Function path_source_handle_preprocessor

src/util/path.cpp:822–853

}

static string path_source_handle_preprocessor(const string &preprocessor_line,
                                              const string &source_filepath,
                                              const size_t line_number,
                                              SourceReplaceState *state)
{
  string result = preprocessor_line;

  string rest_of_line = string_strip(preprocessor_line.substr(1));

  if (0 == strncmp(rest_of_line.c_str(), "include", 7)) {
    rest_of_line = string_strip(rest_of_line.substr(8));
    if (rest_of_line[0] == '"') {
      const size_t n_start = 1;
      const size_t n_end = rest_of_line.find("\"", n_start);
      const string filename = rest_of_line.substr(n_start, n_end - n_start);

      string filepath = path_join(state->base, filename);
      if (!path_exists(filepath)) {
        filepath = path_join(path_dirname(source_filepath), filename);
      }
      string text;
      if (path_read_text(filepath, text)) {
        text = path_source_replace_includes_recursive(text, filepath, state);
        /* Use line directives for better error messages. */
        result = line_directive(*state, filepath, 1) + "\n" + text + "\n" +
                 line_directive(*state, source_filepath, line_number + 1);
      }
    }
  }

  return result;
}

/* Our own little c preprocessor that replaces #includes with the file
 * contents, to work around issue of OpenCL drivers not supporting