2005-09-15 09:58:31 -04:00
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/* Support for keyboard interface */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef __hpux__
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#include <limits.h>
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#define HPUX_PIPE (len > PIPE_BUF || errno != EAGAIN)
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#else
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#define HPUX_PIPE 1
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#endif
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#include "elinks.h"
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#include "config/options.h"
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#include "intl/gettext/libintl.h"
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#include "main/select.h"
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#include "main/timer.h"
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#include "osdep/ascii.h"
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#include "osdep/osdep.h"
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#include "terminal/hardio.h"
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#include "terminal/itrm.h"
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#include "terminal/kbd.h"
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#include "terminal/mouse.h"
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#include "terminal/terminal.h"
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#include "util/error.h"
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#include "util/memory.h"
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#include "util/string.h"
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#include "util/time.h"
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/* TODO: move stuff from here to itrm.{c,h} and mouse.{c,h} */
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struct itrm *ditrm = NULL;
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static void free_itrm(struct itrm *);
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static void in_kbd(struct itrm *);
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static void in_sock(struct itrm *);
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static int process_queue(struct itrm *);
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static void handle_itrm_stdin(struct itrm *);
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static void unhandle_itrm_stdin(struct itrm *);
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int
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is_blocked(void)
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{
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return ditrm && ditrm->blocked;
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}
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void
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free_all_itrms(void)
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{
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if (ditrm) free_itrm(ditrm);
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}
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2006-07-24 12:35:58 -04:00
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/* A select_handler_T write_func for itrm->out.sock. This is called
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* when there is data in itrm->out.queue and it is possible to write
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* it to itrm->out.sock. When itrm->out.queue becomes empty, this
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* handler is temporarily removed. */
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2005-09-15 09:58:31 -04:00
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static void
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itrm_queue_write(struct itrm *itrm)
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{
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int written;
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int qlen = int_min(itrm->out.queue.len, 128);
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assertm(qlen, "event queue empty");
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if_assert_failed return;
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written = safe_write(itrm->out.sock, itrm->out.queue.data, qlen);
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if (written <= 0) {
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if (written < 0) free_itrm(itrm); /* write error */
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return;
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}
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itrm->out.queue.len -= written;
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if (itrm->out.queue.len == 0) {
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set_handlers(itrm->out.sock,
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get_handler(itrm->out.sock, SELECT_HANDLER_READ),
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NULL,
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get_handler(itrm->out.sock, SELECT_HANDLER_ERROR),
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get_handler(itrm->out.sock, SELECT_HANDLER_DATA));
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} else {
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assert(itrm->out.queue.len > 0);
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memmove(itrm->out.queue.data, itrm->out.queue.data + written, itrm->out.queue.len);
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}
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}
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void
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itrm_queue_event(struct itrm *itrm, unsigned char *data, int len)
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{
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int w = 0;
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if (!len) return;
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if (!itrm->out.queue.len && can_write(itrm->out.sock)) {
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w = safe_write(itrm->out.sock, data, len);
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if (w <= 0 && HPUX_PIPE) {
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register_bottom_half(free_itrm, itrm);
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return;
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}
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}
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if (w < len) {
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int left = len - w;
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unsigned char *c = mem_realloc(itrm->out.queue.data,
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itrm->out.queue.len + left);
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if (!c) {
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free_itrm(itrm);
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return;
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}
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itrm->out.queue.data = c;
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memcpy(itrm->out.queue.data + itrm->out.queue.len, data + w, left);
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itrm->out.queue.len += left;
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set_handlers(itrm->out.sock,
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get_handler(itrm->out.sock, SELECT_HANDLER_READ),
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(select_handler_T) itrm_queue_write,
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(select_handler_T) free_itrm, itrm);
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}
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}
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void
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kbd_ctrl_c(void)
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{
