Strings extension for CEL — mirrors ext.Strings() from cel-go.

Provides extended string functions. Most string methods (charAt, indexOf, substring, split, join, lowerAscii, upperAscii, trim, replace, reverse, lastIndexOf) are available as built-ins. This module adds explicit registration and the strings.quote global function.

Usage

env = Celixir.Environment.new() |> Celixir.Ext.Strings.register()
Celixir.eval!(~s|strings.quote("hello\nworld")|, env)
# => ""hello\\nworld""

Functions (method style, on strings)

• str.charAt(int) — character at index
• str.indexOf(string) / str.indexOf(string, int) — first occurrence index
• str.lastIndexOf(string) / str.lastIndexOf(string, int) — last occurrence
• str.substring(int) / str.substring(int, int) — substring
• str.split(string) / str.split(string, int) — split into list
• str.join() / str.join(string) — join list of strings
• str.lowerAscii() — ASCII lowercase
• str.upperAscii() — ASCII uppercase
• str.trim() — trim leading/trailing whitespace
• str.replace(old, new) / str.replace(old, new, int) — replace substrings
• str.reverse() — reverse characters
• strings.quote(string) — safely quote a string for printing