// Low level input function
int os_inchar(uint8_t *buf, int maxlen, int ms, int tb_change_cnt)
{
if (maxlen && rbuffer_size(input_buffer)) {
return (int)rbuffer_read(input_buffer, (char *)buf, (size_t)maxlen);
}
InbufPollResult result;
if (ms >= 0) {
if ((result = inbuf_poll(ms)) == kInputNone) {
return 0;
}
} else {
if ((result = inbuf_poll((int)p_ut)) == kInputNone) {
if (read_stream.closed && silent_mode) {
// Drained eventloop & initial input; exit silent/batch-mode (-es/-Es).
read_error_exit();
}
if (trigger_cursorhold() && !typebuf_changed(tb_change_cnt)) {
create_cursorhold_event();
} else {
before_blocking();
result = inbuf_poll(-1);
}
}
}
// If input was put directly in typeahead buffer bail out here.
if (typebuf_changed(tb_change_cnt)) {
return 0;
}
if (maxlen && rbuffer_size(input_buffer)) {
// Safe to convert rbuffer_read to int, it will never overflow since we use
// relatively small buffers.
return (int)rbuffer_read(input_buffer, (char *)buf, (size_t)maxlen);
}
// If there are events, return the keys directly
if (maxlen && pending_events()) {
return push_event_key(buf, maxlen);
}
if (result == kInputEof) {
read_error_exit();
}
return 0;
}
// Low level input function
int os_inchar(uint8_t *buf, int maxlen, int ms, int tb_change_cnt)
{
if (rbuffer_size(input_buffer)) {
return (int)rbuffer_read(input_buffer, (char *)buf, (size_t)maxlen);
}
InbufPollResult result;
if (ms >= 0) {
if ((result = inbuf_poll(ms)) == kInputNone) {
return 0;
}
} else {
if ((result = inbuf_poll((int)p_ut)) == kInputNone) {
if (trigger_cursorhold() && maxlen >= 3
&& !typebuf_changed(tb_change_cnt)) {
buf[0] = K_SPECIAL;
buf[1] = KS_EXTRA;
buf[2] = KE_CURSORHOLD;
return 3;
}
before_blocking();
result = inbuf_poll(-1);
}
}
// If input was put directly in typeahead buffer bail out here.
if (typebuf_changed(tb_change_cnt)) {
return 0;
}
if (rbuffer_size(input_buffer)) {
// Safe to convert rbuffer_read to int, it will never overflow since we use
// relatively small buffers.
return (int)rbuffer_read(input_buffer, (char *)buf, (size_t)maxlen);
}
// If there are deferred events, return the keys directly
if (loop_has_deferred_events(&loop)) {
return push_event_key(buf, maxlen);
}
if (result == kInputEof) {
read_error_exit();
}
return 0;
}
static void read_cb(Stream *stream, RBuffer *buf, void *data, bool at_eof)
{
if (at_eof) {
input_eof = true;
}
assert(rbuffer_space(input_buffer) >= rbuffer_size(buf));
RBUFFER_UNTIL_EMPTY(buf, ptr, len) {
(void)rbuffer_write(input_buffer, ptr, len);
rbuffer_consumed(buf, len);
}
bool input_available(void)
{
return rbuffer_size(input_buffer) != 0;
}
