iconutil/index.js

Convert between PNG/Iconsets and .ICNS files

var fs = require('fs');
var uuid = require('uuid');
var exec = require('child_process').exec;

var TEMP_PATH = __dirname + '/tmp/';

var rmdir = function(path) {
    fs.readdir(path, function(err, files) {
        if(err)
            return;
        var unlinked = 0;
        files.forEach(function(file) {
            fs.unlink(path + '/' + file, function(err, data) {
                unlinked++;

                if(unlinked == files.length) {
                    fs.rmdir(path, function() {});
                }
            });
        });
    });
};

module.exports.toIconset = function(file, cb) {
    var id = uuid.v1();

    var outpath = TEMP_PATH + id + '.iconset';

    exec('iconutil --convert iconset "' + file + '" --output "' + outpath + '"', function(err, stdout) {
        if(err) {
            cb('No ICNS file found!', undefined);
            return;
        }

        fs.readdir(outpath, function(err, files) {
            if(err) {
                cb('An error occured while reading the iconset.');
                return;
            }

            var readfiles = {};

            files.forEach(function(file) {
                fs.readFile(outpath + '/' + file, function(err, data) {
                    readfiles[file] = data;

                    if(Object.keys(readfiles).length == files.length) {
                        cb(undefined, readfiles);
                        rmdir(outpath);
                    }
                });
            });
        });
    });
};

module.exports.toICNS = function(file, cb) {
    var id = uuid.v1();

    var outpath = TEMP_PATH + id + '.icns';

    exec('iconutil --convert icns "' + file + '" --output "' + outpath + '"', function(err, stdout) {
        if(err) {
            cb('No iconset folder found!', undefined);
            return;
        }

        fs.readFile(outpath, function(err, data) {
            if(err) {
                cb(err, undefined);
                return;
            }

            cb(data);
            fs.unlink(outpath);
        });
    });
};