else
{ /* stores a partially calculated target*/
/* + 1 to make 0 a valid character */
args->converter->toUnicodeStatus = ch + 1;
args->converter->toULength = (int8_t) i;
}
goto donefornow;
}
}
if (ch <= MAXIMUM_UTF)
{
/* Normal valid byte when the loop has not prematurely terminated (i < inBytes) */
if (ch <= MAXIMUM_UCS2)
{
/* fits in 16 bits */
*(myTarget++) = (UChar) ch;
*(myOffsets++) = offsetNum;
}
else
{
/* write out the surrogates */
ch -= HALF_BASE;
*(myTarget++) = (UChar) ((ch >> HALF_SHIFT) + SURROGATE_HIGH_START);
ch = (ch & HALF_MASK) + SURROGATE_LOW_START;
if (myTarget < targetLimit)
{
*(myTarget++) = (UChar)ch;
*(myOffsets++) = offsetNum;
}
else
{
/* Put in overflow buffer (not handled here) */
args->converter->UCharErrorBuffer[0] = (UChar) ch;
args->converter->UCharErrorBufferLength = 1;
*err = U_BUFFER_OVERFLOW_ERROR;
break;
}
}
}
else
{
args->source = (const char *) mySource;
args->target = myTarget;
args->converter->invalidCharLength = (int8_t)i;
args->offsets = myOffsets;
if (T_UConverter_toUnicode_InvalidChar_OffsetCallback(args, offsetNum, err))
{
/* Stop if the error wasn't handled */
break;
}
args->converter->invalidCharLength = 0;
mySource = (unsigned char *) args->source;
myTarget = args->target;
myOffsets = args->offsets;
}
offsetNum += i;
}
donefornow:
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
/* End of target buffer */
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = myTarget;
args->source = (const char *) mySource;
}
U_CFUNC void
T_UConverter_fromUnicode_UTF32_LE(UConverterFromUnicodeArgs * args,
UErrorCode * err)
{
const UChar *mySource = args->source;
unsigned char *myTarget = (unsigned char *) args->target;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
UChar32 ch, ch2;
unsigned int indexToWrite;
unsigned char temp[sizeof(uint32_t)];
temp[3] = 0;
if (args->converter->fromUnicodeStatus)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (SURROGATE_HIGH_START <= ch && ch < SURROGATE_LOW_START)
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if (SURROGATE_LOW_START <= ch2 && ch2 <= SURROGATE_LOW_END)
{
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
/* ran out of source */
args->converter->fromUnicodeStatus = ch;
break;
}
}
/* We cannot get any larger than 10FFFF because we are coming from UTF-16 */
temp[2] = (uint8_t) (ch >> 16 & 0x1F);
temp[1] = (uint8_t) (ch >> 8); /* unsigned cast implicitly does (ch & FF) */
temp[0] = (uint8_t) (ch); /* unsigned cast implicitly does (ch & FF) */
for (indexToWrite = 0; indexToWrite <= sizeof(uint32_t) - 1; indexToWrite++)
{
if (myTarget < targetLimit)
{
*(myTarget++) = temp[indexToWrite];
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC void
T_UConverter_fromUnicode_UTF32_LE_OFFSET_LOGIC(UConverterFromUnicodeArgs * args,
UErrorCode * err)
{
const UChar *mySource = args->source;
unsigned char *myTarget = (unsigned char *) args->target;
int32_t *myOffsets = args->offsets;
const UChar *sourceLimit = args->sourceLimit;
const unsigned char *targetLimit = (unsigned char *) args->targetLimit;
UChar32 ch, ch2;
unsigned int indexToWrite;
unsigned char temp[sizeof(uint32_t)];
int32_t offsetNum = 0;
temp[3] = 0;
if (args->converter->fromUnicodeStatus)
{
ch = args->converter->fromUnicodeStatus;
args->converter->fromUnicodeStatus = 0;
goto lowsurogate;
}
while (mySource < sourceLimit && myTarget < targetLimit)
{
ch = *(mySource++);
if (SURROGATE_HIGH_START <= ch && ch < SURROGATE_LOW_START)
{
lowsurogate:
if (mySource < sourceLimit)
{
ch2 = *mySource;
if (SURROGATE_LOW_START <= ch2 && ch2 <= SURROGATE_LOW_END)
{
