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 |
@@ -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() |
+** 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. |
+*/ |
+#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 */ |
+ u32 nAlloc; /* Slots allocated for azResult[] */ |
+ u32 nRow; /* Number of rows in the result */ |
+ u32 nColumn; /* Number of columns in the result */ |
+ u32 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_realloc64( 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( (int)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 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 */ |