def format_dependency()

in scripts/build_deps.py [0:0]

• 10 lines of code
• 2 McCabe index (conditional complexity)

def format_dependency(line):
    """
    This attempts to extract Maven dependencies and versions from a line of output from mvn dependency:tree

    An example line without specifiers:

    ``[INFO] +- software.amazon.kinesis:amazon-kinesis-client:jar:2.1.2:compile``

    This fields in the line in order are:
    1. Group Id: software.amazon.kinesis
    2. Artifact Id: amazon-kinesis-client
    3. Packaging: jar (not used)
    4. Version: 2.1.2
    5. Dependency type: compile (this will be runtime or compile)

    An example line with specifiers:

    ``[INFO] |  |  +- io.netty:netty-transport-native-epoll:jar:linux-x86_64:4.1.32.Final:compile``

    The fields in order are:
    1. Group Id: io.netty
    2. Artifact Id: netty-transport-native-epoll
    3. Packaging: jar (not used)
    4. Specifier: linux-x86_64 (not used)
    5. Version: 4.1.32.Final
    6. Dependency type: compile (this will be runtime or compile)

    :param str line: the line to extract version information from
    :return: the version information needed to retrieve the jars from Maven Central
    """
    match = re.match(r'^[\\\s+|-]*(?P<dep_line>[^\s]+)', line)
    assert match is not None
    items = match.groupdict()['dep_line'].split(":")
    version_idx = 3
    if len(items) > 5:
        version_idx = 4

    return "('{group_id}', '{artifact_id}', '{version}')".format(group_id=items[0],
                                                                 artifact_id=items[1],
                                                                 version=items[version_idx])