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-rw-r--r--ext/pdo_sqlite/sqlite/src/pragma.c969
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diff --git a/ext/pdo_sqlite/sqlite/src/pragma.c b/ext/pdo_sqlite/sqlite/src/pragma.c
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--- a/ext/pdo_sqlite/sqlite/src/pragma.c
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-/*
-** 2003 April 6
-**
-** 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 code used to implement the PRAGMA command.
-**
-** $Id$
-*/
-#include "sqliteInt.h"
-#include "os.h"
-#include <ctype.h>
-
-/* Ignore this whole file if pragmas are disabled
-*/
-#if !defined(SQLITE_OMIT_PRAGMA) && !defined(SQLITE_OMIT_PARSER)
-
-#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
-# include "pager.h"
-# include "btree.h"
-#endif
-
-/*
-** Interpret the given string as a safety level. Return 0 for OFF,
-** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or
-** unrecognized string argument.
-**
-** Note that the values returned are one less that the values that
-** should be passed into sqlite3BtreeSetSafetyLevel(). The is done
-** to support legacy SQL code. The safety level used to be boolean
-** and older scripts may have used numbers 0 for OFF and 1 for ON.
-*/
-static int getSafetyLevel(const char *z){
- /* 123456789 123456789 */
- static const char zText[] = "onoffalseyestruefull";
- static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 16};
- static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 4};
- static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 2};
- int i, n;
- if( isdigit(*z) ){
- return atoi(z);
- }
- n = strlen(z);
- for(i=0; i<sizeof(iLength); i++){
- if( iLength[i]==n && sqlite3StrNICmp(&zText[iOffset[i]],z,n)==0 ){
- return iValue[i];
- }
- }
- return 1;
-}
-
-/*
-** Interpret the given string as a boolean value.
-*/
-static int getBoolean(const char *z){
- return getSafetyLevel(z)&1;
-}
-
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
-/*
-** Interpret the given string as a temp db location. Return 1 for file
-** backed temporary databases, 2 for the Red-Black tree in memory database
-** and 0 to use the compile-time default.
-*/
-static int getTempStore(const char *z){
- if( z[0]>='0' && z[0]<='2' ){
- return z[0] - '0';
- }else if( sqlite3StrICmp(z, "file")==0 ){
- return 1;
- }else if( sqlite3StrICmp(z, "memory")==0 ){
- return 2;
- }else{
- return 0;
- }
-}
-#endif /* SQLITE_PAGER_PRAGMAS */
-
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
-/*
-** Invalidate temp storage, either when the temp storage is changed
-** from default, or when 'file' and the temp_store_directory has changed
-*/
-static int invalidateTempStorage(Parse *pParse){
- sqlite3 *db = pParse->db;
- if( db->aDb[1].pBt!=0 ){
- if( db->flags & SQLITE_InTrans ){
- sqlite3ErrorMsg(pParse, "temporary storage cannot be changed "
- "from within a transaction");
- return SQLITE_ERROR;
- }
- sqlite3BtreeClose(db->aDb[1].pBt);
- db->aDb[1].pBt = 0;
- sqlite3ResetInternalSchema(db, 0);
- }
- return SQLITE_OK;
-}
-#endif /* SQLITE_PAGER_PRAGMAS */
-
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
-/*
-** If the TEMP database is open, close it and mark the database schema
-** as needing reloading. This must be done when using the TEMP_STORE
-** or DEFAULT_TEMP_STORE pragmas.
-*/
-static int changeTempStorage(Parse *pParse, const char *zStorageType){
- int ts = getTempStore(zStorageType);
- sqlite3 *db = pParse->db;
- if( db->temp_store==ts ) return SQLITE_OK;
- if( invalidateTempStorage( pParse ) != SQLITE_OK ){
- return SQLITE_ERROR;
- }
- db->temp_store = ts;
- return SQLITE_OK;
-}
-#endif /* SQLITE_PAGER_PRAGMAS */
-
-/*
-** Generate code to return a single integer value.
-*/
-static void returnSingleInt(Parse *pParse, const char *zLabel, int value){
- Vdbe *v = sqlite3GetVdbe(pParse);
- sqlite3VdbeAddOp(v, OP_Integer, value, 0);
- if( pParse->explain==0 ){
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, P3_STATIC);
- }
- sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
-}
-
-#ifndef SQLITE_OMIT_FLAG_PRAGMAS
-/*
-** Check to see if zRight and zLeft refer to a pragma that queries
-** or changes one of the flags in db->flags. Return 1 if so and 0 if not.
