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<?php
/**This PHP class serves as interface to the highlight utility.
Input and output streams are handled with pipes.
Command line parameters are validated before use.
*/
class HighlightPipe {
// alter these members to control highlight output
// see manpage for the options
var $hl_option = array(
'hl_bin' => 'highlight', // configure path of highlight binary
'syntax' => 'c',
'theme' => 'kwrite',
'force' => 1,
'line-numbers' => 0,
'line-number-length' => 4,
'line-number-start' => 0,
'zeroes' => 0,
'wraptype' => 0,
'line-length' => 0,
'reformat' => '',
'kw-case' => '',
'replace-tabs' => 0,
'encoding' => '',
'enclose-pre' => 1,
'inline-css' => 1,
'fragment' => 1,
);
// this member contains the input source code
var $input='';
// this member will contain the command string after getResult() was called
var $hl_cmd_str='';
function getInfo(){
return array(
'author' => 'Andre Simon',
'url' => 'http://www.andre-simon.de/',
'version' => '1.2',
);
}
// call this method to generate highlighted HTML code
function getResult() {
foreach ($this->hl_option as $key => $value) {
$this->hl_option[$key] = $this->validate( $value );
}
$descriptorspec = array(
0 => array("pipe", "r"),
1 => array("pipe", "w")
);
$this->hl_cmd_str = $this->hl_option['hl_bin'];
if ($this->hl_option['line-numbers']){
$this->hl_cmd_str .= " -l -m 1";
if ($this->hl_option['zeroes']){
$this->hl_cmd_str .= " -z ";
}
if ($this->hl_option['line-number-length']!='0' && is_numeric($this->hl_option['line-number-length'])) {
$this->hl_cmd_str .= ' -j ';
$this->hl_cmd_str .=$this->hl_option['line-number-length'];
}
}
if (is_numeric($this->hl_option['replace-tabs']) and $this->hl_option['replace-tabs']>0) {
$this->hl_cmd_str .= " -t ";
$this->hl_cmd_str .= $this->hl_option['replace-tabs'];
}
if ($this->hl_option['wraptype']>0){
$this->hl_cmd_str .= ($this->hl_option['wraptype'] == 1)? ' -V ':' -W ';
if ($this->hl_option['line-length']>0 && is_numeric($this->hl_option['line-length'])) {
$this->hl_cmd_str .= " -J ";
$this->hl_cmd_str .= $this->hl_option['line-length'];
}
}
if (strlen($this->hl_option['reformat'])>1){
$this->hl_cmd_str .= " -F ";
$this->hl_cmd_str .= $this->hl_option['reformat'];
}
if (strlen($this->hl_option['kw-case'])>1){
$this->hl_cmd_str .= " --kw-case ";
$this->hl_cmd_str .= $this->hl_option['kw-case'];
}
if ($this->hl_option['force']){
$this->hl_cmd_str .= " --force ";
}
if ($this->hl_option['inline-css']){
$this->hl_cmd_str .= " --inline-css ";
}
if ($this->hl_option['fragment']){
$this->hl_cmd_str .= " -f ";
}
if ($this->hl_option['theme']){
$this->hl_cmd_str .= " -s ";
$this->hl_cmd_str .= $this->hl_option['theme'];
}
if ($this->hl_option['encoding']){
$this->hl_cmd_str .= " -u ";
$this->hl_cmd_str .= $this->hl_option['encoding'];
}
if ($this->hl_option['enclose-pre']){
$this->hl_cmd_str .= " --enclose-pre ";
}
$this->hl_cmd_str .= " -S ";
$this->hl_cmd_str .= $this->hl_option['syntax'];
$process = proc_open($this->hl_cmd_str, $descriptorspec, $pipes);
if (is_resource($process)) {
fwrite($pipes[0], $this->input);
fclose($pipes[0]);
$output = stream_get_contents($pipes[1]);
fclose($pipes[1]);
// It is important that you close any pipes before calling
// proc_close in order to avoid a deadlock
proc_close($process);
}
return $output;
}
// PRIVATE STUFF
var $special = array(' ', '/','!','&','*','\\', '.', '|', 'ยด','\'', '<', '>');
function validate($string) {
return (strlen($string)>50)? "" : str_replace($this->special,"",$string);
}
}
/*****************************************************************************/
/*
// Sample code:
$generator = new HighlightPipe;
$generator->input='int main () { return 0; }';
$generator->hl_option['theme']='neon';
$generator->hl_option['syntax']='c';
$result= $generator->getResult();
print $result;
*/
?>
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