477 lines
16 KiB
Python
Executable File
477 lines
16 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import sys
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import getopt
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import pgdb
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from fileformat import read_actionlist, write_actionlist
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from util import *
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# connection = pgdb.connect(database='oysteini_pbb2',
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# user='oysteini_pbb',
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# password='lio5Aide',
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# host='postgres.pvv.ntnu.no');
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# c = connection.cursor()
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# c.execute('SELECT * from book')
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# print fetchall_dict(c)
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q_list_books = \
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'SELECT isbn, book.id AS id, title, category, person.id AS person_id, ' \
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' lastname, firstname ' \
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'FROM book ' \
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'LEFT JOIN bookperson ON book.isbn=bookperson.book ' \
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'LEFT JOIN person ON bookperson.person=person.id'
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q_list_persons = \
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'SELECT person.id, person.firstname, person.lastname, ' \
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' COUNT(bookperson.id) AS num_books ' \
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'FROM person LEFT JOIN bookperson ON person.id=bookperson.person ' \
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'GROUP BY person.id, person.firstname, person.lastname'
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q_list_categories = \
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'SELECT category.id, category.name, ' \
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' COUNT(book.isbn) AS num_books ' \
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'FROM category ' \
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'LEFT JOIN book ON category.id=book.category ' \
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'GROUP BY category.id, category.name'
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q_persons_for_book = \
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'SELECT person.id, lastname, firstname, relation ' \
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'FROM person ' \
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'INNER JOIN bookperson ON person.id=bookperson.person ' \
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'WHERE bookperson.book=%(isbn)s'
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q_books_for_person = \
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'SELECT isbn, title, relation ' \
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'FROM bookperson ' \
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'INNER JOIN book ON bookperson.book=book.isbn ' \
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'WHERE bookperson.person=%(id)s'
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q_books_for_category = \
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'SELECT isbn, title ' \
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'FROM book ' \
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'WHERE category=%(id)s'
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q_new_person = \
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'INSERT INTO person (id, lastname, firstname) ' \
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'VALUES (%(id)s, %(lastname)s, %(firstname)s)'
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q_edit_person = \
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'UPDATE person ' \
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'SET lastname=%(lastname)s, firstname=%(firstname)s ' \
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'WHERE id=%(id)s'
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q_new_book = \
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'INSERT INTO book ' \
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' (isbn, id, title, subtitle, category, publisher, ' \
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' published_year, edition, pages, series, description) ' \
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'VALUES (%(isbn)s, %(id)s, %(title)s, %(subtitle)s, %(category)s, %(publisher)s, ' \
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' %(published_year)d, %(edition)s, %(pages)d, %(series)s, %(description)s)'
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q_edit_book = \
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'UPDATE book ' \
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'SET isbn=%(isbn)s, id=%(id)s, title=%(title)s, ' \
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' subtitle=%(subtitle)s, category=%(category)s, ' \
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' publisher=%(publisher)s, published_year=%(published_year)s, ' \
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' edition=%(edition)s, pages=%(pages)s, series=%(series)s, ' \
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' description=%(description)s ' \
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'WHERE isbn=%(isbn)s'
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q_remove_bookpersons = \
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'DELETE FROM bookperson WHERE book=%(isbn)s'
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q_add_bookperson = \
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'INSERT INTO bookperson (book, person, relation) ' \
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'VALUES (%(isbn)s, %(person_id)s, %(relation)s)'
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q_new_category = \
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'INSERT INTO category (id, name) ' \
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'VALUES (%(id)s, %(name)s)'
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q_edit_category = \
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'UPDATE category ' \
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'SET name=%(name)s ' \
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'WHERE id=%(id)s'
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def connect_to_db():
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connection = pgdb.connect(database='oysteini_pbb2',
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user='oysteini_pbb',
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password='lio5Aide',
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host='postgres.pvv.ntnu.no')
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return connection
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def get_by_id(connection, id):
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c = connection.cursor()
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q_book = 'SELECT * FROM book WHERE isbn=%(id)s OR id=%(id)s'
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q_person = 'SELECT * FROM person WHERE id=%(id)s'
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q_cat = 'SELECT * FROM category WHERE id=%(id)s'
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for (typ,q) in [('book', q_book),
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('person', q_person),
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('category', q_cat)]:
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c.execute(q, {'id': id})
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if c.rowcount > 0:
