/
convert-to-html.php
425 lines (373 loc) · 11.8 KB
/
convert-to-html.php
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<?php
// PHP 5.3
/* the parsing is done in two steps
* process_lists: line based stateful parser rewriting lists
preg_replace_callback replacing [[ and {{{
Then last bad links are reported
*/
{ // config
$target_directory = '../wiki'; // no spaces!
$pages = array();
$reference_pages = array();
chdir('vim-online-wiki-source');
$wiki_files =
array_merge(
glob('*'),
glob('*/*')
);
// these functions defines the design:
$to_html = array(
'page' => function($wiki_file_rel_path, $body){
// TODO: be smarter, take first = .. = code from file
$title = str_replace('/',' ',str_replace('.wiki', '', $wiki_file_rel_path));
return sprintf('
<!doctype html>
<html>
<head>
<title>%s</title>
<meta name="robots" content="index,nofollow" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<style type="text/css" media=screen>
h1 { border-bottom: 3px dotted #007f00; background-color: #DFD; max-width: 640px; }
h2 { border-bottom: 2px dotted #007f00; background-color: #DFD; max-width: 640px; }
h3 { border-bottom: 1px dotted #007f00; background-color: #DFD; max-width: 640px; }
span.inline_code {
background-color:#EEE;
padding: 2px;
padding-left: 4px;
padding-right: 4px;
}
pre.code {
max-width: 600px;
background-color:#EEE;
padding: 10px;
margin-left: 20px;
border-radius: 5px;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
}
th {
background-color: #DFD;
font-weight: bolder;
}
td, th {
border: 1px dotted #03476F;
}
td, th {
padding: .4em;
color: #222;
}
p {
max-width: 400px;
}
</style>
</head>
<body>
%s
</body>
</html>
', $title, $body);
},
'code_block' => function($text){
return "<pre class=\"code\">".$text."</pre>";
},
'wikilink' => function($wiki_path, $wiki_file_rel_path){
$parts = pathinfo($wiki_file_rel_path);
$href = $wiki_file_rel_path.'.html';
$label = basename($wiki_path);
$alt = $wiki_path;
return sprintf('<a href="%s" alt="%s">%s</a>', quote($href), quote($alt), quote($label));
}
);
}
{ // LIB (helper functions)
function quote($s){ return htmlentities($s); }
function get_absolute_path($path) {
$path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $path);
$parts = array_filter(explode(DIRECTORY_SEPARATOR, $path), 'strlen');
$absolutes = array();
foreach ($parts as $part) {
if ('.' == $part) continue;
if ('..' == $part) {
array_pop($absolutes);
} else {
$absolutes[] = $part;
}
}
return implode(DIRECTORY_SEPARATOR, $absolutes);
}
function process_lists($file_name, $s){
// I'm not that happy about this code, but it'll work
// on 1) start numbered list (item)
// on *) start bullet list (item)
// on " " continue list
// else stop list or keep line
$result = array();
$state = '';
$p_end = null;
$features = array();
$matrix = array();
$a = function($s) use(&$result){ $result[] = $s; };
$end_list = function() use(&$result, &$state, &$p_end){
$p_end();
$result[] = "</ul>\n"; $state ='';
};
# start end paragraphs
$in_p = false;
$p_start = function() use(&$in_p, &$a){
if (!$in_p){
$a("\n<p>");
$in_p = true;
}
};
$p_end = function() use(&$in_p, &$a){
if ($in_p) {
