improved meta generation code

[serve0] / indexmeta.sh

diff --git a/indexmeta.sh b/indexmeta.sh
new file mode 100644 (file)
index 0000000..84dd26a
--- /dev/null
+++ b/indexmeta.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+[ -n "$include_indexmeta" ] && return 0
+include_indexmeta="$0"
+
+. "$_EXEC/cgilite/storage.sh"
+file_pattern='^.*\.(mov|ts|mpg|mpeg|mp4|m4v|avi|mkv|flv|sfv|wmv|ogm|ogv|webm|iso|rmvb)$'
+
+meta_name() {
+  fn="$1"
+  fn="${fn##*/}"
+  fn="${fn%.*}"
+  STRING "$fn"
+}
+
+meta_line() {
+  video="$1"
+
+  read l h w <<__EOF
+  $(printf '' \
+    | mplayer -input nodefault-bindings -nosound -vo null -identify -frames 0 "$video" 2>&- \
+    | sort | sed -rn '
+      s:ID_LENGTH=(.*)(\..*)$:\1:p;
+      s:ID_VIDEO_HEIGHT=(.*):\1:p;
+      s:ID_VIDEO_WIDTH=(.*):\1:p;' \
+    | tr '\n' ' '
+  )
+__EOF
+  printf '%i\t%i\t%i\ttags=\tcomment=\t%s\n' \
+         "${l-0}" "${w-0}" "${h-0}" "$(meta_name "$video")"
+}
+
+meta_dir(){
+  dir="${1}"
+  meta="${dir}/.index/meta"
+
+  if [ -d "$dir/.index" -a \! -f "$meta" ] && LOCK "$meta"; then
+    touch "$meta"  # preliminary touch to prevent concurrent generators
+    find "$dir" -type f -mindepth 1 -maxdepth 1 \
+    | grep -E "$file_pattern" \
+    | while v="$(line)"; do
+      meta_line "$v"
+    done >"$meta"
+
+    RELEASE "$meta"
+  elif [ -d "$dir/.index" -a "$dir" -nt "$meta" ] && LOCK "$meta"; then
+    touch "$meta"
+    find "$dir" -type f -mindepth 1 -maxdepth 1 \
+    | grep -E "$file_pattern" \
+    | while v="$(line)"; do
+      if [ "$v" -nt "$meta" ]; then
+        grep -qF "     $(meta_name "$v")" "$meta" \
+        || meta_line "$v"
+      fi
+    done >>"$meta"
+
+    RELEASE "$meta"
+  fi
+}