Write files

- create spec and service files
- other miscellaneous improvements

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

opam2rpm.py

@@ -18,21 +18,37 @@ import requests
 from bs4 import BeautifulSoup
 import re
 import jinja2
+import os
 import sys
+from contextlib import contextmanager
+import subprocess
+from time import sleep
 
 argparser = ArgumentParser()
 argparser.add_argument('--debug', help='Print verbose output', action='store_const', dest='loglevel', const=logging.DEBUG, default=logging.INFO)
 argparser.add_argument('--package', help='Name of the OPAM package', required=True)
-argparser.add_argument('--prefixed', help='Create package with "ocaml-" prefix', action='store_true', default=True)
+argparser.add_argument('--prefixed', help='Create RPM package with "ocaml-" prefix', action='store_true', default=True)
 argparser.add_argument('--opam-web', help='URL pointing to the OPAM web interface', default='https://opam.ocaml.org/')
+argparser.add_argument('--obs-project-dir', help='Path to a local checkout of the desired target project')
 
 args = argparser.parse_args()
 downstream_prefixed = args.prefixed
+mydir = os.path.dirname(os.path.realpath(sys.argv[0]))
 
 def _fail(msg):
     log.error(msg)
     sys.exit(1)
 
+# https://gist.github.com/howardhamilton/537e13179489d6896dd3
+@contextmanager
+def pushd(new_dir):
+    old_dir = os.getcwd()
+    os.chdir(new_dir)
+    try:
+        yield
+    finally:
+        os.chdir(old_dir)
+
 def query_opam(package):
     url = f'{args.opam_web}/packages/{package}'
     result = requests.get(url)
@@ -99,31 +115,80 @@ def parse_dependencies(dependencies):
     log.debug(f'Constructed OCAML build dependencies: {buildrequires}')
     return buildrequires
 
-def render(name, url, license, buildrequires, prefixed, vcs_url=None):
+def manglesrcname(name):
+    if name.startswith('ocaml-') and prefixed: # where is "prefixed" defined ?
+        return name.lstrip('ocaml-')
+    else:
+        return name
+
+def manglepkgname(srcname, add_prefix):
+    if add_prefix:
+        pkgname = f'ocaml-{srcname}'
+    else:
+        pkgname = srcname
+    return pkgname
+
+def render(name, srcname, url, license, buildrequires, prefixed, vcs_url=None):
     if not vcs_url:
         vcs_url = url
-    templenv = jinja2.Environment(loader=jinja2.FileSystemLoader(searchpath='/home/georg/Work/templates'))
+    templenv = jinja2.Environment(loader=jinja2.FileSystemLoader(searchpath=f'{mydir}/templates'))
     template_service = templenv.get_template('service')
     template_spec = templenv.get_template('ultimate.spec')
     log.debug(f'Rendering {template_spec}')
-    #if downstream_prefixing:
-    #    name = f'ocaml-{name}'
     rendered_service = template_service.render(pkgname=name, url=vcs_url)
-    if name.startswith('ocaml-') and prefixed:
-        name = name.lstrip('ocaml-')
-    rendered_spec = template_spec.render(pkgname=name, url=url, buildrequires=buildrequires, license=license, mode='dune', do_prefix=prefixed)
+    rendered_spec = template_spec.render(pkgname=srcname, url=url, buildrequires=buildrequires, license=license, mode='dune', do_prefix=prefixed)
 
     log.debug(f'Service: {rendered_service}')
     log.debug(f'Spec: {rendered_spec}')
     return rendered_service, rendered_spec
 
+def mkpac(pkgdir):
+    if os.path.isdir(pkgdir):
+        log.warning(f'Package directory {pkgdir} already exists')
+    else:
+        subprocess.run(['osc', 'mkpac', pkgdir], check=True)
+
+def mkfile(file, data):
+    if os.path.isfile(file):
+        log.warning(f'File {file} already exists, overwriting in 10 seconds ...')
+        sleep(10)
+    with open(file, 'w') as fh:
+        fh.write(data)
+
+def spec_cleaner(file):
+    subprocess.run(['spec-cleaner', '-i', file], check=True)
+
+    # spec-cleaner thinks "Development/Languages/OCaml" is an invalid group
+    with open(file, 'r') as fh:
+        lines = fh.readlines()
+    with open(file, 'w') as fh:
+        for line in lines:
+            if not 'FIXME' in line:
+                fh.write(line)
+
 def main():
     opam_package = parse_opam(query_opam(args.package))
     info = opam_package.get_info()
-    repository_url, repository_name, is_prefixed = parse_homepage(info['Homepage'])
+    repository_url, name, is_prefixed = parse_homepage(info['Homepage'])
     add_prefix = evaluate_prefixing(is_prefixed)
     dependencies = parse_dependencies(info['Dependencies'])
-    render(repository_name, info['Homepage'], info['License'], dependencies, add_prefix, repository_url)
+    srcname = manglesrcname(name)
+    pkgname = manglepkgname(name, add_prefix)
+    data_service, data_spec = render(name, srcname, info['Homepage'], info['License'], dependencies, add_prefix, repository_url)
+    prjdir = args.obs_project_dir
+    if prjdir:
+        if not os.path.isfile(f'{prjdir}/.osc/_project'):
+            _fail(f'Invalid project directory: {prjdir}')
+        specfile = f'{pkgname}.spec'
+        with pushd(prjdir):
+            mkpac(pkgname)
+            with pushd(pkgname):
+                mkfile('_service', data_service)
+                mkfile(specfile, data_spec)
+                spec_cleaner(specfile)
+    else:
+        log.warning('Will not create package, --obs-project-dir was not declared')
+
 
 logging.basicConfig(format='%(asctime)s %(levelname)s - %(funcName)s: %(message)s', datefmt='%H:%M:%S')
 log = logging.getLogger(__name__)