rc2: program/lib/Roundcube/rcube_text2html.php comparison

comparison program/lib/Roundcube/rcube_text2html.php @ 0:4681f974d28b

vanilla 1.3.3 distro, I hope

author	Charlie Root
date	Thu, 04 Jan 2018 15:52:31 -0500
parents
children	b6a96bdd6b29

comparison

equal deleted inserted replaced

--1:000000000000
+:4681f974d28b
+<?php
+/**
++-----------------------------------------------------------------------+
+| This file is part of the Roundcube Webmail client                     |
+| Copyright (C) 2008-2014, The Roundcube Dev Team                       |
+|                                                                       |
+| Licensed under the GNU General Public License version 3 or            |
+| any later version with exceptions for skins & plugins.                |
+| See the README file for a full license statement.                     |
+|                                                                       |
+| PURPOSE:                                                              |
+|   Converts plain text to HTML                                         |
++-----------------------------------------------------------------------+
+| Author: Aleksander Machniak <alec@alec.pl>                            |
++-----------------------------------------------------------------------+
+*/
+/**
+* Converts plain text to HTML
+*
+* @package    Framework
+* @subpackage Utils
+*/
+class rcube_text2html
+{
+/**
+* Contains the HTML content after conversion.
+*
+* @var string $html
+*/
+protected $html;
+/**
+* Contains the plain text.
+*
+* @var string $text
+*/
+protected $text;
+/**
+* Configuration
+*
+* @var array $config
+*/
+protected $config = array(
+// non-breaking space
+'space' => "\xC2\xA0",
+// enables format=flowed parser
+'flowed' => false,
+// enables delsp=yes parser
+'delsp' => false,
+// enables wrapping for non-flowed text
+'wrap' => true,
+// line-break tag
+'break' => "<br>\n",
+// prefix and suffix (wrapper element)
+'begin' => '<div class="pre">',
+'end'   => '</div>',
+// enables links replacement
+'links' => true,
+// string replacer class
+'replacer' => 'rcube_string_replacer',
+// prefix and suffix of unwrappable line
+'nobr_start' => '<span style="white-space:nowrap">',
+'nobr_end'   => '</span>',
+);
+/**
+* Constructor.
+*
+* If the plain text source string (or file) is supplied, the class
+* will instantiate with that source propagated, all that has
+* to be done it to call get_html().
+*
+* @param string  $source    Plain text
+* @param boolean $from_file Indicates $source is a file to pull content from
+* @param array   $config    Class configuration
+*/
+function __construct($source = '', $from_file = false, $config = array())
+{
+if (!empty($source)) {
+$this->set_text($source, $from_file);
+}
+if (!empty($config) && is_array($config)) {
+$this->config = array_merge($this->config, $config);
+}
+}
+/**
+* Loads source text into memory, either from $source string or a file.
+*
+* @param string  $source    Plain text
+* @param boolean $from_file Indicates $source is a file to pull content from
+*/
+function set_text($source, $from_file = false)
+{
+if ($from_file && file_exists($source)) {
+$this->text = file_get_contents($source);
+}
+else {
+$this->text = $source;
+}
+$this->_converted = false;
+}
+/**
+* Returns the HTML content.
+*
+* @return string HTML content
+*/
+function get_html()
+{
+if (!$this->_converted) {
+$this->_convert();
+}
+return $this->html;
+}
+/**
+* Prints the HTML.
+*/
+function print_html()
+{
+print $this->get_html();
+}
+/**
+* Workhorse function that does actual conversion (calls _converter() method).
+*/
+protected function _convert()
+{
+// Convert TXT to HTML
+$this->html       = $this->_converter($this->text);
+$this->_converted = true;
+}
+/**
+* Workhorse function that does actual conversion.
+*
+* @param string Plain text
+*/
+protected function _converter($text)
+{
+// make links and email-addresses clickable
+$attribs  = array('link_attribs' => array('rel' => 'noreferrer', 'target' => '_blank'));
+$replacer = new $this->config['replacer']($attribs);
+if ($this->config['flowed']) {
+$flowed_char = 0x01;
+$delsp       = $this->config['delsp'];
