ui/ncurses: Add status log UI

[petitboot] / ui / ncurses / nc-statuslog.c

diff --git a/ui/ncurses/nc-statuslog.c b/ui/ncurses/nc-statuslog.c
new file mode 100644 (file)
index 0000000..1943f39
--- /dev/null
+++ b/ui/ncurses/nc-statuslog.c
@@ -0,0 +1,113 @@
+/*
+ *  Copyright (C) 2016 IBM Corporation
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include <talloc/talloc.h>
+#include <types/types.h>
+#include <log/log.h>
+#include <util/util.h>
+#include <i18n/i18n.h>
+
+#include "nc-cui.h"
+#include "nc-textscreen.h"
+#include "nc-statuslog.h"
+
+static const int max_status_entry = 10000;
+
+struct statuslog_entry {
+       struct status           *status;
+       struct list_item        list;
+};
+
+struct statuslog {
+       struct list             status;
+       int                     n_status;
+       bool                    truncated;
+};
+
+struct statuslog_screen {
+       struct text_screen text_scr;
+};
+
+struct statuslog *statuslog_init(struct cui *cui)
+{
+       struct statuslog *sl;
+
+       sl = talloc(cui, struct statuslog);
+       sl->truncated = false;
+       sl->n_status = 0;
+       list_init(&sl->status);
+
+       return sl;
+}
+
+void statuslog_append_steal(struct cui *cui, struct statuslog *statuslog,
+               struct status *status)
+{
+       struct statuslog_entry *entry;
+
+       entry = talloc(statuslog, struct statuslog_entry);
+       entry->status = status;
+       talloc_steal(statuslog, status);
+
+       list_add_tail(&statuslog->status, &entry->list);
+
+       if (statuslog->n_status >= max_status_entry) {
+               list_remove(&statuslog->status.head);
+               statuslog->truncated = true;
+               statuslog->n_status--;
+       }
+
+       statuslog->n_status++;
+
+       if (cui->statuslog_screen) {
+               text_screen_append_line(&cui->statuslog_screen->text_scr,
+                               "%s", status->message);
+               text_screen_draw(&cui->statuslog_screen->text_scr);
+       }
+}
+
+struct statuslog_screen *statuslog_screen_init(struct cui *cui,
+               void (*on_exit)(struct cui *))
+{
+       struct statuslog_screen *screen;
+       struct statuslog_entry *entry;
+       const char *title;
+
+       screen = talloc_zero(cui, struct statuslog_screen);
+
+       title = _("Petitboot status log");
+
+       text_screen_init(&screen->text_scr, cui, title, on_exit);
+       list_for_each_entry(&cui->statuslog->status, entry, list) {
+               text_screen_append_line(&screen->text_scr, "%s",
+                               entry->status->message);
+       }
+       text_screen_draw(&screen->text_scr);
+
+       return screen;
+}
+
+struct nc_scr *statuslog_screen_scr(struct statuslog_screen *screen)
+{
+       return text_screen_scr(&screen->text_scr);
+}