Status display

Alows to show status of current channels and users

1 files changed, 147 insertions, 0 deletions

diff --git a/src/common/display_status.c b/src/common/display_status.c
new file mode 100644
index 0000000..64ec79c
--- /dev/null
+++ b/src/common/display_status.c
@@ -0,0 +1,147 @@
+/* display status functions
+ *
+ * (C) 2017 by Andreas Eversberg <jolly@eversberg.eu>
+ * All Rights Reserved
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <pthread.h>
+#include <sys/ioctl.h>
+#include "sample.h"
+#include "sender.h"
+
+static int status_on = 0;
+static int line_count = 0;
+static int lines_total = 0;
+static char screen[MAX_HEIGHT_STATUS][MAX_DISPLAY_WIDTH];
+
+void print_status(int on)
+{
+	int i, j;
+	int w, h;
+
+	get_win_size(&w, &h);
+
+	if (w > MAX_DISPLAY_WIDTH)
+		w = MAX_DISPLAY_WIDTH;
+	h--;
+	if (h > lines_total)
+		h = lines_total;
+
+	printf("\0337\033[H\033[1;37m");
+	for (i = 0; i < h; i++) {
+		j = 0;
+		if (on) {
+			for (j = 0; j < w; j++)
+				putchar(screen[i][j]);
+		} else {
+			for (j = 0; j < w; j++)
+				putchar(' ');
+		}
+		putchar('\n');
+	}
+	printf("\0338"); fflush(stdout);
+}
+
+void display_status_on(int on)
+{
+	if (status_on)
+		print_status(0);
+
+	if (on < 0)
+		status_on = 1 - status_on;
+	else
+		status_on = on;
+
+	if (status_on)
+		print_status(1);
+}
+
+void display_status_limit_scroll(int on)
+{
+	int w, h;
+
+	if (!status_on)
+		return;
+
+	get_win_size(&w, &h);
+
+	printf("\0337");
+	printf("\033[%d;%dr", (on) ? lines_total + 1 : 1, h);
+	printf("\0338");
+}
+
+/* start status display */
+void display_status_start(void)
+{
+	memset(screen, ' ', sizeof(screen));
+	memset(screen[0], '-', sizeof(screen[0]));
+	strncpy(screen[0] + 4, "Channel Status", 14);
+	line_count = 1;
+}
+
+void display_status_channel(int channel, const char *type, const char *state)
+{
+	char line[MAX_DISPLAY_WIDTH];
+
+	/* add empty line after previous channel+subscriber */
+	if (line_count > 1 && line_count < MAX_HEIGHT_STATUS)
+		line_count++;
+
+	if (line_count == MAX_HEIGHT_STATUS)
+		return;
+
+	if (type)
+		snprintf(line, sizeof(line), "Channel: %d Type: %s State: %s", channel, type, state);
+	else
+		snprintf(line, sizeof(line), "Channel: %d State: %s", channel, state);
+	line[sizeof(line) - 1] = '\0';
+	strncpy(screen[line_count++], line, strlen(line));
+}
+
+void display_status_subscriber(const char *number, const char *state)
+{
+	char line[MAX_DISPLAY_WIDTH];
+
+	if (line_count == MAX_HEIGHT_STATUS)
+		return;
+
+	if (state)
+		snprintf(line, sizeof(line), "  Subscriber: %s State: %s", number, state);
+	else
+		snprintf(line, sizeof(line), "  Subscriber: %s", number);
+	line[sizeof(line) - 1] = '\0';
+	strncpy(screen[line_count++], line, strlen(line));
+}
+
+void display_status_end(void)
+{
+	if (line_count < MAX_HEIGHT_STATUS) {
+		memset(screen[line_count], '-', sizeof(screen[line_count]));
+		line_count++;
+	}
+	/* if last total lines exceed current line count, keep it, so removed lines are overwritten with spaces */
+	if (line_count > lines_total)
+		lines_total = line_count;
+	if (status_on)
+		print_status(1);
+	/* set new total lines */
+	lines_total = line_count;
+}
+
+