SQLite

**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.228 2004/06/19 03:33:57 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** A pointer to this structure is used to communicate information

int sqlite3_last_statement_changes(sqlite *db){
  return db->lsChange;
}

/*
** Close an existing SQLite database
*/
int sqlite3_close(sqlite *db){
  HashElem *i;
  int j;

  if( !db ){
    return SQLITE_OK;
  }

  /* If there are any outstanding VMs, return SQLITE_BUSY. */
  if( db->pVdbe ){
    sqlite3Error(db, SQLITE_BUSY, 
        "Unable to close due to unfinalised statements");
    return SQLITE_BUSY;
  }
  assert( !sqlite3SafetyCheck(db) );

  /* FIX ME: db->magic may be set to SQLITE_MAGIC_CLOSED if the database
  ** cannot be opened for some reason. So this routine needs to run in
  ** that case. But maybe there should be an extra magic value for the
  ** "failed to open" state.
  */
  if( db->magic!=SQLITE_MAGIC_CLOSED && sqlite3SafetyOn(db) ){

    /* printf("DID NOT CLOSE\n"); fflush(stdout); */
    return SQLITE_ERROR;
  }


  for(j=0; j<db->nDb; j++){
    struct Db *pDb = &db->aDb[j];
    if( pDb->pBt ){
      sqlite3BtreeClose(pDb->pBt);
      pDb->pBt = 0;
    }
  }

  sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */
  if( db->pValue ){
    sqlite3ValueFree(db->pValue);
  }
  if( db->pErr ){
    sqlite3ValueFree(db->pErr);
  }

  db->magic = SQLITE_MAGIC_ERROR;
  sqliteFree(db);
  return SQLITE_OK;
}

/*
** Rollback all database files.
*/
void sqlite3RollbackAll(sqlite *db){
  int i;

**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This header file defines the interface that the SQLite library
** presents to client programs.
**
** @(#) $Id: sqlite.h.in,v 1.103 2004/06/19 03:33:57 danielk1977 Exp $
*/
#ifndef _SQLITE_H_
#define _SQLITE_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.

/*
** A function to close the database.
**
** Call this function with a pointer to a structure that was previously
** returned from sqlite3_open() and the corresponding database will by closed.
**
** All SQL statements prepared using sqlite3_prepare() or
** sqlite3_prepare16() must be deallocated using sqlite3_finalize() before
** this routine is called. Otherwise, SQLITE_BUSY is returned and the
** database connection remains open.
*/
int sqlite3_close(sqlite *);

/*
** The type for a callback function.
*/
typedef int (*sqlite_callback)(void*,int,char**, char**);

/*

/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.290 2004/06/19 03:33:57 danielk1977 Exp $
*/
#include "config.h"
#include "sqlite3.h"
#include "hash.h"
#include "parse.h"
#include <stdio.h>
#include <stdlib.h>

struct sqlite {
  int nDb;                      /* Number of backends currently in use */
  Db *aDb;                      /* All backends */
  Db aDbStatic[2];              /* Static space for the 2 default backends */
  int flags;                    /* Miscellanous flags. See below */
  u8 file_format;               /* What file format version is this database? */
  u8 safety_level;              /* How aggressive at synching data to disk */

  u8 temp_store;                /* 1=file, 2=memory, 0=compile-time default */
  int next_cookie;              /* Next value of aDb[0].schema_cookie */
  int cache_size;               /* Number of pages to use in the cache */
  int nTable;                   /* Number of tables in the database */
  BusyHandler busyHandler;      /* Busy callback */
  void *pCommitArg;             /* Argument to xCommitCallback() */   
  int (*xCommitCallback)(void*);/* Invoked at every commit. */

**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the printf() interface to SQLite.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test1.c,v 1.79 2004/06/19 03:33:57 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

static int sqlite_test_close(
  void *NotUsed,
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int argc,              /* Number of arguments */
  char **argv            /* Text of each argument */
){
  sqlite *db;
  int rc;
  if( argc!=2 ){
    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
       " FILENAME\"", 0);
    return TCL_ERROR;
  }
  if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
  rc = sqlite3_close(db);
  Tcl_SetResult(interp, errorName(rc), TCL_STATIC);
  return TCL_OK;
}

/*
** Implementation of the x_coalesce() function.
** Return the first argument non-NULL argument.
*/

**
*************************************************************************
** Utility functions used throughout sqlite.
**
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.105 2004/06/19 03:33:57 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
#include <ctype.h>

#if SQLITE_DEBUG>2 && defined(__GLIBC__)
#include <execinfo.h>

** call to sqlite3_close(db) and db has been deallocated.  And we do
** not want to write into deallocated memory.
*/
int sqlite3SafetyOn(sqlite *db){
  if( db->magic==SQLITE_MAGIC_OPEN ){
    db->magic = SQLITE_MAGIC_BUSY;
    return 0;
  }else if( db->magic==SQLITE_MAGIC_BUSY || db->magic==SQLITE_MAGIC_ERROR ){

    db->magic = SQLITE_MAGIC_ERROR;
    db->flags |= SQLITE_Interrupt;
  }
  return 1;
}

