~xnox/ubuntu-archive-tools/sru-report-autopkgtest-vomit : contents of nbs-report at revision 918

~xnox/ubuntu-archive-tools/sru-report-autopkgtest-vomit : (revision 918)

#!/usr/bin/python

# Copyright (C) 2011, 2012  Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Generate a HTML report of current NBS binary packages from a checkrdepends
# output directory

from __future__ import print_function

from collections import defaultdict
import csv
from optparse import OptionParser
import os
import sys
import time

from charts import make_chart, make_chart_header


def parse_checkrdepends_file(path, pkgmap):
    '''Parse one checkrdepends file into the NBS map'''

    cur_component = None
    cur_arch = None

    with open(path) as f:
        for line in f:
            if line.startswith('-- '):
                (cur_component, cur_arch) = line.split('/', 1)[1].split()[:2]
                continue
            assert cur_component
            assert cur_arch

            rdep = line.strip().split()[0]
            pkgmap.setdefault(rdep, (cur_component, []))[1].append(cur_arch)


def _pkg_removable(pkg, nbs, checked_v):
    '''Recursively check if pakcage is removable.

    checked_v is the working set of already checked vertices, to avoid infinite
    loops.
    '''
    checked_v.add(pkg)
    for rdep in nbs.get(pkg, []):
        if rdep in checked_v:
            continue
        #checked_v.add(rdep)
        if not rdep in nbs:
            try:
                checked_v.remove(rdep)
            except KeyError:
                pass
            return False
        if not _pkg_removable(rdep, nbs, checked_v):
            try:
                checked_v.remove(rdep)
            except KeyError:
                pass
            return False
    return True


def get_removables(nbs):
    '''Get set of removable packages.

    This includes packages with no rdepends and disconnected subgraphs, i. e.
    clusters of NBS packages which only depend on each other.
    '''
    removable = set()

    for p in nbs:
        if p in removable:
            continue
        checked_v = set()
        if _pkg_removable(p, nbs, checked_v):
            # we can add the entire cluster here, not just p; avoids
            # re-checking the other vertices in that cluster
            removable.update(checked_v)

    return removable


def html_report(options, nbs, removables):
    '''Generate HTML report from NBS map.'''

    print('''\
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>NBS packages</title>
  <style type="text/css">
    body { background: #CCCCB0; color: black; }
    a { text-decoration: none; }
    table { border-collapse: collapse; border-style: none none;
            margin-bottom: 3ex; empty-cells: show; }
    table th { text-align: left; border-style: solid none none none;
               border-width: 3px; padding-right: 10px; }
    table td { vertical-align:top; text-align: left; border-style: dotted none;
               border-width: 1px; padding-right: 10px; }
    .normal { }
    .removable { color: green; font-weight: bold; }
    .nbs { color: blue; }
    .componentsup { font-size: 70%%; color: red; font-weight: bold; }
    .componentunsup { font-size: 70%%; color: darkred; }
  </style>
  %s
</head>
<body>
<h1>NBS: Binary packages not built from any source</h1>

<h2>Archive Administrator commands</h2>
<p>Run this command to remove NBS packages which are not required any more:</p>
''' % make_chart_header())

    print('<p style="font-family: monospace">remove-package -m NBS '
          '-d %s -s %s -b -y %s</p>' %
          (options.distribution, options.suite, ' '.join(sorted(removables))))

    print('''
<h2>Reverse dependencies</h2>

<p><span class="nbs">Reverse dependencies which are NBS themselves</span><br/>
<span class="removable">NBS package which can be removed safely</span></p>
<table>
''')
    reverse_nbs = defaultdict(list)  # non_nbs_pkg -> [nbspkg1, ...]
    pkg_component = {}  # non_nbs_pkg -> (component, component_class)

    for pkg in sorted(nbs):
        nbsmap = nbs[pkg]
        if pkg in removables:
            cls = 'removable'
        else:
            cls = 'normal'
        print('<tr><th colspan="4"><span class="%s">%s</span></td></tr>' %
              (cls, pkg), end="")
        for rdep in sorted(nbsmap):
            (component, arches) = nbsmap[rdep]

