Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

/
/
g

Test String

Substitution

Processing...

Code Generator

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(<span\b[^"]+class="TagsStyle"[^>]*>|(?!\A)\G)([^,<]+)(,?\s*)"#).unwrap(); let string = "<div align=\"center\"> <span class=\"CatTStyle\">Category:</span> <span class=\"CatStyle\">PHYSIOTHERAPY</span> <br> <br> <span class=\"BusTStyle\">Business Name:</span> <span class=\"BusStyle\">Physio</span> <br> <span class=\"PhTStyle\">Phone:</span> <span class=\"PhStyle\"><a onclick=\"_gaq.push(['_trackEvent', 'Phone', 'Click to Call', document.title])\" href=\"tel:555 5555\">555 5555 <img src=\"img/call.png\"></a></span> <br> <span class=\"AddrTStyle\">Address:</span> <span class=\"AddrStyle\">1 Street Rd, Town, Country</span> <br> <span class=\"EmlTStyle\">Email:</span> <span class=\"EmlStyle\"><a onclick=\"_gaq.push(['_trackEvent', 'Email', 'Click to Email', document.title])\" href=\"mailto:email@email.com\">email@email.com</a></span> <br> <br> <span class=\"WsTStyle\">Website:</span> <span class=\"WsStyle\"><a onclick=\"_gaq.push(['_trackEvent', 'Website', 'Click to Website', document.title])\" href=\"http://www.webiste.com\">www.website.com</a></span> <br> <br> <span class=\"TagsTStyle\">PRODUCTS / SERVICES:</span> <span class=\"TagsStyle\">PHYSIOTHERAPY, BACK PAIN, SPINE INJURY</span> <br> </div> <script async type=\"text/javascript\"> if ($(window).width() > 800) {document.write(\"</td><td align='center' valign='top' width='350'>\");} if ($(window).width() < 800) {document.write(\"</td></tr><tr><td align='center' valign='top' width='350'>\");} </script> <br> <div id=\"map\" align=\"left\" style=\"text-align:left;\"></div> <script type=\"text/javascript\"> var address='1 Street Rd, Town, Country'; var map = new google.maps.Map(document.getElementById('map'), { mapTypeId: google.maps.MapTypeId.TERRAIN, zoom: 15 }); var geocoder = new google.maps.Geocoder(); geocoder.geocode({ 'address': address }, function(results, status) { if(status == google.maps.GeocoderStatus.OK) { new google.maps.Marker({ position: results[0].geometry.location, map: map }); map.setCenter(results[0].geometry.location); } }); </script> "; let substitution = "\\1<a href=\"../search.php?searchQuery=\\2\">\\2</a>\\3"; // result will be a String with the substituted value let result = regex.replace_all(string, substitution); println!("{}", result); }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/