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yanker.py
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#! /usr/bin/env python
# Public domain; MZMcBride; 2011
# Version 0.2
import cgi
import operator
import re
import MySQLdb
def database_list():
databases = []
conn = MySQLdb.connect(host='sql-s3',
db='toolserver',
read_default_file='/home/mzmcbride/.my.cnf')
cursor = conn.cursor()
cursor.execute('''
/* yanker.py database_list */
SELECT
dbname
FROM wiki
WHERE is_closed = 0;
''')
for row in cursor.fetchall():
database_name = row[0]
databases.append(database_name)
cursor.close()
conn.close()
return databases
def choose_host_and_domain(db):
db_props = {}
conn = MySQLdb.connect(host='sql-s3',
db='toolserver',
read_default_file='/home/mzmcbride/.my.cnf')
cursor = conn.cursor()
cursor.execute('''
/* yanker.py choose_host_and_domain */
SELECT
server,
domain
FROM wiki
WHERE dbname = %s;
''' , db)
for row in cursor.fetchall():
db_props['host'] = 'sql-s%s' % str(row[0])
db_props['domain'] = '%s' % row[1]
cursor.close()
conn.close()
return db_props
def get_namespace_names(db):
namespaces = {}
conn = MySQLdb.connect(host='sql-s3',
db='toolserver',
read_default_file='/home/mzmcbride/.my.cnf')
cursor = conn.cursor()
cursor.execute('''
/* yanker.py get_namespace_names */
SELECT
ns_id,
ns_name
FROM namespace
WHERE dbname = %s
AND ns_id >= 0;
''' , db)
for row in cursor.fetchall():
namespaces[row[0]] = unicode(row[1], 'utf-8')
cursor.close()
conn.close()
return namespaces
def underscore(text):
text = re.sub(r'(%20| )', '_', text)
return text
def prettify(text):
text = re.sub('_', ' ', text)
return text
form = cgi.FieldStorage()
# Pick a db; make enwiki_p the default
if form.getvalue('db') is not None:
db = form.getvalue('db')
else:
db = 'enwiki_p'
# Use the limit if it's set in the initial URL
if form.getvalue('limit') is not None:
try:
if int(form.getvalue('limit')) > 5000:
limit_input = '5000'
else:
limit_input = form.getvalue('limit')
except:
limit_input = '5000'
else:
limit_input = '5000'
# All right, now let's pick a host and domain
try:
db_props = choose_host_and_domain(db)
host = db_props['host']
domain = db_props['domain']
except:
host = None
domain = None
namespace_names = get_namespace_names(db)
print """\
Content-Type: text/html;charset=utf-8\n
<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>yanker</title>
<link rel="stylesheet" href="../style-yanker.css?3" type="text/css" />
</head>
<body>
<div class="header" id="main-title"><a href="/~mzmcbride/yanker/" title="yanker">yanker</a></div>"""
if form.getvalue('list') is None:
print """\
<form action="/~mzmcbride/yanker/" method="get">
<table id="input" class="inner-table">
<tr>
<th colspan="3" class="header">Make your choices.</th>
</tr>
<tr>
<td class="bold">Database</td>
<td>
<select id="database" name="db" style="width:100%;">"""
for i in database_list():
if i == '%s' % db:
print """\
<option value="%s" selected="selected">%s</option>""" % (i, i)
else:
print """\
<option value="%s">%s</option>""" % (i, i)
print """\
</select>
</td>
<td>
<input id="go-button" type="submit" value="Go" style="margin:0;" />
</td>
</tr>
<tr>
<td class="bold">
List
</td>
<td colspan="2">
<select id="list" name="list" style="width:100%%;">
<option value="">Select one</option>
<option value="pages">Pages in a category</option>
<option value="pages">Page titles matching a particular pattern</option>
<option value="loldongs">loldongs</option>
</select>
</td>
</tr>
<tr>
<td class="bold">
%s
</td>
<td colspan="2">
<input class="text-input" id="category" type="text" name="category" />
</td>
</tr>
<tr>
<td class="bold">
Page
</td>
<td colspan="2">
<input class="text-input" id="page" type="text" name="page" value="" />
</td>
</tr>
<tr>
<td class="bold">
Pattern
</td>
<td colspan="2">
<input class="text-input" id="pattern" type="text" name="pattern" value="" />
</td>
</tr>
<tr>
<td class="bold">
Namespaces
</td>
<td colspan="2">
<table style="border:none; font-size:inherit;">""" % (namespace_names[14].encode('utf-8'))
count = 0
for k,v in sorted(namespace_names.iteritems(), key=operator.itemgetter(0)):
if count % 2 == 0:
print '<tr style="border:none;">'
if v == '':
v = '(Main)'
print """\
<td style="border:none;"><input id="ns%s" type="checkbox" name="namespace" value="%s" /></td>
<td style="border:none;"><label for="ns%s">%s</label></td>""" % (k, k, k, v.encode('utf-8'))
if count % 2 != 0:
print '</tr>'
count += 1
print """\
</table>
</td>
</tr>
<tr>
<td class="bold">
Limit
</td>
<td colspan="2">
<input class="text-input" id="limit" type="text" name="limit" value="%s" />
</td>
</tr>
<tr>
<td class="bold">
Sort
</td>
<td colspan="2">
<select id="sort" name="sort" style="width:100%%;">
<option value="">None</option>
<option value="asc">Ascending (A→Z)</option>
<option value="desc">Descending (Z→A)</option>
</select>
</td>
</tr>
<tr>
<td class="bold">
Line wrapper
</td>
<td colspan="2">
<input class="text-input" id="wrapper" type="text" name="wrapper" value="$1" />
</td>
</tr>
</table>
</form>""" % limit_input
elif form.getvalue('list') in ('pages', 'files', 'categories', 'links', 'templates', 'externallinks'):
target_column = 'page_title'
# Sort order
if form.getvalue('sort') == 'asc':
sort_query_input = 'ORDER BY %s ASC' % target_column
elif form.getvalue('sort') == 'desc':
sort_query_input = 'ORDER BY %s DESC' % target_column
else:
sort_query_input = ''
# Limits
try:
if int(form.getvalue('limit')) > 5000:
limit_query_input = 'LIMIT 5000'
elif int(form.getvalue('limit')) > 0:
limit_query_input = 'LIMIT %s' % int(form.getvalue('limit'))
else:
limit_query_input = 'LIMIT 5000'
except:
limit_query_input = 'LIMIT 5000'
# Line wrapper
try:
wrapper_input = form.getvalue('wrapper').decode('utf-8')
except:
wrapper_input = '$1'
