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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Add the sqlite_temp_directory global variable which, if set, defines the directory in which temporary files are created. (CVS 1316)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | version_2
Files: files | file ages | folders
SHA1: c90ed20dc4f95eb06a5259578597593f5968bfb7
User & Date: drh 2004-05-07 00:57:06
Context
2004-05-07
01:46
Fix a memory leak in DETACH when using the codec. (CVS 1317) check-in: c4bd99b7 user: drh tags: version_2
00:57
Add the sqlite_temp_directory global variable which, if set, defines the directory in which temporary files are created. (CVS 1316) check-in: c90ed20d user: drh tags: version_2
2004-04-29
16:16
Fix a stack overflow problem with INSTEAD OF triggers. (CVS 1310) check-in: 5a33e0b0 user: drh tags: version_2
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/os.c.

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    return SQLITE_CANTOPEN; 
  }
  TRACE3("OPENDIR %-3d %s\n", id->dirfd, zDirname);
#endif
  return SQLITE_OK;
}








/*
** Create a temporary file name in zBuf.  zBuf must be big enough to
** hold at least SQLITE_TEMPNAME_SIZE characters.
*/
int sqliteOsTempFileName(char *zBuf){
#if OS_UNIX
  static const char *azDirs[] = {

     "/var/tmp",
     "/usr/tmp",
     "/tmp",
     ".",
  };
  static unsigned char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;
  struct stat buf;
  const char *zDir = ".";

  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){

    if( stat(azDirs[i], &buf) ) continue;
    if( !S_ISDIR(buf.st_mode) ) continue;
    if( access(azDirs[i], 07) ) continue;
    zDir = azDirs[i];
    break;
  }
  do{
................................................................................
#endif
#if OS_WIN
  static char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;

  char zTempPath[SQLITE_TEMPNAME_SIZE];

  GetTempPath(SQLITE_TEMPNAME_SIZE-30, zTempPath);
  for(i=strlen(zTempPath); i>0 && zTempPath[i-1]=='\\'; i--){}
  zTempPath[i] = 0;




  for(;;){
    sprintf(zBuf, "%s\\"TEMP_FILE_PREFIX, zTempPath);
    j = strlen(zBuf);
    sqliteRandomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
    if( !sqliteOsFileExists(zBuf) ) break;
................................................................................
#endif
#if OS_MAC
  static char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;

  char zTempPath[SQLITE_TEMPNAME_SIZE];
  char zdirName[32];
  CInfoPBRec infoRec;
  Str31 dirName;
  memset(&infoRec, 0, sizeof(infoRec));
  memset(zTempPath, 0, SQLITE_TEMPNAME_SIZE);


  if( FindFolder(kOnSystemDisk, kTemporaryFolderType,  kCreateFolder,
       &(infoRec.dirInfo.ioVRefNum), &(infoRec.dirInfo.ioDrParID)) == noErr ){
    infoRec.dirInfo.ioNamePtr = dirName;
    do{
      infoRec.dirInfo.ioFDirIndex = -1;
      infoRec.dirInfo.ioDrDirID = infoRec.dirInfo.ioDrParID;
      if( PBGetCatInfoSync(&infoRec) == noErr ){
        CopyPascalStringToC(dirName, zdirName);
................................................................................
        strcpy(zTempPath, zdirName);
        zTempPath[i] = ':';
      }else{
        *zTempPath = 0;
        break;
      }
    } while( infoRec.dirInfo.ioDrDirID != fsRtDirID );

  }
  if( *zTempPath == 0 )

    getcwd(zTempPath, SQLITE_TEMPNAME_SIZE-24);


  for(;;){
    sprintf(zBuf, "%s"TEMP_FILE_PREFIX, zTempPath);
    j = strlen(zBuf);
    sqliteRandomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
    if( !sqliteOsFileExists(zBuf) ) break;







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    return SQLITE_CANTOPEN; 
  }
  TRACE3("OPENDIR %-3d %s\n", id->dirfd, zDirname);
#endif
  return SQLITE_OK;
}

/*
** If the following global variable points to a string which is the
** name of a directory, then that directory will be used to store
** temporary files.
*/
const char *sqlite_temp_directory = 0;

