diff options
Diffstat (limited to 'support/texlab/crates/bibutils_sys/src/utf8.c')
-rw-r--r-- | support/texlab/crates/bibutils_sys/src/utf8.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/support/texlab/crates/bibutils_sys/src/utf8.c b/support/texlab/crates/bibutils_sys/src/utf8.c deleted file mode 100644 index fcc14365a4..0000000000 --- a/support/texlab/crates/bibutils_sys/src/utf8.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - * utf8.c - * - * Copyright (c) Chris Putnam 2004-2019 - * - * Source code released under the GPL version 2 - * - */ -#include <stdio.h> -#include <string.h> -#include "utf8.h" - -/* UTF-8 encoding - -U-00000000 - U-0000007F: 0xxxxxxx -U-00000080 - U-000007FF: 110xxxxx 10xxxxxx -U-00000800 - U-0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx -U-00010000 - U-001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx -U-00200000 - U-03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx -U-04000000 - U-7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx - -*/ - -static void -utf8_build( unsigned int value, unsigned char out[6], int in_pos, int out_pos ) -{ - unsigned int in_mask, out_mask; - int byte = 0; - while ( in_pos < 32 ) { - in_mask = 1 << ( 31 - in_pos ); - out_mask = 1 << ( 7 - out_pos ); - if ( value & in_mask ) out[byte] |= out_mask; - in_pos++; - out_pos++; - if ( out_pos > 7 ) { - out_pos=2; - byte++; - } - } -} - -/* int utf8( in, out[6] ); - * - * in is character code 0x0 -> 0x7FFFFFFF - * int is number of characters for output - * - */ -int -utf8_encode( unsigned int value, unsigned char out[6] ) -{ - int i; - for ( i=1; i<6; ++i ) out[i] = 0x80; /* 10xxxxxx */ - if ( value < 0x80 ) { - out[0] = 0x0; /* 0xxxxxxx */ - utf8_build( value, out, 25, 1 ); - return 1; - } else if ( value < 0x800 ) { - out[0] = 0xC0; /* 110xxxxx */ - utf8_build( value, out, 21, 3 ); - return 2; - } else if ( value < 0x10000 ) { - out[0] = 0xE0; /* 1110xxxx */ - utf8_build( value, out, 16, 4 ); - return 3; - } else if ( value < 0x200000 ) { - out[0] = 0xF0; /* 11110xxx */ - utf8_build( value, out, 11, 5 ); - return 4; - } else if ( value < 0x4000000 ) { - out[0] = 0xF8; /* 111110xx */ - utf8_build( value, out, 6, 6 ); - return 5; - } else if ( value < (unsigned int ) 0x80000000 ) { - out[0] = 0xFC; /* 1111110x */ - utf8_build( value, out, 1, 7 ); - return 6; - } else { - /* error, above 2^31 bits encodable by UTF-8 */ - return 0; - } -} - -/* Generate UTF8 character as null-terminated string */ -void -utf8_encode_str( unsigned int value, char outstr[7] ) -{ - unsigned char encoded[6]; - int i, n; - n = utf8_encode( value, encoded ); - for ( i=0; i<n; ++i ) - outstr[i] = ( char ) encoded[i]; - outstr[n] = '\0'; -} - -unsigned int -utf8_decode( const char *s, unsigned int *pi ) -{ - unsigned int c; - int i = *pi; - /* one digit utf-8 */ - if ((s[i] & 128)== 0 ) { - c = (unsigned int) s[i]; - i += 1; - } else if ((s[i] & 224)== 192 ) { /* 110xxxxx & 111xxxxx == 110xxxxx */ - c = (( (unsigned int) s[i] & 31 ) << 6) + - ( (unsigned int) s[i+1] & 63 ); - i += 2; - } else if ((s[i] & 240)== 224 ) { /* 1110xxxx & 1111xxxx == 1110xxxx */ - c = ( ( (unsigned int) s[i] & 15 ) << 12 ) + - ( ( (unsigned int) s[i+1] & 63 ) << 6 ) + - ( (unsigned int) s[i+2] & 63 ); - i += 3; - } else if ((s[i] & 248)== 240 ) { /* 11110xxx & 11111xxx == 11110xxx */ - c = ( ( (unsigned int) s[i] & 7 ) << 18 ) + - ( ( (unsigned int) s[i+1] & 63 ) << 12 ) + - ( ( (unsigned int) s[i+2] & 63 ) << 6 ) + - ( (unsigned int) s[i+3] & 63 ); - i+= 4; - } else if ((s[i] & 252)== 248 ) { /* 111110xx & 111111xx == 111110xx */ - c = ( ( (unsigned int) s[i] & 3 ) << 24 ) + - ( ( (unsigned int) s[i+1] & 63 ) << 18 ) + - ( ( (unsigned int) s[i+2] & 63 ) << 12 ) + - ( ( (unsigned int) s[i+3] & 63 ) << 6 ) + - ( (unsigned int) s[i+4] & 63 ); - i += 5; - } else if ((s[i] & 254)== 252 ) { /* 1111110x & 1111111x == 1111110x */ - c = ( ( (unsigned int) s[i] & 1 ) << 30 ) + - ( ( (unsigned int) s[i+1] & 63 ) << 24 ) + - ( ( (unsigned int) s[i+2] & 63 ) << 18 ) + - ( ( (unsigned int) s[i+3] & 63 ) << 12 ) + - ( ( (unsigned int) s[i+4] & 63 ) << 6 ) + - ( (unsigned int) s[i+5] & 63 ); - i += 6; - } else { - c = '?'; - i++; - } - *pi = i; - return c; -} - -void -utf8_writebom( FILE *outptr ) -{ - int i, nc; - unsigned char code[6]; - nc = utf8_encode( 0xFEFF, code ); - for ( i=0; i<nc; ++i ) - fprintf(outptr,"%c",code[i]); -} - -int -utf8_is_bom( const char *p ) -{ - const unsigned char *up = ( unsigned char * ) p; - - /* ...if null-terminated string is too short, we're ok */ - if ( up[0]!=0xEF ) return 0; - if ( up[1]!=0xBB ) return 0; - if ( up[2]!=0xBF ) return 0; - - return 1; -} - -/* utf8_is_emdash() - * - *emdash = 0xE2 (-30) 0x80 (-128) 0x94 (-108) - */ -int -utf8_is_emdash( const char *p ) -{ - const char emdash[3] = { -30, -128, -108 }; - if ( strncmp( p, emdash, 3 ) ) return 0; - return 1; -} - -/* utf8_is_endash() - * - * endash = 0xE2 (-30) 0x80 (-128) 0x93 (-109) - */ -int -utf8_is_endash( const char *p ) -{ - const char endash[3] = { -30, -128, -109 }; - if ( strncmp( p, endash, 3 ) ) return 0; - return 1; -} - |