-** Also, implement the pragma.
-*/
-static int flagPragma(Parse *pParse, const char *zLeft, const char *zRight){
- static const struct sPragmaType {
- const char *zName; /* Name of the pragma */
- int mask; /* Mask for the db->flags value */
- } aPragma[] = {
- { "vdbe_trace", SQLITE_VdbeTrace },
- { "sql_trace", SQLITE_SqlTrace },
- { "vdbe_listing", SQLITE_VdbeListing },
- { "full_column_names", SQLITE_FullColNames },
- { "short_column_names", SQLITE_ShortColNames },
- { "count_changes", SQLITE_CountRows },
- { "empty_result_callbacks", SQLITE_NullCallback },
- { "legacy_file_format", SQLITE_LegacyFileFmt },
- { "fullfsync", SQLITE_FullFSync },
-#ifndef SQLITE_OMIT_CHECK
- { "ignore_check_constraints", SQLITE_IgnoreChecks },
-#endif
- /* The following is VERY experimental */
- { "writable_schema", SQLITE_WriteSchema },
- { "omit_readlock", SQLITE_NoReadlock },
-
- /* TODO: Maybe it shouldn't be possible to change the ReadUncommitted
- ** flag if there are any active statements. */
- { "read_uncommitted", SQLITE_ReadUncommitted },
- };
- int i;
- const struct sPragmaType *p;
- for(i=0, p=aPragma; i<sizeof(aPragma)/sizeof(aPragma[0]); i++, p++){
- if( sqlite3StrICmp(zLeft, p->zName)==0 ){
- sqlite3 *db = pParse->db;
- Vdbe *v;
- v = sqlite3GetVdbe(pParse);
- if( v ){
- if( zRight==0 ){
- returnSingleInt(pParse, p->zName, (db->flags & p->mask)!=0 );
- }else{
- if( getBoolean(zRight) ){
- db->flags |= p->mask;
- }else{
- db->flags &= ~p->mask;
- }
- }
- }
- return 1;
- }
- }
- return 0;
-}
-#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
-
-/*
-** Process a pragma statement.
-**
-** Pragmas are of this form:
-**
-** PRAGMA [database.]id [= value]
-**
-** The identifier might also be a string. The value is a string, and
-** identifier, or a number. If minusFlag is true, then the value is
-** a number that was preceded by a minus sign.
-**
-** If the left side is "database.id" then pId1 is the database name
-** and pId2 is the id. If the left side is just "id" then pId1 is the
-** id and pId2 is any empty string.
-*/
-void sqlite3Pragma(
- Parse *pParse,
- Token *pId1, /* First part of [database.]id field */
- Token *pId2, /* Second part of [database.]id field, or NULL */
- Token *pValue, /* Token for <value>, or NULL */
- int minusFlag /* True if a '-' sign preceded <value> */
-){
- char *zLeft = 0; /* Nul-terminated UTF-8 string <id> */
- char *zRight = 0; /* Nul-terminated UTF-8 string <value>, or NULL */
- const char *zDb = 0; /* The database name */
- Token *pId; /* Pointer to <id> token */
- int iDb; /* Database index for <database> */
- sqlite3 *db = pParse->db;
- Db *pDb;
- Vdbe *v = sqlite3GetVdbe(pParse);
- if( v==0 ) return;
-
- /* Interpret the [database.] part of the pragma statement. iDb is the
- ** index of the database this pragma is being applied to in db.aDb[]. */
- iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId);
- if( iDb<0 ) return;
- pDb = &db->aDb[iDb];
-
- /* If the temp database has been explicitly named as part of the
- ** pragma, make sure it is open.
- */
- if( iDb==1 && sqlite3OpenTempDatabase(pParse) ){
- return;
- }
-
- zLeft = sqlite3NameFromToken(pId);
- if( !zLeft ) return;
- if( minusFlag ){
- zRight = sqlite3MPrintf("-%T", pValue);
- }else{
- zRight = sqlite3NameFromToken(pValue);
- }
-
- zDb = ((iDb>0)?pDb->zName:0);
- if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
- goto pragma_out;
- }
-
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
- /*
- ** PRAGMA [database.]default_cache_size
- ** PRAGMA [database.]default_cache_size=N
- **
- ** The first form reports the current persistent setting for the
- ** page cache size. The value returned is the maximum number of
- ** pages in the page cache. The second form sets both the current
- ** page cache size value and the persistent page cache size value
- ** stored in the database file.
