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# Copyright (c) 2009-2011, Benjamin Drung <bdrung@debian.org>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 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] == "-":
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] == "-"):
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] == "-":
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)
# remove epoch
parts = upstream_version.split(':')
if len(parts) > 1:
del parts[0]
upstream_version = ':'.join(parts)
return upstream_version
def _convert_part_to_debian(part):
"""Converts a Mozilla version part (like 5pre4) to a Debian version."""
(number_a, string_b, number_c, string_d) = part
debian_version = ""
if string_d != "":
debian_version = "~" + string_d
if number_c != 0 or string_d != "":
debian_version = str(number_c) + debian_version
if string_b != "":
debian_version = "~" + string_b + debian_version
debian_version = str(number_a) + debian_version
return debian_version
def convert_debian_to_moz_version(debian_version):
upstream_version = extract_upstream_version(debian_version)
# 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)
moz_version = upstream_version.replace("~", "")
return moz_version
def convert_moz_to_debian_version(moz_version, epoch=0, verbose=False):
parts = decode_version(moz_version, verbose)
# tranform parts
parts = [_convert_part_to_debian(p) for p in parts]
debian_version = ".".join(parts)
if epoch != 0:
debian_version = str(epoch) + ":" + debian_version
return debian_version
def moz_to_next_debian_version(moz_version, epoch=0, verbose=False):
"""Convert a given Mozilla version to the next Debian version.
Compared to convert_moz_to_debian_version it does following:
* append 0 to a trailing letter, or
* append + to a trailing number, or
* replace a trailing * with +.
Examples:
9.0a => 9.0~a0
9.0a1 => 9.0~a1+
9.0 => 9.0+
9.0.* => 9.0.+
"""
parts = decode_version(moz_version, verbose)
# tranform last parts
(number_a, string_b, number_c, string_d) = parts[-1]
last_part = ""
if string_d != "":
last_part = "~" + string_d + "0"
if number_c != 0 or string_d != "":
if last_part:
last_part = str(number_c) + last_part
else:
if number_c == sys.maxint:
last_part = "+"
else:
last_part = str(number_c) + "+"
if string_b != "":
if last_part:
last_part = "~" + string_b + last_part
else:
last_part = "~" + string_b + "0"
if last_part:
last_part = str(number_a) + last_part
else:
if number_a == sys.maxint:
last_part = "+"
else:
last_part = str(number_a) + "+"
parts = [_convert_part_to_debian(p) for p in parts[:-1]] + [last_part]
debian_version = ".".join(parts)
if epoch != 0:
debian_version = str(epoch) + ":" + debian_version
return debian_version
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