1 files changed, 74 insertions, 0 deletions
diff --git a/vendor/github.com/mitchellh/packer/vendor/github.com/ChrisTrenkamp/goxpath/internal/parser/intfns/boolfns.go b/vendor/github.com/mitchellh/packer/vendor/github.com/ChrisTrenkamp/goxpath/internal/parser/intfns/boolfns.go
new file mode 100644
index 00000000..5480ebcc
--- /dev/null
+++ b/vendor/github.com/mitchellh/packer/vendor/github.com/ChrisTrenkamp/goxpath/internal/parser/intfns/boolfns.go
@@ -0,0 +1,74 @@
+package intfns
+
+import (
+	"fmt"
+
+	"github.com/ChrisTrenkamp/goxpath/tree"
+	"golang.org/x/text/language"
+)
+
+func boolean(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
+	if b, ok := args[0].(tree.IsBool); ok {
+		return b.Bool(), nil
+	}
+
+	return nil, fmt.Errorf("Cannot convert object to a boolean")
+}
+
+func not(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
+	b, ok := args[0].(tree.IsBool)
+	if !ok {
+		return nil, fmt.Errorf("Cannot convert object to a boolean")
+	}
+	return !b.Bool(), nil
+}
+
+func _true(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
+	return tree.Bool(true), nil
+}
+
+func _false(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
+	return tree.Bool(false), nil
+}
+
+func lang(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
+	lStr := args[0].String()
+
+	var n tree.Elem
+
+	for _, i := range c.NodeSet {
+		if i.GetNodeType() == tree.NtElem {
+			n = i.(tree.Elem)
+		} else {
+			n = i.GetParent()
+		}
+
+		for n.GetNodeType() != tree.NtRoot {
+			if attr, ok := tree.GetAttribute(n, "lang", tree.XMLSpace); ok {
+				return checkLang(lStr, attr.Value), nil
+			}
+			n = n.GetParent()
+		}
+	}
+
+	return tree.Bool(false), nil
+}
+
+func checkLang(srcStr, targStr string) tree.Bool {
+	srcLang := language.Make(srcStr)
+	srcRegion, srcRegionConf := srcLang.Region()
+
+	targLang := language.Make(targStr)
+	targRegion, targRegionConf := targLang.Region()
+
+	if srcRegionConf == language.Exact && targRegionConf != language.Exact {
+		return tree.Bool(false)
+	}
+
+	if srcRegion != targRegion && srcRegionConf == language.Exact && targRegionConf == language.Exact {
+		return tree.Bool(false)
+	}
+
+	_, _, conf := language.NewMatcher([]language.Tag{srcLang}).Match(targLang)
+	return tree.Bool(conf >= language.High)
+}