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chromium / external / github.com / pwnall / sqlite / refs/heads/IN-operator-improvements / . / src / pragma.c
blob: 9ed5e13eb0fb1c4ff6bfdfc99bf79d4ea73e319d [file] [log] [blame]
/*
** 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.
*/
#include "sqliteInt.h"
#if !defined(SQLITE_ENABLE_LOCKING_STYLE)
# if defined(__APPLE__)
# define SQLITE_ENABLE_LOCKING_STYLE 1
# else
# define SQLITE_ENABLE_LOCKING_STYLE 0
# endif
#endif
/***************************************************************************
** The next block of code, including the PragTyp_XXXX macro definitions and
** the aPragmaName[] object is composed of generated code. DO NOT EDIT.
**
** To add new pragmas, edit the code in ../tool/mkpragmatab.tcl and rerun
** that script. Then copy/paste the output in place of the following:
*/
#define PragTyp_HEADER_VALUE 0
#define PragTyp_AUTO_VACUUM 1
#define PragTyp_FLAG 2
#define PragTyp_BUSY_TIMEOUT 3
#define PragTyp_CACHE_SIZE 4
#define PragTyp_CASE_SENSITIVE_LIKE 5
#define PragTyp_COLLATION_LIST 6
#define PragTyp_COMPILE_OPTIONS 7
#define PragTyp_DATA_STORE_DIRECTORY 8
#define PragTyp_DATABASE_LIST 9
#define PragTyp_DEFAULT_CACHE_SIZE 10
#define PragTyp_ENCODING 11
#define PragTyp_FOREIGN_KEY_CHECK 12
#define PragTyp_FOREIGN_KEY_LIST 13
#define PragTyp_INCREMENTAL_VACUUM 14
#define PragTyp_INDEX_INFO 15
#define PragTyp_INDEX_LIST 16
#define PragTyp_INTEGRITY_CHECK 17
#define PragTyp_JOURNAL_MODE 18
#define PragTyp_JOURNAL_SIZE_LIMIT 19
#define PragTyp_LOCK_PROXY_FILE 20
#define PragTyp_LOCKING_MODE 21
#define PragTyp_PAGE_COUNT 22
#define PragTyp_MMAP_SIZE 23
#define PragTyp_PAGE_SIZE 24
#define PragTyp_SECURE_DELETE 25
#define PragTyp_SHRINK_MEMORY 26
#define PragTyp_SOFT_HEAP_LIMIT 27
#define PragTyp_STATS 28
#define PragTyp_SYNCHRONOUS 29
#define PragTyp_TABLE_INFO 30
#define PragTyp_TEMP_STORE 31
#define PragTyp_TEMP_STORE_DIRECTORY 32
#define PragTyp_WAL_AUTOCHECKPOINT 33
#define PragTyp_WAL_CHECKPOINT 34
#define PragTyp_ACTIVATE_EXTENSIONS 35
#define PragTyp_HEXKEY 36
#define PragTyp_KEY 37
#define PragTyp_REKEY 38
#define PragTyp_LOCK_STATUS 39
#define PragTyp_PARSER_TRACE 40
#define PragFlag_NeedSchema 0x01
static const struct sPragmaNames {
const char *const zName; /* Name of pragma */
u8 ePragTyp; /* PragTyp_XXX value */
u8 mPragFlag; /* Zero or more PragFlag_XXX values */
u32 iArg; /* Extra argument */
} aPragmaNames[] = {
#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
{ /* zName: */ "activate_extensions",
/* ePragTyp: */ PragTyp_ACTIVATE_EXTENSIONS,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
{ /* zName: */ "application_id",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_AUTOVACUUM)
{ /* zName: */ "auto_vacuum",
/* ePragTyp: */ PragTyp_AUTO_VACUUM,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if !defined(SQLITE_OMIT_AUTOMATIC_INDEX)
{ /* zName: */ "automatic_index",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_AutoIndex },
#endif
#endif
{ /* zName: */ "busy_timeout",
/* ePragTyp: */ PragTyp_BUSY_TIMEOUT,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "cache_size",
/* ePragTyp: */ PragTyp_CACHE_SIZE,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "cache_spill",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_CacheSpill },
#endif
{ /* zName: */ "case_sensitive_like",
/* ePragTyp: */ PragTyp_CASE_SENSITIVE_LIKE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "checkpoint_fullfsync",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_CkptFullFSync },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "collation_list",
/* ePragTyp: */ PragTyp_COLLATION_LIST,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_COMPILEOPTION_DIAGS)
{ /* zName: */ "compile_options",
/* ePragTyp: */ PragTyp_COMPILE_OPTIONS,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "count_changes",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_CountRows },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_OS_WIN
{ /* zName: */ "data_store_directory",
/* ePragTyp: */ PragTyp_DATA_STORE_DIRECTORY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "database_list",
/* ePragTyp: */ PragTyp_DATABASE_LIST,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
{ /* zName: */ "default_cache_size",
/* ePragTyp: */ PragTyp_DEFAULT_CACHE_SIZE,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
{ /* zName: */ "defer_foreign_keys",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_DeferFKs },
#endif
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "empty_result_callbacks",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_NullCallback },
#endif
#if !defined(SQLITE_OMIT_UTF16)
{ /* zName: */ "encoding",
/* ePragTyp: */ PragTyp_ENCODING,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
{ /* zName: */ "foreign_key_check",
/* ePragTyp: */ PragTyp_FOREIGN_KEY_CHECK,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FOREIGN_KEY)
{ /* zName: */ "foreign_key_list",
/* ePragTyp: */ PragTyp_FOREIGN_KEY_LIST,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
{ /* zName: */ "foreign_keys",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_ForeignKeys },
#endif
#endif
#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
{ /* zName: */ "freelist_count",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "full_column_names",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_FullColNames },
{ /* zName: */ "fullfsync",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_FullFSync },
#endif
#if defined(SQLITE_HAS_CODEC)
{ /* zName: */ "hexkey",
/* ePragTyp: */ PragTyp_HEXKEY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "hexrekey",
/* ePragTyp: */ PragTyp_HEXKEY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if !defined(SQLITE_OMIT_CHECK)
{ /* zName: */ "ignore_check_constraints",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_IgnoreChecks },
#endif
#endif
#if !defined(SQLITE_OMIT_AUTOVACUUM)
{ /* zName: */ "incremental_vacuum",
/* ePragTyp: */ PragTyp_INCREMENTAL_VACUUM,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "index_info",
/* ePragTyp: */ PragTyp_INDEX_INFO,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
{ /* zName: */ "index_list",
/* ePragTyp: */ PragTyp_INDEX_LIST,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_INTEGRITY_CHECK)
{ /* zName: */ "integrity_check",
/* ePragTyp: */ PragTyp_INTEGRITY_CHECK,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "journal_mode",
/* ePragTyp: */ PragTyp_JOURNAL_MODE,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
{ /* zName: */ "journal_size_limit",
/* ePragTyp: */ PragTyp_JOURNAL_SIZE_LIMIT,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if defined(SQLITE_HAS_CODEC)
{ /* zName: */ "key",
/* ePragTyp: */ PragTyp_KEY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "legacy_file_format",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_LegacyFileFmt },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_ENABLE_LOCKING_STYLE
{ /* zName: */ "lock_proxy_file",
/* ePragTyp: */ PragTyp_LOCK_PROXY_FILE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
{ /* zName: */ "lock_status",
/* ePragTyp: */ PragTyp_LOCK_STATUS,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "locking_mode",
/* ePragTyp: */ PragTyp_LOCKING_MODE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "max_page_count",
/* ePragTyp: */ PragTyp_PAGE_COUNT,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
{ /* zName: */ "mmap_size",
/* ePragTyp: */ PragTyp_MMAP_SIZE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "page_count",
