(function() { 'use strict'; // Parses versions in URL segments like: // "3", "dev", "release/2.7" or "3.6rc2" var version_regexs = [ '(?:\\d)', '(?:\\d\\.\\d[\\w\\d\\.]*)', '(?:dev)', '(?:release/\\d.\\d[\\x\\d\\.]*)']; var all_versions = { '3.8': 'dev (3.8)', '3.7': '3.7', '3.6': '3.6', '3.5': '3.5', '2.7': '2.7', }; var all_languages = { 'en': 'English', 'fr': 'French', 'ja': 'Japanese', }; function build_version_select(current_version, current_release) { var buf = [''); return buf.join(''); } function build_language_select(current_language) { var buf = [''); return buf.join(''); } function navigate_to_first_existing(urls) { // Navigate to the first existing URL in urls. var url = urls.shift(); if (urls.length == 0) { window.location.href = url; return; } $.ajax({ url: url, success: function() { window.location.href = url; }, error: function() { navigate_to_first_existing(urls); } }); } function on_version_switch() { var selected_version = $(this).children('option:selected').attr('value') + '/'; var url = window.location.href; var current_language = language_segment_from_url(url); var current_version = version_segment_in_url(url); var new_url = url.replace('.org/' + current_language + current_version, '.org/' + current_language + selected_version); if (new_url != url) { navigate_to_first_existing([ new_url, url.replace('.org/' + current_language + current_version, '.org/' + selected_version), 'https://docs.python.org/' + current_language + selected_version, 'https://docs.python.org/' + selected_version, 'https://docs.python.org/' ]); } } function on_language_switch() { var selected_language = $(this).children('option:selected').attr('value') + '/'; var url = window.location.href; var current_language = language_segment_from_url(url); var current_version = version_segment_in_url(url); if (selected_language == 'en/') // Special 'default' case for english. selected_language = ''; var new_url = url.replace('.org/' + current_language + current_version, '.org/' + selected_language + current_version); if (new_url != url) { navigate_to_first_existing([ new_url, 'https://docs.python.org/' ]); } } // Returns the path segment of the language as a string, like 'fr/' // or '' if not found. function language_segment_from_url(url) { var language_regexp = '\.org/([a-z]{2}(?:-[a-z]{2})?/)'; var match = url.match(language_regexp); if (match !== null) return match[1]; return ''; } // Returns the path segment of the version as a string, like '3.6/' // or '' if not found. function version_segment_in_url(url) { var language_segment = '(?:[a-z]{2}(?:-[a-z]{2})?/)'; var version_segment = '(?:(?:' + version_regexs.join('|') + ')/)'; var version_regexp = '\\.org/' + language_segment + '?(' + version_segment + ')'; var match = url.match(version_regexp); if (match !== null) return match[1]; return '' } $(document).ready(function() { var release = DOCUMENTATION_OPTIONS.VERSION; var language_segment = language_segment_from_url(window.location.href); var current_language = language_segment.replace(/\/+$/g, '') || 'en'; var version = release.substr(0, 3); var version_select = build_version_select(version, release); $('.version_switcher_placeholder').html(version_select); $('.version_switcher_placeholder select').bind('change', on_version_switch); var language_select = build_language_select(current_language); $('.language_switcher_placeholder').html(language_select); $('.language_switcher_placeholder select').bind('change', on_language_switch); }); })();