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➜ MUSHclient
➜ Lua
➜ string finding a whole word only?
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string finding a whole word only?
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| Posted by
| Rivius
(99 posts) Bio
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| Date
| Fri 06 May 2011 05:56 PM (UTC) |
| Message
| I was wondering what the regex syntax would be for finding a word would look like.
For example:
string.find("banana bananapeel", "banana")
returns true on both banana and bananapeel. However, I want it to strictly match just the word "banana". How would I do this? | | Top |
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| Posted by
| Twisol
USA (2,257 posts) Bio
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| Date
| Reply #1 on Fri 06 May 2011 06:27 PM (UTC) |
| Message
| Lua's built-in pattern matching library doesn't really have a word-border match, but PCRE does:
local re = rex.new("\bbanana\b")
-- re can be created once and used many times
local s, e, matches = re:match("banana bananapeel")
http://www.gammon.com.au/forum/?id=4905 |
'Soludra' on Achaea
Blog: http://jonathan.com/
GitHub: http://github.com/Twisol | | Top |
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| Posted by
| Fiendish
USA (2,535 posts) Bio
Global Moderator |
| Date
| Reply #2 on Fri 06 May 2011 08:15 PM (UTC) |
| Message
| Lua can do anything!
my_string = "bananaphone banana"
find_me = "banana"
start,finish = string.find(string.gsub(my_string,"(.*)"," %1 "), "[^%a]"..find_me.."[^%a]")
finish = finish-2
:D |
https://github.com/fiendish/aardwolfclientpackage | | Top |
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| Posted by
| Nick Gammon
Australia (23,140 posts) Bio
Forum Administrator |
| Date
| Reply #3 on Fri 06 May 2011 10:26 PM (UTC) |
| Message
| Also see:
Scroll down to near the bottom about the "frontier pattern". That does exactly what you want, because it detects the transition between letters and non-letters. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
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