ch = ((ch - SURROGATE_HIGH_START) << HALF_SHIFT) + ch2 + SURROGATE_LOW_BASE;
mySource++;
}
}
else if (!args->flush)
{
/* ran out of source */
args->converter->fromUnicodeStatus = ch;
break;
}
}
/* We cannot get any larger than 10FFFF because we are coming from UTF-16 */
temp[2] = (uint8_t) (ch >> 16 & 0x1F);
temp[1] = (uint8_t) (ch >> 8); /* unsigned cast implicitly does (ch & FF) */
temp[0] = (uint8_t) (ch); /* unsigned cast implicitly does (ch & FF) */
for (indexToWrite = 0; indexToWrite <= sizeof(uint32_t) - 1; indexToWrite++)
{
if (myTarget < targetLimit)
{
*(myTarget++) = temp[indexToWrite];
*(myOffsets++) = offsetNum;
}
else
{
args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = temp[indexToWrite];
*err = U_BUFFER_OVERFLOW_ERROR;
}
}
offsetNum++;
}
if (mySource < sourceLimit && myTarget >= targetLimit && U_SUCCESS(*err))
{
*err = U_BUFFER_OVERFLOW_ERROR;
}
args->target = (char *) myTarget;
args->source = mySource;
}
U_CFUNC UChar32
T_UConverter_getNextUChar_UTF32_LE(UConverterToUnicodeArgs* args,
UErrorCode* err)
{
UChar myUCharBuf[2];
UChar *myUCharPtr;
const unsigned char *mySource;
UChar32 myUChar;
int32_t length;
while (args->source < args->sourceLimit)
{
if (args->source + 4 > args->sourceLimit)
{
/* got a partial character */
*err = U_TRUNCATED_CHAR_FOUND;
return 0xffff;
}
/* Don't even try to do a direct cast because the value may be on an odd address. */
mySource = (unsigned char *) args->source;
myUChar = (mySource[0])
| (mySource[1] << 8)
| (mySource[2] << 16)
| (mySource[3] << 24);
args->source = (const char *)(mySource + 4);
if (myUChar <= MAXIMUM_UTF && myUChar >= 0) {
return myUChar;
}
uprv_memcpy(args->converter->invalidCharBuffer, mySource, 4);
args->converter->invalidCharLength = 4;
myUCharPtr = myUCharBuf;
*err = U_ILLEGAL_CHAR_FOUND;
args->target = myUCharPtr;
args->targetLimit = myUCharBuf + 2;
args->converter->fromCharErrorBehaviour(args->converter->toUContext,
args,
(const char *)mySource,
4,
UCNV_ILLEGAL,
err);
if(U_SUCCESS(*err)) {
length = (uint16_t)(args->target - myUCharBuf);
if(length > 0) {
return ucnv_getUChar32KeepOverflow(args->converter, myUCharBuf, length);
}
/* else (callback did not write anything) continue */
} else if(*err == U_BUFFER_OVERFLOW_ERROR) {
*err = U_ZERO_ERROR;
return ucnv_getUChar32KeepOverflow(args->converter, myUCharBuf, 2);
} else {
/* break on error */
/* ### what if a callback set an error but _also_ generated output?! */
return 0xffff;
}
}
/* no input or only skipping callbacks */
*err = U_INDEX_OUTOFBOUNDS_ERROR;
return 0xffff;
}
static const UConverterImpl _UTF32LEImpl = {
UCNV_UTF32_LittleEndian,
NULL,
NULL,
NULL,
NULL,
NULL,
T_UConverter_toUnicode_UTF32_LE,
T_UConverter_toUnicode_UTF32_LE_OFFSET_LOGIC,
T_UConverter_fromUnicode_UTF32_LE,
T_UConverter_fromUnicode_UTF32_LE_OFFSET_LOGIC,
T_UConverter_getNextUChar_UTF32_LE,
NULL,
NULL
};
const UConverterStaticData _UTF32LEStaticData = {
sizeof(UConverterStaticData),
"UTF32_LittleEndian",
0, /* TODO: Change this number to the UTF-32 CCSID which currently does not exist */
UCNV_IBM, UCNV_UTF32_BigEndian, 4, 4,
{ 0xfd, 0xff, 0, 0 }, 4, FALSE, FALSE,
0,
0,
{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
};
const UConverterSharedData _UTF32LEData = {
sizeof(UConverterSharedData), ~((uint32_t) 0),
NULL, NULL, &_UTF32LEStaticData, FALSE, &_UTF32LEImpl,
0
};
/* UTF-7 -------------------------------------------------------------------- */
/* ### TODO: in the and user guide, document version option (=1 for escaping set O characters) */
/*
* UTF-7 is a stateful encoding of Unicode, somewhat like UTF7.
