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Unified Diff: third_party/sqlite/sqlite-src-3100200/src/pragma.c

Issue 2846743003: [sql] Remove SQLite 3.10.2 reference directory. (Closed)
Patch Set: Created 3 years, 8 months ago
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Index: third_party/sqlite/sqlite-src-3100200/src/pragma.c
diff --git a/third_party/sqlite/sqlite-src-3100200/src/pragma.c b/third_party/sqlite/sqlite-src-3100200/src/pragma.c
deleted file mode 100644
index 0d48057d210818c29d6558c617e10dc93c844b8d..0000000000000000000000000000000000000000
--- a/third_party/sqlite/sqlite-src-3100200/src/pragma.c
+++ /dev/null
@@ -1,1966 +0,0 @@
-/*
-** 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 "pragma.h" include file is an automatically generated file that
-** that includes the PragType_XXXX macro definitions and the aPragmaName[]
-** object. This ensures that the aPragmaName[] table is arranged in
-** lexicographical order to facility a binary search of the pragma name.
-** Do not edit pragma.h directly. Edit and rerun the script in at
-** ../tool/mkpragmatab.tcl. */
-#include "pragma.h"
-
-/*
-** 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 */
-
-/*
-** Set the names of the first N columns to the values in azCol[]
-*/
-static void setAllColumnNames(
- Vdbe *v, /* The query under construction */
- int N, /* Number of columns */
- const char **azCol /* Names of columns */
-){
- int i;
- sqlite3VdbeSetNumCols(v, N);
- for(i=0; i<N; i++){
- sqlite3VdbeSetColName(v, i, COLNAME_NAME, azCol[i], SQLITE_STATIC);
- }
-}
-static void setOneColumnName(Vdbe *v, const char *z){
- setAllColumnNames(v, 1, &z);
-}
-
-/*
-** Generate code to return a single integer value.
-*/
-static void returnSingleInt(Vdbe *v, const char *zLabel, i64 value){
- sqlite3VdbeAddOp4Dup8(v, OP_Int64, 0, 1, 0, (const u8*)&value, P4_INT64);
- setOneColumnName(v, zLabel);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
-}
-
-/*
-** Generate code to return a single text value.
-*/
-static void returnSingleText(
- Vdbe *v, /* Prepared statement under construction */
- const char *zLabel, /* Name of the result column */
- const char *zValue /* Value to be returned */
-){
- if( zValue ){
- sqlite3VdbeLoadString(v, 1, (const char*)zValue);
- setOneColumnName(v, zLabel);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 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 [schema.]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 [schema.]id field */
- Token *pId2, /* Second part of [schema.]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 = 0; /* 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 */
- const struct sPragmaNames *pPragma;
-
- if( v==0 ) return;
- sqlite3VdbeRunOnlyOnce(v);
- pParse->nMem = 2;
-
- /* Interpret the [schema.] 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.
- **
- ** IMPLEMENTATION-OF: R-12238-55120 Whenever a PRAGMA statement is parsed,
- ** an SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file
- ** object corresponding to the database file to which the pragma
- ** statement refers.
- **
- ** IMPLEMENTATION-OF: R-29875-31678 The argument to the SQLITE_FCNTL_PRAGMA
- ** file control is an array of pointers to strings (char**) in which the
- ** second element of the array is the name of the pragma and the third
- ** element is the argument to the pragma or NULL if the pragma has no
- ** argument.
