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(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 = {
'3.9': 'dev (3.9)',
'3.8': '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',
'ko': 'Korean',
'zh-cn': 'Simplified Chinese',
};
function build_version_select(current_version, current_release) {
var buf = ['<select>'];
$.each(all_versions, function(version, title) {
buf.push('<option value="' + version + '"');
if (version == current_version)
buf.push(' selected="selected">' + current_release + '</option>');
else
buf.push('>' + title + '</option>');
});
buf.push('</select>');
return buf.join('');
}
function build_language_select(current_language) {
var buf = ['<select>'];
$.each(all_languages, function(language, title) {
if (language == current_language)
buf.push('<option value="' + language + '" selected="selected">' +
all_languages[current_language] + '</option>');
else
buf.push('<option value="' + language + '">' + title + '</option>');
});
if (!(current_language in all_languages)) {
// In case we're browsing a language that is not yet in all_languages.
buf.push('<option value="' + current_language + '" selected="selected">' +
current_language + '</option>');
all_languages[current_language] = current_language;
}
buf.push('</select>');
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);
});
})();
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