/*
** Change the magic from SQLITE_MAGIC_BUSY to SQLITE_MAGIC_OPEN.
** Return an error (non-zero) if the magic was not SQLITE_MAGIC_BUSY
** when this routine is called.
*/
int sqlite3SafetyOff(sqlite *db){
  if( db->magic==SQLITE_MAGIC_BUSY ){
    db->magic = SQLITE_MAGIC_OPEN;
    return 0;
  }else if( db->magic==SQLITE_MAGIC_OPEN || db->magic==SQLITE_MAGIC_ERROR ){

    db->magic = SQLITE_MAGIC_ERROR;
    db->flags |= SQLITE_Interrupt;
  }
  return 1;
}

/*

      sqlite3Error(p->db, SQLITE_MISUSE, 0);
    }
    return SQLITE_MISUSE;
  }
  db = p->db;
  rc = sqlite3VdbeReset(p, pzErrMsg);
  sqlite3VdbeDelete(p);



  if( rc==SQLITE_SCHEMA ){
    sqlite3ResetInternalSchema(db, 0);
  }
  return rc;
}

/*

# 2003 January 29
#
# 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 implements regression tests for SQLite library.  The
# focus of this script testing the callback-free C/C++ API.
#
# $Id: capi3.test,v 1.12 2004/06/19 03:33:57 danielk1977 Exp $
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Return the UTF-16 representation of the supplied UTF-8 string $str.
# If $nt is true, append two 0x00 bytes as a nul terminator.

# as follows:
#
# capi3-1.*: Test sqlite3_prepare 
# capi3-2.*: Test sqlite3_prepare16
# capi3-3.*: Test sqlite3_open
# capi3-4.*: Test sqlite3_open16
# capi3-5.*: Test the various sqlite3_result_* APIs
# capi3-6.*: Test that sqlite3_close fails if there are outstanding VMs.
#

db close
set DB [sqlite3 db test.db]

do_test capi3-1.1 {
  set STMT [sqlite3_prepare $DB {SELECT name FROM sqlite_master} -1 TAIL]

do_test capi3-3.1 {
  set db2 [sqlite3_open test.db {}]
  sqlite3_errcode $db2
} {SQLITE_OK}
# FIX ME: Should test the db handle works.
do_test capi3-3.2 {
  sqlite3_close $db2
} {SQLITE_OK}
do_test capi3-3.3 {
  catch {
    set db2 [sqlite3_open /bogus/path/test.db {}]
  }
  sqlite3_errcode $db2
} {SQLITE_CANTOPEN}
do_test capi3-3.4 {
  sqlite3_errmsg $db2
} {unable to open database file}
do_test capi3-3.5 {
  sqlite3_close $db2
} {SQLITE_OK}

# rename sqlite3_open ""
# rename sqlite3_open_old sqlite3_open

do_test capi3-4.1 {
  set db2 [sqlite3_open16 [utf16 test.db] {}]
  sqlite3_errcode $db2
} {SQLITE_OK}
# FIX ME: Should test the db handle works.
do_test capi3-4.2 {
  sqlite3_close $db2
} {SQLITE_OK}
do_test capi3-4.3 {
  catch {
    set db2 [sqlite3_open16 [utf16 /bogus/path/test.db] {}]
  }
  sqlite3_errcode $db2
} {SQLITE_CANTOPEN}
do_test capi3-4.4 {
  utf8 [sqlite3_errmsg16 $db2]
} {unable to open database file}
do_test capi3-4.5 {
  sqlite3_close $db2
} {SQLITE_OK}

# This proc is used to test the following API calls:
#
# sqlite3_column_count
# sqlite3_column_name
# sqlite3_column_name16
# sqlite3_column_decltype

} SQLITE_DONE

do_test capi3-5.12 {
  sqlite3_finalize $STMT
} SQLITE_OK

db close

do_test capi3-6.0 {
  set DB [sqlite3_open test.db]
  set sql {SELECT a FROM t1 order by rowid}
  set STMT [sqlite3_prepare $DB $sql -1 TAIL]
  expr 0
} {0}
do_test capi3-6.1 {
  sqlite3_close $DB
} {SQLITE_BUSY}
do_test capi3-6.2 {
  sqlite3_step $STMT
} {SQLITE_ROW}
check_data $STMT capi3-6.3 {INTEGER} {1} {1.0} {1}
do_test capi3-6.3 {
  sqlite3_finalize $STMT
} {SQLITE_OK}
do_test capi3-6.4 {
  sqlite3_close $DB
} {SQLITE_OK}

finish_test

#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the sqlite_exec_printf() and
# sqlite_get_table_printf() APIs.
#
# $Id: tableapi.test,v 1.9 2004/06/19 03:33:57 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tableapi-1.0 {
  set ::dbx [sqlite3_open test.db]
  catch {sqlite_exec_printf $::dbx {DROP TABLE xyz} {}}

  append sql )
  sqlite3_get_table_printf $::dbx $sql {}
  sqlite3_get_table_printf $::dbx {SELECT * FROM t2} {}
} {0 2 100 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 x18 x19 x20 x21 x22 x23 x24 x25 x26 x27 x28 x29 x30 x31 x32 x33 x34 x35 x36 x37 x38 x39 x40 x41 x42 x43 x44 x45 x46 x47 x48 x49 x50 x51 x52 x53 x54 x55 x56 x57 x58 x59 x60 x61 x62 x63 x64 x65 x66 x67 x68 x69 x70 x71 x72 x73 x74 x75 x76 x77 x78 x79 x80 x81 x82 x83 x84 x85 x86 x87 x88 x89 x90 x91 x92 x93 x94 x95 x96 x97 x98 x99 x100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100}

do_test tableapi-99.0 {
  sqlite3_close $::dbx
} {SQLITE_OK}

finish_test