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txt2tags.class.php
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<?php $T2TVersion = "20121206";
/**
txt2tags.class.php
Written by (c) Petko Yotov 2012 www.pmwiki.org/Petko
Development sponsored by Eric Forgeot.
txt2tags is a lightweight markup language created by
Aurelio Jargas and written in Python (www.txt2tags.org).
This class here attempts to transpose some of the features
of the Python convertor to the PHP language.
Most of this script was written by Petko Yotov except:
- functions PSS(), Keep(), Restore(), RegExp $UEX based on
the PmWiki engine by Patrick R. Michaud www.pmichaud.com
- the RegExp $imgrx based on txt2tags.py by Aurelio Jargas
This text is Free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.
See http://www.gnu.org/copyleft/gpl.html for full details
and lack of warranty.
== How to use this script ==
This class should be included from other scripts, for example:
# load the class
require_once('txt2tags.class.php');
## initialize a new T2T object: two ways
# either with an existing disk file:
$x = new T2T("test.t2t", true);
# or with a variable containing the entire T2T markup:
$x = new T2T($page["text"]);
# optional: some settings, after new/init, before go()
$x->enabletoc = 1;
$x->enableinclude = 1;
$x->snippets['**'] = "<strong>%s</strong>"; # instead of <b>
# run all processing
$x->go();
# get the complete HTML output including <head>
$html = $x->fullhtml;
# alternatively, get some other variables:
$body = $x->bodyhtml; # only the part inside the <body> tags
$fullconfig = $x->config; # what was in the "config" area of the file?
== Notes ==
- This is an early public release, ready to be tested.
- Including disk files is disabled out of the box, because of
potential vulnerabilities. Enabling it on systems where
untrusted people could edit the t2t content is not recommended.
A future version may allow the inclusion of files from the
current directory or only with *.t2t extension.
To enable inclusions, use $x->enableinclude = 1;
*/
class T2T {
# these variables could be read or forced
var $title = ''; # the document title
var $content = ''; # the content of the t2t file
var $headers = ''; # the first 3 lines of the t2t file
var $config = ''; # the full config area, including ext.ref.
var $bodytext = ''; # the full body text after inclusions
var $bodyhtml = ''; # the innerHTML of the body of the output, no <html>...<head>
var $fullhtml = ''; # the full <html>...</html> output
var $enabletoc = 0; # automatically enabled if %%toc or %!options: --toc
var $enableinclude = 0;# allow file inclusions
var $maxtoclevels = 5; # h1-h? titles go into toc, same as %!options: --toc-level 1
var $mtime; # last modified timestamp of the input file
var $date; # timestamp of the current date
var $cssfile = ''; # the css file to be included in the HTML header
var $maskemail = 0; # rewrite plaintext e-mail links
var $encoding = "UTF-8"; # assume default encoding if none in file
var $parsetargets = "html|xhtml"; # accept %!command(html) and %!command(xhtml)
var $snippets = array(
'header1' => "<h1>%s</h1>\n",# text (first line of file)
'header2' => "<h2>%s</h2>\n",# text
'header3' => "<h3>%s</h3>\n",# text
'headerwrap' => "<div style='text-align:center;'>\n%s</div>\n",# headers
'title' => '<h%d id="%s">%s</h%1$d>',# level, id, text
'hrule' => '<hr class="%s"/>', # light|heavy
'verbatim' => "<pre>\n%s</pre>", # content