- */
- 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 ){
- returnSingleText(v, "result", aFcntl[0]);
- 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;
- pPragma = &aPragmaNames[mid];
-
- /* Make sure the database schema is loaded if the pragma requires that */
- if( (pPragma->mPragFlag & PragFlag_NeedSchema)!=0 ){
- if( sqlite3ReadSchema(pParse) ) goto pragma_out;
- }
-
- /* Jump to the appropriate pragma handler */
- switch( pPragma->ePragTyp ){
-
-#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
- /*
- ** PRAGMA [schema.]default_cache_size
- ** PRAGMA [schema.]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 ){
- setOneColumnName(v, "cache_size");
- 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 [schema.]page_size
- ** PRAGMA [schema.]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(v, "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 [schema.]secure_delete
- ** PRAGMA [schema.]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(v, "secure_delete", b);
- break;
- }
-
- /*
- ** PRAGMA [schema.]max_page_count
- ** PRAGMA [schema.]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 [schema.]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 [schema.]locking_mode
- ** PRAGMA [schema.]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";
- }
- returnSingleText(v, "locking_mode", zRet);
- break;
- }
-
- /*
- ** PRAGMA [schema.]journal_mode
- ** PRAGMA [schema.]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 */
-
- setOneColumnName(v, "journal_mode");
- 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 [schema.]journal_size_limit
- ** PRAGMA [schema.]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(v, "journal_size_limit", iLimit);
- break;
- }
-
-#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
-
- /*
- ** PRAGMA [schema.]auto_vacuum
- ** PRAGMA [schema.]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(v, "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 [schema.]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 [schema.]cache_size
- ** PRAGMA [schema.]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(v, "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 [schema.]cache_spill
- ** PRAGMA cache_spill=BOOLEAN
- ** PRAGMA [schema.]cache_spill=N
- **
- ** The first form reports the current local setting for the
- ** page cache spill size. The second form turns cache spill on
- ** or off. When turnning cache spill on, the size is set to the
- ** current cache_size. The third form sets a spill size that
- ** may be different form the cache size.
- ** 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.
- **
- ** If the number of cache_spill pages is less then the number of
- ** cache_size pages, no spilling occurs until the page count exceeds
- ** the number of cache_size pages.
- **
- ** The cache_spill=BOOLEAN setting applies to all attached schemas,
- ** not just the schema specified.
- */
- case PragTyp_CACHE_SPILL: {
- assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
- if( !zRight ){
- returnSingleInt(v, "cache_spill",
- (db->flags & SQLITE_CacheSpill)==0 ? 0 :
- sqlite3BtreeSetSpillSize(pDb->pBt,0));
- }else{
- int size = 1;
- if( sqlite3GetInt32(zRight, &size) ){
- sqlite3BtreeSetSpillSize(pDb->pBt, size);
- }
- if( sqlite3GetBoolean(zRight, size!=0) ){
- db->flags |= SQLITE_CacheSpill;
- }else{
- db->flags &= ~SQLITE_CacheSpill;
- }
- setAllPagerFlags(db);
- }
- break;
- }
-
- /*
- ** PRAGMA [schema.]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(v, "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(v, "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 ){
- returnSingleText(v, "temp_store_directory", sqlite3_temp_directory);
- }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 ){
- returnSingleText(v, "data_store_directory", sqlite3_data_directory);
- }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 [schema.]lock_proxy_file
- ** PRAGMA [schema.]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);
- returnSingleText(v, "lock_proxy_file", proxy_file_path);
- }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 [schema.]synchronous
- ** PRAGMA [schema.]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(v, "synchronous", pDb->safety_level-1);
- }else{
- if( !db->autoCommit ){
- sqlite3ErrorMsg(pParse,
- "Safety level may not be changed inside a transaction");
- }else{
- int iLevel = (getSafetyLevel(zRight,0,1)+1) & PAGER_SYNCHRONOUS_MASK;
- if( iLevel==0 ) iLevel = 1;
- pDb->safety_level = iLevel;
- setAllPagerFlags(db);
- }
- }
- break;
- }
-#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