            if component in ('main', 'restricted'):
                component_cls = 'sup'
            else:
                component_cls = 'unsup'

            if rdep in nbs:
                if rdep in removables:
                    cls = 'removable'
                else:
                    cls = 'nbs'
            else:
                cls = 'normal'
                reverse_nbs[rdep].append(pkg)
                pkg_component[rdep] = (component, component_cls)

            print('<tr><td>&nbsp; &nbsp; </td>', end='')
            print('<td><span class="%s">%s</span></td> ' % (cls, rdep), end='')
            print('<td><span class="component%s">%s</span></td>' %
                  (component_cls, component), end='')
            print('<td>%s</td></tr>' % ' '.join(arches))

    print('''</table>
<h2>Packages which depend on NBS packages</h2>
<table>''')

    def sort_rev_nbs(k1, k2):
        len_cmp = cmp(len(reverse_nbs[k1]), len(reverse_nbs[k2]))
        if len_cmp == 0:
            return cmp(k1, k2)
        else:
            return -len_cmp

    for pkg in sorted(reverse_nbs, cmp=sort_rev_nbs):
        print('<tr><td>%s</td> '
              '<td><span class="component%s">%s</span></td><td>' % (
                  pkg, pkg_component[pkg][1], pkg_component[pkg][0]), end="")
        print(" ".join(sorted(reverse_nbs[pkg])), end="")
        print('</td></tr>')

    print('</table>')

    print("<h2>Over time</h2>")
    print(make_chart("nbs.csv", ["removable", "total"]))

    print('<p><small>Generated at %s.</small></p>' %
          time.strftime('%Y-%m-%d %H:%M:%S %Z', time.gmtime(options.time)))
    print('</body></html>')


def main():
    parser = OptionParser(
        usage="%prog <checkrdepends output directory>",
        description="Generate an HTML report of current NBS binary packages.")
    parser.add_option('-d', '--distribution', default='ubuntu')
    parser.add_option('-s', '--suite', default='vivid')
    parser.add_option(
        '--csv-file', help='record CSV time series data in this file')
    options, args = parser.parse_args()
    if len(args) != 1:
        parser.error("need a checkrdepends output directory")

    options.time = time.time()

    # pkg -> rdep_pkg -> (component, [arch1, arch2, ...])
    nbs = defaultdict(dict)

    for f in os.listdir(args[0]):
        if f.startswith('.') or f.endswith('.html'):
            continue
        parse_checkrdepends_file(os.path.join(args[0], f), nbs[f])

    #with open('/tmp/dot', 'w') as dot:
    #    print('digraph {', file=dot)
    #    print('   ratio 0.1', file=dot)
    #    pkgnames = set(nbs)
    #    for m in nbs.itervalues():
    #        pkgnames.update(m)
    #    for n in pkgnames:
    #        print('  %s [label="%s"' % (n.replace('-', '').replace('.', ''), n),
    #              end="", file=dot)
    #        if n in nbs:
    #            print(', style="filled", fillcolor="lightblue"', end="", file=dot)
    #        print(']', file=dot)
    #    print(file=dot)
    #    for pkg, map in nbs.iteritems():
    #        for rd in map:
    #            print('  %s -> %s' % (
    #                    pkg.replace('-', '').replace('.', ''),
    #                    rd.replace('-', '').replace('.', '')), file=dot)
    #    print('}', file=dot)

    removables = get_removables(nbs)

    html_report(options, nbs, removables)

    if options.csv_file is not None:
        if sys.version < "3":
            open_mode = "ab"
            open_kwargs = {}
        else:
            open_mode = "a"
            open_kwargs = {"newline": ""}
        csv_is_new = not os.path.exists(options.csv_file)
        with open(options.csv_file, open_mode, **open_kwargs) as csv_file:
            # Field names deliberately hardcoded; any changes require
            # manually rewriting the output file.
            fieldnames = [
                "time",
                "removable",
                "total",
                ]
            csv_writer = csv.DictWriter(csv_file, fieldnames)
            if csv_is_new:
                csv_writer.writeheader()
            csv_writer.writerow({
                "time": int(options.time * 1000),
                "removable": len(removables),
                "total": len(nbs),
                })


if __name__ == '__main__':
    main()

