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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright 2014 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Build wiki page with a list of all samples.
The information for the wiki page is built from data found in all the README
files in the samples. The format of the README file is:
Description is everything up to the first blank line.
api: plus (Used to look up the long name in discovery).
keywords: appengine (such as appengine, oauth2, cmdline)
The rest of the file is ignored when it comes to building the index.
"""
from __future__ import print_function
import httplib2
import itertools
import json
import os
import re
BASE_HG_URI = ('http://code.google.com/p/google-api-python-client/source/'
'browse/#hg')
http = httplib2.Http('.cache')
r, c = http.request('https://www.googleapis.com/discovery/v1/apis')
if r.status != 200:
raise ValueError('Received non-200 response when retrieving Discovery.')
# Dictionary mapping api names to their discovery description.
DIRECTORY = {}
for item in json.loads(c)['items']:
if item['preferred']:
DIRECTORY[item['name']] = item
# A list of valid keywords. Should not be taken as complete, add to
# this list as needed.
KEYWORDS = {
'appengine': 'Google App Engine',
'oauth2': 'OAuth 2.0',
'cmdline': 'Command-line',
'django': 'Django',
'threading': 'Threading',
'pagination': 'Pagination',
'media': 'Media Upload and Download'
}
def get_lines(name, lines):
"""Return lines that begin with name.
Lines are expected to look like:
name: space separated values
Args:
name: string, parameter name.
lines: iterable of string, lines in the file.
Returns:
List of values in the lines that match.
"""
retval = []
matches = itertools.ifilter(lambda x: x.startswith(name + ':'), lines)
for line in matches:
retval.extend(line[len(name)+1:].split())
return retval
def wiki_escape(s):
"""Detect WikiSyntax (i.e. InterCaps, a.k.a. CamelCase) and escape it."""
ret = []
for word in s.split():
if re.match(r'[A-Z]+[a-z]+[A-Z]', word):
word = '!%s' % word
ret.append(word)
return ' '.join(ret)
def context_from_sample(api, keywords, dirname, desc, uri):
"""Return info for expanding a sample into a template.
Args:
api: string, name of api.
keywords: list of string, list of keywords for the given api.
dirname: string, directory name of the sample.
desc: string, long description of the sample.
uri: string, uri of the sample code if provided in the README.
Returns:
A dictionary of values useful for template expansion.
"""
if uri is None:
uri = BASE_HG_URI + dirname.replace('/', '%2F')
else:
uri = ''.join(uri)
if api is None:
return None
else:
entry = DIRECTORY[api]
context = {
'api': api,
'version': entry['version'],
'api_name': wiki_escape(entry.get('title', entry.get('description'))),
'api_desc': wiki_escape(entry['description']),
'api_icon': entry['icons']['x32'],
'keywords': keywords,
'dir': dirname,
'uri': uri,
'desc': wiki_escape(desc),
}
return context
def keyword_context_from_sample(keywords, dirname, desc, uri):
"""Return info for expanding a sample into a template.
Sample may not be about a specific api.
Args:
keywords: list of string, list of keywords for the given api.
dirname: string, directory name of the sample.
desc: string, long description of the sample.
uri: string, uri of the sample code if provided in the README.
Returns:
A dictionary of values useful for template expansion.
"""
if uri is None:
uri = BASE_HG_URI + dirname.replace('/', '%2F')
else:
uri = ''.join(uri)
context = {
'keywords': keywords,
'dir': dirname,
'uri': uri,
'desc': wiki_escape(desc),
}
return context
def scan_readme_files(dirname):
"""Scans all subdirs of dirname for README files.
Args:
dirname: string, name of directory to walk.
Returns:
(samples, keyword_set): list of information about all samples, the union
of all keywords found.
"""
samples = []
keyword_set = set()
for root, dirs, files in os.walk(dirname):
if 'README' in files:
filename = os.path.join(root, 'README')
with open(filename, 'r') as f:
content = f.read()
lines = content.splitlines()
desc = ' '.join(itertools.takewhile(lambda x: x, lines))
api = get_lines('api', lines)
keywords = get_lines('keywords', lines)
uri = get_lines('uri', lines)
if not uri:
uri = None
for k in keywords:
if k not in KEYWORDS:
raise ValueError(
'%s is not a valid keyword in file %s' % (k, filename))
keyword_set.update(keywords)
if not api:
api = [None]
samples.append((api[0], keywords, root[1:], desc, uri))
samples.sort()
return samples, keyword_set
def main():
# Get all the information we need out of the README files in the samples.
samples, keyword_set = scan_readme_files('./samples')
# Now build a wiki page with all that information. Accumulate all the
# information as string to be concatenated when were done.
page = ['<wiki:toc max_depth="3" />\n= Samples By API =\n']
# All the samples, grouped by API.
current_api = None
for api, keywords, dirname, desc, uri in samples:
context = context_from_sample(api, keywords, dirname, desc, uri)
if context is None:
continue
if current_api != api:
page.append("""
=== %(api_icon)s %(api_name)s ===
%(api_desc)s
Documentation for the %(api_name)s in [https://google-api-client-libraries.appspot.com/documentation/%(api)s/%(version)s/python/latest/ PyDoc]
""" % context)
current_api = api
page.append('|| [%(uri)s %(dir)s] || %(desc)s ||\n' % context)
# Now group the samples by keywords.
for keyword, keyword_name in KEYWORDS.iteritems():
if keyword not in keyword_set:
continue
page.append('\n= %s Samples =\n\n' % keyword_name)
page.append('<table border=1 cellspacing=0 cellpadding=8px>\n')
for _, keywords, dirname, desc, uri in samples:
context = keyword_context_from_sample(keywords, dirname, desc, uri)
if keyword not in keywords:
continue
page.append("""
<tr>
<td>[%(uri)s %(dir)s] </td>
<td> %(desc)s </td>
</tr>""" % context)
page.append('</table>\n')
print(''.join(page))
if __name__ == '__main__':
main()