<?php

ini_set('memory_limit', '500M');

gc_enable();

$time_start = microtime(true);

buildChm();

////////////

$time_end = microtime(true);

$time = $time_end - $time_start;

echo( "\nbuild time: ". $time." seconds.\n");

function buildChm( $cpp = true )

{

$scriptDir = dirname( __FILE__ );

$targetDir = $scriptDir.DIRECTORY_SEPARATOR ."chmhelp";

if ( file_exists( $targetDir ) == false )

{

if ( mkdir( $targetDir ) == false )

{

echo("can't create output directory: ". $targetDir."\n");

}

}

//for debuging set false to aviod recreation of xhtml files.

$processFiles = true;

$sourceDir = $scriptDir.DIRECTORY_SEPARATOR ."zh";

$commonDir = $scriptDir.DIRECTORY_SEPARATOR ."common";

$cssDir = $scriptDir.DIRECTORY_SEPARATOR ."css";

$keywordsFiles = array();

$errorsFiles = array();

$treeFiles = array();

$arrFiles = array();

dirToArray( $arrFiles, $sourceDir, ".html" );

asort( $arrFiles );

echo( "files: ".count( $arrFiles )."\n");

$processedFiles = 0;

$noTitleLinks = 0;

$colspans = 0;

foreach( $arrFiles as $file )

{

$filelow = strtolower( $file );

$relativename = substr( $filelow, strlen( $sourceDir ) + 1 );

$relativename = str_replace( "%", "_", $relativename ); // escape %

// current file

//echo( $relativename."\n" );

$targetfile = $targetDir.DIRECTORY_SEPARATOR;

$targetfile .= str_replace( DIRECTORY_SEPARATOR , "-", $relativename );

$id = str_replace( ".html", "", $relativename );

// start processing

$processedFiles++;

$id = str_replace( "\\", "/", $id );

$parent_id = "";

$patharr = explode( "/", $id );

if ( count( $patharr ) > 1 )

{

array_pop( $patharr );

foreach( $patharr as $pathelem )

{

if ( strlen($parent_id) > 0 )

{

$parent_id .= "/".$pathelem;

}

else

{

$parent_id = $pathelem;

}

}

}

// document id and parent document id

$id = str_replace( "/", "-", $id );

$parent_id = str_replace( "/", "-", $parent_id );

if ( $processFiles )

{

// fix xhtml errors

exec("tidy -config config.txt -o ".$targetfile." ".$file );

}

// load xhtml and fix tags

$dom = new DomDocument('1.0', 'UTF-8');

$dom->loadHTMLFile( $targetfile );

if ( $processFiles )

{

// delete scripts

deleteNodes( $dom );

// fix links to styles

$nodes = getNodesByName( $dom, "link");

foreach( $nodes as $e )

{

if( $e->hasAttribute("href"))

{

$e->setAttribute("href", basename( $e->getAttribute("href")));

}

if( $e->getAttribute("rel") != "stylesheet" )

{

$e->parentNode->removeChild( $e );

}

}

// remove divs with internal info > 1mb

$nodes = getNodesByName( $dom, "div");

foreach( $nodes as $e )

{

if( $e->getAttribute("class") == "printfooter" || strpos( $e->getAttribute("class"), "catlinks" ) !== false || strpos( $e->getAttribute("class"), "coliru-btn" ) !== false )

{

$e->parentNode->removeChild( $e );

}

else if ( $e->getAttribute('id') == "siteSub" || $e->getAttribute('id') == "mw-js-message" || $e->getAttribute('id') == "cpp-footer-base" )

{

$e->parentNode->removeChild( $e );

}

// remove navbar?

if ($e->getAttribute("class") == "t-navbar")

{

$e->parentNode->removeChild( $e );

}

}

// fix links to other pages

$nodes = array_merge( getNodesByName( $dom, "a"), getNodesByName( $dom, "area"));

foreach( $nodes as $e )

{

if( $e->hasAttribute("title"))

