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Changing an array into a string

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chrismassey

chrismassey

Programmer
Aug 24, 2007
264
GB
Hello,

I am currently using a rich text area to edit HTML pages. The idea is to open a HTML file using...

Code: 
open (LOG, "$initial_path$path_carry") || Error('open', 'file');
flock (LOG, 2) || Error('lock', 'file');
@edit_page = <LOG>;
close (LOG) || Error ('close', 'file');

My first question: Is this the best way to open a file? Because I have never understood why the file should be opened into an array? Why not into a scaler?

I then take the contents of the HTML file (@edit_page) and use this as the rich test areas value...

However, it doesn't like me using an array (@ symbol) therefore it doesn't display properly. If I use a scaler variable then it works fine.

If I could turn the array into a scaler (string), then this should work fine.

My second question: How can I print the contents of the file into the rich text area.

If you would like to see this part of the script let me know.

Thank you,

Chris
 
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Okay stupid question really...

I used:
Code: 
$scaler = "@array";

But its still not working... I think its possibly something to do with the <html> <body> etc tags
 
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Right I think I have norrowed down my problem. In the source code of the webpage, at the end of the @array that has been printed into the variable, it leaves a space like this (I have labelled the array contents as ARRAY VALUE:

Code: 
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;
oFCKeditor.BasePath	= 'fckeditor/' ;
oFCKeditor.Height	= 400 ;
oFCKeditor.Value	= 'ARRAY VALUE
' ;
oFCKeditor.Create() ;

I think this is messing with the javascript and it should be like this:

Code: 
var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;
oFCKeditor.BasePath	= 'fckeditor/' ;
oFCKeditor.Height	= 400 ;
oFCKeditor.Value	= 'ARRAY VALUE' ;
oFCKeditor.Create() ;

Any ideas on removing the line space...

I thought about maybe removing the ' ; and adding ' ; to the end of the array...

Ill try it
 
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Nothings working :s ill post my code anyway:

For a working demo:

For the page I am working on:
1) go to 2) Click Open
3) Locate a .htm page
4) Click Edit Page

Code: 
################################
## -Begin- Edit Page Template ##
################################

##### if Edit Page button pressed
if ($edit_pageb) {

##### Open page into variable
open (LOG, "$initial_path$path_carry") || Error('open', 'file');
flock (LOG, 2) || Error('lock', 'file');
@edit_page = <LOG>;
close (LOG) || Error ('close', 'file');

$edit_page2 = "@edit_page";

print "Content-type: text/html\n\n";
print <<"HTML code";
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL unfurl="true"]http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">[/URL]
<!--
 * FCKeditor - The text editor for Internet - [URL unfurl="true"]http://www.fckeditor.net[/URL]
 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    [URL unfurl="true"]http://www.gnu.org/licenses/gpl.html[/URL]
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    [URL unfurl="true"]http://www.gnu.org/licenses/lgpl.html[/URL]
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    [URL unfurl="true"]http://www.mozilla.org/MPL/MPL-1.1.html[/URL]
 *
 * == END LICENSE ==
 *
 * Sample page.
-->
<html xmlns="[URL unfurl="true"]http://www.w3.org/1999/xhtml">[/URL]
<head>
	<title>Edit Page</title>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<meta name="robots" content="noindex, nofollow" />
	<link href="$initial_url_fckeditor_css" rel="stylesheet" type="text/css" />
	<script type="text/javascript" src="$initial_url_fckeditor_js"></script>
</head>
<body>
	<h1>
	<input type="button" value=" - " onClick="history.go(-1);return true;" style="font-family: Arial; font-size: 10pt; font-weight: bold">&nbsp;<input type="text" name="create_pageb_path" size="40" value="$path_carry" readonly="true" style="font-family: Arial; font-size: 10pt; font-weight: bold; border-style: solid">
	</h1>
	<div>
		
	</div>
	<hr />
	<form action="$script_name" method="post">
		<script type="text/javascript">
<!--
// Automatically calculates the editor base path based on the _samples directory.
// This is usefull only for these samples. A real application should use something like this:
// oFCKeditor.BasePath = '/fckeditor/' ;	// '/fckeditor/' is the default value.
var sBasePath = document.location.pathname.substring(0,document.location.pathname.lastIndexOf('_samples')) ;

var oFCKeditor = new FCKeditor( 'FCKeditor1' ) ;
oFCKeditor.BasePath	= 'fckeditor/' ;
oFCKeditor.Height	= 400 ;
oFCKeditor.Value	= '$edit_page2' ;
oFCKeditor.Create() ;
//-->
		</script>
		<br />
		<input type="submit" name="edit_pageb_execute" value="Change" style="font-size: 10pt; font-family: Arial; font-weight: bold" />
        <input type="hidden" name="drive_carry" value="$drive_label">
	</form>
</body>
</html>
HTML code
##### end if Edit Page button pressed
}

##############################
## -End- Edit Page Template ##
##############################

Cheers
 
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$var = @array
will give you a count of elements in the array where as $#array will give you the last index of the array
if you want to treat an array as a variable you can do ${@array} but it is rare that you will probably need that.

if you printing you can just print @array;

your getting an extra new line because your not chomping your array;
chomp @array;
I always chomp my file's that are pulled into array's as soon as I do it so I don't run into that later.
after you chomp you should be able to do
oFCKeditor.Value = '@edit_page';
I think anyway :)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[noevil]
Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;
 
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I think I lied about the ${@array} :) but you don't need it anyway.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[noevil]
Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;
 
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read file into a scalar:

Code: 
$edit_page = do {local $/; <LOG>};

then:

Code: 
oFCKeditor.Value    = '$edit_page';

but the value of $edit_page might mess with the javascript, especially if there are any single quotes in it. You will have to manually escape any characters that mess up the javascript.



------------------------------------------
- Kevin, perl coder unexceptional! [wiggle]
 
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Okay thanks for your responses...

I tried the different methods and a line was still left :s.

What I have done now is use a normal Text Area box, and on page load the javascript recognizes it and converts it to the rich text area...

Works nicely

Thanks,

Chris
 
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travs,

this will work to stringify the array in the scalar

$scalar = "@array";

this will not:

$scalar = @array;


------------------------------------------
- Kevin, perl coder unexceptional! [wiggle]
 
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for some reason I was thinking you could do ${@array} but that doesn't seem to work :)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[noevil]
Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;
 
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Chris if you really want to know what is going on then loop through the array and print each line and (maybe prepend it with a counter so you can see each line's index) then you can see if you are getting a stray new line or two. If your not chomping data normally then there is a chance that you are getting cascading new lines. If you read/write this file often you could just be making it longer and longer and that will come back to haunt you.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[noevil]
Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;
 
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He really does not want to chomp the array since he is ultimately editing a file. If the array were chomped all the newlines will be removed and the formatting of the file will be lost. He should read the file into a scalar and chomp the scalar, that way only the last newline is removed.

------------------------------------------
- Kevin, perl coder unexceptional! [wiggle]
 
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hmm.. you could be right.. :D

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[noevil]
Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;
 
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travs and Kevin,

I'm going to have a go at looping the array to see where the problem arises. And also try chomping the scaler.

Thank you
 
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