diff options
Diffstat (limited to 'squirrel_3_0_1_stable/_OLD_sqplus/SqPlusUtf8.cpp')
| -rw-r--r-- | squirrel_3_0_1_stable/_OLD_sqplus/SqPlusUtf8.cpp | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusUtf8.cpp b/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusUtf8.cpp deleted file mode 100644 index f5ee39ae5..000000000 --- a/squirrel_3_0_1_stable/_OLD_sqplus/SqPlusUtf8.cpp +++ /dev/null @@ -1,133 +0,0 @@ -
-///////////////////////////////////////////////////////////////////////
-// Simple conversion routines, to, from UTF8 and full Unicode character
-// (using int).
-//
-
-// Only when needed
-#if !defined(SQPLUS_USE_LATIN1) || SQPLUS_USE_LATIN1==0
-
-static char g_utf8_length[256];
-static int g_did_init_length;
-
-void sqplus_init_utf8_lengths() {
- // Fill in lengths in array above
- for( int lb=0; lb<256; lb++ ){
- int l = -1;
- if( !(lb&0x80) ) l=1;
- else if( (lb&0xE0)==0xC0 ) l=2;
- else if( (lb&0xF0)==0xE0 ) l=3;
- else if( (lb&0xF8)==0xF0 ) l=4;
- else if( (lb&0xFC)==0xF8 ) l=5;
- else if( (lb&0xFE)==0xFC ) l=6;
- g_utf8_length[lb] = l;
- }
- g_did_init_length = 1;
-}
-
-// Length of a UTF8 encoded Unicode character
-int sqplus_utf8_len(int lead_byte){
- if( !(lead_byte&0x80) ) return 1; // Special case, make faster
- if( !g_did_init_length )
- sqplus_init_utf8_lengths();
-
- return g_utf8_length[(unsigned char)lead_byte];
-}
-
-int sqplus_utf8_len_first(const char* pc){
- int lb = *(unsigned char*)pc;
- if( !(lb&0x80) ) return 1; // Special case, make faster
- if( !g_did_init_length )
- sqplus_init_utf8_lengths();
-
- int l = g_utf8_length[(unsigned char)lb];
- if( l>0 ) return l;
-
- // Invalid UTF8 lead byte. Look for next valid character.
- const char *pc1 = pc+1;
- while( ((*pc1)&0xC0)==0x80 )
- pc1++;
- return int(pc1 - pc);
-}
-
-
-// Length of a UTF8 encoded Unicode string (number of Unicode characters)
-int sqplus_utf8_strlen(const char *str) {
- if( !str ) return 0;
- int l, tl=0;
- while( *str ){
- l = sqplus_utf8_len_first(str);
- str += l;
- tl++;
- }
- return tl;
-}
-
-// Convert one UTF8 encoded character to Unicode point
-int sqplus_utf8_to_wchar(int *result, const char *string){
- int res=-1;
-
- // Assume argument pointers to be OK
- unsigned char ch = *string;
- int l = sqplus_utf8_len(ch);
-
- if( l<1 ) return -1;
- int wc = l>1 ? (ch&(0x7F>>l)) : ch;
- while( l>1 ){
- wc = (wc<<6) + (*++string & 0x3F);
- l--;
- }
- *result = wc;
-
- return 0;
-}
-
-// Convert one Unicode point to UTF8 encoded version.
-// Checks if output fits in 1/4/6 bytes buffer.
-int sqplus_wchar_to_utf8(char *s, int wc, int size){
- if( size<1 ) return -1;
- if( (unsigned int)wc>=0x80000000 ) return -2;
-
- // Single byte case
- if( wc<0x80 ){
- *s = (char)wc;
- //*s = (char)wc&0x7F;
- return 1;
- }
- if( size<4 ) return -3;
-
- // Two or more UTF8 bytes
- int p = 1; // Index of last UTF8 byte
- if( wc>0x7FF ){ // 11 bits
- // Three or more UTF8 bytes
- p++; // p>=2
- if( wc>0xFFFF ){ // 16 bits
- // Four or more UTF8 bytes
- p++; // p>=3
- if( wc>0x1FFFFF ){ // 21 bits
- // Five or more UTF8 bytes
- if( size<6 ) return -3;
- p++; // p>=4 UTF8 bytes
- if( wc>0x3FFFFFF ){ // 26 bits
- // Six UTF8 bytes
- p++; // p>=5
- if( (unsigned int)wc>(unsigned int)0x7FFFFFF ){ // 31 bits
- // Would need 7 UTF8 bytes. Not supported.
- return -10;
- }
- s[p-4] = 0x80 | ((wc>>24)&0x3F); // Bit 24..29
- }
- s[p-3] = 0x80 | ((wc>>18)&0x3F); // Bit 18..23
- }
- s[p-2] = 0x80 | ((wc>>12)&0x3F); // Bit 12..17
- }
- s[p-1] = 0x80 | ((wc>>6)&0x3F); // Bit 6..11
- }
- s[p] = 0x80 | (wc&0x3F); // Bit 0..5
- s[0] = (0xFC << (5-p)) | (wc>>(p*6));
-
- return p+1;
-}
-
-#endif // #if !defined(SQPLUS_USE_LATIN1) || SQPLUS_USE_LATIN1==0
-
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