Opprettet google_interface

google_interface.py inneholder funksjonalitet som svarer til kommandoen "worblehat suggest-book-data"
This commit is contained in:
Andreas Lindahl Flåten 2011-10-08 14:08:15 +00:00
parent b808517be3
commit d9f41d3e7e

222
cli/google_interface.py Normal file
View File

@ -0,0 +1,222 @@
#!/usr/bin/python
import os
from gdata.books.service import BookService
import xml.parsers.expat
import readline
import re
import random
import pgdb
import sys
from fileformat import *
from util import *
exit_commands = ['exit', 'abort', 'quit', 'bye', 'eat flaming death', 'q']
comments = ""
# midlertidig
connection = pgdb.connect(database='oysteini_pbb2',
user='oysteini_pbb',
password='lio5Aide',
host='postgres.pvv.ntnu.no');
def suggest_book(dbconnection, tmp_file=False):
service = BookService(source='Programvareverkstedet - Worblehat - 0.1a ')
action_list = []
print("Enter ISBN number(s), end with eof")
for indata in sys.stdin:
if indata in exit_commands:
print("aborted")
break
if book_in_db(dbconnection, indata):
action_list.append("# Book with isbn: " + str(indata) + " is already in DB, skipped")
else:
feed = service.search_by_keyword('isbn='+indata)
if feed.entry:
# action_list is passed to build_book to fill in missing authors
action_list.append(build_book(dbconnection, feed.entry[0], indata, action_list))
else:
print("No items found")
if tmp_file:
# TODO: write to tmp file
else:
print(write_actionlist(action_list))
def book_in_db(dbconnection, isbn):
cursor = dbconnection.cursor()
query = "SELECT book FROM books WHERE lastname=%(last)s OR firstname=%(first)s"
cursor.execute(query, {'last':last, 'first':first} )
candidates = fetchall_dict(cursor)
pass
def found_item(entry, indata):
print "Found: "+entry.dc_title[0].text
build_book(entry, indata)
def build_book(dbconnection, entry, indata=False):
dic = entry.to_dict()
print("Dict in build_book:" + str(dic))
print("")
book = {}
book['action'] = 'new-book'
isbn = find_isbn(unicode(dic['identifiers']))
if isbn:
book['isbn'] = unicode(isbn)
elif indata:
if len(indata) == 13:
book['isbn'] = unicode(indata)
else:
comment("No ISBN found.")
return False
book['title'] = unicode(entry.dc_title[0].text)
set_value(book, dic, 'category')
if len(entry.dc_title) > 0:
book['subtitle'] = unicode(''.join(map(lambda x: x.text, entry.dc_title[1:])))
authors = build_authors(dbconnection, dic)
book['persons'] = {}
book['persons']['author'] = [author['id'] for author in authors]
if 'publishers' in dic:
book['publisher'] = unicode(','.join(dic['publishers']))
if 'date' in dic:
book['published_year'] = int(dic['date'][:4])
set_value(book, dic, 'edition')
book['num_pages'] = find_page_number(dic)
set_value(book, dic, 'series')
book['description'] = unicode(find_description(dic))
book['references'] = {}
book['references']['google-books'] = [unicode(dic['preview'])]
global comments
book['comment'] = comments
comments = ''
return book
def comment(comm):
global comments
comments += u'%s\n' % comm
def set_value(book, dic, key):
if key in dic:
book[key] = unicode(dic[key])
else:
book[key] = None
def find_description(dic):
if 'description' in dic:
return unescape(dic['description'])
else:
return ""
def find_page_number(dic):
if 'format' in dic:
for item in dic['format']:
if 'pages' in item:
return int(re.findall(r'[0-9]+',item)[0])
return None
else:
return None
def find_isbn(identifiers):
for pair in identifiers:
if pair[0] =='ISBN' and len(pair[1])==13:
return pair[1]
return False
def build_authors(dbconnection, dictionary):
if 'authors' in dictionary:
author_list = []
for author in dictionary['authors']:
author_list.append(get_or_create_author(dbconnection, author))
return author_list
else:
comment("No authors found.")
return []
def get_or_create_author(dbconnection, author_name):
author = {}
author['action'] = 'new-person'
names = author_name.split()
first = ' '.join(names[:-1])
last = names[-1]
author['first_name'] = first
author['last_name'] = last
cursor = dbconnection.cursor()
query = "SELECT id FROM person WHERE lastname=%(last)s OR firstname=%(first)s"
cursor.execute(query, {'last':last, 'first':first} )
candidates = fetchall_dict(cursor)
if len(candidates) == 1:
return candidates[0]
if len(candidates) > 1:
# TODO: TEST
print("Found several candidates:")
for i in range(candidates):
print "%d: %s" % (i,
feed.entry[i].dc_title[0].text)
candno = (int)(raw_input("Which candidate do you want? [0-%d] " % (len(candidates) - 1)))
return candidates[candno]
else:
print("No candidate found for " + author_name + ", making new person")
newid = ''.join([i[0] for i in names]).lower()
# Check if id already exists
idq =
#Cargo-cult coded function to unescape special XML characters
def select_from_list(list, attributes=False, item_name=""):
if len(list) == 0:
return None
elif len(list) == 1:
return list[0]
else:
return None
def unescape(s):
want_unicode = False
if isinstance(s, unicode):
s = s.encode("utf-8")
want_unicode = True
# the rest of this assumes that `s` is UTF-8
list = []
# create and initialize a parser object
p = xml.parsers.expat.ParserCreate("utf-8")
p.buffer_text = True
p.returns_unicode = want_unicode
p.CharacterDataHandler = list.append
# parse the data wrapped in a dummy element
# (needed so the "document" is well-formed)
p.Parse("<e>", 0)
p.Parse(s, 0)
p.Parse("</e>", 1)
# join the extracted strings and return
es = ""
if want_unicode:
es = u""
return es.join(list)
suggest_book(connection)