1.6 KiB
1.6 KiB
| isHidden | menupriority | kind | created_at | title | tags | |||
|---|---|---|---|---|---|---|---|---|
| false | 1 | article | 2009-09-22T22:13:25+02:00 | replace all except some part |
|
My problem is simple:
I want to filter a text except some part of it. I can match easily the part I don't want to be filtered. For example
...
text
...
BEGIN not to filter
...
text
...
END not to filter
...
text
...
I searched a better way to do that, but the best I can do is using split and scan.
def allExceptCode( f, content )
regexp=/]*>.*?<\/code>/m
tmp=""
mem=[]
content.scan(regexp).each do |c|
mem <<= c
end
i=0
content.split(regexp).each do |x|
tmp <<= send(f,x)
if not mem[i].nil?
tmp <<= mem[i]
i+=1
end
end
tmp
end
An usage is:
def filter(content)
content.gsub(/e/,'X')
end
...
allExceptCode(:filter, content)
...
A better syntax would be:
# !!!!!!!!!! THIS SYNTAX DOES NOT WORK !!!!!!! #
def allExceptCode( f, content )
regexp=/]*>.*?<\/code>/m
tmp=""
content.split(regexp).each do |x|
separator=$&
tmp <<= send(f,x)
if not separator.nil?
tmp <<= separator
end
end
tmp
end
I would expect the split make a search on a regular expression and then give the matched expression into the $& variable. But it is not the case.
If someone know a nicer way to do that I will be happy to know how.