1 files changed, 69 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/svchost/label_iter.go b/vendor/github.com/hashicorp/terraform/svchost/label_iter.go
new file mode 100644
index 0000000..af8ccba
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/svchost/label_iter.go
@@ -0,0 +1,69 @@
+package svchost
+
+import (
+        "strings"
+)
+
+// A labelIter allows iterating over domain name labels.
+//
+// This type is copied from golang.org/x/net/idna, where it is used
+// to segment hostnames into their separate labels for analysis. We use
+// it for the same purpose here, in ForComparison.
+type labelIter struct {
+        orig     string
+        slice    []string
+        curStart int
+        curEnd   int
+        i        int
+}
+
+func (l *labelIter) reset() {
+        l.curStart = 0
+        l.curEnd = 0
+        l.i = 0
+}
+
+func (l *labelIter) done() bool {
+        return l.curStart >= len(l.orig)
+}
+
+func (l *labelIter) result() string {
+        if l.slice != nil {
+                return strings.Join(l.slice, ".")
+        }
+        return l.orig
+}
+
+func (l *labelIter) label() string {
+        if l.slice != nil {
+                return l.slice[l.i]
+        }
+        p := strings.IndexByte(l.orig[l.curStart:], '.')
+        l.curEnd = l.curStart + p
+        if p == -1 {
+                l.curEnd = len(l.orig)
+        }
+        return l.orig[l.curStart:l.curEnd]
+}
+
+// next sets the value to the next label. It skips the last label if it is empty.
+func (l *labelIter) next() {
+        l.i++
+        if l.slice != nil {
+                if l.i >= len(l.slice) || l.i == len(l.slice)-1 && l.slice[l.i] == "" {
+                        l.curStart = len(l.orig)
+                }
+        } else {
+                l.curStart = l.curEnd + 1
+                if l.curStart == len(l.orig)-1 && l.orig[l.curStart] == '.' {
+                        l.curStart = len(l.orig)
+                }
+        }
+}
+
+func (l *labelIter) set(s string) {
+        if l.slice == nil {
+                l.slice = strings.Split(l.orig, ".")
+        }
+        l.slice[l.i] = s
+}