penwing/zeniba-nsxiv
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fix: broken statusbar after key-handler cancellation

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to reproduce:
1. have an image-info script
2. invoke the key-handler
3. cancle invocation by pressing `escape`
at this point, the statusbar ends up being empty.

the regression seems to be caused by 6922d5d (changing select to poll),
unsure why that is.

in any case, this simplifies read_info quite a bit and solves the
regression as well. in short:

* read straight into the statusbar buffer
* if read succeeds, make sure buffer is null terminated and replace any
  newline with space
* close the script
This commit is contained in:
NRK 2022-05-09 19:06:24 +06:00 committed by N-R-K
parent f255e1cc12
commit b4268fbf38
1 changed files with 6 additions and 25 deletions
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31
main.c
View file

@ -73,7 +73,6 @@ static bool resized = false;
static struct {
extcmd_t f, ft;
int fd;
unsigned int i, lastsep;
pid_t pid;
} info;
@ -296,7 +295,6 @@ void open_info(void)
if (pfd.readfd >= 0) {
fcntl(pfd.readfd, F_SETFL, O_NONBLOCK);
info.fd = pfd.readfd;
info.i = info.lastsep = 0;
info.pid = pfd.pid;
}
}
@ -304,32 +302,15 @@ void open_info(void)
static void read_info(void)
{
ssize_t i, n;
char buf[BAR_L_LEN];
while (true) {
n = read(info.fd, buf, sizeof(buf));
if (n < 0 && errno == EAGAIN)
return;
else if (n == 0)
goto end;
for (i = 0; i < n; i++) {
if (buf[i] == '\n') {
if (info.lastsep == 0) {
win.bar.l.buf[info.i++] = ' ';
info.lastsep = 1;
}
} else {
win.bar.l.buf[info.i++] = buf[i];
info.lastsep = 0;
}
if (info.i + 1 == win.bar.l.size)
goto end;
if ((n = read(info.fd, win.bar.l.buf, win.bar.l.size - 1)) > 0) {
win.bar.l.buf[n] = '\0';
for (i = 0; i < n; ++i) {
if (win.bar.l.buf[i] == '\n')
win.bar.l.buf[i] = ' ';
}
win_draw(&win);
}
end:
info.i -= info.lastsep;
win.bar.l.buf[info.i] = '\0';
win_draw(&win);
close_info();
}