crates2pkgbuild

crates2pkgbuild

#!/usr/bin/env python3

import json
import urllib.request
import sys

template = '''\
# Maintainer: BennyYip <yebenmy@protonmail.com>
pkgname={pkgname}
_pkgname={name}
pkgver={max_version}
pkgrel=1
pkgdesc="{description}"
arch=('x86_64')
url="{homepage}"
license=('{license}')
makedepends=('rust' 'cargo')
depends=()
provides=("$_pkgname")
source=($_pkgname.tar.gz::"https://crates.io//api/v1/crates/$_pkgname/$pkgver/download")
sha256sums=('SKIP')

build() {{
  cd $srcdir/$_pkgname-$pkgver
  CARGO_INCREMENTAL=0 cargo build --release
}}

package() {{
  cd $srcdir/$_pkgname-$pkgver
  install -Dm 755 "target/release/$pkgname" "$pkgdir/usr/bin/$pkgname"
}}

# vim:set sw=2 et:
'''


def get_pkgbuild(j):
    info = j['crate']
    info['name'] = info['name'].lower()
    if info['homepage'] is None:
        info['homepage'] = info['repository']
    try:
        info['license'] = j['versions'][0]['license'].split()[0]
    except IndexError:
        info['license'] = '(FIXME)'
    s = template.format_map(info)
    return s


def get_json(name):
    url = f'https://crates.io//api/v1/crates/{name}'
    res = urllib.request.urlopen(url)
    data = res.read().decode('utf-8')
    j = json.loads(data)
    return j


def main():
    if len(sys.argv) < 2:
        sys.exit('Crate name?')
    name = sys.argv[1]
    if len(sys.argv) > 2:
        pkgname = sys.argv[2]
    else:
        pkgname = name

    j = get_json(name)
    j['crate']['pkgname'] = pkgname
    pkg = get_pkgbuild(j)
    sys.stdout.write(pkg)


if __name__ == '__main__':
    main()