# Parsing JSP files and adding a Line

**URL:** <https://www.ruby-forum.com/t/parsing-jsp-files-and-adding-a-line/55392>\
**Category:** Ruby\
**Created:** [March 20, 2006, 7:20pm UTC](https://www.ruby-forum.com/t/parsing-jsp-files-and-adding-a-line/55392 "2006-03-20T19:20:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![thedapp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/da6949/32.png) [@thedapp](https://www.ruby-forum.com/u/thedapp)\
**Post date:** [March 20, 2006, 7:20pm UTC](https://www.ruby-forum.com/t/parsing-jsp-files-and-adding-a-line/55392/1 "2006-03-20T19:20:32Z")

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Basically, I’m still pretty much freshmeat when it comes to Ruby, but  
I’m intrigued by the language and wanted to start playing around w/ it  
for the J2EE project that I’m on.

I wrote some Ruby Code that would find all the jsp’s in our project  
(around 200) and look for a XML-Tag and after this tag it would insert a  
new line w/ another tag… Some basic scripting. But I doubt I’m doing  
it the most efficient way.

Another problem I have is if within the original JSP file, a Tag carries  
over onto the next line. I would ideally like to find a Xml-Tag and  
insert another block after the end of it. What would be the best way of  
doing so? Thanks.

Here’s the relevant code:

def insertStr(fname, str, regexpr, isHeader)  
notAdded = true  
File.open(fname, ‘r+’) do |f| # open file for update  
lines = f.readlines # read into array of lines  
lines.each do |line| # modify lines  
if notAdded  
if line =~ regexpr # If the tag is found  
if isHeader # insert include string  
line \<\< str + “\n”  
else  
line.replace(str + “\n” + line)  
end  
notAdded = false # make sure nothing else can be  
inserted  
end  
end

```
end
f.pos = 0 # back to start
f.print lines # write out modified lines
f.truncate(f.pos) # truncate to new length

```

end # file is automatically closed  
return !notAdded  
end

---

<div class="post-metadata">

**Author:** ![thedapp](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/da6949/32.png) [@thedapp](https://www.ruby-forum.com/u/thedapp)\
**Post date:** [March 21, 2006, 4:34pm UTC](https://www.ruby-forum.com/t/parsing-jsp-files-and-adding-a-line/55392/2 "2006-03-21T16:34:45Z")

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A Xml-Parser might be able to help?

donald dapp wrote:

> Another problem I have is if within the original JSP file, a Tag carries  
> over onto the next line. I would ideally like to find a Xml-Tag and  
> insert another block after the end of it. What would be the best way of  
> doing so? Thanks.