| Index: third_party/sqlite/sqlite-src-3080704/src/table.c
|
| diff --git a/third_party/sqlite/sqlite-src-3080704/src/table.c b/third_party/sqlite/sqlite-src-3080704/src/table.c
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..c435b2bc02ae04d118e6d22d5bad9c1aa915c395
|
| --- /dev/null
|
| +++ b/third_party/sqlite/sqlite-src-3080704/src/table.c
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| @@ -0,0 +1,197 @@
|
| +/*
|
| +** 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()
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| +** interface routines. These are just wrappers around the main
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| +** interface routine of sqlite3_exec().
|
| +**
|
| +** These routines are in a separate files so that they will not be linked
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| +** if they are not used.
|
| +*/
|
| +#include "sqliteInt.h"
|
| +#include <stdlib.h>
|
| +#include <string.h>
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| +
|
| +#ifndef SQLITE_OMIT_GET_TABLE
|
| +
|
| +/*
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| +** This structure is used to pass data from sqlite3_get_table() through
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| +** to the callback function is uses to build the result.
|
| +*/
|
| +typedef struct TabResult {
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| + char **azResult; /* Accumulated output */
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| + char *zErrMsg; /* Error message text, if an error occurs */
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| + u32 nAlloc; /* Slots allocated for azResult[] */
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| + u32 nRow; /* Number of rows in the result */
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| + u32 nColumn; /* Number of columns in the result */
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| + u32 nData; /* Slots used in azResult[]. (nRow+1)*nColumn */
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| + int rc; /* Return code from sqlite3_exec() */
|
| +} TabResult;
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| +
|
| +/*
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| +** This routine is called once for each row in the result table. Its job
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| +** is to fill in the TabResult structure appropriately, allocating new
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| +** memory as necessary.
|
| +*/
|
| +static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){
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| + TabResult *p = (TabResult*)pArg; /* Result accumulator */
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| + int need; /* Slots needed in p->azResult[] */
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| + int i; /* Loop counter */
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| + char *z; /* A single column of result */
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| +
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| + /* Make sure there is enough space in p->azResult to hold everything
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| + ** we need to remember from this invocation of the callback.
|
| + */
|
| + if( p->nRow==0 && argv!=0 ){
|
| + need = nCol*2;
|
| + }else{
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| + need = nCol;
|
| + }
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| + if( p->nData + need > p->nAlloc ){
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| + char **azNew;
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| + p->nAlloc = p->nAlloc*2 + need;
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| + azNew = sqlite3_realloc64( p->azResult, sizeof(char*)*p->nAlloc );
|
| + if( azNew==0 ) goto malloc_failed;
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| + p->azResult = azNew;
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| + }
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| +
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| + /* If this is the first row, then generate an extra row containing
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| + ** the names of all columns.
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| + */
|
| + if( p->nRow==0 ){
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| + p->nColumn = nCol;
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| + for(i=0; i<nCol; i++){
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| + z = sqlite3_mprintf("%s", colv[i]);
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| + if( z==0 ) goto malloc_failed;
|
| + p->azResult[p->nData++] = z;
|
| + }
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| + }else if( (int)p->nColumn!=nCol ){
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| + sqlite3_free(p->zErrMsg);
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| + p->zErrMsg = sqlite3_mprintf(
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| + "sqlite3_get_table() called with two or more incompatible queries"
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| + );
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| + p->rc = SQLITE_ERROR;
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| + return 1;
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| + }
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| +
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| + /* Copy over the row data
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| + */
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| + if( argv!=0 ){
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| + for(i=0; i<nCol; i++){
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| + if( argv[i]==0 ){
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| + z = 0;
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| + }else{
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| + int n = sqlite3Strlen30(argv[i])+1;
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| + z = sqlite3_malloc( n );
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| + if( z==0 ) goto malloc_failed;
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| + memcpy(z, argv[i], n);
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| + }
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| + p->azResult[p->nData++] = z;
|
| + }
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| + p->nRow++;
|
| + }
|
| + return 0;
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| +
|
| +malloc_failed:
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| + p->rc = SQLITE_NOMEM;
|
| + return 1;
|
| +}
|
| +
|
| +/*
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| +** Query the database. But instead of invoking a callback for each row,
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| +** malloc() for space to hold the result and return the entire results
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| +** at the conclusion of the call.
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| +**
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| +** The result that is written to ***pazResult is held in memory obtained
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| +** from malloc(). But the caller cannot free this memory directly.
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| +** Instead, the entire table should be passed to sqlite3_free_table() when
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| +** the calling procedure is finished using it.
|
| +*/
|
| +int sqlite3_get_table(
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| + sqlite3 *db, /* The database on which the SQL executes */
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| + const char *zSql, /* The SQL to be executed */
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| + char ***pazResult, /* Write the result table here */
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| + int *pnRow, /* Write the number of rows in the result here */
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| + int *pnColumn, /* Write the number of columns of result here */
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| + char **pzErrMsg /* Write error messages here */
|
| +){
|
| + int rc;
|
| + TabResult res;
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| +
|
| + *pazResult = 0;
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| + if( pnColumn ) *pnColumn = 0;
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| + if( pnRow ) *pnRow = 0;
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| + if( pzErrMsg ) *pzErrMsg = 0;
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| + res.zErrMsg = 0;
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| + res.nRow = 0;
|
| + res.nColumn = 0;
|
| + res.nData = 1;
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| + 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 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 */
|
|
|