'mono' => '<code>%s</code>', # content
'center' => "<center>%s</center>", # content
'img' => '<img align="%s" src="%s" border="0" alt=""/>', # align, url
'link' => '<a href="%s">%s</a>', # url, text
'cssfile' => '<link rel="stylesheet" href="%s" type="text/css"/>',
'**' => '<b>%s</b>', # bold content
'//' => '<i>%s</i>', # italics content
'__' => '<u>%s</u>', # underlined content
'--' => '<s>%s</s>', # striked content
'tableopen' => "<table %s cellpadding=\"4\">\n", # align, border
'tableclose' => "</table>\n",
'tablerow' => " <tr>\n%s </tr>\n", # tagged cells
'tablehead' => " <th%s>%s</th>\n", # align, content
'tablecell' => " <td%s>%s</td>\n", # align, content
# special
'blockquoteopen' => '<blockquote>',
'blockquoteclose' => '</blockquote>',
'paraopen' => '<p>',
'paraclose' => '</p>',
'+listopen' => "<ol>\n",
'+listclose' => "</ol>\n",
'+itemopen' => "<li>",
'+itemmiddle' => "",
'+itemclose' => "</li>\n",
'-listopen' => "<ul>\n",
'-listclose' => "</ul>\n",
'-itemopen' => "<li>",
'-itemmiddle' => "",
'-itemclose' => "</li>\n",
':listopen' => "<dl>\n",
':listclose' => "</dl>\n",
':itemopen' => "<dt>",
':itemmiddle' => "</dt><dd>\n",
':itemclose' => "</dd>\n",
'listindent' => ' ', # nicer HTML output
# title, encoding, version, styles, body
'html' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>%s</title>
<meta http-equiv="Content-Type" content="text/html; charset=%s"/>
<meta name="generator" content="txt2tags.class.php version %s"/>
%s
</head>
<body bgcolor="white" text="black">
%s
</body></html>');
# used internally
var $infile = array();
var $outfile = array();
var $preproc = array();
var $postproc = array();
var $KPV = array();
var $KPCount = 0;
var $csslink = '';
function T2T($input, $isfile = 0) {
$this->set_macros($input, $isfile); # macros
# get content
$this->content = $isfile
? $this->read($input, true)
: str_replace("\r", '', $input);
# get header, config, body
$this->R = $this->head_conf_body($this->content);
# public variables
$this->headers = implode("\n", $this->R['header']);
$this->config = implode("\n", $this->R['config']);
$this->bodytext = implode("\n", $this->R['body']);
}
function go($output = '') { # run the full processing
$this->parse_config($this->R['config']); # read config settings
$lines = $this->run_preproc($this->R['body']); # run %!preproc replacements
# strip comments, identify areas and titles, tables and horizontal rules (bars)
$lines = $this->firstpass($lines);
# second pass
$lines = $this->secondpass($this->R['header'], $lines);
# restore
$body = implode("\n", $lines);
$body = $this->Restore($body);
$body = str_replace(array("\032\032", "\033\033"), '', $body);
# public variables
$this->title = $this->esc($this->run_macros($this->R['header'][0]));
$this->bodyhtml = $this->run_postproc($body); # %!postproc replacements
$html = sprintf($this->snippets['html'], $this->title, $this->encoding,
$GLOBALS['T2TVersion'], $this->csslink, $body);
$this->fullhtml = $this->run_postproc($html); # %!postproc replacements
if($output=='body') return $this->bodyhtml;
if($output=='html') return $this->fullhtml;
return;
}
function parse_config($lines) { # try to read the supported configuration options
$opts = "encoding|style|postproc|preproc|options";
$tgts = $this->parsetargets;
foreach($lines as $c){
if(preg_match("/^%!\\s*({$opts})(?:\\((?:{$tgts})\\))?\\s*:\\s*(.*)$/i", $c, $m)) {