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struct term_event ev;
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if (!ditrm) return;
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set_kbd_term_event(&ev, KBD_CTRL_C, KBD_MOD_NONE);
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itrm_queue_event(ditrm, (unsigned char *) &ev, sizeof(ev));
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}
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#define write_sequence(fd, seq) \
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hard_write(fd, seq, sizeof(seq) - 1)
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#define INIT_TERMINAL_SEQ "\033)0\0337" /* Special Character and Line Drawing Set, Save Cursor */
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#define INIT_ALT_SCREEN_SEQ "\033[?47h" /* Use Alternate Screen Buffer */
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static void
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send_init_sequence(int h, int altscreen)
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{
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write_sequence(h, INIT_TERMINAL_SEQ);
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/* If alternate screen is supported switch to it. */
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if (altscreen) {
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write_sequence(h, INIT_ALT_SCREEN_SEQ);
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}
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#ifdef CONFIG_MOUSE
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send_mouse_init_sequence(h);
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#endif
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}
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#define DONE_CLS_SEQ "\033[2J" /* Erase in Display, Clear All */
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#define DONE_TERMINAL_SEQ "\0338\r \b" /* Restore Cursor (DECRC) + ??? */
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#define DONE_ALT_SCREEN_SEQ "\033[?47l" /* Use Normal Screen Buffer */
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static void
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send_done_sequence(int h, int altscreen)
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{
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write_sequence(h, DONE_CLS_SEQ);
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#ifdef CONFIG_MOUSE
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send_mouse_done_sequence(h);
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#endif
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/* Switch from alternate screen. */
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if (altscreen) {
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write_sequence(h, DONE_ALT_SCREEN_SEQ);
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}
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write_sequence(h, DONE_TERMINAL_SEQ);
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}
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#undef write_sequence
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void
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resize_terminal(void)
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{
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struct term_event ev;
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int width, height;
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get_terminal_size(ditrm->out.std, &width, &height);
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set_resize_term_event(&ev, width, height);
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itrm_queue_event(ditrm, (char *) &ev, sizeof(ev));
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}
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static void
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get_terminal_name(unsigned char name[MAX_TERM_LEN])
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{
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unsigned char *term = getenv("TERM");
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int i;
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memset(name, 0, MAX_TERM_LEN);
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if (!term) return;
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for (i = 0; term[i] != 0 && i < MAX_TERM_LEN - 1; i++)
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name[i] = isident(term[i]) ? term[i] : '-';
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}
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static int
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setraw(int fd, struct termios *p)
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{
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struct termios t;
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memset(&t, 0, sizeof(t));
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if (tcgetattr(fd, &t)) return -1;
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if (p) copy_struct(p, &t);
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elinks_cfmakeraw(&t);
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t.c_lflag |= ISIG;
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#ifdef TOSTOP
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t.c_lflag |= TOSTOP;
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#endif
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t.c_oflag |= OPOST;
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if (tcsetattr(fd, TCSANOW, &t)) return -1;
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return 0;
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}
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2006-07-24 12:35:58 -04:00
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/* Construct the struct itrm of this process, make ditrm point to it,
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* set up select() handlers, and send the initial interlink packet.
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*
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* The first five parameters are file descriptors that this function
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* saves in submembers of struct itrm, and for which this function may
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* set select() handlers. Please see the definitions of struct
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* itrm_in and struct itrm_out for further explanations.
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*
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* param member file if process is master file if process is slave
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* ------ ------ ------------------------- ------------------------
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* std_in in.std read tty device (or pipe) read tty device (or pipe)
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* std_out out.std write tty device (or pipe) write tty device (or pipe)
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* sock_in in.sock ==std_out (masterhood flag) read socket from master
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* sock_out out.sock write pipe to same process write socket to master
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* ctl_in in.ctl control tty device control tty device
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*
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* The remaining three parameters control the initial interlink packet.
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*
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* init_string = A string to be passed to the master process. Need
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* not be null-terminated. If remote==0, this is a URI.
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* Otherwise, this is a remote command.
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* init_len = The length of init_string, in bytes.