/* ePragTyp: */ PragTyp_PAGE_COUNT,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
{ /* zName: */ "page_size",
/* ePragTyp: */ PragTyp_PAGE_SIZE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if defined(SQLITE_DEBUG)
{ /* zName: */ "parser_trace",
/* ePragTyp: */ PragTyp_PARSER_TRACE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "query_only",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_QueryOnly },
#endif
#if !defined(SQLITE_OMIT_INTEGRITY_CHECK)
{ /* zName: */ "quick_check",
/* ePragTyp: */ PragTyp_INTEGRITY_CHECK,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "read_uncommitted",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_ReadUncommitted },
{ /* zName: */ "recursive_triggers",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_RecTriggers },
#endif
#if defined(SQLITE_HAS_CODEC)
{ /* zName: */ "rekey",
/* ePragTyp: */ PragTyp_REKEY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "reverse_unordered_selects",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_ReverseOrder },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
{ /* zName: */ "schema_version",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "secure_delete",
/* ePragTyp: */ PragTyp_SECURE_DELETE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "short_column_names",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_ShortColNames },
#endif
{ /* zName: */ "shrink_memory",
/* ePragTyp: */ PragTyp_SHRINK_MEMORY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "soft_heap_limit",
/* ePragTyp: */ PragTyp_SOFT_HEAP_LIMIT,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if defined(SQLITE_DEBUG)
{ /* zName: */ "sql_trace",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_SqlTrace },
#endif
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "stats",
/* ePragTyp: */ PragTyp_STATS,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "synchronous",
/* ePragTyp: */ PragTyp_SYNCHRONOUS,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_PRAGMAS)
{ /* zName: */ "table_info",
/* ePragTyp: */ PragTyp_TABLE_INFO,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
{ /* zName: */ "temp_store",
/* ePragTyp: */ PragTyp_TEMP_STORE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "temp_store_directory",
/* ePragTyp: */ PragTyp_TEMP_STORE_DIRECTORY,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
{ /* zName: */ "user_version",
/* ePragTyp: */ PragTyp_HEADER_VALUE,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
#if defined(SQLITE_DEBUG)
{ /* zName: */ "vdbe_addoptrace",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_VdbeAddopTrace },
{ /* zName: */ "vdbe_debug",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_SqlTrace|SQLITE_VdbeListing|SQLITE_VdbeTrace },
{ /* zName: */ "vdbe_eqp",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_VdbeEQP },
{ /* zName: */ "vdbe_listing",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_VdbeListing },
{ /* zName: */ "vdbe_trace",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_VdbeTrace },
#endif
#endif
#if !defined(SQLITE_OMIT_WAL)
{ /* zName: */ "wal_autocheckpoint",
/* ePragTyp: */ PragTyp_WAL_AUTOCHECKPOINT,
/* ePragFlag: */ 0,
/* iArg: */ 0 },
{ /* zName: */ "wal_checkpoint",
/* ePragTyp: */ PragTyp_WAL_CHECKPOINT,
/* ePragFlag: */ PragFlag_NeedSchema,
/* iArg: */ 0 },
#endif
#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
{ /* zName: */ "writable_schema",
/* ePragTyp: */ PragTyp_FLAG,
/* ePragFlag: */ 0,
/* iArg: */ SQLITE_WriteSchema|SQLITE_RecoveryMode },
#endif
};
/* Number of pragmas: 56 on by default, 69 total. */
/* End of the automatically generated pragma table.
***************************************************************************/
/*
** 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. The FULL option is disallowed
** if the omitFull parameter it 1.
**
** 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 u8 getSafetyLevel(const char *z, int omitFull, u8 dflt){
/* 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( sqlite3Isdigit(*z) ){
return (u8)sqlite3Atoi(z);
}
n = sqlite3Strlen30(z);
for(i=0; i<ArraySize(iLength)-omitFull; i++){
if( iLength[i]==n && sqlite3StrNICmp(&zText[iOffset[i]],z,n)==0 ){
return iValue[i];
}
}
return dflt;
}
/*
** Interpret the given string as a boolean value.
*/
u8 sqlite3GetBoolean(const char *z, u8 dflt){
return getSafetyLevel(z,1,dflt)!=0;
}
/* The sqlite3GetBoolean() function is used by other modules but the
** remainder of this file is specific to PRAGMA processing. So omit
** the rest of the file if PRAGMAs are omitted from the build.
*/
#if !defined(SQLITE_OMIT_PRAGMA)
/*
** Interpret the given string as a locking mode value.
*/
static int getLockingMode(const char *z){
if( z ){
if( 0==sqlite3StrICmp(z, "exclusive") ) return PAGER_LOCKINGMODE_EXCLUSIVE;
if( 0==sqlite3StrICmp(z, "normal") ) return PAGER_LOCKINGMODE_NORMAL;
}
return PAGER_LOCKINGMODE_QUERY;
}
#ifndef SQLITE_OMIT_AUTOVACUUM
/*
** Interpret the given string as an auto-vacuum mode value.
**
** The following strings, "none", "full" and "incremental" are
** acceptable, as are their numeric equivalents: 0, 1 and 2 respectively.
*/
static int getAutoVacuum(const char *z){
int i;
if( 0==sqlite3StrICmp(z, "none") ) return BTREE_AUTOVACUUM_NONE;
if( 0==sqlite3StrICmp(z, "full") ) return BTREE_AUTOVACUUM_FULL;
if( 0==sqlite3StrICmp(z, "incremental") ) return BTREE_AUTOVACUUM_INCR;
i = sqlite3Atoi(z);
return (u8)((i>=0&&i<=2)?i:0);
}
#endif /* ifndef SQLITE_OMIT_AUTOVACUUM */
#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->autoCommit || sqlite3BtreeIsInReadTrans(db->aDb[1].pBt) ){
sqlite3ErrorMsg(pParse, "temporary storage cannot be changed "
"from within a transaction");
return SQLITE_ERROR;
}
sqlite3BtreeClose(db->aDb[1].pBt);
db->aDb[1].pBt = 0;
sqlite3ResetAllSchemasOfConnection(db);
}
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 SQLITE_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 = (u8)ts;
return SQLITE_OK;
}
#endif /* SQLITE_PAGER_PRAGMAS */
/*
** Generate code to return a single integer value.
*/
static void returnSingleInt(Parse *pParse, const char *zLabel, i64 value){
Vdbe *v = sqlite3GetVdbe(pParse);
int mem = ++pParse->nMem;
i64 *pI64 = sqlite3DbMallocRaw(pParse->db, sizeof(value));
if( pI64 ){
memcpy(pI64, &value, sizeof(value));
}
sqlite3VdbeAddOp4(v, OP_Int64, 0, mem, 0, (char*)pI64, P4_INT64);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1);
}
/*
** Set the safety_level and pager flags for pager iDb. Or if iDb<0
** set these values for all pagers.
*/
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
static void setAllPagerFlags(sqlite3 *db){
if( db->autoCommit ){
Db *pDb = db->aDb;
int n = db->nDb;
assert( SQLITE_FullFSync==PAGER_FULLFSYNC );
assert( SQLITE_CkptFullFSync==PAGER_CKPT_FULLFSYNC );
assert( SQLITE_CacheSpill==PAGER_CACHESPILL );
assert( (PAGER_FULLFSYNC | PAGER_CKPT_FULLFSYNC | PAGER_CACHESPILL)
== PAGER_FLAGS_MASK );
assert( (pDb->safety_level & PAGER_SYNCHRONOUS_MASK)==pDb->safety_level );
while( (n--) > 0 ){
if( pDb->pBt ){
sqlite3BtreeSetPagerFlags(pDb->pBt,
pDb->safety_level | (db->flags & PAGER_FLAGS_MASK) );
}
pDb++;
}
}
}
#else
# define setAllPagerFlags(X) /* no-op */
#endif
/*
** Return a human-readable name for a constraint resolution action.
*/
#ifndef SQLITE_OMIT_FOREIGN_KEY
static const char *actionName(u8 action){
const char *zName;
switch( action ){
case OE_SetNull: zName = "SET NULL"; break;
case OE_SetDflt: zName = "SET DEFAULT"; break;
case OE_Cascade: zName = "CASCADE"; break;
case OE_Restrict: zName = "RESTRICT"; break;
default: zName = "NO ACTION";
assert( action==OE_None ); break;
}
return zName;