$a('</p>');
$in_p = false;
}
};
$code_start = function()use(&$a){ $a('<pre class="code">'); };
$code_end = function()use(&$a){ $a('</pre>'); };
$render_feature_matrix = function() use(&$a, &$features, &$matrix){
/*
$a('<table><tr><th></th>');
foreach ($features as $f => $f_desc) {
$a(sprintf('<th alt="%s">%s</th>', quote($f_desc), quote($f)));
}
$a('</tr>');
foreach ($matrix as $name => $features_of_name) {
$a(sprintf('<tr><th>%s</th>', $name));
foreach ($features as $f => $f_desc) {
if (in_array($f, $features_of_name)){
$a(sprintf("<td>yes</td>"));
} else {
$a(sprintf("<td></td>"));
}
}
$a('</tr>');
}
*/
$a(sprintf('<strong>%s comparison:</strong>', implode(', ', array_keys($matrix))));
$a('<table><tr><th>feature</th>');
foreach ($matrix as $name => $features_of_name) {
$a(sprintf('<th>%s</th>', quote($name)));
}
$a('<th>feature description</th></tr>');
foreach ($features as $f => $f_desc) {
$a(sprintf('<tr><th>%s</th>', quote($f)));
foreach ($matrix as $name => $features_of_name) {
if (in_array($f, $features_of_name)){
$a(sprintf("<td>yes</td>"));
} else {
$a(sprintf("<td></td>"));
}
}
$a(sprintf('<td>%s</td>', quote($f_desc)));
$a('</tr>');
}
$a('</table>');
};
foreach (explode("\n", $s) as $line) {
$error = function($msg) use(&$file_name, $line) {
die('ERROR parsing '.$file_name.' : '.$msg."\n".$line);
};
$line_empty = preg_match('/^[ ]*$/', $line);
if ($state == "feature_matrix_reading_features"){
// matrix: feature continuation
if (preg_match('/^MATRIX/', $line)){
$state = 'feature_matrix_reading_matrix';
} else {
if ($line_empty) continue;
if (preg_match('/^(.*?)[ ]*::[ ]*(.*)/', $line, $m)){
$features[$m[1]] = $m[2];
} else {
$error('unexpected matrix feature line ');
}
}
} elseif ($state == "feature_matrix_reading_matrix"){
// matrix continuation
if ($line_empty){
$render_feature_matrix();
$state = '';
} else {
if (preg_match('/^(.*?)[ ]*::[ ]*(.*)/', $line, $m)){
$matrix[$m[1]] = preg_split('/[ ]*,[ ]*/',$m[2]);
} else {
$error('unexpected matrix line ');
}
}
} elseif ($state == "in_code_block"){
// continue code block
if (preg_match('/^}}}/', $line)){
$code_end();
$state = '';
} else {
$a($line."\n");
}
} else if (in_array($state, array( "in_numbered_list", "in_bullet_list"))){
// continue lists
if ($state == "in_bullet_list" && preg_match('/^\*(.*)/', $line, $m)){
$a("<li>".$m[1]);
} else if ($state == "in_numbered_list" && preg_match('/^[0-9]*\)(.*)/', $line, $m)){
$a("<li>".$m[1]);
} else if (preg_match('/^ (.*)/', $line, $m)){
# keep line as is
$a($m[1]."\n");
} else {
$end_list();
}
} else if (preg_match('/^(=+) (.*)$/', $line, $m)){
// parse headers
$p_end();
$l = strlen($m[1]);
$a(sprintf("\n<h%d>%s</h%d>", $l, quote(preg_replace('/=*$/', '', $m[2])), $l));
} else {
if (preg_match('/^FEATURES/', $line, $m)) {
$state = 'feature_matrix_reading_features';
$features = array();
$matrix = array();
} else if (preg_match('/^1\)(.*)/', $line, $m)) {
// start 1) list
$state = "in_numbered_list";
$p_end();
$a("\n<ul><li>");
$a($m[1]);
} elseif (preg_match('/^\* (.*)/', $line, $m)) {
// start * list
$state = "in_bullet_list";
$p_end();
$a("\n<ul><li>");
$a($m[1]);
