File: moz-version

package info (click to toggle)
mozilla-devscripts 0.39
  • links: PTS, VCS
  • area: main
  • in suites: jessie-kfreebsd
  • size: 364 kB
  • sloc: python: 1,054; sh: 106; perl: 35; makefile: 31
file content (155 lines) | stat: -rwxr-xr-x 5,597 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
#!/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])

if __name__ == "__main__":
    main()