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#!/usr/bin/env node
// Add Platform Class
// v1.0
// Automatically adds the platform class to the body tag
// after the `prepare` command. By placing the platform CSS classes
// directly in the HTML built for the platform, it speeds up
// rendering the correct layout/style for the specific platform
// instead of waiting for the JS to figure out the correct classes.
var fs = require('fs');
var path = require('path');
var rootdir = process.argv[2];
function addPlatformBodyTag(indexPath, platform) {
// add the platform class to the body tag
try {
var platformClass = 'platform-' + platform;
var cordovaClass = 'platform-cordova platform-webview';
var html = fs.readFileSync(indexPath, 'utf8');
var bodyTag = findBodyTag(html);
if(!bodyTag) return; // no opening body tag, something's wrong
if(bodyTag.indexOf(platformClass) > -1) return; // already added
var newBodyTag = bodyTag;
var classAttr = findClassAttr(bodyTag);
if(classAttr) {
// body tag has existing class attribute, add the classname
var endingQuote = classAttr.substring(classAttr.length-1);
var newClassAttr = classAttr.substring(0, classAttr.length-1);
newClassAttr += ' ' + platformClass + ' ' + cordovaClass + endingQuote;
newBodyTag = bodyTag.replace(classAttr, newClassAttr);
} else {
// add class attribute to the body tag
newBodyTag = bodyTag.replace('>', ' class="' + platformClass + ' ' + cordovaClass + '">');
}
html = html.replace(bodyTag, newBodyTag);
fs.writeFileSync(indexPath, html, 'utf8');
process.stdout.write('add to body class: ' + platformClass + '\n');
} catch(e) {
process.stdout.write(e);
}
}
function findBodyTag(html) {
// get the body tag
try{
return html.match(/<body(?=[\s>])(.*?)>/gi)[0];
}catch(e){}
}
function findClassAttr(bodyTag) {
// get the body tag's class attribute
try{
return bodyTag.match(/ class=["|'](.*?)["|']/gi)[0];
}catch(e){}
}
if (rootdir) {
// go through each of the platform directories that have been prepared
var platforms = (process.env.CORDOVA_PLATFORMS ? process.env.CORDOVA_PLATFORMS.split(',') : []);
for(var x=0; x<platforms.length; x++) {
// open up the index.html file at the www root
try {
var platform = platforms[x].trim().toLowerCase();
var indexPath;
if(platform == 'android') {
indexPath = path.join('platforms', platform, 'assets', 'www', 'index.html');
} else {
indexPath = path.join('platforms', platform, 'www', 'index.html');
}
if(fs.existsSync(indexPath)) {
addPlatformBodyTag(indexPath, platform);
}
} catch(e) {
process.stdout.write(e);
}
}
}