/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/
int sqlite3_prepare16(
sqlite3 *db, /* Database handle. */
const void *zSql, /* UTF-8 encoded SQL statement. */
int nBytes, /* Length of zSql in bytes. */
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
const void **pzTail /* OUT: End of parsed string */
){
/* This function currently works by first transforming the UTF-16
** encoded string to UTF-8, then invoking sqlite3_prepare(). The
** tricky bit is figuring out the pointer to return in *pzTail.
*/
char *zSql8;
const char *zTail8 = 0;
int rc = SQLITE_OK;
if( sqlite3SafetyCheck(db) ){
return SQLITE_MISUSE;
}
zSql8 = sqlite3utf16to8(zSql, nBytes);
if( zSql8 ){
rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
}
if( zTail8 && pzTail ){
/* If sqlite3_prepare returns a tail pointer, we calculate the
** equivalent pointer into the UTF-16 string by counting the unicode
** characters between zSql8 and zTail8, and then returning a pointer
** the same number of characters into the UTF-16 string.
*/
int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
*pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
}
sqliteFree(zSql8);
return sqlite3ApiExit(db, rc);
}
/*
** Register a new collation sequence with the database handle db.
*/
int sqlite3_create_collation16(
sqlite3* db,
const char *zName,
int enc,
void* pCtx,
int(*xCompare)(void*,int,const void*,int,const void*)
){
int rc = SQLITE_OK;
char *zName8;
assert( !sqlite3MallocFailed() );
zName8 = sqlite3utf16to8(zName, -1);
if( zName8 ){
rc = createCollation(db, zName8, enc, pCtx, xCompare);
sqliteFree(zName8);
}
return sqlite3ApiExit(db, rc);
}
int sqlite3_create_function16(
sqlite3 *db,
const void *zFunctionName,
int nArg,
int eTextRep,
void *p,
void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
void (*xStep)(sqlite3_context*,int,sqlite3_value**),
void (*xFinal)(sqlite3_context*)
){
int rc;
char *zFunc8;
assert( !sqlite3MallocFailed() );
zFunc8 = sqlite3utf16to8(zFunctionName, -1);
rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xFunc, xStep, xFinal);
sqliteFree(zFunc8);
return sqlite3ApiExit(db, rc);
}
