Extract string conversion functions

1 files changed, 35 insertions, 0 deletions

diff --git a/strconv.go b/strconv.go
new file mode 100644
index 0000000..2fb9d73
--- /dev/null
+++ b/strconv.go
@@ -0,0 +1,35 @@
+package koushin
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func parseUid(s string) (uint32, error) {
+	uid, err := strconv.ParseUint(s, 10, 32)
+	if err != nil {
+		return 0, err
+	}
+	if uid == 0 {
+		return 0, fmt.Errorf("UID must be non-zero")
+	}
+	return uint32(uid), nil
+}
+
+func parsePartPath(s string) ([]int, error) {
+	l := strings.Split(s, ".")
+	path := make([]int, len(l))
+	for i, s := range l {
+		var err error
+		path[i], err = strconv.Atoi(s)
+		if err != nil {
+			return nil, err
+		}
+
+		if path[i] <= 0 {
+			return nil, fmt.Errorf("part num must be strictly positive")
+		}
+	}
+	return path, nil
+}