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Limnoria/sandbox/FreeBSD.py

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#!/usr/bin/env python
###
# Copyright (c) 2002, Jeremiah Fincher
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
"""
Provides FreeBSD ports searching and other FreeBSD-specific services.
"""
import plugins
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import time
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import string
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import getopt
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import os.path
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import urllib2
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import sqlite
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import conf
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import debug
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import ircutils
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import privmsgs
import callbacks
indexFile = 'INDEX'
indexUrl = 'ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-stable/INDEX'
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dbFile = os.path.join(conf.dataDir, 'FreeBSD.db')
def getIndex():
"""Returns a file-like object that is the Ports index."""
if os.path.exists(indexFile):
return file(indexFile, 'r')
else:
return urllib2.urlopen(indexUrl)
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def makeDb(dbfilename, indexfd, replace=False):
if os.path.exists(dbfilename):
if replace:
os.remove(dbfilename)
else:
indexfd.close()
return sqlite.connect(dbfilename)
db = sqlite.connect(dbfilename)
cursor = db.cursor()
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cursor.execute("""PRAGMA cache_size=20000""")
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cursor.execute("""CREATE TABLE ports (
id INTEGER PRIMARY KEY,
name TEXT UNIQUE ON CONFLICT IGNORE,
path TEXT,
info TEXT,
maintainer TEXT,
website TEXT
)""")
cursor.execute("""CREATE TABLE categories (
id INTEGER PRIMARY KEY,
name TEXT UNIQUE ON CONFLICT IGNORE
)""")
cursor.execute("""CREATE TABLE in_category (
port_id INTEGER,
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category_id INTEGER,
UNIQUE (port_id, category_id) ON CONFLICT IGNORE
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)""")
cursor.execute("""CREATE TABLE depends (
port_id INTEGER,
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depends_id INTEGER,
UNIQUE (port_id, depends_id) ON CONFLICT IGNORE
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)""")
lines = map(lambda s: s.rstrip().split('|'), indexfd)
for fields in lines:
# First, add all the entries to the ports table.
name = fields[0]
path = fields[1]
info = fields[3]
maintainer = fields[5]
category = fields[6]
website = fields[9]
cursor.execute("""INSERT INTO ports
VALUES (NULL, %s, %s, %s, %s, %s)""",
name, path, info, maintainer, website)
for category in category.split():
cursor.execute("INSERT INTO categories VALUES (NULL, %s)",category)
cursor.execute("""INSERT INTO in_category
SELECT ports.id, categories.id
FROM ports, categories
WHERE ports.name=%s AND categories.name=%s""",
name, category)
for fields in lines:
# Now, add dependencies.
name = fields[0]
b_deps = fields[7]
r_deps = fields[8]
for dep in b_deps.split():
cursor.execute("""SELECT id FROM ports WHERE name=%s""", name)
port_id = cursor.fetchone()[0]
cursor.execute("""SELECT id FROM ports WHERE name=%s""", dep)
depends_id = cursor.fetchone()[0]
cursor.execute("INSERT INTO depends VALUES (%s, %s)",
port_id, depends_id)
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## for dep in r_deps.split():
## cursor.execute("""SELECT id FROM ports WHERE name=%s""", name)
## port_id = cursor.fetchone()[0]
## cursor.execute("""SELECT id FROM ports WHERE name=%s""", dep)
## depends_id = cursor.fetchone()[0]
## cursor.execute("INSERT INTO depends VALUES (%s, %s)",
## port_id, depends_id)
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indexfd.close()
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cursor.execute("CREATE INDEX in_category_port_id ON in_category (port_id)")
cursor.execute("CREATE INDEX depends_port_id ON depends (port_id)")
cursor.execute("CREATE INDEX depends_depends_id ON depends (depends_id)")
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db.commit()
return db
class FreeBSD(callbacks.Privmsg):
"""
Module for FreeBSD-specific stuff. Currently contains only the commands
for searching the Ports database.
