LDML for Node.js

(UNICODE LOCALE DATA MARKUP LANGUAGE)

Unicode's Common Locale Data Repository (CLDR) data is stored in XML files and uses a very custom inheritance scheme. With this module you can query the data and it will do the crazy inheritance for you.

var ldml = require("ldml");
ldml.data = __dirname + "/core/common";
 
var en_US = ldml.cache.main.en_US;
var path = "/ldml/dates/calendars/calendar[@type='buddhist']/dateTimeFormats/dateTimeFormatLength[@type='full']/dateTimeFormat/pattern";
var found = en_US.query(path);
 
if(found.length){
    console.log("found:", found[0]+"");
    console.log("at", ldml.cldrChain(found[0])+"");
    console.log("in", found[0].ownerDocument.locale);
}
 
/*
found: <pattern>{1} 'at' {0}</pattern>
at /ldml/dates/calendars/calendar[@type="generic"]/dateTimeFormats/dateTimeFormatLength[@type="full"]/dateTimeFormat/pattern
in en
*/

Notice how the end result came from calendar[@type="generic"] in the en.xml file.

The full search route for this query was actually:

en_US.xml → en.xml → root.xml (found an alias) → en_US.xml → en.xml

Data files

This repo does not include the CLDR data files. You will need to download and extract core.zip.

ldml.data

After downloading the data, you need to make sure the module knows where to find it. Set the data property to the location of the /common/ directory.

ldml.cache

For better performance, the XML document are cached on first load (lazy loaded).

The cache object has a accessor for every ldml directory:

ldml.cache.main
ldml.cache.casing
ldml.cache.collation
ldml.cache.rbnf
ldml.cache.segments

Each will return an object with accessors for every locale found in that directory.

ldml.open(directory, filename)

Opens and parses an ldml file from the specified directory. Returns the XML doc.

ldml.cldrChain(xmlElement)

Returns an Array of information about the distinguished segments.

You'll probably just want to call toString() on it.

doc.query(xpath)

Give it an xpath, it'll look up the data.

License

The MIT License (MIT)

Copyright (c) 2013 William Kapke

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.