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-rw-r--r--support/texlab/crates/bibutils_sys/src/gb18030.c184
1 files changed, 0 insertions, 184 deletions
diff --git a/support/texlab/crates/bibutils_sys/src/gb18030.c b/support/texlab/crates/bibutils_sys/src/gb18030.c
deleted file mode 100644
index b8fdf855fa..0000000000
--- a/support/texlab/crates/bibutils_sys/src/gb18030.c
+++ /dev/null
@@ -1,184 +0,0 @@
-#include <stdio.h>
-#include "gb18030.h"
-
-/* GB18030-2000 is an encoding of Unicode character used in China
- *
- * {0x00-0x7f} are one byte characters identical to US-ASCII
- * {0x80} is properly undefined, but many GB18030 encodings make
- * it the Euro sign (Unicode 0x20AC), so use that
- * {0x81-0xFE}{0x40-0x7E,0x80-0xFE} a full superset of GBK (with fallback
- * mappings)
- * {0x81-0xFE}{0x30-0x39}{0x81-0xFE}{0x30-0x39} maps linearly to ISO 10646
- * GB+81308130 = U+0080 up to U+FFFF
- * GB+90308130 = U+10000 up to U+10FFFF skipping mappings already
- * defined in 1-byte and 2-byte areas.
- *
- * Truth is it's a bit of a mess algorithmically as it doesn't multiply
- * encode characters, so there are holes in the Unicode mapping that
- * should be avoided.
- */
-
-/* This is a "small" region that needs explicit enumeration */
-#include "gb18030_enumeration.c"
-
-static int
-in_range( unsigned char n, unsigned char low, unsigned char high )
-{
- if ( n < low || n > high ) return 0;
- return 1;
-}
-
-
-/* Get GB 18030 from Unicode Value in Table */
-static int
-gb18030_unicode_table_lookup( unsigned int unicode, unsigned char out[4] )
-{
- int i, j;
- if ( unicode >= 0x0080 && unicode <= 0xFFE5 ) {
- /* list is sorted, so should do binary search here */
- for ( i=0; i<ngb18030_enums; ++i ) {
- if ( unicode == gb18030_enums[i].unicode ) {
- for ( j=0; j<gb18030_enums[i].len; ++j )
- out[j] = gb18030_enums[i].bytes[j];
- return gb18030_enums[i].len;
- }
- }
- }
- return 0;
-}
-
-static int
-gb18030_match( unsigned char *s, const unsigned char *bytes, unsigned char len )
-{
- int i;
- for ( i=0; i<len; ++i )
- if ( ( s[i])!=bytes[i] ) return 0;
- return 1;
-}
-
-static unsigned int
-gb18030_table_lookup( unsigned char *uc, unsigned char len, int *found )
-{
- unsigned int i;
- *found = 0;
- for ( i=0; i<ngb18030_enums; ++i ) {
- if ( gb18030_enums[i].len!=len ) continue;
- if ( gb18030_match( &(uc[0]), gb18030_enums[i].bytes, len ) ) {
- *found = 1;
- return gb18030_enums[i].unicode;
- }
- }
- return '?';
-}
-
-
-static int
-gb18030_unicode_range_lookup( unsigned int unicode, unsigned char out[4] )
-{
- return 0;
-}
-
-static int
-gb18030_range_lookup( unsigned char *s, /* unsigned char len = 4 only */ int *found )
-{
- *found = 0;
- return 0;
-#if 0
- <!-- Roundtrip-mappings that can be enumerated
- Note that GB 18030 defines roundtrip mappings for all Unicode code points U+0000..U+10ffff.
- This would require 1.1 million <a> elements.
- However, most four-byte GB 18030 mappings can be enumerated efficiently within distinct ranges.
- Therefore, we use <range> elements for all but the 31000 or so assignments above.
- -->
- <range uFirst="0452" uLast="200F" bFirst="81 30 D3 30" bLast="81 36 A5 31" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="2643" uLast="2E80" bFirst="81 37 A8 39" bLast="81 38 FD 38" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="361B" uLast="3917" bFirst="82 30 A6 33" bLast="82 30 F2 37" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="3CE1" uLast="4055" bFirst="82 31 D4 38" bLast="82 32 AF 32" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="4160" uLast="4336" bFirst="82 32 C9 37" bLast="82 32 F8 37" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="44D7" uLast="464B" bFirst="82 33 A3 39" bLast="82 33 C9 31" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="478E" uLast="4946" bFirst="82 33 E8 38" bLast="82 34 96 38" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="49B8" uLast="4C76" bFirst="82 34 A1 31" bLast="82 34 E7 33" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="9FA6" uLast="D7FF" bFirst="82 35 8F 33" bLast="83 36 C7 38" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="E865" uLast="F92B" bFirst="83 36 D0 30" bLast="84 30 85 34" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="FA2A" uLast="FE2F" bFirst="84 30 9C 38" bLast="84 31 85 37" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="FFE6" uLast="FFFF" bFirst="84 31 A2 34" bLast="84 31 A4 39" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
- <range uFirst="10000" uLast="10FFFF" bFirst="90 30 81 30" bLast="E3 32 9A 35" bMin="81 30 81 30" bMax="FE 39 FE 39"/>
-#endif
-}
-
-unsigned int
-gb18030_to_unicode( unsigned char *s, unsigned char len )
-{
- unsigned int ret;
- int found;
- ret = gb18030_table_lookup( s, len, &found );
- if ( !found && len==4 ) {
- ret = gb18030_range_lookup( s, &found );
- if ( !found ) ret = '?';
- }
- return ret;
-}
-
-/*
- * Convert unicode character to gb18030
- *
- * returns number of characters for output
- */
-int
-gb18030_encode( unsigned int unicode, unsigned char out[4] )
-{
- int len;
- if ( unicode < 0x80 ) {
- out[0] = unicode;
- len = 1;
- } else {
- len = gb18030_unicode_table_lookup( unicode, out );
- if ( !len )
- len = gb18030_unicode_range_lookup( unicode, out );
- }
- return len;
-}
-
-/*
- * Decode a gb18030 character into unicode
- */
-unsigned int
-gb18030_decode( char *s, unsigned int *pi )
-{
- unsigned int c;
- unsigned char uc[4];
- int i = *pi;
- uc[0] = ( unsigned char ) s[i];
- if ( ( uc[0] & 128 ) == 0 ) {
- c = ( unsigned int ) uc[0];
- i += 1;
- } else if ( uc[0] == 0x80 ) {
- c = 0x20AC;
- i += 1;
- } else if ( uc[0] != 0xFF ) { /* multi-byte character */
- uc[1] = ( unsigned char ) s[i+1];
- uc[2] = ( unsigned char ) s[i+2];
- uc[3]= ( unsigned char ) s[i+3];
- if ( in_range( uc[1], 0x40, 0x7e ) || in_range( uc[1], 0x80, 0xfe ) ) {
- /* two-byte character */
- c = gb18030_to_unicode( &(uc[0]), 2 );
- i += 2;
- } else if ( in_range( uc[1], 0x30, 0x39 ) &&
- in_range( uc[2], 0x81, 0xfe ) &&
- in_range( uc[3], 0x30, 0x39 ) ) {
- /* four-byte character */
- c = gb18030_to_unicode( &(uc[0]), 4 );
- i += 4;
- } else {
- /* this is an illegal character */
- c = '?';
- i += 1;
- }
- } else { /* s[i]==0xFF */
- /* this is an illegal character */
- c = '?';
- i += 1;
- }
- *pi = i;
- return c;
-}