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Cleanup

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This commit is contained in:
Martin Lund 2022-07-04 12:00:24 +02:00
parent 233152f0db
commit a3f5f6414b
1 changed files with 29 additions and 13 deletions
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42
src/tty.c
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@ -79,8 +79,8 @@ static bool map_o_del_bs = false;
static char hex_chars[2];
static unsigned char hex_char_index = 0;
static char tty_buffer[BUFSIZ*2];
static size_t tty_count = 0;
static char *tty_write_ptr = tty_buffer;
static size_t tty_buffer_count = 0;
static char *tty_buffer_write_ptr = tty_buffer;
static void optional_local_echo(char c)
{
@ -122,11 +122,24 @@ inline static unsigned char char_to_nibble(char c)
void tty_flush(int fd)
{
write(fd, tty_buffer, tty_count);
ssize_t count;
do
{
count = write(fd, tty_buffer, tty_buffer_count);
if (count < 0)
{
// Error
debug_printf("Write error while flushing tty buffer (%s)", strerror(errno));
break;
}
tty_buffer_count -= count;
}
while (tty_buffer_count > 0);
// Reset
tty_write_ptr = tty_buffer;
tty_count = 0;
tty_buffer_write_ptr = tty_buffer;
tty_buffer_count = 0;
}
ssize_t tty_write(int fd, const void *buffer, size_t count)
@ -138,27 +151,30 @@ ssize_t tty_write(int fd, const void *buffer, size_t count)
// Write byte by byte with output delay
for (size_t i=0; i<count; i++)
{
bytes_written = write(fd, buffer, 1);
if (bytes_written <= 0)
ssize_t retval = write(fd, buffer, 1);
if (retval < 0)
{
// Error
debug_printf("Write error (%s)", strerror(errno));
break;
}
bytes_written += retval;
fsync(fd);
delay(option.output_delay);
}
fsync(fd);
}
else
{
// Flush tty buffer if too full
if ((tty_count + count) > BUFSIZ)
if ((tty_buffer_count + count) > BUFSIZ)
{
tty_flush(fd);
}
// Copy bytes to tty buffer
memcpy(tty_write_ptr, buffer, count);
tty_write_ptr += count;
tty_count += count;
// Copy bytes to tty write buffer
memcpy(tty_buffer_write_ptr, buffer, count);
tty_buffer_write_ptr += count;
tty_buffer_count += count;
bytes_written = count;
}