{

$href = $e->getAttribute("href");

$title = $e->getAttribute("title");

$hash = false;

$hashes = explode('#', $href, 2);

if (count($hashes) === 2) {

$href = $hashes[0];

$hash = $hashes[1];

}

if ( strpos( $href, "http") === false)

{

$new_value = str_replace( "/" , "-", $e->getAttribute("title"));

// fix bad titles where space is used instead of _

$new_value = str_replace( " " , "_", $new_value);

if (! strstr($new_value, "http")) {

// escape relative %

$new_value = str_replace( "%" , "_", urlencode($new_value));

}

if ($hash) { // fix hashes

$e->setAttribute("href", $new_value.".html"."#".$hash );

} else {

$e->setAttribute("href", $new_value.".html" );

}

// remove title from links?

$e->removeAttribute("title");

}

}

else if( $e->hasAttribute("href"))

{

$href = $e->getAttribute("href");

$hash = false;

$hashes = explode('#', $href, 2);

if (count($hashes) === 2) {

$href = $hashes[0];

$hash = $hashes[1];

}

if ( strpos( $href, "http") === false )

{

// bad link

$noTitleLinks++;

$relativenamefix = str_replace( DIRECTORY_SEPARATOR, "/", $relativename );

$relative_folders = explode( "/" , $relativenamefix );

$unFolders = substr_count( $href , "../" );

$hrefname = str_replace( "../", "", $href );

$hrefname = str_replace( ".html", "", $hrefname );

$unFolders++;

for ( $ind = 0; $ind < $unFolders; $ind++)

{

array_pop( $relative_folders );

}

$fref_folders = explode( "/" , $hrefname );

foreach ($fref_folders as $frf)

{

$relative_folders[] = $frf;

}

$fixedhref = implode( "-", $relative_folders );

if ($hash) { // fix hashes

$e->setAttribute("href", $fixedhref.".html"."#".$hash );

} else {

$e->setAttribute("href", $fixedhref.".html" );

}

}

}

}

// remove unwanted colspan="5", about 4mb of text!

$nodes = getNodesByName( $dom, "td");

foreach( $nodes as $e )

{

if( $e->hasAttribute("colspan") && $e->getAttribute("colspan") == 5 )

{

$e->removeAttribute("colspan");

$colspans++;

}

}

// fix links to images

$nodes = getNodesByName( $dom, "img");

foreach( $nodes as $e )

{

if( $e->hasAttribute("src"))

{

$e->setAttribute("src", basename( $e->getAttribute("src")));

}

}

}

// getting and fixing document title remplace <h1> to <div class="title">

$document_title = "";

$h1title = $dom->getElementById("firstHeading");

if ( $h1title )

{

foreach( $h1title->childNodes as $h1n )

{

$document_title .= $h1n->textContent;

}

}

else

{

// no page title

$errorsFiles[] = $targetfile;

}

// building keywords array

$keywords = array();

$pre_keywords = explode( ",", htmlspecialchars_decode( $document_title ));

foreach ( $pre_keywords as $keywrd )

{

if ( strpos( $keywrd, "std::" ) !== false )

{

$post_keywords = explode( "::", $keywrd);

$keywords[] = $post_keywords[ count( $post_keywords ) - 1 ];

}

else if ( strpos( $keywrd, ":" ) !== false )

{

$post_keywords = explode( ":", $keywrd);

$keywords[] = $post_keywords[ count( $post_keywords ) - 1 ];

}

else

{

$keywords[] = $keywrd;

}

}

if ( count( $keywords ) == 0 )

{

$keywords = $pre_keywords;

}

foreach ( $keywords as $keywrd )

{

$keywordsFiles[trim($keywrd)][] = 'chmhelp\\'.$id.".html";

}

// building toc tree

$id_path = explode("-", $id );

$last_elem = array_pop( $id_path );

$file_name = 'chmhelp\\'.$id.".html";

$current_root = &$treeFiles;

foreach ( $id_path as $path_obj )

