Implement cht.sh release script

Author: vladimyr

bin/release.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+from datetime import datetime
+import os
+from os import path
+import re
+import shutil
+import subprocess
+from subprocess import Popen
+import sys
+
+SHARE_DIR = path.join(path.dirname(__file__), "../share/")
+
+
+def run(args):
+    return Popen(args, stdout=sys.stdout, stderr=sys.stderr).wait()
+
+
+status = subprocess.check_output(["git", "status", "--porcelain"])
+if len(status) > 0:
+    print("Unclean working tree. Commit or stash changes first.", file=sys.stderr)
+    sys.exit(1)
+
+timestamp = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S +0000")
+
+cht_curr = path.join(SHARE_DIR, "cht.sh.txt")
+cht_new = path.join(SHARE_DIR, "cht.sh.txt.new")
+
+re_version = re.compile(r"^__CHTSH_VERSION=(.*)$")
+re_timestamp = re.compile(r"^__CHTSH_DATETIME=.*$")
+
+with open(cht_curr, "rt") as fin:
+    with open(cht_new, "wt") as fout:
+        for line in fin:
+            match = re_version.match(line)
+            if match:
+                version = int(match.group(1)) + 1
+                fout.write("__CHTSH_VERSION=%s\n" % version)
+                continue
+
+            match = re_timestamp.match(line)
+            if match:
+                fout.write('__CHTSH_DATETIME="%s"\n' % timestamp)
+                continue
+
+            fout.write(line)
+
+shutil.copymode(cht_curr, cht_new)
+os.remove(cht_curr)
+os.rename(cht_new, cht_curr)
+
+message = "cht: v%s" % version
+run(["git", "add", cht_curr])
+run(["git", "commit", "-m", message])
+run(["git", "tag", "cht@%s" % version, "-m", message])