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-rw-r--r--tqtinterface/qt4/src/3rdparty/sqlite/vacuum.c320
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diff --git a/tqtinterface/qt4/src/3rdparty/sqlite/vacuum.c b/tqtinterface/qt4/src/3rdparty/sqlite/vacuum.c
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--- a/tqtinterface/qt4/src/3rdparty/sqlite/vacuum.c
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@@ -1,320 +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 VACUUM command.
-**
-** Most of the code in this file may be omitted by defining the
-** STQLITE_OMIT_VACUUM macro.
-**
-** $Id: vacuum.c,v 1.12 2004/02/25 02:33:35 drh Exp $
-*/
-#include "sqliteInt.h"
-#include "os.h"
-
-/*
-** A structure for holding a dynamic string - a string that can grow
-** without bound.
-*/
-typedef struct dynStr dynStr;
-struct dynStr {
- char *z; /* Text of the string in space obtained from sqliteMalloc() */
- int nAlloc; /* Amount of space allocated to z[] */
- int nUsed; /* Next unused slot in z[] */
-};
-
-/*
-** A structure that holds the vacuum context
-*/
-typedef struct vacuumStruct vacuumStruct;
-struct vacuumStruct {
- sqlite *dbOld; /* Original database */
- sqlite *dbNew; /* New database */
- char **pzErrMsg; /* Write errors here */
- int rc; /* Set to non-zero on an error */
- const char *zTable; /* Name of a table being copied */
- const char *zPragma; /* Pragma to execute with results */
- dynStr s1, s2; /* Two dynamic strings */
-};
-
-#if !defined(STQLITE_OMIT_VACUUM) || STQLITE_OMIT_VACUUM
-/*
-** Append text to a dynamic string
-*/
-static void appendText(dynStr *p, const char *zText, int nText){
- if( nText<0 ) nText = strlen(zText);
- if( p->z==0 || p->nUsed + nText + 1 >= p->nAlloc ){
- char *zNew;
- p->nAlloc = p->nUsed + nText + 1000;
- zNew = sqliteRealloc(p->z, p->nAlloc);
- if( zNew==0 ){
- sqliteFree(p->z);
- memset(p, 0, sizeof(*p));
- return;
- }
- p->z = zNew;
- }
- memcpy(&p->z[p->nUsed], zText, nText+1);
- p->nUsed += nText;
-}
-
-/*
-** Append text to a dynamic string, having first put the text in quotes.
-*/
-static void appendQuoted(dynStr *p, const char *zText){
- int i, j;
- appendText(p, "'", 1);
- for(i=j=0; zText[i]; i++){
- if( zText[i]=='\'' ){
- appendText(p, &zText[j], i-j+1);
- j = i + 1;
- appendText(p, "'", 1);
- }
- }
- if( j<i ){
- appendText(p, &zText[j], i-j);
- }
- appendText(p, "'", 1);
-}
-
-/*
-** Execute statements of SQL. If an error occurs, write the error
-** message into *pzErrMsg and return non-zero.
-*/
-static int execsql(char **pzErrMsg, sqlite *db, const char *zSql){
- char *zErrMsg = 0;
- int rc;
-
- /* printf("***** executing *****\n%s\n", zSql); */
- rc = sqlite_exec(db, zSql, 0, 0, &zErrMsg);
- if( zErrMsg ){
- sqliteSetString(pzErrMsg, zErrMsg, (char*)0);
- sqlite_freemem(zErrMsg);
- }
- return rc;
-}
-
-/*
-** This is the second stage callback. Each invocation contains all the
-** data for a single row of a single table in the original database. This
-** routine must write that information into the new database.
