Method LoadCache

Source/cmCacheManager.cxx:32–166

}

bool cmCacheManager::LoadCache(std::string const& path, bool internal,
                               std::set<std::string>& excludes,
                               std::set<std::string>& includes)
{
  std::string cacheFile = cmStrCat(path, "/CMakeCache.txt");
  // clear the old cache, if we are reading in internal values
  if (internal) {
    this->Cache.clear();
  }
  if (!cmSystemTools::FileExists(cacheFile)) {
    this->CleanCMakeFiles(path);
    return false;
  }

  cmsys::ifstream fin(cacheFile.c_str());
  if (!fin) {
    return false;
  }
  char const* realbuffer;
  std::string buffer;
  std::string entryKey;
  unsigned int lineno = 0;
  while (fin) {
    // Format is key:type=value
    std::string helpString;
    CacheEntry e;
    cmSystemTools::GetLineFromStream(fin, buffer);
    lineno++;
    realbuffer = buffer.c_str();
    while (*realbuffer == ' ' || *realbuffer == '\t' || *realbuffer == '\r' ||
           *realbuffer == '\n') {
      if (*realbuffer == '\n') {
        lineno++;
      }
      realbuffer++;
    }
    // skip blank lines and comment lines
    if (realbuffer[0] == '#' || realbuffer[0] == 0) {
      continue;
    }
    while (realbuffer[0] == '/' && realbuffer[1] == '/') {
      if ((realbuffer[2] == '\\') && (realbuffer[3] == 'n')) {
        helpString = cmStrCat(std::move(helpString), '\n', &realbuffer[4]);
      } else {
        helpString = cmStrCat(std::move(helpString), &realbuffer[2]);
      }
      cmSystemTools::GetLineFromStream(fin, buffer);
      lineno++;
      realbuffer = buffer.c_str();
      if (!fin) {
        continue;
      }
    }
    e.SetProperty("HELPSTRING", helpString);
    if (cmState::ParseCacheEntry(realbuffer, entryKey, e.Value, e.Type)) {
      if (excludes.find(entryKey) == excludes.end()) {
        // Load internal values if internal is set.
        // If the entry is not internal to the cache being loaded