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#!/usr/bin/python
# 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.
import getopt
import os
import sys
from moz_version import (compare_versions, convert_debian_to_moz_version,
convert_moz_to_debian_version)
# error codes
COMMAND_LINE_SYNTAX_ERROR = 2
INVALID_COMPARATOR = 3
EMPTY_VERSION_STRING = 4
COMPARATORS = ("lt", "le", "eq", "ne", "ge", "gt")
def moz_version_compare(version1, comparator, version2, silent=False,
verbose=False):
"""Return true if the expression version1 comparator version2 is valid,
otherwise false"""
if comparator not in COMPARATORS:
if not silent:
print >> sys.stderr, "E: The comparator " + comparator + \
" is not valid. It should one of " + \
", ".join(COMPARATORS) + "."
sys.exit(INVALID_COMPARATOR)
if version1.strip() == "" or version2.strip() == "":
if not silent:
print >> sys.stderr, "E: At least one version string is empty."
sys.exit(EMPTY_VERSION_STRING)
if verbose:
symbol = {"lt": "<", "le": "<=", "eq": "=", "ne": "!=",
"ge": ">=", "gt": ">"}
print "I: Comparing %s %s %s." % \
(version1, symbol[comparator], version2)
if comparator == "lt":
return compare_versions(version1, version2, verbose) < 0
elif comparator == "le":
return compare_versions(version1, version2, verbose) <= 0
elif comparator == "eq":
return compare_versions(version1, version2, verbose) == 0
elif comparator == "ne":
return compare_versions(version1, version2, verbose) != 0
elif comparator == "ge":
return compare_versions(version1, version2, verbose) >= 0
elif comparator == "gt":
return compare_versions(version1, version2, verbose) > 0
def usage(output):
name = os.path.basename(sys.argv[0])
print >> output, """Usage: %s [options] action
Actions:
-c, --compare version1 comparator version2
compare both Mozilla version numbers
comparator must be one of %s
-d, --to-deb version converts Mozilla into a Debian upstream version
-m, --to-moz version converts Debian into a Mozilla version
Options:
-h, --help display this help and exit
-s, --silent do not print anything and die silent on errors
-v, --verbose print more information
See %s(1) for more info.""" % (name, ", ".join(COMPARATORS), name)
def main():
try:
long_opts = ["compare", "help", "silent", "to-deb", "to-moz", "verbose"]
opts, args = getopt.gnu_getopt(sys.argv[1:], "cdhmsv", long_opts)
except getopt.GetoptError, e:
# print help information and exit:
print >> sys.stderr, str(e)
usage(sys.stderr)
sys.exit(COMMAND_LINE_SYNTAX_ERROR)
actions = set()
silent = False
verbose = False
for o, _ in opts:
if o in ("-c", "--compare"):
actions.add("compare")
elif o in ("-d", "--to-deb"):
actions.add("to-deb")
elif o in ("-h", "--help"):
usage(sys.stdout)
sys.exit()
elif o in ("-m", "--to-moz"):
actions.add("to-moz")
elif o in ("-s", "--silent"):
silent = True
elif o in ("-v", "--verbose"):
verbose = True
else:
assert False, "unhandled option"
if len(actions) != 1:
if not silent:
print >> sys.stderr, "E: You must specify an action."
usage(sys.stderr)
sys.exit(COMMAND_LINE_SYNTAX_ERROR)
action = actions.pop()
if action == "compare":
if len(args) != 3:
if not silent:
usage(sys.stderr)
sys.exit(COMMAND_LINE_SYNTAX_ERROR)
if moz_version_compare(args[0], args[1], args[2], silent, verbose):
if verbose:
print "I: Compare expression true."
sys.exit(0)
else:
if verbose:
print "I: Compare expression false."
sys.exit(1)
elif action == "to-deb":
if len(args) != 1:
if not silent:
print >> sys.stderr, "E: The action --to-deb takes exactly " + \
"one argument."
sys.exit(COMMAND_LINE_SYNTAX_ERROR)
print convert_moz_to_debian_version(args[0], 0, verbose)
elif action == "to-moz":
if len(args) != 1:
if not silent:
print >> sys.stderr, "E: The action --to-moz takes exactly " + \
"one argument."
sys.exit(COMMAND_LINE_SYNTAX_ERROR)
print convert_debian_to_moz_version(args[0], verbose)
if __name__ == "__main__":
main()
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