TestRegex regexp

 

package net.strong.util;

import org.apache.oro.text.regex.MatchResult;

import org.apache.oro.text.regex.Pattern;

import org.apache.oro.text.regex.PatternCompiler;

import org.apache.oro.text.regex.PatternMatcher;

import org.apache.oro.text.regex.PatternMatcherInput;

import org.apache.oro.text.regex.Perl5Compiler;

import org.apache.oro.text.regex.Perl5Matcher;

import org.apache.oro.text.regex.Perl5Substitution;

import org.apache.oro.text.regex.Util;

public class TestRegex {

public TestRegex() {}

public void parseLog() throws Exception {

String log1=“172.26.155.241 – – [26/Feb/2001:10:56:03 -0500] \”GET /IsAlive.htm HTTP/1.0\” 200 15 “;

String regexp=“(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})\\s-\\s-\\s\\[([^\\]]+)\\]”;

PatternCompiler compiler=new Perl5Compiler();

Pattern pattern=compiler.compile(regexp);

PatternMatcher matcher=new Perl5Matcher();

if (matcher.contains(log1,pattern)) {

MatchResult result=matcher.getMatch();

System.out.println(“IP: “+result.group(1));

System.out.println(“Timestamp: “+result.group(2));

}

}

public void parseHTML() throws Exception {

String html=“<font face=\”Arial, Serif\” size=\”+1\”color=\”red\”>”;

String regexpForFontTag=“<\\s*font\\s+([^>]*)\\s*>”;

String regexpForFontAttrib=“([a-z]+)\\s*=\\s*\”([^\”]+)\””;

PatternCompiler compiler=new Perl5Compiler();

Pattern patternForFontTag=compiler.compile(regexpForFontTag,Perl5Compiler.CASE_INSENSITIVE_MASK);

Pattern patternForFontAttrib=compiler.compile(regexpForFontAttrib,Perl5Compiler.CASE_INSENSITIVE_MASK);

PatternMatcher matcher=new Perl5Matcher();

if (matcher.contains(html,patternForFontTag)) {

MatchResult result=matcher.getMatch();

String attrib=result.group(1);

PatternMatcherInput input=new PatternMatcherInput(attrib);

while (matcher.contains(input,patternForFontAttrib)) {

result=matcher.getMatch();

System.out.println(result.group(1)+“: “+result.group(2));

}

}

}

public void substitutelink() throws Exception {

String link=“<a href=\”http://widgets.acme.com/interface.html#How_To_Trade\”>”;

String regexpForLink=“<\\s*a\\s+href\\s*=\\s*\”http://widgets.acme.com/interface.html#([^\”]+)\”>”;

PatternCompiler compiler=new Perl5Compiler();

Pattern patternForLink=compiler.compile(regexpForLink,Perl5Compiler.CASE_INSENSITIVE_MASK);

PatternMatcher matcher=new Perl5Matcher();

String result=Util.substitute(matcher,

patternForLink,

new Perl5Substitution(“<a href=\”http://newserver.acme.com/interface.html#$1\”>”),

link,

Util.SUBSTITUTE_ALL);

System.out.println(result);

}

public static void main(String[] args) throws Exception {

TestRegex test=new TestRegex();

System.out.println(“\n\nLog Parsing Example”);

test.parseLog();

System.out.println(“\n\nHtml Example 1”);

test.parseHTML();

System.out.println(“\n\nHtml Example 2”);

test.substitutelink();

}

}