mirror of
https://github.com/nillerusr/source-engine.git
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316 lines
9.6 KiB
C++
316 lines
9.6 KiB
C++
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#include "tier0/dbg.h"
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#include "vstdlib/vstrtools.h"
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#if defined( _WIN32 ) && !defined( _X360 )
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#include <windows.h>
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#endif
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#if defined(POSIX) && !defined(_PS3)
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#include <iconv.h>
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#endif
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#ifdef _PS3
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#include <cell/sysmodule.h>
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#include <cell/l10n.h>
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class DummyInitL10N
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{
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public:
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DummyInitL10N()
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{
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int ret = cellSysmoduleLoadModule( CELL_SYSMODULE_L10N );
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if( ret != CELL_OK )
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{
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Warning( "Cannot initialize l10n, unicode services will not work. Error %d\n", ret );
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}
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}
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~DummyInitL10N()
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{
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cellSysmoduleUnloadModule( CELL_SYSMODULE_L10N );
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}
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}s_dummyInitL10N;
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#endif
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//-----------------------------------------------------------------------------
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// Purpose: Converts a UTF8 string into a unicode string
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//-----------------------------------------------------------------------------
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int V_UTF8ToUnicode( const char *pUTF8, wchar_t *pwchDest, int cubDestSizeInBytes )
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{
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if ( !pUTF8 )
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return 0;
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AssertValidStringPtr(pUTF8);
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AssertValidWritePtr(pwchDest);
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pwchDest[0] = 0;
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#ifdef _WIN32
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int cchResult = MultiByteToWideChar( CP_UTF8, 0, pUTF8, -1, pwchDest, cubDestSizeInBytes / sizeof(wchar_t) );
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#elif defined( _PS3 )
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size_t cchResult = cubDestSizeInBytes / sizeof( uint16 ), cchSrc = V_strlen( pUTF8 ) + 1;
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L10nResult result = UTF8stoUCS2s( ( const uint8 *) pUTF8, &cchSrc, ( uint16 * ) pwchDest, &cchResult );
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Assert( result == ConversionOK );
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cchResult *= sizeof( uint16 );
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#elif POSIX
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iconv_t conv_t = iconv_open( "UTF-32LE", "UTF-8" );
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int cchResult = -1;
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size_t nLenUnicde = cubDestSizeInBytes;
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size_t nMaxUTF8 = strlen(pUTF8) + 1;
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char *pIn = (char *)pUTF8;
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char *pOut = (char *)pwchDest;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nMaxUTF8, &pOut, &nLenUnicde );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = nMaxUTF8;
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}
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#endif
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pwchDest[(cubDestSizeInBytes / sizeof(wchar_t)) - 1] = 0;
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return cchResult;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Converts a unicode string into a UTF8 (standard) string
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//-----------------------------------------------------------------------------
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int V_UnicodeToUTF8( const wchar_t *pUnicode, char *pUTF8, int cubDestSizeInBytes )
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{
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AssertValidStringPtr(pUTF8, cubDestSizeInBytes);
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AssertValidReadPtr(pUnicode);
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if ( cubDestSizeInBytes > 0 )
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{
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pUTF8[0] = 0;
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}
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#ifdef _WIN32
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int cchResult = WideCharToMultiByte( CP_UTF8, 0, pUnicode, -1, pUTF8, cubDestSizeInBytes, NULL, NULL );
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#elif defined( _PS3 )
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size_t cchResult = cubDestSizeInBytes, cchSrc = V_wcslen( pUnicode ) + 1;
