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#!/usr/bin/env python

from collections import namedtuple

import argparse

import base64

import copy

import json

import subprocess

import sys

import urllib.parse

import urllib.request

import urllib.error

class Error(Exception):

pass

class Version(object):

def __init__(self, version):

versions = version.split(sep='.')

if len(versions) < 2 or len(versions) > 3:

raise Error("Invalid version string '{}'".format(version))

self.major = int(versions[0])

self.minor = int(versions[1])

self.revision = int(versions[2]) if len(versions) == 3 else 0

def __str__(self):

return '{}.{}.{}'.format(self.major, self.minor, self.revision)

def __eq__(self, other):

return self.major == other.major and self.minor == other.minor and self.revision == other.revision

def verify_version(version):

expected = {

'VERSION': [ '"{}"'.format(version), None ],

'VER_MAJOR': [ str(version.major), None ],

'VER_MINOR': [ str(version.minor), None ],

'VER_REVISION': [ str(version.revision), None ],

'VER_PATCH': [ '0', None ],

'SOVERSION': [ '"{}.{}"'.format(version.major, version.minor), None ],

}

# Parse CMakeLists

with open('CMakeLists.txt') as f:

for line in f.readlines():

if line.startswith('project(libgit2 VERSION "{}"'.format(version)):

break

else:

raise Error("cmake: invalid project definition")

# Parse version.h

with open('include/git2/version.h') as f:

lines = f.readlines()

for key in expected.keys():

define = '#define LIBGIT2_{} '.format(key)

for line in lines:

if line.startswith(define):

expected[key][1] = line[len(define):].strip()

break

else:

raise Error("version.h: missing define for '{}'".format(key))

for k, v in expected.items():

if v[0] != v[1]:

raise Error("version.h: define '{}' does not match (got '{}', expected '{}')".format(k, v[0], v[1]))

with open('package.json') as f:

pkg = json.load(f)

try:

pkg_version = Version(pkg["version"])

except KeyError as err:

raise Error("package.json: missing the field {}".format(err))

if pkg_version != version:

raise Error("package.json: version does not match (got '{}', expected '{}')".format(pkg_version, version))

def generate_relnotes(tree, version):

with open('docs/changelog.md') as f:

lines = f.readlines()

if not lines[0].startswith('v'):

raise Error("changelog.md: missing section for v{}".format(version))

try:

v = Version(lines[0][1:].strip())

except:

raise Error("changelog.md: invalid version string {}".format(lines[0].strip()))

if v != version:

raise Error("changelog.md: changelog version doesn't match (got {}, expected {})".format(v, version))

if not lines[1].startswith('----'):

raise Error("changelog.md: missing version header")

if lines[2] != '\n':

raise Error("changelog.md: missing newline after version header")

for i, line in enumerate(lines[3:]):

if not line.startswith('v'):

continue

try:

Version(line[1:].strip())

break

except:

continue

else:

raise Error("changelog.md: cannot find section header of preceding release")

return ''.join(lines[3:i + 3]).strip()

def git(*args):

process = subprocess.run([ 'git', *args ], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

if process.returncode != 0:

raise Error('Failed executing git {}: {}'.format(' '.join(args), process.stderr.decode()))

return process.stdout

def post(url, data, contenttype, user, password):

request = urllib.request.Request(url, data=data)

request.add_header('Accept', 'application/json')

request.add_header('Content-Type', contenttype)

request.add_header('Content-Length', len(data))

request.add_header('Authorization', 'Basic ' + base64.b64encode('{}:{}'.format(user, password).encode()).decode())

try:

response = urllib.request.urlopen(request)

if response.getcode() != 201:

raise Error("POST to '{}' failed: {}".format(url, response.reason))

except urllib.error.URLError as e:

raise Error("POST to '{}' failed: {}".format(url, e))

data = json.load(response)

return data

def generate_asset(version, tree, archive_format):

Asset = namedtuple('Asset', ['name', 'label', 'mimetype', 'data'])

mimetype = 'application/{}'.format('gzip' if archive_format == 'tar.gz' else 'zip')

return Asset(

"libgit2-{}.{}".format(version, archive_format), "Release sources: libgit2-{}.{}".format(version, archive_format), mimetype,

git('archive', '--format', archive_format, '--prefix', 'libgit2-{}/'.format(version), tree)

)

def release(args):

params = {

"tag_name": 'v' + str(args.version),

"name": 'libgit2 v' + str(args.version),

"target_commitish": git('rev-parse', args.tree).decode().strip(),

"body": generate_relnotes(args.tree, args.version),

}

assets = [

generate_asset(args.version, args.tree, 'tar.gz'),

generate_asset(args.version, args.tree, 'zip'),

]

if args.dryrun:

for k, v in params.items():

print('{}: {}'.format(k, v))

for asset in assets:

print('asset: name={}, label={}, mimetype={}, bytes={}'.format(asset.name, asset.label, asset.mimetype, len(asset.data)))

return

try:

url = 'https://api.github.com/repos/{}/releases'.format(args.repository)

response = post(url, json.dumps(params).encode(), 'application/json', args.user, args.password)

except Error as e:

raise Error('Could not create release: ' + str(e))

for asset in assets:

try:

url = list(urllib.parse.urlparse(response['upload_url'].split('{?')[0]))

url[4] = urllib.parse.urlencode({ 'name': asset.name, 'label': asset.label })

post(urllib.parse.urlunparse(url), asset.data, asset.mimetype, args.user, args.password)

except Error as e:

raise Error('Could not upload asset: ' + str(e))

def main():

parser = argparse.ArgumentParser(description='Create a libgit2 release')

parser.add_argument('--tree', default='HEAD', help='tree to create release for (default: HEAD)')

parser.add_argument('--dryrun', action='store_true', help='generate release, but do not post it')

parser.add_argument('--repository', default='libgit2/libgit2', help='GitHub repository to create repository in')

parser.add_argument('--user', help='user to authenticate as')

parser.add_argument('--password', help='password to authenticate with')

parser.add_argument('version', type=Version, help='version of the new release')

args = parser.parse_args()

verify_version(args.version)

release(args)

if __name__ == '__main__':

try:

main()

except Error as e:

print(e)

sys.exit(1)