Export all struct fields of a go file

toCamel.go

package main

import (
	"bytes"
	"fmt"
	"os"
	"regexp"
	"strings"

	"github.com/iancoleman/strcase"
)

var in = regexp.MustCompile("\t(\\w+)")

func main() {
	input, err := os.ReadFile(os.Args[1])
	if err != nil {
		panic(err)
	}
	locs := in.FindAllIndex(input, 1<<31)

	for _, i := range locs {
		buf := bytes.Buffer{}
		buf.Grow(i[1] - i[0])

		buf.WriteRune('\t')
		buf.WriteString(strcase.ToCamel(string(input[i[0]:i[1]])))
		buf.WriteString(strings.Repeat(" ", buf.Cap()-buf.Len()))

		for j := 0; j < i[1]-i[0]; j++ {
			input[i[0]+j] = buf.Bytes()[j]
		}
	}
	fmt.Print(string(input))
}