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-rw-r--r--src/rq.c60
1 files changed, 56 insertions, 4 deletions
diff --git a/src/rq.c b/src/rq.c
index e223944..cf05bd5 100644
--- a/src/rq.c
+++ b/src/rq.c
@@ -46,6 +46,13 @@
# define DEFAULT_RATE 120 /* 2 hz */
#endif
+/**
+ * Delta-value of rate increment and rate decrement.
+ */
+#ifndef RATE_DELTA
+# define RATE_DELTA 10 /* 10/min */
+#endif
+
/**
@@ -193,6 +200,11 @@ static size_t display_len(const char *s)
*/
static int display_file(int fd, int ttyfd, long rate)
{
+#define SET_RATE \
+ (interval.it_value.tv_usec = 60000000L / rate, \
+ interval.it_value.tv_sec = interval.it_value.tv_usec / 1000000L, \
+ interval.it_value.tv_usec %= 1000000L)
+
ssize_t n;
char *buffer = NULL;
size_t ptr = 0;
@@ -220,15 +232,54 @@ static int display_file(int fd, int ttyfd, long rate)
} else if (n == 0) {
break;
}
+ ptr += (size_t)n;
+ }
+ if (buffer == NULL)
+ return 0;
+ if (ptr == size) {
+ new = realloc(buffer, ++size);
+ t (new == NULL);
+ buffer = new;
}
+ buffer[ptr++] = '\0';
/* Present file. */
- interval.it_value.tv_usec = 60000000L / rate;
- interval.it_value.tv_sec = interval.it_value.tv_usec / 1000000L;
- interval.it_value.tv_usec %= 1000000L;
+ SET_RATE;
for (s = buffer; *s; s = end) {
setitimer(ITIMER_REAL, &interval, NULL);
- pause();
+ rewait:
+ n = read(ttyfd, &c, sizeof(c));
+ if (n < 0) {
+ t (errno != EINTR);
+ c = 0;
+ } else if (n == 0) {
+ break;
+ }
+ switch (c) {
+ case '+': /* plus */
+ case '-': /* hyphen */
+ rate += (c == '+' ? RATE_DELTA : -RATE_DELTA);
+ rate = (rate <= 0 ? 1 : rate);
+ SET_RATE;
+ goto rewait;
+ case 'p': /* P */
+ ;/* TODO pause*/
+ break;
+ case 'q': /* Q */
+ goto done;
+ case 'B': /* down */
+ case 'C': /* right */
+ ;/* TODO next */
+ break;
+ case 'A': /* up */
+ case 'D': /* left */
+ ;/* TODO previous */
+ break;
+ case 0:
+ break;
+ default:
+ goto rewait;
+ }
get_terminal_size();
while (isspace(*s))
s++;
@@ -242,6 +293,7 @@ static int display_file(int fd, int ttyfd, long rate)
*end = c;
}
+done:
free(buffer);
return 0;