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al3x/html2textile.php

Created November 11, 2008 22:32
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html2textile.php
#!/usr/bin/php -q
<?php
// modified from http://3v1n0.tuxfamily.org/scripts/detextile/HTML-to-Textile.php
class html2textile {
function detextile($text) {
$text = preg_replace("/(<\/?)(\w+)([^>]*>)/e", "'\\1'.strtolower('\\2').'\\3'", $text);
$text = preg_replace("/<br[ \/]*>\s*/","\n",$text);
$text = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $text);
$text = stripslashes($text);
$oktags = array('p','ol','ul','li','i','b','em','strong','span','a','h[1-6]',
'table','tr','td','u','del','sup','sub','blockquote', 'center', 'code');
$text = preg_replace_callback("/\t*<(img)\s*([^>]*)>/Usi",
array($this,'processTag'),$text);
foreach($oktags as $tag){
$text = preg_replace_callback("/\t*<(".$tag.")\s*([^>]*)>(.*)<\/\\1>/Usi",
array($this,'processTag'),$text);
}
$text = $this->detextile_process_glyphs($text);
$text = $this->detextile_process_lists($text);
$text = preg_replace('/^\t* *p\. /m','',$text);
return str_replace(array("#\\","/#"),
array(">","<"),
strip_tags($this->decode_high($text), '<pre>')); //strip_tags($text);
}
function detextile_process_glyphs($text) {
$glyphs = array(
'’'=>'\'', # single closing
'‘'=>'\'', # single opening
'”'=>'"', # double closing
'“'=>'"', # double opening
'—'=>'--', # em dash
'–'=>' - ', # en dash
'×' =>'x', # dimension sign
'™'=>'(TM)', # trademark
'®' =>'(R)', # registered
'©' =>'(C)', # copyright
'…'=>'...' # ellipsis
);
foreach($glyphs as $f=>$r){
$text = str_replace($f,$r,$text);
}
return $text;
}
function detextile_process_lists($text) {
$list = false;
$text = preg_split("/(<.*>)/U",$text,-1,PREG_SPLIT_DELIM_CAPTURE);
foreach($text as $line){
if ($list == false && preg_match('/<ol /',$line)){
$line = "";
$list = "o";
} else if (preg_match('/<\/ol/',$line)){
$line = "";
$list = false;
} else if ($list == false && preg_match('/<ul/',$line)){
$line = "";
$list = "u";
} else if (preg_match('/<\/ul/',$line)){
$line = "";
$list = false;
} else if ($list == 'o'){
$line = preg_replace('/<li.*>/U','# ', $line);
} else if ($list == 'u'){
$line = preg_replace('/<li .*>/U','* ', $line);
}
$glyph_out[] = $line;
}
return $text = implode('',$glyph_out);
}
function processTag($matches) {
list($all,$tag,$atts,$content) = $matches;
$a = $this->splat($atts);
$phr = array(
'em'=>'_',
'i'=>'__',
'b'=>'**',
'strong'=>'*',
'cite'=>'??',
'del'=>'-',
'ins'=>'+',
'u'=>'+',
'sup'=>'^',
'sub'=>'~',
'span'=>'%',
'code'=>'@'
);
$blk = array('p','h1','h2','h3','h4','h5','h6');
if(isset($phr[$tag])) {
return $phr[$tag].$this->sci($a).$content.$phr[$tag];
} elseif($tag=='blockquote') {
return 'bq.'.$this->sci($a).' '.$content;
} elseif($tag=='center') {
return 'p=.'.$this->sci($a).' '.$content;
} elseif(in_array($tag,$blk)) {
return $tag.$this->sci($a).'. '.$content;
} elseif ($tag=='a') {
$t = $this->filterAtts($a,array('href','title'));
$out = '"'.$content;
$out.= (isset($t['title'])) ? ' ('.preg_replace(array("/\(/","/\)/"), array("[","]"), $t['title']).')' : '';
$out.= '":'.$t['href'];
return $out;
} elseif ($tag=='img') {
$t = $this->filterAtts($a,array('src','alt'));
$out = '!'.($t['src']);
$out.= (isset($t['alt'])) ? '('.preg_replace(array("/\(/","/\)/"), array("[","]"), $t['alt']).')' : '';
$out.= '!';
return $out;
} else {
return $all;
}
}
// -------------------------------------------------------------
function filterAtts($atts,$ok)
{
foreach($atts as $a) {
if(in_array($a['name'],$ok)) {
if($a['att']!='') {
$out[$a['name']] = $a['att'];
}
}
}
# dump($out);
return $out;
}
// -------------------------------------------------------------
function sci($a)
{
$out = '';
foreach($a as $t){
$out.= ($t['name']=='class') ? '(='.$t['att'].')' : '';
