lib/output/modifiers/inlinePng.js
function inlinePng(rootFolder, currentFile, $) {
    var currentDirectory = path.dirname(currentFile);

    return editHTMLElement($, 'img', function($img) {
        var src = $img.attr('src');
        if (!LocationUtils.isDataURI(src)) {
            return;
        }

        // We avoid generating twice the same PNG
        var hash = crc.crc32(src).toString(16);
        var fileName = hash + '.png';

        // Result file path
        var filePath = path.join(rootFolder, fileName);

        return fs.assertFile(filePath, function() {
            return imagesUtil.convertInlinePNG(src, filePath);
        })
        .then(function() {
            // Convert filename to a relative filename
            fileName = LocationUtils.relative(currentDirectory, fileName);

            // Replace src
            $img.attr('src', fileName);
        });
    });
}
function inlinePng(rootFolder, currentFile, $) {
    var currentDirectory = path.dirname(currentFile);

    return editHTMLElement($, 'img', function($img) {
        var src = $img.attr('src');
        if (!LocationUtils.isDataURI(src)) {
            return;
        }

        // We avoid generating twice the same PNG
        var hash = crc.crc32(src).toString(16);
        var fileName = hash + '.png';

        // Result file path
        var filePath = path.join(rootFolder, fileName);

        return fs.assertFile(filePath, function() {
            return imagesUtil.convertInlinePNG(src, filePath);
        })
        .then(function() {
            // Convert filename to a relative filename
            fileName = LocationUtils.relative(currentDirectory, fileName);

            // Replace src
            $img.attr('src', fileName);
        });
    });
}
function inlinePng ( rootFolder , currentFile , $ ) { var currentDirectory = path . dirname ( currentFile ) ; return editHTMLElement ( $ , 'img' , function ( $img ) { var src = $img . attr ( 'src' ) ; if ( ! LocationUtils . isDataURI ( src ) ) { return ; } // We avoid generating twice the same PNG var hash = crc . crc32 ( src ) . toString ( 16 ) ; var fileName = hash + '.png' ; // Result file path var filePath = path . join ( rootFolder , fileName ) ; return fs . assertFile ( filePath , function ( ) { return imagesUtil . convertInlinePNG ( src , filePath ) ; } ) . then ( function ( ) { // Convert filename to a relative filename fileName = LocationUtils . relative ( currentDirectory , fileName ) ; // Replace src $img . attr ( 'src' , fileName ) ; } ) ; } ) ; }
Convert all inline PNG images to PNG file

@param {String} rootFolder
@param {HTMLDom} $
@return {Promise}
Convert all inline PNG images to PNG file