#!/usr/bin/php
<?php
/**
 * DOMPDF - PHP5 HTML to PDF renderer
 *
 * File: $RCSfile: load_font.php,v $
 * Created on: 2004-06-23
 *
 * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library in the file LICENSE.LGPL; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * Alternatively, you may distribute this software under the terms of the
 * PHP License, version 3.0 or later.  A copy of this license should have
 * been distributed with this file in the file LICENSE.PHP .  If this is not
 * the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
 *
 * The latest version of DOMPDF might be available at:
 * http://www.dompdf.com/
 *
 * @link http://www.dompdf.com/
 * @copyright 2004 Benj Carson
 * @author Benj Carson <benjcarson@digitaljunkies.ca>
 * @package dompdf

 */

require_once(dirname(__FILE__) . '/../../dompdf_config.inc.php');

/**
 * @access private
 */
define("_TTF2AFM", escapeshellarg(TTF2AFM) . " -a -GAef -OW ");

if ( !file_exists(TTF2AFM) ) {
  die("Unable to locate the ttf2afm / ttf2pt1 executable (checked " . TTF2AFM . ").\n");
}


/**
 * Display command line usage
 *
 */
function usage() {

  echo <<<EOD

Usage: {$_SERVER["argv"][0]} font_family [n_file [b_file] [i_file] [bi_file]]

font_family:      the name of the font, e.g. Verdana, 'Times New Roman',
                  monospace, sans-serif. If it equals to "system_fonts", 
                  all the system fonts will be installed.

n_file:           the .pfb or .ttf file for the normal, non-bold, non-italic
                  face of the font.

{b|i|bi}_file:    the files for each of the respective (bold, italic,
                  bold-italic) faces.

If the optional b|i|bi files are not specified, load_font.php will search
the directory containing normal font file (n_file) for additional files that
it thinks might be the correct ones (e.g. that end in _Bold or b or B).  If
it finds the files they will also be processed.  All files will be
automatically copied to the DOMPDF font directory, and afm files will be
generated using ttf2afm.

Examples:

./load_font.php silkscreen /usr/share/fonts/truetype/slkscr.ttf
./load_font.php 'Times New Roman' /mnt/c_drive/WINDOWS/Fonts/times.ttf

EOD;

}

if ( $_SERVER["argc"] < 3 && $_SERVER["argv"][1] != "system_fonts" ) {
  usage();
  die();
}

/**
 * Installs a new font family
 *
 * This function maps a font-family name to a font.  It tries to locate the
 * bold, italic, and bold italic versions of the font as well.  Once the
 * files are located, ttf versions of the font are copied to the fonts
 * directory.  Changes to the font lookup table are saved to the cache.
 *
 * @param string $fontname the font-family name
 * @param string $normal the filename of the normal face font subtype
 * @param string $bold   the filename of the bold face font subtype
 * @param string $italic the filename of the italic face font subtype
 * @param string $bold_italic the filename of the bold italic face font subtype
 */
function install_font_family($fontname, $normal, $bold = null, $italic = null, $bold_italic = null) {

  // Check if the base filename is readable
  if ( !is_readable($normal) )
    throw new DOMPDF_Exception("Unable to read '$normal'.");

  $dir = dirname($normal);
  $basename = basename($normal);
  $last_dot = strrpos($basename, '.');
  if ($last_dot !== false) {
    $file = substr($basename, 0, $last_dot);
    $ext = strtolower(substr($basename, $last_dot));
  } else {
    $file = $basename;
    $ext = '';
  }

  // Try $file_Bold.$ext etc.
  $path = "$dir/$file";
  
  $patterns = array(
    "bold"        => array("_Bold", "b", "B", "bd", "BD"),
    "italic"      => array("_Italic", "i", "I"),
    "bold_italic" => array("_Bold_Italic", "bi", "BI", "ib", "IB"),
  );
  
  foreach ($patterns as $type => $_patterns) {
    if ( !isset($$type) || !is_readable($$type) ) {
      foreach($_patterns as $_pattern) {
        if ( is_readable("$path$_pattern$ext") ) {
          $$type = "$path$_pattern$ext";
          break;
        }
      }
      if ( is_null($$type) )
        echo ("Unable to find $type face file.\n");
    }
  }

  $fonts = compact("normal", "bold", "italic", "bold_italic");
  $entry = array();

  if ( $ext === ".pfb" || $ext === ".ttf" || $ext === ".otf" ) {

    // Copy the files to the font directory.
    foreach ($fonts as $var => $src) {
      if ( is_null($src) ) {
        $entry[$var] = DOMPDF_FONT_DIR . basename($normal);
        continue;
      }

      // Verify that the fonts exist and are readable
      if ( !is_readable($src) )
        throw new DOMPDF_Exception("Requested font '$pathname' is not readable");

      $dest = DOMPDF_FONT_DIR . basename($src);
      if ( !is_writeable(dirname($dest)) )
        throw new DOMPDF_Exception("Unable to write to destination '$dest'.");

      echo "Copying $src to $dest...\n";

      if ( !copy($src, $dest) )
        throw new DOMPDF_Exception("Unable to copy '$src' to '" . DOMPDF_FONT_DIR . "$dest'.");

      $entry[$var] = $dest;
    }

  } else
    throw new DOMPDF_Exception("Unable to process fonts of type '$ext'.");


  // If the extension is a ttf, try and convert the fonts to afm too
  if ( $ext === ".ttf" || $ext === ".otf" ) {
    foreach ($fonts as $var => $font) {
      if ( is_null($font) ) {
        $entry[$var] = DOMPDF_FONT_DIR . mb_substr(basename($normal), 0, -4);
        continue;
      }
      
      $dest = DOMPDF_FONT_DIR . mb_substr(basename($font), 0 , -4);
      $stdout = ( ( strpos(PHP_OS, "WIN") === false ) ? " >/dev/null" : " 2>&1" );
      $command = _TTF2AFM . " " . escapeshellarg($font) . " " . escapeshellarg($dest) . $stdout;
      echo "Generating .afm for $font...\n";
      //echo $command . "\n";
      exec( $command, $output, $ret );

      $entry[$var] = $dest;
    }
  }

  // FIXME: how to generate afms from pfb?

  // Store the fonts in the lookup table
  Font_Metrics::set_font_family($fontname, $entry);

  // Save the changes
  Font_Metrics::save_font_families();
}

// If installing system fonts (may take a long time)
if ( $_SERVER["argv"][1] === "system_fonts" ) {
  $fonts = Font_Metrics::get_system_fonts();
  var_dump($fonts);
  foreach ( $fonts as $family => $files ) {
    echo " >> Installing '$family'... \n";
    
    if ( !isset($files["normal"]) ) {
      echo "No 'normal' style font file\n";
    }
    else {
      install_font_family( $family, @$files["normal"], @$files["bold"], @$files["italic"], @$files["bold_italic"]);
      echo "Done !\n";
    }
    
    echo "\n";
  }
}
else {
  call_user_func_array("install_font_family", array_slice($_SERVER["argv"], 1));
}