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Regular Expression Pocket Reference, 2nd Edition
book

Regular Expression Pocket Reference, 2nd Edition

by Tony Stubblebine
July 2007
Intermediate to advanced content levelIntermediate to advanced
128 pages
2h 39m
English
O'Reilly Media, Inc.
Content preview from Regular Expression Pocket Reference, 2nd Edition

Examples

Example 1-25. Simple match

//Find Spider-Man, Spiderman, SPIDER-MAN, etc.
    var dailybugle = "Spider-Man Menaces City!";

    //regex must match entire string
    var regex = /spider[- ]?man/i;

    if (dailybugle.search(regex)) {
      //do something
    }

Example 1-26. Match and capture group

//Match dates formatted like MM/DD/YYYY, MM-DD-YY,...
    var date = "12/30/1969";
    var p =
      new RegExp("^(\\d\\d)[-/](\\d\\d)[-/](\\d\\d(?:\\d\\
d)?)$");

    var result = p.exec(date);
    if (result != null) {
      var month = result[1];
      var day   = result[2];
      var year  = result[3];

Example 1-27. Simple substitution

//Convert <br> to <br /> for XHTML compliance
    String text = "Hello world. <br>";

    var pattern = /<br>/ig;

    test.replace(pattern, "<br />");

Example 1-28. Harder substitution

//urlify - turn URLs into HTML links
   var text = "Check the web site, http://www.oreilly.com/catalog/regexppr.";
   var regex =
        "\\b"                       // start at word boundary
     +  "("                         // capture to $1
     +  "(https?|telnet|gopher|file|wais|ftp) :"
                                    // resource and colon
     +  "[\\w/\\#~:.?+=&%@!\\-]+?"  // one or more valid chars
                                    // take little as possible
     +  ")"
     +  "(?="                       // lookahead
     +  "[.:?\\-]*"                 // for possible punct
     +  "(?:[^\\w/\\#~:.?+=&%@!\\-]"// invalid character
     +  "|$)"                       // or end of string
     +  ")";

    text.replace(regex, "<a href=\"$1\">$1</a>");
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Publisher Resources

ISBN: 9780596514273Errata Page