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#!/usr/bin/python
# Copyright (C) 2012, 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.
"""Validates a given Debian or Ubuntu distro-info CSV file."""
import csv
import datetime
import optparse
import os
import sys
_COLUMNS = {
"debian": ("version", "codename", "series", "created", "release", "eol"),
"ubuntu": ("version", "codename", "series", "created", "release", "eol",
"eol-server"),
}
_DATES = ("created", "release", "eol", "eol-server")
_EARLIER_DATES = (
("created", "release"),
("release", "eol"),
("eol", "eol-server"),
)
_STRINGS = {
"debian": ("codename", "series"),
"ubuntu": ("version", "codename", "series"),
}
def convert_date(string):
"""Convert a date string in ISO 8601 into a datetime object."""
if not string:
date = None
else:
parts = [int(x) for x in string.split("-")]
if len(parts) == 3:
(year, month, day) = parts
date = datetime.date(year, month, day)
else:
raise ValueError("Date not in ISO 8601 format.")
return date
def error(filename, line, message, *args):
"""Prints an error message"""
print >> sys.stderr, "%s:%i: %s." % (filename, line, message % args)
def validate(filename, distro):
"""Validates a given CSV file.
Returns True if the given CSV file is valid and otherwise False.
"""
failures = 0
content = open(filename).readlines()
# Remove comments
for line in xrange(len(content)):
if content[line].startswith("#"):
content[line] = "\n"
csvreader = csv.DictReader(content)
for row in csvreader:
# Check for missing columns
for column in _COLUMNS[distro]:
if not column in row:
msg = "Column `%s' is missing"
error(filename, csvreader.line_num, msg, column)
failures += 1
# Check for additinal columns
for column in row:
if not column in _COLUMNS[distro]:
msg = "Additional column `%s' is specified"
error(filename, csvreader.line_num, msg, column)
failures += 1
# Check required strings columns
for column in _STRINGS[distro]:
if column in row and not row[column]:
msg = "Empty column `%s' specified"
error(filename, csvreader.line_num, msg, column)
failures += 1
# Check dates
for column in _DATES:
if column in row:
try:
row[column] = convert_date(row[column])
except ValueError:
msg = "Invalid date `%s' in column `%s'"
error(filename, csvreader.line_num, msg, row[column],
column)
failures += 1
row[column] = None
# Check required date columns
column = "created"
if column in row and not row[column]:
msg = "No date specified in column `%s'"
error(filename, csvreader.line_num, msg, column)
failures += 1
# Compare dates
for (date1, date2) in _EARLIER_DATES:
if date2 in row and row[date2]:
if date1 in row and row[date1]:
# date1 needs to be earlier than date2
if row[date1] >= row[date2]:
msg = ("Date %s of column `%s' needs to be later "
"than %s of column `%s'")
error(filename, csvreader.line_num, msg,
row[date2].isoformat(), date2,
row[date1].isoformat(), date1)
failures += 1
else:
# date1 needs to be specified if date1 is specified
msg = ("A date needs to be specified in column `%s' due "
"to the given date in column `%s'")
error(filename, csvreader.line_num, msg, date1, date2)
failures += 1
return failures == 0
def main():
"""Main function with command line parameter parsing."""
script_name = os.path.basename(sys.argv[0])
usage = "%s -d|-u csv-file" % (script_name)
parser = optparse.OptionParser(usage=usage)
parser.add_option("-d", "--debian", dest="debian", action="store_true",
default=False, help="validate a Debian CSV file")
parser.add_option("-u", "--ubuntu", dest="ubuntu", action="store_true",
default=False, help="validate an Ubuntu CSV file")
(options, args) = parser.parse_args()
if len(args) == 0:
parser.error("No CSV file specified.")
elif len(args) > 1:
parser.error("Multiple CSV files specified: %s" % (", ".join(args)))
if len([x for x in [options.debian, options.ubuntu] if x]) != 1:
parser.error("You have to select exactly one of --debian, --ubuntu.")
if options.debian:
distro = "debian"
else:
distro = "ubuntu"
if validate(args[0], distro):
return 0
else:
return 1
if __name__ == "__main__":
sys.exit(main())
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