{

foreach ( $current_root as $object )

{

if ( $object->id == $path_obj )

{

$current_root = &$object->childrens;

break;

}

}

}

$current_root[] = (object) array('title' => $document_title, 'url' => $file_name, 'id' => $last_elem, 'childrens' => array());

// current file info

echo("id: ".$id." parent id: ".$parent_id." title: ".$document_title."\n");

if ( $processFiles )

{

// Save processed file

$dom->saveHTMLFile( $targetfile );

exec("tidy -config config.txt -o ".$targetfile." ".$targetfile );

}

if ( $processedFiles > 50 )

{

//break;

}

gc_collect_cycles();

}

echo ("total files processed: ".$processedFiles ." errors: ".count($errorsFiles)."\n" );

// building table of contents

echo( "building toc cppreference.hhc ...\n");

echo( "files: ".count( $treeFiles )."\n");

$metadata = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">'."\n";

$metadata .= '<html><head><meta name="GENERATOR" content="Script from CEZEO software Ltd."></head><body>'."\n";

$metadata .= '<object type="text/site properties">';

$metadata .= "\n\t".'<param name="ImageType" value="Folder">'."\n\t</object>\n";

$metadata .= "<ul>\n";

buildTree( $treeFiles, $metadata, 1 );

$metadata .= "\n</ul></body></html>";

file_put_contents( $scriptDir.DIRECTORY_SEPARATOR ."cppreference.hhc", $metadata );

// building keywords index

echo( "building keywords index cppreference.hhk ...\n");

$metadata = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">'."\n";

$metadata .= '<html><head><meta name="GENERATOR" content="Script from CEZEO software Ltd."></head><body>'."\n<ul>\n";

foreach ( array_keys( $keywordsFiles ) as $kwf )

{

$metadata .= "\t<li><object type=\"text/sitemap\">\n";

$metadata .= "\t\t<param name=\"Name\" value=\"".$kwf."\">\n";

foreach ($keywordsFiles[$kwf] as $file)

{

$metadata .= "\t\t<param name=\"Local\" value=\"".$file."\">\n";

}

$metadata .= "\t</object>\n";

}

$metadata .= "\n</ul></body></html>";

file_put_contents( $scriptDir.DIRECTORY_SEPARATOR ."cppreference.hhk", $metadata );

// building project file

echo( "building project cppreference.hhp ...\n");

$metadata = "[OPTIONS]\nCompatibility=1.1 or later\nCompiled file=cppreference.chm\nContents file=cppreference.hhc\nDefault Window=default\nDefault topic=chmhelp\index.html\nDisplay compile progress=No\nFull-text search=Yes\nIndex file=cppreference.hhk\nLanguage=0x804 中文(简体，中国)\nTitle=Title=C / C++ 参考文档\n[WINDOWS]\n";

$metadata .= 'default="C / C++ 参考文档","cppreference.hhc","cppreference.hhk","chmhelp\index.html","chmhelp\index.html",,,,,173408,250,0,[0,32,1080,700],0x0000000,,,,,0,0'."\n[FILES]\n";

buildListOfFiles( $treeFiles, $metadata );

$metadata .= "\n";

file_put_contents( $scriptDir.DIRECTORY_SEPARATOR ."cppreference.hhp", $metadata );

// copying images etc.

$arrFiles = array();

dirToArray( $arrFiles, $commonDir, "." );

echo( "copying images and styles ...\n");

echo( "files: ".count( $arrFiles )."\n");

foreach( $arrFiles as $file )

{

if ( endsWith( $file, '.css' ))

{

copy( $file, $targetDir.DIRECTORY_SEPARATOR.basename( $file ));

echo( "file copied: ".basename( $file )."\n");

}

else if ( endsWith( $file, '.png' ))

{

copy( $file, $targetDir.DIRECTORY_SEPARATOR.basename( $file ));

echo( "file copied: ".basename( $file )."\n");

}

else if ( endsWith( $file, '.svg' ))

