extractjs

Extract/interpolate strings.

Usage

Node.js and Browserify

Install from npm

npm install extractjs

 
var extractjs = require('extractjs'),
    extractor = extractjs();
 
var captured = extractor("This is a {name} library",
    "This is a extractjs library");
// > { name: 'extractjs'}
 

Template Settings

Default Settings

    var defaults = {
        startExtract: '{',
        endExtract: '}',
        extractors: { /* capture functions */ }
        initValue: void 0
    }

Templates can be redefined as below:

var extractjs = require('extractjs'),
    settings = { startExtract: '[[', endExtract: ']]'}
    extractor = extractjs(settings);
 
var captured = extractor("This is [[name]], [[age]] years old", 
    "This is John, 26 years old");
// > { name: 'John', age: 26 } <-- age is no longer string
 
// Settings can be overridden at the time of extraction
var date = extractor("Date is |date|/|month|/|year|", "Date is 26/04/2015",
    { startExtract: '|', endExtract: '|'})
// > { date: 26, month: 4, year: 2015 }

Its possible to build a pattern before extract/interpolate data.

var extractjs = require('extractjs'),
    extractor = extractjs();
 
var loginPattern = extractor("You are logged in as {name}.");
 
var name = loginPattern.extract('You are logged in as John. Last login: Today')
    .name;
// > John
 
var output = loginPattern.interpolate({name: 'John'});
//> You are loggin in as John.

extractors are used to override or manipulate captured values.

var extractjs = require('extractjs'),
    settings = {
        extractors: {
            name: function(value) {
                var names = value.split(' ');
                return {
                    firstName: names[0],
                    lastName: value.substring(names[0].length).trim(),
                    fullName: value
                };
            }
        }
    },
    extractor = extractjs(settings);
 
var captured = extractor("This is {name}, {age} years old",
    "This is John Wesley, 26 years old");
// > { name: {
//      firstName: 'John',
//      lastName: 'Wesley',
//      fullName: 'John Wesley'
//     }, age: 26 }

Web page

Access from window/global as extractjs.

License

This plugin is licensed under the MIT license.

Copyright (c) 2015 Prince John Wesley