package reqline

import (
	"fmt"
	"bytes"
)

// parseRequestLine parses the first HTTP request line
func (r *T) Parse(b []byte) error {

	/* (1) Split by ' ' */
	parts := bytes.Split(b, []byte(" "))

	/* (2) Fail when missing parts */
	if len(parts) != 3 {
		return fmt.Errorf("Malformed Request-Line must have 3 space-separated elements, got %d", len(parts))
	}

	/* (3) Extract HTTP method */
	err := r.extractHttpMethod(parts[0])
	if err != nil {
		return err
	}

	/* (4) Extract URI */
	err = r.extractURI(parts[1])
	if err != nil {
		return err
	}

	/* (5) Extract version */
	err = r.extractHttpVersion(parts[2])
	if err != nil {
		return err
	}

	return nil

}