Patterns - craterdog/go-component-framework GitHub Wiki
Overview
A pattern string is a sequence of characters that define a regular expression. Each pattern string has the following string format:
$pattern: "none" | REGEX | "any"
The source of this format is Bali Document Notation™ (Bali) defined here.
The none pattern will not match anything whereas the any pattern will match
absolutely anything including an empty string "".
A Quick Example
To whet your appetite, here is some short example code that demonstrates the use of pattern strings.
package main
import (
fmt "fmt"
fra "github.com/craterdog/go-component-framework/v7"
)
func main() {
// Retrieve the class reference.
var class = fra.PatternClass()
// Retrieve a class constant.
var any = class.Any()
fmt.Println(any)
// Create a new pattern string.
var pattern = class.PatternFromString(`"c(.+t)"?`)
fmt.Println(pattern)
// Check for pattern matches.
fmt.Println(pattern.MatchesText("caaat"))
fmt.Println(any.MatchesText("caaat"))
fmt.Println(pattern.MatchesText("kat"))
fmt.Println(any.MatchesText("kat"))
}