| Index: third_party/sqlite/src/table.c
|
| ===================================================================
|
| --- third_party/sqlite/src/table.c (revision 56608)
|
| +++ third_party/sqlite/src/table.c (working copy)
|
| @@ -1,199 +0,0 @@
|
| -/*
|
| -** 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.
|
| -**
|
| -*************************************************************************
|
| -** This file contains the sqlite3_get_table() and sqlite3_free_table()
|
| -** interface routines. These are just wrappers around the main
|
| -** interface routine of sqlite3_exec().
|
| -**
|
| -** These routines are in a separate files so that they will not be linked
|
| -** if they are not used.
|
| -**
|
| -** $Id: table.c,v 1.40 2009/04/10 14:28:00 drh Exp $
|
| -*/
|
| -#include "sqliteInt.h"
|
| -#include <stdlib.h>
|
| -#include <string.h>
|
| -
|
| -#ifndef SQLITE_OMIT_GET_TABLE
|
| -
|
| -/*
|
| -** This structure is used to pass data from sqlite3_get_table() through
|
| -** to the callback function is uses to build the result.
|
| -*/
|
| -typedef struct TabResult {
|
| - char **azResult; /* Accumulated output */
|
| - char *zErrMsg; /* Error message text, if an error occurs */
|
| - int nAlloc; /* Slots allocated for azResult[] */
|
| - int nRow; /* Number of rows in the result */
|
| - int nColumn; /* Number of columns in the result */
|
| - int nData; /* Slots used in azResult[]. (nRow+1)*nColumn */
|
| - int rc; /* Return code from sqlite3_exec() */
|
| -} TabResult;
|
| -
|
| -/*
|
| -** This routine is called once for each row in the result table. Its job
|
| -** is to fill in the TabResult structure appropriately, allocating new
|
| -** memory as necessary.
|
| -*/
|
| -static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){
|
| - TabResult *p = (TabResult*)pArg; /* Result accumulator */
|
| - int need; /* Slots needed in p->azResult[] */
|
| - int i; /* Loop counter */
|
| - char *z; /* A single column of result */
|
| -
|
| - /* Make sure there is enough space in p->azResult to hold everything
|
| - ** we need to remember from this invocation of the callback.
|
| - */
|
| - if( p->nRow==0 && argv!=0 ){
|
| - need = nCol*2;
|
| - }else{
|
| - need = nCol;
|
| - }
|
| - if( p->nData + need > p->nAlloc ){
|
| - char **azNew;
|
| - p->nAlloc = p->nAlloc*2 + need;
|
| - azNew = sqlite3_realloc( p->azResult, sizeof(char*)*p->nAlloc );
|
| - if( azNew==0 ) goto malloc_failed;
|
| - p->azResult = azNew;
|
| - }
|
| -
|
| - /* If this is the first row, then generate an extra row containing
|
| - ** the names of all columns.
|
| - */
|
| - if( p->nRow==0 ){
|
| - p->nColumn = nCol;
|
| - for(i=0; i<nCol; i++){
|
| - z = sqlite3_mprintf("%s", colv[i]);
|
| - if( z==0 ) goto malloc_failed;
|
| - p->azResult[p->nData++] = z;
|
| - }
|
| - }else if( p->nColumn!=nCol ){
|
| - sqlite3_free(p->zErrMsg);
|
| - p->zErrMsg = sqlite3_mprintf(
|
| - "sqlite3_get_table() called with two or more incompatible queries"
|
| - );
|
| - p->rc = SQLITE_ERROR;
|
| - return 1;
|
| - }
|
| -
|
| - /* Copy over the row data
|
| - */
|
| - if( argv!=0 ){
|
| - for(i=0; i<nCol; i++){
|
| - if( argv[i]==0 ){
|
| - z = 0;
|
| - }else{
|
| - int n = sqlite3Strlen30(argv[i])+1;
|
| - z = sqlite3_malloc( n );
|
| - if( z==0 ) goto malloc_failed;
|
| - memcpy(z, argv[i], n);
|
| - }
|
| - p->azResult[p->nData++] = z;
|
| - }
|
| - p->nRow++;
|
| - }
|
| - return 0;
|
| -
|
| -malloc_failed:
|
| - p->rc = SQLITE_NOMEM;
|
| - return 1;
|
| -}
|
| -
|
| -/*
|
| -** Query the database. But instead of invoking a callback for each row,
|
| -** malloc() for space to hold the result and return the entire results
|
| -** at the conclusion of the call.
