Regexp with Ruby

Ruby
1

Hallo @ all,

I have to replace in a File the image tags with an other!

File Data:

Personal und Organisation

Will scan this image tag:

Personal und Organisation

I already tested this with the follow code:

…scan(/<img.>/m)
and with
…scan(/<img.?>/m)

But the result was always:

Personal und Organisation

I hope someone can help me! Thanks a lot!

Kind Regards
Ajay
2

On Thu, 16 Nov 2006, Ajay Vijey wrote:

Hallo @ all,

I have to replace in a File the image tags with an other!

File Data:

    [trimmed]

and with

I hope someone can help me! Thanks a lot!

I’d agree with your choice of regexp. I think we need to see more of
the surrounding code to fix this.

Kind Regards
Ajay

    Hugh
3

Hugh S. wrote:

I’d agree with your choice of regexp. I think we need to see more of
the surrounding code to fix this.

rubyscript

datei_new = IO.read(“index.htm”)
datei_regexp = datei_new.scan(/(<img.*>)/m)

puts datei_regexp

index.htm

test
Personal und Organisation
4

On 11/16/06, Paul L. [email protected] wrote:

data = File.read(“sample.html”)

–
Paul L.
http://www.arachnoid.com

If i were to do this…I would use hpricot.

5

Ajay Vijey wrote:

puts datei_regexp

Works for me with datei_new.scan(/(<img.?>)/m) (the .? performs a
non-greedy match so it stops with the smallest match it can make,
rather than the longest)

The parentheses you have around the text of the regexp are unnecessary,
they cause the results to be more deeply nested in arrays. You should
use /<img.*?>/m

–Ken B.

6

Ajay Vijey wrote:

Hallo @ all,

I have to replace in a File the image tags with an other!

As another poster has pointed out, you aren’t showing enough code for an
analysis, and, while you are replacing tags, please reformat your IMG
tags
thus:

Note the self-closing form. This won’t bother older browsers, and it
will
allow you to meet the newer (X)HTML standards as well.

Here is sample program that extracts all the IMG tags from a Web page
(of
both the old and new varieties):

#!/usr/bin/ruby -w

data = File.read(“sample.html”)

extract = data.scan(%r{<img.*?/>}m)

puts extract.join("\n")

This outputs from my sample page: