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Add the sqlite3_normalized_sql() API.

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FossilOrigin-Name: 592b66e8058dd03a056a036e2606247c9efdb06d15eebe9bcc455f7f55e30ae6
This commit is contained in:
mistachkin
2018-10-29 17:53:23 +00:00
parent dbe7d37ae8
commit 8bee11a41e
22 changed files with 996 additions and 66 deletions
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19
src/callback.c
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@@ -295,6 +295,21 @@ static FuncDef *functionSearch(
}
return 0;
}
#ifdef SQLITE_ENABLE_NORMALIZE
FuncDef *sqlite3FunctionSearchN(
int h, /* Hash of the name */
const char *zFunc, /* Name of function */
int nFunc /* Length of the name */
){
FuncDef *p;
for(p=sqlite3BuiltinFunctions.a[h]; p; p=p->u.pHash){
if( sqlite3StrNICmp(p->zName, zFunc, nFunc)==0 ){
return p;
}
}
return 0;
}
#endif /* SQLITE_ENABLE_NORMALIZE */
/*
** Insert a new FuncDef into a FuncDefHash hash table.
@@ -308,7 +323,7 @@ void sqlite3InsertBuiltinFuncs(
FuncDef *pOther;
const char *zName = aDef[i].zName;
int nName = sqlite3Strlen30(zName);
int h = (zName[0] + nName) % SQLITE_FUNC_HASH_SZ;
int h = SQLITE_FUNC_HASH(zName[0], nName);
assert( zName[0]>='a' && zName[0]<='z' );
pOther = functionSearch(h, zName);
if( pOther ){
@@ -387,7 +402,7 @@ FuncDef *sqlite3FindFunction(
*/
if( !createFlag && (pBest==0 || (db->mDbFlags & DBFLAG_PreferBuiltin)!=0) ){
bestScore = 0;
h = (sqlite3UpperToLower[(u8)zName[0]] + nName) % SQLITE_FUNC_HASH_SZ;
h = SQLITE_FUNC_HASH(sqlite3UpperToLower[(u8)zName[0]], nName);
p = functionSearch(h, zName);
while( p ){
int score = matchQuality(p, nArg, enc);