From 555fafa2e76b5c1a146e13529d398ee6c3e50287 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Sun, 21 May 2023 00:15:50 +0200
Subject: [PATCH] URL rewriting for translation pages

---
 handlers/10_translations.sh | 59 +++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100755 handlers/10_translations.sh

diff --git a/handlers/10_translations.sh b/handlers/10_translations.sh
new file mode 100755
index 0000000..e666408
--- /dev/null
+++ b/handlers/10_translations.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+export LANGUAGE_DEFAULT="${LANGUAGE_DEFAULT:-en}"
+export HTTP_REFERER="${HTTP_REFERER:-$(HEADER Referer)}"
+
+case ${HTTP_REFERER} in
+  */:*/*):;;
+  */:*)
+   LANGUAGE_REFERRED="${HTTP_REFERER##*/:}"
+   ;;
+esac
+
+export LANGUAGE="${LANGUAGE_REFERRED:-${LANGUAGE_DEFAULT}}"
+
+case ${PATH_INFO} in
+  */:?*/\[attachment\]/?*)
+    export LANGUAGE="${PATH_INFO#*/:}"
+           LANGUAGE="${LANGUAGE%%/*}"
+    PATH_INFO="${PATH_INFO%%:?*/*}${PATH_INFO#*/:?*/}"
+    ;;
+  */:?*/\[attachment\])
+    export LANGUAGE="${PATH_INFO#*/:}"
+           LANGUAGE="${LANGUAGE%%/*}"
+    PATH_INFO="${PATH_INFO%:?*/\[attachment\]}[attachment]"
+    ;;
+  */:*/?*)  # Never occurs
+    :;;
+  */:?*/)   # Faulty URL build
+    REDIRECT "${_BASE}${PATH_INFO%/}"
+    ;;
+# */:"${LANGUAGE_DEFAULT}")
+#   REDIRECT "${_BASE}${PATH_INFO%:*}"
+#   ;;
+  */:?*)
+    export LANGUAGE="${PATH_INFO##*/:}"
+    if mdfile "${PATH_INFO}/"; then
+      PATH_INFO="${PATH_INFO}/"
+    elif [ "$LANGUAGE" = "$LANGUAGE_DEFAULT" ]; then
+      PATH_INFO="${PATH_INFO%:*}"
+    else
+      export ERROR_MSG="TRANSLATION NOT FOUND"
+      PATH_INFO="${PATH_INFO%:*}"
+    fi
+    ;;
+  /|*/*/)
+    if [ "$LANGUAGE_REFERRED" -a "$LANGUAGE_REFERRED" != "$LANGUAGE_DEFAULT" ]; then
+      REDIRECT "${_BASE}${PATH_INFO}:${LANGUAGE_REFERRED}"
+    fi
+    ;;
+  */:*/\[*\])  # Considered valid in most cases
+    :;;
+  */\[*\])
+    if [ "$LANGUAGE_REFERRED" -a "$LANGUAGE_REFERRED" != "$LANGUAGE_DEFAULT" ]; then
+      REDIRECT "${_BASE}${PATH_INFO%\[*\]}:${LANGUAGE_REFERRED}/[${PATH_INFO##*/\[}"
+    fi
+    ;;
+esac
+
+return 1
-- 
2.39.2