RegEx

Regular expression engine.

Support for following patterns:

• any ‐ .
• optional ‐ ?
• zero or more repetitions ‐ *
• one or more repetitions ‐ +
• first single match ‐ ^
• last single match ‐ $
• (one|two|three) ‐ group
• [start-end] ‐ range

Support for following special groups:

• word ‐ \w
• not word ‐ \W
• digit ‐ \d
• not digit ‐ \D
• white space ‐ \s
• not white space ‐ \S
• repeat ‐ {least, most}

• New
• Find
• FindFirst
• IsOk
• Match
• MatchExact
• ReplaceAll
• ReplaceFirst

Code example:

output := HttpsClient->New()->QuickGet(Web.HTTP.Url->New(url))->ToString();
output_len := output->Size();
"URL: {$input}, read: {$output_len} character(s)"->PrintLine();

"running regex..."->PrintLine();      
expr := "(href|HREF|src|SRC)=(\"|')(http://|https://|/)?((\\w|\\d|-|_)+(\\.|/)?)+(\\?(\\w|\\d|-|_)+=(\\w|\\d|-|_)+)?(&(\\w|\\d|-|_)+=(\\w|\\d|-|_)+)?(\"|')";

found := Query.RegEx.RegEx->New(expr)->Find(output)<Result>;
"---"->PrintLine();
each(i : found) {
   found->Get(i)->ToString()->PrintLine();
};

New

Default constructor

Find

Finds all occurrences

FindFirst

Matches the first occurrence

IsOk

Check of the regex was parsed correctly

Match

Matches as much of the string as possible

Matches as much of the string as possible

MatchExact

Looks for an exact regex match

ReplaceAll

Replaces all occurrences of the given string

ReplaceFirst

Replaces the first occurrence with the given string