Start working towards convenient "scrolling"feature-offset-move

Known issue: missing wait or something prevents from convenient
             one-off ^C exit

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>

1 files changed, 57 insertions, 36 deletions

diff --git a/watch-bz b/watch-bz
index 0ba33f9..207edaf 100755
--- a/watch-bz
+++ b/watch-bz
@@ -125,6 +125,8 @@ fi
 
 
 do_logout () {
+	stty echo
+	kill $! 2>/dev/null
 	test -n "${BZUSER}" \
 	  && rm "${BUGZILLA_COOKIE}" \
 	  && echo "watch-bz: Authorization cookie removed"
@@ -184,6 +186,7 @@ do_init () {
 
 # exclusively using globals
 do_watch () {
+	local readstatus char move=0 newmove=0
 	EXEC="${WATCHCMD} -t --interval $REFRESH_INTERVAL"
 	[ "${WATCHBZ_DEBUG}" -ne 0 ] && EXEC="sh -c"
 	TAIL="${HERE}/table-data $SEP | sort -n | ${PRECOLORIZE} | cut -c-$WIDTH | ${COLORIZE}"
@@ -193,42 +196,60 @@ do_watch () {
 	[ "${WATCHBZ_DEBUG}" -ne 0 ] && echo \
 	  "${BUGZILLA} --cookiefile=${BUGZILLA_COOKIE} query -c ${COMPONENT} \
 	             -t \"${STATUS}\" --outputformat ${OUTPUT_FMT} ${QUERY_REST}"
-	${EXEC} \
-	  "${BUGZILLA} --cookiefile=${BUGZILLA_COOKIE} query -c ${COMPONENT} \
-	             -t \"${STATUS}\" --outputformat ${OUTPUT_FMT} ${QUERY_REST} \
-	  | sed -u \
-	    -e \"s|${SEP}Red Hat Enterprise Linux |${SEP}EL|\" \
-	    -e \"s|${SEP}Fedora|${SEP} F |\" \
-	    -e \"s|${SEP}NEW|${SEP}N|\" \
-	    -e \"s|${SEP}ASSIGNED|${SEP}A|\" \
-	    -e \"s|${SEP}POST|${SEP}P|\" \
-	    -e \"s|${SEP}MODIFIED|${SEP}M|\" \
-	    -e \"s|${SEP}ON_QA|${SEP}Q|\" \
-	    -e \"s|${SEP}ON_DEV|${SEP}D|\" \
-	    -e \"s|${SEP}VERIFIED|${SEP}V|\" \
-	    -e \"s|${SEP}RELEASE_PENDING|${SEP}R|\" \
-	    -e \"s|${SEP}CLOSED|${SEP}C|\" \
-	    -e \"s|${SEP}urgent|${SEP}!!!|\" \
-	    -e \"s|${SEP}high|${SEP}!!|\" \
-	    -e \"s|${SEP}medium|${SEP} ! |\" \
-	    -e \"s|${SEP}low|${SEP} ~ |\" \
-	    -e \"s|${SEP}unspecified|${SEP} ? |\" \
-	    -e \"s|qa_ack|QA|\" \
-	    -e \"s|pm_ack|PM|\" \
-	    -e \"s|devel_ack|DE|\" \
-	    -e \"s|needinfo|I|\" \
-	    -e \"s|exception|E|\" \
-	    -e \"s|blocker|BL|\" \
-	    -e \"s|requires_release_note|RN|\" \
-	    -e \"s|requires_doc_text|RD|\" \
-	    -e \"s|docs_scoped|D|g\" \
-	    -e \":dsloop\" \
-	    -e \"s|\([^A-Z]D-\+\),D-|\1-|g;tdsloop\" \
-	    -e \"s|\([^A-Z]D+\+\),D+|\1+|g;tdsloop\" \
-	    -e \"s|\([^A-Z]D?\+\),D?|\1?|g;tdsloop\" \
-	    -e \"s|rhel-||g\" \
-	    -e \"s|qe_test_coverage[?+-][,]\?||\" \
-	    -e \"s|None||\" | ${TAIL}"
+	while true; do
+		let move+=${newmove}
+		test "${move}" -ge 0 || move=0
+		newmove=0
+		${EXEC} \
+		  "${BUGZILLA} --cookiefile=${BUGZILLA_COOKIE} query -c ${COMPONENT} \
+		             -t \"${STATUS}\" --outputformat ${OUTPUT_FMT} ${QUERY_REST} \
+		  | sed -u \
+		    -e \"s|${SEP}Red Hat Enterprise Linux |${SEP}EL|\" \
+		    -e \"s|${SEP}Fedora|${SEP} F |\" \
+		    -e \"s|${SEP}NEW|${SEP}N|\" \
+		    -e \"s|${SEP}ASSIGNED|${SEP}A|\" \
+		    -e \"s|${SEP}POST|${SEP}P|\" \
+		    -e \"s|${SEP}MODIFIED|${SEP}M|\" \
+		    -e \"s|${SEP}ON_QA|${SEP}Q|\" \
+		    -e \"s|${SEP}ON_DEV|${SEP}D|\" \
+		    -e \"s|${SEP}VERIFIED|${SEP}V|\" \
+		    -e \"s|${SEP}RELEASE_PENDING|${SEP}R|\" \
+		    -e \"s|${SEP}CLOSED|${SEP}C|\" \
+		    -e \"s|${SEP}urgent|${SEP}!!!|\" \
+		    -e \"s|${SEP}high|${SEP}!!|\" \
+		    -e \"s|${SEP}medium|${SEP} ! |\" \
+		    -e \"s|${SEP}low|${SEP} ~ |\" \
+		    -e \"s|${SEP}unspecified|${SEP} ? |\" \
+		    -e \"s|qa_ack|QA|\" \
+		    -e \"s|pm_ack|PM|\" \
+		    -e \"s|devel_ack|DE|\" \
+		    -e \"s|needinfo|I|\" \
+		    -e \"s|exception|E|\" \
+		    -e \"s|blocker|BL|\" \
+		    -e \"s|requires_release_note|RN|\" \
+		    -e \"s|requires_doc_text|RD|\" \
+		    -e \"s|docs_scoped|D|g\" \
+		    -e \":dsloop\" \
+		    -e \"s|\([^A-Z]D-\+\),D-|\1-|g;tdsloop\" \
+		    -e \"s|\([^A-Z]D+\+\),D+|\1+|g;tdsloop\" \
+		    -e \"s|\([^A-Z]D?\+\),D?|\1?|g;tdsloop\" \
+		    -e \"s|rhel-||g\" \
+		    -e \"s|qe_test_coverage[?+-][,]\?||\" \
+		    -e \"s|None||\" | ${TAIL} | tail -n+${move}" \
+		& while true; do
+			read -n3 -t3 -s char
+			readstatus=$?
+			if test "${readstatus}" -gt 128; then
+				test "${newmove}" -ne 0 && kill $! && break
+			else
+				case "${char}" in
+				$(printf "\e[A")) let newmove-=1;;
+				$(printf "\e[B")) let newmove+=1;;
+				esac
+			fi
+		done
+		echo "Moving by offset ${newmove}..."
+	done
 }
 
 do_init