switch to liquid templating to remain consistent w/ api

go.mod

@@ -75,6 +75,7 @@ require (
 	golang.org/x/mod v0.10.0
 	golang.org/x/oauth2 v0.8.0
 	gopkg.in/yaml.v2 v2.4.0
+	gopkg.in/yaml.v3 v3.0.1
 	helm.sh/helm/v3 v3.11.2
 	k8s.io/api v0.26.4
 	k8s.io/apimachinery v0.26.4
@@ -284,7 +285,6 @@ require (
 	gopkg.in/cheggaaa/pb.v1 v1.0.28 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/cluster-bootstrap v0.25.3 // indirect
 	k8s.io/kops v1.25.2 // indirect
 	k8s.io/kube-aggregator v0.25.2 // indirect

pkg/pr/updates.go

@@ -7,7 +7,7 @@ import (
 )
 
 func applyUpdates(updates *UpdateSpec, ctx map[string]interface{}) error {
-	replacement, err := templateReplacement(updates.ReplaceTemplate, ctx)
+	replacement, err := templateReplacement([]byte(updates.ReplaceTemplate), ctx)
 	if err != nil {
 		return err
 	}
@@ -34,7 +34,7 @@ func applyUpdates(updates *UpdateSpec, ctx map[string]interface{}) error {
 	})
 }
 
-func updateFile(path string, updates *UpdateSpec, replacement string) error {
+func updateFile(path string, updates *UpdateSpec, replacement []byte) error {
 	switch updates.MatchStrategy {
 	case "any":
 		return anyUpdateFile(path, updates, replacement)
@@ -47,14 +47,14 @@ func updateFile(path string, updates *UpdateSpec, replacement string) error {
 	}
 }
 
-func anyUpdateFile(path string, updates *UpdateSpec, replacement string) error {
+func anyUpdateFile(path string, updates *UpdateSpec, replacement []byte) error {
 	return replaceInPlace(path, func(data []byte) ([]byte, error) {
 		for _, reg := range updates.Regexes {
 			r, err := regexp.Compile(reg)
 			if err != nil {
 				return data, err
 			}
-			data = r.ReplaceAll(data, []byte(replacement))
+			data = r.ReplaceAll(data, replacement)
 		}
 		return data, nil
 	})
@@ -64,13 +64,13 @@ func allUpdateFile(path string, updates *UpdateSpec) error {
 	return nil
 }
 
-func recursiveUpdateFile(path string, updates *UpdateSpec, replacement string) error {
+func recursiveUpdateFile(path string, updates *UpdateSpec, replacement []byte) error {
 	return replaceInPlace(path, func(data []byte) ([]byte, error) {
 		return recursiveReplace(data, updates.Regexes, replacement)
 	})
 }
 
-func recursiveReplace(data []byte, regexes []string, replacement string) ([]byte, error) {
+func recursiveReplace(data []byte, regexes []string, replacement []byte) ([]byte, error) {
 	if len(regexes) == 0 {
 		return []byte(replacement), nil
 	}

pkg/pr/utils.go

@@ -1,23 +1,20 @@
 package pr
 
 import (
-	"bytes"
 	"os"
-	"text/template"
 
-	"github.com/Masterminds/sprig/v3"
+	"github.com/osteele/liquid"
 )
 
-func templateReplacement(data string, ctx map[string]interface{}) (string, error) {
-	tpl, err := template.New("gotpl").Funcs(sprig.TxtFuncMap()).Parse(data)
-	if err != nil {
-		return "", err
-	}
-	var buf bytes.Buffer
-	if err := tpl.Execute(&buf, map[string]interface{}{"context": ctx}); err != nil {
-		return "", err
+var (
+	liquidEngine = liquid.NewEngine()
+)
+
+func templateReplacement(data []byte, ctx map[string]interface{}) ([]byte, error) {
+	bindings := map[string]interface{}{
+		"context": ctx,
 	}
-	return buf.String(), nil
+	return liquidEngine.ParseAndRender(data, bindings)
 }
 
 func replaceInPlace(path string, rep func(data []byte) ([]byte, error)) error {