-
-#ifndef SQLITE_OMIT_FLAG_PRAGMAS
- case PragTyp_FLAG: {
- if( zRight==0 ){
- returnSingleInt(v, pPragma->zName, (db->flags & pPragma->iArg)!=0 );
- }else{
- int mask = pPragma->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 SQLITE_USER_AUTHENTICATION
- if( db->auth.authLevel==UAUTH_User ){
- /* Do not allow non-admin users to modify the schema arbitrarily */
- mask &= ~(SQLITE_WriteSchema);
- }
-#endif
-
- 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 ){
- static const char *azCol[] = {
- "cid", "name", "type", "notnull", "dflt_value", "pk"
- };
- int i, k;
- int nHidden = 0;
- Column *pCol;
- Index *pPk = sqlite3PrimaryKeyIndex(pTab);
- pParse->nMem = 6;
- sqlite3CodeVerifySchema(pParse, iDb);
- setAllColumnNames(v, 6, azCol); assert( 6==ArraySize(azCol) );
- sqlite3ViewGetColumnNames(pParse, pTab);
- for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
- if( IsHiddenColumn(pCol) ){
- nHidden++;
- continue;
- }
- if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){
- k = 0;
- }else if( pPk==0 ){
- k = 1;
- }else{
- for(k=1; k<=pTab->nCol && pPk->aiColumn[k-1]!=i; k++){}
- }
- sqlite3VdbeMultiLoad(v, 1, "issisi",
- i-nHidden,
- pCol->zName,
- pCol->zType ? pCol->zType : "",
- pCol->notNull ? 1 : 0,
- pCol->zDflt,
- k);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6);
- }
- }
- }
- break;
-
- case PragTyp_STATS: {
- static const char *azCol[] = { "table", "index", "width", "height" };
- Index *pIdx;
- HashElem *i;
- v = sqlite3GetVdbe(pParse);
- pParse->nMem = 4;
- sqlite3CodeVerifySchema(pParse, iDb);
- setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) );
- for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){
- Table *pTab = sqliteHashData(i);
- sqlite3VdbeMultiLoad(v, 1, "ssii",
- pTab->zName,
- 0,
- (int)sqlite3LogEstToInt(pTab->szTabRow),
- (int)sqlite3LogEstToInt(pTab->nRowLogEst));
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4);
- for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
- sqlite3VdbeMultiLoad(v, 2, "sii",
- pIdx->zName,
- (int)sqlite3LogEstToInt(pIdx->szIdxRow),
- (int)sqlite3LogEstToInt(pIdx->aiRowLogEst[0]));
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4);
- }
- }
- }
- break;
-
- case PragTyp_INDEX_INFO: if( zRight ){
- Index *pIdx;
- Table *pTab;
- pIdx = sqlite3FindIndex(db, zRight, zDb);
- if( pIdx ){
- static const char *azCol[] = {
- "seqno", "cid", "name", "desc", "coll", "key"
- };
- int i;
- int mx;
- if( pPragma->iArg ){
- /* PRAGMA index_xinfo (newer version with more rows and columns) */
- mx = pIdx->nColumn;
- pParse->nMem = 6;
- }else{
- /* PRAGMA index_info (legacy version) */
- mx = pIdx->nKeyCol;
- pParse->nMem = 3;
- }
- pTab = pIdx->pTable;
- sqlite3CodeVerifySchema(pParse, iDb);
- assert( pParse->nMem<=ArraySize(azCol) );
- setAllColumnNames(v, pParse->nMem, azCol);
- for(i=0; i<mx; i++){
- i16 cnum = pIdx->aiColumn[i];
- sqlite3VdbeMultiLoad(v, 1, "iis", i, cnum,
- cnum<0 ? 0 : pTab->aCol[cnum].zName);
- if( pPragma->iArg ){
- sqlite3VdbeMultiLoad(v, 4, "isi",
- pIdx->aSortOrder[i],
- pIdx->azColl[i],
- i<pIdx->nKeyCol);
- }
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, pParse->nMem);
- }
- }
- }
- break;
-
- case PragTyp_INDEX_LIST: if( zRight ){
- Index *pIdx;
- Table *pTab;
- int i;
- pTab = sqlite3FindTable(db, zRight, zDb);
- if( pTab ){
- static const char *azCol[] = {
- "seq", "name", "unique", "origin", "partial"
- };
- v = sqlite3GetVdbe(pParse);
- pParse->nMem = 5;
- sqlite3CodeVerifySchema(pParse, iDb);
- setAllColumnNames(v, 5, azCol); assert( 5==ArraySize(azCol) );
- for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){
- const char *azOrigin[] = { "c", "u", "pk" };
- sqlite3VdbeMultiLoad(v, 1, "isisi",
- i,
- pIdx->zName,
- IsUniqueIndex(pIdx),
- azOrigin[pIdx->idxType],
- pIdx->pPartIdxWhere!=0);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 5);
- }
- }
- }
- break;
-
- case PragTyp_DATABASE_LIST: {
- static const char *azCol[] = { "seq", "name", "file" };
- int i;
- pParse->nMem = 3;
- setAllColumnNames(v, 3, azCol); assert( 3==ArraySize(azCol) );
- for(i=0; i<db->nDb; i++){
- if( db->aDb[i].pBt==0 ) continue;
- assert( db->aDb[i].zName!=0 );
- sqlite3VdbeMultiLoad(v, 1, "iss",
- i,
- db->aDb[i].zName,
- sqlite3BtreeGetFilename(db->aDb[i].pBt));
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3);
- }
- }
- break;
-
- case PragTyp_COLLATION_LIST: {
- static const char *azCol[] = { "seq", "name" };
- int i = 0;
- HashElem *p;
- pParse->nMem = 2;
- setAllColumnNames(v, 2, azCol); assert( 2==ArraySize(azCol) );
- for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){