198 by Martin Pitt add nbs-report	1	#!/usr/bin/python
355 by Colin Watson Apply GPLv3 to anything not already licensed; ok slangasek, broder, laney, kitterman, geser	2
	3	# Copyright (C) 2011, 2012 Canonical Ltd.
	4	# Author: Martin Pitt <martin.pitt@ubuntu.com>
	5
	6	# This program is free software: you can redistribute it and/or modify
	7	# it under the terms of the GNU General Public License as published by
	8	# the Free Software Foundation; version 3 of the License.
	9	#
	10	# This program is distributed in the hope that it will be useful,
	11	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	# GNU General Public License for more details.
	14	#
	15	# You should have received a copy of the GNU General Public License
	16	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	17
545 by Colin Watson Make all scripts pass pep8(1).	18	# Generate a HTML report of current NBS binary packages from a checkrdepends
545 by Colin Watson Make all scripts pass pep8(1).	19	# output directory
198 by Martin Pitt add nbs-report	20
359 by Colin Watson Use Python 3-style print functions.	21	from __future__ import print_function
359 by Colin Watson Use Python 3-style print functions.	22
555 by Colin Watson Simplify using collections.defaultdict.	23	from collections import defaultdict
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	24	import csv
847 by Colin Watson nbs-report: Convert option parsing to optparse.	25	from optparse import OptionParser
356 by Colin Watson PEP-8 import ordering	26	import os
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	27	import sys
356 by Colin Watson PEP-8 import ordering	28	import time
198 by Martin Pitt add nbs-report	29
849 by Colin Watson architecture-mismatches, component-mismatches, priority-mismatches, nbs-report: Use YUI to generate charts of progress over time.	30	from charts import make_chart, make_chart_header
	31
492 by Colin Watson sort imports	32
198 by Martin Pitt add nbs-report	33	def parse_checkrdepends_file(path, pkgmap):
	34	'''Parse one checkrdepends file into the NBS map'''
	35
	36	cur_component = None
	37	cur_arch = None
	38
427 by Colin Watson Use context managers in a few more places.	39	with open(path) as f:
	40	for line in f:
	41	if line.startswith('-- '):
	42	(cur_component, cur_arch) = line.split('/', 1)[1].split()[:2]
	43	continue
	44	assert cur_component
	45	assert cur_arch
198 by Martin Pitt add nbs-report	46
733 by Colin Watson nbs-report: tolerate extra words in checkrdepends output	47	rdep = line.strip().split()[0]
427 by Colin Watson Use context managers in a few more places.	48	pkgmap.setdefault(rdep, (cur_component, []))[1].append(cur_arch)
198 by Martin Pitt add nbs-report	49
545 by Colin Watson Make all scripts pass pep8(1).	50
205 by Martin Pitt nbs-report: Add detection of closed NBS subgraphs, to find out more packages which can be safely removed	51	def _pkg_removable(pkg, nbs, checked_v):
	52	'''Recursively check if pakcage is removable.
339 by Colin Watson remove trailing whitespace	53
205 by Martin Pitt nbs-report: Add detection of closed NBS subgraphs, to find out more packages which can be safely removed	54	checked_v is the working set of already checked vertices, to avoid infinite
	55	loops.
	56	'''
	57	checked_v.add(pkg)
	58	for rdep in nbs.get(pkg, []):
	59	if rdep in checked_v:
	60	continue
	61	#checked_v.add(rdep)
	62	if not rdep in nbs:
	63	try:
	64	checked_v.remove(rdep)
	65	except KeyError:
	66	pass
	67	return False
	68	if not _pkg_removable(rdep, nbs, checked_v):
	69	try:
	70	checked_v.remove(rdep)
	71	except KeyError:
	72	pass
	73	return False
	74	return True