# options, preproc and postproc are cumulative
list(, $setting, $val) = $m;
switch(strtolower($setting)) {
case "encoding" : $this->encoding = trim($val); break;
case "style" : $this->csslink = sprintf($this->snippets['cssfile'], trim($val));
case "preproc" : $this->preproc[] = $this->add_proc($setting, trim($val)); break;
case "postproc" : $this->postproc[] = $this->add_proc($setting, trim($val)); break;
case "options":
if(strpos(" $val", '--mask-email')) $this->maskemail = 1;
if(preg_match('/--toc(?!-)/', $val)) $this->enabletoc = 1;
if(preg_match('/--toc-level[= ]+([1-5])/', $val, $n)) $this->maxtoclevels = $n[1];
if(preg_match('/--encoding[= ]+(\\S+)/', $val, $n)) $this->encoding = $n[1];
if(preg_match('/--style[= ]+(\\S+)/', $val, $n))
$this->csslink = sprintf($this->snippets['cssfile'], trim($val));
break;
}
}
}
}
function add_proc($when, $x) { # add a pre-processor or a postprocessor
if(! preg_match("/^ *(\"[^\"]+\"|'[^']+'|\\S+)\\s*(.*)$/", $x, $m)) return;
$s = preg_replace('/^("|\')(.*?)\\1$/', '$2', trim($m[1]));
$r = preg_replace('/^("|\')(.*?)\\1$/', '$2', trim(@$m[2]));
$r = preg_replace('/\\\\(?=[0-9])/', '$', $r);
$r = str_replace(array('\\n', '\\t'), array("\n", "\t"), $r);
return array("\032$s\032m", $r);
}
function run_preproc($lines) { # make the replacements
$body = implode("\n", $lines);
foreach($this->preproc as $a) {
$body = preg_replace($a[0], $a[1], $body);
}
return explode("\n", $body);
}
function run_postproc($body) { # make the replacements
foreach($this->postproc as $a) {
$body = preg_replace($a[0], $a[1], $body);
}
return $body; # end of processing
}
function firstpass($lines) { # strip comments, identify areas, titles, toc
$snippets = $this->snippets;
$toc = array();
$postoc = 0;
$lines2 = array();
$openarea = '';
$areacontent = '';
$toccnt = 0;
$tocnbs = array(0, 0, 0, 0, 0, 0);
$table = '';
foreach($lines as $line) {
# special areas raw, tagged, verbatim, comments
if($openarea) {
if($line == $openarea) { # close area
if(rtrim($line) != "%%%") # comment areas
$lines2[] = $this->closeRTV($openarea, $areacontent);
}
else { # fill area
$areacontent .= "$line\n";
}
continue;
}
if(preg_match('/^("""|```|\'\'\'|%%%) *$/', $line)) { # open area
$openarea = trim($line);
continue;
}
if($line!='' && $line{0}=='%' && ! preg_match('/^%%(infile|outfile|date|mtime|toc\\s*$)/i', $line) )
continue; # remove comment lines
# special lines raw, tagged, verbatim
if(preg_match('/^("""|```|\'\'\') /', $line, $m)) {
$lines2[] = $this->closeRTV($m[1], substr($line, 4));
continue;
}
# Title, Numbered Title
if(preg_match('/^ *((=){1,5})(?!=)\\s*(\\S.*[^=]|[^\\s=])\\1(?:\\[([\\w-]+)\\])?\\s*$/', $line, $m) ||
preg_match('/^ *((\\+){1,5})(?!\\+)\\s*(\\S.*[^+]|[^\\s=])\\1(?:\\[([\\w-]+)\\])?\\s*$/', $line, $m) ) {
$toccnt++;
$anchor = @$m[4] ? $m[4] : "toc$toccnt";
$txt = $this->esc(trim($m[3]));
$level = strlen($m[1]);
if($m[2]=='+') {
if($level>$tocnbs[0])$tocnbs[$level] = 1;
else $tocnbs[$level]++;
if($level<$tocnbs[0])for($i=$level+1; $i<6; $i++) $tocnbs[$i] = 0;
$prefix = implode(".", array_slice($tocnbs, 1, $level));
$prefix = preg_replace('/^(0\\.)+/', '', $prefix);
$txt = "$prefix. $txt";
$tocnbs[0] = $level;
}
$txt = $this->Keep($txt);
$lines2[] = "\032\032".sprintf($snippets['title'], $level, $anchor, $txt); # \032: block that cannot be nested in lists
# collect toc entries
if($this->maxtoclevels>=$level)
$toc[] = $this->sp($level) . "- [$txt #$anchor]";
continue;
}