- CollSeq *pColl = (CollSeq *)sqliteHashData(p);
- sqlite3VdbeMultiLoad(v, 1, "is", i++, pColl->zName);
- 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 ){
- static const char *azCol[] = {
- "id", "seq", "table", "from", "to", "on_update", "on_delete",
- "match"
- };
- int i = 0;
- pParse->nMem = 8;
- sqlite3CodeVerifySchema(pParse, iDb);
- setAllColumnNames(v, 8, azCol); assert( 8==ArraySize(azCol) );
- while(pFK){
- int j;
- for(j=0; j<pFK->nCol; j++){
- sqlite3VdbeMultiLoad(v, 1, "iissssss",
- i,
- j,
- pFK->zTo,
- pTab->aCol[pFK->aCol[j].iFrom].zName,
- pFK->aCol[j].zCol,
- actionName(pFK->aAction[1]), /* ON UPDATE */
- actionName(pFK->aAction[0]), /* ON DELETE */
- "NONE");
- 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 */
- static const char *azCol[] = { "table", "rowid", "parent", "fkid" };
-
- regResult = pParse->nMem+1;
- pParse->nMem += 4;
- regKey = ++pParse->nMem;
- regRow = ++pParse->nMem;
- v = sqlite3GetVdbe(pParse);
- setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) );
- 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);
- sqlite3VdbeLoadString(v, regResult, pTab->zName);
- 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);
- sqlite3VdbeGoto(v, 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(db,pIdx), pFK->nCol);
- sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0);
- VdbeCoverage(v);
- }
- }
- sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1);
- sqlite3VdbeMultiLoad(v, regResult+2, "si", pFK->zTo, i-1);
- 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(stdout, "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_AddImm, 1, 0, 0}, /* 0 */
- { OP_If, 1, 0, 0}, /* 1 */
- { OP_String8, 0, 3, 0}, /* 2 */
- { 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;
- setOneColumnName(v, "integrity_check");
-
- /* 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, 0,
- 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 */
- sqlite3VdbeLoadString(v, 3, "row ");
- sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3);
- sqlite3VdbeLoadString(v, 4, " missing from index ");
- sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3);
- jmp5 = sqlite3VdbeLoadString(v, 4, pIdx->zName);
- 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!=XN_ROWID && iCol<pTab->nCol );
- if( iCol>=0 && pTab->aCol[iCol].notNull ) continue;
- sqlite3VdbeAddOp2(v, OP_IsNull, r1+kk, uniqOk);
- VdbeCoverage(v);
- }
- jmp6 = sqlite3VdbeAddOp1(v, OP_Next, iIdxCur+j); VdbeCoverage(v);
- sqlite3VdbeGoto(v, 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 */
- sqlite3VdbeLoadString(v, 3, "non-unique entry in index ");
- sqlite3VdbeGoto(v, 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
- sqlite3VdbeLoadString(v, 2, "wrong # of entries in index ");
- 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);
- sqlite3VdbeLoadString(v, 3, pIdx->zName);
- sqlite3VdbeAddOp3(v, OP_Concat, 3, 2, 7);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 7, 1);
- }
-#endif /* SQLITE_OMIT_BTREECOUNT */
- }
- }
- addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode, iLn);
- sqlite3VdbeChangeP2(v, addr, -mxErr);
- sqlite3VdbeJumpHere(v, addr+1);
- sqlite3VdbeChangeP4(v, addr+2, "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;
- assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 );
- assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE );
- assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE );
- returnSingleText(v, "encoding", encnames[ENC(pParse->db)].zName);
- }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) ){
- SCHEMA_ENC(db) = ENC(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 [schema.]schema_version
- ** PRAGMA [schema.]schema_version = <integer>
- **
- ** PRAGMA [schema.]user_version
- ** PRAGMA [schema.]user_version = <integer>
- **
- ** PRAGMA [schema.]freelist_count = <integer>
- **
- ** PRAGMA [schema.]application_id
- ** PRAGMA [schema.]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 = pPragma->iArg; /* Which cookie to read or write */
- sqlite3VdbeUsesBtree(v, iDb);
- if( zRight && (pPragma->mPragFlag & PragFlag_ReadOnly)==0 ){
- /* 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;
- pParse->nMem = 1;
- setOneColumnName(v, "compile_option");
- while( (zOpt = sqlite3_compileoption_get(i++))!=0 ){
- sqlite3VdbeLoadString(v, 1, zOpt);
- sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
- }
- }
- break;
-#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
-
-#ifndef SQLITE_OMIT_WAL
- /*
- ** PRAGMA [schema.]wal_checkpoint = passive|full|restart|truncate
- **
- ** Checkpoint the database.
