On 22 August 2010 14:52, johnwerry <john.we...@gmail.com> wrote:
> Trying to get the following gsub call working to replace text of url
> with link of the url. I know I have to add slashes, but I am
> apparently missing some, somewhere as I can never get it to not error
> out.
>
> txt = txt.gsub(/\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|
> ([^[:punct:]\s]|/)))/,'<a href="#{0}">#{0}</a>');
>
> Here is the "add slashes" version of the first parameter, but this
> errors out at runtime. What am I missing?
>
> /\\b(([\\w-] ://?|www[.])[^\\s()<>] (?:\\([\\w\\d] \\)|([^[:punct:]\
> \s]|/)))/
>
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>
Can you give some examples, so that we can check the regex.
Based upon what you've supplied ...
\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))
Options: case insensitive; ^ and $ match at line breaks
Assert position at a word boundary «\b»
Match the regular expression below and capture its match into
backreference number 1
«(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))»
Match the regular expression below and capture its match into
backreference number 2 «([\w-]+://?|www[.])»
Match either the regular expression below (attempting the next
alternative only if this one fails) «[\w-]+://?»
Match a single character present in the list below «[\w-]+»
Between one and unlimited times, as many times as
possible, giving back as needed (greedy) «+»
A word character (letters, digits, and underscores) «\w»
The character “-” «-»
Match the characters “:/” literally «:/»
Match the character “/” literally «/?»
Between zero and one times, as many times as possible,
giving back as needed (greedy) «?»
Or match regular expression number 2 below (the entire group
fails if this one fails to match) «www[.]»
Match the characters “www” literally «www»
Match the character “.” «[.]»
Match a single character NOT present in the list below «[^\s()<>]+»
Between one and unlimited times, as many times as possible,
giving back as needed (greedy) «+»
A whitespace character (spaces, tabs, and line breaks) «\s»
One of the characters “()<>” «()<>»
Match the regular expression below «(?:\([\w\d]+\)|([^[:punct:]\s]|/))»
Match either the regular expression below (attempting the next
alternative only if this one fails) «\([\w\d]+\)»
Match the character “(” literally «\(»
Match a single character present in the list below «[\w\d]+»
Between one and unlimited times, as many times as
possible, giving back as needed (greedy) «+»
A word character (letters, digits, and underscores) «\w»
A single digit 0..9 «\d»
Match the character “)” literally «\)»
Or match regular expression number 2 below (the entire group
fails if this one fails to match) «([^[:punct:]\s]|/)»
Match the regular expression below and capture its match into
backreference number 3 «([^[:punct:]\s]|/)»
Match either the regular expression below (attempting the
next alternative only if this one fails) «[^[:punct:]\s]»
Match a single character NOT present in the list below
«[^[:punct:]\s]»
A character in the POSIX character class “punct” «[:punct:]»
A whitespace character (spaces, tabs, and line breaks) «\s»
Or match regular expression number 2 below (the entire
group fails if this one fails to match) «/»
Match the character “/” literally «/»
Created with RegexBuddy
--
Richard Quadling.
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