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A simple Groovy script to scrape all URLs from a given string and download the content from those URLs
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| import java.util.regex.Matcher | |
| import java.util.regex.Pattern | |
| Pattern urlPattern = Pattern.compile("(https?|ftps?|file)://([-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|])",Pattern.CASE_INSENSITIVE); | |
| String urlString = """This is a big string with lots of Image URL like: http://i.istockimg.com/file_thumbview_approve/69656987/3/stock-illustration-69656987-vector-of-flat-icon-life-buoy.jpg and | |
| http://i.istockimg.com/file_thumbview_approve/69943823/3/stock-illustration-69943823-beach-ball.jpg few others below | |
| http://i.istockimg.com/file_thumbview_approve/40877104/3/stock-photo-40877104-pollen-floating-on-water.jpg | |
| http://i.istockimg.com/file_thumbview_approve/68944343/3/stock-illustration-68944343-ship-boat-flat-icon-with-long-shadow.jpg | |
| abcdef | |
| www.whatever.com | |
| https://github.com/geongeorge/i-hate-regex | |
| https://www.facebook.com/ | |
| https://www.google.com/ | |
| https://xkcd.com/2293/ | |
| https://this-shouldn't.match@example.com | |
| http://www.example.com/ | |
| ftp://this.new.server.com/ | |
| """ | |
| Matcher matcher = urlPattern.matcher(urlString); | |
| while (matcher.find()) { | |
| String address = matcher.group() | |
| println("Got URL: " + address); | |
| new File("./" + address.tokenize("/").last()).withOutputStream { out -> | |
| out << new URL(address).openStream() | |
| } | |
| } | |
| // References: | |
| // 1. http://stackoverflow.com/questions/5713558/detect-and-extract-url-from-a-string | |
| // 2. http://stackoverflow.com/questions/4674995/groovy-download-image-from-url |
And concerning the URL extraction itself, I did it in 2 steps (the 1st is just a find/grep, the 2nd is a pipe of several "sed" with a sort/uniq), as follows - with final list in "/tmp/url2.txt":
rm -f /tmp/url1.txt /tmp/url2.txt
for file in `find content/ -name "*.md" -print`; do grep "\((http\S*)\)" $file >> /tmp/url1.txt ; done
sed -r 's/.*(\((.*)\)).*/\2/' /tmp/url1.txt | grep http |sed -r 's/\)//g' |sed -r 's/\"//g' |sed -r 's/\/$//g' | sort | uniq > /tmp/url2.txt
Don't know how you can add this to a Groovy script, but if regexps are properly supported, it is certainly possible?
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Here's the list of URLs, you can just test your script on it: note that I have issues with some of them due to 403 (forbidden) - was partly solved by specifying a user-agent to look like a real navigator, but it's not enough for a few of them (?)