Replace HTML text with a routine

Question

I need a perl/shell script which will replace all the occurences of below HTML code within all the files with text:

<? test_routine ?>

HTML code

<tr>
  <td>
    <label>testlabel</label>
  </td>
</tr>

This HTML code can occur with any number of spaces i.e

<tr><td><label>testlabel</label></td></tr>

is also a valid search criteria (i.e ignore all the spaces)

Can any one please let me know how i can resolve this using perl/shell script. Thank you.

Possible duplicate of Multiline search replace with Perl

tripleee
– tripleee

2016-08-02 08:55:36 +00:00
Commented Aug 2, 2016 at 8:55 — tripleee
– tripleee, Commented Aug 2, 2016 at 8:55

Edoardo Pirovano · Accepted Answer · 2011-08-06 16:33:29Z

1

Here's one line of perl that will do what you need using a regular expression:

$html =~ s/<\s*tr\s*>\s*<\s*td\s*>\s*<\s*label\s*>\s*testlabel\s*<\s*\/label\s*>\s*<\s*\/td\s*>\s*<\s*\/tr\s*>/<? test_routine ?>/gi

answered Aug 6, 2011 at 16:33

Edoardo Pirovano

8,3543 gold badges28 silver badges32 bronze badges

Sign up to request clarification or add additional context in comments.

10 Comments

tripleee Over a year ago

On order to handle matches spanning multiple lines, wrap this in a script which reads the entire file at once, and add a /m modifier to the substitution. perl -0777 -pe 's%from%to%mg'

Edoardo Pirovano Over a year ago

Actually, the /m modifer isn't needed in this case. You're right, though, the whole file has to be read into the $html variable before this line is run.

progster Over a year ago

I printed $html and I'm able see the replaced text. Thanks for that. But how to write this back to the file?. I tried with open outfile, ">test.html";print (outfile "$html");

Edoardo Pirovano Over a year ago

That depends. Could you give a bit more details on how the file is loaded?

progster Over a year ago

my $file = "test.html"; my $a1 = do {local $/ = undef; open my $html, "<", $file; <$a1>}; close $a1;...followed with your statement above...and with my statement above..

|

Collectives™ on Stack Overflow

Replace HTML text with a routine

1 Answer 1

10 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

10 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related