Fossil

  }
  if( zHome==0 ){
    if( isOptional ) return 0;
    fossil_fatal("cannot locate home directory - please set the "
                 "FOSSIL_HOME or HOME environment variables");
  }
#endif
  if( file_isdir(zHome, ExtFILE)!=1 ){
    if( isOptional ) return 0;
    fossil_fatal("invalid home directory: %s", zHome);
  }
#if defined(_WIN32) || defined(__CYGWIN__)
  /* . filenames give some window systems problems and many apps problems */
  zDbName = mprintf("%//_fossil", zHome);
#else
  zDbName = mprintf("%s/.fossil", zHome);
#endif
  if( file_size(zDbName, ExtFILE)<1024*3 ){
    if( file_access(zHome, W_OK) ){
      if( isOptional ) return 0;
      fossil_fatal("home directory %s must be writeable", zHome);
    }
    db_init_database(zDbName, zConfigSchema, (char*)0);
  }
  if( file_access(zDbName, W_OK) ){

** true.  If it is not a valid local database file, return 0.
*/
static int isValidLocalDb(const char *zDbName){
  i64 lsize;
  char *zVFileDef;

  if( file_access(zDbName, F_OK) ) return 0;
  lsize = file_size(zDbName, ExtFILE);
  if( lsize%1024!=0 || lsize<4096 ) return 0;
  db_open_or_attach(zDbName, "localdb");
  zVFileDef = db_text(0, "SELECT sql FROM localdb.sqlite_master"
                         " WHERE name=='vfile'");
  if( zVFileDef==0 ) return 0;

  /* If the "isexe" column is missing from the vfile table, then

    if( g.localOpen ){
      zDbName = db_repository_filename();
    }
    if( zDbName==0 ){
      db_err("unable to find the name of a repository database");
    }
  }
  if( file_access(zDbName, R_OK) || file_size(zDbName, ExtFILE)<1024 ){
    if( file_access(zDbName, F_OK) ){
#ifdef FOSSIL_ENABLE_JSON
      g.json.resultCode = FSL_JSON_E_DB_NOT_FOUND;
#endif
      fossil_panic("repository does not exist or"
                   " is in an unreadable directory: %s", zDbName);
    }else if( file_access(zDbName, R_OK) ){

** option to locate the repository.  If no such option is available, then
** use the repository of the open checkout if there is one.
**
** Error out if the repository cannot be opened.
*/
void db_find_and_open_repository(int bFlags, int nArgUsed){
  const char *zRep = find_repository_option();
  if( zRep && file_isdir(zRep, ExtFILE)==1 ){
    goto rep_not_found;
  }
  if( zRep==0 && nArgUsed && g.argc==nArgUsed+1 ){
    zRep = g.argv[nArgUsed];
  }
  if( zRep==0 ){
    if( db_open_local(0)==0 ){

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=3 ){
    usage("REPOSITORY-NAME");
  }

  if( -1 != file_size(g.argv[2], ExtFILE) ){
    fossil_fatal("file already exists: %s", g.argv[2]);
  }

  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0, 0);
  if( zTemplate ) db_attach(zTemplate, "settingSrc");

      blob_append(&versionedPathname, ".no-warn", -1);
      blob_zero(&noWarnFile);
      if( historical_blob(g.zOpenRevision, blob_str(&versionedPathname),
          &noWarnFile, 0) ){
        noWarn = 1;
      }
      blob_reset(&noWarnFile);
    }else if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
      /* File exists, and contains the value for this setting. Load from
      ** the file. */
      const char *zFile = blob_str(&versionedPathname);
      if( blob_read_from_file(&setting, zFile, ExtFILE)>=0 ){
        found = 1;
      }
      /* See if there's a no-warn flag */
      blob_append(&versionedPathname, ".no-warn", -1);
      if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
        noWarn = 1;
      }
    }
    blob_reset(&versionedPathname);
    if( found ){
      blob_trim(&setting); /* Avoid non-obvious problems with line endings
                           ** on boolean properties */

  }
  if( pSetting->versionable && g.localOpen ){
    /* Check to see if this is overridden by a versionable settings file */
    Blob versionedPathname;
    blob_zero(&versionedPathname);
    blob_appendf(&versionedPathname, "%s.fossil-settings/%s",
                 g.zLocalRoot, pSetting->name);
    if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
      fossil_print("  (overridden by contents of file .fossil-settings/%s)\n",
                   pSetting->name);
    }
  }
  db_finalize(&q);
}