data.py
3.51 KB
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
#!/usr/bin/python
# AppRecommender - A GNU/Linux application recommender
#
# Copyright (C) 2010 Tassia Camoes <tassia@gmail.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, either version 3 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, see <http://www.gnu.org/licenses/>.
import os
import sys
import re
import xapian
import axi
from debian import debtags
class Item:
""" """
class Package(Item):
""" """
def __init__(self,package_name):
""" """
self.package_name = package_name
def load_package_info(self):
""" """
print "debian pkg",self.id
def normalize_tags(string):
""" Normalize tag string so that it can be indexed and retrieved. """
return string.replace(':','_').replace('-','\'')
class DataRepository:
""" """
# FIXME todos os repositorios devem ser singleton
class DebtagsDB(debtags.DB):
def __init__(self,path):
self.path = path
def load(self):
tag_filter = re.compile(r"^special::.+$|^.+::TODO$")
try:
self.read(open(self.path, "r"), lambda x: not tag_filter.match(x))
return 1
except IOError:
print >> sys.stderr, ("IOError: could not open debtags file \'%s\'"
% self.path)
return 0
def get_relevant_tags(self,pkgs_list,qtd_of_tags):
""" Return most relevant tags considering a list of packages. """
relevant_db = self.choose_packages(pkgs_list)
relevance_index = debtags.relevance_index_function(self,relevant_db)
sorted_relevant_tags = sorted(relevant_db.iter_tags(),
lambda a, b: cmp(relevance_index(a),
relevance_index(b)))
return normalize_tags(' '.join(sorted_relevant_tags[-qtd_of_tags:]))
class DebtagsIndex:
def __init__(self,path):
self.path = path
def load(self,debtags_db,reindex):
""" Load an existing debtags index. """
if not reindex:
try:
#print ("Opening existing debtags xapian index at \'%s\'" %
# self.path)
self.index = xapian.Database(self.path)
except DatabaseError:
print "Could not open debtags xapian index"
reindex =1
if reindex:
self.reindex(debtags_db)
def reindex(self,debtags_db):
""" Create a xapian index for debtags info based on file 'debtags_db'
and place it at 'index_path'.
"""
if not os.path.exists(self.path):
os.makedirs(self.path)
print "Creating new debtags xapian index at \'%s\'" % self.path
self.index = xapian.WritableDatabase(self.path,
xapian.DB_CREATE_OR_OVERWRITE)
for pkg,tags in debtags_db.iter_packages_tags():
doc = xapian.Document()
doc.set_data(pkg)
for tag in tags:
doc.add_term(normalize_tags(tag))
print "indexing ",self.index.add_document(doc)