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* remote = 0 if asking the master to start a new session
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* and display it via this process. Otherwise,
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* enum remote_session_flags. */
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2005-09-15 09:58:31 -04:00
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void
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handle_trm(int std_in, int std_out, int sock_in, int sock_out, int ctl_in,
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void *init_string, int init_len, int remote)
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{
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struct itrm *itrm;
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struct terminal_info info;
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struct term_event_size *size = &info.event.info.size;
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unsigned char *ts;
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memset(&info, 0, sizeof(info));
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get_terminal_size(ctl_in, &size->width, &size->height);
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info.event.ev = EVENT_INIT;
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info.system_env = get_system_env();
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info.length = init_len;
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if (remote) {
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info.session_info = remote;
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info.magic = INTERLINK_REMOTE_MAGIC;
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} else {
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info.session_info = get_cmd_opt_int("base-session");
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info.magic = INTERLINK_NORMAL_MAGIC;
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}
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itrm = mem_calloc(1, sizeof(*itrm));
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if (!itrm) return;
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itrm->in.queue.data = mem_calloc(1, ITRM_IN_QUEUE_SIZE);
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if (!itrm->in.queue.data) {
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mem_free(itrm);
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return;
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}
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ditrm = itrm;
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itrm->in.std = std_in;
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itrm->out.std = std_out;
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itrm->in.sock = sock_in;
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itrm->out.sock = sock_out;
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itrm->in.ctl = ctl_in;
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itrm->timer = TIMER_ID_UNDEF;
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itrm->remote = !!remote;
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/* FIXME: Combination altscreen + xwin does not work as it should,
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* mouse clicks are reportedly partially ignored. */
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if (info.system_env & (ENV_SCREEN | ENV_XWIN))
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itrm->altscreen = 1;
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if (!remote) {
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if (ctl_in >= 0) setraw(ctl_in, &itrm->t);
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send_init_sequence(std_out, itrm->altscreen);
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handle_terminal_resize(ctl_in, resize_terminal);
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#ifdef CONFIG_MOUSE
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enable_mouse();
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#endif
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}
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handle_itrm_stdin(itrm);
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if (sock_in != std_out)
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set_handlers(sock_in, (select_handler_T) in_sock,
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NULL, (select_handler_T) free_itrm, itrm);
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get_terminal_name(info.name);
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ts = get_cwd();
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if (ts) {
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memcpy(info.cwd, ts, int_min(strlen(ts), MAX_CWD_LEN));
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mem_free(ts);
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}
