package main

import (
	"fmt"
	"strings"
)

func (i *iface) ProcPCI(devpath string) (seg string, err error) {
	var (
		domain, bus, device, function int
	)
	if _, err = fmt.Sscanf(devpath, "%x:%x:%x.%x", &domain, &bus, &device, &function); err != nil {
		err = ErrInvalidPCIFormat
		return
	}
	var name strings.Builder
	if domain != 0 {
		name.WriteString(fmt.Sprintf("P%d", domain))
	}
	name.WriteString(fmt.Sprintf("p%ds%df%d", bus, device, function))
	seg = name.String()
	return
}