I want to replace the below statement
ImageIcon("images/calender.gif");
with
ImageIcon(res.getResource("images/calender.gif"));
Can anyone suggest a regex to do this in eclipse.Instead of "calender.gif" any filename can come.
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2 Answers
You can find this pattern (in regex mode):
ImageIcon\(("[^"]+")\)
and replace with:
ImageIcon(res.getResource($1))
The \( and \) in the pattern escapes the braces since they are to match literally. The unescaped braces (…) sets up capturing group 1 which matches the doublequoted string literal, which should not have escaped doublequotes (which I believe is illegal for filenames anyway).
The […] is a character class. Something like [aeiou] matches one of any of the lowercase vowels. [^…] is a negated character class. [^aeiou] matches one of anything but the lowercase vowels.
The + is one-or-more repetition, so [^"]+ matches non-empty sequence of everything except double quotes. We simply surround this pattern with " to match the double-quoted string literal.
So the pattern breaks down like this:
literal( literal)
| |
ImageIcon\(("[^"]+")\)
\_______/
group 1
In replacement strings, $1 substitutes what group 1 matched.
References
- regular-expressions.info
- Character Class, Repetition, Brackets
- Examples/Programming Constructs - Strings - has patterns for strings that may contain escaped doublequotes
answered Aug 11, 2010 at 12:26
polygenelubricants
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2 Comments
Emil
Can you explain the above regex.
polygenelubricants
@Emil: note that this will not handle e.g.
ImageIcon(getPath() + getFilename()) and funky things like that. A general Java expression is not regular, so a universal solution should use something other than regex.Ctrl-F
Find: ImageIcon\("([^\"]*)"\);
Replace with: ImageIcon(res.getResource("\1"));
Check Regular Expressions checkbox.
