From ac6c98bd35d32425608eaafe1cbf2efcd38a478a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Sun, 21 May 2023 11:56:56 +0200
Subject: [PATCH] speed improvement: save fork when checking mdfile existence

---
 handlers/20_page.sh     | 2 +-
 handlers/90_brackets.sh | 2 +-
 themes/default.sh       | 2 +-
 tools.sh                | 8 +++++++-
 4 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/handlers/20_page.sh b/handlers/20_page.sh
index 87af685..eb894c2 100755
--- a/handlers/20_page.sh
+++ b/handlers/20_page.sh
@@ -56,7 +56,7 @@ case "${PATH_INFO}" in
     return 1
     ;;
   */)
-    if [ ! "$(mdfile "$PATH_INFO")" ]; then
+    if ! mdfile "$PATH_INFO" >&-; then
       theme_error 404
     elif ! acl_read "$PATH_INFO"; then
       theme_error 403
diff --git a/handlers/90_brackets.sh b/handlers/90_brackets.sh
index 1f11cf4..ce49b0e 100755
--- a/handlers/90_brackets.sh
+++ b/handlers/90_brackets.sh
@@ -11,7 +11,7 @@ case "${PATH_INFO}" in
     REDIRECT "${_BASE}${PATH_INFO%\[view\]}"
     ;;
   */)
-    if [ ! "$(mdfile "${PATH_INFO}")" ]; then
+    if ! mdfile "${PATH_INFO}" >&-; then
       theme_error 404
     elif ! acl_read "${PATH_INFO}"; then
       theme_error 403
diff --git a/themes/default.sh b/themes/default.sh
index 7c31003..3812f06 100755
--- a/themes/default.sh
+++ b/themes/default.sh
@@ -171,7 +171,7 @@ theme_error(){
     500) printf "%s\r\n" "Status: 500 Internal Server Error";;
   esac
 
-  if [ "$(mdfile "/[wiki]/$errno/")" ]; then
+  if mdfile "/[wiki]/$errno/" >&-; then
     theme_page "/[wiki]/$errno/"
   else
     printf "Content-Length: 0\r\n\r\n"
diff --git a/tools.sh b/tools.sh
index c5545fb..de055fe 100755
--- a/tools.sh
+++ b/tools.sh
@@ -12,15 +12,21 @@ else
 fi
 
 mdfile(){
+  #  Check if page exists, if possible fall
+  #  back to default page from installation
   local page="$(PATH "$1")"
 
   if   [ -f "$_DATA/pages/$page/#page.md" ]; then
     printf %s\\n "$_DATA/pages/$page/#page.md"
+    return 0
   elif [ -f "$_EXEC/pages/$page/#page.md" ]; then
     printf %s\\n "$_EXEC/pages/$page/#page.md"
+    return 0
   else
     return 1
-  fi
+  fi 2>&-
+  #  ^^ suppress error messages produced
+  #     by printf when stdout was closed
 }
 
 size_human(){
-- 
2.39.2