use mktemp(1) for temporary files

rivet.sh

@@ -54,7 +54,7 @@ convert() {
 	infile="$1"
 	extension="${infile##*.}"
 	if [ "$extension" = 'md' ]; then
-		tmpfile="tmpconvfile.tmp"
+		tmpfile="$(mktemp)"
 		outfile="${infile%md}html"
 		cp "$infile" "$tmpfile"
 		lowdown --html-no-skiphtml --html-no-escapehtml -s -Thtml \
@@ -108,8 +108,8 @@ unset src
 headerfile=$srcdir/_header.html
 footerfile=$srcdir/_footer.html
 metafile=$srcdir/_metadata.html
-objlist=objlist.tmp
-objdate=objdate.tmp
+objlist="$(mktemp)"
+objdate="$(mktemp)"
 
 # Check if index.md is present
 if ! [ -e "$srcdir"/index.md ]; then
@@ -181,7 +181,7 @@ done < "$objlist"
 sed -i -e 's/\.md$/\.html/' "$objlist"
 
 # Create a list that contains the links to all html files
-linklist=linklist.tmp
+linklist="$(mktemp)"
 cp -f "$objlist" "$linklist"
 sed -i -e "s/^$destdir//" -e "s/^/$prefix:\/\/$domain/" "$linklist"
 
@@ -195,7 +195,7 @@ fi
 
 # Prepare index file list
 if ! [ "$SKIP_LIST" ]; then
-	tmpfile="linkindex.tmp"
+	tmpfile="$(mktemp)"
 	rm -f "$tmpfile"
 	cat << EOF >> "$tmpfile"
 <div id="map">
@@ -230,7 +230,7 @@ done
 
 # Prepate the header
 if ! [ "$SKIP_HEADER" ]; then
-	tmphead="tmpheadfile.tmp"
+	tmphead="$(mktemp)"
 	cp "$headerfile" "$tmphead"
 	sed -i '1s/^/<header>/' "$tmphead"
 	echo '</header>' >> "$tmphead"
@@ -243,7 +243,7 @@ fi
 
 # Prepare the footer
 if ! [ "$SKIP_FOOTER" ]; then
-	tmpfoot="tmpfootfile.tmp"
+	tmpfoot="$(mktemp)"
 	cp "$footerfile" "$tmpfoot"
 	sed -i '1s/^/<footer>/' "$tmpfoot"
 	echo '</footer>' >> "$tmpfoot"