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Overview
| Comment: | Fix bugs in substr() for UTF-8. (CVS 406) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | e9fd9e7b0fed445b48e7024ecde0354f |
| User & Date: | drh 2002-02-28 04:00:12 |
Context
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2002-02-28
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| 04:10 | Bug fix when -DMEMORY_DEBUG is off. (CVS 407) check-in: e14b0c82 user: drh tags: trunk | |
| 04:00 | Fix bugs in substr() for UTF-8. (CVS 406) check-in: e9fd9e7b user: drh tags: trunk | |
| 03:31 | Remove unused opcodes from the VDBE and fix a bug in the substr() function. (CVS 405) check-in: e8611e0c user: drh tags: trunk | |
Changes
Changes to src/func.c.
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** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.11 2002/02/28 03:31:11 drh Exp $ */ #include <ctype.h> #include <math.h> #include <stdlib.h> #include <assert.h> #include "sqliteInt.h" ................................................................................ int p1, p2, len; assert( argc==3 ); z = argv[0]; if( z==0 ) return; p1 = atoi(argv[1]?argv[1]:0); p2 = atoi(argv[2]?argv[2]:0); #ifdef SQLITE_UTF8 for(len=0, z2=z; *z2; z2++){ if( (0xc0&*z)!=0x80 ) len++; } #else len = strlen(z); #endif if( p1<0 ){ p1 += len; if( p1<0 ){ p2 += p1; ................................................................................ } if( p1+p2>len ){ p2 = len-p1; } #ifdef SQLITE_UTF8 for(i=0; i<p1; i++){ assert( z[i] ); if( (z[i]&0xc0)!=0x80 ) p1++; } for(; i<p1+p2; i++){ assert( z[i] ); if( (z[i]&0xc0)!=0x80 ) p2++; } #endif if( p2<0 ) p2 = 0; sqlite_set_result_string(context, &z[p1], p2); } /* ** Implementation of the round() function |
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12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 .. 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 ... 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 |
** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.12 2002/02/28 04:00:12 drh Exp $ */ #include <ctype.h> #include <math.h> #include <stdlib.h> #include <assert.h> #include "sqliteInt.h" ................................................................................ int p1, p2, len; assert( argc==3 ); z = argv[0]; if( z==0 ) return; p1 = atoi(argv[1]?argv[1]:0); p2 = atoi(argv[2]?argv[2]:0); #ifdef SQLITE_UTF8 for(len=0, z2=z; *z2; z2++){ if( (0xc0&*z2)!=0x80 ) len++; } #else len = strlen(z); #endif if( p1<0 ){ p1 += len; if( p1<0 ){ p2 += p1; ................................................................................ } if( p1+p2>len ){ p2 = len-p1; } #ifdef SQLITE_UTF8 for(i=0; i<p1; i++){ assert( z[i] ); if( (z[i]&0xc0)==0x80 ) p1++; } while( z[i] && (z[i]&0xc0)==0x80 ){ i++; p1++; } for(; i<p1+p2; i++){ assert( z[i] ); if( (z[i]&0xc0)==0x80 ) p2++; } while( z[i] && (z[i]&0xc0)==0x80 ){ i++; p2++; } #endif if( p2<0 ) p2 = 0; sqlite_set_result_string(context, &z[p1], p2); } /* ** Implementation of the round() function |