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d = fetchone_dict(c)
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d['type'] = typ
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return d
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return None
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def list_of_dicts_to_dict(lst, key_name, value_name):
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res = {}
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for d in lst:
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if d[key_name] in res:
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res[d[key_name]].append(d[value_name])
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else:
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res[d[key_name]] = [d[value_name]]
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return res
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def get_persons_for_book(connection, isbn):
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c = connection.cursor()
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c.execute(q_persons_for_book, {'isbn': isbn})
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return fetchall_dict(c)
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def get_books_for_person(connection, person_id):
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c = connection.cursor()
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c.execute(q_books_for_person, {'id': person_id})
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return fetchall_dict(c)
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def get_books_for_category(connection, cat_id):
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c = connection.cursor()
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c.execute(q_books_for_category, {'id': cat_id})
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return fetchall_dict(c)
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def show_book(book):
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s = ''
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if book['id']:
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s += 'book %s %s\n' % (book['isbn'], book['id'])
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else:
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s += 'book %s\n' % book['isbn']
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s += 'Title: %s\n' % book['title']
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if book['subtitle']:
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s += 'Subtitle: %s\n' % book['subtitle']
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s += 'ISBN: %s\n' % book['isbn']
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s += 'Persons:\n'
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for bp in book['persons_data']:
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s += ' %s %s %s (%s)\n' % (bp['id'], bp['firstname'], bp['lastname'],
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bp['relation'])
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if len(book['persons_data']) == 0:
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s += ' (no persons associated with this book)\n'
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if book['series']:
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s += 'Part of series: %s %s\n' % (book['series'], book['series_title'])
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s += 'Category: %s\n' % book['category']
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if book['publisher']:
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s += 'Publisher: %s\n' % book['publisher']
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if book['published_year']:
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s += 'Published year: %s\n' % book['published_year']
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if book['edition']:
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s += 'Edition: %s\n' % book['edition']
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if book['pages']:
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s += 'Number of pages: %s\n' % book['pages']
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if book['description']:
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s += ('Description:\n%s\n' %
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'\n'.join(map(lambda line: ' '+line,
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book['description'].split('\n'))))
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return s
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def show_person(person):
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s = 'person %s\n' % person['id']
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s += 'Name: %s %s\n' % (person['firstname'], person['lastname'])
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s += 'Books:\n'
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for book in person['books']:
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s += ' %-13s %s (%s)\n' % (book['isbn'], book['title'], book['relation'])
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if len(person['books']) == 0:
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s += ' (no books by this person)\n'
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return s
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def show_category(cat):
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s = 'category %s\n' % cat['id']
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s += 'Name: %s\n' % cat['name']
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s += 'Books:\n'
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for book in cat['books']:
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s += ' %-13s %s\n' % (book['isbn'], book['title'])
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if len(cat['books']) == 0:
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s += ' (no books)\n'
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return s
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def show(connection, ids, commit_format=False, tmp_file=False):
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objects = map(lambda id: get_by_id(connection, id), ids)
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for i in range(len(ids)):
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if not objects[i]:
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objects[i] = 'No object with id %s.\n' % ids[i]
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continue
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typ = objects[i]['type']
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if typ == 'book':
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persons = get_persons_for_book(connection, objects[i]['isbn'])
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objects[i]['persons'] = list_of_dicts_to_dict(persons, 'relation', 'id')
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objects[i]['persons_data'] = persons
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elif typ == 'person':
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books = get_books_for_person(connection, objects[i]['id'])
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objects[i]['books'] = books
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elif typ == 'category':
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books = get_books_for_category(connection, objects[i]['id'])
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objects[i]['books'] = books
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if commit_format:
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objects[i]['action'] = 'edit-%s' % typ
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else:
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show_funs = {'book': show_book,
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'person': show_person,