- */
- case PragTyp_WAL_CHECKPOINT: {
- static const char *azCol[] = { "busy", "log", "checkpointed" };
- 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;
- }else if( sqlite3StrICmp(zRight, "truncate")==0 ){
- eMode = SQLITE_CHECKPOINT_TRUNCATE;
- }
- }
- setAllColumnNames(v, 3, azCol); assert( 3==ArraySize(azCol) );
- pParse->nMem = 3;
- 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(v, "wal_autocheckpoint",
- db->xWalCallback==sqlite3WalDefaultHook ?
- SQLITE_PTR_TO_INT(db->pWalArg) : 0);
- }
- break;
-#endif
-
- /*
- ** PRAGMA shrink_memory
- **
- ** IMPLEMENTATION-OF: R-23445-46109 This pragma causes the database
- ** connection on which it is invoked to free up as much memory as it
- ** can, by calling sqlite3_db_release_memory().
- */
- 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( pPragma->ePragTyp==PragTyp_BUSY_TIMEOUT );
- if( zRight ){
- sqlite3_busy_timeout(db, sqlite3Atoi(zRight));
- }
- returnSingleInt(v, "timeout", db->busyTimeout);
- break;
- }
-
- /*
- ** PRAGMA soft_heap_limit
- ** PRAGMA soft_heap_limit = N
- **
- ** IMPLEMENTATION-OF: R-26343-45930 This pragma invokes the
- ** sqlite3_soft_heap_limit64() interface with the argument N, if N is
- ** specified and is a non-negative integer.
- ** IMPLEMENTATION-OF: R-64451-07163 The soft_heap_limit pragma always
- ** returns the same integer that would be returned by the
- ** sqlite3_soft_heap_limit64(-1) C-language function.
- */
- case PragTyp_SOFT_HEAP_LIMIT: {
- sqlite3_int64 N;
- if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){
- sqlite3_soft_heap_limit64(N);
- }
- returnSingleInt(v, "soft_heap_limit", sqlite3_soft_heap_limit64(-1));
- break;
- }
-
- /*
- ** PRAGMA threads
- ** PRAGMA threads = N
- **
- ** Configure the maximum number of worker threads. Return the new
- ** maximum, which might be less than requested.
- */
- case PragTyp_THREADS: {
- sqlite3_int64 N;
- if( zRight
- && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK
- && N>=0
- ){
- sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, (int)(N&0x7fffffff));
- }
- returnSingleInt(v, "threads",
- sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, -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"
- };
- static const char *azCol[] = { "database", "status" };
- int i;
- setAllColumnNames(v, 2, azCol); assert( 2==ArraySize(azCol) );
- pParse->nMem = 2;
- for(i=0; i<db->nDb; i++){
- Btree *pBt;
- const char *zState = "unknown";
- int j;
- if( db->aDb[i].zName==0 ) continue;
- 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];
- }
- sqlite3VdbeMultiLoad(v, 1, "ss", db->aDb[i].zName, zState);
- 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 */
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