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|
package cmd
import (
"bytes"
"errors"
"fmt"
"io"
"os"
)
func streamToBytes(stream io.Reader) ([]byte, error) {
buf := new(bytes.Buffer)
_, err := buf.ReadFrom(stream)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func isInputFromPipe() bool {
fi, _ := os.Stdin.Stat()
return (fi.Mode() & os.ModeCharDevice) == 0
}
func getFile() (*os.File, error) {
if flags.filepath == "" {
return nil, errors.New("please provide an input file")
}
if !fileExists(flags.filepath) {
return nil, errors.New("the file provided does not exist")
}
file, e := os.Open(flags.filepath)
if e != nil {
return nil, fmt.Errorf("Unable to open file: %w", e)
}
return file, nil
}
func fileExists(filepath string) bool {
info, e := os.Stat(filepath)
if os.IsNotExist(e) {
return false
}
return !info.IsDir()
}
|