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itrm_queue_event(itrm, (char *) &info, TERMINAL_INFO_SIZE);
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itrm_queue_event(itrm, (char *) init_string, init_len);
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}
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2006-07-24 12:35:58 -04:00
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/* A select_handler_T read_func and error_func for the pipe (long) h.
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* This is called when the subprocess started on the terminal of this
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* ELinks process exits. ELinks then resumes using the terminal. */
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2005-09-15 09:58:31 -04:00
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static void
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unblock_itrm_x(void *h)
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{
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close_handle(h);
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if (!ditrm) return;
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unblock_itrm(0);
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resize_terminal();
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}
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int
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unblock_itrm(int fd)
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{
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2005-09-16 07:55:40 -04:00
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if (!ditrm) return -1;
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2005-09-15 09:58:31 -04:00
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2005-09-16 07:55:40 -04:00
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if (ditrm->in.ctl >= 0 && setraw(ditrm->in.ctl, NULL)) return -1;
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ditrm->blocked = 0;
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send_init_sequence(ditrm->out.std, ditrm->altscreen);
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2005-09-15 09:58:31 -04:00
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2005-09-16 07:55:40 -04:00
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handle_itrm_stdin(ditrm);
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resume_mouse(ditrm->mouse_h);
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2005-09-15 09:58:31 -04:00
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2005-09-16 07:55:40 -04:00
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handle_terminal_resize(ditrm->in.ctl, resize_terminal);
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2005-09-15 09:58:31 -04:00
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unblock_stdin();
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return 0;
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}
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void
|
|
|
|
block_itrm(int fd)
|
|
|
|
{
|
2005-09-16 11:20:12 -04:00
|
|
|
if (!ditrm) return;
|
2005-09-15 09:58:31 -04:00
|
|
|
|
2005-09-16 11:20:12 -04:00
|
|
|
ditrm->blocked = 1;
|
2005-09-15 09:58:31 -04:00
|
|
|
block_stdin();
|
2006-07-28 08:48:57 -04:00
|
|
|
kill_timer(&ditrm->timer);
|
|
|
|
ditrm->in.queue.len = 0;
|
2005-09-16 11:20:12 -04:00
|
|
|
unhandle_terminal_resize(ditrm->in.ctl);
|
|
|
|
send_done_sequence(ditrm->out.std, ditrm->altscreen);
|
|
|
|
tcsetattr(ditrm->in.ctl, TCSANOW, &ditrm->t);
|
|
|
|
unhandle_itrm_stdin(ditrm);
|
|
|
|
suspend_mouse(ditrm->mouse_h);
|
2005-09-15 09:58:31 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
free_itrm(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
if (!itrm) return;
|
|
|
|
|
|
|
|
if (!itrm->remote) {
|
|
|
|
if (itrm->orig_title && *itrm->orig_title) {
|
|
|
|
set_window_title(itrm->orig_title);
|
|
|
|
|
|
|
|
} else if (itrm->touched_title) {
|
|
|
|
/* Set the window title to the value of $TERM if X11
|
|
|
|
* wasn't compiled in. Should hopefully make at least
|
|
|
|
* half the users happy. (debian bug #312955) */
|
|
|
|
unsigned char title[MAX_TERM_LEN];
|
|
|
|
|
|
|
|
get_terminal_name(title);
|
|
|
|
if (*title)
|
|
|
|
set_window_title(title);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
unhandle_terminal_resize(itrm->in.ctl);
|
|
|
|
#ifdef CONFIG_MOUSE
|
|
|
|
disable_mouse();
|
|
|
|
#endif
|
|
|
|
send_done_sequence(itrm->out.std, itrm->altscreen);
|
|
|
|
tcsetattr(itrm->in.ctl, TCSANOW, &itrm->t);
|
|
|
|
}
|
|
|
|
|
|
|
|
mem_free_set(&itrm->orig_title, NULL);
|
|
|
|
|
|
|
|
clear_handlers(itrm->in.std);
|
|
|
|
clear_handlers(itrm->in.sock);
|
|
|
|
clear_handlers(itrm->out.std);
|
|
|
|
clear_handlers(itrm->out.sock);
|
|
|
|
|
|
|
|
kill_timer(&itrm->timer);
|
|
|
|
|
|
|
|
if (itrm == ditrm) ditrm = NULL;
|
|
|
|
mem_free_if(itrm->out.queue.data);
|
|
|
|
mem_free_if(itrm->in.queue.data);
|
|
|
|
mem_free(itrm);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Resize terminal to dimensions specified by @text string.
