From a2119c09e95eeb871c2b30046f596d61257b108c Mon Sep 17 00:00:00 2001
From: Matthew Holt <mholt@users.noreply.github.com>
Date: Tue, 19 Oct 2021 12:25:36 -0600
Subject: map: Fix 95c03506 (avoid repeated expansions)

---
 modules/caddyhttp/map/map.go | 28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

(limited to 'modules/caddyhttp/map/map.go')

diff --git a/modules/caddyhttp/map/map.go b/modules/caddyhttp/map/map.go
index 670a55b..8394955 100644
--- a/modules/caddyhttp/map/map.go
+++ b/modules/caddyhttp/map/map.go
@@ -131,27 +131,21 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhtt
 		// find the first mapping matching the input and return
 		// the requested destination/output value
 		for _, m := range h.Mappings {
-			if m.re != nil {
-				if m.re.MatchString(input) {
-					if output := m.Outputs[destIdx]; output == nil {
-						continue
-					} else {
-						var result []byte
-						for _, submatches := range m.re.FindAllStringSubmatchIndex(input, -1) {
-							result = m.re.ExpandString(result, m.Outputs[destIdx].(string), input, submatches)
-						}
-						output = string(result)
-						return output, true
-					}
-				}
+			output := m.Outputs[destIdx]
+			if output == nil {
 				continue
 			}
-			if input == m.Input {
-				if output := m.Outputs[destIdx]; output == nil {
+			if m.re != nil {
+				var result []byte
+				matches := m.re.FindStringSubmatchIndex(input)
+				if matches == nil {
 					continue
-				} else {
-					return output, true
 				}
+				result = m.re.ExpandString(result, output.(string), input, matches)
+				return string(result), true
+			}
+			if input == m.Input {
+				return output, true
 			}
 		}
 
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