Regex Matching Negation to Ebay Sites
I Have a Regex to Match Any Ebay Sites: (? I)^((Http|Https): //)? (\W+\.)*Ebay. (\W+.)+ I Want to Negate It, to Match All, Except This Sites I Tried: (? !...
I have a regex to match any ebay sites:
(?i)^((http|https)://)?(\w+\.)*ebay.(\w+.)+
I want to negate it, to match all, except this sites
I tried:
(?! pattern )
(?!pattern)
[^pattern]
But nothing worked. Maybe my first regex is too unoptimal?
Testcase in java:
Pattern queryPattern = Pattern.compile("(?i)^((http|https)://)?(\\w+\\.)*ebay.(\\w+.)+");
List<String> queries = new LinkedList();
queries.add("");
queries.add("");
queries.add("");
queries.add("");
queries.add("");
queries.add("ttt.ebay.com");
queries.add("ru.ebay.com");
queries.add("test.ru.ebay.com");
queries.add("test.ru.ebAY.com");
queries.add("ebay.com");
queries.add("naebay.com");
queries.add("ru.naebay.ru");
queries.add("blah.ru");
for (String query : queries) {
System.out.println(query + " " + queryPattern.matcher(query).find());
}
2 Answers
Obvious response:
Pattern queryPattern = Pattern.compile("(?i)^((http|https)://)?(\\w+\\.)*ebay.(\\w+.)+");
List<String> queries = new LinkedList<String>();
...
for (String query : queries) {
if (queryPattern.matcher(query).find() == false) {
System.out.println("Non Ebay site: " + query + " " + queryPattern.matcher(query).find());
}
}
Output:
Non Ebay site: naebay.com false
Non Ebay site: ru.naebay.ru false
Non Ebay site: blah.ru false
Avoid regex to parse irregular patterns like url,html.Use URL class.
To solve your problem You can use (?!.*ebay) at the start of your pattern i.e after ^
Instead of parsing with regex you could use URL class like this
URL url = new URL(yourURL);
if(!url.getHost().contains("ebay")){}
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