bool PathsFrom()

in tools/runfiles/runfiles_src.cc [261:311]

• 43 lines of code
• 14 McCabe index (conditional complexity)

bool PathsFrom(const string& argv0, string mf, string dir,
               function<bool(const string&)> is_runfiles_manifest,
               function<bool(const string&)> is_runfiles_directory,
               string* out_manifest, string* out_directory) {
  out_manifest->clear();
  out_directory->clear();

  bool mfValid = is_runfiles_manifest(mf);
  bool dirValid = is_runfiles_directory(dir);

  if (!argv0.empty() && !mfValid && !dirValid) {
    mf = argv0 + ".runfiles/MANIFEST";
    dir = argv0 + ".runfiles";
    mfValid = is_runfiles_manifest(mf);
    dirValid = is_runfiles_directory(dir);
    if (!mfValid) {
      mf = argv0 + ".runfiles_manifest";
      mfValid = is_runfiles_manifest(mf);
    }
  }

  if (!mfValid && !dirValid) {
    return false;
  }

  if (!mfValid) {
    mf = dir + "/MANIFEST";
    mfValid = is_runfiles_manifest(mf);
    if (!mfValid) {
      mf = dir + "_manifest";
      mfValid = is_runfiles_manifest(mf);
    }
  }

  if (!dirValid &&
      (ends_with(mf, ".runfiles_manifest") || ends_with(mf, "/MANIFEST"))) {
    static const size_t kSubstrLen = 9;  // "_manifest" or "/MANIFEST"
    dir = mf.substr(0, mf.size() - kSubstrLen);
    dirValid = is_runfiles_directory(dir);
  }

  if (mfValid) {
    *out_manifest = mf;
  }

  if (dirValid) {
    *out_directory = dir;
  }

  return true;
}