} elseif (preg_match('/^{{{$/', $line)) {
// start code block
$p_end();
$code_start();
$state = 'in_code_block';
} elseif (preg_match('/^[ ]*$/', $line)) {
$p_end();
} else {
# everything else
# keep line as is
$p_start();
$a($line."\n");
}
}
}
if ($state == "feature_matrix_reading_matrix")
$render_feature_matrix();
if (in_array($state, array( "in_numbered_list", "in_bullet_list"))){
end_list();
}
return implode($result);
}
function rel_path($dest, $root = '', $dir_sep = '/')
{
$root = explode($dir_sep, $root);
$dest = explode($dir_sep, $dest);
$path = '.';
$fix = '';
$diff = 0;
for($i = -1; ++$i < max(($rC = count($root)), ($dC = count($dest)));)
{
if(isset($root[$i]) and isset($dest[$i]))
{
if($diff)
{
$path .= $dir_sep. '..';
$fix .= $dir_sep. $dest[$i];
continue;
}
if($root[$i] != $dest[$i])
{
$diff = 1;
$path .= $dir_sep. '..';
$fix .= $dir_sep. $dest[$i];
continue;
}
}
elseif(!isset($root[$i]) and isset($dest[$i]))
{
for($j = $i-1; ++$j < $dC;)
{
$fix .= $dir_sep. $dest[$j];
}
break;
}
elseif(isset($root[$i]) and !isset($dest[$i]))
{
for($j = $i-1; ++$j < $rC;){
$fix = $dir_sep. '..'. $fix;
}
break;
}
}
return $path. $fix;
}
}
function wiki_to_html($target_directory, $wiki_file, array $to_html){
global $pages;
$pages[] = $wiki_file;
# KISS: count /
$path_depth = strlen(preg_replace('/[^\/]*/', '', $wiki_file));
$html_file = $target_directory.'/'.$wiki_file.'.html';
$patterns = array(
# inline code blocks {{{ }}}
'({{{)(.*?)}}}',
# strong
'(\*\*)((.|[\n])*?)\*\*',
# links
'(\[\[)([^\]]+)\]\]',
# chars (quoting)
'(\\\\\\)([0-9]+)',
);
$html = preg_replace_callback(
'/'.implode('|', $patterns).'/m',
function($m) use(&$to_html, $wiki_file){
global $reference_pages;
// each pattern starts at later index, so drop all empty items, so
// that 0 always is the identifying string
$s = $m[0]; array_shift($m);
while($m[0] == '') array_shift($m);
switch ($m[0]) {
case '{{{':
return sprintf('<span class="inline_code">%s</span>', $m[1]);
case '**':
return sprintf('<strong>%s</strong>', $m[1]);
break;
case '[[':
if (preg_match('/^([^:]+:\/\/[^|]*)(|.*)?$/', $m[1], $m2)){
// external url
$href = $m2[1];
$alt = '';
$label = empty($m2[2]) ? $href : substr($m2[2], 1);
return sprintf('<a href="%s" alt="%s">%s</a>', $href, $alt, $label);
} else {
// internal url
$reference_pages[] = $m[1];
return $to_html['wikilink']($m[1], rel_path('./'.$m[1], dirname($wiki_file)));
}
break;
case '\\\\':
return chr($m[1]);
default:
throw new Exception('bad replacement: '.var_export($m, true));
};
},
process_lists($wiki_file, "[[index]]\n".file_get_contents($wiki_file))
);
system('mkdir -p '. escapeshellcmd(dirname($html_file)));
$html = $to_html['page']($wiki_file_rel_path, $html);
file_put_contents($html_file, $html);
}
// clean:
system('rm -fr '.$target_directory);
mkdir($target_directory);
foreach ($wiki_files as $wiki_file) {
wiki_to_html($target_directory, $wiki_file, $to_html);
}
// TODO: check for broken links
$pages_path_as_key = array_flip($pages);
foreach ($reference_pages as $referenced_page) {
if (!isset($pages_path_as_key[$referenced_page]))
echo "WARNING: bad reference ".$referenced_page."\n";
}