/*
** Create a temporary file name in zBuf.  zBuf must be big enough to
** hold at least SQLITE_TEMPNAME_SIZE characters.
*/
int sqliteOsTempFileName(char *zBuf){
#if OS_UNIX
  static const char *azDirs[] = {
     0,
     "/var/tmp",
     "/usr/tmp",
     "/tmp",
     ".",
  };
  static unsigned char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;
  struct stat buf;
  const char *zDir = ".";
  azDirs[0] = sqlite_temp_directory;
  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
    if( azDirs[i]==0 ) continue;
    if( stat(azDirs[i], &buf) ) continue;
    if( !S_ISDIR(buf.st_mode) ) continue;
    if( access(azDirs[i], 07) ) continue;
    zDir = azDirs[i];
    break;
  }
  do{
................................................................................
#endif
#if OS_WIN
  static char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;
  char *zDir;
  char zTempPath[SQLITE_TEMPNAME_SIZE];
  if( sqlite_temp_directory==0 ){
    GetTempPath(SQLITE_TEMPNAME_SIZE-30, zTempPath);
    for(i=strlen(zTempPath); i>0 && zTempPath[i-1]=='\\'; i--){}
    zTempPath[i] = 0;
    zDir = zTempPath;
  }else{
    zDir = sqlite_temp_directory;
  }
  for(;;){
    sprintf(zBuf, "%s\\"TEMP_FILE_PREFIX, zDir);
    j = strlen(zBuf);
    sqliteRandomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
    if( !sqliteOsFileExists(zBuf) ) break;
................................................................................
#endif
#if OS_MAC
  static char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  int i, j;
  char *zDir;
  char zTempPath[SQLITE_TEMPNAME_SIZE];
  char zdirName[32];
  CInfoPBRec infoRec;
  Str31 dirName;
  memset(&infoRec, 0, sizeof(infoRec));
  memset(zTempPath, 0, SQLITE_TEMPNAME_SIZE);
  if( sqlite_temp_directory!=0 ){
    zDir = sqlite_temp_directory;
  }else if( FindFolder(kOnSystemDisk, kTemporaryFolderType,  kCreateFolder,
       &(infoRec.dirInfo.ioVRefNum), &(infoRec.dirInfo.ioDrParID)) == noErr ){
    infoRec.dirInfo.ioNamePtr = dirName;
    do{
      infoRec.dirInfo.ioFDirIndex = -1;
      infoRec.dirInfo.ioDrDirID = infoRec.dirInfo.ioDrParID;
      if( PBGetCatInfoSync(&infoRec) == noErr ){
        CopyPascalStringToC(dirName, zdirName);
................................................................................
        strcpy(zTempPath, zdirName);
        zTempPath[i] = ':';
      }else{
        *zTempPath = 0;
        break;
      }
    } while( infoRec.dirInfo.ioDrDirID != fsRtDirID );
    zDir = zTempPath;
  }

  if( zDir[0]==0 ){
    getcwd(zTempPath, SQLITE_TEMPNAME_SIZE-24);
    zDir = zTempPath;
  }
  for(;;){
    sprintf(zBuf, "%s"TEMP_FILE_PREFIX, zDir);
    j = strlen(zBuf);
    sqliteRandomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
    if( !sqliteOsFileExists(zBuf) ) break;

Changes to src/test1.c.

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**    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 1.36 2004/02/22 17:49:34 drh Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

................................................................................
** Register commands with the TCL interpreter.
*/
int Sqlitetest1_Init(Tcl_Interp *interp){
  extern int sqlite_search_count;
  extern int sqlite_interrupt_count;
  extern int sqlite_open_file_count;
  extern int sqlite_current_time;

  static struct {
     char *zName;
     Tcl_CmdProc *xProc;
  } aCmd[] = {
     { "sqlite_mprintf_int",             (Tcl_CmdProc*)sqlite_mprintf_int    },
     { "sqlite_mprintf_str",             (Tcl_CmdProc*)sqlite_mprintf_str    },
     { "sqlite_mprintf_double",          (Tcl_CmdProc*)sqlite_mprintf_double },
................................................................................
      (char*)&sqlite_interrupt_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_open_file_count", 
      (char*)&sqlite_open_file_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_current_time", 
      (char*)&sqlite_current_time, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_static_bind_value",
      (char*)&sqlite_static_bind_value, TCL_LINK_STRING);


  return TCL_OK;
}







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**    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 1.36.2.1 2004/05/07 00:57:06 drh Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

................................................................................
** Register commands with the TCL interpreter.
*/
int Sqlitetest1_Init(Tcl_Interp *interp){
  extern int sqlite_search_count;
  extern int sqlite_interrupt_count;
  extern int sqlite_open_file_count;
  extern int sqlite_current_time;
  extern int sqlite_temp_directory;
  static struct {
     char *zName;
     Tcl_CmdProc *xProc;
  } aCmd[] = {
     { "sqlite_mprintf_int",             (Tcl_CmdProc*)sqlite_mprintf_int    },
     { "sqlite_mprintf_str",             (Tcl_CmdProc*)sqlite_mprintf_str    },
     { "sqlite_mprintf_double",          (Tcl_CmdProc*)sqlite_mprintf_double },
................................................................................
      (char*)&sqlite_interrupt_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_open_file_count", 
      (char*)&sqlite_open_file_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_current_time", 
      (char*)&sqlite_current_time, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_static_bind_value",
      (char*)&sqlite_static_bind_value, TCL_LINK_STRING);
  Tcl_LinkVar(interp, "sqlite_temp_directory",
      (char*)&sqlite_temp_directory, TCL_LINK_STRING);
  return TCL_OK;
}