}
#endif
/*
** Parameter eMode must be one of the PAGER_JOURNALMODE_XXX constants
** defined in pager.h. This function returns the associated lowercase
** journal-mode name.
*/
const char *sqlite3JournalModename(int eMode){
static char * const azModeName[] = {
"delete", "persist", "off", "truncate", "memory"
#ifndef SQLITE_OMIT_WAL
, "wal"
#endif
};
assert( PAGER_JOURNALMODE_DELETE==0 );
assert( PAGER_JOURNALMODE_PERSIST==1 );
assert( PAGER_JOURNALMODE_OFF==2 );
assert( PAGER_JOURNALMODE_TRUNCATE==3 );
assert( PAGER_JOURNALMODE_MEMORY==4 );
assert( PAGER_JOURNALMODE_WAL==5 );
assert( eMode>=0 && eMode<=ArraySize(azModeName) );
if( eMode==ArraySize(azModeName) ) return 0;
return azModeName[eMode];
}
/*
** 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 */
char *aFcntl[4]; /* Argument to SQLITE_FCNTL_PRAGMA */
int iDb; /* Database index for <database> */
int lwr, upr, mid; /* Binary search bounds */
int rc; /* return value form SQLITE_FCNTL_PRAGMA */
sqlite3 *db = pParse->db; /* The database connection */
Db *pDb; /* The specific database being pragmaed */
Vdbe *v = sqlite3GetVdbe(pParse); /* Prepared statement */
if( v==0 ) return;
sqlite3VdbeRunOnlyOnce(v);
pParse->nMem = 2;
/* 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(db, pId);
if( !zLeft ) return;
if( minusFlag ){
zRight = sqlite3MPrintf(db, "-%T", pValue);
}else{
zRight = sqlite3NameFromToken(db, pValue);
}
assert( pId2 );
zDb = pId2->n>0 ? pDb->zName : 0;
if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
goto pragma_out;
}
/* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS
** connection. If it returns SQLITE_OK, then assume that the VFS
** handled the pragma and generate a no-op prepared statement.
*/
aFcntl[0] = 0;
aFcntl[1] = zLeft;
aFcntl[2] = zRight;
aFcntl[3] = 0;
db->busyHandler.nBusy = 0;
rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_PRAGMA, (void*)aFcntl);
if( rc==SQLITE_OK ){
if( aFcntl[0] ){
int mem = ++pParse->nMem;
sqlite3VdbeAddOp4(v, OP_String8, 0, mem, 0, aFcntl[0], 0);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "result", SQLITE_STATIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1);
sqlite3_free(aFcntl[0]);
}
goto pragma_out;
}
if( rc!=SQLITE_NOTFOUND ){
if( aFcntl[0] ){
sqlite3ErrorMsg(pParse, "%s", aFcntl[0]);
sqlite3_free(aFcntl[0]);
}
pParse->nErr++;
pParse->rc = rc;
goto pragma_out;
}
/* Locate the pragma in the lookup table */
lwr = 0;
upr = ArraySize(aPragmaNames)-1;
while( lwr<=upr ){
mid = (lwr+upr)/2;
rc = sqlite3_stricmp(zLeft, aPragmaNames[mid].zName);
if( rc==0 ) break;
if( rc<0 ){
upr = mid - 1;
}else{
lwr = mid + 1;
}
}
if( lwr>upr ) goto pragma_out;
/* Make sure the database schema is loaded if the pragma requires that */
if( (aPragmaNames[mid].mPragFlag & PragFlag_NeedSchema)!=0 ){
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
}
/* Jump to the appropriate pragma handler */
switch( aPragmaNames[mid].ePragTyp ){
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
/*
** 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.
**
** Older versions of SQLite would set the default cache size to a
** negative number to indicate synchronous=OFF. These days, synchronous
** is always on by default regardless of the sign of the default cache
** size. But continue to take the absolute value of the default cache
** size of historical compatibility.
*/
case PragTyp_DEFAULT_CACHE_SIZE: {
static const int iLn = VDBE_OFFSET_LINENO(2);
static const VdbeOpList getCacheSize[] = {
{ OP_Transaction, 0, 0, 0}, /* 0 */
{ OP_ReadCookie, 0, 1, BTREE_DEFAULT_CACHE_SIZE}, /* 1 */
{ OP_IfPos, 1, 8, 0},
{ OP_Integer, 0, 2, 0},
{ OP_Subtract, 1, 2, 1},
{ OP_IfPos, 1, 8, 0},
{ OP_Integer, 0, 1, 0}, /* 6 */
{ OP_Noop, 0, 0, 0},
{ OP_ResultRow, 1, 1, 0},
};
int addr;
sqlite3VdbeUsesBtree(v, iDb);
if( !zRight ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", SQLITE_STATIC);
pParse->nMem += 2;
addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize,iLn);
sqlite3VdbeChangeP1(v, addr, iDb);
sqlite3VdbeChangeP1(v, addr+1, iDb);
sqlite3VdbeChangeP1(v, addr+6, SQLITE_DEFAULT_CACHE_SIZE);
}else{
int size = sqlite3AbsInt32(sqlite3Atoi(zRight));
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, size, 1);
sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, 1);
assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
break;
}
#endif /* !SQLITE_OMIT_PAGER_PRAGMAS && !SQLITE_OMIT_DEPRECATED */
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
/*
** 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.
*/
case PragTyp_PAGE_SIZE: {
Btree *pBt = pDb->pBt;
assert( pBt!=0 );
if( !zRight ){
int size = ALWAYS(pBt) ? sqlite3BtreeGetPageSize(pBt) : 0;
returnSingleInt(pParse, "page_size", size);
}else{
/* Malloc may fail when setting the page-size, as there is an internal
** buffer that the pager module resizes using sqlite3_realloc().
*/
db->nextPagesize = sqlite3Atoi(zRight);
if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){
db->mallocFailed = 1;
}
}
break;
}
/*
** PRAGMA [database.]secure_delete
** PRAGMA [database.]secure_delete=ON/OFF
**
** The first form reports the current setting for the
** secure_delete flag. The second form changes the secure_delete
** flag setting and reports thenew value.
*/
case PragTyp_SECURE_DELETE: {
Btree *pBt = pDb->pBt;
int b = -1;
assert( pBt!=0 );
if( zRight ){
b = sqlite3GetBoolean(zRight, 0);
}
if( pId2->n==0 && b>=0 ){
int ii;
for(ii=0; ii<db->nDb; ii++){
sqlite3BtreeSecureDelete(db->aDb[ii].pBt, b);
}
}
b = sqlite3BtreeSecureDelete(pBt, b);
returnSingleInt(pParse, "secure_delete", b);
break;
}
/*
** PRAGMA [database.]max_page_count
** PRAGMA [database.]max_page_count=N
**
** The first form reports the current setting for the
** maximum number of pages in the database file. The
** second form attempts to change this setting. Both
** forms return the current setting.
**
** The absolute value of N is used. This is undocumented and might
** change. The only purpose is to provide an easy way to test
** the sqlite3AbsInt32() function.
**
** PRAGMA [database.]page_count
**
** Return the number of pages in the specified database.
*/
case PragTyp_PAGE_COUNT: {
int iReg;
sqlite3CodeVerifySchema(pParse, iDb);
iReg = ++pParse->nMem;
if( sqlite3Tolower(zLeft[0])=='p' ){
sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg);
}else{
sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg,
sqlite3AbsInt32(sqlite3Atoi(zRight)));
}
sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT);
break;
}
/*
** PRAGMA [database.]locking_mode
** PRAGMA [database.]locking_mode = (normal|exclusive)
*/
case PragTyp_LOCKING_MODE: {
const char *zRet = "normal";
int eMode = getLockingMode(zRight);
if( pId2->n==0 && eMode==PAGER_LOCKINGMODE_QUERY ){
/* Simple "PRAGMA locking_mode;" statement. This is a query for
** the current default locking mode (which may be different to
** the locking-mode of the main database).
*/
eMode = db->dfltLockMode;
}else{
Pager *pPager;