"""
def __init__(self):
callbacks.Privmsg.__init__(self)
self.db = makeDb(dbFile, getIndex())
self.lastUpdated = time.time()
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_globtrans = string.maketrans('?*', '_%')
def searchports(self, irc, msg, args):
"""[--name=<glob>] [--category=<glob>] [--depends=<glob>] """ \
"""[--info=<glob>] [--maintainer=<glob>] [--website=<glob>]
Returns the names of ports matching the constraints given. Each
constraint can be specified as an unambiguous prefix of the constraint
name -- i.e., --n works for --name. Arguments not preceded by switches
are interpreted as having been preceded by the --name switch.
"""
(optlist, rest) = getopt.getopt(args, '', ['name=', 'category=',
'depends=', 'info=',
'maintainer=', 'website='])
for s in rest:
optlist.append(('--name', s))
cursor = self.db.cursor()
tables = ['ports']
constraints = []
arguments = []
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dependsConstraints = []
dependsArguments = []
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for (option, argument) in optlist:
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if len(argument.translate(string.ascii, '*%_?')) < 2:
irc.error(msg, 'You must provide 2 non-wildcard characters.')
option = option[2:]
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argument = argument.translate(self._globtrans)
if option in ('name', 'info', 'maintainer', 'website'):
constraints.append('ports.%s LIKE %%s' % option)
arguments.append(argument)
elif option == 'category':
if 'categories' not in tables:
tables.insert(0, 'categories')
tables.insert(0, 'in_category')
constraints.append('categories.name LIKE %s')
arguments.append(argument)
constraints.append('in_category.category_id=categories.id')
constraints.append('in_category.port_id=ports.id')
elif option == 'depends':
if 'depends' not in tables:
tables.append('depends')
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dependsConstraints.append('ports.id=depends.port_id')
dependsConstraints.append("""depends.depends_id IN
(SELECT ports.id FROM ports
WHERE ports.name LIKE %s)""")
else:
for (i, s) in enumerate(dependsConstraints):
if s.startswith('depends.depends_id IN'):
s = s.replace('%s)', '%s OR ports.name LIKE %s)')
dependsConstraints[i] = s
dependsArguments.append(argument)
sql = """SELECT ports.name FROM %s WHERE %s""" % \
(', '.join(tables), ' AND '.join(constraints+dependsConstraints))
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debug.printf(sql)
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cursor.execute(sql, *(arguments+dependsArguments))
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if cursor.rowcount == 0:
irc.reply(msg, 'No ports matched those constraints.')
return
names = [t[0] for t in cursor.fetchall()]
shrunkenNames = names[:]
ircutils.shrinkList(shrunkenNames)
if len(names) != len(shrunkenNames):
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irc.reply(msg, '%s ports matched those constraints. ' \
'Please narrow your search.' % cursor.rowcount)
else:
irc.reply(msg, ', '.join(names))
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def numports(self, irc, msg, args):
"""takes no arguments
Returns the total number of ports in the database.
"""
cursor = self.db.cursor()
cursor.execute("""SELECT COUNT(id) FROM ports""")
number = cursor.fetchone()[0]
irc.reply(msg, 'There are %s ports in my database.' % number)
def randomport(self, irc, msg, args):
"""takes no arguments
Returns a random port from the database.
"""
cursor = self.db.cursor()
cursor.execute("""SELECT name, info, website, maintainer FROM ports
ORDER BY random()
LIMIT 1""")
(name, info, website, maintainer) = cursor.fetchone()
s = '%s: %s (maintained by %s; more info at %s)' %\
(name, info, website, maintainer)
irc.reply(msg, s)
def portinfo(self, irc, msg, args):
"""<port name>
Gives the information from the database on a given port.
"""
name = privmsgs.getArgs(args)
cursor = self.db.cursor()
cursor.execute("""SELECT id, info, maintainer, website FROM ports
WHERE name=%s""", name)
if cursor.rowcount == 0:
irc.reply(msg, 'No port matched the %r.' % name)
return
(id, info, maintainer, website) = cursor.fetchone()
cursor.execute("""SELECT categories.name FROM categories, in_category
WHERE in_category.port_id=%s
AND categories.id=in_category.category_id""", id)
categories = map(lambda t: t[0], cursor.fetchall())
irc.reply(msg, '%s; Categories: %s; Maintainer: %s; Website: %s' %
(info, ', '.join(categories), maintainer, website))
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Class = FreeBSD
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if __name__ == '__main__':
makeDb(dbFile, getIndex(), replace=True)
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: