Generate a url slug

From CodeCodex

Warning: You are not logged in.

Your IP address will be recorded in this page's edit history.

A "slug" is a url that is generated given some text (for example, a webpage title) so that the url for a given item is readable for humans.

For example, the url at a store for blue pens, www.afakestore.co.md/?id=123 could use a slug to make it human readable, www.afakestore.co.md/blue-pens?id=123 or simply www.afakestore.co.md/blue-pens

==Implementations==
===Java===
<pre class="java">
package util;

import java.text.Normalizer;
import java.text.Normalizer.Form;
import java.util.Locale;
import java.util.regex.Pattern;

public class Slug {

private static final Pattern NONLATIN = Pattern.compile("[^\\w-]");
  private static final Pattern WHITESPACE = Pattern.compile("[\\s]");

public String makeSlug(String input) {
    String nowhitespace = WHITESPACE.matcher(input).replaceAll("-");
    String normalized = Normalizer.normalize(nowhitespace, Form.NFD);
    String slug = NONLATIN.matcher(normalized).replaceAll("");
    return slug.toLowerCase(Locale.ENGLISH);
  }
}
</pre>

===Perl===
<pre class="perl">
my $input = 'In C#: How do I add "Quotes" around string in a comma delimited list of strings?';

my $length = 20;
$input =~ s/[^a-z0-9]+/-/gi;
$input =~ s/^(.{1,$length}).*/\L$1/;

print "$input\n";
</pre>

===Ruby===
<pre class="ruby">
def seo_friendly(str)
  str.strip.downcase.gsub /\W+/, '-'
end
</pre>

===Python===
Using django.
<pre class="python">
from django.template.defaultfilters import slugify
slugify('In C#: How do I add "Quotes" around string in a comma delimited list of strings?')
</pre>

===C#===
<pre class="c#">
private string ToSeoFriendly(string title, int maxLength) {
    var match = Regex.Match(title.ToLower(), "[\\w]+");
    StringBuilder result = new StringBuilder("");
    bool maxLengthHit = false;
    while (match.Success && !maxLengthHit) {
        if (result.Length + match.Value.Length <= maxLength) {
            result.Append(match.Value + "-");
        } else {
            maxLengthHit = true;
            // Handle a situation where there is only one word and it is greater than the max length.
            if (result.Length == 0) result.Append(match.Value.Substring(0, maxLength));
        }
        match = match.NextMatch();
    }
    // Remove trailing '-'
    if (result[result.Length - 1] == '-') result.Remove(result.Length - 1, 1);
    return result.ToString();
}
</pre>

===PHP===
<pre class="php">
function generateUrlSlug($string, $maxlen=0)
{
    $string = trim(preg_replace('/[^a-z0-9]+/', '-', strtolower($string)), '-');
    if ($maxlen && strlen($string) > $maxlen) {
        $string = substr($string, 0, $maxlen);
        $pos = strrpos($string, '-');
        if ($pos > 0) {
            $string = substr($string, 0, $pos);
        }
    }
    return $string;
}
</pre>

[[Category:Java]]
[[Category:Perl]]
[[Category:Ruby]]
[[Category:Python]]
[[Category:C#]]
[[Category:PHP]]

Syntax Highlighting
To markup your code add a <pre> tag before your code and </pre> after. To render a specific language, change the opening tag to <pre class="java"> replacing 'java' with one of the available languages.

Most Common Languages
C++: <pre class="c++">, C#: <pre class="c#">, Java: <pre class="java">, JavaScript: <pre class="js">, PHP: <pre class="php">, Python: <pre class="python">, Ruby: <pre class="ruby">, VB: <pre class="vb">, see full list.

Copyright Notice
Please do not submit copyrighted work with permission. All contributions to CodeCodex are considered to be released under the terms of the GNU Free Documentation License (see CodeCodex:Copyrights for details). If you don't want your code to be edited mercilessly and redistributed at will, then don't submit it here.

Submit

Summary:

Cancel | Editing help (opens in new window)

Retrieved from "http://www.codecodex.com/wiki/Generate_a_url_slug"