Regexp.FindAllSubmatchIndex in Go

Posted by GoDoc
Public (Editable by Users)

FindAllSubmatchIndex is the 'All' version of FindSubmatchIndex; it returns a slice of all successive matches of the expression, as defined by the 'All' description in the package comment. A return value of nil indicates no match.

Go
Edit 
package main

import (
	"fmt"
	"regexp"
)

func main() {
	content := []byte(`
	# comment line
	option1: value1
	option2: value2
`)
	// Regex pattern captures "key: value" pair from the content.
	pattern := regexp.MustCompile(`(?m)(?P<key>\w+):\s+(?P<value>\w+)$`)
	allIndexes := pattern.FindAllSubmatchIndex(content, -1)
	for _, loc := range allIndexes {
		fmt.Println(loc)
		fmt.Println(string(content[loc[0]:loc[1]]))
		fmt.Println(string(content[loc[2]:loc[3]]))
		fmt.Println(string(content[loc[4]:loc[5]]))
	}
}