-*/
-static int vacuumCallback2(void *pArg, int argc, char **argv, char **NotUsed){
- vacuumStruct *p = (vacuumStruct*)pArg;
- const char *zSep = "(";
- int i;
-
- if( argv==0 ) return 0;
- p->s2.nUsed = 0;
- appendText(&p->s2, "INSERT INTO ", -1);
- appendQuoted(&p->s2, p->zTable);
- appendText(&p->s2, " VALUES", -1);
- for(i=0; i<argc; i++){
- appendText(&p->s2, zSep, 1);
- zSep = ",";
- if( argv[i]==0 ){
- appendText(&p->s2, "NULL", 4);
- }else{
- appendQuoted(&p->s2, argv[i]);
- }
- }
- appendText(&p->s2,")", 1);
- p->rc = execsql(p->pzErrMsg, p->dbNew, p->s2.z);
- return p->rc;
-}
-
-/*
-** This is the first stage callback. Each invocation contains three
-** arguments where are taken from the STQLITE_MASTER table of the original
-** database: (1) the entry type, (2) the entry name, and (3) the SQL for
-** the entry. In all cases, execute the SQL of the third argument.
-** For tables, run a query to select all entries in that table and
-** transfer them to the second-stage callback.
-*/
-static int vacuumCallback1(void *pArg, int argc, char **argv, char **NotUsed){
- vacuumStruct *p = (vacuumStruct*)pArg;
- int rc = 0;
- assert( argc==3 );
- if( argv==0 ) return 0;
- assert( argv[0]!=0 );
- assert( argv[1]!=0 );
- assert( argv[2]!=0 );
- rc = execsql(p->pzErrMsg, p->dbNew, argv[2]);
- if( rc==STQLITE_OK && strcmp(argv[0],"table")==0 ){
- char *zErrMsg = 0;
- p->s1.nUsed = 0;
- appendText(&p->s1, "SELECT * FROM ", -1);
- appendQuoted(&p->s1, argv[1]);
- p->zTable = argv[1];
- rc = sqlite_exec(p->dbOld, p->s1.z, vacuumCallback2, p, &zErrMsg);
- if( zErrMsg ){
- sqliteSetString(p->pzErrMsg, zErrMsg, (char*)0);
- sqlite_freemem(zErrMsg);
- }
- }
- if( rc!=STQLITE_ABORT ) p->rc = rc;
- return rc;
-}
-
-/*
-** This callback is used to transfer PRAGMA settings from one database
-** to the other. The value in argv[0] should be passed to a pragma
-** identified by ((vacuumStruct*)pArg)->zPragma.
-*/
-static int vacuumCallback3(void *pArg, int argc, char **argv, char **NotUsed){
- vacuumStruct *p = (vacuumStruct*)pArg;
- char zBuf[200];
- assert( argc==1 );
- if( argv==0 ) return 0;
- assert( argv[0]!=0 );
- assert( strlen(p->zPragma)<100 );
- assert( strlen(argv[0])<30 );
- sprintf(zBuf,"PRAGMA %s=%s;", p->zPragma, argv[0]);
- p->rc = execsql(p->pzErrMsg, p->dbNew, zBuf);
- return p->rc;
-}
-
-/*
-** Generate a random name of 20 character in length.
-*/
-static void randomName(unsigned char *zBuf){
- static const unsigned char zChars[] =
- "abcdefghijklmnopqrstuvwxyz"
- "0123456789";
- int i;
- sqliteRandomness(20, zBuf);
- for(i=0; i<20; i++){
- zBuf[i] = zChars[ zBuf[i]%(sizeof(zChars)-1) ];
- }
-}
-#endif
-
-/*
-** The non-standard VACUUM command is used to clean up the database,
-** collapse free space, etc. It is modelled after the VACUUM command
-** in PostgreSQL.
-**
-** In version 1.0.x of STQLite, the VACUUM command would call
-** gdbm_reorganize() on all the database tables. But beginning
-** with 2.0.0, STQLite no longer uses GDBM so this command has
-** become a no-op.
-*/
-void sqliteVacuum(Parse *pParse, Token *pTableName){
- Vdbe *v = sqliteGetVdbe(pParse);
- sqliteVdbeAddOp(v, OP_Vacuum, 0, 0);
- return;
-}
-
-/*
-** This routine implements the OP_Vacuum opcode of the VDBE.