|
|
|
|
* @text should look like "width,height,old-width,old-height" where width and
|
|
|
|
* height are integers. */
|
|
|
|
static inline void
|
|
|
|
resize_terminal_from_str(unsigned char *text)
|
|
|
|
{
|
|
|
|
enum { NEW_WIDTH = 0, NEW_HEIGHT, OLD_WIDTH, OLD_HEIGHT, NUMBERS } i;
|
|
|
|
int numbers[NUMBERS];
|
|
|
|
|
|
|
|
assert(text && *text);
|
|
|
|
if_assert_failed return;
|
|
|
|
|
|
|
|
for (i = 0; i < NUMBERS; i++) {
|
|
|
|
unsigned char *p = strchr(text, ',');
|
|
|
|
|
|
|
|
if (p) {
|
|
|
|
*p++ = '\0';
|
|
|
|
|
|
|
|
} else if (i < OLD_HEIGHT) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
numbers[i] = atoi(text);
|
|
|
|
|
|
|
|
if (p) text = p;
|
|
|
|
}
|
|
|
|
|
|
|
|
resize_window(numbers[NEW_WIDTH], numbers[NEW_HEIGHT],
|
|
|
|
numbers[OLD_WIDTH], numbers[OLD_HEIGHT]);
|
|
|
|
resize_terminal();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
dispatch_special(unsigned char *text)
|
|
|
|
{
|
|
|
|
switch (text[0]) {
|
|
|
|
case TERM_FN_TITLE:
|
|
|
|
if (ditrm) {
|
|
|
|
if (ditrm->remote)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (!ditrm->orig_title)
|
|
|
|
ditrm->orig_title = get_window_title();
|
|
|
|
ditrm->touched_title = 1;
|
|
|
|
}
|
|
|
|
set_window_title(text + 1);
|
|
|
|
break;
|
|
|
|
case TERM_FN_RESIZE:
|
|
|
|
if (ditrm && ditrm->remote)
|
|
|
|
break;
|
|
|
|
|
|
|
|
resize_terminal_from_str(text + 1);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void inline
|
|
|
|
safe_hard_write(int fd, unsigned char *buf, int len)
|
|
|
|
{
|
|
|
|
if (is_blocked()) return;
|
|
|
|
|
|
|
|
want_draw();
|
|
|
|
hard_write(fd, buf, len);
|
|
|
|
done_draw();
|
|
|
|
}
|
|
|
|
|
2006-07-24 12:35:58 -04:00
|
|
|
/* A select_handler_T read_func for itrm->in.sock. A slave process
|
|
|
|
* calls this when the master sends it data to be displayed. The
|
|
|
|
* master process never calls this. */
|
2005-09-15 09:58:31 -04:00
|
|
|
static void
|
|
|
|
in_sock(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
struct string path;
|
|
|
|
struct string delete;
|
|
|
|
char ch;
|
|
|
|
int fg;
|
|
|
|
ssize_t bytes_read, i, p;
|
|
|
|
unsigned char buf[ITRM_OUT_QUEUE_SIZE];
|
|
|
|
|
|
|
|
bytes_read = safe_read(itrm->in.sock, buf, ITRM_OUT_QUEUE_SIZE);
|
|
|
|
if (bytes_read <= 0) goto free_and_return;
|
|
|
|
|
|
|
|
qwerty:
|
|
|
|
for (i = 0; i < bytes_read; i++)
|
|
|
|
if (!buf[i])
|
|
|
|
goto has_nul_byte;
|
|
|
|
|
|
|
|
safe_hard_write(itrm->out.std, buf, bytes_read);
|
|
|
|
return;
|
|
|
|
|
|
|
|
has_nul_byte:
|
|
|
|
if (i) safe_hard_write(itrm->out.std, buf, i);
|
|
|
|
|
|
|
|
i++;
|
|
|
|
assert(ITRM_OUT_QUEUE_SIZE - i > 0);
|
|
|
|
memmove(buf, buf + i, ITRM_OUT_QUEUE_SIZE - i);
|
|
|
|
bytes_read -= i;
|
|
|
|
p = 0;
|
|
|
|
|
|
|
|
#define RD(xx) { \
|
|
|
|
unsigned char cc; \
|
|
|
|
\
|
|
|
|
if (p < bytes_read) \
|
|
|
|
cc = buf[p++]; \
|
|
|
|
else if ((hard_read(itrm->in.sock, &cc, 1)) <= 0) \
