1 files changed, 109 insertions, 0 deletions
diff --git a/scripts/obs/lib/git.py b/scripts/obs/lib/git.py
new file mode 100644
index 0000000..67f1d5e
--- /dev/null
+++ b/scripts/obs/lib/git.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2022 sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+import os
+import re
+import lib.config
+
+
+def get_repo_path(project):
+    return f"{lib.config.path_cache}/{os.path.basename(project)}"
+
+
+def get_repo_url(project):
+    if project in lib.config.git_url_other:
+        return lib.config.git_url_other[project]
+    return f"{lib.config.git_url_default}/{project}"
+
+
+def get_latest_tag_pattern(project):
+    if project in lib.config.git_latest_tag_pattern_other:
+        return lib.config.git_latest_tag_pattern_other[project]
+    return lib.config.git_latest_tag_pattern_default
+
+
+def clone(project, fetch=False):
+    repo_path = get_repo_path(project)
+    url = get_repo_url(project)
+
+    if os.path.exists(repo_path):
+        if fetch:
+            print(f"{project}: cloning {url} (cached, fetching)")
+            lib.run_cmd(["git", "fetch"], cwd=repo_path)
+        else:
+            print(f"{project}: cloning {url} (cached, not fetching)")
+        return
+
+    print(f"{project}: cloning {url}")
+    os.makedirs(lib.config.path_cache, exist_ok=True)
+    lib.run_cmd(["git", "clone", url, repo_path])
+
+    lib.run_cmd(["git", "config", "user.name", "Osmocom OBS scripts"],
+                cwd=repo_path)
+    lib.run_cmd(["git", "config", "user.email", "info@osmocom.org"],
+                cwd=repo_path)
+
+
+def clean(project):
+    repo_path = get_repo_path(project)
+    lib.run_cmd(["git", "clean", "-ffxd"], cwd=repo_path)
+
+
+def checkout(project, branch):
+    repo_path = get_repo_path(project)
+    print(f"{project}: checking out {branch}")
+    lib.run_cmd(["git", "checkout", "-f", branch], cwd=repo_path)
+    lib.run_cmd(["git", "reset", "--hard", branch], cwd=repo_path)
+
+
+def checkout_default_branch(project):
+    branch = lib.config.git_branch_default
+    if project in lib.config.git_branch_other:
+        branch = lib.config.git_branch_other[project]
+
+    checkout(project, f"origin/{branch}")
+
+
+def get_latest_tag(project):
+    pattern_str = get_latest_tag_pattern(project)
+    pattern = re.compile(pattern_str)
+    repo_path = get_repo_path(project)
+
+    git_tag_ret = lib.run_cmd(["git", "tag", "-l", "--sort=-v:refname"],
+                              cwd=repo_path)
+
+    for line in git_tag_ret.output.split('\n'):
+        line = line.strip('\r')
+        if pattern.match(line):
+            return line
+
+    lib.exit_error_cmd(git_tag_ret, f"couldn't find latest tag for {project},"
+                       f" regex used on output: {pattern_str}")
+
+
+def get_latest_tag_remote(project):
+    pattern_str = get_latest_tag_pattern(project)
+    pattern = re.compile(pattern_str)
+
+    print(f"{project}: getting latest tag from git remote")
+    ls_remote = lib.run_cmd(["git", "ls-remote", "--tags", "--sort=-v:refname",
+                             get_repo_url(project)])
+    for line in ls_remote.output.split('\n'):
+        # Tags are listed twice, skip the ones with ^{} at the end
+        if "^{}" in line:
+            continue
+
+        if "refs/tags/" not in line:
+            continue
+
+        line = line.rstrip().split("refs/tags/")[1]
+        if pattern.match(line):
+            return line
+
+    # No tag found probably means the repository was just created and doesn't
+    # have a release tag yet
+    return None
+
+
+def checkout_latest_tag(project):
+    checkout(project, get_latest_tag(project))