From 36a7062732ede1219d99b3270a95fcd75df6eeea Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Tue, 17 Jul 2018 01:54:28 +0200
Subject: [PATCH] application of tag filters

---
 advsearch.sh | 20 ++++++++++++++++++++
 index.cgi    |  3 +++
 2 files changed, 23 insertions(+)
 create mode 100644 advsearch.sh

diff --git a/advsearch.sh b/advsearch.sh
new file mode 100644
index 0000000..6f85ed2
--- /dev/null
+++ b/advsearch.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+f=''
+ref="$(POST ref)"
+order="$(POST order |grep -m1 -xE 'Name|Date|Length' || printf Name)"
+
+for n in 1 2 3 4 5 6 7 8 9; do
+  [ "$(POST pol_$n)" = neg ] \
+  && f="$f~"
+  cat="$(POST cat_$n)"
+  for m in $(seq 1 $(POST_COUNT tag_$n)); do
+    tag="$(POST tag_$n $m)"
+    [ ! "${tag##${cat}:*}" ] || [ "$cat" = '*' -a "${tag##*:*}" ] \
+    && f="${f}${tag}|"
+  done
+  f="${f%[|^]}^"
+done
+f="${f%^}"
+
+REDIRECT "${ref%%\?*}?o=${order}&f=${f}"
diff --git a/index.cgi b/index.cgi
index a8ddaa8..7a1a3ef 100755
--- a/index.cgi
+++ b/index.cgi
@@ -48,6 +48,9 @@ elif [ -f "$_DATA/$ITEM" ]; then
   esac
 elif [ -d "$_DATA/$ITEM" ]; then
   case $(GET a) in
+    advsearch)
+      . "$_EXEC/advsearch.sh"
+    ;;
     spawnindex)
       if [ "$(POST recursive)" = yes ]; then
         find "$_DATA/$ITEM" -depth -type d \! -name .index \
-- 
2.39.2