if( pId2->n==0 ){
/* This indicates that no database name was specified as part
** of the PRAGMA command. In this case the locking-mode must be
** set on all attached databases, as well as the main db file.
**
** Also, the sqlite3.dfltLockMode variable is set so that
** any subsequently attached databases also use the specified
** locking mode.
*/
int ii;
assert(pDb==&db->aDb[0]);
for(ii=2; ii<db->nDb; ii++){
pPager = sqlite3BtreePager(db->aDb[ii].pBt);
sqlite3PagerLockingMode(pPager, eMode);
}
db->dfltLockMode = (u8)eMode;
}
pPager = sqlite3BtreePager(pDb->pBt);
eMode = sqlite3PagerLockingMode(pPager, eMode);
}
assert( eMode==PAGER_LOCKINGMODE_NORMAL
|| eMode==PAGER_LOCKINGMODE_EXCLUSIVE );
if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){
zRet = "exclusive";
}
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", SQLITE_STATIC);
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zRet, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
break;
}
/*
** PRAGMA [database.]journal_mode
** PRAGMA [database.]journal_mode =
** (delete|persist|off|truncate|memory|wal|off)
*/
case PragTyp_JOURNAL_MODE: {
int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */
int ii; /* Loop counter */
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "journal_mode", SQLITE_STATIC);
if( zRight==0 ){
/* If there is no "=MODE" part of the pragma, do a query for the
** current mode */
eMode = PAGER_JOURNALMODE_QUERY;
}else{
const char *zMode;
int n = sqlite3Strlen30(zRight);
for(eMode=0; (zMode = sqlite3JournalModename(eMode))!=0; eMode++){
if( sqlite3StrNICmp(zRight, zMode, n)==0 ) break;
}
if( !zMode ){
/* If the "=MODE" part does not match any known journal mode,
** then do a query */
eMode = PAGER_JOURNALMODE_QUERY;
}
}
if( eMode==PAGER_JOURNALMODE_QUERY && pId2->n==0 ){
/* Convert "PRAGMA journal_mode" into "PRAGMA main.journal_mode" */
iDb = 0;
pId2->n = 1;
}
for(ii=db->nDb-1; ii>=0; ii--){
if( db->aDb[ii].pBt && (ii==iDb || pId2->n==0) ){
sqlite3VdbeUsesBtree(v, ii);
sqlite3VdbeAddOp3(v, OP_JournalMode, ii, 1, eMode);
}
}
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
break;
}
/*
** PRAGMA [database.]journal_size_limit
** PRAGMA [database.]journal_size_limit=N
**
** Get or set the size limit on rollback journal files.
*/
case PragTyp_JOURNAL_SIZE_LIMIT: {
Pager *pPager = sqlite3BtreePager(pDb->pBt);
i64 iLimit = -2;
if( zRight ){
sqlite3DecOrHexToI64(zRight, &iLimit);
if( iLimit<-1 ) iLimit = -1;
}
iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit);
returnSingleInt(pParse, "journal_size_limit", iLimit);
break;
}
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
/*
** PRAGMA [database.]auto_vacuum
** PRAGMA [database.]auto_vacuum=N
**
** Get or set the value of the database 'auto-vacuum' parameter.
** The value is one of: 0 NONE 1 FULL 2 INCREMENTAL
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
case PragTyp_AUTO_VACUUM: {
Btree *pBt = pDb->pBt;
assert( pBt!=0 );
if( !zRight ){
returnSingleInt(pParse, "auto_vacuum", sqlite3BtreeGetAutoVacuum(pBt));
}else{
int eAuto = getAutoVacuum(zRight);
assert( eAuto>=0 && eAuto<=2 );
db->nextAutovac = (u8)eAuto;
/* Call SetAutoVacuum() to set initialize the internal auto and
** incr-vacuum flags. This is required in case this connection
** creates the database file. It is important that it is created
** as an auto-vacuum capable db.
*/
rc = sqlite3BtreeSetAutoVacuum(pBt, eAuto);
if( rc==SQLITE_OK && (eAuto==1 || eAuto==2) ){
/* When setting the auto_vacuum mode to either "full" or
** "incremental", write the value of meta[6] in the database
** file. Before writing to meta[6], check that meta[3] indicates
** that this really is an auto-vacuum capable database.
*/
static const int iLn = VDBE_OFFSET_LINENO(2);
static const VdbeOpList setMeta6[] = {
{ OP_Transaction, 0, 1, 0}, /* 0 */
{ OP_ReadCookie, 0, 1, BTREE_LARGEST_ROOT_PAGE},
{ OP_If, 1, 0, 0}, /* 2 */
{ OP_Halt, SQLITE_OK, OE_Abort, 0}, /* 3 */
{ OP_Integer, 0, 1, 0}, /* 4 */
{ OP_SetCookie, 0, BTREE_INCR_VACUUM, 1}, /* 5 */
};
int iAddr;
iAddr = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6, iLn);
sqlite3VdbeChangeP1(v, iAddr, iDb);
sqlite3VdbeChangeP1(v, iAddr+1, iDb);
sqlite3VdbeChangeP2(v, iAddr+2, iAddr+4);
sqlite3VdbeChangeP1(v, iAddr+4, eAuto-1);
sqlite3VdbeChangeP1(v, iAddr+5, iDb);
sqlite3VdbeUsesBtree(v, iDb);
}
}
break;
}
#endif
/*
** PRAGMA [database.]incremental_vacuum(N)
**
** Do N steps of incremental vacuuming on a database.
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
case PragTyp_INCREMENTAL_VACUUM: {
int iLimit, addr;
if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){
iLimit = 0x7fffffff;
}
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, iLimit, 1);
addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb); VdbeCoverage(v);
sqlite3VdbeAddOp1(v, OP_ResultRow, 1);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1);
sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr); VdbeCoverage(v);
sqlite3VdbeJumpHere(v, addr);
break;
}
#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 second form sets the local
** page cache size value. If N is positive then that is the
** number of pages in the cache. If N is negative, then the
** number of pages is adjusted so that the cache uses -N kibibytes
** of memory.
*/
case PragTyp_CACHE_SIZE: {
assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( !zRight ){
returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size);
}else{
int size = sqlite3Atoi(zRight);
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
}
break;
}
/*
** PRAGMA [database.]mmap_size(N)
**
** Used to set mapping size limit. The mapping size limit is
** used to limit the aggregate size of all memory mapped regions of the
** database file. If this parameter is set to zero, then memory mapping
** is not used at all. If N is negative, then the default memory map
** limit determined by sqlite3_config(SQLITE_CONFIG_MMAP_SIZE) is set.
** The parameter N is measured in bytes.
**
** This value is advisory. The underlying VFS is free to memory map
** as little or as much as it wants. Except, if N is set to 0 then the
** upper layers will never invoke the xFetch interfaces to the VFS.
*/
case PragTyp_MMAP_SIZE: {
sqlite3_int64 sz;
#if SQLITE_MAX_MMAP_SIZE>0
assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
if( zRight ){
int ii;
sqlite3DecOrHexToI64(zRight, &sz);
if( sz<0 ) sz = sqlite3GlobalConfig.szMmap;
if( pId2->n==0 ) db->szMmap = sz;
for(ii=db->nDb-1; ii>=0; ii--){
if( db->aDb[ii].pBt && (ii==iDb || pId2->n==0) ){
sqlite3BtreeSetMmapLimit(db->aDb[ii].pBt, sz);
}
}
}
sz = -1;
rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_MMAP_SIZE, &sz);
#else
sz = 0;
rc = SQLITE_OK;
#endif
if( rc==SQLITE_OK ){
returnSingleInt(pParse, "mmap_size", sz);
}else if( rc!=SQLITE_NOTFOUND ){
pParse->nErr++;
pParse->rc = rc;
}
break;
}
/*
** 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
*/
case PragTyp_TEMP_STORE: {
if( !zRight ){
returnSingleInt(pParse, "temp_store", db->temp_store);
}else{
changeTempStorage(pParse, zRight);
}
break;
