Hi.
I've a litte syntax question. I read a HTML file and change all between the html tag:
fileContent.gsub!( /<html>(.*?)<\/html>/ ) { '<html>foo</html>' }
Now I want to set the tag type dynamicly like this:
tagName = 'html'
fileContent.gsub!( /<html>(.*?)<\/html>/ ) { '<'+tagName+'>foo</'+tagName+'>' }
But how can I insert the var 'tagName' in the first part
( /<html>(.*?)<\/html>/ )
?
Can anybody help me with this small problem?
greetings
Dirk Einecke
Dnia 2004-07-11 19:14, U¿ytkownik Dirk Einecke napisa³:
But how can I insert the var 'tagName' in the first part
( /<html>(.*?)<\/html>/ )
?Can anybody help me with this small problem?
greetings
Dirk Einecke
try:
gsub!( /<(.+)>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }
or even:
gsub!( /<(.+)>(.*?)<\/\1>/,'<\1>foo<\1>' )
Marcin Mielzynski
maybe like this?
tag2='miao'
=> "miao"
'<html>miao</html>'.gsub(/<#{tag}>.*?<\/#{tag}>/, '<'+tag2+'>foo</'+tag2+'>')
=> "<miao>foo</miao>"
otherwise you could use Regexp.compile:
Regexp.compile tag+'.*?'+tag
=> /html.*?html/
or Regexp.new
Regexp.new tag+'.*?'+tag
=> /html.*?html/
but, would'nt it be easier to do:
gsub /<\/?#{tag}>/, tag2
?
il Sun, 11 Jul 2004 19:14:19 +0200, Dirk Einecke <dirk.einecke@gmx.de> ha scritto::
What about ( /<#{tagName}>(.*?)<\/#{tagName}/ )?
Does that solve your problem?
Kristof
On Sun, 11 Jul 2004 19:14:19 +0200, Dirk Einecke wrote:
<snip>
tagName = 'html'
fileContent.gsub!( /<html>(.*?)<\/html>/ ) {
'<'+tagName+'>foo</'+tagName+'>' }But how can I insert the var 'tagName' in the first part
( /<html>(.*?)<\/html>/ )
?Can anybody help me with this small problem?
Dirk Einecke wrote:
Hi.
I've a litte syntax question. I read a HTML file and change all between the html tag:
fileContent.gsub!( /<html>(.*?)<\/html>/ ) { '<html>foo</html>' }
Now I want to set the tag type dynamicly like this:
tagName = 'html'
fileContent.gsub!( /<html>(.*?)<\/html>/ ) { '<'+tagName+'>foo</'+tagName+'>' }But how can I insert the var 'tagName' in the first part
( /<html>(.*?)<\/html>/ )
?Can anybody help me with this small problem?
greetings
Dirk Einecke
I just came across a few regex resources on the web today so I'll post:
Example Regex Expressions (Markup Category)
Regex Cheatsheet (useful despite being .NET)
http://www.regexlib.com/CheatSheet.htm
Regex Coach (free/donationware) GUI tool for both Linux and Windows
http://weitz.de/regex-coach/
Hi.
Marcin Miel¿yñski wrote:
Dnia 2004-07-11 19:14, U¿ytkownik Dirk Einecke napisa³:
But how can I insert the var 'tagName' in the first part
( /<html>(.*?)<\/html>/ )
?Can anybody help me with this small problem?
try:
gsub!( /<(.+)>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }
or even:
gsub!( /<(.+)>(.*?)<\/\1>/,'<\1>foo<\1>' )
But this is only working for the tag "html". If I wont to use an other tag (like "title" or "head") I can not use your solution. 
greetings
Dirk Einecke
Hi.
gabriele renzi wrote:
'<html>miao</html>'.gsub(/<#{tag}>.*?<\/#{tag}>/, '<'+tag2+'>foo</'+tag2+'>')
That's it. Thank you very much.
greetings
Dirk Einecke
Dnia 2004-07-11 19:30, U¿ytkownik Dirk Einecke napisa³:
But this is only working for the tag "html". If I wont to use an other tag (like "title" or "head") I can not use your solution.
greetings
Dirk Einecke
It should work for any tag
Marcin Miel¿yñski
Hi.
Marcin Miel¿yñski wrote:
It should work for any tag
But I do not unterstand this:
gsub!( /<(.+)>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }
How this code take the var "tagName" ?
greetings
Dirk Einecke
Dnia 2004-07-11 19:40, U¿ytkownik Dirk Einecke napisa³:
How this code take the var "tagName" ?
greetings
Dirk Einecke
Sorry 
I misunderstood Your intention.
Marcin Miel¿yñski
Dirk Einecke wrote:
Hi.
Marcin Miel¿yñski wrote:
It should work for any tag
But I do not unterstand this:
gsub!( /<(.+)>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }
How this code take the var "tagName" ?
greetings
Dirk Einecke
having #{anyvariable} inside of a double quoted string will put the value of anyvariable into the string. So you can do something along the lines of
tagName = "BODY"
and then anywhere in your regular expression where you want to use the value of tagName you put "#{tagName}"
This is discussed in the pickaxe book (Programming Ruby) which is available both in book form through amazon and online at http://www.rubycentral.com/book/\. If you look at the Ruby.new section in Programming Ruby you will find more description of the "#{}" syntax.
-Matthew Margolis
Dirk Einecke wrote:
Hi.
Marcin Miel¿yñski wrote:
It should work for any tag
But I do not unterstand this:
gsub!( /<(.+)>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }
How this code take the var "tagName" ?
Should just be something like:
gsub!( /<(#{tagName})>(.*?)<\/\1>/ ) { "<#{$1}>foo</#{$1}>" }