- **
- ** The default cache size is stored in meta-value 2 of page 1 of the
- ** database file. The cache size is actually the absolute value of
- ** this memory location. The sign of meta-value 2 determines the
- ** synchronous setting. A negative value means synchronous is off
- ** and a positive value means synchronous is on.
- */
- if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){
- static const VdbeOpList getCacheSize[] = {
- { OP_ReadCookie, 0, 2, 0}, /* 0 */
- { OP_AbsValue, 0, 0, 0},
- { OP_Dup, 0, 0, 0},
- { OP_Integer, 0, 0, 0},
- { OP_Ne, 0, 6, 0},
- { OP_Integer, 0, 0, 0}, /* 5 */
- { OP_Callback, 1, 0, 0},
- };
- int addr;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- if( !zRight ){
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", P3_STATIC);
- addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize);
- sqlite3VdbeChangeP1(v, addr, iDb);
- sqlite3VdbeChangeP1(v, addr+5, MAX_PAGES);
- }else{
- int size = atoi(zRight);
- if( size<0 ) size = -size;
- sqlite3BeginWriteOperation(pParse, 0, iDb);
- sqlite3VdbeAddOp(v, OP_Integer, size, 0);
- sqlite3VdbeAddOp(v, OP_ReadCookie, iDb, 2);
- addr = sqlite3VdbeAddOp(v, OP_Integer, 0, 0);
- sqlite3VdbeAddOp(v, OP_Ge, 0, addr+3);
- sqlite3VdbeAddOp(v, OP_Negative, 0, 0);
- sqlite3VdbeAddOp(v, OP_SetCookie, iDb, 2);
- pDb->pSchema->cache_size = size;
- sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
- }
- }else
-
- /*
- ** PRAGMA [database.]page_size
- ** PRAGMA [database.]page_size=N
- **
- ** The first form reports the current setting for the
- ** database page size in bytes. The second form sets the
- ** database page size value. The value can only be set if
- ** the database has not yet been created.
- */
- if( sqlite3StrICmp(zLeft,"page_size")==0 ){
- Btree *pBt = pDb->pBt;
- if( !zRight ){
- int size = pBt ? sqlite3BtreeGetPageSize(pBt) : 0;
- returnSingleInt(pParse, "page_size", size);
- }else{
- sqlite3BtreeSetPageSize(pBt, atoi(zRight), -1);
- }
- }else
-#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
-
- /*
- ** PRAGMA [database.]auto_vacuum
- ** PRAGMA [database.]auto_vacuum=N
- **
- ** Get or set the (boolean) value of the database 'auto-vacuum' parameter.
- */
-#ifndef SQLITE_OMIT_AUTOVACUUM
- if( sqlite3StrICmp(zLeft,"auto_vacuum")==0 ){
- Btree *pBt = pDb->pBt;
- if( !zRight ){
- int auto_vacuum =
- pBt ? sqlite3BtreeGetAutoVacuum(pBt) : SQLITE_DEFAULT_AUTOVACUUM;
- returnSingleInt(pParse, "auto_vacuum", auto_vacuum);
- }else{
- sqlite3BtreeSetAutoVacuum(pBt, getBoolean(zRight));
- }
- }else
-#endif
-
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
- /*
- ** PRAGMA [database.]cache_size
- ** PRAGMA [database.]cache_size=N
- **
- ** The first form reports the current local setting for the
- ** page cache size. The local setting can be different from
- ** the persistent cache size value that is stored in the database
- ** file itself. The value returned is the maximum number of
- ** pages in the page cache. The second form sets the local
- ** page cache size value. It does not change the persistent
- ** cache size stored on the disk so the cache size will revert
- ** to its default value when the database is closed and reopened.
- ** N should be a positive integer.
- */
- if( sqlite3StrICmp(zLeft,"cache_size")==0 ){
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- if( !zRight ){
- returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
- }else{
- int size = atoi(zRight);
- if( size<0 ) size = -size;
- pDb->pSchema->cache_size = size;
- sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
- }
- }else
-
- /*
- ** PRAGMA temp_store
- ** PRAGMA temp_store = "default"|"memory"|"file"
- **
- ** Return or set the local value of the temp_store flag. Changing
- ** the local value does not make changes to the disk file and the default
- ** value will be restored the next time the database is opened.