}
/*
** 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.
**
*/
case PragTyp_TEMP_STORE_DIRECTORY: {
if( !zRight ){
if( sqlite3_temp_directory ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
"temp_store_directory", SQLITE_STATIC);
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_temp_directory, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}
}else{
#ifndef SQLITE_OMIT_WSD
if( zRight[0] ){
int res;
rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res);
if( rc!=SQLITE_OK || res==0 ){
sqlite3ErrorMsg(pParse, "not a writable directory");
goto pragma_out;
}
}
if( SQLITE_TEMP_STORE==0
|| (SQLITE_TEMP_STORE==1 && db->temp_store<=1)
|| (SQLITE_TEMP_STORE==2 && db->temp_store==1)
){
invalidateTempStorage(pParse);
}
sqlite3_free(sqlite3_temp_directory);
if( zRight[0] ){
sqlite3_temp_directory = sqlite3_mprintf("%s", zRight);
}else{
sqlite3_temp_directory = 0;
}
#endif /* SQLITE_OMIT_WSD */
}
break;
}
#if SQLITE_OS_WIN
/*
** PRAGMA data_store_directory
** PRAGMA data_store_directory = ""|"directory_name"
**
** Return or set the local value of the data_store_directory flag. Changing
** the value sets a specific directory to be used for database files that
** were specified with a relative pathname. Setting to a null string reverts
** to the default database directory, which for database files specified with
** a relative path will probably be based on the current directory for the
** process. Database file specified with an absolute path are not impacted
** by this setting, regardless of its value.
**
*/
case PragTyp_DATA_STORE_DIRECTORY: {
if( !zRight ){
if( sqlite3_data_directory ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
"data_store_directory", SQLITE_STATIC);
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_data_directory, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}
}else{
#ifndef SQLITE_OMIT_WSD
if( zRight[0] ){
int res;
rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res);
if( rc!=SQLITE_OK || res==0 ){
sqlite3ErrorMsg(pParse, "not a writable directory");
goto pragma_out;
}
}
sqlite3_free(sqlite3_data_directory);
if( zRight[0] ){
sqlite3_data_directory = sqlite3_mprintf("%s", zRight);
}else{
sqlite3_data_directory = 0;
}
#endif /* SQLITE_OMIT_WSD */
}
break;
}
#endif
#if SQLITE_ENABLE_LOCKING_STYLE
/*
** PRAGMA [database.]lock_proxy_file
** PRAGMA [database.]lock_proxy_file = ":auto:"|"lock_file_path"
**
** Return or set the value of the lock_proxy_file flag. Changing
** the value sets a specific file to be used for database access locks.
**
*/
case PragTyp_LOCK_PROXY_FILE: {
if( !zRight ){
Pager *pPager = sqlite3BtreePager(pDb->pBt);
char *proxy_file_path = NULL;
sqlite3_file *pFile = sqlite3PagerFile(pPager);
sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE,
&proxy_file_path);
if( proxy_file_path ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME,
"lock_proxy_file", SQLITE_STATIC);
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, proxy_file_path, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}
}else{
Pager *pPager = sqlite3BtreePager(pDb->pBt);
sqlite3_file *pFile = sqlite3PagerFile(pPager);
int res;
if( zRight[0] ){
res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE,
zRight);
} else {
res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE,
NULL);
}
if( res!=SQLITE_OK ){
sqlite3ErrorMsg(pParse, "failed to set lock proxy file");
goto pragma_out;
}
}
break;
}
#endif /* SQLITE_ENABLE_LOCKING_STYLE */
/*
** 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.
*/
case PragTyp_SYNCHRONOUS: {
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,0,1)+1;
setAllPagerFlags(db);
}
}
break;
}
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
#ifndef SQLITE_OMIT_FLAG_PRAGMAS
case PragTyp_FLAG: {
if( zRight==0 ){
returnSingleInt(pParse, aPragmaNames[mid].zName,
(db->flags & aPragmaNames[mid].iArg)!=0 );
}else{
int mask = aPragmaNames[mid].iArg; /* Mask of bits to set or clear. */
if( db->autoCommit==0 ){
/* Foreign key support may not be enabled or disabled while not
** in auto-commit mode. */
mask &= ~(SQLITE_ForeignKeys);
}
if( sqlite3GetBoolean(zRight, 0) ){
db->flags |= mask;
}else{
db->flags &= ~mask;
if( mask==SQLITE_DeferFKs ) db->nDeferredImmCons = 0;
}
/* Many of the flag-pragmas modify the code generated by the SQL
** compiler (eg. count_changes). So add an opcode to expire all
** compiled SQL statements after modifying a pragma value.
*/
sqlite3VdbeAddOp2(v, OP_Expire, 0, 0);
setAllPagerFlags(db);
}
break;
}
#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.
*/
case PragTyp_TABLE_INFO: if( zRight ){
Table *pTab;
pTab = sqlite3FindTable(db, zRight, zDb);
if( pTab ){
int i, k;
int nHidden = 0;
Column *pCol;
Index *pPk = sqlite3PrimaryKeyIndex(pTab);
sqlite3VdbeSetNumCols(v, 6);
pParse->nMem = 6;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", SQLITE_STATIC);
sqlite3ViewGetColumnNames(pParse, pTab);
for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
if( IsHiddenColumn(pCol) ){
nHidden++;
continue;
}
sqlite3VdbeAddOp2(v, OP_Integer, i-nHidden, 1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pCol->zName, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
pCol->zType ? pCol->zType : "", 0);
sqlite3VdbeAddOp2(v, OP_Integer, (pCol->notNull ? 1 : 0), 4);
if( pCol->zDflt ){
sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, (char*)pCol->zDflt, 0);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, 5);
}
if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){
k = 0;
}else if( pPk==0 ){
k = 1;
}else{
for(k=1; ALWAYS(k<=pTab->nCol) && pPk->aiColumn[k-1]!=i; k++){}
}
sqlite3VdbeAddOp2(v, OP_Integer, k, 6);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6);
}
}
}
break;
case PragTyp_STATS: {
Index *pIdx;
HashElem *i;
v = sqlite3GetVdbe(pParse);
sqlite3VdbeSetNumCols(v, 4);
pParse->nMem = 4;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "index", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "width", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "height", SQLITE_STATIC);
for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){
Table *pTab = sqliteHashData(i);
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, pTab->zName, 0);
sqlite3VdbeAddOp2(v, OP_Null, 0, 2);
sqlite3VdbeAddOp2(v, OP_Integer,
(int)sqlite3LogEstToInt(pTab->szTabRow), 3);
sqlite3VdbeAddOp2(v, OP_Integer,
(int)sqlite3LogEstToInt(pTab->nRowLogEst), 4);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4);
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0);
sqlite3VdbeAddOp2(v, OP_Integer,
(int)sqlite3LogEstToInt(pIdx->szIdxRow), 3);
sqlite3VdbeAddOp2(v, OP_Integer,
(int)sqlite3LogEstToInt(pIdx->aiRowLogEst[0]), 4);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4);
}
}
}
break;
case PragTyp_INDEX_INFO: if( zRight ){
Index *pIdx;
Table *pTab;
pIdx = sqlite3FindIndex(db, zRight, zDb);
if( pIdx ){
int i;
pTab = pIdx->pTable;
sqlite3VdbeSetNumCols(v, 3);
pParse->nMem = 3;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC);
for(i=0; i<pIdx->nKeyCol; i++){
i16 cnum = pIdx->aiColumn[i];
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2);
assert( pTab->nCol>cnum );
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}
}
}
break;
case PragTyp_INDEX_LIST: if( zRight ){
Index *pIdx;
Table *pTab;
int i;
pTab = sqlite3FindTable(db, zRight, zDb);
if( pTab ){
v = sqlite3GetVdbe(pParse);
sqlite3VdbeSetNumCols(v, 3);
pParse->nMem = 3;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC);
for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0);
sqlite3VdbeAddOp2(v, OP_Integer, IsUniqueIndex(pIdx), 3);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}