|
|
|
|
goto free_and_return; \
|
|
|
|
xx = cc; \
|
|
|
|
}
|
|
|
|
|
|
|
|
RD(fg);
|
|
|
|
|
|
|
|
if (!init_string(&path)) goto free_and_return;
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
RD(ch);
|
|
|
|
if (!ch) break;
|
|
|
|
add_char_to_string(&path, ch);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!init_string(&delete)) {
|
|
|
|
done_string(&path);
|
|
|
|
goto free_and_return;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
RD(ch);
|
|
|
|
if (!ch) break;
|
|
|
|
add_char_to_string(&delete, ch);
|
|
|
|
}
|
|
|
|
|
|
|
|
#undef RD
|
|
|
|
|
|
|
|
if (!*path.source) {
|
|
|
|
dispatch_special(delete.source);
|
|
|
|
|
|
|
|
} else {
|
|
|
|
int blockh;
|
|
|
|
unsigned char *param;
|
|
|
|
int path_len, del_len, param_len;
|
|
|
|
|
|
|
|
if (is_blocked() && fg) {
|
|
|
|
if (*delete.source) unlink(delete.source);
|
|
|
|
goto nasty_thing;
|
|
|
|
}
|
|
|
|
|
|
|
|
path_len = path.length;
|
|
|
|
del_len = delete.length;
|
|
|
|
param_len = path_len + del_len + 3;
|
|
|
|
|
|
|
|
param = mem_alloc(param_len);
|
|
|
|
if (!param) goto nasty_thing;
|
|
|
|
|
|
|
|
param[0] = fg;
|
|
|
|
memcpy(param + 1, path.source, path_len + 1);
|
|
|
|
memcpy(param + 1 + path_len + 1, delete.source, del_len + 1);
|
|
|
|
|
|
|
|
if (fg == 1) block_itrm(itrm->in.ctl);
|
|
|
|
|
|
|
|
blockh = start_thread((void (*)(void *, int)) exec_thread,
|
|
|
|
param, param_len);
|
|
|
|
mem_free(param);
|
|
|
|
|
|
|
|
if (blockh == -1) {
|
|
|
|
if (fg == 1)
|
|
|
|
unblock_itrm(itrm->in.ctl);
|
|
|
|
|
|
|
|
goto nasty_thing;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fg == 1) {
|
|
|
|
set_handlers(blockh, (select_handler_T) unblock_itrm_x,
|
|
|
|
NULL, (select_handler_T) unblock_itrm_x,
|
|
|
|
(void *) (long) blockh);
|
|
|
|
|
|
|
|
} else {
|
|
|
|
set_handlers(blockh, close_handle, NULL, close_handle,
|
|
|
|
(void *) (long) blockh);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
nasty_thing:
|
|
|
|
done_string(&path);
|
|
|
|
done_string(&delete);
|
|
|
|
assert(ITRM_OUT_QUEUE_SIZE - p > 0);
|
|
|
|
memmove(buf, buf + p, ITRM_OUT_QUEUE_SIZE - p);
|
|
|
|
bytes_read -= p;
|
|
|
|
|
|
|
|
goto qwerty;
|
|
|
|
|
|
|
|
free_and_return:
|
|
|
|
free_itrm(itrm);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
kbd_timeout(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
struct term_event ev;
|
|
|
|
|
|
|
|
itrm->timer = TIMER_ID_UNDEF;
|
|
|
|
|
2006-07-28 08:48:57 -04:00
|
|
|
assertm(itrm->in.queue.len, "timeout on empty queue");
|
|
|
|
assert(!itrm->blocked); /* block_itrm should have killed itrm->timer */
|
|
|
|
if_assert_failed return;
|
|
|
|
|
2005-09-15 09:58:31 -04:00
|
|
|
if (can_read(itrm->in.std)) {
|
|
|
|
in_kbd(itrm);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_kbd_term_event(&ev, KBD_ESC, KBD_MOD_NONE);
|
|
|
|
itrm_queue_event(itrm, (char *) &ev, sizeof(ev));
|
|
|
|
|
|
|
|
