adding first version of plugins_index script

--HG--
branch : plugins-index

doc/en/plugins_index.py

@@ -0,0 +1,120 @@
+from collections import namedtuple
+from distutils.version import LooseVersion
+import itertools
+import os
+import sys
+import xmlrpclib
+
+
+#===================================================================================================
+# iter_pypi_plugins
+#===================================================================================================
+def iter_pypi_plugins(client):
+    for plug_data in client.search({'name' : 'pytest-'}):
+        yield plug_data['name'], plug_data['version']
+
+
+#===================================================================================================
+# get_latest_versions
+#===================================================================================================
+def get_latest_versions(plugins):
+    plugins = [(name, LooseVersion(version)) for (name, version) in plugins]
+    for name, grouped_plugins in itertools.groupby(plugins, key=lambda x: x[0]):
+        name, loose_version = list(grouped_plugins)[-1]
+        yield name, str(loose_version)
+        
+        
+#===================================================================================================
+# obtain_plugins_table
+#===================================================================================================
+def obtain_plugins_table(plugins, client):    
+    rows = []
+    RowData = namedtuple('RowData', 'text link')
+    headers = ['Name', 'Version', 'Author', 'Summary']
+    
+    # pluginname and latest version, pypi link, maintainer/author, repository link,
+    # one-line description, test status py27/py33
+    for package_name, version in plugins:
+        release_data = client.release_data(package_name, version)
+        row = (
+            RowData(package_name, release_data['package_url']),
+            RowData(version, release_data['release_url']),
+            RowData(release_data['author'], release_data['author_email']),
+            RowData(release_data['summary'], None),
+        )
+        assert len(row) == len(headers)
+        rows.append(row)
+        
+    return headers, rows    
+
+
+#===================================================================================================
+# generate_plugins_index_from_table
+#===================================================================================================
+def generate_plugins_index_from_table(headers, rows, basename):
+        
+    def get_row_limiter(char):
+        return ' '.join(char * length for length in column_lengths)
+    
+    def ref(s, link):
+        return s + '_' if link else s
+    
+    table_texts = []
+    for row in rows:
+        row_texts = []
+        for i, row_data in enumerate(row): 
+            text = '`%s <%s>`_' % (row_data.text, row_data.link) if row_data.link else row_data.text
+            row_texts.append(text)
+        table_texts.append(row_texts)
+        
+    column_lengths = [len(x) for x in headers]
+    for row_texts in table_texts:
+        for i, row_text in enumerate(row_texts):
+            column_lengths[i] = max(column_lengths[i], len(row_text) + 2)
+    
+    with file(basename, 'w') as f:
+        print >> f, '.. _plugins_index:'
+        print >> f
+        print >> f, 'List of Third-Party Plugins'
+        print >> f, '==========================='
+        print >> f
+        print >> f
+        print >> f, get_row_limiter('=')
+        for i, header in enumerate(headers):
+            print >> f, '{:^{fill}}'.format(header, fill=column_lengths[i]),
+        print >> f
+        print >> f, get_row_limiter('=')
+        
+        for row_texts in table_texts:
+            for i, row_text in enumerate(row_texts):
+                print >> f, '{:^{fill}}'.format(row_text, fill=column_lengths[i]),
+            print >> f
+        print >> f
+        print >> f, get_row_limiter('=')
+        print >> f
+
+
+#===================================================================================================
+# generate_plugins_index
+#===================================================================================================
+def generate_plugins_index(client, basename):
+    plugins = get_latest_versions(iter_pypi_plugins(client))
+    headers, rows = obtain_plugins_table(plugins, client)
+    generate_plugins_index_from_table(headers, rows, basename)
+    
+
+#===================================================================================================
+# main
+#===================================================================================================
+def main(argv):
+    client = xmlrpclib.ServerProxy('http://pypi.python.org/pypi')
+    basename = os.path.join(os.path.dirname(__file__), 'plugins_index.txt')
+    generate_plugins_index(client, basename)
+    print 'OK'
+    return 0
+
+#===================================================================================================
+# main
+#===================================================================================================
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))