# tables
if(preg_match('/^ *(\\|\\|?) /', $line, $m)) {
if(!$table) { # open table
$attr = ($line{0}==' ')? ' align="center"' : "";
if(preg_match('/\\|\\s*$/', $line)) {
$attr .= ' border="1"';
}
$table = sprintf($snippets['tableopen'], $attr);
}
# fill table
if($m[1]=='||') $fmt = $snippets['tablehead'];
else $fmt = $snippets['tablecell'];
$line = $this->run_inline($line);
$row = substr($line, strlen($m[0]));
if(! preg_match('/\\|\\s*$/', $row)) $row .= ' | ';
$m = preg_split('/( \\|+(?: |$))/', $row, -1, PREG_SPLIT_DELIM_CAPTURE);
$cells = '';
for($i=1; $i<count($m); $i+=2){
$c = $m[$i-1];
$attr = '';
if($c && $c{0}==' ') {
$attr = (substr($c, -1)==' ') ? ' align="center"' : ' align="right"';
}
$span = strlen(trim($m[$i]));
if($span>1) $attr .= " colspan=\"$span\"";
$cells .= sprintf($fmt, $attr, $c);
}
$table .= sprintf($snippets['tablerow'], $cells);
continue;
}
elseif($table) { # close table
$lines2[] = "\033\033". $this->Keep($table . $snippets['tableclose']); # \033: block that can be nested in lists
$table = '';
}
# horizontal rule (bar1, bar2)
if(preg_match('/^ *(=|-|_){20,}\\s*$/', $line, $m)) {
$class = $m[1] == "=" ? 'heavy':'light';
$lines2[] = "\032\032".$this->Keep(sprintf($snippets['hrule'], $class));
continue;
}
if(preg_match("/^ +\\[([\034\\w_,.+%$#@!?+~\\/-]+\\.(?:png|jpe?g|gif|bmp))\\] +$/i", $line)) {
$lines2[] = "\033\033". $this->Keep(sprintf($snippets['center'], $this->run_inline($line)));
continue;
}
if(trim(strtolower($line))=='%%toc') {
$this->enabletoc = $postoc = 1;
$line = '%%toc';
}
$lines2[] = $line;
} # end foreach line
# close ALL
if($openarea && $openarea != '%%%') # close all areas
$lines2[] = $this->closeRTV($openarea, $areacontent);
if($table)
$lines2[] = "\033\033". $this->Keep($table . $snippets['tableclose']."\n");
if($this->enabletoc && count($toc)) {
if($postoc) { # there is %%toc in the page
array_unshift($toc, "\032\032");
$toc[] = "\032\032";
foreach($lines2 as $k=>$v) {
if($v=='%%toc') array_splice($lines2, $k, 1, $toc);
}
}
else { # before the body: bar, toc-list, bar
$bar = "\032\032".$this->Keep(sprintf($snippets['hrule'], 'light'));
array_unshift($toc, $bar);
$toc[] = $bar;
$lines2 = array_merge($toc, $lines2);
}
}
return $lines2;
}
function secondpass($headers, $lines) { # all other marks
$snippets = $this->snippets;
$lines2 = array();
$html = '';
for($i=0; $i<3; $i++) {
$j = $i+1;
$h = $this->esc($headers[$i]);
if($h) $html .= sprintf($snippets["header$j"], $this->run_macros($h));
}
if($html) $lines2[] = $this->Keep(sprintf($snippets["headerwrap"], $html));
$blockquote = 0;
$blockquotecontent = '';
$para = false;
$openlist = 0;
$listcontent = '';
$ListLevels = array(array(-1, '', '')); # $level, $spaces, $type
foreach($lines as $line) {
# blockquote
if(preg_match('/^(\\t+)([^\\t].*)$/', $line, $m)) {
if($para) {
$para = false;
$lines2[] = $snippets['paraclose'];
}
$level = strlen($m[1]);
$blockquotecontent .= $this->fixblockquote($blockquote, $level)
. $m[1]. $this->run_inline($m[2])."\n";
continue;
}
elseif($blockquote) { # close bq
$lines2[] = "\032\032".$blockquotecontent . $this->fixblockquote($blockquote, 0);
$blockquotecontent = '';
}
# List, Numbered List, Definition List
if(preg_match('/^( *)([+-]) (\\S.*)$/', $line, $m) ||
preg_match( '/^( *)(:) ( *\\S.*)$/', $line, $m)) {
$openlist = 2;
if($para) {
$para = false;
$lines2[] = $snippets['paraclose'];
}
list(, $spaces, $type, $text) = $m;
$text = $this->run_inline($text);
