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#!/usr/bin/python
# axi-searchasyoutype - Search-as-you-type demo
#
# Copyright (C) 2008 Matteo Zandi, Enrico Zini <enrico@debian.org>
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Note: this program needs python-gtkhtml2 to work
from optparse import OptionParser
import sys
VERSION="0.1"
# Let's start with a simple command line parser with help
class Parser(OptionParser):
def __init__(self, *args, **kwargs):
OptionParser.__init__(self, *args, **kwargs)
def error(self, msg):
sys.stderr.write("%s: error: %s\n\n" % (self.get_prog_name(), msg))
self.print_help(sys.stderr)
sys.exit(2)
parser = Parser(usage="usage: %prog [options] keywords",
version="%prog "+ VERSION,
description="Query the Apt Xapian index. Command line arguments can be keywords or Debtags tags")
parser.add_option("-t", "--type", help="package type, one of 'game', 'gui', 'cmdline' or 'editor'")
(options, args) = parser.parse_args()
import gtk, pygtk
# Import the rest here so we don't need dependencies to be installed only to
# print commandline help
import os, math
import xapian
from aptxapianindex import *
from debian import deb822
import gtkhtml2
# Instantiate a xapian.Database object for read only access to the index
db = xapian.Database(XAPIANDB)
# Instantiate the APT cache as well
cache = apt.Cache()
# Facet name -> Short description
facets = dict()
# Tag name -> Short description
tags = dict()
for p in deb822.Deb822.iter_paragraphs(open("/var/lib/debtags/vocabulary", "r")):
if "Description" not in p: continue
desc = p["Description"].split("\n", 1)[0]
if "Tag" in p:
tags[p["Tag"]] = desc
elif "Facet" in p:
facets[p["Facet"]] = desc
def SimpleOrQuery(input_terms):
"""
Simple OR Query
terms is an array of words
"""
if len(input_terms) == 0:
# No text given: abort
return []
# To understand the following code, keep in mind that we do
# search-as-you-type, so the last word may be partially typed.
if len(input_terms[-1]) == 1:
# If the last term has only one character, we ignore it waiting for
# the user to type more. A better implementation can set up a
# timer to disable this some time after the user stopped typing, to
# give meaningful results to searches like "programming in c"
input_terms = input_terms[:-1]
if len(input_terms) == 0:
return [], []
# Convert the words into terms for the query
terms = termsForSimpleQuery(input_terms)
# Since the last word can be partially typed, we add all words that
# begin with the last one.
terms.extend([x.term for x in db.allterms(input_terms[-1])])
# Build the query
query = xapian.Query(xapian.Query.OP_OR, terms)
# Add the simple user filter, if requested. This is to show that even
# when we do search-as-you-type, everything works as usual
query = addSimpleFilterToQuery(query, options.type)
# Perform the query
enquire = xapian.Enquire(db)
enquire.set_query(query)
# This does the adaptive cutoff trick on the query results (see
# axi-query-adaptivecutoff.py)
mset = enquire.get_mset(0, 1)
try:
topWeight = mset[0].weight
except IndexError:
return [], []
enquire.set_cutoff(0, topWeight * 0.7)
# Select the first 30 documents as the key ones to use to compute relevant
# terms
packages = []
rset = xapian.RSet()
for m in enquire.get_mset(0, 30):
rset.add_document(m.docid)
name = m.document.get_data()
score = m.percent
try:
pkg = cache[name]
except KeyError:
continue
# pkg.candidate may be none
try:
shortdesc = pkg.candidate.summary
except AttributeError:
continue
packages.append((score, name, shortdesc))
class Filter(xapian.ExpandDecider):
def __call__(self, term):
#return term[0].islower() or term[:2] == "XT"
return term[:2] == "XT"
def format(k):
if k in tags:
facet = k.split("::", 1)[0]
if facet in facets:
return "<i>%s: %s</i>" % (facets[facet], tags[k])
else:
return "<i>%s</i>" % tags[k]
else:
return k
taglist = []
maxscore = None
for res in enquire.get_eset(15, rset, Filter()):
# Normalise the score in the interval [0, 1]
weight = math.log(res.weight)
if maxscore == None: maxscore = weight
tag = res.term[2:]
taglist.append(
(tag, format(tag), float(weight) / maxscore)
)
taglist.sort(key=lambda x:x[0])
if len(taglist) == 0:
return [], []
return packages, taglist
def mark_text_up(result_list):
# 0-100 score, key (facet::tag), description
document = gtkhtml2.Document()
document.clear()
document.open_stream("text/html")
document.write_stream("""<html><head>
<style type="text/css">
a { text-decoration: none; color: black; }
</style>
</head><body>""")
for tag, desc, score in result_list:
document.write_stream('<a href="%s" style="font-size: %d%%">%s</a> ' % (tag, score*150, desc))
document.write_stream("</body></html>")
document.close_stream()
return document
class Demo:
def __init__(self):
w = gtk.Window()
w.connect('destroy', gtk.main_quit)
w.set_default_size(400, 400)
self.model = gtk.ListStore(int, str, str)
treeview = gtk.TreeView()
treeview.show()
treeview.set_model(self.model)
cell_pct = gtk.CellRendererText()
column_pct = gtk.TreeViewColumn ("Percent", cell_pct, text=0)
column_pct.set_sort_column_id(0)
treeview.append_column(column_pct)
cell_name = gtk.CellRendererText()
column_name = gtk.TreeViewColumn ("Name", cell_name, text=1)
column_name.set_sort_column_id(0)
treeview.append_column(column_name)
cell_desc = gtk.CellRendererText()
column_desc = gtk.TreeViewColumn ("Name", cell_desc, text=2)
column_desc.set_sort_column_id(0)
treeview.append_column(column_desc)
document = gtkhtml2.Document()
document.clear()
document.open_stream("text/html")
document.write_stream("<html><body>Welcome, enter some text to start!</body></html>")
document.close_stream()
self.view = gtkhtml2.View()
self.view.set_document(document)
scrolledwin = gtk.ScrolledWindow()
scrolledwin.show()
scrolledwin.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
scrolledwin.add(treeview)
vbox = gtk.VBox(False, 0)
vbox.pack_start(scrolledwin, True, True, 0)
vbox.pack_start(self.view, True, True, 0)
self.entry = gtk.Entry()
self.entry.connect('changed', self.on_entry_changed)
vbox.pack_start(self.entry, False, True, 0)
w.add(vbox)
w.show_all()
gtk.main()
def on_entry_changed(self, widget, *args):
packageslist, tags = SimpleOrQuery(widget.get_text().split())
self.model.clear()
for item in packageslist:
self.model.append(item)
doc = mark_text_up(tags)
doc.connect('link_clicked', self.on_link_clicked)
self.view.set_document(doc)
def on_link_clicked(self, document, link):
self.entry.set_text(link + " " + self.entry.get_text().lstrip())
if __name__ == "__main__":
demo = Demo()
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