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Diffstat (limited to 'mp/src/tier1/strtools_unicode.cpp')
| -rw-r--r-- | mp/src/tier1/strtools_unicode.cpp | 572 |
1 files changed, 572 insertions, 0 deletions
diff --git a/mp/src/tier1/strtools_unicode.cpp b/mp/src/tier1/strtools_unicode.cpp new file mode 100644 index 00000000..77685ec3 --- /dev/null +++ b/mp/src/tier1/strtools_unicode.cpp @@ -0,0 +1,572 @@ +//========= Copyright Valve Corporation, All rights reserved. ============// +// +// Purpose: +// +// $NoKeywords: $ +// +//=============================================================================// + +#include <limits.h> +#include "tier0/dbg.h" +#include "tier1/strtools.h" + +// This code was copied from steam +#define DbgAssert Assert + +//----------------------------------------------------------------------------- +// Purpose: determine if a uchar32 represents a valid Unicode code point +//----------------------------------------------------------------------------- +bool Q_IsValidUChar32( uchar32 uVal ) +{ + // Values > 0x10FFFF are explicitly invalid; ditto for UTF-16 surrogate halves, + // values ending in FFFE or FFFF, or values in the 0x00FDD0-0x00FDEF reserved range + return ( uVal < 0x110000u ) && ( (uVal - 0x00D800u) > 0x7FFu ) && ( (uVal & 0xFFFFu) < 0xFFFEu ) && ( ( uVal - 0x00FDD0u ) > 0x1Fu ); +} + +//----------------------------------------------------------------------------- +// Purpose: return number of UTF-8 bytes required to encode a Unicode code point +//----------------------------------------------------------------------------- +int Q_UChar32ToUTF8Len( uchar32 uVal ) +{ + DbgAssert( Q_IsValidUChar32( uVal ) ); + if ( uVal <= 0x7F ) + return 1; + if ( uVal <= 0x7FF ) + return 2; + if ( uVal <= 0xFFFF ) + return 3; + return 4; +} + + +//----------------------------------------------------------------------------- +// Purpose: return number of UTF-16 elements required to encode a Unicode code point +//----------------------------------------------------------------------------- +int Q_UChar32ToUTF16Len( uchar32 uVal ) +{ + DbgAssert( Q_IsValidUChar32( uVal ) ); + if ( uVal <= 0xFFFF ) + return 1; + return 2; +} + + +//----------------------------------------------------------------------------- +// Purpose: encode Unicode code point as UTF-8, returns number of bytes written +//----------------------------------------------------------------------------- +int Q_UChar32ToUTF8( uchar32 uVal, char *pUTF8Out ) +{ + DbgAssert( Q_IsValidUChar32( uVal ) ); + if ( uVal <= 0x7F ) + { + pUTF8Out[0] = (unsigned char) uVal; + return 1; + } + if ( uVal <= 0x7FF ) + { + pUTF8Out[0] = (unsigned char)(uVal >> 6) | 0xC0; + pUTF8Out[1] = (unsigned char)(uVal & 0x3F) | 0x80; + return 2; + } + if ( uVal <= 0xFFFF ) + { + pUTF8Out[0] = (unsigned char)(uVal >> 12) | 0xE0; + pUTF8Out[1] = (unsigned char)((uVal >> 6) & 0x3F) | 0x80; + pUTF8Out[2] = (unsigned char)(uVal & 0x3F) | 0x80; + return 3; + } + pUTF8Out[0] = (unsigned char)((uVal >> 18) & 0x07) | 0xF0; + pUTF8Out[1] = (unsigned char)((uVal >> 12) & 0x3F) | 0x80; + pUTF8Out[2] = (unsigned char)((uVal >> 6) & 0x3F) | 0x80; + pUTF8Out[3] = (unsigned char)(uVal & 0x3F) | 0x80; + return 4; +} + +//----------------------------------------------------------------------------- +// Purpose: encode Unicode code point as UTF-16, returns number of elements written +//----------------------------------------------------------------------------- +int Q_UChar32ToUTF16( uchar32 uVal, uchar16 *pUTF16Out ) +{ + DbgAssert( Q_IsValidUChar32( uVal ) ); + if ( uVal <= 0xFFFF ) + { + pUTF16Out[0] = (uchar16) uVal; + return 1; + } + uVal -= 