Programming Forums > Web Development and Design > Other Web Development Languages

Wizard1988 · Mar 19th, 2007, 12:17 AM

DaWei is suggesting that the line numbers and the actual code should be split into two columns so you could select only the code column and avoid the line numbers. I think...

DaWei · Mar 19th, 2007, 9:05 AM

Note that the images are deliberately degraded to reduce bandwidth demands on the forum.

grimpirate · Mar 19th, 2007, 1:32 PM

I got ya now DaWei and here is the source that does what you're asking for[PHP]<html>
<head>
<title>Grim PHP Syntax Highlighter</title>
<style>
div.lineNumbers {
float: left;
text-align: left;
border-right: 1px #999999 solid;
margin-right: 8px;
}
</style>
</head>
<body>
<span style="font-family: Courier New; font-size: 10pt">
<?php
$filename = 'syntax_h.php';
ob_start();
highlight_file($filename);
$source = ob_get_contents();
ob_end_clean();
$source = explode(chr(13), $source);
$temp = substr($source[0], 0, 35);
$temp .= substr($source[0], 36);
$source[0] = substr($temp, 6);
$temp = substr($source[count($source) - 1], 0, strlen($source[count($source) - 1]) - 8);
$source[count($source) - 1] = $temp;
for($i = 1; $i < count($source); $i++){
$source[$i] = substr($source[$i], 6);
}
for($i = 0; $i < count($source) - 1; $i++){
$source[$i] .= '<br />';
}
$lineNum = array();
$spaces = strlen(count($source));
for($i = 0; $i < count($source); $i++){
array_push($lineNum, '<span style="color: #777777">' . ($i + 1) . '</span> ');
for($j = 0; $j < $spaces - strlen($i + 1); $j++){
$lineNum[$i] = ' ' . $lineNum[$i];
}
$lineNum[$i] .= '<br />';
}
echo '<div class="lineNumbers">';
for($i = 0; $i < count($lineNum); $i++){
echo $lineNum[$i];
}
echo '</div>';
echo '<div class="sourceCode">';
for($i = 0; $i < count($source); $i++){
echo $source[$i];
}
echo '</div>';
?>
</span>
</body>
</html>[/PHP]Or at least it does it on my computer hehe ^_^. Only tested it on Mozilla FireFox and Internet Explorer though.

Wizard1988 · Mar 19th, 2007, 5:48 PM

Yeah this is a really usefull piece of code.

Arevos · Mar 19th, 2007, 7:59 PM

Quote:

Originally Posted by grimpirate

I got ya now DaWei and here is the source that does what you're asking for

I don't see why three quarters of the code is necessary. Why not something like:

 php Syntax (Toggle Plain Text) 
<?php
$filename = 'syntax_h.php';
 
ob_start();
highlight_file($filename);
$source = ob_get_contents();
ob_end_clean();
 
$number_lines = count(explode("<br />", $source));
?>
 
<div class="lineNumbers">
<code><?php print implode(range(1, $number_lines), "\n<br />") ?></code>
</div>
<div class="sourceCode">
<?php print $source; ?>
</div>
<?php
$filename = 'syntax_h.php';

ob_start();
highlight_file($filename);
$source = ob_get_contents();
ob_end_clean();

$number_lines = count(explode("<br />", $source));
?>

<div class="lineNumbers">
<code><?php print implode(range(1, $number_lines), "\n<br />") ?></code>
</div>
<div class="sourceCode">
<?php print $source; ?>
</div>

With some CSS to keep the line heights the same:

 css Syntax (Toggle Plain Text) 
.lineNumbers, .sourceCode {
    line-height: 12pt;
    vertical-align: top;
    margin: 0px;
    padding: 0px;
}
 
.lineNumbers {
    float: left;
    text-align: left;
    border-right: 1px #999999 solid;
    margin-right: 8px;
    padding-right: 8px;
}
.lineNumbers, .sourceCode {
    line-height: 12pt;
    vertical-align: top;
    margin: 0px;
    padding: 0px;
}