$upped = 0;
while(count($ListLevels)>0) {
list($plevel, $pspaces, $ptype) = array_pop($ListLevels);
## close previous list
if($plevel>=0 && strcmp($spaces, $pspaces)<0) {
$listcontent .= "\n".$this->sp($plevel).$snippets["{$ptype}itemclose"] . $this->sp($plevel).$snippets["{$ptype}listclose"];
$upped ++;
continue;
}
if($upped) $pspaces = $spaces;
$ListLevels[] = array($plevel, $pspaces, $ptype); # restore
## open list
if($plevel<0 || strcmp($spaces, $pspaces)>0) { # new list/sublist
$level = $plevel+1;
$listcontent .= "\n" . $this->sp($level). $snippets["{$type}listopen"];
$ListLevels[] = array($level, $spaces, $type);
}
else { ## close prev item
$listcontent .= "\n".$this->sp($plevel).$snippets["{$ptype}itemclose"];
$level = $plevel;
if($ptype!=$type) {
$listcontent .= "\n".$this->sp($level).$snippets["{$ptype}listclose"]
."\n".$this->sp($level).$snippets["{$type}listopen"];
$ListLevels[count($ListLevels)-1][2] = $type; # restore
}
}
## open item
$listcontent .= $this->sp($level).$snippets["{$type}itemopen"];
## fill content
$listcontent .= $text . $snippets["{$type}itemmiddle"];
break;
}
continue;
}
elseif($openlist) {
if(trim($line)=='' || strpos($line, "\032\032")===0 ) {
$openlist --;
if(!$openlist || strpos($line, "\032\032")===0) { # second empty line, close ALL
while(count($ListLevels)>1) {
list($plevel, $pspaces, $ptype) = array_pop($ListLevels);
$listcontent .= "\n".$this->sp($plevel).$snippets["{$ptype}itemclose"]
.$this->sp($plevel).$snippets["{$ptype}listclose"];
}
$lines2[] = $this->Keep($listcontent);
$lines2[] = $line;
$listcontent = "";$openlist=0;
continue;
}
else {
list($plevel, ,) = $ListLevels[count($ListLevels)-1];
$listcontent .= $this->sp($plevel+1)."{$snippets["paraopen"]}{$snippets["paraclose"]}\n";
}
}
else {
list($plevel, $pspaces, $ptype) = array_pop($ListLevels);
if(preg_match('/^(( *)([+-:])) *$/', $line, $m) && $m[1]== "$pspaces$ptype") { # close
$listcontent .= "\n".$this->sp($plevel).$snippets["{$ptype}itemclose"]
. $this->sp($plevel).$snippets["{$ptype}listclose"];
if($plevel) $openlist = 2;
else {
$lines2[] = $this->Keep($listcontent);
$listcontent = "";$openlist=0;
continue;
}
}
else {
if($openlist==1)
$listcontent .= $this->sp($plevel+1)."{$snippets["paraopen"]}{$snippets["paraclose"]}\n";
$openlist = 2;
$ListLevels[] = array($plevel, $pspaces, $ptype);
$listcontent .= $this->sp($plevel+1).$this->run_inline($line)."\n";
}
}
continue;
}
if(preg_match("/^[\032\033]{2}/", $line)) {
if($para) {
$para = false;
$lines2[] = $snippets['paraclose'];
}
$lines2[] = $line;
continue;
}
if($para) {
if(trim($line)=='') {
$para = false;
$lines2[] = $snippets['paraclose'];
}
else {
$lines2[] = $this->run_inline($line);
}
continue;
}
# $para = false;
if(trim($line)!='') {
$lines2[] = $snippets['paraopen'];
$lines2[] = $this->run_inline($line);
$para = true;
continue;
}
$lines2[] = $line;
}
# close ALL
if($blockquote)
$lines2[] = $this->Keep($blockquotecontent . $this->fixblockquote($blockquote, 0));
if($openlist) {
while(count($ListLevels)>1) {
list($plevel, $pspaces, $ptype) = array_pop($ListLevels);
$listcontent .= "\n".$this->sp($plevel).$snippets["{$ptype}itemclose"]
.$this->sp($plevel).$snippets["{$ptype}listclose"];
}
$lines2[] = $this->Keep($listcontent);
}
if($para) {
$para = false;
$lines2[] = $snippets['paraclose'];
}
return $lines2;
}
function run_inline($line) { # inline transformations (links, images, bold, mono...)
