VerbalExpressions is a Java library that helps to construct difficult regular expressions.
Maven Dependency:
<dependency> <groupId>ru.lanwen.verbalregex</groupId> <artifactId>java-verbal-expressions</artifactId> <version>1.8</version> </dependency>
You can use SNAPSHOT dependency with adding to pom.xml:
<repositories> <repository> <id>ossrh</id> <url>https://oss.sonatype.org/content/repositories/snapshots</url> </repository> </repositories>
VerbalExpression testRegex = VerbalExpression.regex() .startOfLine().then("http").maybe("s") .then("://") .maybe("www.").anythingBut(" ") .endOfLine() .build(); // Create an example URL String url = "https://www.google.com"; // Use VerbalExpression's testExact() method to test if the entire string matches the regex testRegex.testExact(url); //True testRegex.toString(); // Outputs the regex used: // ^(?:http)(?:s)?(?:\:\/\/)(?:www\.)?(?:[^\ ]*)$
VerbalExpression testRegex = VerbalExpression.regex() .startOfLine().then("abc").or("def") .build(); String testString = "defzzz"; //Use VerbalExpression's test() method to test if parts if the string match the regex testRegex.test(testString); // true testRegex.testExact(testString); // false testRegex.getText(testString); // returns: def
Builder can be cloned:
VerbalExpression regex = regex(regex().anything().addModifier('i')).endOfLine().build();
Or can be used in another regex:
VerbalExpression.Builder digits = regex().capt().digit().oneOrMore().endCapt().tab(); VerbalExpression regex2 = regex().add(digits).add(digits).build();
Feel free to use any predefined char groups:
regex().wordChar().nonWordChar() .space().nonSpace() .digit().nonDigit()
Define captures:
String text = "aaabcd"; VerbalExpression regex = regex() .find("a") .capture().find("b").anything().endCapture().then("cd").build(); regex.getText(text) // returns "abcd" regex.getText(text, 1) // returns "b"
You can view all implementations on VerbalExpressions.github.io
[ Javascript - PHP - Python - C# - Objective-C - Ruby - Groovy - Haskell - C++ - ... (moarr) ]
With help of this tutorial: https://dracoblue.net/dev/uploading-snapshots-and-releases-to-maven-central-with-travis/