Begynt å implementere kommandoene for å vise bøker.

cli/worblehat.py

@@ -7,64 +7,183 @@ import pgdb
 from fileformat import read_actionlist, write_actionlist
 from util import *
 
+# connection = pgdb.connect(database='oysteini_pbb2',
+#                           user='oysteini_pbb',
+#                           password='lio5Aide',
+#                           host='postgres.pvv.ntnu.no');
+
+# c = connection.cursor()
+# c.execute('SELECT * from book')
+# print fetchall_dict(c)
+
+q_list_books = \
+    'SELECT isbn, book.id AS id, title, category, person.id AS person_id, ' \
+    '       lastname, firstname ' \
+    'FROM book ' \
+    'LEFT JOIN bookperson ON book.isbn=bookperson.book ' \
+    'LEFT JOIN person ON bookperson.person=person.id'
+
+def connect_to_db():
     connection = pgdb.connect(database='oysteini_pbb2',
                               user='oysteini_pbb',
                               password='lio5Aide',
-                          host='postgres.pvv.ntnu.no');
+                              host='postgres.pvv.ntnu.no')
+    return connection
 
+def get_by_id(connection, id):
     c = connection.cursor()
-c.execute('SELECT * from book')
+    q_book = 'SELECT * FROM book WHERE isbn=%(id)s OR id=%(id)s'
-print fetchall_dict(c)
+    q_person = 'SELECT * FROM person WHERE id=%(id)s'
+    q_cat = 'SELECT * FROM category WHERE id=%(id)s'
+    for (typ,q) in [('book', q_book),
+                    ('person', q_person),
+                    ('category', q_cat)]:
+        c.execute(q, {'id': id})
+        if c.rowcount > 0:
+            d = fetchone_dict(c)
+            d['type'] = typ
+            return d
+    return None
 
-def show(ids, commit_format=False, tmp_file=False):
+def show_book(book):
+    s = ''
+    if book['id']:
+        s += 'book %s %s\n' % (book['isbn'], book['id'])
+    else:
+        s += 'book %s\n' % book['isbn']
+    s += 'Title: %s\n' % book['title']
+    if book['subtitle']:
+    	s += 'Subtitle: %s\n' % book['subtitle']
+    s += 'ISBN: %s\n' % book['isbn']
+    s += 'Persons:\n'
+    # TODO
+    if book['series']:
+        s += 'Part of series: %s %s\n' % (book['series'], book['series_title'])
+    s += 'Category: %s\n' % book['category']
+    if book['publisher']:
+        s += 'Publisher: %s\n' % book['publisher']
+    if book['published_year']:
+        s += 'Published year: %s\n' % book['published_year']
+    if book['edition']:
+        s += 'Edition: %s\n' % book['edition']
+    if book['pages']:
+        s += 'Number of pages: %s\n' % book['pages']
+    if book['description']:
+    	s += ('Description:\n%s\n' %
+              '\n'.join(map(lambda line: ' '+line,
+                            book['description'].split('\n'))))
+    return s
+
+def show_person(person):
+    return ''
+
+def show_category(category):
+    return ''
+
+def show(connection, ids, commit_format=False, tmp_file=False):
+    objects = map(lambda id: get_by_id(connection, id), ids)
+    for i in range(len(ids)):
+        if not objects[i]:
+            objects[i] = 'No object with id %s.\n' % ids[i]
+        elif not commit_format:
+            show_funs = {'book': show_book,
+                         'person': show_person,
+                         'category': show_category}
+            show_fun = show_funs[objects[i]['type']]
+            objects[i] = show_fun(objects[i])
+    if commit_format:
+        output = write_actionlist(objects)
+    else:
+        output = '\n'.join(objects)
+    if tmp_file:
+        filename = write_tmpfile('.'.join(ids), output)
+        print filename
+        return filename
+    else:
+        print output.strip()
+
+def list_books(connection):
+    c = connection.cursor()
+    c.execute(q_list_books)
+    #print fetchall_dict(c)
+    s = ''
+    last_isbn = None
+    for i in xrange(c.rowcount):
+        d = fetchone_dict(c)
+        if d['isbn'] != last_isbn:
+            if last_isbn != None:
+                s += '\n'
+            s += '%-13s %-10s %-40s' % (d['isbn'], str_or_empty(d['id']), d['title'])
+            if d['person_id']:
+                s += ' ' + d['person_id']
+        else:
+            s += ', ' + d['person_id']
+        last_isbn = d['isbn']
+    print s
+
+def list_persons(connection):
     pass
 
-def list_cmd(what):
+def list_categories(connection):
     pass
 
-def search_book(search_strings, search_description=False):
+def list_cmd(connection, what):
+    funs = { 'book': list_books,
+             'person': list_persons,
+             'category': list_categories }
+    fun = funs[what]
+    fun(connection)
+
+def search_book(connection, search_strings, search_description=False):
     pass
 
-def search_person(search_strings):
+def search_person(connection, search_strings):
     pass
 
-def commit(filename=None):
+def commit(connection, filename=None):
     pass
 
-def edit(ids):
+def edit(connection, ids):
     pass
 
-def map_cmd(shelfname=None, category=None):
+def map_cmd(connection, shelfname=None, category=None):
     pass
 
 commands = { 'show':
                  { 'args': [('ids', (1,None))],
                    'options': ['commit_format', 'tmp_file'],
-               'fun': show },
+                   'fun': show,
+                   'use_db': True },
              'list':
                  { 'args': [('what', (1,1))],
                    'options': [],
-                   'fun': list_cmd },
+                   'fun': list_cmd,
+                   'use_db': True },
              'search':
                  { 'args': [('search_strings', (1,None))],
                    'options': ['search_description'],
-               'fun': search_book },
+                   'fun': search_book,
+                   'use_db': True },
              'search-person':
                  { 'args': [('search_strings', (1,None))],
                    'options': [],
-               'fun': search_person },
+                   'fun': search_person,
+                   'use_db': True },
              'commit':
                  { 'args': [('filename', (0,1))],
                    'options': [],
-               'fun': commit },
+                   'fun': commit,
+                   'use_db': True },
              'edit':
                  { 'args': [('ids', (1,None))],
                    'options': [],
-               'fun': edit },
+                   'fun': edit,
+                   'use_db': True },
 	     'map':
                  { 'args': [('shelfname', (0,1)), ('category', (0,1))],
                    'options': [],
-	       'fun': map_cmd }
+                   'fun': map_cmd,
+                   'use_db': True }
              }
 
 flags = { 'commit_format':
@@ -165,7 +284,16 @@ def invoke_command(command, args):
     cmd_decl = commands[command]
     cmd_decl['fun'](**args)
 
-cmdline_parsed = parse_cmdline(sys.argv[1:])
+def main(argv):
-print 'command line parsed to:', cmdline_parsed
+    cmdline_parsed = parse_cmdline(argv[1:])
-invoke_command(cmdline_parsed['command'],
+    #print 'command line parsed to:', cmdline_parsed
-               cmdline_parsed['args'])
+    command = cmdline_parsed['command']
+    args = cmdline_parsed['args']
+    if commands[cmdline_parsed['command']]['use_db']:
+        connection = connect_to_db()
+        args['connection'] = connection
+    invoke_command(command, args)
+
+if __name__ == "__main__":
+    main(sys.argv)
+