MQLArticles/Utils/StrMatch

StrMatch

A module with a single pattern matching function for strings. Allows comparing a string against a pattern with special characters.

Usage

CSimpleStringMatch::SimpleMatchInString("hello.png", "*.png"); // true

Supported Patterns

Character	Meaning	Example
*	Any sequence of characters, searches up to the farthest occurrence after the *	*.png = any .png file
?	Exactly one character of any kind	?.txt = a.txt, b.txt
^	Exactly one digit (0-9)	file^.csv = file1.csv
~	Any sequence of characters, searches up to the nearest occurrence after the ~	~\\ = Only folder of 1 level

Patterns can be combined freely.

Examples

SimpleMatchInString("hello_word.png", "*.png");     // true
SimpleMatchInString("hello_word.png", ".png*");     // false
SimpleMatchInString("aksdgello",  "????gello");     // true
SimpleMatchInString("123a", "*^^^a");               // false
SimpleMatchInString("file123.txt", "file^^^.txt");  // true
SimpleMatchInString("anything", "*");               // true
SimpleMatchInString("", "*");                       // true
SimpleMatchInString("abc", "??");                   // false

Notes

• ~~ is not supported as a valid pattern. The character after ~ acts as a sequence terminator.
• The pattern ~ or * only equals "anything" when it stands alone.