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'category': show_category}
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show_fun = show_funs[objects[i]['type']]
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objects[i] = show_fun(objects[i])
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if commit_format:
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output = write_actionlist(objects)
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else:
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output = '\n'.join(objects)
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if tmp_file:
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filename = write_tmpfile('.'.join(ids), output)
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print filename
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return filename
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else:
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print output.strip()
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def list_books(connection):
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c = connection.cursor()
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c.execute(q_list_books)
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#print fetchall_dict(c)
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s = ''
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last_isbn = None
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for i in xrange(c.rowcount):
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d = fetchone_dict(c)
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if d['isbn'] != last_isbn:
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if last_isbn != None:
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s += '\n'
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s += '%-13s %-10s %-40s' % (d['isbn'], str_or_empty(d['id']), d['title'])
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if d['person_id']:
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s += ' ' + d['person_id']
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else:
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s += ', ' + d['person_id']
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last_isbn = d['isbn']
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print s
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def list_persons(connection):
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c = connection.cursor()
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c.execute(q_list_persons)
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for i in xrange(c.rowcount):
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person = fetchone_dict(c)
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print '%-5s %-30s %d books' % (person['id'],
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person['firstname']+' '+person['lastname'],
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person['num_books'])
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def list_categories(connection):
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c = connection.cursor()
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c.execute(q_list_categories)
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for i in xrange(c.rowcount):
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cat = fetchone_dict(c)
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print '%-15s %-30s %d books' % (cat['id'], cat['name'], cat['num_books'])
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def list_cmd(connection, what):
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funs = { 'book': list_books,
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'person': list_persons,
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'category': list_categories }
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fun = funs[what]
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fun(connection)
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def search_book(connection, search_strings, search_description=False):
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c = connection.cursor()
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c.execute('SELECT * FROM book WHERE book.title LIKE %(search_strings)s', {"search_strings": '%' + search_strings[0] + '%'})
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for i in xrange(c.rowcount):
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cat = fetchone_dict(c)
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print cat['title']
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def search_person(connection, search_strings):
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pass
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def do_action(connection, action):
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print 'ACTION %s ' % action
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c = connection.cursor()
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queries = {'new-person': q_new_person,
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'edit-person': q_edit_person,
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'new-book': q_new_book,
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'edit-book': q_edit_book,
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'new-category': q_new_category,
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'edit-category': q_edit_category}
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action_type = action['action']
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c.execute(queries[action_type], action)
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if action_type in ['new-book', 'edit-book']:
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print 'FIXING PERSONS: REMOVING'
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c.execute(q_remove_bookpersons, {'isbn': action['isbn']})
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print 'FIXING PERSONS: ADDING'
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if action['persons']:
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for (relation, personlist) in action['persons'].items():
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for person in personlist:
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c.execute(q_add_bookperson,
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{'isbn': action['isbn'],
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'person_id': person,
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'relation': relation})
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def commit_actions(connection, actions):
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for action in actions:
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try:
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do_action(connection, action)
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except pgdb.DatabaseError, err:
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print>>sys.stderr, 'Error in "%s" action: %s' % (action['action'], err)
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print>>sys.stderr, 'Giving up.'
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return
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connection.commit()
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def commit(connection, filename=None):
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if filename:
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try:
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f = file(filename, 'r')
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text = f.read()
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f.close()
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except IOError, e:
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print 'commit: Error reading file %s: %s' % (filename, e)
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print 'Exiting.'