* It is defined in RFC 2152 http://www.imc.org/rfc2152 .
* It was intended for use in Internet email systems, using in its bytewise
* encoding only a subset of 7-bit US-ASCII.
* UTF-7 is deprecated in favor of UTF-8/16/32 and UTF7, but still
* occasionally used.
*
* For converting Unicode to UTF-7, the RFC allows to encode some US-ASCII
* characters directly or in base64. Especially, the characters in set O
* as defined in the RFC (see below) may be encoded directly but are not
* allowed in, e.g., email headers.
* By default, the ICU UTF-7 converter encodes set O directly.
* By choosing the option "version=1", set O will be escaped instead.
* For example:
* utf7Converter=ucnv_open("UTF-7,version=1");
*/
/*
* Tests for US-ASCII characters belonging to character classes
* defined in UTF-7.
*
* Set D (directly encoded characters) consists of the following
* characters: the upper and lower case letters A through Z
* and a through z, the 10 digits 0-9, and the following nine special
* characters (note that "+" and "=" are omitted):
* '(),-./:?
*
* Set O (optional direct characters) consists of the following
* characters (note that "\" and "~" are omitted):
* !"#$%&*;<=>@[]^_`{|}
*
* According to the rules in RFC 2152, the byte values for the following
* US-ASCII characters are not used in UTF-7 and are therefore illegal:
* - all C0 control codes except for CR LF TAB
* - BACKSLASH
* - TILDE
* - DEL
* - all codes beyond US-ASCII, i.e. all >127
*/
#define inSetD(c) \
((uint8_t)((c)-97)<26 || (uint8_t)((c)-65)<26 || /* letters */ \
(uint8_t)((c)-48)<10 || /* digits */ \
(uint8_t)((c)-39)<3 || /* '() */ \
(uint8_t)((c)-44)<4 || /* ,-./ */ \
(c)==58 || (c)==63 /* :? */ \
)
#define inSetO(c) \
((uint8_t)((c)-33)<6 || /* !"#$%& */ \
(uint8_t)((c)-59)<4 || /* ;<=> */ \
(uint8_t)((c)-93)<4 || /* ]^_` */ \
(uint8_t)((c)-123)<3 || /* {|} */ \
(c)==42 || (c)==64 || (c)==91 /* *@[ */ \
)
#define isCRLFTAB(c) ((c)==13 || (c)==10 || (c)==9)
#define isCRLFSPTAB(c) ((c)==32 || (c)==13 || (c)==10 || (c)==9)
#define PLUS 43
#define MINUS 45
#define BACKSLASH 92
#define TILDE 126
/* legal byte values: all US-ASCII graphic characters from space to before tilde, and CR LF TAB */
#define isLegalUTF7(c) (((uint8_t)((c)-32)<94 && (c)!=BACKSLASH) || isCRLFTAB(c))
/* encode directly sets D and O and CR LF SP TAB */
static const UBool encodeDirectlyMaximum[128]={
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 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, 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, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 0, 0
};
/* encode directly set D and CR LF SP TAB but not set O */
static const UBool encodeDirectlyRestricted[128]={
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,
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, 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, 0, 0, 0, 0, 0
};
static const uint8_t
toBase64[64]={
/* A-Z */
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77,
78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
/* a-z */
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
/* 0-9 */
48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
/* +/ */
43, 47
};
static const int8_t
fromBase64[128]={
/* C0 controls, -1 for legal ones (CR LF TAB), -3 for illegal ones */
-3, -3, -3, -3, -3, -3, -3, -3, -3, -1, -1, -3, -3, -1, -3, -3,
-3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
/* general punctuation with + and / and a special value (-2) for - */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -2, -1, 63,
/* digits */
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
/* A-Z */
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -3, -1, -1, -1,
/* a-z */
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -3, -3
};
/*
* converter status values:
*
* toUnicodeStatus:
* 24 inDirectMode (boolean)
* 23..16 base64Counter (-1..7)
* 15..0 bits (up to 14 bits incoming base64)
*
* fromUnicodeStatus:
* 31..28 version (0: set O direct 1: set O escaped)
* 24 inDirectMode (boolean)
* 23..16 base64Counter (0..2)
* 7..0 bits (6 bits outgoing base64)
*
*/
U_CFUNC void
_UTF7Reset(UConverter *cnv, UConverterResetChoice choice) {
if(choice<=UCNV_RESET_TO_UNICODE) {
/* reset toUnicode */
cnv->toUnicodeStatus=0x1000000; /* inDirectMode=TRUE */
cnv->toULength=0;
}