- **
- ** Note that it is possible for the library compile-time options to
- ** override this setting
- */
- if( sqlite3StrICmp(zLeft, "temp_store")==0 ){
- if( !zRight ){
- returnSingleInt(pParse, "temp_store", db->temp_store);
- }else{
- changeTempStorage(pParse, zRight);
- }
- }else
-
- /*
- ** PRAGMA temp_store_directory
- ** PRAGMA temp_store_directory = ""|"directory_name"
- **
- ** Return or set the local value of the temp_store_directory flag. Changing
- ** the value sets a specific directory to be used for temporary files.
- ** Setting to a null string reverts to the default temporary directory search.
- ** If temporary directory is changed, then invalidateTempStorage.
- **
- */
- if( sqlite3StrICmp(zLeft, "temp_store_directory")==0 ){
- if( !zRight ){
- if( sqlite3_temp_directory ){
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
- "temp_store_directory", P3_STATIC);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, sqlite3_temp_directory, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
- }
- }else{
- if( zRight[0] && !sqlite3OsIsDirWritable(zRight) ){
- sqlite3ErrorMsg(pParse, "not a writable directory");
- goto pragma_out;
- }
- if( TEMP_STORE==0
- || (TEMP_STORE==1 && db->temp_store<=1)
- || (TEMP_STORE==2 && db->temp_store==1)
- ){
- invalidateTempStorage(pParse);
- }
- sqliteFree(sqlite3_temp_directory);
- if( zRight[0] ){
- sqlite3_temp_directory = zRight;
- zRight = 0;
- }else{
- sqlite3_temp_directory = 0;
- }
- }
- }else
-
- /*
- ** PRAGMA [database.]synchronous
- ** PRAGMA [database.]synchronous=OFF|ON|NORMAL|FULL
- **
- ** Return or set the local value of the synchronous flag. Changing
- ** the local value does not make changes to the disk file and the
- ** default value will be restored the next time the database is
- ** opened.
- */
- if( sqlite3StrICmp(zLeft,"synchronous")==0 ){
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- if( !zRight ){
- returnSingleInt(pParse, "synchronous", pDb->safety_level-1);
- }else{
- if( !db->autoCommit ){
- sqlite3ErrorMsg(pParse,
- "Safety level may not be changed inside a transaction");
- }else{
- pDb->safety_level = getSafetyLevel(zRight)+1;
- }
- }
- }else
-#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
-
-#ifndef SQLITE_OMIT_FLAG_PRAGMAS
- if( flagPragma(pParse, zLeft, zRight) ){
- /* The flagPragma() subroutine also generates any necessary code
- ** there is nothing more to do here */
- }else
-#endif /* SQLITE_OMIT_FLAG_PRAGMAS */
-
-#ifndef SQLITE_OMIT_SCHEMA_PRAGMAS
- /*
- ** PRAGMA table_info(<table>)
- **
- ** Return a single row for each column of the named table. The columns of
- ** the returned data set are:
- **
- ** cid: Column id (numbered from left to right, starting at 0)
- ** name: Column name
- ** type: Column declaration type.
- ** notnull: True if 'NOT NULL' is part of column declaration
- ** dflt_value: The default value for the column, if any.
- */
- if( sqlite3StrICmp(zLeft, "table_info")==0 && zRight ){
- Table *pTab;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- pTab = sqlite3FindTable(db, zRight, zDb);
- if( pTab ){
- int i;
- Column *pCol;
- sqlite3VdbeSetNumCols(v, 6);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
- sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", P3_STATIC);
- sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", P3_STATIC);
- sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", P3_STATIC);
- sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", P3_STATIC);
- sqlite3ViewGetColumnNames(pParse, pTab);
- for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
- sqlite3VdbeAddOp(v, OP_Integer, i, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, pCol->zName, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0,
- pCol->zType ? pCol->zType : "", 0);
- sqlite3VdbeAddOp(v, OP_Integer, pCol->notNull, 0);
- sqlite3ExprCode(pParse, pCol->pDflt);
- sqlite3VdbeAddOp(v, OP_Integer, pCol->isPrimKey, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 6, 0);
- }
- }
- }else
-
- if( sqlite3StrICmp(zLeft, "index_info")==0 && zRight ){
