MagicConfig.php

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<?php

/*

This program 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 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

class MagicConfig
{
    public function MagicConfig()
    {
        $this->separator = ".";

        $this->extensions = array(
            "a" => "ada95",
            "ada"       => "ada95",
            "adb"       => "ada95",
            "ads"       => "ada95",
            "asm"       => "asm_x86",
            "asp"       => "jscript|vb|vbdotnet",
            "awk"       => "awk",
            "bas"       => "vb|vbdotnet",
            "c" => "c",
            "cbl"       => "cobol",
            "cls"       => "vb|vbdotnet",
            "cob"       => "cobol",
            "cpy"       => "cobol",
            "cpp"       => "cpp",
            "cs"        => "csharp",
            "cxx"       => "cpp",
            "dat"       => "mumps",
            "dpr"       => "delphi",
            "e" => "eiffel|euphoria",
            "ew"        => "euphoria",
            "eu"        => "euphoria",
            "ex"        => "euphoria",
            "exw"       => "euphoria",
            "exu"       => "euphoria",
            "frm"       => "vb|vbdotnet",
            "h" => "c",
            "hpp"       => "cpp",
            "inc"       => "turbopascal|vb|vbdotnet",
            "java"      => "javaswing",
            "js"        => "jscript|javascript",
            "lsp"       => "lisp",
            "m" => "mumps",
            "pas"       => "delphi|turbopascal",
            "php"       => "php3",
            "php3"      => "php3",
            "php4"      => "php3",
            "pl"        => "perl",
            "pm"        => "perl",
            "py"        => "python",
            "pyc"       => "python",
            "rtn"       => "mumps",
            "scm"       => "scheme",
            "vb"        => "vb|vbdotnet",
            "vbs"       => "vb|vbdotnet|vbscript",
            "wsf"       => "vbscript"
        );
        
        $this->langfunctions = array(
            // ASCII
            // --- Languages
            "awk",
            "bash",
            "perl",
            "rc",
            "env",
            "cpp",
            "diff",
            "xdiff",
            "swf",
            "psfont",
            "lex",
            "lisp",
            "magic",
            "mime",
            // --- Markup
            "postscript",
            "rtf",
            "html",
            "xml",
            "sgml",
            // --- Generic tests
            "genericshell");
            
        $this->binfunctions = array(
            // Binary
            // --- Images
            "gif",
            "jpeg",
            "png",
            "bmp",
            "tif"
            // --- Compressed
        );
    }
    
    public function detect_cpp()
    {
        return !(strpos($this->file, "//") === false);
    }
    
    public function detect_awk()
    {
        if (preg_match("/^#!\s+\/bin\/nawk/", $this->file)
            || preg_match("/^#!\s+\/bin\/nawk/", $this->file)
            || preg_match("/^#!\s+\/usr\/bin\/nawk/", $this->file)
            || preg_match("/^#!\s+\/usr\/local\/bin\/nawk/", $this->file)
            || preg_match("/^#!\s+\/bin\/gawk/", $this->file)
            || preg_match("/^#!\s+\/usr\/bin\/gawk/", $this->file)
            || preg_match("/^#!\s+\/usr\/local\/bin\/gawk/", $this->file)
            || preg_match("/^#!\s+\/bin\/awk/", $this->file)
            || preg_match("/^#!\s+\/usr\/bin\/awk/", $this->file)
            || preg_match("/^BEGIN\s+/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_perl()
    {
        if (preg_match("/^#!\s+\/bin\/perl/", $this->file)
            || preg_match("/^eval\s+\"exec\s+\/bin\/perl/", $this->file)
            || preg_match("/^#!\s+\/usr\/bin\/perl/", $this->file)
            || preg_match("/^eval\s+\"exec\s+\/usr\/bin\/perl/", $this->file)
            || preg_match("/^#!\s+\/usr\/local\/bin\/perl/", $this->file)
            || preg_match("/^eval\s+\"exec\s+\/usr\/local\/bin\/perl/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_bash()
    {
        if (preg_match("/^#!\s+\/bin\/bash/", $this->file)
            || preg_match("/^#!\s+\/usr\/local\/bin\/bash/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_rc()
    {
        if (preg_match("/^#!\s+\/bin\/rc/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_env()
    {
        if (preg_match("/^#!\s*\/usr\/bin\/env/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_genericshell()
    {
        if (preg_match("/^#!/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_diff()
    {
        if (preg_match("/^diff\s+/", $this->file)
            || preg_match("/^\*\*\*\s+/", $this->file)
            || preg_match("/^Only\s+in\s+/", $this->file)
            || preg_match("/^Common\s+subdirectories:\s+/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_xdiff()
    {
        if (preg_match("/^%XDZ/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_swf()
    {
        if (preg_match("/^FWS/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_psfont()
    {
        if (preg_match("/^(.*?)PS-AdobeFont-1\.0/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_lex()
    {
        if (substr($this->file, 53, 10)=="yyprevious"
            || substr($this->file, 21, 17)=="generated by flex") {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_lisp()
    {
        return !(strpos($this->file, ";;") === false);
    }
    
    public function detect_magic()
    {
        return preg_match("/^#\s+Magic/", $this->file);
    }
    
    public function detect_mime()
    {
        return preg_match("/^Content-Type:/", $this->file);
    }
    
    public function detect_postscript()
    {
        return (substr($this->file, 0, 2)=="%!" || substr($this->file, 0, 3)==(string) (4) . "%!");
    }
    
    public function detect_rtf()
    {
        return substr($this->file, 0, 5)=="{\\rtf";
    }
    
    public function detect_html()
    {
        if (preg_match("/\s*<!doctype\s+html/", $this->file)
            || preg_match("/\s*<head/", $this->file)
            || preg_match("/\s*<title/", $this->file)
            || preg_match("/\s*<html/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_xml()
    {
        if (preg_match("/\s*<\?xml/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    public function detect_sgml()
    {
        if (preg_match("/\s*<!doctype/", $this->file)
            || preg_match("/\s*<!subdoc/", $this->file)
            || preg_match("/\s*<!--/", $this->file)) {
            return true;
        } else {
            return false;
        }
    }
    
    // --- Images
    
    public function detect_gif()
    {
        return (substr($this->file, 0, 6) == "GIF89a");
    }
    
    public function detect_jpeg()
    {
        return !(strpos(substr($this->file, 0, 16), "JFIF") === false);
    }

    public function detect_png()
    {
        $arr = unpack("C*", $this->file);
        if (sizeof($arr)<9) {
            return false;
        }
        return ($arr[1] == 0x89 && $arr[2] == 0x50
                && $arr[3] == 0x4E && $arr[4] == 0x47
                && $arr[5] == 0x0D && $arr[6] == 0x0A
                && $arr[7] == 0x1A && $arr[8] == 0x0A);
    }

    public function detect_bmp()
    {
        return (substr($this->file, 0, 2) == "BM");
    }

    public function detect_tif()
    {
        return ((substr($this->file, 0, 2) == "MM") || (substr($this->file, 0, 2) == "II"));
    }
}