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How to change this regular expression to be case insenstive (looking for src tag)

Answer 1

+6 A:

Create the pattern with the CASE_INSENSITIVE flag. See Pattern.compile(String, int). This will affect the entire string, which means the img also.

Or the cheap way, change src to [Ss][Rr][Cc]. This will just affect the src portion.

lavinio 2009-07-09 06:06:48

Thanks; just curious; do you mean efficient/faster when you say "cheap way" here?

Krishna Kumar 2009-07-09 06:32:43

I meant it was the lowest-effort way.

lavinio 2009-07-09 06:37:50

Compile it once and reuse. more efficient/faster. :)

Ratnesh Maurya 2009-07-09 06:42:56

Answer 2

A:

Have a look here

You have to set case insensitivity in the pattern constructor.

Peter 2009-07-09 06:08:31

Answer 3

+2 A:

It seems to me that if you want to process HTML, the best way to go is to use a real HTML parser.

Although I am not familiar with Java, there seems to be quite a few to choose from: Open Source HTML Parsers in Java.

This will allow you to deal with cases like an other attribute being before the src and including the character '>', which is valid HTML, or the src attribute including a quote, and probably a few other unlikely but possible trickeries.

mirod 2009-07-09 06:16:14

Answer 4

A:

Off the top of my head:
You might replace the src with [S|s][R|r][C|c] if you only want case insensitivity applied to src.

KT

Karl T. 2009-07-09 06:19:10

Without the actual |'s, of course. :)

lavinio 2009-07-09 06:21:41

Answer 5

+1 A:

You can set the expression to case insesitve using "(?i)"

Regular expression: (?i)<img[^>]+src\s*=\s*['"]([^'"]+)['"][^>]*>

for just a part of the expression, use "(?i:part)"

Regular expression: <img[^>]+(?i:src)\s*=\s*['"]([^'"]+)['"][^>]*>

or just do it using the second argument of Pattern.compile

Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);

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Carlos Heuberger 2009-07-09 09:07:35

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How to change this regular expression to be case insenstive (looking for src tag)

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