improve the timer and add a stopwatch subcmd (wip)

include/subcmds.h

@@ -6,6 +6,7 @@
  */
 
 void timer_subcmd(void *, int argc, char *argv[]);
+void stopwatch_subcmd(void *, int argc, char *argv[]);
 void subcmds_dev(void *, int argc, char *argv[]);
 void motd_subcmd(void *, int argc, char *argv[]);
 void subcmds_subcmd(void *, int argc, char *argv[]);

src/main.c

@@ -96,6 +96,7 @@ main(int argc, char *argv[])
   /* setup for subcommands */
   register_subcmd("motd", motd_subcmd, NULL);
   register_subcmd("timer", timer_subcmd, NULL);
+  register_subcmd("stopwatch", stopwatch_subcmd, NULL);
   register_subcmd("subcmds", subcmds_subcmd, NULL);
   register_subcmd("dev", subcmds_dev, NULL);
 

src/subcmds/clock.c

@@ -1,15 +1,21 @@
+#include <limits.h>
 #include <math.h>
+#include <poll.h>
 #include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
+#include <sys/poll.h>
+#include <termios.h>
 #include <time.h>
 #include <unistd.h>
 
+#include "log.h"
 #include "util.h"
 #include "subcmds.h"
+#include "ds.h"
 
 #define S_AS_MSEC 1000000
 #define PB_LEN 30
@@ -29,7 +35,24 @@
 	} \
 } while (0)
 
-int i, total_delay_s;
+int i, total_delay_s, up = 0;
+struct termios oldt;
+
+static void
+termios_noecho(void)
+{
+	struct termios newt;
+	tcgetattr(STDIN_FILENO, &oldt);
+	newt = oldt;
+	newt.c_lflag &= ~(ECHO);
+	tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+}
+
+static void
+termios_restore(void)
+{
+	tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
+}
 
 /**
  * @brief convert a time to a string in seconds ie:
@@ -244,6 +267,124 @@ timer_subcmd(void *, int argc, char *argv[])
 }
 
 static void
+stopwatch_exit(void)
+{
+	char *time_str;
+	time_t t;
+	struct tm tm;
+
+	termios_restore();
+	printf("\033[?25h");
+
+	time_str = sec2str(i);
+  t = time(NULL);
+  tm = *localtime(&t);
+	printf(
+		"\033[%dA\033[43;30;1m wom stopwatch \033[0m %s elapsed at %d/%02d/%02d %02d:%02d:%02d\n",
+		3 + up,
+		time_str,
+		tm.tm_year + 1900,
+		tm.tm_mon + 1,
+		tm.tm_mday,
+		tm.tm_hour,
+		tm.tm_min,
+		tm.tm_sec
+	);
+	free(time_str);
+}
+
+static void
+stopwatch_sig_exit(int sig)
+{
+	puts("\n");
+	stopwatch_exit();
+	exit(sig);
+}
+
+void
 stopwatch_subcmd(void *, int argc, char *argv[])
 {
+  int j, k, wi, pl;
+	char *pb_elapsed, *pb_left, *time_str, buf[PATH_MAX];
+	ds_dll_t *laps;
+	struct pollfd pfd = {
+		.fd = stdin->_fileno,
+		.events = POLLIN,
+		.revents = 0
+	};
+
+	/* disable terminal echoing */
+	termios_noecho();
+	atexit(stopwatch_exit);
+	signal(SIGINT, stopwatch_sig_exit);
+
+	/* create the progress bar */
+	pb_left = calloc(strlen(PB_FULL), sizeof(char) + 1);
+	strcpy(pb_left, PB_FULL);
+	pb_elapsed = calloc(strlen(PB_FULL), sizeof(char) + 1);
+
+	/* initalizie the linked list */
+	laps = ds_dll_init();
+
+	/* render ui */
+	printf("\033[?25l");
+	puts("");
+
+	for (j = i = 0;; i++) {
+		pl = poll(&pfd, 1, 0);
+		if (pl < 0) {
+			log_trace("pl: %d", pl);
+			/* TODO: error */
+			exit(1);
+		}
+
+		if (i != 0) {
+			printf("\033[%dA", 2 + (up > 0 ? up + 1 : 0));
+		}
+
+		if (pfd.revents & POLLIN) {
+			read(pfd.fd, buf, PATH_MAX);
+			ds_dll_insert(laps, (void *)(long)i);
+			up++;
+		}
+
+		printf("\033[2K\033[43;30;1m wom stopwatch \033[0m \033[33m%s\033[30m%s\033[0m\n", pb_elapsed, pb_left);
+		time_str = sec2str(i);
+		printf("\033[2K\033[90m                %s\033[0m\n", time_str);
+		free(time_str);
+
+		if (up) {
+			printf("\033[2K\033[0m                lap  time\033[0m\n");
+		}
+		k = 1;
+		for (ds_dll_t *cur = laps; cur; cur = cur->next, k++) {
+			if ((int)(long)cur->data) {
+				time_str = sec2str((int)(long)cur->data);
+				printf("\033[2K\033[0m                %03d  %s\033[0m\n", k, time_str);
+				free(time_str);
+			}
+		}
+
+		/* change the progress bar */
+		if (i % 2 == 1) {
+			if (i % 60 == 1) {
+				strcpy(pb_left, PB_FULL);
+				bzero(pb_elapsed, strlen(PB_FULL));
+				j = 0;
+			}
+			wi = strlen(PB_FULL) - (j * strlen("┃")) - strlen("┃");
+			strncat(pb_elapsed, "┃", strlen(PB_FULL));
+			pb_left[wi] = '\0';
+			j++;
+		}
+
+		sleep(1);
+	}
+
+	printf("\033[?25h");
+
+	free(pb_left);
+	free(pb_elapsed);
+
+  return;
 }