	75
545 by Colin Watson Make all scripts pass pep8(1).	76
198 by Martin Pitt add nbs-report	77	def get_removables(nbs):
	78	'''Get set of removable packages.
	79
205 by Martin Pitt nbs-report: Add detection of closed NBS subgraphs, to find out more packages which can be safely removed	80	This includes packages with no rdepends and disconnected subgraphs, i. e.
	81	clusters of NBS packages which only depend on each other.
198 by Martin Pitt add nbs-report	82	'''
198 by Martin Pitt add nbs-report	83	removable = set()
205 by Martin Pitt nbs-report: Add detection of closed NBS subgraphs, to find out more packages which can be safely removed	84
198 by Martin Pitt add nbs-report	85	for p in nbs:
205 by Martin Pitt nbs-report: Add detection of closed NBS subgraphs, to find out more packages which can be safely removed	86	if p in removable:
	87	continue
	88	checked_v = set()
	89	if _pkg_removable(p, nbs, checked_v):
	90	# we can add the entire cluster here, not just p; avoids
	91	# re-checking the other vertices in that cluster
	92	removable.update(checked_v)
198 by Martin Pitt add nbs-report	93
	94	return removable
	95
545 by Colin Watson Make all scripts pass pep8(1).	96
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	97	def html_report(options, nbs, removables):
198 by Martin Pitt add nbs-report	98	'''Generate HTML report from NBS map.'''
198 by Martin Pitt add nbs-report	99
545 by Colin Watson Make all scripts pass pep8(1).	100	print('''\
	101	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
	102	"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
198 by Martin Pitt add nbs-report	103	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
	104	<head>
	105	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	106	<title>NBS packages</title>
	107	<style type="text/css">
	108	body { background: #CCCCB0; color: black; }
	109	a { text-decoration: none; }
339 by Colin Watson remove trailing whitespace	110	table { border-collapse: collapse; border-style: none none;
198 by Martin Pitt add nbs-report	111	margin-bottom: 3ex; empty-cells: show; }
339 by Colin Watson remove trailing whitespace	112	table th { text-align: left; border-style: solid none none none;
198 by Martin Pitt add nbs-report	113	border-width: 3px; padding-right: 10px; }
	114	table td { vertical-align:top; text-align: left; border-style: dotted none;
	115	border-width: 1px; padding-right: 10px; }
	116	.normal { }
	117	.removable { color: green; font-weight: bold; }
	118	.nbs { color: blue; }
850 by Colin Watson nbs-report: fix head generation	119	.componentsup { font-size: 70%%; color: red; font-weight: bold; }
850 by Colin Watson nbs-report: fix head generation	120	.componentunsup { font-size: 70%%; color: darkred; }
198 by Martin Pitt add nbs-report	121	</style>
849 by Colin Watson architecture-mismatches, component-mismatches, priority-mismatches, nbs-report: Use YUI to generate charts of progress over time.	122	%s
198 by Martin Pitt add nbs-report	123	</head>
	124	<body>
	125	<h1>NBS: Binary packages not built from any source</h1>
	126
	127	<h2>Archive Administrator commands</h2>
	128	<p>Run this command to remove NBS packages which are not required any more:</p>
849 by Colin Watson architecture-mismatches, component-mismatches, priority-mismatches, nbs-report: Use YUI to generate charts of progress over time.	129	''' % make_chart_header())
359 by Colin Watson Use Python 3-style print functions.	130
897 by Colin Watson Parameterise the NBS report so that it can be run for ubuntu-rtm too.	131	print('<p style="font-family: monospace">remove-package -m NBS '
	132	'-d %s -s %s -b -y %s</p>' %
