Regex Examples for Motoko Regex Engine

Table of Contents

• Regex Examples for Motoko Regex Engine
  • Table of Contents
  • Internet Computer Identifiers
    • Principal ID
    • Account ID

Internet Computer Identifiers

Principal ID

Pattern to validate Principal ID format.

// Anonymous Principal will be rejected
let principalPattern = Regex.Regex("^[a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{3}$", null);
public func validatePrincipalId(id: Text): Bool {
    switch(principalPattern.match(id)) {
        case (#ok(result)) {
            switch(result.status) {
                case (#FullMatch) true;
                case (#NoMatch) false;
            };
        };
        case (#err(_)) false;
    };
};

Account ID

Pattern to validate Account ID format.

// Account ID (32 bytes in hexadecimal)
let accountPattern = Regex.Regex("^[0-9a-f]{64}$", null);
public func validateAccountId(id: Text): Bool {
    switch(accountPattern.match(id)) {
        case (#ok(result)) {
            switch(result.status) {
                case (#FullMatch) true;
                case (#NoMatch) false;
            };
        };
        case (#err(_)) false;
    };
};