# HG changeset patch
# User Peter Sanchez <peter@netlandish.com>
# Date 1650414735 21600
#      Tue Apr 19 18:32:15 2022 -0600
# Node ID 3e2ab3d9243cea9aaca29405c503ac23c0ce68e2
# Parent  ccae5bbb72cc1a4f3b36057508ee2d447efb4aa5
Adding hgsemver script

diff --git a/bin/hgsemver b/bin/hgsemver
new file mode 100755
--- /dev/null
+++ b/bin/hgsemver
@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+import os
+import subprocess
+import sys
+
+if len(sys.argv) != 2:
+    print("Usage: {0} [patch|minor|major|<new version>]".format(sys.argv[0]))
+    sys.exit(1)
+
+if (
+    subprocess.run(["hg", "branch"], stdout=subprocess.PIPE)
+    .stdout.decode()
+    .strip()
+    != "stable"
+):
+    print("Exiting! Not on the stable branch.")
+    sys.exit(1)
+
+subprocess.run(["hg", "pull", "--rebase"])
+p = subprocess.run(
+    [
+        "hg",
+        "log",
+        "-r",
+        ".",
+        "-T",
+        "{latesttag}{sub('^-0-.*', '', '-{latesttagdistance}-m{node|short}')}",
+    ],
+    stdout=subprocess.PIPE,
+)
+describe = p.stdout.decode().strip()
+old_version = describe.split("-")[0].split(".")
+if len(old_version) == 2:
+    [major, minor] = old_version
+    [major, minor] = map(int, [major, minor])
+    patch = 0
+else:
+    [major, minor, patch] = old_version
+    [major, minor, patch] = map(int, [major, minor, patch])
+
+p = subprocess.run(
+    [
+        "hg",
+        "log",
+        "--no-merges",
+        "-T",
+        "{node|short} {desc|firstline}\n",
+        "-r",
+        f"{'.'.join(old_version)}:.",
+    ],
+    stdout=subprocess.PIPE,
+)
+shortlog = p.stdout.decode()
+
+new_version = None
+
+if sys.argv[1] == "patch":
+    patch += 1
+elif sys.argv[1] == "minor":
+    minor += 1
+    patch = 0
+elif sys.argv[1] == "major":
+    major += 1
+    minor = patch = 0
+else:
+    new_version = sys.argv[1]
+
+if new_version is None:
+    if len(old_version) == 2 and patch == 0:
+        new_version = f"{major}.{minor}"
+    else:
+        new_version = f"{major}.{minor}.{patch}"
+
+p = None
+if os.path.exists("contrib/_incr_version"):
+    p = subprocess.run(["contrib/_incr_version", describe, new_version])
+elif os.path.exists(".hg/_incr_version"):
+    print("Warning: _incr_version found at legacy path")
+    p = subprocess.run([".hg/_incr_version", describe, new_version])
+else:
+    print(
+        "Warning: no _incr_version script. "
+        + "Does this project have any specific release requirements?"
+    )
+
+if p and p.returncode != 0:
+    print("Error: _incr_version returned nonzero exit code")
+    sys.exit(1)
+
+basename = os.path.basename(os.getcwd())
+message = f"{basename} {new_version}\n\n{shortlog}"
+subprocess.run(["hg", "tag", "-e", "-m", f"{message}", new_version])
+print(new_version)