Convert Relative Paths to Absolute Using Regular Expressions

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submitted by rimsystems(6119) 4 years, 8 months ago

I ran into a situation where I needed to screen scrape some content from a site and display it on my own site. This works really well except for dependent files like javascripts, SWFs and images that had src attributes with relative paths. So I figured it wouldn't be that hard to create a helper method to find and replace them using Regular Expressions.

2 comments |category: Regular Expressions |Views: 134
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posted by aquinas(20) 4 years, 8 months ago 0

The code is wrong.

It will not output

img src="http://www.nontalk.com/images/dot.gif, it will output img src="http://www.nontalk.com/mages/dot.gif because it says: match src|href followed by any character that is not h, t, or p. If the url started with h or t or p, the regex wouldn't match at all. I think he wanted a negative lookahead rather than a negated character class. E.g., (?!http)

posted by nontalk(0) 4 years, 8 months ago 0

good catch! You are right. I updated the code.

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