	133	(options.distribution, options.suite, ' '.join(sorted(removables))))
359 by Colin Watson Use Python 3-style print functions.	134
359 by Colin Watson Use Python 3-style print functions.	135	print('''
198 by Martin Pitt add nbs-report	136	<h2>Reverse dependencies</h2>
339 by Colin Watson remove trailing whitespace	137
545 by Colin Watson Make all scripts pass pep8(1).	138	<p><span class="nbs">Reverse dependencies which are NBS themselves</span><br/>
339 by Colin Watson remove trailing whitespace	139	<span class="removable">NBS package which can be removed safely</span></p>
198 by Martin Pitt add nbs-report	140	<table>
359 by Colin Watson Use Python 3-style print functions.	141	''')
555 by Colin Watson Simplify using collections.defaultdict.	142	reverse_nbs = defaultdict(list) # non_nbs_pkg -> [nbspkg1, ...]
545 by Colin Watson Make all scripts pass pep8(1).	143	pkg_component = {} # non_nbs_pkg -> (component, component_class)
198 by Martin Pitt add nbs-report	144
	145	for pkg in sorted(nbs):
	146	nbsmap = nbs[pkg]
	147	if pkg in removables:
	148	cls = 'removable'
	149	else:
	150	cls = 'normal'
359 by Colin Watson Use Python 3-style print functions.	151	print('<tr><th colspan="4"><span class="%s">%s</span></td></tr>' %
359 by Colin Watson Use Python 3-style print functions.	152	(cls, pkg), end="")
198 by Martin Pitt add nbs-report	153	for rdep in sorted(nbsmap):
198 by Martin Pitt add nbs-report	154	(component, arches) = nbsmap[rdep]
202 by Martin Pitt nbs-report: add component to reverse dep list	155
	156	if component in ('main', 'restricted'):
	157	component_cls = 'sup'
	158	else:
	159	component_cls = 'unsup'
	160
198 by Martin Pitt add nbs-report	161	if rdep in nbs:
	162	if rdep in removables:
	163	cls = 'removable'
	164	else:
	165	cls = 'nbs'
	166	else:
	167	cls = 'normal'
555 by Colin Watson Simplify using collections.defaultdict.	168	reverse_nbs[rdep].append(pkg)
202 by Martin Pitt nbs-report: add component to reverse dep list	169	pkg_component[rdep] = (component, component_cls)
200 by Martin Pitt nbs-report: colorize components	170
545 by Colin Watson Make all scripts pass pep8(1).	171	print('<tr><td>    </td>', end='')
	172	print('<td><span class="%s">%s</span></td> ' % (cls, rdep), end='')
	173	print('<td><span class="component%s">%s</span></td>' %
	174	(component_cls, component), end='')
	175	print('<td>%s</td></tr>' % ' '.join(arches))
198 by Martin Pitt add nbs-report	176
359 by Colin Watson Use Python 3-style print functions.	177	print('''</table>
198 by Martin Pitt add nbs-report	178	<h2>Packages which depend on NBS packages</h2>
359 by Colin Watson Use Python 3-style print functions.	179	<table>''')
198 by Martin Pitt add nbs-report	180
	181	def sort_rev_nbs(k1, k2):
	182	len_cmp = cmp(len(reverse_nbs[k1]), len(reverse_nbs[k2]))
	183	if len_cmp == 0:
	184	return cmp(k1, k2)
	185	else:
	186	return -len_cmp
	187
	188	for pkg in sorted(reverse_nbs, cmp=sort_rev_nbs):
545 by Colin Watson Make all scripts pass pep8(1).	189	print('<tr><td>%s</td> '
545 by Colin Watson Make all scripts pass pep8(1).	190	'<td><span class="component%s">%s</span></td><td>' % (
677 by Colin Watson make all scripts pass current stricter pep8(1) in raring	191	pkg, pkg_component[pkg][1], pkg_component[pkg][0]), end="")
369 by Colin Watson fix a few incorrect uses of print(end="")	192	print(" ".join(sorted(reverse_nbs[pkg])), end="")
359 by Colin Watson Use Python 3-style print functions.	193	print('</td></tr>')
198 by Martin Pitt add nbs-report	194
359 by Colin Watson Use Python 3-style print functions.	195	print('</table>')