.lineNumbers {
    float: left;
    text-align: left;
    border-right: 1px #999999 solid;
    margin-right: 8px;
    padding-right: 8px;
}

DaWei · Mar 19th, 2007, 9:07 PM

Exploding on a string such as "<br /"> may not be effective. Many textual source code files never heard of "<br /"> or its variants, such as "<br/>". The idea is to reproduce logical lines in such a way that the resulting code is usable as reproduced, when copied intact. Since languages vary in this respect, it means reproducing the text in a way that will be acceptable to the target interpretation.

titaniumdecoy · Mar 19th, 2007, 10:48 PM

Here is a shorter version of Arevos' code. It solves the issue of exploding on "<br />" brought up by DaWei.

 PHP Syntax (Toggle Plain Text) 
<?php
$filename = 'syntax_h.php';
$num_lines = count(file($filename));
?>
 
<div class="lineNumbers">
<code><?php print implode(range(1, $num_lines), "\n<br />") ?></code>
</div>
<div class="sourceCode">
<?php highlight_file($filename); ?>
</div>
<?php
$filename = 'syntax_h.php';
$num_lines = count(file($filename));
?>

<div class="lineNumbers">
<code><?php print implode(range(1, $num_lines), "\n<br />") ?></code>
</div>
<div class="sourceCode">
<?php highlight_file($filename); ?>
</div>

Arevos · Mar 20th, 2007, 4:55 AM

I'm don't quite get why "<br />"s would be a problem, assuming the functionality of highlight_file remains the same.

Titaniumdecoy's code is a lot neater, however. I'm rather jealous I didn't think of doing it that way, myself

Styx · Mar 20th, 2007, 7:33 PM

That is interesting =D

so finally, it can be shortened to:
[php]<?php
$file = 'test.php';
echo '<code class="num">', implode(range(1, count(file($file))), '<br />'), '</code>';
highlight_file($file);
?>[/php]

 css Syntax (Toggle Plain Text) 
.num {
float: left;
color: gray;
text-align: right;
margin-right: 6pt;
padding-right: 6pt;
border-right: 1px solid gray;}
.num {
float: left;
color: gray;
text-align: right;
margin-right: 6pt;
padding-right: 6pt;
border-right: 1px solid gray;}

titaniumdecoy · Mar 20th, 2007, 8:20 PM

Did you test that code, Styx? It doesn't work in my browser, as the code is shifted below the line numbers.

Mar 19th, 2007, 12:17 AM	#11
Wizard1988 Professional Programmer Join Date: Oct 2005 Location: Chitown Posts: 417 Rep Power: 3	DaWei is suggesting that the line numbers and the actual code should be split into two columns so you could select only the code column and avoid the line numbers. I think... __________________ JG-Webdesign

Mar 19th, 2007, 9:05 AM	#12
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Note that the images are deliberately degraded to reduce bandwidth demands on the forum. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Mar 19th, 2007, 1:32 PM	#13
grimpirate King of Portal Join Date: Sep 2005 Posts: 419 Rep Power: 4	I got ya now DaWei and here is the source that does what you're asking for[PHP]<html> <head> <title>Grim PHP Syntax Highlighter</title> <style> div.lineNumbers { float: left; text-align: left; border-right: 1px #999999 solid; margin-right: 8px; } </style> </head> <body> <span style="font-family: Courier New; font-size: 10pt"> <?php $filename = 'syntax_h.php'; ob_start(); highlight_file($filename); $source = ob_get_contents(); ob_end_clean(); $source = explode(chr(13), $source); $temp = substr($source[0], 0, 35); $temp .= substr($source[0], 36); $source[0] = substr($temp, 6); $temp = substr($source[count($source) - 1], 0, strlen($source[count($source) - 1]) - 8); $source[count($source) - 1] = $temp; for($i = 1; $i < count($source); $i++){ $source[$i] = substr($source[$i], 6); } for($i = 0; $i < count($source) - 1; $i++){ $source[$i] .= '<br />'; } $lineNum = array(); $spaces = strlen(count($source)); for($i = 0; $i < count($source); $i++){ array_push($lineNum, '<span style="color: #777777">' . ($i + 1) . '</span> '); for($j = 0; $j < $spaces - strlen($i + 1); $j++){ $lineNum[$i] = ' ' . $lineNum[$i]; } $lineNum[$i] .= '<br />'; } echo '<div class="lineNumbers">'; for($i = 0; $i < count($lineNum); $i++){ echo $lineNum[$i]; } echo '</div>'; echo '<div class="sourceCode">'; for($i = 0; $i < count($source); $i++){ echo $source[$i]; } echo '</div>'; ?> </span> </body> </html>[/PHP]Or at least it does it on my computer hehe ^_^. Only tested it on Mozilla FireFox and Internet Explorer though. __________________ Lo, there do I see my father. 'Lo, there do I see My mother, and my sisters, and my brothers. 'Lo, there do I see The line of my people... Back to the beginning. 'Lo, they do call to me. They bid me take my place among them. In the halls of Valhalla... Where the brave... May live... ...forever.. GrimBB \| Mimesis