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sys.exit(1)
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else:
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text = sys.stdin.read()
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actions = read_actionlist(text)
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commit_actions(connection, actions)
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def edit(connection, ids):
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pass
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def map_cmd(connection, shelfname=None, category=None):
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pass
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commands = { 'show':
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{ 'args': [('ids', (1,None))],
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'options': ['commit_format', 'tmp_file'],
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'fun': show,
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'use_db': True },
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'list':
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{ 'args': [('what', (1,1))],
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'options': [],
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'fun': list_cmd,
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'use_db': True },
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'search':
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{ 'args': [('search_strings', (1,None))],
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'options': ['search_description'],
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'fun': search_book,
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'use_db': True },
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'search-person':
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{ 'args': [('search_strings', (1,None))],
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'options': [],
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'fun': search_person,
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'use_db': True },
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'commit':
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{ 'args': [('filename', (0,1))],
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'options': [],
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'fun': commit,
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'use_db': True },
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'edit':
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{ 'args': [('ids', (1,None))],
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'options': [],
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'fun': edit,
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'use_db': True },
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'map':
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{ 'args': [('shelfname', (0,1)), ('category', (0,1))],
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'options': [],
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'fun': map_cmd,
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'use_db': True }
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}
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flags = { 'commit_format':
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{ 'help': 'output data in the format expected by the commit command' },
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'tmp_file':
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{ 'help': 'output data to a new temporary file instead of to stdout' },
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'search_description':
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{ 'help': 'include description field when searching' }
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}
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general_options = [] # options applicable to all commands
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class BadCommandLine(Exception):
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def __init__(self, msg):
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Exception.__init__(self, 'Bad command line: ' + msg)
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def check_command_args(args, command):
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cmd_decl = commands[command]
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min_num_args = sum(map(lambda a: a[1][0], cmd_decl['args']))
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unlimited = any(map(lambda a: a[1][1] == None, cmd_decl['args']))
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if not unlimited:
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max_num_args = sum(map(lambda a: a[1][1], cmd_decl['args']))
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if len(args) < min_num_args:
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raise BadCommandLine('Too few arguments for command %s (expects at least %d, %d given).'
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% (command, min_num_args, len(args)))
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if (not unlimited) and (len(args) > max_num_args):
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raise BadCommandLine('Too many arguments for command %s (expects at most %d, %d given).'
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% (command, max_num_args, len(args)))
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def check_command_opts(opts, command):
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cmd_decl = commands[command]
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for opt,val in opts:
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if ((opt not in cmd_decl['options']) and
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(opt not in general_options)):
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raise BadCommandLine('Option %s not applicable to command %s.'
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% (opt, command))
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def assign_command_args(args, command):
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cmd_decl = commands[command]
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d = {}
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i = 0
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for param in cmd_decl['args']:
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pname = param[0]
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pmin = param[1][0]
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pmax = param[1][1]
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if pmax == 1:
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if i < len(args):
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d[pname] = args[i]
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i += 1
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else:
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d[pname] = None
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else:
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d[pname] = []
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j = 0
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while i + j < len(args) and (pmax == None or j < pmax):
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d[pname].append(args[i + j])
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j += 1
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i = i + j
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return d
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def assign_command_opts(opts, command):
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d = {}
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for option, value in opts:
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if option in flags:
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d[option] = True
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else:
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d[option] = value
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return d
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def parse_cmdline(args):
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def getopt_option_name(internal_name):
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return internal_name.replace('_', '-')
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def internal_option_name(getopt_ret_name):
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return getopt_ret_name[2:].replace('-', '_')
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option_names = map(getopt_option_name, flags)
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options, args = getopt.getopt(args, '', option_names)
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if len(args) == 0:
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raise BadCommandLine('No command specified.')
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cmd_name = args[0]
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if cmd_name not in commands:
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raise BadCommandLine('Nonexisting command %s.' % cmd_name)
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cmd_decl = commands[cmd_name]
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cmd_args = args[1:]
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cmd_opts = map(lambda (opt,val): (internal_option_name(opt), val),
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options)
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check_command_args(cmd_args, cmd_name)
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check_command_opts(cmd_opts, cmd_name)
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return { 'command': cmd_name,
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'args': combine_dicts(assign_command_args(cmd_args, cmd_name),
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assign_command_opts(cmd_opts, cmd_name)) }
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def invoke_command(command, args):
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cmd_decl = commands[command]
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cmd_decl['fun'](**args)
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def main(argv):
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cmdline_parsed = parse_cmdline(argv[1:])
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#print 'command line parsed to:', cmdline_parsed
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command = cmdline_parsed['command']
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args = cmdline_parsed['args']
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if commands[cmdline_parsed['command']]['use_db']:
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connection = connect_to_db()
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args['connection'] = connection
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invoke_command(command, args)
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if __name__ == "__main__":
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main(sys.argv)
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