# HG changeset patch
# User Pascal Bellard <pascal.bellard@slitaz.org>
# Date 1343329927 -7200
# Node ID 87afe4f1486df3fc6fd046d2fc32c1c2f303c201
# Parent  d35926c24766226c5a7fc0af633478df5c17770a
mirror-search.sh: be less cpu hungry...

diff -r d35926c24766 -r 87afe4f1486d pkgs/mirror-search.sh
--- a/pkgs/mirror-search.sh	Mon Jul 16 18:48:52 2012 +0000
+++ b/pkgs/mirror-search.sh	Thu Jul 26 21:12:07 2012 +0200
@@ -1,9 +1,13 @@
 #!/bin/sh
+
 # Tiny CGI search engine for SliTaz packages on http://pkgs.slitaz.org/
 # Christophe Lincoln <pankso@slitaz.org>
+# Pascal Bellard <pascal.bellard@slitaz.org>
 # Aleksej Bobylev <al.bobylev@gmail.com>
 #
 
+renice -n 19 $$
+
 # Parse query string
 . /usr/lib/slitaz/httphelper.sh
 
@@ -216,11 +220,27 @@
 	. lib/header.sh
 }
 
+cat_files_list()
+{
+	local tmp=/tmp/files.list.$(basename ${1%/packages})
+	if [ ! -s $tmp -o $1/files.list.lzma -nt $tmp ]; then
+		unlzma -c $1/files.list.lzma > $tmp.$$ && mv $tmp.$$ $tmp
+	fi
+	case "$2" in
+	lines)	if [ ! -s $tmp.lines -o $tmp -nt $tmp.lines ]; then
+			cat $tmp | wc -l > $tmp.lines.$$ &&
+			mv $tmp.lines.$$ $tmp.lines
+		fi
+		cat $tmp.lines ;;	
+	*)	cat $tmp ;;
+	esac
+}
+
 # xHTML Footer.
 # TODO: caching the summary for 5 minutes
 xhtml_footer() {
 	PKGS=$(ls $WOK/ | wc -l)
-	FILES=$(unlzma -c $PACKAGES_REPOSITORY/files.list.lzma | wc -l)
+	FILES=$(cat_files_list $PACKAGES_REPOSITORY lines)
 	. lib/footer.sh
 }
 
@@ -584,8 +604,8 @@
 <h3>$(eval_gettext "These packages may overload files of \$SEARCH")</h3>
 <pre>
 _EOT_
-		( unlzma -c $PACKAGES_REPOSITORY/files.list.lzma | grep ^$SEARCH: ;
-		  unlzma -c $PACKAGES_REPOSITORY/files.list.lzma | grep -v ^$SEARCH: ) | awk '
+		( cat_files_list $PACKAGES_REPOSITORY | grep ^$SEARCH: ;
+		  cat_files_list $PACKAGES_REPOSITORY | grep -v ^$SEARCH: ) | awk '
 BEGIN { pkg=""; last="x" }
 {
 	if ($2 == "") next
@@ -613,7 +633,7 @@
 <pre>
 _EOT_
 		last=""
-		unlzma -c $PACKAGES_REPOSITORY/files.list.lzma \
+		cat_files_list $PACKAGES_REPOSITORY \
 		| grep "$SEARCH" | while read pkg file; do
 			echo "$file" | grep -q "$SEARCH" || continue
 			if [ "$last" != "${pkg%:}" ]; then
@@ -644,13 +664,13 @@
 <pre>
 _EOT_
 		last=""
-		unlzma -c $PACKAGES_REPOSITORY/files.list.lzma \
+		cat_files_list $PACKAGES_REPOSITORY \
 		| grep ^$SEARCH: |  sed 's/.*: /    /' | sort
 		cat << _EOT_
 </pre>
 <pre>
 _EOT_
-		filenb=$(unlzma -c $PACKAGES_REPOSITORY/files.list.lzma | grep ^$SEARCH: | wc -l)
+		filenb=$(cat_files_list $PACKAGES_REPOSITORY | grep ^$SEARCH: | wc -l)
 		eval_ngettext "\$filenb file" "\$filenb files" $filenb
 		cat << _EOT_
   \