- Index *pIdx;
- Table *pTab;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- pIdx = sqlite3FindIndex(db, zRight, zDb);
- if( pIdx ){
- int i;
- pTab = pIdx->pTable;
- sqlite3VdbeSetNumCols(v, 3);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", P3_STATIC);
- sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", P3_STATIC);
- for(i=0; i<pIdx->nColumn; i++){
- int cnum = pIdx->aiColumn[i];
- sqlite3VdbeAddOp(v, OP_Integer, i, 0);
- sqlite3VdbeAddOp(v, OP_Integer, cnum, 0);
- assert( pTab->nCol>cnum );
- sqlite3VdbeOp3(v, OP_String8, 0, 0, pTab->aCol[cnum].zName, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
- }
- }
- }else
-
- if( sqlite3StrICmp(zLeft, "index_list")==0 && zRight ){
- Index *pIdx;
- Table *pTab;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- pTab = sqlite3FindTable(db, zRight, zDb);
- if( pTab ){
- v = sqlite3GetVdbe(pParse);
- pIdx = pTab->pIndex;
- if( pIdx ){
- int i = 0;
- sqlite3VdbeSetNumCols(v, 3);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
- sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", P3_STATIC);
- while(pIdx){
- sqlite3VdbeAddOp(v, OP_Integer, i, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, pIdx->zName, 0);
- sqlite3VdbeAddOp(v, OP_Integer, pIdx->onError!=OE_None, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
- ++i;
- pIdx = pIdx->pNext;
- }
- }
- }
- }else
-
- if( sqlite3StrICmp(zLeft, "database_list")==0 ){
- int i;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- sqlite3VdbeSetNumCols(v, 3);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
- sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", P3_STATIC);
- for(i=0; i<db->nDb; i++){
- if( db->aDb[i].pBt==0 ) continue;
- assert( db->aDb[i].zName!=0 );
- sqlite3VdbeAddOp(v, OP_Integer, i, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, db->aDb[i].zName, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0,
- sqlite3BtreeGetFilename(db->aDb[i].pBt), 0);
- sqlite3VdbeAddOp(v, OP_Callback, 3, 0);
- }
- }else
-
- if( sqlite3StrICmp(zLeft, "collation_list")==0 ){
- int i = 0;
- HashElem *p;
- sqlite3VdbeSetNumCols(v, 2);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", P3_STATIC);
- for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
- CollSeq *pColl = (CollSeq *)sqliteHashData(p);
- sqlite3VdbeAddOp(v, OP_Integer, i++, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, pColl->zName, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 2, 0);
- }
- }else
-#endif /* SQLITE_OMIT_SCHEMA_PRAGMAS */
-
-#ifndef SQLITE_OMIT_FOREIGN_KEY
- if( sqlite3StrICmp(zLeft, "foreign_key_list")==0 && zRight ){
- FKey *pFK;
- Table *pTab;
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- pTab = sqlite3FindTable(db, zRight, zDb);
- if( pTab ){
- v = sqlite3GetVdbe(pParse);
- pFK = pTab->pFKey;
- if( pFK ){
- int i = 0;
- sqlite3VdbeSetNumCols(v, 5);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", P3_STATIC);
- sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", P3_STATIC);
- sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", P3_STATIC);
- sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", P3_STATIC);
- while(pFK){
- int j;
- for(j=0; j<pFK->nCol; j++){
- char *zCol = pFK->aCol[j].zCol;
- sqlite3VdbeAddOp(v, OP_Integer, i, 0);
- sqlite3VdbeAddOp(v, OP_Integer, j, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0, pFK->zTo, 0);
- sqlite3VdbeOp3(v, OP_String8, 0, 0,
- pTab->aCol[pFK->aCol[j].iFrom].zName, 0);
- sqlite3VdbeOp3(v, zCol ? OP_String8 : OP_Null, 0, 0, zCol, 0);
- sqlite3VdbeAddOp(v, OP_Callback, 5, 0);
- }
- ++i;
- pFK = pFK->pNextFrom;
- }
- }
- }
- }else
-#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
-
-#ifndef NDEBUG
- if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
- extern void sqlite3ParserTrace(FILE*, char *);
- if( zRight ){
- if( getBoolean(zRight) ){
- sqlite3ParserTrace(stderr, "parser: ");
- }else{
- sqlite3ParserTrace(0, 0);
- }
- }
- }else
-#endif
-
- /* Reinstall the LIKE and GLOB functions. The variant of LIKE
- ** used will be case sensitive or not depending on the RHS.