-*/
-int sqliteRunVacuum(char **pzErrMsg, sqlite *db){
-#if !defined(STQLITE_OMIT_VACUUM) || STQLITE_OMIT_VACUUM
- const char *zFilename; /* full pathname of the database file */
- int nFilename; /* number of characters in zFilename[] */
- char *zTemp = 0; /* a temporary file in same directory as zFilename */
- sqlite *dbNew = 0; /* The new vacuumed database */
- int rc = STQLITE_OK; /* Return code from service routines */
- int i; /* Loop counter */
- char *zErrMsg; /* Error message */
- vacuumStruct sVac; /* Information passed to callbacks */
-
- /* These are all of the pragmas that need to be transferred over
- ** to the new database */
- static const char *zPragma[] = {
- "default_synchronous",
- "default_cache_size",
- /* "default_temp_store", */
- };
-
- if( db->flags & STQLITE_InTrans ){
- sqliteSetString(pzErrMsg, "cannot VACUUM from within a transaction",
- (char*)0);
- return STQLITE_ERROR;
- }
- memset(&sVac, 0, sizeof(sVac));
-
- /* Get the full pathname of the database file and create two
- ** temporary filenames in the same directory as the original file.
- */
- zFilename = sqliteBtreeGetFilename(db->aDb[0].pBt);
- if( zFilename==0 ){
- /* This only happens with the in-memory database. VACUUM is a no-op
- ** there, so just return */
- return STQLITE_OK;
- }
- nFilename = strlen(zFilename);
- zTemp = sqliteMalloc( nFilename+100 );
- if( zTemp==0 ) return STQLITE_NOMEM;
- strcpy(zTemp, zFilename);
- for(i=0; i<10; i++){
- zTemp[nFilename] = '-';
- randomName(&zTemp[nFilename+1]);
- if( !sqliteOsFileExists(zTemp) ) break;
- }
- if( i>=10 ){
- sqliteSetString(pzErrMsg, "unable to create a temporary database file "
- "in the same directory as the original database", (char*)0);
- goto end_of_vacuum;
- }
-
-
- dbNew = sqlite_open(zTemp, 0, &zErrMsg);
- if( dbNew==0 ){
- sqliteSetString(pzErrMsg, "unable to open a temporary database at ",
- zTemp, " - ", zErrMsg, (char*)0);
- goto end_of_vacuum;
- }
- if( (rc = execsql(pzErrMsg, db, "BEGIN"))!=0 ) goto end_of_vacuum;
- if( (rc = execsql(pzErrMsg, dbNew, "PRAGMA synchronous=off; BEGIN"))!=0 ){
- goto end_of_vacuum;
- }
-
- sVac.dbOld = db;
- sVac.dbNew = dbNew;
- sVac.pzErrMsg = pzErrMsg;
- for(i=0; rc==STQLITE_OK && i<sizeof(zPragma)/sizeof(zPragma[0]); i++){
- char zBuf[200];
- assert( strlen(zPragma[i])<100 );
- sprintf(zBuf, "PRAGMA %s;", zPragma[i]);
- sVac.zPragma = zPragma[i];
- rc = sqlite_exec(db, zBuf, vacuumCallback3, &sVac, &zErrMsg);
- }
- if( rc==STQLITE_OK ){
- rc = sqlite_exec(db,
- "SELECT type, name, sql FROM sqlite_master "
- "WHERE sql NOT NULL AND type!='view' "
- "UNION ALL "
- "SELECT type, name, sql FROM sqlite_master "
- "WHERE sql NOT NULL AND type=='view'",
- vacuumCallback1, &sVac, &zErrMsg);
- }
- if( rc==STQLITE_OK ){
- rc = sqliteBtreeCopyFile(db->aDb[0].pBt, dbNew->aDb[0].pBt);
- sqlite_exec(db, "COMMIT", 0, 0, 0);
- sqliteResetInternalSchema(db, 0);
- }
-
-end_of_vacuum:
- if( rc && zErrMsg!=0 ){
- sqliteSetString(pzErrMsg, "unable to vacuum database - ",
- zErrMsg, (char*)0);
- }
- sqlite_exec(db, "ROLLBACK", 0, 0, 0);
- if( dbNew ) sqlite_close(dbNew);
- sqliteOsDelete(zTemp);
- sqliteFree(zTemp);
- sqliteFree(sVac.s1.z);
- sqliteFree(sVac.s2.z);
- if( zErrMsg ) sqlite_freemem(zErrMsg);
- if( rc==STQLITE_ABORT ) sVac.rc = STQLITE_ERROR;
- return sVac.rc;
-#endif
-}
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