# Underscores or spaces in results?
if form.getvalue('prettify') == '1':
prettify_status = True
else:
prettify_status = False
# Namespaces!
try:
if form['namespace'] is not None:
namespace_input = 'AND page_namespace IN (%s)' % (','.join(str(int(x)) for x in form.getlist('namespace')))
else:
namespace_input = ''
except:
namespace_input = ''
if form.getvalue('list') == 'pages' and form.getvalue('category'):
category_input = underscore(form['category'].value)
target_column = 'page_title'
results = []
conn = MySQLdb.connect(host=host,
db=db,
read_default_file='/home/mzmcbride/.my.cnf')
cursor = conn.cursor()
query = '''
/* yanker.py &list=pages&category= */
SELECT
page_namespace,
page_title
FROM page
JOIN categorylinks
ON cl_from = page_id
WHERE cl_to = '%s'
%s
%s
%s;
''' % (MySQLdb.escape_string(category_input),
MySQLdb.escape_string(namespace_input),
sort_query_input,
limit_query_input)
cursor.execute(query)
for row in cursor.fetchall():
page_namespace = namespace_names[row[0]].encode('utf-8')
page_title = unicode(row[1], 'utf-8')
if row[0] in (6,14):
full_page_title = ':%s:%s' % (page_namespace, page_title)
elif row[0] == 0:
full_page_title = '%s' % (page_title)
else:
full_page_title = '%s:%s' % (page_namespace, page_title)
if prettify_status:
full_page_title = prettify(full_page_title)
re_row = re.sub('\$1', full_page_title, wrapper_input)
results.append(re_row)
cursor.close()
conn.close()
elif form.getvalue('list') == 'pages' and form.getvalue('pattern'):
pattern_input = underscore(form['pattern'].value)
target_column = 'page_title'
results = []
conn = MySQLdb.connect(host=host,
db=db,
read_default_file='/home/mzmcbride/.my.cnf')
cursor = conn.cursor()
query = '''
/* yanker.py &list=pages&pattern= */
SELECT
page_namespace,
page_title
FROM page
WHERE page_title RLIKE '%s'
%s
%s
%s;
''' % (MySQLdb.escape_string(pattern_input),
MySQLdb.escape_string(namespace_input),
sort_query_input,
limit_query_input)
cursor.execute(query)
for row in cursor.fetchall():
page_namespace = namespace_names[row[0]].encode('utf-8')
page_title = unicode(row[1], 'utf-8')
if row[0] in (6,14):
full_page_title = ':%s:%s' % (page_namespace, page_title)
elif row[0] == 0:
full_page_title = '%s' % (page_title)
else:
full_page_title = '%s:%s' % (page_namespace, page_title)
if prettify_status:
full_page_title = prettify(full_page_title)
re_row = re.sub('\$1', full_page_title, wrapper_input)
results.append(re_row)
cursor.close()
conn.close()
final_results = '\n'.join(results).encode('utf-8')
print """\
<textarea id="results" style="font-size:1em; width:100%%; overflow:auto; height:500px;">
%s
</textarea>""" % (cgi.escape(final_results, quote=True))
elif form.getvalue('list') == 'loldongs':
print """\
<div style="text-align:center; padding:5px; font-size:4em;">loldongs</div>"""
elif host is None:
print """\
<pre>
You didn't specify an appropriate database name.
</pre>"""
print """\
<div id="footer">
<div id="meta-info">public domain <b>·</b> \
<a href="//en.wikipedia.org/w/index.php?title=User_talk:MZMcBride/yanker&action=edit&section=new" title="Report a bug">bugs</a>
</div>
</div>
</body>
</html>"""