Added Lines (lines of a file represented as a string slice).

utio/lines.go

@@ -0,0 +1,48 @@
+package utio
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+)
+
+type Liner struct {
+	Lines []string
+}
+
+// Lines creates a coder that encodes/decodes the lines of a text file.
+func Lines() *Liner {
+	return &Liner{}
+}
+
+func (l *Liner) Encode(w io.Writer) error {
+	for _, line := range l.Lines {
+		if _, err := fmt.Fprintln(w, line); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (l *Liner) Decode(r io.Reader) error {
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		l.Lines = append(l.Lines, scanner.Text())
+	}
+	return scanner.Err()
+}
+
+// ReadLines reads a text file and splits in lines.
+func ReadLines(path string) ([]string, error) {
+	var l = Lines()
+	var err = DecodeFile(path, l)
+	if nil != err {
+		return nil, err
+	}
+	return l.Lines, nil
+}
+
+// WriteLines writes lines to a text file.
+func WriteLines(path string, lines []string) error {
+	return EncodeFile(path, &Liner{lines})
+}