You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
3.7 KiB
139 lines
3.7 KiB
/*
|
|
** 2001 September 15
|
|
**
|
|
** The author disclaims copyright to this source code. In place of
|
|
** a legal notice, here is a blessing:
|
|
**
|
|
** May you do good and not evil.
|
|
** May you find forgiveness for yourself and forgive others.
|
|
** May you share freely, never taking more than you give.
|
|
**
|
|
*************************************************************************
|
|
** Main file for the SQLite library. The routines in this file
|
|
** implement the programmer interface to the library. Routines in
|
|
** other files are for internal use by SQLite and should not be
|
|
** accessed by users of the library.
|
|
**
|
|
** $Id: legacy.c,v 1.1.1.1 2006/02/03 20:35:11 hoganrobert Exp $
|
|
*/
|
|
|
|
#include "sqliteInt.h"
|
|
#include "os.h"
|
|
#include <ctype.h>
|
|
|
|
/*
|
|
** Execute SQL code. Return one of the SQLITE_ success/failure
|
|
** codes. Also write an error message into memory obtained from
|
|
** malloc() and make *pzErrMsg point to that message.
|
|
**
|
|
** If the SQL is a query, then for each row in the query result
|
|
** the xCallback() function is called. pArg becomes the first
|
|
** argument to xCallback(). If xCallback=NULL then no callback
|
|
** is invoked, even for queries.
|
|
*/
|
|
int sqlite3_exec(
|
|
sqlite3 *db, /* The database on which the SQL executes */
|
|
const char *zSql, /* The SQL to be executed */
|
|
sqlite3_callback xCallback, /* Invoke this callback routine */
|
|
void *pArg, /* First argument to xCallback() */
|
|
char **pzErrMsg /* Write error messages here */
|
|
){
|
|
int rc = SQLITE_OK;
|
|
const char *zLeftover;
|
|
sqlite3_stmt *pStmt = 0;
|
|
char **azCols = 0;
|
|
|
|
int nRetry = 0;
|
|
int nChange = 0;
|
|
int nCallback;
|
|
|
|
if( zSql==0 ) return SQLITE_OK;
|
|
while( (rc==SQLITE_OK || (rc==SQLITE_SCHEMA && (++nRetry)<2)) && zSql[0] ){
|
|
int nCol;
|
|
char **azVals = 0;
|
|
|
|
pStmt = 0;
|
|
rc = sqlite3_prepare(db, zSql, -1, &pStmt, &zLeftover);
|
|
if( rc!=SQLITE_OK ){
|
|
if( pStmt ) sqlite3_finalize(pStmt);
|
|
continue;
|
|
}
|
|
if( !pStmt ){
|
|
/* this happens for a comment or white-space */
|
|
zSql = zLeftover;
|
|
continue;
|
|
}
|
|
|
|
db->nChange += nChange;
|
|
nCallback = 0;
|
|
|
|
nCol = sqlite3_column_count(pStmt);
|
|
azCols = sqliteMalloc(2*nCol*sizeof(const char *));
|
|
if( nCol && !azCols ){
|
|
rc = SQLITE_NOMEM;
|
|
goto exec_out;
|
|
}
|
|
|
|
while( 1 ){
|
|
int i;
|
|
rc = sqlite3_step(pStmt);
|
|
|
|
/* Invoke the callback function if required */
|
|
if( xCallback && (SQLITE_ROW==rc ||
|
|
(SQLITE_DONE==rc && !nCallback && db->flags&SQLITE_NullCallback)) ){
|
|
if( 0==nCallback ){
|
|
for(i=0; i<nCol; i++){
|
|
azCols[i] = (char *)sqlite3_column_name(pStmt, i);
|
|
}
|
|
nCallback++;
|
|
}
|
|
if( rc==SQLITE_ROW ){
|
|
azVals = &azCols[nCol];
|
|
for(i=0; i<nCol; i++){
|
|
azVals[i] = (char *)sqlite3_column_text(pStmt, i);
|
|
}
|
|
}
|
|
if( xCallback(pArg, nCol, azVals, azCols) ){
|
|
rc = SQLITE_ABORT;
|
|
goto exec_out;
|
|
}
|
|
}
|
|
|
|
if( rc!=SQLITE_ROW ){
|
|
rc = sqlite3_finalize(pStmt);
|
|
pStmt = 0;
|
|
if( db->pVdbe==0 ){
|
|
nChange = db->nChange;
|
|
}
|
|
if( rc!=SQLITE_SCHEMA ){
|
|
nRetry = 0;
|
|
zSql = zLeftover;
|
|
while( isspace((unsigned char)zSql[0]) ) zSql++;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
sqliteFree(azCols);
|
|
azCols = 0;
|
|
}
|
|
|
|
exec_out:
|
|
if( pStmt ) sqlite3_finalize(pStmt);
|
|
if( azCols ) sqliteFree(azCols);
|
|
|
|
if( sqlite3_malloc_failed ){
|
|
rc = SQLITE_NOMEM;
|
|
}
|
|
if( rc!=SQLITE_OK && rc==sqlite3_errcode(db) && pzErrMsg ){
|
|
*pzErrMsg = malloc(1+strlen(sqlite3_errmsg(db)));
|
|
if( *pzErrMsg ){
|
|
strcpy(*pzErrMsg, sqlite3_errmsg(db));
|
|
}
|
|
}else if( pzErrMsg ){
|
|
*pzErrMsg = 0;
|
|
}
|
|
|
|
return rc;
|
|
}
|