$snippets = $this->snippets;
# inline Raw, Mono, Tagged
if(preg_match_all('/(\'|"|`){2}([^\\s](.*?[^\\s])?\\1*)\\1\\1/', $line, $m, PREG_SET_ORDER)) {
foreach($m as $a) {
$type = $a[1].$a[1];
$c = $this->PSS($a[2]);
$tmp = $this->closeRTV($type, $c);
$line = preg_replace('/(\'|"|`){2}([^\\s](.*?[^\\s])?\\1*)\\1\\1/', $tmp, $line, 1);
}
}
# macros
$line = $this->run_macros($line);
# <[img]>
$imgrx = "\\[([\034\\w_,.+%$#@!?+~\\/-]+\\.(?:png|jpe?g|gif|bmp))\\]";
$line = preg_replace("/^$imgrx(?=.)/ei",
"\$this->Keep(sprintf(\$snippets['img'], 'left', '$1'))", $line);
$line = preg_replace("/(?<=.)$imgrx$/ei",
"\$this->Keep(sprintf(\$snippets['img'], 'right', '$1'))", $line);
$line = preg_replace("/$imgrx/ei",
"\$this->Keep(sprintf(\$snippets['img'], 'middle', '$1', 'middle'))", $line);
$UEX = '<>"{}|\\\\^`()\\[\\]\''; # UrlExcludeChars
$PRT = '(?:https?|ftp|news|telnet|gopher|wais|mailto):';
$Links = array(
"{$PRT}[^\\s$UEX]+" =>'',
"www\\d?\\.[^\\s$UEX]+" =>'http://', # lazy links
"ftp\\d?\\.[^\\s$UEX]+" =>'ftp://', # lazy links
"\\w[\\w.-]+@[\\w-.]+[^\\s$UEX]+" =>'mailto:', # lazy links
); #
# [txt link], [txt #anchor]
foreach($Links as $k=>$v) {
$line = preg_replace("/\\[([^\\]]+?) +($k)\\]/ei",
"\$this->Keep(sprintf(\$snippets['link'], \$this->esc('$v$2'), \$this->esc('$1', 1)))", $line);
}
# local links
$line = preg_replace("/\\[([^\\]]+?) +([^\\s$UEX]+)\\]/ei",
"\$this->Keep(sprintf(\$snippets['link'], \$this->esc('$2'), \$this->esc('$1', 1)))", $line);
# free links www.link, e@mail, http://link
foreach($Links as $k=>$v) {
if($v=='mailto:' && $this->maskemail) {
$line = preg_replace("/\\b({$k}[^\\s.,?!$UEX])/ei",
"\$this->Keep('<' . str_replace(array('@', '.'), array(' (a) ', ' '), '$1') . '>$2')", $line);
}
else
$line = preg_replace("/\\b({$k}[^\\s.,?!$UEX])/ei",
"\$this->Keep(sprintf(\$snippets['link'], \$this->esc('$v$1'), \$this->esc('$1')))", $line);
}
$line = $this->esc($line);
# Bold, Italic, Underline, Strike
$b = array('*', '/', '_', '-');
foreach($b as $c) {
$q = preg_quote($c, '/');
$line = preg_replace("/($q){2}([^\s](?:.*?\\S)?\\1*)\\1\\1/e",
"sprintf(\$snippets['$c$c'], \$this->PSS('$2'))", $line);
}
return $line;
}
function set_macros($input, $isfile = 0) {
$this->date=time();
if($isfile && file_exists($input)) {
$this->mtime = filemtime($input);
$this->infile = $this->fileattr($input);
}
else {
$this->mtime = time();
$this->infile = $this->fileattr('-');
}
$this->outfile = $this->fileattr('-');
}
function run_macros($line) {
$line = preg_replace('/%%(date|mtime)(\\((.+?)\\))?/ie',
'strftime("$2"? $this->PSS("$3"):"%Y%m%d", $this->$1)', $line);
$line = preg_replace('/%%infile(?:\\((.*?)\\))?/ie',
'"$1" ? str_replace(array_keys($this->infile), array_values($this->infile), "$1")
: $this->infile["%f"]', $line);
$line = preg_replace('/%%outfile(?:\\((.*?)\\))?/ie',
'"$1" ? str_replace(array_keys($this->outfile), array_values($this->outfile), "$1")
: $this->outfile["%f"]', $line);
return $line;
}
function fixblockquote(&$prev, $curr) { # close open blocks, open sub-blocks
$s = $this->snippets;
$x = '';
while ($prev<$curr) $x .= str_repeat("\t", ++$prev) . $s['blockquoteopen'] . "\n";
while ($prev>$curr) $x .= str_repeat("\t", $prev--) . $s['blockquoteclose'] . "\n";
return $x;
}
function closeRTV(&$type, &$x) { # Raw, Tagged or Verbadim lines/areas
switch($type{0}) {
case '%': $type = $x = ''; return '';
case "'": $y = $x; break;
case '"': # raw
$y = $this->esc($x);
break;
case '`': # verbatim, mono
