-/*
- * Copyright (C) 2011 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2011 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file interactive.c Readline abstraction for interactive sessions. */
int num_columns;
int num_key_bindings;
char empty_line[1000];
+ char key_sequence[32];
+ unsigned key_sequence_length;
struct task *task;
struct btr_node *stdout_btrn;
bool last_write_was_status;
bool caught_sigterm;
Keymap standard_km;
Keymap bare_km;
+ int fd_flags[2];
};
static struct i9e_private i9e_private, *i9ep = &i9e_private;
static void wipe_bottom_line(void)
{
- char x[] = " ";
- int n = i9ep->num_columns;
-
- /*
- * For reasons beyond my understanding, writing more than 68 characters
- * here causes MacOS to mess up the terminal. Writing a line of spaces
- * in smaller chunks works fine though. Weird.
- */
- fprintf(i9ep->stderr_stream, "\r");
- while (n > 0) {
- if (n >= sizeof(x)) {
- fprintf(i9ep->stderr_stream, "%s", x);
- n -= sizeof(x);
- continue;
- }
- x[n] = '\0';
- fprintf(i9ep->stderr_stream, "%s", x);
- break;
- }
- fprintf(i9ep->stderr_stream, "\r");
+ fprintf(i9ep->stderr_stream, "\r%s\r", i9ep->empty_line);
}
#ifndef RL_FREE_KEYMAP_DECLARED
if (hf)
write_history(hf);
wipe_bottom_line();
+ fcntl(i9ep->ici->fds[0], F_SETFL, i9ep->fd_flags[0]);
+ fcntl(i9ep->ici->fds[1], F_SETFL, i9ep->fd_flags[1]);
}
static void clear_bottom_line(void)
ret = 0;
if (i9ep->caught_sigint)
goto rm_btrn;
- while (input_available())
+ while (input_available()) {
+ if (i9ep->stdout_btrn) {
+ unsigned len = i9ep->key_sequence_length;
+ assert(len < sizeof(i9ep->key_sequence) - 1);
+ buf = i9ep->key_sequence + len;
+ ret = read(i9ep->ici->fds[0], buf, 1);
+ if (ret < 0) {
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ goto rm_btrn;
+ }
+ ret = -E_I9E_EOF;
+ if (ret == 0)
+ goto rm_btrn;
+ buf[1] = '\0';
+ i9ep->key_sequence_length++;
+ rl_stuff_char((int)(unsigned char)*buf);
+ }
rl_callback_read_char();
+ ret = 0;
+ }
if (!i9ep->stdout_btrn)
goto out;
ret = btr_node_status(i9ep->stdout_btrn, 0, BTR_NT_LEAF);
{
int i, ret;
+again:
+ if (i9ep->key_sequence_length == 0)
+ return 0;
for (i = i9ep->num_key_bindings - 1; i >= 0; i--) {
- if (strcmp(rl_executing_keyseq, i9ep->ici->bound_keyseqs[i]))
+ if (strcmp(i9ep->key_sequence, i9ep->ici->bound_keyseqs[i]))
continue;
+ i9ep->key_sequence[0] = '\0';
+ i9ep->key_sequence_length = 0;
ret = i9ep->ici->key_handler(i);
return ret < 0? ret : 0;
}
- assert(0);
+ PARA_WARNING_LOG("ignoring key %d\n", i9ep->key_sequence[0]);
+ /*
+ * We received an undefined key sequence. Throw away the first byte,
+ * and try to parse the remainder.
+ */
+ memmove(i9ep->key_sequence, i9ep->key_sequence + 1,
+ i9ep->key_sequence_length); /* move also terminating zero byte */
+ i9ep->key_sequence_length--;
+ goto again;
}
/**
memset(i9ep, 0, sizeof(struct i9e_private));
if (!isatty(ici->fds[0]))
return -E_I9E_SETUPTERM;
+ ret = fcntl(ici->fds[0], F_GETFL);
+ if (ret < 0)
+ return -E_I9E_SETUPTERM;
+ i9ep->fd_flags[0] = ret;
+ ret = fcntl(ici->fds[1], F_GETFL);
+ if (ret < 0)
+ return -E_I9E_SETUPTERM;
+ i9ep->fd_flags[1] = ret;
ret = mark_fd_nonblocking(ici->fds[0]);
if (ret < 0)
return ret;
int i;
/* bind each key sequence to our dispatcher */
for (i = 0; (seq = ici->bound_keyseqs[i]); i++) {
+ if (strlen(seq) >= sizeof(i9ep->key_sequence) - 1) {
+ PARA_WARNING_LOG("ignoring overlong key %s\n",
+ seq);
+ continue;
+ }
if (rl_bind_keyseq_in_map(seq,
dispatch_key, i9ep->bare_km) != 0)
PARA_WARNING_LOG("could not bind #%d: %s\n", i, seq);