PHP to HTML to PDF, BOOM!

Gruntfile.js

// http://downloads.sourceforge.net/project/wkhtmltopdf/0.12.1/wkhtmltox-0.12.1_osx-carbon-i386.pkg

// Requires a hacked grunt-wkhtmltopdf/tasks/wkhtmltopdf.js file (attached to this gist)

module.exports = function(grunt)
{
    grunt.initConfig(
    {
        shell: {
            php2html: {
                command: 'php index.php > index.html'
            }
        },
        watch: {
            files: ['index.php'],
            tasks: ['shell', 'wkhtmltopdf'],
        },
        wkhtmltopdf: {
            dev: {
                args: [
                    '-O', 'Landscape',
                    '-s', 'Letter',
                    '-T', 0,
                    '-R', 0,
                    '-B', 0,
                    '-L', 0
                ],
                src: 'index.html',
                dest: './'
            }
        }
    });

    grunt.loadNpmTasks('grunt-contrib-watch');
    grunt.loadNpmTasks('grunt-shell');
    grunt.loadNpmTasks('grunt-wkhtmltopdf');

    grunt.registerTask('default', ['shell', 'wkhtmltopdf']);
};

wkhtmltopdf.js

/*
 * grunt-wkhtmltopdf
 * https://github.com/dhar/grunt-wkhtmltopdf
 *
 * Copyright (c) 2012 Olivier Audard
 * Licensed under the MIT license.
 */
/*globals module:false, require:false*/
module.exports = function(grunt) {

  // Please see the grunt documentation for more information regarding task and
  // helper creation: https://github.com/cowboy/grunt/blob/master/docs/toc.md

  // ==========================================================================
  // TASKS
  // ==========================================================================
  var helper = require('./lib/wkhtmltopdf-lib').init(grunt);

  grunt.registerMultiTask('wkhtmltopdf', 'Your task description goes here.', function() {

    this.files.forEach(function(file) {

      var pathlib = require('path');
      // calculate the destination directory and ensure it exists, since
      // wkhtmltopdf won't create the PDF if the destination directory doesn't
      // exist
      var destPath = file.dest;
      if (grunt.file.isFile(file.dest)) {
        destPath = pathlib.dirname(file.dest);
      }
      grunt.file.mkdir(destPath);

      file.src.forEach(function(src) {

        var dest = file.dest;
        // wkhtmltopdf seems to require that the destination be a file
        // location, not a directory, so if the given destination is a
        // directory then append the name of the source file but with the
        // extension changed to .pdf
        if (grunt.file.isDir(dest)) {
          var srcFileName = pathlib.basename(src);
          var srcFileExtension = pathlib.extname(src);
          var destFileName = srcFileName.replace(
            new RegExp(srcFileExtension + "$"), // match only the end of the string
            ".pdf"
          );
          dest = pathlib.join(destPath + destFileName);
        }

        grunt.log.writeln(
          "Converting " + src + " -> " + dest
        );

        // default args
        var args = [
          '--dpi', '96',        // workarround to wkhtmltopdf letter-spacing bug (see http://code.google.com/p/wkhtmltopdf/issues/detail?id=72)
          '--print-media-type', // Use @print media type
        ];

        // overrides the args
        if (file.args) {
          args = file.args;
        }

        // adds the src and dest
        args = args.concat([src, dest]);

        // Launch wkhtmltopdf.
        helper.convert({
          code: 90,
          args: args,
          done: function(err) {
            if (err) {
              grunt.log('>>>', err);
            }
          }
        });
      });
    });
  });
};