util.go

// Copyright 2014 Andreas Koch. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package parser

import (
	"bufio"
	"io"
)

// readLine returns a single line (without the ending \n)
// from the input buffered reader.
// An error is returned iff there is an error with the
// buffered reader.
func readLine(bufferedReader *bufio.Reader) (string, error) {
	var (
		isPrefix bool  = true
		err      error = nil
		line, ln []byte
	)

	for isPrefix && err == nil {
		line, isPrefix, err = bufferedReader.ReadLine()
		ln = append(ln, line...)
	}

	return string(ln), err
}

// Get all lines of a given file
func getLines(inFile io.Reader) []string {

	lines := make([]string, 0, 10)
	bufferedReader := bufio.NewReader(inFile)
	line, err := readLine(bufferedReader)
	for err == nil {
		lines = append(lines, line)
		line, err = readLine(bufferedReader)
	}

	return lines
}