}
}
break;
case PragTyp_DATABASE_LIST: {
int i;
sqlite3VdbeSetNumCols(v, 3);
pParse->nMem = 3;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", SQLITE_STATIC);
for(i=0; i<db->nDb; i++){
if( db->aDb[i].pBt==0 ) continue;
assert( db->aDb[i].zName!=0 );
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, db->aDb[i].zName, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
sqlite3BtreeGetFilename(db->aDb[i].pBt), 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}
}
break;
case PragTyp_COLLATION_LIST: {
int i = 0;
HashElem *p;
sqlite3VdbeSetNumCols(v, 2);
pParse->nMem = 2;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC);
for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
CollSeq *pColl = (CollSeq *)sqliteHashData(p);
sqlite3VdbeAddOp2(v, OP_Integer, i++, 1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pColl->zName, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2);
}
}
break;
#endif /* SQLITE_OMIT_SCHEMA_PRAGMAS */
#ifndef SQLITE_OMIT_FOREIGN_KEY
case PragTyp_FOREIGN_KEY_LIST: if( zRight ){
FKey *pFK;
Table *pTab;
pTab = sqlite3FindTable(db, zRight, zDb);
if( pTab ){
v = sqlite3GetVdbe(pParse);
pFK = pTab->pFKey;
if( pFK ){
int i = 0;
sqlite3VdbeSetNumCols(v, 8);
pParse->nMem = 8;
sqlite3CodeVerifySchema(pParse, iDb);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "on_update", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 6, COLNAME_NAME, "on_delete", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 7, COLNAME_NAME, "match", SQLITE_STATIC);
while(pFK){
int j;
for(j=0; j<pFK->nCol; j++){
char *zCol = pFK->aCol[j].zCol;
char *zOnDelete = (char *)actionName(pFK->aAction[0]);
char *zOnUpdate = (char *)actionName(pFK->aAction[1]);
sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
sqlite3VdbeAddOp2(v, OP_Integer, j, 2);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pFK->zTo, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0,
pTab->aCol[pFK->aCol[j].iFrom].zName, 0);
sqlite3VdbeAddOp4(v, zCol ? OP_String8 : OP_Null, 0, 5, 0, zCol, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 6, 0, zOnUpdate, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 7, 0, zOnDelete, 0);
sqlite3VdbeAddOp4(v, OP_String8, 0, 8, 0, "NONE", 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 8);
}
++i;
pFK = pFK->pNextFrom;
}
}
}
}
break;
#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
#ifndef SQLITE_OMIT_FOREIGN_KEY
#ifndef SQLITE_OMIT_TRIGGER
case PragTyp_FOREIGN_KEY_CHECK: {
FKey *pFK; /* A foreign key constraint */
Table *pTab; /* Child table contain "REFERENCES" keyword */
Table *pParent; /* Parent table that child points to */
Index *pIdx; /* Index in the parent table */
int i; /* Loop counter: Foreign key number for pTab */
int j; /* Loop counter: Field of the foreign key */
HashElem *k; /* Loop counter: Next table in schema */
int x; /* result variable */
int regResult; /* 3 registers to hold a result row */
int regKey; /* Register to hold key for checking the FK */
int regRow; /* Registers to hold a row from pTab */
int addrTop; /* Top of a loop checking foreign keys */
int addrOk; /* Jump here if the key is OK */
int *aiCols; /* child to parent column mapping */
regResult = pParse->nMem+1;
pParse->nMem += 4;
regKey = ++pParse->nMem;
regRow = ++pParse->nMem;
v = sqlite3GetVdbe(pParse);
sqlite3VdbeSetNumCols(v, 4);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "rowid", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "parent", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "fkid", SQLITE_STATIC);
sqlite3CodeVerifySchema(pParse, iDb);
k = sqliteHashFirst(&db->aDb[iDb].pSchema->tblHash);
while( k ){
if( zRight ){
pTab = sqlite3LocateTable(pParse, 0, zRight, zDb);
k = 0;
}else{
pTab = (Table*)sqliteHashData(k);
k = sqliteHashNext(k);
}
if( pTab==0 || pTab->pFKey==0 ) continue;
sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName);
if( pTab->nCol+regRow>pParse->nMem ) pParse->nMem = pTab->nCol + regRow;
sqlite3OpenTable(pParse, 0, iDb, pTab, OP_OpenRead);
sqlite3VdbeAddOp4(v, OP_String8, 0, regResult, 0, pTab->zName,
P4_TRANSIENT);
for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){
pParent = sqlite3FindTable(db, pFK->zTo, zDb);
if( pParent==0 ) continue;
pIdx = 0;
sqlite3TableLock(pParse, iDb, pParent->tnum, 0, pParent->zName);
x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, 0);
if( x==0 ){
if( pIdx==0 ){
sqlite3OpenTable(pParse, i, iDb, pParent, OP_OpenRead);
}else{
sqlite3VdbeAddOp3(v, OP_OpenRead, i, pIdx->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
}
}else{
k = 0;
break;
}
}
assert( pParse->nErr>0 || pFK==0 );
if( pFK ) break;
if( pParse->nTab<i ) pParse->nTab = i;
addrTop = sqlite3VdbeAddOp1(v, OP_Rewind, 0); VdbeCoverage(v);
for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){
pParent = sqlite3FindTable(db, pFK->zTo, zDb);
pIdx = 0;
aiCols = 0;
if( pParent ){
x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, &aiCols);
assert( x==0 );
}
addrOk = sqlite3VdbeMakeLabel(v);
if( pParent && pIdx==0 ){
int iKey = pFK->aCol[0].iFrom;
assert( iKey>=0 && iKey<pTab->nCol );
if( iKey!=pTab->iPKey ){
sqlite3VdbeAddOp3(v, OP_Column, 0, iKey, regRow);
sqlite3ColumnDefault(v, pTab, iKey, regRow);
sqlite3VdbeAddOp2(v, OP_IsNull, regRow, addrOk); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_MustBeInt, regRow,
sqlite3VdbeCurrentAddr(v)+3); VdbeCoverage(v);
}else{
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regRow);
}
sqlite3VdbeAddOp3(v, OP_NotExists, i, 0, regRow); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_Goto, 0, addrOk);
sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2);
}else{
for(j=0; j<pFK->nCol; j++){
sqlite3ExprCodeGetColumnOfTable(v, pTab, 0,
aiCols ? aiCols[j] : pFK->aCol[j].iFrom, regRow+j);
sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v);
}
if( pParent ){
sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey,
sqlite3IndexAffinityStr(v,pIdx), pFK->nCol);
sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0);
VdbeCoverage(v);
}
}
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1);
sqlite3VdbeAddOp4(v, OP_String8, 0, regResult+2, 0,
pFK->zTo, P4_TRANSIENT);
sqlite3VdbeAddOp2(v, OP_Integer, i-1, regResult+3);
sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, 4);
sqlite3VdbeResolveLabel(v, addrOk);
sqlite3DbFree(db, aiCols);
}
sqlite3VdbeAddOp2(v, OP_Next, 0, addrTop+1); VdbeCoverage(v);
sqlite3VdbeJumpHere(v, addrTop);
}
}
break;
#endif /* !defined(SQLITE_OMIT_TRIGGER) */
#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
#ifndef NDEBUG
case PragTyp_PARSER_TRACE: {
if( zRight ){
if( sqlite3GetBoolean(zRight, 0) ){
sqlite3ParserTrace(stderr, "parser: ");
}else{
sqlite3ParserTrace(0, 0);
}
}
}
break;
#endif
/* Reinstall the LIKE and GLOB functions. The variant of LIKE
** used will be case sensitive or not depending on the RHS.
*/
case PragTyp_CASE_SENSITIVE_LIKE: {
if( zRight ){
sqlite3RegisterLikeFunctions(db, sqlite3GetBoolean(zRight, 0));
}
}
break;
#ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX
# define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100
#endif
#ifndef SQLITE_OMIT_INTEGRITY_CHECK
/* Pragma "quick_check" is reduced version of
** integrity_check designed to detect most database corruption
** without most of the overhead of a full integrity-check.
*/
case PragTyp_INTEGRITY_CHECK: {
int i, j, addr, mxErr;
/* 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 int iLn = VDBE_OFFSET_LINENO(2);
static const VdbeOpList endCode[] = {
{ OP_IfNeg, 1, 0, 0}, /* 0 */
{ OP_String8, 0, 3, 0}, /* 1 */
{ OP_ResultRow, 3, 1, 0},
};
int isQuick = (sqlite3Tolower(zLeft[0])=='q');