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L10nResult result = UCS2stoUTF8s( ( const uint16 *) pUnicode, &cchSrc, ( uint8 * ) pUTF8, &cchResult );
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Assert( result == ConversionOK );
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#elif POSIX
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int cchResult = 0;
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if ( pUnicode && pUTF8 )
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{
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iconv_t conv_t = iconv_open( "UTF-8", "UTF-32LE" );
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int cchResult = -1;
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size_t nLenUnicde = ( wcslen(pUnicode) + 1 ) * sizeof(wchar_t); // 4 bytes per wchar vs. 1 byte for utf8 for simple english
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size_t nMaxUTF8 = cubDestSizeInBytes;
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char *pIn = (char *)pUnicode;
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char *pOut = (char *)pUTF8;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nLenUnicde, &pOut, &nMaxUTF8 );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = nMaxUTF8;
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}
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}
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#endif
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if ( cubDestSizeInBytes > 0 )
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{
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pUTF8[cubDestSizeInBytes - 1] = 0;
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}
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return cchResult;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Converts a ucs2 string to a unicode (wchar_t) one, no-op on win32
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//-----------------------------------------------------------------------------
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int V_UCS2ToUnicode( const ucs2 *pUCS2, wchar_t *pUnicode, int cubDestSizeInBytes )
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{
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AssertValidWritePtr(pUnicode);
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AssertValidReadPtr(pUCS2);
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pUnicode[0] = 0;
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#if defined( _WIN32 ) || defined( _PS3 )
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int lenUCS2 = V_wcslen( pUCS2 );
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int cchResult = MIN( (lenUCS2+1)*( int )sizeof(ucs2), cubDestSizeInBytes );
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V_wcsncpy( (wchar_t*)pUCS2, pUnicode, cchResult );
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#else
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iconv_t conv_t = iconv_open( "UCS-4LE", "UCS-2LE" );
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int cchResult = -1;
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size_t nLenUnicde = cubDestSizeInBytes;
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size_t nMaxUTF8 = cubDestSizeInBytes;
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char *pIn = (char *)pUCS2;
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char *pOut = (char *)pUnicode;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nLenUnicde, &pOut, &nMaxUTF8 );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = nMaxUTF8;
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}
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#endif
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pUnicode[(cubDestSizeInBytes / sizeof(wchar_t)) - 1] = 0;
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return cchResult;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Converts a wchar_t string into a UCS2 string -noop on windows
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//-----------------------------------------------------------------------------
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int V_UnicodeToUCS2( const wchar_t *pUnicode, int cubSrcInBytes, char *pUCS2, int cubDestSizeInBytes )
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{
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// TODO: MACMERGE: Figure out how to convert from 2-byte Win32 wchars to platform wchar_t type that can be 4 bytes
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#if defined( _WIN32 ) || defined( _PS3 )
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int cchResult = MIN( cubSrcInBytes, cubDestSizeInBytes );
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V_wcsncpy( (wchar_t*)pUCS2, pUnicode, cchResult );
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#elif defined (POSIX)
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iconv_t conv_t = iconv_open( "UCS-2LE", "UTF-32LE" );
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size_t cchResult = -1;
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size_t nLenUnicde = cubSrcInBytes;
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size_t nMaxUCS2 = cubDestSizeInBytes;
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char *pIn = (char*)pUnicode;
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char *pOut = pUCS2;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nLenUnicde, &pOut, &nMaxUCS2 );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = cubSrcInBytes / sizeof( wchar_t );
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}
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#endif
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return cchResult;
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}
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// UTF-8 encodes each character (code point) in 1 to 4 octets (8-bit bytes).
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// The first 128 characters of the Unicode character set (which correspond directly to the ASCII) use a single octet with the same binary value as in ASCII.