Mar 19th, 2007, 5:48 PM	#14
Wizard1988 Professional Programmer Join Date: Oct 2005 Location: Chitown Posts: 417 Rep Power: 3	Yeah this is a really usefull piece of code. __________________ JG-Webdesign

Mar 19th, 2007, 9:07 PM	#16
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Exploding on a string such as "<br /"> may not be effective. Many textual source code files never heard of "<br /"> or its variants, such as "<br/>". The idea is to reproduce logical lines in such a way that the resulting code is usable as reproduced, when copied intact. Since languages vary in this respect, it means reproducing the text in a way that will be acceptable to the target interpretation. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Mar 19th, 2007, 10:48 PM	#17
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 843 Rep Power: 3	Here is a shorter version of Arevos' code. It solves the issue of exploding on "<br />" brought up by DaWei. PHP Syntax (Toggle Plain Text) <?php $filename = 'syntax_h.php'; $num_lines = count(file($filename)); ?> <div class="lineNumbers"> <code><?php print implode(range(1, $num_lines), "\n<br />") ?></code> </div> <div class="sourceCode"> <?php highlight_file($filename); ?> </div> <?php $filename = 'syntax_h.php'; $num_lines = count(file($filename)); ?> <div class="lineNumbers"> <code><?php print implode(range(1, $num_lines), "\n<br />") ?></code> </div> <div class="sourceCode"> <?php highlight_file($filename); ?> </div>

Mar 20th, 2007, 4:55 AM	#18
Arevos Programming Guru Join Date: Aug 2005 Location: England Posts: 1,499 Rep Power: 5	I'm don't quite get why "<br />"s would be a problem, assuming the functionality of highlight_file remains the same. Titaniumdecoy's code is a lot neater, however. I'm rather jealous I didn't think of doing it that way, myself

Mar 20th, 2007, 7:33 PM	#19
Styx Programmer Join Date: Mar 2007 Posts: 39 Rep Power: 0	That is interesting =D so finally, it can be shortened to: [php]<?php $file = 'test.php'; echo '<code class="num">', implode(range(1, count(file($file))), '<br />'), '</code>'; highlight_file($file); ?>[/php] css Syntax (Toggle Plain Text) .num { float: left; color: gray; text-align: right; margin-right: 6pt; padding-right: 6pt; border-right: 1px solid gray;} .num { float: left; color: gray; text-align: right; margin-right: 6pt; padding-right: 6pt; border-right: 1px solid gray;}

Mar 20th, 2007, 8:20 PM	#20
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 843 Rep Power: 3	Did you test that code, Styx? It doesn't work in my browser, as the code is shifted below the line numbers. Last edited by titaniumdecoy; Mar 20th, 2007 at 8:38 PM.

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Programming Forums > Web Development and Design > Other Web Development Languages

Presenting source code within html