--env-file: simple line-delimited

match dock functionality, and not try to achieve shell-sourcing compatibility

Docker-DCO-1.1-Signed-off-by: Vincent Batts <vbatts@redhat.com> (github: vbatts)

opts/envfile.go

@@ -1,37 +0,0 @@
-package opts
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-)
-
-/*
-Read in a line delimited file with environment variables enumerated
-*/
-func ParseEnvFile(filename string) ([]string, error) {
-	fh, err := os.Open(filename)
-	if err != nil {
-		return []string{}, err
-	}
-	defer fh.Close()
-
-	lines := []string{}
-	scanner := bufio.NewScanner(fh)
-	for scanner.Scan() {
-		line := scanner.Text()
-		// line is not empty, and not starting with '#'
-		if len(line) > 0 && !strings.HasPrefix(line, "#") && strings.Contains(line, "=") {
-			data := strings.SplitN(line, "=", 2)
-			key := data[0]
-			val := data[1]
-			if str, err := strconv.Unquote(data[1]); err == nil {
-				val = str
-			}
-			lines = append(lines, fmt.Sprintf("%s=%s", key, val))
-		}
-	}
-	return lines, nil
-}