0x010000; + pUTF16Out[0] = (uchar16)(uVal >> 10) | 0xD800; + pUTF16Out[1] = (uchar16)(uVal & 0x3FF) | 0xDC00; + return 2; +} + + +// Decode one character from a UTF-8 encoded string. Treats 6-byte CESU-8 sequences +// as a single character, as if they were a correctly-encoded 4-byte UTF-8 sequence. +int Q_UTF8ToUChar32( const char *pUTF8_, uchar32 &uValueOut, bool &bErrorOut ) +{ + const uint8 *pUTF8 = (const uint8 *)pUTF8_; + + int nBytes = 1; + uint32 uValue = pUTF8[0]; + uint32 uMinValue = 0; + + // 0....... single byte + if ( uValue < 0x80 ) + goto decodeFinishedNoCheck; + + // Expecting at least a two-byte sequence with 0xC0 <= first <= 0xF7 (110...... and 11110...) + if ( (uValue - 0xC0u) > 0x37u || ( pUTF8[1] & 0xC0 ) != 0x80 ) + goto decodeError; + + uValue = (uValue << 6) - (0xC0 << 6) + pUTF8[1] - 0x80; + nBytes = 2; + uMinValue = 0x80; + + // 110..... two-byte lead byte + if ( !( uValue & (0x20 << 6) ) ) + goto decodeFinished; + + // Expecting at least a three-byte sequence + if ( ( pUTF8[2] & 0xC0 ) != 0x80 ) + goto decodeError; + + uValue = (uValue << 6) - (0x20 << 12) + pUTF8[2] - 0x80; + nBytes = 3; + uMinValue = 0x800; + + // 1110.... three-byte lead byte + if ( !( uValue & (0x10 << 12) ) ) + goto decodeFinishedMaybeCESU8; + + // Expecting a four-byte sequence, longest permissible in UTF-8 + if ( ( pUTF8[3] & 0xC0 ) != 0x80 ) + goto decodeError; + + uValue = (uValue << 6) - (0x10 << 18) + pUTF8[3] - 0x80; + nBytes = 4; + uMinValue = 0x10000; + + // 11110... four-byte lead byte. fall through to finished. + +decodeFinished: + if ( uValue >= uMinValue && Q_IsValidUChar32( uValue ) ) + { +decodeFinishedNoCheck: + uValueOut = uValue; + bErrorOut = false; + return nBytes; + } +decodeError: + uValueOut = '?'; + bErrorOut = true; + return nBytes; + +decodeFinishedMaybeCESU8: + // Do we have a full UTF-16 surrogate pair that's been UTF-8 encoded afterwards? + // That is, do we have 0xD800-0xDBFF followed by 0xDC00-0xDFFF? If so, decode it all. + if ( ( uValue - 0xD800u ) < 0x400u && pUTF8[3] == 0xED && (uint8)( pUTF8[4] - 0xB0 ) < 0x10 && ( pUTF8[5] & 0xC0 ) == 0x80 ) + { + uValue = 0x10000 + ( ( uValue - 0xD800u ) << 10 ) + ( (uint8)( pUTF8[4] - 0xB0 ) << 6 ) + pUTF8[5] - 0x80; + nBytes = 6; + uMinValue = 0x10000; + } + goto decodeFinished; +} + +// Decode one character from a UTF-16 encoded string. +int Q_UTF16ToUChar32( const uchar16 *pUTF16, uchar32 &uValueOut, bool &bErrorOut ) +{ + if ( Q_IsValidUChar32( pUTF16[0] ) ) + { + uValueOut = pUTF16[0]; + bErrorOut = false; + return 1; + } + else if ( (pUTF16[0] - 0xD800u) < 0x400u && (pUTF16[1] - 0xDC00u) < 0x400u ) + { + // Valid surrogate pair, but maybe not encoding a valid Unicode code point... + uchar32 uVal = 0x010000 + ((pUTF16[0] - 0xD800u) << 10) + (pUTF16[1] - 0xDC00); + if ( Q_IsValidUChar32( uVal ) ) + { + uValueOut = uVal; + bErrorOut = false; + return 2; + } + else + { + uValueOut = '?'; + bErrorOut = true; + return 2; + } + } + else + { + uValueOut = '?'; + bErrorOut = true; + return 1; + } +} + +namespace // internal use only +{ + // Identity transformations and validity tests for use with Q_UnicodeConvertT + int Q_UTF32ToUChar32( const uchar32 *pUTF32, uchar32 &uVal, bool &bErr ) + { + bErr = !Q_IsValidUChar32( *pUTF32 ); + uVal = bErr ? '?' : *pUTF32; + return 1; + } + + int Q_UChar32ToUTF32Len( uchar32 uVal ) + { + return 1; + } + + int Q_UChar32ToUTF32( uchar32 uVal, uchar32 *pUTF32 ) + { + *pUTF32 = uVal; + return 1; + } + + // A generic Unicode processing loop: decode one character from input to uchar32, handle errors, encode uchar32 to output + template < typename SrcType, typename DstType, bool bStopAtNull, int (&DecodeSrc)( const SrcType*, uchar32&, bool& ), int (&EncodeDstLen)( uchar32 ), int (&EncodeDst)( uchar32, DstType* ) > + int Q_UnicodeConvertT( const SrcType *pIn, int nInChars, DstType *pOut, int nOutBytes, EStringConvertErrorPolicy ePolicy ) + { + if ( !pIn ) + { + // For now, assert and return 0. Once these are cleaned out a bit + // we should remove this return and just leave in the assert... + AssertMsg( pIn, "We shouldn't be passing in NULL!" ); + return 0; + } + + int nOut = 0; + + if ( !pOut ) + { + while ( bStopAtNull ? ( *pIn ) : ( nInChars-- > 0 ) ) + { + uchar32 uVal; + // Initialize in order to avoid /analyze warnings. + bool bErr = false; + pIn += DecodeSrc( pIn, uVal, bErr ); + nOut += EncodeDstLen( uVal ); + if ( bErr ) + { +#ifdef _DEBUG + AssertMsg( !(ePolicy & _STRINGCONVERTFLAG_ASSERT), "invalid Unicode byte sequence" ); +#endif + if ( ePolicy & _STRINGCONVERTFLAG_SKIP ) + { + nOut -= EncodeDstLen( uVal ); + } + else if ( ePolicy & _STRINGCONVERTFLAG_FAIL ) + { + pOut[0] = 0; + return 0; + } + } + } + } + else + { + int nOutElems = nOutBytes / sizeof( DstType ); + if ( nOutElems <= 0 ) + return 0; + + int nMaxOut = nOutElems - 1; + while ( bStopAtNull ? ( *pIn ) : ( nInChars-- > 0 ) ) + { + uchar32 uVal; + // Initialize in order to avoid /analyze warnings. + bool bErr = false; + pIn += DecodeSrc( pIn, uVal, bErr ); + if ( nOut + EncodeDstLen( uVal ) > nMaxOut ) + break; + nOut += EncodeDst( uVal, pOut + nOut ); + if ( bErr ) + { +#ifdef _DEBUG + AssertMsg( !(ePolicy & _STRINGCONVERTFLAG_ASSERT), "invalid Unicode byte sequence" ); +#endif + if ( ePolicy & _STRINGCONVERTFLAG_SKIP ) + { + nOut -= EncodeDstLen( uVal ); + } + else if ( ePolicy & _STRINGCONVERTFLAG_FAIL ) + { + pOut[0] = 0; + return 0; + } + } + } + pOut[nOut] = 0; + } + + return (nOut + 1) * sizeof( DstType ); + } +} + +//----------------------------------------------------------------------------- +// Purpose: Returns true if UTF-8 string contains invalid sequences. +//----------------------------------------------------------------------------- +bool Q_UnicodeValidate( const char *pUTF8 ) +{ + bool bError = false; + while ( *pUTF8 ) + { + uchar32 uVal; + // Our UTF-8 decoder silently fixes up 6-byte CESU-8 (improperly re-encoded UTF-16) sequences. + // However, these are technically not valid UTF-8. So if we eat 6 bytes at once, it's an error. + int nCharSize = Q_UTF8ToUChar32( pUTF8, uVal, bError ); + if ( bError || nCharSize == 6 ) + return false; + pUTF8 += nCharSize; + } + return true; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns true if UTF-16 string contains invalid sequences. +//----------------------------------------------------------------------------- +bool Q_UnicodeValidate( const uchar16 *pUTF16 ) +{ + bool bError = false; + while ( *pUTF16 ) + { + uchar32 uVal; + pUTF16 += Q_UTF16ToUChar32( pUTF16, uVal, bError ); + if ( bError ) + return false; + } + return true; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns true if UTF-32 string contains invalid sequences. +//----------------------------------------------------------------------------- +bool Q_UnicodeValidate( const uchar32 *pUTF32 ) +{ + while ( *pUTF32 ) + { + if ( !Q_IsValidUChar32( *pUTF32++ ) ) + return false; + ++pUTF32; + } + return true; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns number of Unicode code points (aka glyphs / characters) encoded in the UTF-8 string +//----------------------------------------------------------------------------- +int Q_UnicodeLength( const char *pUTF8 ) +{ + int nChars = 0; + while ( *pUTF8 ) + { + bool bError; + uchar32 uVal; + pUTF8 += Q_UTF8ToUChar32( pUTF8, uVal, bError ); + ++nChars; + } + return nChars; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns number of Unicode code points (aka glyphs / characters) encoded in the UTF-16 string +//----------------------------------------------------------------------------- +int Q_UnicodeLength( const uchar16 *pUTF16 ) +{ + int nChars = 0; + while ( *pUTF16 ) + { + bool bError; + uchar32 uVal; + pUTF16 += Q_UTF16ToUChar32( pUTF16, uVal, bError ); + ++nChars; + } + return nChars; +} + +//----------------------------------------------------------------------------- +// Purpose: Returns number of Unicode code points (aka glyphs / characters) encoded in the UTF-32 string +//----------------------------------------------------------------------------- +int Q_UnicodeLength( const uchar32 *pUTF32 ) +{ + int nChars = 0; + while ( *pUTF32++ ) + ++nChars; + return nChars; +} + +//----------------------------------------------------------------------------- +// Purpose: Advance a UTF-8 string pointer by a certain number of Unicode code points, stopping at end of string +//----------------------------------------------------------------------------- +char *Q_UnicodeAdvance( char *pUTF8, int nChars ) +{ + while ( nChars > 0 && *pUTF8 ) + { + uchar32 uVal; + bool bError; + pUTF8 += Q_UTF8ToUChar32( pUTF8, uVal, bError ); + --nChars; + } + return pUTF8; +} + +//----------------------------------------------------------------------------- +// Purpose: Advance a UTF-16 string pointer by a certain number of Unicode code points, stopping at end of string +//----------------------------------------------------------------------------- +uchar16 *Q_UnicodeAdvance( uchar16 *pUTF16, int nChars ) +{ + while ( nChars > 0 && *pUTF16 ) + { + uchar32 uVal; + bool bError; + pUTF16 += Q_UTF16ToUChar32( pUTF16, uVal, bError ); + --nChars; + } + return pUTF16; +} + +//----------------------------------------------------------------------------- +// Purpose: Advance a UTF-32 string pointer by a certain number of Unicode code points, stopping at end of string +//----------------------------------------------------------------------------- +uchar32 *Q_UnicodeAdvance( uchar32 *pUTF32, int nChars ) +{ + while ( nChars > 0 && *pUTF32 ) + { + ++pUTF32; + --nChars; + } + return pUTF32; +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF8ToUTF16( const char *pUTF8, uchar16 *pUTF16, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< char, uchar16, true, Q_UTF8ToUChar32, Q_UChar32ToUTF16Len, Q_UChar32ToUTF16 >( pUTF8, 0, pUTF16, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF8ToUTF32( const char *pUTF8, uchar32 *pUTF32, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< char, uchar32, true, Q_UTF8ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF8, 0, pUTF32, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF16ToUTF8( const uchar16 *pUTF16, char *pUTF8, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar16, char, true, Q_UTF16ToUChar32, Q_UChar32ToUTF8Len, Q_UChar32ToUTF8 >( pUTF16, 0, pUTF8, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF16ToUTF32( const uchar16 *pUTF16, uchar32 *pUTF32, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar16, uchar32, true, Q_UTF16ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF16, 0, pUTF32, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF32ToUTF8( const uchar32 *pUTF32, char *pUTF8, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, char, true, Q_UTF32ToUChar32, Q_UChar32ToUTF8Len, Q_UChar32ToUTF8 >( pUTF32, 0, pUTF8, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF32ToUTF16( const uchar32 *pUTF32, uchar16 *pUTF16, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, uchar16, true, Q_UTF32ToUChar32, Q_UChar32ToUTF16Len, Q_UChar32ToUTF16 >( pUTF32, 0, pUTF16, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF32ToUTF32( const uchar32 *pUTF32Source, uchar32 *pUTF32Dest, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, uchar32, true, Q_UTF32ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF32Source, 0, pUTF32Dest, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF8CharsToUTF16( const char *pUTF8, int nElements, uchar16 *pUTF16, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< char, uchar16, false, Q_UTF8ToUChar32, Q_UChar32ToUTF16Len, Q_UChar32ToUTF16 >( pUTF8, nElements, pUTF16, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF8CharsToUTF32( const char *pUTF8, int nElements, uchar32 *pUTF32, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< char, uchar32, false, Q_UTF8ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF8, nElements, pUTF32, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF16CharsToUTF8( const uchar16 *pUTF16, int nElements, char *pUTF8, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar16, char, false, Q_UTF16ToUChar32, Q_UChar32ToUTF8Len, Q_UChar32ToUTF8 >( pUTF16, nElements, pUTF8, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF16CharsToUTF32( const uchar16 *pUTF16, int nElements, uchar32 *pUTF32, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar16, uchar32, false, Q_UTF16ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF16, nElements, pUTF32, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF32CharsToUTF8( const uchar32 *pUTF32, int nElements, char *pUTF8, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, char, false, Q_UTF32ToUChar32, Q_UChar32ToUTF8Len, Q_UChar32ToUTF8 >( pUTF32, nElements, pUTF8, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Perform conversion. Returns number of *bytes* required if output pointer is NULL. +//----------------------------------------------------------------------------- +int Q_UTF32CharsToUTF16( const uchar32 *pUTF32, int nElements, uchar16 *pUTF16, int cubDestSizeInBytes, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, uchar16, false, Q_UTF32ToUChar32, Q_UChar32ToUTF16Len, Q_UChar32ToUTF16 >( pUTF32, nElements, pUTF16, cubDestSizeInBytes, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Repair a UTF-8 string by removing or replacing invalid seqeuences. Returns non-zero on success. +//----------------------------------------------------------------------------- +int Q_UnicodeRepair( char *pUTF8, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< char, char, true, Q_UTF8ToUChar32, Q_UChar32ToUTF8Len, Q_UChar32ToUTF8 >( pUTF8, 0, pUTF8, INT_MAX, ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Repair a UTF-16 string by removing or replacing invalid seqeuences. Returns non-zero on success. +//----------------------------------------------------------------------------- +int Q_UnicodeRepair( uchar16 *pUTF16, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar16, uchar16, true, Q_UTF16ToUChar32, Q_UChar32ToUTF16Len, Q_UChar32ToUTF16 >( pUTF16, 0, pUTF16, INT_MAX/sizeof(uchar16), ePolicy ); +} + +//----------------------------------------------------------------------------- +// Purpose: Repair a UTF-32 string by removing or replacing invalid seqeuences. Returns non-zero on success. +//----------------------------------------------------------------------------- +int Q_UnicodeRepair( uchar32 *pUTF32, EStringConvertErrorPolicy ePolicy ) +{ + return Q_UnicodeConvertT< uchar32, uchar32, true, Q_UTF32ToUChar32, Q_UChar32ToUTF32Len, Q_UChar32ToUTF32 >( pUTF32, 0, pUTF32, INT_MAX/sizeof(uchar32), ePolicy ); +} + |