+
#include <fcntl.h>
#include <unistd.h>
#include <sys/select.h>
+#include <sys/stat.h>
#include <assert.h>
#include <ctype.h>
char *argv0;
+/* TODO: Convert file list to file array. */
typedef struct File File;
struct File {
char *name;
void
read_one(File *f, char *buf)
{
- ssize_t n;
+ ssize_t current;
+ ssize_t total;
char *b;
+ char c;
+ current = 0;
+ total = 0;
+ c = '\0';
b = buf + f->pos;
memset(b, ' ', f->width);
- while ((n = read(f->fd, b, f->width)) > 0) {
- b += n;
- debug("read %zd from %s\n", n, f->name);
- }
-
- if (n > -1) {
- if (*(b - 1) == '\n')
- *(b - 1) = ' ';
- } else {
- error(
- "Failed to read: \"%s\". Error: %s\n",
- f->name,
- strerror(errno)
- );
- }
-
+ while ((current = read(f->fd, &c, 1)) && c != '\n' && c != '\0' && total++ < f->width)
+ *b++ = c;
+ if (current == -1)
+ error("Failed to read: \"%s\". Error: %s\n", f->name, strerror(errno));
+ /* TODO Record timestamp read */
close(f->fd);
f->fd = -1;
}
fd_set fds;
int maxfd;
int ready;
+ struct stat st;
FD_ZERO(&fds);
- /* TODO: stat then check TTL */
+ /* TODO: Check TTL */
for (File *f = cfg->files; f; f = f->next) {
+ /* TODO: Create the FIFO if it doesn't already exist. */
+ if (lstat(f->name, &st) < 0)
+ fatal("Cannot stat \"%s\". Error: %s\n", f->name, strerror(errno));
+ if (!(st.st_mode & S_IFIFO))
+ fatal("\"%s\" is not a FIFO\n", f->name);
debug("opening: %s\n", f->name);
if (f->fd < 0)
f->fd = open(f->name, O_RDONLY | O_NONBLOCK);
printf("%s\n", buf);
/* TODO: nanosleep and nano time diff */
for (;;) {
+ /* TODO: Check TTL and maybe blank-out */
+ /* TODO: How to trigger TTL check? On select? Alarm signal? */
+ /* TODO: Option to set X root window title or print */
read_all(cfg, buf);
printf("%s\n", buf);
}