$out.= ($t['name']=='id') ? '[='.$t['att'].']' : '';
$out.= ($t['name']=='style') ? '{='.$t['att'].'}' : '';
$out.= ($t['name']=='cite') ? ':'.$t['att'] : '';
if ($t['name']=='align')
if ($t['att'] == "left")
$out.= '/#';
elseif ($t['att'] == "right")
$out.= '#\\';
elseif ($t['att'] == "center")
$out.= '=';
elseif ($t['att'] == "justify")
$out.= '/##\\';
}
return $out;
}
// -------------------------------------------------------------
function splat($attr) // returns attributes as an array
{
$arr = array();
$atnm = '';
$mode = 0;
while (strlen($attr) != 0){
$ok = 0;
switch ($mode) {
case 0: // name
if (preg_match('/^([a-z]+)/i', $attr, $match)) {
$atnm = $match[1]; $ok = $mode = 1;
$attr = preg_replace('/^[a-z]+/i', '', $attr);
}
break;
case 1: // =
if (preg_match('/^\s*=\s*/', $attr)) {
$ok = 1; $mode = 2;
$attr = preg_replace('/^\s*=\s*/', '', $attr);
break;
}
if (preg_match('/^\s+/', $attr)) {
$ok = 1; $mode = 0;
$arr[] = array('name'=>$atnm,'whole'=>$atnm,'att'=>$atnm);
$attr = preg_replace('/^\s+/', '', $attr);
}
break;
case 2: // value
if (preg_match('/^("[^"]*")(\s+|$)/', $attr, $match)) {
$arr[]=array('name' =>$atnm,'whole'=>$atnm.'='.$match[1],
'att'=>str_replace('"','',$match[1]));
$ok = 1; $mode = 0;
$attr = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);
break;
}
if (preg_match("/^('[^']*')(\s+|$)/", $attr, $match)) {
$arr[]=array('name' =>$atnm,'whole'=>$atnm.'='.$match[1],
'att'=>str_replace("'",'',$match[1]));
$ok = 1; $mode = 0;
$attr = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);
break;
}
if (preg_match("/^(\w+)(\s+|$)/", $attr, $match)) {
$arr[]=
array('name'=>$atnm,'whole'=>$atnm.'="'.$match[1].'"',
'att'=>$match[1]);
$ok = 1; $mode = 0;
$attr = preg_replace("/^\w+(\s+|$)/", '', $attr);
}
break;
}
if ($ok == 0){
$attr = preg_replace('/^\S*\s*/', '', $attr);
$mode = 0;
}
}
if ($mode == 1) $arr[] =
array ('name'=>$atnm,'whole'=>$atnm.'="'.$atnm.'"','att'=>$atnm);
return $arr;
}
// -------------------------------------------------------------
function cmap() {
$f = 0xffff;
$cmap = array(
160, 255, 0, $f,
402, 402, 0, $f,
913, 929, 0, $f,
931, 937, 0, $f,
945, 969, 0, $f,
977, 978, 0, $f,
982, 982, 0, $f,
8226, 8226, 0, $f,
8230, 8230, 0, $f,
8242, 8243, 0, $f,
8254, 8254, 0, $f,
8260, 8260, 0, $f,
8465, 8465, 0, $f,
8472, 8472, 0, $f,
8476, 8476, 0, $f,
8482, 8482, 0, $f,
8501, 8501, 0, $f,
8592, 8596, 0, $f,
8629, 8629, 0, $f,
8656, 8660, 0, $f,
8704, 8704, 0, $f,
8706, 8707, 0, $f,
8709, 8709, 0, $f,
8711, 8713, 0, $f,
8715, 8715, 0, $f,
8719, 8719, 0, $f,
8721, 8722, 0, $f,
8727, 8727, 0, $f,
8730, 8730, 0, $f,
8733, 8734, 0, $f,
8736, 8736, 0, $f,
8743, 8747, 0, $f,
8756, 8756, 0, $f,
8764, 8764, 0, $f,
8773, 8773, 0, $f,
8776, 8776, 0, $f,
8800, 8801, 0, $f,
8804, 8805, 0, $f,
8834, 8836, 0, $f,
8838, 8839, 0, $f,
8853, 8853, 0, $f,
8855, 8855, 0, $f,
8869, 8869, 0, $f,
8901, 8901, 0, $f,
8968, 8971, 0, $f,
9001, 9002, 0, $f,
9674, 9674, 0, $f,
9824, 9824, 0, $f,
9827, 9827, 0, $f,
9829, 9830, 0, $f,
338, 339, 0, $f,
352, 353, 0, $f,
376, 376, 0, $f,
710, 710, 0, $f,
732, 732, 0, $f,
8194, 8195, 0, $f,
8201, 8201, 0, $f,
8204, 8207, 0, $f,
8211, 8212, 0, $f,
8216, 8218, 0, $f,
8218, 8218, 0, $f,
8220, 8222, 0, $f,
8224, 8225, 0, $f,
8240, 8240, 0, $f,
8249, 8250, 0, $f,
8364, 8364, 0, $f
);
return $cmap;
}
// -------------------------------------------------------------
function decode_high($text) {
$cmap = $this->cmap();
return mb_decode_numericentity($text, $cmap, "UTF-8");
}
}
$filename = $argv[1];
$fp = fopen($filename, "r");
$body = fread($fp, filesize($filename));
fclose($fp);
$html = stripslashes($body);
$html2textile = new html2textile;
$textile = $html2textile->detextile($html);
print($textile . "\n");
?>
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