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// url:http://en.wikipedia.org/wiki/UTF-8
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#define MAX_UTF8_CHARACTER_BYTES 4
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//-----------------------------------------------------------------------------
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// Purpose: Converts a ucs-2 (windows wchar_t) string into a UTF8 (standard) string
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//-----------------------------------------------------------------------------
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VSTRTOOLS_INTERFACE int V_UCS2ToUTF8( const ucs2 *pUCS2, char *pUTF8, int cubDestSizeInBytes )
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{
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AssertValidStringPtr(pUTF8, cubDestSizeInBytes);
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AssertValidReadPtr(pUCS2);
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Assert( cubDestSizeInBytes >= 1 ); // must have at least 1 byte to write the terminator character
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pUTF8[0] = '\0';
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#ifdef _WIN32
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// under win32 wchar_t == ucs2, sigh
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int cchResult = WideCharToMultiByte( CP_UTF8, 0, pUCS2, -1, pUTF8, cubDestSizeInBytes, NULL, NULL );
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#elif defined( _PS3 )
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size_t cchResult = cubDestSizeInBytes, cchSrc = V_wcslen( pUCS2 ) + 1;
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L10nResult result = UCS2stoUTF8s( ( const uint16 *) pUCS2, &cchSrc, ( uint8 * ) pUTF8, &cchResult );
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Assert( result == ConversionOK );
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#elif defined(POSIX)
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iconv_t conv_t = iconv_open( "UTF-8", "UCS-2LE" );
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size_t cchResult = -1;
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size_t nLenUnicde = cubDestSizeInBytes;
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size_t nMaxUTF8 = cubDestSizeInBytes;
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char *pIn = (char *)pUCS2;
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char *pOut = (char *)pUTF8;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nLenUnicde, &pOut, &nMaxUTF8 );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = nMaxUTF8;
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}
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#endif
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pUTF8[cubDestSizeInBytes - 1] = '\0';
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return cchResult;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Converts a UTF8 to ucs-2 (windows wchar_t)
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//-----------------------------------------------------------------------------
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VSTRTOOLS_INTERFACE int V_UTF8ToUCS2( const char *pUTF8, int cubSrcInBytes, ucs2 *pUCS2, int cubDestSizeInBytes )
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{
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AssertValidStringPtr(pUTF8, cubDestSizeInBytes);
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AssertValidReadPtr(pUCS2);
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pUCS2[0] = 0;
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#ifdef _WIN32
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// under win32 wchar_t == ucs2, sigh
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int cchResult = MultiByteToWideChar( CP_UTF8, 0, pUTF8, -1, pUCS2, cubDestSizeInBytes / sizeof(wchar_t) );
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#elif defined( _PS3 )
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size_t cchResult = cubDestSizeInBytes / sizeof( uint16 ), cchSrc = cubSrcInBytes;
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L10nResult result = UTF8stoUCS2s( ( const uint8 *) pUTF8, &cchSrc, ( uint16 * ) pUCS2, &cchResult );
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Assert( result == ConversionOK );
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cchResult *= sizeof( uint16 );
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#elif defined(POSIX)
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iconv_t conv_t = iconv_open( "UCS-2LE", "UTF-8" );
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size_t cchResult = -1;
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size_t nLenUnicde = cubSrcInBytes;
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size_t nMaxUTF8 = cubDestSizeInBytes;
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char *pIn = (char *)pUTF8;
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char *pOut = (char *)pUCS2;
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if ( conv_t > 0 )
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{
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cchResult = 0;
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cchResult = iconv( conv_t, &pIn, &nLenUnicde, &pOut, &nMaxUTF8 );
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iconv_close( conv_t );
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if ( (int)cchResult < 0 )
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cchResult = 0;
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else
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cchResult = cubSrcInBytes;
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}
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#endif
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pUCS2[ (cubDestSizeInBytes/sizeof(ucs2)) - 1] = 0;
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return cchResult;
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}
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//-----------------------------------------------------------------------------
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// Purpose: copies at most nMaxBytes of the UTF-8 input data into the destination,
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// ensuring that a trailing multi-byte sequence isn't truncated.
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//-----------------------------------------------------------------------------
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VSTRTOOLS_INTERFACE void * V_UTF8_strncpy( char *pDest, const char *pSrc, size_t nMaxBytes )
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{
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strncpy( pDest, pSrc, nMaxBytes );
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// http://en.wikipedia.org/wiki/UTF-8
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int end = nMaxBytes-1;
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pDest[end] = 0;
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int nBytesSeen = 0, nBytesExpected = 0;
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// walk backwards, ignoring nulls
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while ( pDest[end] == 0 )
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--end;
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// found a non-null - see if it's part of a multi-byte sequence
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while ( ( pDest[end] & 0x80 ) && !( pDest[end] & 0x40 ) )
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{
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nBytesSeen++;
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--end;
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}
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if ( ( pDest[end] & 0xC0 ) == 0xC0 )
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{
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for ( int i = 6; i > 1; --i )
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{
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if ( (char)( pDest[end] >> i ) & 0x1 )
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++nBytesExpected;
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}
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}
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if ( nBytesExpected != nBytesSeen )
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pDest[end] = 0;
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return pDest;
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}
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