Allow setting every array element in replacements

Author: koba1t

kyaml/yaml/fns.go

@@ -796,6 +796,12 @@ func SplitIndexNameValue(p string) (string, string, error) {
 	return parts[0], parts[1], nil
 }
 
+// IsMatchEveryIndex returns true if p is matching every elements.
+// e.g. "*"
+func IsMatchEveryIndex(p string) bool {
+	return p == "*"
+}
+
 // IncrementFieldIndex increments i to point to the next field name element in
 // a slice of Contents.
 func IncrementFieldIndex(i int) int {

kyaml/yaml/match.go

@@ -83,10 +83,42 @@ func (p *PathMatcher) filter(rn *RNode) (*RNode, error) {
 		// match seq elements
 		return p.doSeq(rn)
 	}
+
+	if IsMatchEveryIndex(p.Path[0]) {
+		// match every elements (*)
+		return p.doMatchEvery(rn)
+	}
 	// match a field
 	return p.doField(rn)
 }
 
+func (p *PathMatcher) doMatchEvery(rn *RNode) (*RNode, error) {
+
+	if err := rn.VisitElements(p.visitEveryElem); err != nil {
+		return nil, err
+	}
+
+	// fmt.Println(p.val.String())
+	return p.val, nil
+}
+
+func (p *PathMatcher) visitEveryElem(elem *RNode) error {
+
+	fieldName := p.Path[0]
+	// recurse on the matching element
+	pm := &PathMatcher{Path: p.Path[1:]}
+	add, err := pm.filter(elem)
+	for k, v := range pm.Matches {
+		p.Matches[k] = v
+	}
+	if err != nil || add == nil {
+		return err
+	}
+	p.append(fieldName, add.Content()...)
+
+	return nil
+}
+
 func (p *PathMatcher) doField(rn *RNode) (*RNode, error) {
 	// lookup the field
 	field, err := rn.Pipe(Get(p.Path[0]))

kyaml/yaml/match_test.go

@@ -77,6 +77,12 @@ spec:
 		{[]string{
 			"spec", "template", "spec", "containers", "[name=s.*]", "ports", "[containerPort=.*2]"},
 			""},
+		{[]string{
+			"spec", "template", "spec", "containers", "*", "image"},
+			"- nginx:1.7.9\n- sidecar:1.0.0\n"},
+		{[]string{
+			"spec", "template", "spec", "containers", "*", "ports", "*"},
+			"- containerPort: 80\n- containerPort: 8081\n- containerPort: 9090\n"},
 	}
 	for i, u := range updates {
 		result, err := node.Pipe(&PathMatcher{Path: u.path})