|
| -**
|
| -** The result that is written to ***pazResult is held in memory obtained
|
| -** from malloc(). But the caller cannot free this memory directly.
|
| -** Instead, the entire table should be passed to sqlite3_free_table() when
|
| -** the calling procedure is finished using it.
|
| -*/
|
| -int sqlite3_get_table(
|
| - sqlite3 *db, /* The database on which the SQL executes */
|
| - const char *zSql, /* The SQL to be executed */
|
| - char ***pazResult, /* Write the result table here */
|
| - int *pnRow, /* Write the number of rows in the result here */
|
| - int *pnColumn, /* Write the number of columns of result here */
|
| - char **pzErrMsg /* Write error messages here */
|
| -){
|
| - int rc;
|
| - TabResult res;
|
| -
|
| - *pazResult = 0;
|
| - if( pnColumn ) *pnColumn = 0;
|
| - if( pnRow ) *pnRow = 0;
|
| - if( pzErrMsg ) *pzErrMsg = 0;
|
| - res.zErrMsg = 0;
|
| - res.nRow = 0;
|
| - res.nColumn = 0;
|
| - res.nData = 1;
|
| - res.nAlloc = 20;
|
| - res.rc = SQLITE_OK;
|
| - res.azResult = sqlite3_malloc(sizeof(char*)*res.nAlloc );
|
| - if( res.azResult==0 ){
|
| - db->errCode = SQLITE_NOMEM;
|
| - return SQLITE_NOMEM;
|
| - }
|
| - res.azResult[0] = 0;
|
| - rc = sqlite3_exec(db, zSql, sqlite3_get_table_cb, &res, pzErrMsg);
|
| - assert( sizeof(res.azResult[0])>= sizeof(res.nData) );
|
| - res.azResult[0] = SQLITE_INT_TO_PTR(res.nData);
|
| - if( (rc&0xff)==SQLITE_ABORT ){
|
| - sqlite3_free_table(&res.azResult[1]);
|
| - if( res.zErrMsg ){
|
| - if( pzErrMsg ){
|
| - sqlite3_free(*pzErrMsg);
|
| - *pzErrMsg = sqlite3_mprintf("%s",res.zErrMsg);
|
| - }
|
| - sqlite3_free(res.zErrMsg);
|
| - }
|
| - db->errCode = res.rc; /* Assume 32-bit assignment is atomic */
|
| - return res.rc;
|
| - }
|
| - sqlite3_free(res.zErrMsg);
|
| - if( rc!=SQLITE_OK ){
|
| - sqlite3_free_table(&res.azResult[1]);
|
| - return rc;
|
| - }
|
| - if( res.nAlloc>res.nData ){
|
| - char **azNew;
|
| - azNew = sqlite3_realloc( res.azResult, sizeof(char*)*res.nData );
|
| - if( azNew==0 ){
|
| - sqlite3_free_table(&res.azResult[1]);
|
| - db->errCode = SQLITE_NOMEM;
|
| - return SQLITE_NOMEM;
|
| - }
|
| - res.azResult = azNew;
|
| - }
|
| - *pazResult = &res.azResult[1];
|
| - if( pnColumn ) *pnColumn = res.nColumn;
|
| - if( pnRow ) *pnRow = res.nRow;
|
| - return rc;
|
| -}
|
| -
|
| -/*
|
| -** This routine frees the space the sqlite3_get_table() malloced.
|
| -*/
|
| -void sqlite3_free_table(
|
| - char **azResult /* Result returned from from sqlite3_get_table() */
|
| -){
|
| - if( azResult ){
|
| - int i, n;
|
| - azResult--;
|
| - assert( azResult!=0 );
|
| - n = SQLITE_PTR_TO_INT(azResult[0]);
|
| - for(i=1; i<n; i++){ if( azResult[i] ) sqlite3_free(azResult[i]); }
|
| - sqlite3_free(azResult);
|
| - }
|
| -}
|
| -
|
| -#endif /* SQLITE_OMIT_GET_TABLE */
|
|
|