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Diffstat (limited to 'application/libraries/Pygments.php')
| -rw-r--r-- | application/libraries/Pygments.php | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/application/libraries/Pygments.php b/application/libraries/Pygments.php new file mode 100644 index 000000000..4baf43925 --- /dev/null +++ b/application/libraries/Pygments.php @@ -0,0 +1,248 @@ +<?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; + } + + $extensionarray = array( + 'awk' => 'awk', + 'c' => 'c', + 'cast' => 'asciinema', + 'coffee' => 'coffee-script', + 'cpp' => 'cpp', + 'diff' => 'diff', + 'haml' => 'haml', + 'h' => 'c', + 'hs' => 'haskell', + 'html' => 'xml', + 'java' => 'java', + 'js' => 'js', + 'lhs' => 'lhs', + 'lua' => 'lua', + 'mli' => 'ocaml', + 'mll' => 'ocaml', + 'ml' => 'ocaml', + 'mly' => 'ocaml', + 'mysql' => 'mysql', + 'patch' => 'diff', + 'pgsql' => 'postgresql', + 'php' => 'php', + 'pl' => 'perl', + 'plpgsql' => 'plpgsql', + 'pm' => 'perl', + 'postgresql' => 'postgresql', + 'pp' => 'puppet', + 'py' => 'python', + 'rb' => 'ruby', + 'rs' => 'rust', + 's' => 'asm', + 'sh' => 'bash', + 'sql' => 'sql', + 'tcl' => 'tcl', + 'tex' => 'tex', + 'yml' => 'yaml', + ); + if (array_key_exists($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; + } + +} |