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Regular Expressions

Functions for using regular expressions to manipulate strings.

Authors and contributors to this experimental extension: Add00.

Conditions, actions and expressions to use regular expressions with strings, such as:

  • Find the position of pattern in a string
  • Find a pattern in a string
  • Split a string by a pattern
  • Check if a string matches a pattern
  • Replace patterns in a string with another string

Tip

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Actions

Find all matches for a regex pattern
Builds an array containing all matches for a regex pattern.

See parameters & details
  • Parameter 1 (🔤 String): Pattern
  • Parameter 2 (🔤 String): RegEx flags
  • Parameter 3: 🔤 String
  • Parameter 4 (🔤 String): The name of the variable to store the result in

Technical note: parameters 0, 5 are internal parameters handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is RegEx::GetAllMatches.

Find all matches with their groups for a regex pattern
Builds an array containing for each regex pattern match an array with the match followed by its regex groups.

See parameters & details
  • Parameter 1 (🔤 String): Pattern
  • Parameter 2 (🔤 String): RegEx flags
  • Parameter 3: 🔤 String
  • Parameter 4 (🔤 String): The name of the variable to store the result in

Technical note: parameters 0, 5 are internal parameters handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is RegEx::GetAllMatchesAndGroups.

Find first match with groups for a regex pattern
Builds an array containing the first match for a regex pattern followed by the regex groups.

See parameters & details
  • Parameter 1 (🔤 String): Pattern
  • Parameter 2 (🔤 String): Flags
  • Parameter 3: 🔤 String
  • Parameter 4 (🔤 String): Variable name

Technical note: parameters 0, 5 are internal parameters handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is RegEx::GetFirstMatchAndGroups.

Split a string into an array
Split a string by each part of it that matches a regex pattern and stores each part into an array.

See parameters & details
  • Parameter 1 (🔤 String): The pattern to split by
  • Parameter 2 (🔤 String): RegEx flags
  • Parameter 3 (🔤 String): The string to split by the pattern
  • Parameter 4 (🔤 String): The name of the variable to store the result in

Technical note: parameters 0, 5 are internal parameters handled by GDevelop.

Technical note: this action internal type (in GDevelop JSON) is RegEx::Split.

Conditions

String matches regex pattern
Checks if a string matches a regex pattern.

See parameters & details
  • Parameter 1 (🔤 String): The pattern to check for
  • Parameter 2 (🔤 String): RegEx flags
  • Parameter 3 (🔤 String): The string to check for a pattern

Technical note: parameters 0, 4 are internal parameters handled by GDevelop.

Technical note: this condition internal type (in GDevelop JSON) is RegEx::HasPattern.

Expressions

Expression Description
RegEx::Find(string, string, string) Finds a regex pattern in a string, and returns the index of the position of the match, or -1 if it doesn't match the pattern.
🔤 String Pattern
🔤 String RegEx flags
🔤 String String
RegEx::Replace(string, string, string, string) Replaces a part of a string that matches a regex pattern with another string.
🔤 String The pattern to check for
🔤 String RegEx flags
🔤 String The string to search for pattern matches in
🔤 String The string to replace the matching patterns with

This page is an auto-generated reference page about the Regular Expressions extension for GDevelop, the open-source, AI-powered, cross-platform game engine designed for everyone. Learn more about all GDevelop extensions here.