From 219e0a074702900f9c954f462ecace9b3a5c7149 Mon Sep 17 00:00:00 2001
From: Benjamin Drung <bdrung@ubuntu.com>
Date: Thu, 17 Dec 2009 11:56:30 +0100
Subject:   - Move compare_versions from moz-version into separate module     -
 add src/moz_version.py     - update src/moz-version     - update
 src/dh_xul-ext

---
 src/moz_version.py | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 src/moz_version.py

(limited to 'src/moz_version.py')

diff --git a/src/moz_version.py b/src/moz_version.py
new file mode 100644
index 0000000..832d65f
--- /dev/null
+++ b/src/moz_version.py
@@ -0,0 +1,140 @@
+# Copyright (c) 2009 Benjamin Drung <bdrung@ubuntu.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+# Reference: https://developer.mozilla.org/en/Toolkit_version_format
+
+import sys
+
+def decode_part(part):
+	"""Decodes a version part (like 5pre4) to <number-a><string-b><number-c><string-d>"""
+	subpart = [0,"",0,""]
+
+	# Split <number-a>
+	length = 0
+	for i in xrange(len(part)):
+		if part[i].isdigit() or part[i] in ("-"):
+			length += 1
+		else:
+			break
+	if length > 0:
+		subpart[0] = int(part[0:length])
+	part = part[length:]
+
+	# Split <string-b>
+	length = 0
+	for i in xrange(len(part)):
+		if not (part[i].isdigit() or part[i] in ("-")):
+			length += 1
+		else:
+			break
+	subpart[1] = part[0:length]
+	part = part[length:]
+
+	# Split <number-c>
+	length = 0
+	for i in xrange(len(part)):
+		if part[i].isdigit() or part[i] in ("-"):
+			length += 1
+		else:
+			break
+	if length > 0:
+		subpart[2] = int(part[0:length])
+	subpart[3] = part[length:]
+
+	# if string-b is a plus sign, number-a is incremented to be compatible with
+	# the Firefox 1.0.x version format: 1.0+ is the same as 1.1pre
+	if subpart[1] == "+":
+		subpart[0] += 1
+		subpart[1] = "pre"
+
+	# if the version part is a single asterisk, it is interpreted as an
+	# infinitely-large number: 1.5.0.* is the same as 1.5.0.(infinity)
+	if subpart[1] == "*":
+		subpart[0] = sys.maxint
+		subpart[1] = ""
+
+	return subpart
+
+def decode_version(version, verbose=False):
+	"""Decodes a version string like 1.1pre1a"""
+	parts = version.split(".")
+	decoded_parts = map(decode_part, parts)
+	if verbose:
+		print "I: Split %s up into %s." % (version, decoded_parts)
+	return decoded_parts
+
+def compare_subpart((a, b)):
+	# A string-part that exists is always less-then a nonexisting string-part
+	if a == "":
+		if b == "":
+			return 0
+		else:
+			return 1
+	elif b == "":
+		if a == "":
+			return 0
+		else:
+			return -1
+	else:
+		return cmp(a, b)
+
+def compare_part((x, y)):
+	compared_subparts = filter(lambda x: x != 0, map(compare_subpart, zip(x, y)))
+	if compared_subparts:
+		return compared_subparts[0]
+	else:
+		return 0
+
+def compare_versions(version1, version2, verbose=False):
+	a = decode_version(version1, verbose)
+	b = decode_version(version2, verbose)
+
+	if len(a) < len(b):
+		a.extend((len(b) - len(a)) * [[0,"",0,""]])
+	if len(b) < len(a):
+		b.extend((len(a) - len(b)) * [[0,"",0,""]])
+
+	result = filter(lambda x: x != 0, map(compare_part, zip(a, b)))
+	if result:
+		return result[0]
+	else:
+		return 0
+
+def extract_upstream_version(debian_version):
+	# remove last part separated by a dash (1.0-2 -> 1.0)
+	parts = debian_version.split('-')
+	if len(parts) > 1:
+		del parts[-1]
+	upstream_version = '-'.join(parts)
+
+	# compatibility: strip +nobinonly and +build
+	parts = upstream_version.split('+')
+	if len(parts) > 1 and parts[-1] == "nobinonly":
+		del parts[-1]
+	if len(parts) > 1 and parts[-1].startswith("build"):
+		del parts[-1]
+	upstream_version = '+'.join(parts)
+
+	return upstream_version
+
+def convert_debian_to_moz_version(debian_version, verbose=False):
+	upstream_version = extract_upstream_version(debian_version)
+	moz_version = upstream_version.replace("~", "")
+	return moz_version
-- 
cgit v1.2.3