database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-10-24 09:53:10 +03:00
Code Activity

Use the faster LIKE function from sqlite v2. Add special user functions to

Browse Source 
test builds to test the auxdata APIs. (CVS 1610)

FossilOrigin-Name: b9493c5facea4d24a6cbc4f6fa2f75dc2399a11d
This commit is contained in:
danielk1977
2004-06-17 05:36:44 +00:00
parent d09b592f63
commit 3f6b087471
8 changed files with 228 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
src/func.c
View File

@@ -16,7 +16,7 @@
** sqliteRegisterBuildinFunctions() found at the bottom of the file.
** All other code has file scope.
**
** $Id: func.c,v 1.70 2004/06/16 10:39:24 danielk1977 Exp $
** $Id: func.c,v 1.71 2004/06/17 05:36:44 danielk1977 Exp $
*/
#include <ctype.h>
#include <math.h>
@@ -317,8 +317,8 @@ void deleteLike(void *pLike){
}
#if 0
/* #define TRACE_LIKE */
#if defined(TRACE_LIKE) && !defined(NDEBUG)
char *dumpLike(LikePattern *pLike){
int i;
@@ -543,6 +543,31 @@ skip_read:
sqlite3_result_int(context, 0);
}
}
#endif
/*
** Implementation of the like() SQL function. This function implements
** the build-in LIKE operator. The first argument to the function is the
** pattern and the second argument is the string. So, the SQL statements:
**
** A LIKE B
**
** is implemented as like(B,A).
**
** If the pointer retrieved by via a call to sqlite3_user_data() is
** not NULL, then this function uses UTF-16. Otherwise UTF-8.
*/
static void likeFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
const unsigned char *zA = sqlite3_value_text(argv[0]);
const unsigned char *zB = sqlite3_value_text(argv[1]);
if( zA && zB ){
sqlite3_result_int(context, sqlite3utf8LikeCompare(zA, zB));
}
}
/*
** Implementation of the glob() SQL function. This function implements
@@ -785,6 +810,36 @@ static void test_destructor_count(
){
sqlite3_result_int(pCtx, test_destructor_count_var);
}
static void free_test_auxdata(void *p) {sqliteFree(p);}
static void test_auxdata(
sqlite3_context *pCtx,
int nArg,
sqlite3_value **argv
){
int i;
char *zRet = sqliteMalloc(nArg*2);
if( !zRet ) return;
for(i=0; i<nArg; i++){
char const *z = sqlite3_value_text(argv[i]);
if( z ){
char *zAux = sqlite3_get_auxdata(pCtx, i);
if( zAux ){
zRet[i*2] = '1';
if( strcmp(zAux, z) ){
sqlite3_result_error(pCtx, "Auxilary data corruption", -1);
return;
}
}else{
zRet[i*2] = '0';
zAux = sqliteStrDup(z);
sqlite3_set_auxdata(pCtx, i, zAux, free_test_auxdata);
}
zRet[i*2+1] = ' ';
}
}
sqlite3_result_text(pCtx, zRet, 2*nArg-1, free_test_auxdata);
}
#endif
/*
@@ -965,7 +1020,7 @@ void sqlite3RegisterBuiltinFunctions(sqlite *db){
{ "ifnull", 2, 0, SQLITE_UTF8, 1, ifnullFunc },
{ "random", -1, 0, SQLITE_UTF8, 0, randomFunc },
{ "like", 2, 0, SQLITE_UTF8, 0, likeFunc },
{ "like", 2, 2, SQLITE_UTF16,0, likeFunc },
/* { "like", 2, 2, SQLITE_UTF16,0, likeFunc }, */
{ "glob", 2, 0, SQLITE_UTF8, 0, globFunc },
{ "nullif", 2, 0, SQLITE_UTF8, 0, nullifFunc },
{ "sqlite_version", 0, 0, SQLITE_UTF8, 0, versionFunc},
@@ -981,6 +1036,7 @@ void sqlite3RegisterBuiltinFunctions(sqlite *db){
{ "randstr", 2, 0, SQLITE_UTF8, 0, randStr },
{ "test_destructor", 1, 0, SQLITE_UTF8, 0, test_destructor},
{ "test_destructor_count", 0, 0, SQLITE_UTF8, 0, test_destructor_count},
{ "test_auxdata", -1, 0, SQLITE_UTF8, 0, test_auxdata},
#endif
};
static struct {