Method IsAbsolutePath

tests/gtest/src/gtest-filepath.cc:259–270

Returns true if pathname describes an absolute path.

// Returns true if pathname describes an absolute path.
bool FilePath::IsAbsolutePath() const {
  const char* const name = pathname_.c_str();
#if GTEST_OS_WINDOWS
  return pathname_.length() >= 3 &&
     ((name[0] >= 'a' && name[0] <= 'z') ||
      (name[0] >= 'A' && name[0] <= 'Z')) &&
     name[1] == ':' &&
     IsPathSeparator(name[2]);
#else
  return IsPathSeparator(name[0]);
#endif
}

// Returns a pathname for a file that does not currently exist. The pathname
// will be directory/base_name.extension or