def _extract_crates_used()

in build/fbcode_builder/getdeps/cargo.py [0:0]

• 19 lines of code
• 7 McCabe index (conditional complexity)

    def _extract_crates_used(cargo_toml_file, dep_to_git):
        """
        This functions reads content of provided cargo toml file and extracts
        crate names per each dependency. The extraction is done by a heuristic
        so it might be incorrect.
        """
        deps_to_crates = {}
        with open(cargo_toml_file, "r") as f:
            for line in f.readlines():
                if line.startswith("#") or "git = " not in line:
                    continue  # filter out commented lines and ones without git deps
                for dep_name, conf in dep_to_git.items():
                    # Only redirect deps that point to git URLS
                    if 'git = "{}"'.format(conf["repo_url"]) in line:
                        pkg_template = ' package = "'
                        if pkg_template in line:
                            crate_name, _, _ = line.partition(pkg_template)[
                                2
                            ].partition('"')
                        else:
                            crate_name, _, _ = line.partition("=")
                        deps_to_crates.setdefault(dep_name, set()).add(
                            crate_name.strip()
                        )
        return deps_to_crates