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<?php
/*
* Copyright 2015 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under AGPLv3
* (see COPYING for full license text)
*
*/
namespace libraries;
class Pygments {
private $file;
private $mimetype;
private $filename;
public function __construct($file, $mimetype, $filename) {
$this->file = $file;
$this->mimetype = $mimetype;
$this->filename = $filename;
}
private static function get_pygments_info() {
return cache_function_full('pygments_info-v2', 1800, function() {
$r = (new \libraries\ProcRunner(array(FCPATH."scripts/get_lexer_list.py")))->execSafe();
$ret = json_decode($r["stdout"], true);
if ($ret === NULL) {
throw new \exceptions\ApiException('pygments/json-failed', "Failed to decode JSON", $r);
}
return $ret;
});
}
public static function get_lexers() {
return cache_function('lexers-v2', 1800, function() {
$last_desc = "";
foreach (self::get_pygments_info() as $lexer) {
$desc = $lexer['fullname'];
$name = $lexer['names'][0];
if ($desc == $last_desc) {
continue;
}
$last_desc = $desc;
$lexers[$name] = $desc;
}
$lexers["text"] = "Plain text";
return $lexers;
});
}
// Allow certain types to be highlight without doing it automatically
public function should_highlight()
{
$typearray = array(
'image/svg+xml',
);
if (in_array($this->mimetype, $typearray)) return false;
if ($this->mime2lexer($this->mimetype)) return true;
return false;
}
public function can_highlight()
{
if ($this->mime2lexer($this->mimetype)) return true;
return false;
}
// Return the lexer that should be used for highlighting
public function autodetect_lexer()
{
if (!$this->should_highlight()) {
return false;
}
$lexer = $this->mime2lexer($this->mimetype);
// filename lexers overwrite mime type mappings
$filename_lexer = $this->filename2lexer();
if ($filename_lexer) {
return $filename_lexer;
}
return $lexer;
}
// Map MIME types to lexers needed for highlighting
private function mime2lexer()
{
$typearray = array(
'application/javascript' => 'javascript',
'application/mbox' => 'text',
'application/postscript' => 'postscript',
'application/smil' => 'ocaml',
'application/x-applix-spreadsheet' => 'actionscript',
'application/x-awk' => 'awk',
'application/x-desktop' => 'text',
'application/x-fluid' => 'text',
'application/x-genesis-rom' => 'text',
'application/x-java' => 'java',
'application/x-m4' => 'text',
'application/xml-dtd' => "xml",
'application/xml' => 'xml',
'application/x-perl' => 'perl',
'application/x-php' => 'php',
'application/x-ruby' => 'ruby',
'application/x-shellscript' => 'bash',
'application/xslt+xml' => "xml",
'application/x-x509-ca-cert' => 'text',
'message/rfc822' => 'text',
'text/css' => 'css',
'text/html' => 'xml',
'text/plain-ascii' => 'ascii',
'text/plain' => 'text',
'text/troff' => 'groff',
'text/x-asm' => 'nasm',
'text/x-awk' => 'awk',
'text/x-c' => 'c',
'text/x-c++' => 'cpp',
'text/x-c++hdr' => 'c',
'text/x-chdr' => 'c',
'text/x-csrc' => 'c',
'text/x-c++src' => 'cpp',
'text/x-diff' => 'diff',
'text/x-gawk' => 'awk',
'text/x-haskell' => 'haskell',
'text/x-java' => 'java',
'text/x-lisp' => 'cl',
'text/x-literate-haskell' => 'haskell',
'text/x-lua' => 'lua',
'text/x-makefile' => 'make',
'text/x-ocaml' => 'ocaml',
'text/x-patch' => 'diff',
'text/x-perl' => 'perl',
'text/x-php' => 'php',
'text/x-python' => 'python',
'text/x-ruby' => 'ruby',
'text/x-scheme' => 'scheme',
'text/x-shellscript' => 'bash',
'text/x-subviewer' => 'bash',
'text/x-tcl' => 'tcl',
'text/x-tex' => 'tex',
);
if (array_key_exists($this->mimetype, $typearray)) return $typearray[$this->mimetype];
// fall back to pygments own list if not found in our list
foreach (self::get_pygments_info() as $lexer) {
if (isset($lexer['mimetypes'][$this->mimetype])) {
return $lexer['names'][0];
}
}
if (strpos($this->mimetype, 'text/') === 0) return 'text';
# default
return false;
}
// Map special filenames to lexers
private function filename2lexer()
{
$namearray = array(
'asciinema.json' => 'asciinema',
'PKGBUILD' => 'bash',
'.vimrc' => 'vim'
);
if (array_key_exists($this->filename, $namearray)) return $namearray[$this->filename];
$longextarray = array(
'.asciinema.json' => 'asciinema',
);
foreach ($longextarray as $key => $lexer) {
if (substr($this->filename, -strlen($key)) === $key) {
return $lexer;
}
}
if (strpos($this->filename, ".") !== false) {
$extension = substr($this->filename, strrpos($this->filename, ".") + 1);
if ($extension === false) {
return false;
}
$extensionarray = array(
'awk' => 'awk',
'c' => 'c',
'coffee' => 'coffee-script',
'cpp' => 'cpp',
'diff' => 'diff',
'h' => 'c',
'hs' => 'haskell',
'html' => 'xml',
'java' => 'java',
'js' => 'js',
'lhs' => 'lhs',
'lua' => 'lua',
'mli' => 'ocaml',
'mll' => 'ocaml',
'ml' => 'ocaml',
'mly' => 'ocaml',
'patch' => 'diff',
'php' => 'php',
'pl' => 'perl',
'pp' => 'puppet',
'py' => 'python',
'rb' => 'ruby',
's' => 'asm',
'sh' => 'bash',
'tcl' => 'tcl',
'tex' => 'tex',
);
if (array_key_exists($extension, $extensionarray)) return $extensionarray[$extension];
}
return false;
}
// Handle lexer aliases
public function resolve_lexer_alias($alias)
{
if ($alias === false) return false;
$aliasarray = array(
'py' => 'python',
'sh' => 'bash',
's' => 'asm',
'pl' => 'perl'
);
if (array_key_exists($alias, $aliasarray)) return $aliasarray[$alias];
return $alias;
}
}
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