849 by Colin Watson architecture-mismatches, component-mismatches, priority-mismatches, nbs-report: Use YUI to generate charts of progress over time.	196
	197	print("<h2>Over time</h2>")
	198	print(make_chart("nbs.csv", ["removable", "total"]))
	199
359 by Colin Watson Use Python 3-style print functions.	200	print('<p><small>Generated at %s.</small></p>' %
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	201	time.strftime('%Y-%m-%d %H:%M:%S %Z', time.gmtime(options.time)))
359 by Colin Watson Use Python 3-style print functions.	202	print('</body></html>')
545 by Colin Watson Make all scripts pass pep8(1).	203
545 by Colin Watson Make all scripts pass pep8(1).	204
847 by Colin Watson nbs-report: Convert option parsing to optparse.	205	def main():
	206	parser = OptionParser(
	207	usage="%prog <checkrdepends output directory>",
	208	description="Generate an HTML report of current NBS binary packages.")
897 by Colin Watson Parameterise the NBS report so that it can be run for ubuntu-rtm too.	209	parser.add_option('-d', '--distribution', default='ubuntu')
911 by Colin Watson utopic → vivid	210	parser.add_option('-s', '--suite', default='vivid')
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	211	parser.add_option(
	212	'--csv-file', help='record CSV time series data in this file')
	213	options, args = parser.parse_args()
847 by Colin Watson nbs-report: Convert option parsing to optparse.	214	if len(args) != 1:
	215	parser.error("need a checkrdepends output directory")
	216
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	217	options.time = time.time()
	218
847 by Colin Watson nbs-report: Convert option parsing to optparse.	219	# pkg -> rdep_pkg -> (component, [arch1, arch2, ...])
	220	nbs = defaultdict(dict)
	221
	222	for f in os.listdir(args[0]):
	223	if f.startswith('.') or f.endswith('.html'):
	224	continue
	225	parse_checkrdepends_file(os.path.join(args[0], f), nbs[f])
	226
	227	#with open('/tmp/dot', 'w') as dot:
	228	# print('digraph {', file=dot)
	229	# print(' ratio 0.1', file=dot)
	230	# pkgnames = set(nbs)
	231	# for m in nbs.itervalues():
	232	# pkgnames.update(m)
	233	# for n in pkgnames:
	234	# print(' %s [label="%s"' % (n.replace('-', '').replace('.', ''), n),
	235	# end="", file=dot)
	236	# if n in nbs:
	237	# print(', style="filled", fillcolor="lightblue"', end="", file=dot)
	238	# print(']', file=dot)
	239	# print(file=dot)
	240	# for pkg, map in nbs.iteritems():
	241	# for rd in map:
	242	# print(' %s -> %s' % (
	243	# pkg.replace('-', '').replace('.', ''),
	244	# rd.replace('-', '').replace('.', '')), file=dot)
	245	# print('}', file=dot)
	246
	247	removables = get_removables(nbs)
	248
848 by Colin Watson nbs-report, cron.NBS: Record results as a CSV time series.	249	html_report(options, nbs, removables)
	250
	251	if options.csv_file is not None:
	252	if sys.version < "3":
	253	open_mode = "ab"
	254	open_kwargs = {}
	255	else:
	256	open_mode = "a"
	257	open_kwargs = {"newline": ""}
	258	csv_is_new = not os.path.exists(options.csv_file)
	259	with open(options.csv_file, open_mode, **open_kwargs) as csv_file:
	260	# Field names deliberately hardcoded; any changes require
	261	# manually rewriting the output file.
	262	fieldnames = [
	263	"time",
	264	"removable",
	265	"total",
	266	]
	267	csv_writer = csv.DictWriter(csv_file, fieldnames)
	268	if csv_is_new:
	269	csv_writer.writeheader()
	270	csv_writer.writerow({
	271	"time": int(options.time * 1000),
	272	"removable": len(removables),
	273	"total": len(nbs),
	274	})
847 by Colin Watson nbs-report: Convert option parsing to optparse.	275
	276
	277	if __name__ == '__main__':
	278	main()