Function get_alpine_installed_db_fields

src/packagedcode/alpine.py:194–217

Yield lists of (name, value) pairs, one list for each package found in an installed Alpine packages database file at `location` (typically found at '/lib/apk/db/installed' in an Alpine installation.) Note: APKINDEX index files are also in the same format. See: http://uk.alpinel

(location)

def get_alpine_installed_db_fields(location):
    """
    Yield lists of (name, value) pairs, one list for each package found in an
    installed Alpine packages database file at `location` (typically found at
    '/lib/apk/db/installed' in an Alpine installation.)

    Note: APKINDEX index files are also in the same format.
    See: http://uk.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
    """
    if not path.exists(location):
        return

    with open(location, 'rb') as f:
        installed = as_unicode(f.read())

    if installed:
        # each installed package paragraph is separated by LFLF
        packages = (p for p in re.split('\n\n', installed) if p)
        for pkg in packages:
            try:
                fields = email.message_from_string(pkg)
            except UnicodeEncodeError:
                fields = email.message_from_string(pkg.encode('utf-8'))
            yield [(n.strip(), v.strip(),) for n, v in fields.items()]


# these variables need to be resolved or else this is a parsing error