- */
- if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){
- if( zRight ){
- sqlite3RegisterLikeFunctions(db, getBoolean(zRight));
- }
- }else
-
-#ifndef SQLITE_OMIT_INTEGRITY_CHECK
- if( sqlite3StrICmp(zLeft, "integrity_check")==0 ){
- int i, j, addr;
-
- /* Code that appears at the end of the integrity check. If no error
- ** messages have been generated, output OK. Otherwise output the
- ** error message
- */
- static const VdbeOpList endCode[] = {
- { OP_MemLoad, 0, 0, 0},
- { OP_Integer, 0, 0, 0},
- { OP_Ne, 0, 0, 0}, /* 2 */
- { OP_String8, 0, 0, "ok"},
- { OP_Callback, 1, 0, 0},
- };
-
- /* Initialize the VDBE program */
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", P3_STATIC);
- sqlite3VdbeAddOp(v, OP_MemInt, 0, 0); /* Initialize error count to 0 */
-
- /* Do an integrity check on each database file */
- for(i=0; i<db->nDb; i++){
- HashElem *x;
- Hash *pTbls;
- int cnt = 0;
-
- if( OMIT_TEMPDB && i==1 ) continue;
-
- sqlite3CodeVerifySchema(pParse, i);
-
- /* Do an integrity check of the B-Tree
- */
- pTbls = &db->aDb[i].pSchema->tblHash;
- for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
- Table *pTab = sqliteHashData(x);
- Index *pIdx;
- sqlite3VdbeAddOp(v, OP_Integer, pTab->tnum, 0);
- cnt++;
- for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- sqlite3VdbeAddOp(v, OP_Integer, pIdx->tnum, 0);
- cnt++;
- }
- }
- assert( cnt>0 );
- sqlite3VdbeAddOp(v, OP_IntegrityCk, cnt, i);
- sqlite3VdbeAddOp(v, OP_Dup, 0, 1);
- addr = sqlite3VdbeOp3(v, OP_String8, 0, 0, "ok", P3_STATIC);
- sqlite3VdbeAddOp(v, OP_Eq, 0, addr+7);
- sqlite3VdbeOp3(v, OP_String8, 0, 0,
- sqlite3MPrintf("*** in database %s ***\n", db->aDb[i].zName),
- P3_DYNAMIC);
- sqlite3VdbeAddOp(v, OP_Pull, 1, 0);
- sqlite3VdbeAddOp(v, OP_Concat, 0, 1);
- sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
- sqlite3VdbeAddOp(v, OP_MemIncr, 1, 0);
-
- /* Make sure all the indices are constructed correctly.
- */
- sqlite3CodeVerifySchema(pParse, i);
- for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
- Table *pTab = sqliteHashData(x);
- Index *pIdx;
- int loopTop;
-
- if( pTab->pIndex==0 ) continue;
- sqlite3OpenTableAndIndices(pParse, pTab, 1, OP_OpenRead);
- sqlite3VdbeAddOp(v, OP_MemInt, 0, 1);
- loopTop = sqlite3VdbeAddOp(v, OP_Rewind, 1, 0);
- sqlite3VdbeAddOp(v, OP_MemIncr, 1, 1);
- for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
- int jmp2;
- static const VdbeOpList idxErr[] = {
- { OP_MemIncr, 1, 0, 0},
- { OP_String8, 0, 0, "rowid "},
- { OP_Rowid, 1, 0, 0},
- { OP_String8, 0, 0, " missing from index "},
- { OP_String8, 0, 0, 0}, /* 4 */
- { OP_Concat, 2, 0, 0},
- { OP_Callback, 1, 0, 0},
- };
- sqlite3GenerateIndexKey(v, pIdx, 1);
- jmp2 = sqlite3VdbeAddOp(v, OP_Found, j+2, 0);
- addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr);
- sqlite3VdbeChangeP3(v, addr+4, pIdx->zName, P3_STATIC);
- sqlite3VdbeJumpHere(v, jmp2);
- }
- sqlite3VdbeAddOp(v, OP_Next, 1, loopTop+1);
- sqlite3VdbeJumpHere(v, loopTop);
- for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
- static const VdbeOpList cntIdx[] = {
- { OP_MemInt, 0, 2, 0},
- { OP_Rewind, 0, 0, 0}, /* 1 */
- { OP_MemIncr, 1, 2, 0},
- { OP_Next, 0, 0, 0}, /* 3 */
- { OP_MemLoad, 1, 0, 0},
- { OP_MemLoad, 2, 0, 0},
- { OP_Eq, 0, 0, 0}, /* 6 */
- { OP_MemIncr, 1, 0, 0},
- { OP_String8, 0, 0, "wrong # of entries in index "},
- { OP_String8, 0, 0, 0}, /* 9 */
- { OP_Concat, 0, 0, 0},
- { OP_Callback, 1, 0, 0},
- };
- if( pIdx->tnum==0 ) continue;
- addr = sqlite3VdbeAddOpList(v, ArraySize(cntIdx), cntIdx);
- sqlite3VdbeChangeP1(v, addr+1, j+2);
- sqlite3VdbeChangeP2(v, addr+1, addr+4);
- sqlite3VdbeChangeP1(v, addr+3, j+2);
- sqlite3VdbeChangeP2(v, addr+3, addr+2);
- sqlite3VdbeJumpHere(v, addr+6);
- sqlite3VdbeChangeP3(v, addr+9, pIdx->zName, P3_STATIC);
- }
- }
- }
- addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode);
- sqlite3VdbeJumpHere(v, addr+2);
- }else
-#endif /* SQLITE_OMIT_INTEGRITY_CHECK */
-
-#ifndef SQLITE_OMIT_UTF16
- /*
- ** PRAGMA encoding
- ** PRAGMA encoding = "utf-8"|"utf-16"|"utf-16le"|"utf-16be"
- **
- ** In it's first form, this pragma returns the encoding of the main
- ** database. If the database is not initialized, it is initialized now.