{

copy( $file, $targetDir.DIRECTORY_SEPARATOR.basename( $file ));

echo( "file copied: ".basename( $file )."\n");

}

gc_collect_cycles();

}

// replace css filse

$arrFiles = array();

dirToArray( $arrFiles, $cssDir, ".css" );

echo( "copying new styles ...\n");

echo( "files: ".count( $arrFiles )."\n");

foreach( $arrFiles as $file )

{

copy( $file, $targetDir.DIRECTORY_SEPARATOR.basename( $file ));

echo( "file copied: ".basename( $file )."\n");

gc_collect_cycles();

}

}

function buildTree(&$array, &$metadata, $level )

{

foreach( $array as $object )

{

if ( count( $object->childrens ) > 0 )

{

insertTabs( $metadata, $level );

$metadata .= '<li><object type="text/sitemap"><param name="Name" value="'.$object->title.'"><param name="ImageNumber" value="1"></object>'."\n";

insertTabs( $metadata, $level );

$metadata .= "<ul>\n";

$level++;

}

insertTabs( $metadata, $level );

$metadata .= '<li><object type="text/sitemap"><param name="Name" value="'.htmlspecialchars( $object->title ).'"><param name="Local" value="'.$object->url.'"></object>'."\n";

if ( count( $object->childrens ) > 0 )

{

buildTree( $object->childrens, $metadata, ( $level ));

$level--;

insertTabs( $metadata, $level );

$metadata .= "</ul>\n";

}

}

}

function insertTabs( &$metadata, $level )

{

for( $cnt = 0; $cnt < $level; $cnt++)

{

$metadata .= "\t";

}

}

function buildListOfFiles(&$array, &$metadata )

{

foreach( $array as $object )

{

$metadata .= $object->url."\n";

if ( count( $object->childrens ) > 0 )

{

buildListOfFiles( $object->childrens, $metadata );

}

}

}

function endsWith($haystack, $needle)

{

$length = strlen($needle);

if ($length == 0)

{

return true;

}

return (substr($haystack, -$length) === $needle);

}

function addNewMeta( $dom, $head, $name, $content )

{

$new_meta = $dom->createElement('meta');

$new_attr = $dom->createAttribute('name');

$new_attr->value = $name;

$new_meta->appendChild($new_attr);

$new_attr = $dom->createAttribute('content');

$new_attr->value = $content;

$new_meta->appendChild($new_attr);

$head->appendChild($new_meta);

}

function getNodesByName( $nde, $name )

{

$elems = array();

if ( $nde->childNodes )

{

foreach ($nde->childNodes as $nd)

{

$elems = array_merge( getNodesByName( $nd, $name ), $elems);

}

}

if ( $nde->nodeName === $name)

{

$elems[] = $nde;

}

return $elems;

}

function deleteNodes( $nde )

{

if ( $nde->childNodes )

{

$toRemove = array();

foreach ($nde->childNodes as $nd)

{

deleteNodes( $nd );

if ( deleteNode((string)$nd->nodeName ))

{

$toRemove[] = $nd;

}

}

foreach ($toRemove as $remNd)

{

$nde->removeChild( $remNd );

}

}

}

function deleteNode( $nodeName )

{

if ( $nodeName == "script" || $nodeName == "meta" || $nodeName == "style" )

{

return true;

}

return false;

}

function dirToArray(&$files, $dir, $ext)

{

$cdir = scandir($dir);

foreach ($cdir as $key => $value)

{

if (!in_array($value,array(".","..")))

{

if (is_dir($dir . DIRECTORY_SEPARATOR . $value))

{

dirToArray($files, $dir . DIRECTORY_SEPARATOR . $value, $ext);

}

else

{

if ( strpos( $value, $ext ) !== false )

{

if ( strpos( $value, "\\" ) === 0 )

{

$files[] = $dir.$value;

}

else

{

$files[] = $dir."\\".$value;

}

}

}

}

}

}

?>