Golang read file Carriage Return - file

Question

Hi i have a implementation to read a file Line Feed, but it does not work to Carriage Return files the implementation is:
file, err := os.Open(filePath)
if err != nil {
ross := int32(1)
fileValidation = append(fileValidation, p.createPharmacyPanelLoaderResultErr(pharmacyPanel, &ross, err.Error(), err.Error()))
return nil, fileValidation, int32(0)
}
scanner := bufio.NewScanner(file)
for i := 0; scanner.Scan(); i++ {
line := scanner.Text()
}
i want to transform this function to can work with both Carriage Return and Line Feed

Answer 1

I took the ScanLines function from the source code and changed it so it works with \r but now it will only work with \r and not \n or \r\n
package main
import (
"bufio"
"bytes"
"fmt"
"os"
)
func ScanLinesWithCR(data []byte, atEOF bool) (advance int, token []byte, err error) {
if atEOF && len(data) == 0 {
return 0, nil, nil
}
if i := bytes.IndexByte(data, '\r'); i >= 0 {
// We have a full newline-terminated line.
return i + 1, data[0:i], nil
}
// If we're at EOF, we have a final, non-terminated line. Return it.
if atEOF {
return len(data), data, nil
}
// Request more data.
return 0, nil, nil
}
func main() {
f, _ := os.Open("test.txt")
defer f.Close()
scanner := bufio.NewScanner(f)
scanner.Split(ScanLinesWithCR)
for scanner.Scan() {
fmt.Println(">", scanner.Text())
}
}