- **
- ** The second form of this pragma is a no-op if the main database file
- ** has not already been initialized. In this case it sets the default
- ** encoding that will be used for the main database file if a new file
- ** is created. If an existing main database file is opened, then the
- ** default text encoding for the existing database is used.
- **
- ** In all cases new databases created using the ATTACH command are
- ** created to use the same default text encoding as the main database. If
- ** the main database has not been initialized and/or created when ATTACH
- ** is executed, this is done before the ATTACH operation.
- **
- ** In the second form this pragma sets the text encoding to be used in
- ** new database files created using this database handle. It is only
- ** useful if invoked immediately after the main database i
- */
- if( sqlite3StrICmp(zLeft, "encoding")==0 ){
- static const struct EncName {
- char *zName;
- u8 enc;
- } encnames[] = {
- { "UTF-8", SQLITE_UTF8 },
- { "UTF8", SQLITE_UTF8 },
- { "UTF-16le", SQLITE_UTF16LE },
- { "UTF16le", SQLITE_UTF16LE },
- { "UTF-16be", SQLITE_UTF16BE },
- { "UTF16be", SQLITE_UTF16BE },
- { "UTF-16", 0 }, /* SQLITE_UTF16NATIVE */
- { "UTF16", 0 }, /* SQLITE_UTF16NATIVE */
- { 0, 0 }
- };
- const struct EncName *pEnc;
- if( !zRight ){ /* "PRAGMA encoding" */
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- sqlite3VdbeSetNumCols(v, 1);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", P3_STATIC);
- sqlite3VdbeAddOp(v, OP_String8, 0, 0);
- for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
- if( pEnc->enc==ENC(pParse->db) ){
- sqlite3VdbeChangeP3(v, -1, pEnc->zName, P3_STATIC);
- break;
- }
- }
- sqlite3VdbeAddOp(v, OP_Callback, 1, 0);
- }else{ /* "PRAGMA encoding = XXX" */
- /* Only change the value of sqlite.enc if the database handle is not
- ** initialized. If the main database exists, the new sqlite.enc value
- ** will be overwritten when the schema is next loaded. If it does not
- ** already exists, it will be created to use the new encoding value.
- */
- if(
- !(DbHasProperty(db, 0, DB_SchemaLoaded)) ||
- DbHasProperty(db, 0, DB_Empty)
- ){
- for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
- if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
- ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
- break;
- }
- }
- if( !pEnc->zName ){
- sqlite3ErrorMsg(pParse, "unsupported encoding: %s", zRight);
- }
- }
- }
- }else
-#endif /* SQLITE_OMIT_UTF16 */
-
-#ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS
- /*
- ** PRAGMA [database.]schema_version
- ** PRAGMA [database.]schema_version = <integer>
- **
- ** PRAGMA [database.]user_version
- ** PRAGMA [database.]user_version = <integer>
- **
- ** The pragma's schema_version and user_version are used to set or get
- ** the value of the schema-version and user-version, respectively. Both
- ** the schema-version and the user-version are 32-bit signed integers
- ** stored in the database header.
- **
- ** The schema-cookie is usually only manipulated internally by SQLite. It
- ** is incremented by SQLite whenever the database schema is modified (by
- ** creating or dropping a table or index). The schema version is used by
- ** SQLite each time a query is executed to ensure that the internal cache
- ** of the schema used when compiling the SQL query matches the schema of
- ** the database against which the compiled query is actually executed.
- ** Subverting this mechanism by using "PRAGMA schema_version" to modify
- ** the schema-version is potentially dangerous and may lead to program
- ** crashes or database corruption. Use with caution!