/* If the PRAGMA command was of the form "PRAGMA <db>.integrity_check",
** then iDb is set to the index of the database identified by <db>.
** In this case, the integrity of database iDb only is verified by
** the VDBE created below.
**
** Otherwise, if the command was simply "PRAGMA integrity_check" (or
** "PRAGMA quick_check"), then iDb is set to 0. In this case, set iDb
** to -1 here, to indicate that the VDBE should verify the integrity
** of all attached databases. */
assert( iDb>=0 );
assert( iDb==0 || pId2->z );
if( pId2->z==0 ) iDb = -1;
/* Initialize the VDBE program */
pParse->nMem = 6;
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", SQLITE_STATIC);
/* Set the maximum error count */
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
if( zRight ){
sqlite3GetInt32(zRight, &mxErr);
if( mxErr<=0 ){
mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
}
}
sqlite3VdbeAddOp2(v, OP_Integer, mxErr, 1); /* reg[1] holds errors left */
/* 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;
if( iDb>=0 && i!=iDb ) continue;
sqlite3CodeVerifySchema(pParse, i);
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Halt if out of errors */
VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeJumpHere(v, addr);
/* Do an integrity check of the B-Tree
**
** Begin by filling registers 2, 3, ... with the root pages numbers
** for all tables and indices in the database.
*/
assert( sqlite3SchemaMutexHeld(db, i, 0) );
pTbls = &db->aDb[i].pSchema->tblHash;
for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
Table *pTab = sqliteHashData(x);
Index *pIdx;
if( HasRowid(pTab) ){
sqlite3VdbeAddOp2(v, OP_Integer, pTab->tnum, 2+cnt);
VdbeComment((v, "%s", pTab->zName));
cnt++;
}
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
sqlite3VdbeAddOp2(v, OP_Integer, pIdx->tnum, 2+cnt);
VdbeComment((v, "%s", pIdx->zName));
cnt++;
}
}
/* Make sure sufficient number of registers have been allocated */
pParse->nMem = MAX( pParse->nMem, cnt+8 );
/* Do the b-tree integrity checks */
sqlite3VdbeAddOp3(v, OP_IntegrityCk, 2, cnt, 1);
sqlite3VdbeChangeP5(v, (u8)i);
addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); VdbeCoverage(v);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName),
P4_DYNAMIC);
sqlite3VdbeAddOp3(v, OP_Move, 2, 4, 1);
sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 2);
sqlite3VdbeAddOp2(v, OP_ResultRow, 2, 1);
sqlite3VdbeJumpHere(v, addr);
/* Make sure all the indices are constructed correctly.
*/
for(x=sqliteHashFirst(pTbls); x && !isQuick; x=sqliteHashNext(x)){
Table *pTab = sqliteHashData(x);
Index *pIdx, *pPk;
Index *pPrior = 0;
int loopTop;
int iDataCur, iIdxCur;
int r1 = -1;
if( pTab->pIndex==0 ) continue;
pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab);
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Stop if out of errors */
VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeJumpHere(v, addr);
sqlite3ExprCacheClear(pParse);
sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead,
1, 0, &iDataCur, &iIdxCur);
sqlite3VdbeAddOp2(v, OP_Integer, 0, 7);
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
sqlite3VdbeAddOp2(v, OP_Integer, 0, 8+j); /* index entries counter */
}
pParse->nMem = MAX(pParse->nMem, 8+j);
sqlite3VdbeAddOp2(v, OP_Rewind, iDataCur, 0); VdbeCoverage(v);
loopTop = sqlite3VdbeAddOp2(v, OP_AddImm, 7, 1);
/* Verify that all NOT NULL columns really are NOT NULL */
for(j=0; j<pTab->nCol; j++){
char *zErr;
int jmp2, jmp3;
if( j==pTab->iPKey ) continue;
if( pTab->aCol[j].notNull==0 ) continue;
sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3);
sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG);
jmp2 = sqlite3VdbeAddOp1(v, OP_NotNull, 3); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */
zErr = sqlite3MPrintf(db, "NULL value in %s.%s", pTab->zName,
pTab->aCol[j].zName);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, zErr, P4_DYNAMIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, 3, 1);
jmp3 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); VdbeCoverage(v);
sqlite3VdbeAddOp0(v, OP_Halt);
sqlite3VdbeJumpHere(v, jmp2);
sqlite3VdbeJumpHere(v, jmp3);
}
/* Validate index entries for the current row */
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
int jmp2, jmp3, jmp4, jmp5;
int ckUniq = sqlite3VdbeMakeLabel(v);
if( pPk==pIdx ) continue;
r1 = sqlite3GenerateIndexKey(pParse, pIdx, iDataCur, 0, 0, &jmp3,
pPrior, r1);
pPrior = pIdx;
sqlite3VdbeAddOp2(v, OP_AddImm, 8+j, 1); /* increment entry count */
/* Verify that an index entry exists for the current table row */
jmp2 = sqlite3VdbeAddOp4Int(v, OP_Found, iIdxCur+j, ckUniq, r1,
pIdx->nColumn); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, "row ", P4_STATIC);
sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3);
sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0,
" missing from index ", P4_STATIC);
sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3);
jmp5 = sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0,
pIdx->zName, P4_TRANSIENT);
sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3);
sqlite3VdbeAddOp2(v, OP_ResultRow, 3, 1);
jmp4 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); VdbeCoverage(v);
sqlite3VdbeAddOp0(v, OP_Halt);
sqlite3VdbeJumpHere(v, jmp2);
/* For UNIQUE indexes, verify that only one entry exists with the
** current key. The entry is unique if (1) any column is NULL
** or (2) the next entry has a different key */
if( IsUniqueIndex(pIdx) ){
int uniqOk = sqlite3VdbeMakeLabel(v);
int jmp6;
int kk;
for(kk=0; kk<pIdx->nKeyCol; kk++){
int iCol = pIdx->aiColumn[kk];
assert( iCol>=0 && iCol<pTab->nCol );
if( pTab->aCol[iCol].notNull ) continue;
sqlite3VdbeAddOp2(v, OP_IsNull, r1+kk, uniqOk);
VdbeCoverage(v);
}
jmp6 = sqlite3VdbeAddOp1(v, OP_Next, iIdxCur+j); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_Goto, 0, uniqOk);
sqlite3VdbeJumpHere(v, jmp6);
sqlite3VdbeAddOp4Int(v, OP_IdxGT, iIdxCur+j, uniqOk, r1,
pIdx->nKeyCol); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0,
"non-unique entry in index ", P4_STATIC);
sqlite3VdbeAddOp2(v, OP_Goto, 0, jmp5);
sqlite3VdbeResolveLabel(v, uniqOk);
}
sqlite3VdbeJumpHere(v, jmp4);
sqlite3ResolvePartIdxLabel(pParse, jmp3);
}
sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); VdbeCoverage(v);
sqlite3VdbeJumpHere(v, loopTop-1);
#ifndef SQLITE_OMIT_BTREECOUNT
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0,
"wrong # of entries in index ", P4_STATIC);
for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
if( pPk==pIdx ) continue;
addr = sqlite3VdbeCurrentAddr(v);
sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr+2); VdbeCoverage(v);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeAddOp2(v, OP_Count, iIdxCur+j, 3);
sqlite3VdbeAddOp3(v, OP_Eq, 8+j, addr+8, 3); VdbeCoverage(v);
sqlite3VdbeChangeP5(v, SQLITE_NOTNULL);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1);
sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pIdx->zName, P4_TRANSIENT);
sqlite3VdbeAddOp3(v, OP_Concat, 3, 2, 7);
sqlite3VdbeAddOp2(v, OP_ResultRow, 7, 1);
}
#endif /* SQLITE_OMIT_BTREECOUNT */
}
}
addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode, iLn);
sqlite3VdbeChangeP3(v, addr, -mxErr);
sqlite3VdbeJumpHere(v, addr);
sqlite3VdbeChangeP4(v, addr+1, "ok", P4_STATIC);
}
break;
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */
#ifndef SQLITE_OMIT_UTF16
/*
** PRAGMA encoding
** PRAGMA encoding = "utf-8"|"utf-16"|"utf-16le"|"utf-16be"
**
** In its 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
*/
case PragTyp_ENCODING: {
static const struct EncName {
char *zName;
u8 enc;
} encnames[] = {
{ "UTF8", SQLITE_UTF8 },
{ "UTF-8", SQLITE_UTF8 }, /* Must be element [1] */
{ "UTF-16le", SQLITE_UTF16LE }, /* Must be element [2] */
{ "UTF-16be", SQLITE_UTF16BE }, /* Must be element [3] */
{ "UTF16le", SQLITE_UTF16LE },
{ "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", SQLITE_STATIC);
sqlite3VdbeAddOp2(v, OP_String8, 0, 1);
assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 );
assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE );
assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE );
sqlite3VdbeChangeP4(v, -1, encnames[ENC(pParse->db)].zName, P4_STATIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}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);
}
}
}
}
break;
