gulp-image-data-uri/index.js

Converts images to inline data URIs

var DataURI, PluginError, gutil, path, pluginName, through;

through = require('through2');

path = require('path');

DataURI = require('datauri.template');

gutil = require('gulp-util');

PluginError = gutil.PluginError;

pluginName = 'gulp-image-data-uri';

module.exports = function(options) {
  if (options == null) {
    options = {};
  }
  return through.obj(function(file, enc, cb) {
    var basename, className, dataURI, dataURIArgs, fileContents, ref, ref1, variables;
    if (file.isNull() || !file.contents.toString().length) {
      cb(null, file);
      return;
    }
    if (file.isStream()) {
      cb(new PluginError(pluginName, 'Streaming not supported'));
      return;
    }
    dataURI = new DataURI();
    dataURI.format(path.basename(file.path), file.contents);
    basename = path.basename(file.path, path.extname(file.path));
    className = basename;
    if (options.customClass != null) {
      className = options.customClass(className, file);
    }
    if (((ref = options.template) != null ? ref.file : void 0) != null) {
      if (options.template.adapter != null) {
        dataURI.templateAdapter = options.template.adapter;
      }
      dataURIArgs = [options.template.file];
      if ((options.template.adapter == null) && (options.template.engine != null)) {
        dataURIArgs.push(options.template.engine);
      }
      variables = (ref1 = options.template.variables) != null ? ref1 : {};
      variables.className = className;
      dataURIArgs.push(variables);
      fileContents = dataURI.template.apply(dataURI, dataURIArgs);
    } else {
      fileContents = dataURI.template(path.resolve(__dirname, 'template.css'), {
        className: className
      });
    }
    file.contents = new Buffer(fileContents);
    file.path = path.join(path.dirname(file.path), basename + '.css');
    this.push(file);
    return cb();
  });
};