$s = $this->snippets;
$fmt = (strlen($type)==2) ? $s['mono'] : $s['verbatim'];
$y = sprintf($fmt, $this->esc($x));
break;
}
$block = (strlen($type)==3) ? "\033\033" : '';
$type = $x = '';
return $block. $this->Keep($y);
}
function PSS($x) { return str_replace('\\"','"',$x); } # Strip RegExp slashes
function Keep($x) { # preserves a string from being processed by wiki markups
$x = $this->Restore($x);
$this->KPCount++; $this->KPV[$this->KPCount]=$x;
return "\034\034{$this->KPCount}\034\034";
}
function Restore($x) { # recovers all hidden strings
return preg_replace("/\034\034(\\d.*?)\034\034/e", "\$this->KPV['\$1']", $x);
}
function sp($n){ # add spaces for nicer indented HTML source code
return str_repeat($this->snippets['listindent'], $n);
}
function esc($x, $pss=0) { # htmlspecialchars
if($pss) $x = $this->PSS($x);
return str_replace(
array('&', '<', '>', '$'),
array('&', '<', '>', '$'),
$x);
}
function fileattr($fname) { # variables that can be in %%infile()
if($fname == '-') return array(
'' => '-', '%f'=> '-', '%F'=> '-', '%e'=> '',
'%p'=> '-', '%d'=> '.', '%D'=> '.', '%%'=>'%');
preg_match('/\\.([^.\\/]+)$/',$fname, $m); $ext=@$m[1];
return array(
'' => basename($fname),
'%f'=> basename($fname),
'%F'=> preg_replace('/\\.[^.]+$/', '', basename($fname)),
'%e'=> $m[1],
'%p'=>realpath($fname),
'%d'=>dirname(realpath($fname)),
'%D'=>basename(dirname(realpath($fname))),
'%%'=>'%');
}
function read($filename, $allowed = false) { # get a file content
if(!$allowed) return '';
if(!file_exists($filename)) return '';
return str_replace("\r", '', implode('', @file($filename)));
}
# get the Header, Config area and Body of a t2t file
# the function will include the content of any included files
function head_conf_body($content) {
$lines = explode("\n", $content);
$R = array();
$R['header'] = $R['config'] = $R['body'] = array();
# headers
if($lines[0]=='') {
$R['header'][0] = $R['header'][1] = $R['header'][2] = '';
array_shift($lines);
}
else {
for ($i=0; $i<3 && isset($lines[0]); $i++) {
$R["header"][$i] = array_shift($lines);
}
}
# config
$mlcomment = false;
while(isset($lines[0])) {
$line = array_shift($lines);
if(rtrim($line) == '%%%') { # comment areas in Config
$mlcomment = ! $mlcomment;
continue;
}
if($mlcomment || trim($line)=='') continue;
if(preg_match('/^%!\\s*includeconf\\s*:\\s*(.+)$/', $line, $m)) {
$f = trim($m[1]);
if($f{0}!='/') $f = $this->infile['%d'] . DIRECTORY_SEPARATOR . $f;
$r = $this->head_conf_body($this->read($f, $this->enableinclude));
for($i=count($r['config'])-1; $i>=0; $i--)
array_unshift($lines, $r['config'][$i]);
continue;
}
if($line{0} != '%' || preg_match('/^%(%(date|mtime|toc|infile|outfile)|! *include)/i', $line)) {
array_unshift($lines, $line);
break;
}
$R["config"][] = $line;
}
# body
$mlcomment = false;
while(isset($lines[0])) {
$line = array_shift($lines);
if(rtrim($line) == '%%%') { # comment areas
$mlcomment = ! $mlcomment;
continue;
}
if($mlcomment) continue;
if(preg_match('/^%!\\s*include(?:\\(x?html\\))?\\s*:\\s*(``|\'\'|""|)(.+)\\1\\s*$/', $line, $m)) {
$f = trim($m[2]);
if($f{0}!='/') $f = $this->infile['%d'] . DIRECTORY_SEPARATOR . $f;
$r = $this->head_conf_body($this->read($f, $this->enableinclude));
if($m[1]) {
$q = implode("\n", $r['body'])."\n";
$type = str_repeat($m[1]{1}, 3);
$line = $this->closeRTV($type, $q);
}
else {
for($i=count($r['body'])-1; $i>=0; $i--)
array_unshift($lines, $r['body'][$i]);
continue;
}
}
$R['body'][] = $line;
}
return $R;
}
}