- **
- ** The user-version is not used internally by SQLite. It may be used by
- ** applications for any purpose.
- */
- if( sqlite3StrICmp(zLeft, "schema_version")==0 ||
- sqlite3StrICmp(zLeft, "user_version")==0 ){
-
- int iCookie; /* Cookie index. 0 for schema-cookie, 6 for user-cookie. */
- if( zLeft[0]=='s' || zLeft[0]=='S' ){
- iCookie = 0;
- }else{
- iCookie = 5;
- }
-
- if( zRight ){
- /* Write the specified cookie value */
- static const VdbeOpList setCookie[] = {
- { OP_Transaction, 0, 1, 0}, /* 0 */
- { OP_Integer, 0, 0, 0}, /* 1 */
- { OP_SetCookie, 0, 0, 0}, /* 2 */
- };
- int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie);
- sqlite3VdbeChangeP1(v, addr, iDb);
- sqlite3VdbeChangeP1(v, addr+1, atoi(zRight));
- sqlite3VdbeChangeP1(v, addr+2, iDb);
- sqlite3VdbeChangeP2(v, addr+2, iCookie);
- }else{
- /* Read the specified cookie value */
- static const VdbeOpList readCookie[] = {
- { OP_ReadCookie, 0, 0, 0}, /* 0 */
- { OP_Callback, 1, 0, 0}
- };
- int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie);
- sqlite3VdbeChangeP1(v, addr, iDb);
- sqlite3VdbeChangeP2(v, addr, iCookie);
- sqlite3VdbeSetNumCols(v, 1);
- }
- }
-#endif /* SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS */
-
-#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
- /*
- ** Report the current state of file logs for all databases
- */
- if( sqlite3StrICmp(zLeft, "lock_status")==0 ){
- static const char *const azLockName[] = {
- "unlocked", "shared", "reserved", "pending", "exclusive"
- };
- int i;
- Vdbe *v = sqlite3GetVdbe(pParse);
- sqlite3VdbeSetNumCols(v, 2);
- sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", P3_STATIC);
- sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", P3_STATIC);
- for(i=0; i<db->nDb; i++){
- Btree *pBt;
- Pager *pPager;
- if( db->aDb[i].zName==0 ) continue;
- sqlite3VdbeOp3(v, OP_String8, 0, 0, db->aDb[i].zName, P3_STATIC);
- pBt = db->aDb[i].pBt;
- if( pBt==0 || (pPager = sqlite3BtreePager(pBt))==0 ){
- sqlite3VdbeOp3(v, OP_String8, 0, 0, "closed", P3_STATIC);
- }else{
- int j = sqlite3pager_lockstate(pPager);
- sqlite3VdbeOp3(v, OP_String8, 0, 0,
- (j>=0 && j<=4) ? azLockName[j] : "unknown", P3_STATIC);
- }
- sqlite3VdbeAddOp(v, OP_Callback, 2, 0);
- }
- }else
-#endif
-
-#ifdef SQLITE_SSE
- /*
- ** Check to see if the sqlite_statements table exists. Create it
- ** if it does not.
- */
- if( sqlite3StrICmp(zLeft, "create_sqlite_statement_table")==0 ){
- extern int sqlite3CreateStatementsTable(Parse*);
- sqlite3CreateStatementsTable(pParse);
- }else
-#endif
-
-#if SQLITE_HAS_CODEC
- if( sqlite3StrICmp(zLeft, "key")==0 ){
- sqlite3_key(db, zRight, strlen(zRight));
- }else
-#endif
-
- {}
-
- if( v ){
- /* Code an OP_Expire at the end of each PRAGMA program to cause
- ** the VDBE implementing the pragma to expire. Most (all?) pragmas
- ** are only valid for a single execution.
- */
- sqlite3VdbeAddOp(v, OP_Expire, 1, 0);
-
- /*
- ** Reset the safety level, in case the fullfsync flag or synchronous
- ** setting changed.
- */
-#ifndef SQLITE_OMIT_PAGER_PRAGMAS
- if( db->autoCommit ){
- sqlite3BtreeSetSafetyLevel(pDb->pBt, pDb->safety_level,
- (db->flags&SQLITE_FullFSync)!=0);
- }
-#endif
- }
-pragma_out:
- sqliteFree(zLeft);
- sqliteFree(zRight);
-}
-
-#endif /* SQLITE_OMIT_PRAGMA || SQLITE_OMIT_PARSER */
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