Move RPM, Koji code into misc module

Signed-off-by: Nils Philippsen <nils@redhat.com>

rpmautospec/misc.py

@@ -0,0 +1,60 @@
+from functools import cmp_to_key
+import re
+from typing import List, Optional, Tuple
+
+import koji
+import rpm
+
+
+release_re = re.compile(r"^(?P<pkgrel>\d+)(?:(?P<middle>.*?)(?:\.(?P<minorbump>\d+))?)?$")
+disttag_re = re.compile(r"^\.?(?P<distcode>[^\d\.]+)(?P<distver>\d+)")
+evr_re = re.compile(r"^(?:(?P<epoch>\d+):)?(?P<version>[^-:]+)(?:-(?P<release>[^-:]+))?$")
+
+rpmvercmp_key = cmp_to_key(
+    lambda b1, b2: rpm.labelCompare(
+        (str(b1["epoch"]), b1["version"], b1["release"]),
+        (str(b2["epoch"]), b2["version"], b2["release"]),
+    )
+)
+
+_kojiclient = None
+
+
+def parse_evr(evr_str: str) -> Tuple[int, str, str]:
+    match = evr_re.match(evr_str)
+
+    if not match:
+        raise ValueError(str)
+
+    epoch = match.group("epoch") or 0
+    epoch = int(epoch)
+
+    return epoch, match.group("version"), match.group("release")
+
+
+def parse_release_tag(tag: str) -> Tuple[Optional[int], Optional[str], Optional[str]]:
+    pkgrel = middle = minorbump = None
+    match = release_re.match(tag)
+    if match:
+        pkgrel = int(match.group("pkgrel"))
+        middle = match.group("middle")
+        try:
+            minorbump = int(match.group("minorbump"))
+        except TypeError:
+            pass
+    return pkgrel, middle, minorbump
+
+
+def koji_init(koji_url: str):
+    global _kojiclient
+    _kojiclient = koji.ClientSession(koji_url)
+
+
+def get_package_builds(pkgname: str) -> List[dict]:
+    assert _kojiclient
+
+    pkgid = _kojiclient.getPackageID(pkgname)
+    if not pkgid:
+        raise ValueError(f"Package {pkgname!r} not found!")
+
+    return _kojiclient.listBuilds(pkgid, type="rpm", queryOpts={"order": "-nvr"})