#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>
**
** PRAGMA [database.]freelist_count = <integer>
**
** PRAGMA [database.]application_id
** PRAGMA [database.]application_id = <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.
*/
case PragTyp_HEADER_VALUE: {
int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */
sqlite3VdbeUsesBtree(v, iDb);
switch( zLeft[0] ){
case 'a': case 'A':
iCookie = BTREE_APPLICATION_ID;
break;
case 'f': case 'F':
iCookie = BTREE_FREE_PAGE_COUNT;
break;
case 's': case 'S':
iCookie = BTREE_SCHEMA_VERSION;
break;
default:
iCookie = BTREE_USER_VERSION;
break;
}
if( zRight && iCookie!=BTREE_FREE_PAGE_COUNT ){
/* Write the specified cookie value */
static const VdbeOpList setCookie[] = {
{ OP_Transaction, 0, 1, 0}, /* 0 */
{ OP_Integer, 0, 1, 0}, /* 1 */
{ OP_SetCookie, 0, 0, 1}, /* 2 */
};
int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie, 0);
sqlite3VdbeChangeP1(v, addr, iDb);
sqlite3VdbeChangeP1(v, addr+1, sqlite3Atoi(zRight));
sqlite3VdbeChangeP1(v, addr+2, iDb);
sqlite3VdbeChangeP2(v, addr+2, iCookie);
}else{
/* Read the specified cookie value */
static const VdbeOpList readCookie[] = {
{ OP_Transaction, 0, 0, 0}, /* 0 */
{ OP_ReadCookie, 0, 1, 0}, /* 1 */
{ OP_ResultRow, 1, 1, 0}
};
int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie, 0);
sqlite3VdbeChangeP1(v, addr, iDb);
sqlite3VdbeChangeP1(v, addr+1, iDb);
sqlite3VdbeChangeP3(v, addr+1, iCookie);
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT);
}
}
break;
#endif /* SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS */
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
/*
** PRAGMA compile_options
**
** Return the names of all compile-time options used in this build,
** one option per row.
*/
case PragTyp_COMPILE_OPTIONS: {
int i = 0;
const char *zOpt;
sqlite3VdbeSetNumCols(v, 1);
pParse->nMem = 1;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "compile_option", SQLITE_STATIC);
while( (zOpt = sqlite3_compileoption_get(i++))!=0 ){
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zOpt, 0);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}
}
break;
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
#ifndef SQLITE_OMIT_WAL
/*
** PRAGMA [database.]wal_checkpoint = passive|full|restart
**
** Checkpoint the database.
*/
case PragTyp_WAL_CHECKPOINT: {
int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED);
int eMode = SQLITE_CHECKPOINT_PASSIVE;
if( zRight ){
if( sqlite3StrICmp(zRight, "full")==0 ){
eMode = SQLITE_CHECKPOINT_FULL;
}else if( sqlite3StrICmp(zRight, "restart")==0 ){
eMode = SQLITE_CHECKPOINT_RESTART;
}
}
sqlite3VdbeSetNumCols(v, 3);
pParse->nMem = 3;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC);
sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
}
break;
/*
** PRAGMA wal_autocheckpoint
** PRAGMA wal_autocheckpoint = N
**
** Configure a database connection to automatically checkpoint a database
** after accumulating N frames in the log. Or query for the current value
** of N.
*/
case PragTyp_WAL_AUTOCHECKPOINT: {
if( zRight ){
sqlite3_wal_autocheckpoint(db, sqlite3Atoi(zRight));
}
returnSingleInt(pParse, "wal_autocheckpoint",
db->xWalCallback==sqlite3WalDefaultHook ?
SQLITE_PTR_TO_INT(db->pWalArg) : 0);
}
break;
#endif
/*
** PRAGMA shrink_memory
**
** This pragma attempts to free as much memory as possible from the
** current database connection.
*/
case PragTyp_SHRINK_MEMORY: {
sqlite3_db_release_memory(db);
break;
}
/*
** PRAGMA busy_timeout
** PRAGMA busy_timeout = N
**
** Call sqlite3_busy_timeout(db, N). Return the current timeout value
** if one is set. If no busy handler or a different busy handler is set
** then 0 is returned. Setting the busy_timeout to 0 or negative
** disables the timeout.
*/
/*case PragTyp_BUSY_TIMEOUT*/ default: {
assert( aPragmaNames[mid].ePragTyp==PragTyp_BUSY_TIMEOUT );
if( zRight ){
sqlite3_busy_timeout(db, sqlite3Atoi(zRight));
}
returnSingleInt(pParse, "timeout", db->busyTimeout);
break;
}
/*
** PRAGMA soft_heap_limit
** PRAGMA soft_heap_limit = N
**
** Call sqlite3_soft_heap_limit64(N). Return the result. If N is omitted,
** use -1.
*/
case PragTyp_SOFT_HEAP_LIMIT: {
sqlite3_int64 N;
if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){
sqlite3_soft_heap_limit64(N);
}
returnSingleInt(pParse, "soft_heap_limit", sqlite3_soft_heap_limit64(-1));
break;
}
#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
/*
** Report the current state of file logs for all databases
*/
case PragTyp_LOCK_STATUS: {
static const char *const azLockName[] = {
"unlocked", "shared", "reserved", "pending", "exclusive"
};
int i;
sqlite3VdbeSetNumCols(v, 2);
pParse->nMem = 2;
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", SQLITE_STATIC);
sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", SQLITE_STATIC);
for(i=0; i<db->nDb; i++){
Btree *pBt;
const char *zState = "unknown";
int j;
if( db->aDb[i].zName==0 ) continue;
sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, db->aDb[i].zName, P4_STATIC);
pBt = db->aDb[i].pBt;
if( pBt==0 || sqlite3BtreePager(pBt)==0 ){
zState = "closed";
}else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0,
SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){
zState = azLockName[j];
}
sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, zState, P4_STATIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2);
}
break;
}
#endif
#ifdef SQLITE_HAS_CODEC
case PragTyp_KEY: {
if( zRight ) sqlite3_key_v2(db, zDb, zRight, sqlite3Strlen30(zRight));
break;
}
case PragTyp_REKEY: {
if( zRight ) sqlite3_rekey_v2(db, zDb, zRight, sqlite3Strlen30(zRight));
break;
}
case PragTyp_HEXKEY: {
if( zRight ){
u8 iByte;
int i;
char zKey[40];
for(i=0, iByte=0; i<sizeof(zKey)*2 && sqlite3Isxdigit(zRight[i]); i++){
iByte = (iByte<<4) + sqlite3HexToInt(zRight[i]);
if( (i&1)!=0 ) zKey[i/2] = iByte;
}
if( (zLeft[3] & 0xf)==0xb ){
sqlite3_key_v2(db, zDb, zKey, i/2);
}else{
sqlite3_rekey_v2(db, zDb, zKey, i/2);
}
}
break;
}
#endif
#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
case PragTyp_ACTIVATE_EXTENSIONS: if( zRight ){
#ifdef SQLITE_HAS_CODEC
if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){
sqlite3_activate_see(&zRight[4]);
}
#endif
#ifdef SQLITE_ENABLE_CEROD
if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){
sqlite3_activate_cerod(&zRight[6]);
}
#endif
}
break;
#endif
} /* End of the PRAGMA switch */
pragma_out:
sqlite3DbFree(db, zLeft);
sqlite3DbFree(db, zRight);
}
#endif /* SQLITE_OMIT_PRAGMA */