From: Scott Worley <scottworley@scottworley.com>
Date: Fri, 29 May 2020 06:52:01 +0000 (-0700)
Subject: Factor out fetch_channel
X-Git-Tag: 1.3~3
X-Git-Url: http://git.scottworley.com/pinch/commitdiff_plain/10ddbaff0197f0ef93a910d7ea3f9f7d0ebac3a4?hp=8ce159d26ebefd19a7ac6ef8c0c64b460cfcf384

Factor out fetch_channel

Appeases pylint's "Too many branches"
---

diff --git a/pinch.py b/pinch.py
index f84440c..10481e4 100644
--- a/pinch.py
+++ b/pinch.py
@@ -497,6 +497,25 @@ def pin(args: argparse.Namespace) -> None:
         config.write(configfile)
 
 
+def fetch_channel(
+        v: Verification,
+        section: str,
+        conf: configparser.SectionProxy) -> str:
+    if 'git_repo' not in conf or 'release_name' not in conf:
+        raise Exception(
+            'Cannot update unpinned channel "%s" (Run "pin" before "update")' %
+            section)
+
+    if 'channel_url' in conf:
+        return fetch_with_nix_prefetch_url(
+            v, conf['tarball_url'], Digest16(
+                conf['tarball_sha256']))
+
+    channel = Channel(**dict(conf.items()))
+    ensure_git_rev_available(v, channel)
+    return git_get_tarball(v, channel)
+
+
 def update(args: argparse.Namespace) -> None:
     v = Verification()
     config = configparser.ConfigParser()
@@ -504,25 +523,10 @@ def update(args: argparse.Namespace) -> None:
     configs = [read_config(filename) for filename in args.channels_file]
     for config in configs:
         for section in config.sections():
-
             if 'alias_of' in config[section]:
                 assert 'git_repo' not in config[section]
                 continue
-
-            if 'git_repo' not in config[section] or 'release_name' not in config[section]:
-                raise Exception(
-                    'Cannot update unpinned channel "%s" (Run "pin" before "update")' %
-                    section)
-
-            if 'channel_url' in config[section]:
-                tarball = fetch_with_nix_prefetch_url(
-                    v, config[section]['tarball_url'], Digest16(
-                        config[section]['tarball_sha256']))
-            else:
-                channel = Channel(**dict(config[section].items()))
-                ensure_git_rev_available(v, channel)
-                tarball = git_get_tarball(v, channel)
-
+            tarball = fetch_channel(v, section, config[section])
             if section in exprs:
                 raise Exception('Duplicate channel "%s"' % section)
             exprs[section] = (