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1 <?php
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2
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3 /**
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4 +-----------------------------------------------------------------------+
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5 | This file is part of the Roundcube Webmail client |
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6 | Copyright (C) 2005-2012, The Roundcube Dev Team |
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7 | |
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8 | Licensed under the GNU General Public License version 3 or |
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9 | any later version with exceptions for skins & plugins. |
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10 | See the README file for a full license statement. |
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11 | |
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12 | PURPOSE: |
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13 | Helper class to convert Enriched to HTML format (RFC 1523, 1896) |
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14 +-----------------------------------------------------------------------+
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15 | Author: Aleksander Machniak <alec@alec.pl> |
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16 | Author: Ryo Chijiiwa (IlohaMail) |
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17 +-----------------------------------------------------------------------+
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18 */
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19
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20 /**
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21 * Class for Enriched to HTML conversion
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22 *
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23 * @package Framework
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24 * @subpackage Utils
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25 */
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26 class rcube_enriched
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27 {
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28 protected static function convert_newlines($body)
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29 {
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30 // remove single newlines, convert N newlines to N-1
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31 $body = str_replace("\r\n", "\n", $body);
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32 $len = strlen($body);
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33 $nl = 0;
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34 $out = '';
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35
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36 for ($i=0; $i<$len; $i++) {
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37 $c = $body[$i];
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38 if (ord($c) == 10)
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39 $nl++;
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40 if ($nl && ord($c) != 10)
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41 $nl = 0;
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42 if ($nl != 1)
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43 $out .= $c;
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44 else
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45 $out .= ' ';
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46 }
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47
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48 return $out;
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49 }
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50
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51 protected static function convert_formatting($body)
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52 {
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53 $replace = array(
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54 '<bold>' => '<b>', '</bold>' => '</b>',
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55 '<italic>' => '<i>', '</italic>' => '</i>',
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56 '<fixed>' => '<tt>', '</fixed>' => '</tt>',
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57 '<smaller>' => '<font size=-1>', '</smaller>'=> '</font>',
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58 '<bigger>' => '<font size=+1>', '</bigger>' => '</font>',
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59 '<underline>' => '<span style="text-decoration: underline">', '</underline>' => '</span>',
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60 '<flushleft>' => '<span style="text-align: left">', '</flushleft>' => '</span>',
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61 '<flushright>' => '<span style="text-align: right">', '</flushright>' => '</span>',
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62 '<flushboth>' => '<span style="text-align: justified">', '</flushboth>' => '</span>',
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63 '<indent>' => '<span style="padding-left: 20px">', '</indent>' => '</span>',
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64 '<indentright>' => '<span style="padding-right: 20px">', '</indentright>' => '</span>',
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65 );
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66
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67 return str_ireplace(array_keys($replace), array_values($replace), $body);
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68 }
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69
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70 protected static function convert_font($body)
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71 {
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72 $pattern = '/(.*)\<fontfamily\>\<param\>(.*)\<\/param\>(.*)\<\/fontfamily\>(.*)/ims';
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73
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74 while (preg_match($pattern, $body, $a)) {
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75 if (count($a) != 5)
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76 continue;
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77
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78 $body = $a[1].'<span style="font-family: '.$a[2].'">'.$a[3].'</span>'.$a[4];
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79 }
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80
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81 return $body;
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82 }
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83
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84 protected static function convert_color($body)
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85 {
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86 $pattern = '/(.*)\<color\>\<param\>(.*)\<\/param\>(.*)\<\/color\>(.*)/ims';
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87
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88 while (preg_match($pattern, $body, $a)) {
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89 if (count($a) != 5)
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90 continue;
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91
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92 // extract color (either by name, or ####,####,####)
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93 if (strpos($a[2],',')) {
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94 $rgb = explode(',',$a[2]);
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95 $color = '#';
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96 for ($i=0; $i<3; $i++)
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97 $color .= substr($rgb[$i], 0, 2); // just take first 2 bytes
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98 }
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99 else {
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100 $color = $a[2];
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101 }
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102
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103 // put it all together
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104 $body = $a[1].'<span style="color: '.$color.'">'.$a[3].'</span>'.$a[4];
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105 }
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106
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107 return $body;
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108 }
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109
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110 protected static function convert_excerpt($body)
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111 {
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112 $pattern = '/(.*)\<excerpt\>(.*)\<\/excerpt\>(.*)/i';
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113
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114 while (preg_match($pattern, $body, $a)) {
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115 if (count($a) != 4)
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116 continue;
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117
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118 $quoted = '';
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119 $lines = explode('<br>', $a[2]);
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120
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121 foreach ($lines as $line)
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122 $quoted .= '>'.$line.'<br>';
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123
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124 $body = $a[1].'<span class="quotes">'.$quoted.'</span>'.$a[3];
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125 }
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126
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127 return $body;
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128 }
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129
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130 /**
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131 * Converts Enriched text into HTML format
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132 *
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133 * @param string $body Enriched text
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134 *
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135 * @return string HTML text
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136 */
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137 public static function to_html($body)
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138 {
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139 $body = str_replace('<<','<',$body);
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140 $body = self::convert_newlines($body);
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141 $body = str_replace("\n", '<br>', $body);
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142 $body = self::convert_formatting($body);
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143 $body = self::convert_color($body);
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144 $body = self::convert_font($body);
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145 $body = self::convert_excerpt($body);
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146 //$body = nl2br($body);
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147
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148 return $body;
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149 }
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150 }
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