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Simplification to the logic underlying PRAGMA case_sensitive_like.

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FossilOrigin-Name: ef0015fde4c87e992ffd3d7dea8586951bdd65ff98d30d436b126b85b1cc9c74
This commit is contained in:
drh
2019-05-08 19:32:33 +00:00
parent 9e9374b2e2
commit ea5c040f87
4 changed files with 25 additions and 32 deletions
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22
src/func.c
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@@ -1795,21 +1795,6 @@ void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3 *db){
}
}
/*
** Set the LIKEOPT flag on the 2-argument function with the given name.
*/
static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){
FuncDef *pDef;
pDef = sqlite3FindFunction(db, zName, 2, SQLITE_UTF8, 0);
if( ALWAYS(pDef) ){
pDef->funcFlags |= flagVal;
}
pDef = sqlite3FindFunction(db, zName, 3, SQLITE_UTF8, 0);
if( pDef ){
pDef->funcFlags |= flagVal;
}
}
/*
** Re-register the built-in LIKE functions. The caseSensitive
** parameter determines whether or not the LIKE operator is case
@@ -1817,15 +1802,18 @@ static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){
*/
void sqlite3RegisterLikeFunctions(sqlite3 *db, int caseSensitive){
struct compareInfo *pInfo;
int flags;
if( caseSensitive ){
pInfo = (struct compareInfo*)&likeInfoAlt;
flags = SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE;
}else{
pInfo = (struct compareInfo*)&likeInfoNorm;
flags = SQLITE_FUNC_LIKE;
}
sqlite3CreateFunc(db, "like", 2, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0, 0, 0);
sqlite3CreateFunc(db, "like", 3, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0, 0, 0);
setLikeOptFlag(db, "like",
caseSensitive ? (SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE) : SQLITE_FUNC_LIKE);
sqlite3FindFunction(db, "like", 2, SQLITE_UTF8, 0)->funcFlags |= flags;
sqlite3FindFunction(db, "like", 3, SQLITE_UTF8, 0)->funcFlags |= flags;
}
/*