+$text        = rcube_mime::unfold_flowed($text, chr($flowed_char), $delsp);
+}
+// search for patterns like links and e-mail addresses and replace with tokens
+if ($this->config['links']) {
+$text = $replacer->replace($text);
+}
+// split body into single lines
+$text        = preg_split('/\r?\n/', $text);
+$quote_level = 0;
+$last        = null;
+// wrap quoted lines with <blockquote>
+for ($n = 0, $cnt = count($text); $n < $cnt; $n++) {
+$flowed = false;
+if ($this->config['flowed'] && ord($text[$n][0]) == $flowed_char) {
+$flowed   = true;
+$text[$n] = substr($text[$n], 1);
+}
+if ($text[$n][0] == '>' && preg_match('/^(>+ {0,1})+/', $text[$n], $regs)) {
+$q        = substr_count($regs[0], '>');
+$text[$n] = substr($text[$n], strlen($regs[0]));
+$text[$n] = $this->_convert_line($text[$n], $flowed || $this->config['wrap']);
+$_length  = strlen(str_replace(' ', '', $text[$n]));
+if ($q > $quote_level) {
+if ($last !== null) {
+$text[$last] .= (!$length ? "\n" : '')
+. $replacer->get_replacement($replacer->add(
+str_repeat('<blockquote>', $q - $quote_level)))
+. $text[$n];
+unset($text[$n]);
+}
+else {
+$text[$n] = $replacer->get_replacement($replacer->add(
+str_repeat('<blockquote>', $q - $quote_level))) . $text[$n];
+$last = $n;
+}
+}
+else if ($q < $quote_level) {
+$text[$last] .= (!$length ? "\n" : '')
+. $replacer->get_replacement($replacer->add(
+str_repeat('</blockquote>', $quote_level - $q)))
+. $text[$n];
+unset($text[$n]);
+}
+else {
+$last = $n;
+}
+}
+else {
+$text[$n] = $this->_convert_line($text[$n], $flowed || $this->config['wrap']);
+$q        = 0;
+$_length  = strlen(str_replace(' ', '', $text[$n]));
+if ($quote_level > 0) {
+$text[$last] .= (!$length ? "\n" : '')
+. $replacer->get_replacement($replacer->add(
+str_repeat('</blockquote>', $quote_level)))
+. $text[$n];
+unset($text[$n]);
+}
+else {
+$last = $n;
+}
+}
+$quote_level = $q;
+$length      = $_length;
+}
+if ($quote_level > 0) {
+$text[$last] .= $replacer->get_replacement($replacer->add(
+str_repeat('</blockquote>', $quote_level)));
+}
+$text = join("\n", $text);
+// colorize signature (up to <sig_max_lines> lines)
+$len           = strlen($text);
+$sig_sep       = "--" . $this->config['space'] . "\n";
+$sig_max_lines = rcube::get_instance()->config->get('sig_max_lines', 15);
+while (($sp = strrpos($text, $sig_sep, $sp ? -$len+$sp-1 : 0)) !== false) {
+if ($sp == 0 || $text[$sp-1] == "\n") {
+// do not touch blocks with more that X lines
+if (substr_count($text, "\n", $sp) < $sig_max_lines) {
+$text = substr($text, 0, max(0, $sp))
+.'<span class="sig">'.substr($text, $sp).'</span>';
+}
+break;
+}
+}
+// insert url/mailto links and citation tags
+$text = $replacer->resolve($text);
+// replace line breaks
+$text = str_replace("\n", $this->config['break'], $text);
+return $this->config['begin'] . $text . $this->config['end'];
+}
+/**
+* Converts spaces in line of text
+*/
+protected function _convert_line($text, $is_flowed)
+{
+static $table;
+if (empty($table)) {
+$table = get_html_translation_table(HTML_SPECIALCHARS);
+unset($table['?']);
+// replace some whitespace characters
+$table["\r"] = '';
+$table["\t"] = '    ';
+}
+// skip signature separator
+if ($text == '-- ') {
+return '--' . $this->config['space'];
+}
+// replace HTML special and whitespace characters
+$text = strtr($text, $table);
+$nbsp = $this->config['space'];
+// replace spaces with non-breaking spaces
+if ($is_flowed) {
+$pos  = 0;
+$diff = 0;
+$len  = strlen($nbsp);
+$copy = $text;
+while (($pos = strpos($text, ' ', $pos)) !== false) {
+if ($pos == 0 || $text[$pos-1] == ' ') {
+$copy = substr_replace($copy, $nbsp, $pos + $diff, 1);
+$diff += $len - 1;
+}
+$pos++;
+}
+$text = $copy;
+}
+// make the whole line non-breakable if needed
+else if ($text !== '' && preg_match('/[^a-zA-Z0-9_]/', $text)) {
+// use non-breakable spaces to correctly display
+// trailing/leading spaces and multi-space inside
+$text = str_replace(' ', $nbsp, $text);
+// wrap in nobr element, so it's not wrapped on e.g. - or /
+$text = $this->config['nobr_start'] . $text .  $this->config['nobr_end'];
+}
+return $text;
+}
+}

Mercurial > hg > rc2

comparison program/lib/Roundcube/rcube_text2html.php @ 0:4681f974d28b