#!/usr/bin/python
# Copyright (c) 2011, Red Hat, Inc
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name of Red Hat nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Alexander Kurtakov <akurtako@redhat.com>

import sys
import os.path
import zipfile
from zipfile import ZipFile

class TagBuilder:

    def __init__ (self, filelist=None):
        if filelist == None:
            filelist = sys.stdin
        paths = map (lambda x: x.rstrip (), filelist.readlines ())
        for path in paths:
            self.get_osgi_require (path)

    def normalize_manifest(self, manifest):
        lines = []
        for line in manifest.readlines():
            if line.startswith(' '):
                lines[-1] += line.strip()
            else:
                lines.append(line.strip())
        return lines

    def parse_manifest (self, manifest):
        headers = {}
        DELIM = ": "
        for line in self.normalize_manifest(manifest):
            split = line.split(DELIM)
            if len(split) > 1:
                name = split[0].strip()
                headers[name]= split[1].strip()
        return headers

    def split_bundle_name (self, bundles):
        bundlenames = []
        bundleline = ""
        for bundle in bundles.split(','):
            if not bundle:
                continue
            if "(" in bundle or "[" in bundle:
                bundleline = bundle
                continue
            if bundleline:
                bundle = bundleline + bundle
            if ":=optional" in bundle:
                bundleline = ""
                continue
            if ";" in bundle:
                bundlenames.append(bundle.split(";")[0].strip())
            else:
                bundlenames.append(bundle.strip())
            bundleline = ""
        return bundlenames

    def get_osgi_require (self, path):
        if not os.path.islink(path):
            if zipfile.is_zipfile(path):
                jarfile = ZipFile(path)
                if "META-INF/MANIFEST.MF" in jarfile.namelist():
                    manifest = jarfile.open("META-INF/MANIFEST.MF")
                    headers = self.parse_manifest(manifest)
                    if headers.get("Require-Bundle"):
                        for bundle in self.split_bundle_name(headers.get("Require-Bundle")):
                            if bundle != "system.bundle":
                                print "osgi(%s)" %(bundle)

if __name__ == "__main__":
    builder = TagBuilder ()