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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.net.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	public static void main (String[] args) throws java.lang.Exception
  12. 	{
  13. 		ArrayList<String> urls = new ArrayList<String>();
  14. 		urls.add(null);
  15. 		urls.add("");
  16. 		urls.add("file:///home/user/test.html");
  17. 		urls.add("file:///home/user/test.html?id=902");
  18. 		urls.add("file:///home/user/test.html#footer");
  19. 		urls.add("http://e...content-available-to-author-only...e.com");
  20. 		urls.add("http://w...content-available-to-author-only...e.com");
  21. 		urls.add("http://w...content-available-to-author-only...e.txt");
  22. 		urls.add("http://e...content-available-to-author-only...e.com/");
  23. 		urls.add("http://e...content-available-to-author-only...e.com/a/b/c/test.html");
  24. 		urls.add("http://e...content-available-to-author-only...e.com/a/b/c/test.html?param=value");
  25. 		urls.add("http://e...content-available-to-author-only...e.com/a/b/c/test.html#anchor");
  26. 		urls.add("http://e...content-available-to-author-only...e.com/a/b/c/test.html#anchor?param=value");
  27.  
  28. 		for (String url : urls) {
  29. 			System.out.println("Input: \"" + url + "\" Output: \"" + getFileNameFromURL(url) + "\"");
  30. 		}
  31.  
  32. 	}
  33.  
  34. 	public static String getFileNameFromURL(String url) {
  35. 		if (url == null) {
  36. 			return "";
  37. 		}
  38. 		try {
  39. 			URL resource = new URL(url);
  40. 			String host = resource.getHost();
  41. 			if (host.length() > 0 && url.endsWith(host)) {
  42. 				// handle ...example.com
  43. 				return "";
  44. 			}
  45. 		}
  46. 		catch(MalformedURLException e) {
  47. 			return "";	
  48. 		}
  49.  
  50. 		int startIndex = url.lastIndexOf('/') + 1;
  51. 		int length = url.length();
  52.  
  53. 		// find end index for ?
  54. 		int lastQMPos = url.lastIndexOf('?');
  55. 		if (lastQMPos == -1) {
  56. 			lastQMPos = length;	
  57. 		}
  58.  
  59. 		// find end index for #
  60. 		int lastHashPos = url.lastIndexOf('#');
  61. 		if (lastHashPos == -1) {
  62. 			lastHashPos = length;	
  63. 		}
  64.  
  65. 		// calculate the end index
  66. 		int endIndex = Math.min(lastQMPos, lastHashPos);
  67. 		return url.substring(startIndex, endIndex);
  68. 	}
  69. }
Success #stdin #stdout 0.1s 27676KB
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stdin
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Standard input is empty
stdout
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Input: "null" Output: ""
Input: "" Output: ""
Input: "file:///home/user/test.html" Output: "test.html"
Input: "file:///home/user/test.html?id=902" Output: "test.html"
Input: "file:///home/user/test.html#footer" Output: "test.html"
Input: "http://e...content-available-to-author-only...e.com" Output: ""
Input: "http://w...content-available-to-author-only...e.com" Output: ""
Input: "http://w...content-available-to-author-only...e.txt" Output: ""
Input: "http://e...content-available-to-author-only...e.com/" Output: ""
Input: "http://e...content-available-to-author-only...e.com/a/b/c/test.html" Output: "test.html"
Input: "http://e...content-available-to-author-only...e.com/a/b/c/test.html?param=value" Output: "test.html"
Input: "http://e...content-available-to-author-only...e.com/a/b/c/test.html#anchor" Output: "test.html"
Input: "http://e...content-available-to-author-only...e.com/a/b/c/test.html#anchor?param=value" Output: "test.html"
https://ideone.com/uFWxTL
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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