Fossil

    blob_set(pPath, &zUri[i]);
  }else{
    blob_set(pPath, "/");
  }
}

/*
** Construct a random temporary filename into zBuf[].
** Construct a random temporary filename into pBuf starting with zPrefix.
*/
void file_tempname(int nBuf, char *zBuf){
void file_tempname(Blob *pBuf, const char *zPrefix){
#if defined(_WIN32)
  const char *azDirs[] = {
     0, /* GetTempPath */
     0, /* TEMP */
     0, /* TMP */
     ".",
  };
#else
  static const char *const azDirs[] = {
     "/var/tmp",
     "/usr/tmp",
     "/tmp",
     "/temp",
     ".",
  };
#endif
  static const unsigned char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  unsigned int i, j;
  unsigned int i;
  const char *zDir = ".";
  int cnt = 0;
  char zRand[16];

#if defined(_WIN32)
  wchar_t zTmpPath[MAX_PATH];

  if( GetTempPathW(MAX_PATH, zTmpPath) ){
    azDirs[0] = fossil_path_to_utf8(zTmpPath);
  }

  azDirs[1] = fossil_getenv("TEMP");
  azDirs[2] = fossil_getenv("TMP");
#endif


  for(i=0; i<count(azDirs); i++){
    if( azDirs[i]==0 ) continue;
    if( !file_isdir(azDirs[i]) ) continue;
    zDir = azDirs[i];
    break;
  }

  /* Check that the output buffer is large enough for the temporary file
  ** name. If it is not, return SQLITE_ERROR.
  */
  if( (strlen(zDir) + 17) >= (size_t)nBuf ){
    fossil_fatal("insufficient space for temporary filename");
  }

  do{
    blob_zero(pBuf);
    if( cnt++>20 ) fossil_panic("cannot generate a temporary filename");
    sqlite3_snprintf(nBuf-17, zBuf, "%s/", zDir);
    j = (int)strlen(zBuf);
    sqlite3_randomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
    sqlite3_randomness(15, zRand);
    for(i=0; i<15; i++){
      zRand[i] = (char)zChars[ ((unsigned char)zRand[i])%(sizeof(zChars)-1) ];
    }
    zBuf[j] = 0;
  }while( file_size(zBuf)>=0 );
    zRand[15] = 0;
    blob_appendf(pBuf, "%s/%s.%s", zDir, zPrefix ? zPrefix : "", zRand);
  }while( file_size(blob_str(pBuf))>=0 );

#if defined(_WIN32)
  fossil_path_free((char *)azDirs[0]);
  fossil_path_free((char *)azDirs[1]);
  fossil_path_free((char *)azDirs[2]);
#endif
}