Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/github.com/jessevdk/go-flags/multitag.go b/vendor/github.com/jessevdk/go-flags/multitag.go
new file mode 100644
index 0000000..96bb1a3
--- /dev/null
+++ b/vendor/github.com/jessevdk/go-flags/multitag.go
@@ -0,0 +1,140 @@
+package flags
+
+import (
+ "strconv"
+)
+
+type multiTag struct {
+ value string
+ cache map[string][]string
+}
+
+func newMultiTag(v string) multiTag {
+ return multiTag{
+ value: v,
+ }
+}
+
+func (x *multiTag) scan() (map[string][]string, error) {
+ v := x.value
+
+ ret := make(map[string][]string)
+
+ // This is mostly copied from reflect.StructTag.Get
+ for v != "" {
+ i := 0
+
+ // Skip whitespace
+ for i < len(v) && v[i] == ' ' {
+ i++
+ }
+
+ v = v[i:]
+
+ if v == "" {
+ break
+ }
+
+ // Scan to colon to find key
+ i = 0
+
+ for i < len(v) && v[i] != ' ' && v[i] != ':' && v[i] != '"' {
+ i++
+ }
+
+ if i >= len(v) {
+ return nil, newErrorf(ErrTag, "expected `:' after key name, but got end of tag (in `%v`)", x.value)
+ }
+
+ if v[i] != ':' {
+ return nil, newErrorf(ErrTag, "expected `:' after key name, but got `%v' (in `%v`)", v[i], x.value)
+ }
+
+ if i+1 >= len(v) {
+ return nil, newErrorf(ErrTag, "expected `\"' to start tag value at end of tag (in `%v`)", x.value)
+ }
+
+ if v[i+1] != '"' {
+ return nil, newErrorf(ErrTag, "expected `\"' to start tag value, but got `%v' (in `%v`)", v[i+1], x.value)
+ }
+
+ name := v[:i]
+ v = v[i+1:]
+
+ // Scan quoted string to find value
+ i = 1
+
+ for i < len(v) && v[i] != '"' {
+ if v[i] == '\n' {
+ return nil, newErrorf(ErrTag, "unexpected newline in tag value `%v' (in `%v`)", name, x.value)
+ }
+
+ if v[i] == '\\' {
+ i++
+ }
+ i++
+ }
+
+ if i >= len(v) {
+ return nil, newErrorf(ErrTag, "expected end of tag value `\"' at end of tag (in `%v`)", x.value)
+ }
+
+ val, err := strconv.Unquote(v[:i+1])
+
+ if err != nil {
+ return nil, newErrorf(ErrTag, "Malformed value of tag `%v:%v` => %v (in `%v`)", name, v[:i+1], err, x.value)
+ }
+
+ v = v[i+1:]
+
+ ret[name] = append(ret[name], val)
+ }
+
+ return ret, nil
+}
+
+func (x *multiTag) Parse() error {
+ vals, err := x.scan()
+ x.cache = vals
+
+ return err
+}
+
+func (x *multiTag) cached() map[string][]string {
+ if x.cache == nil {
+ cache, _ := x.scan()
+
+ if cache == nil {
+ cache = make(map[string][]string)
+ }
+
+ x.cache = cache
+ }
+
+ return x.cache
+}
+
+func (x *multiTag) Get(key string) string {
+ c := x.cached()
+
+ if v, ok := c[key]; ok {
+ return v[len(v)-1]
+ }
+
+ return ""
+}
+
+func (x *multiTag) GetMany(key string) []string {
+ c := x.cached()
+ return c[key]
+}
+
+func (x *multiTag) Set(key string, value string) {
+ c := x.cached()
+ c[key] = []string{value}
+}
+
+func (x *multiTag) SetMany(key string, value []string) {
+ c := x.cached()
+ c[key] = value
+}