if (--itrm->in.queue.len)
|
|
|
|
memmove(itrm->in.queue.data, itrm->in.queue.data + 1, itrm->in.queue.len);
|
|
|
|
|
|
|
|
while (process_queue(itrm));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Returns the length of the escape sequence */
|
|
|
|
static inline int
|
|
|
|
get_esc_code(unsigned char *str, int len, unsigned char *code, int *num)
|
|
|
|
{
|
|
|
|
int pos;
|
|
|
|
|
|
|
|
*num = 0;
|
|
|
|
*code = '\0';
|
|
|
|
|
|
|
|
for (pos = 2; pos < len; pos++) {
|
|
|
|
if (!isdigit(str[pos]) || pos > 7) {
|
|
|
|
*code = str[pos];
|
|
|
|
|
|
|
|
return pos + 1;
|
|
|
|
}
|
|
|
|
*num = *num * 10 + str[pos] - '0';
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Define it to dump queue content in a readable form,
|
|
|
|
* it may help to determine terminal sequences, and see what goes on. --Zas */
|
|
|
|
/* #define DEBUG_ITRM_QUEUE */
|
|
|
|
|
|
|
|
#ifdef DEBUG_ITRM_QUEUE
|
2006-02-11 15:37:49 -05:00
|
|
|
#include <stdio.h>
|
2005-09-15 09:58:31 -04:00
|
|
|
#include <ctype.h> /* isprint() isspace() */
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Returns length of the escape sequence or -1 if the caller needs to set up
|
|
|
|
* the ESC delay timer. */
|
|
|
|
static int
|
|
|
|
decode_terminal_escape_sequence(struct itrm *itrm, struct term_event *ev)
|
|
|
|
{
|
|
|
|
struct term_event_keyboard kbd = { KBD_UNDEF, KBD_MOD_NONE };
|
|
|
|
unsigned char c;
|
|
|
|
int v;
|
|
|
|
int el;
|
|
|
|
|
|
|
|
if (itrm->in.queue.len < 3) return -1;
|
|
|
|
|
|
|
|
if (itrm->in.queue.data[2] == '[') {
|
|
|
|
if (itrm->in.queue.len >= 4
|
|
|
|
&& itrm->in.queue.data[3] >= 'A'
|
|
|
|
&& itrm->in.queue.data[3] <= 'L') {
|
|
|
|
kbd.key = KBD_F1 + itrm->in.queue.data[3] - 'A';
|
|
|
|
copy_struct(&ev->info.keyboard, &kbd);
|
|
|
|
return 4;
|
|
|
|
}
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
el = get_esc_code(itrm->in.queue.data, itrm->in.queue.len, &c, &v);
|
|
|
|
#ifdef DEBUG_ITRM_QUEUE
|
|
|
|
fprintf(stderr, "esc code: %c v=%d c=%c el=%d\n", itrm->in.queue.data[1], v, c, el);
|
|
|
|
fflush(stderr);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
case 0: return -1;
|
|
|
|
case 'A': kbd.key = KBD_UP; break;
|
|
|
|
case 'B': kbd.key = KBD_DOWN; break;
|
|
|
|
case 'C': kbd.key = KBD_RIGHT; break;
|
|
|
|
case 'D': kbd.key = KBD_LEFT; break;
|
|
|
|
case 'F':
|
|
|
|
case 'e': kbd.key = KBD_END; break;
|
|
|
|
case 'H': kbd.key = KBD_HOME; break;
|
|
|
|
case 'I': kbd.key = KBD_PAGE_UP; break;
|
|
|
|
case 'G': kbd.key = KBD_PAGE_DOWN; break;
|
2006-02-11 15:37:49 -05:00
|
|
|
/* Free BSD */
|
|
|
|
/* case 'M': kbd.key = KBD_F1; break;*/
|
|
|
|
case 'N': kbd.key = KBD_F2; break;
|
|
|
|
case 'O': kbd.key = KBD_F3; break;
|
|
|
|
case 'P': kbd.key = KBD_F4; break;
|
|
|
|
case 'Q': kbd.key = KBD_F5; break;
|
|
|
|
/* case 'R': kbd.key = KBD_F6; break;*/
|
|
|
|
case 'S': kbd.key = KBD_F7; break;
|
|
|
|
case 'T': kbd.key = KBD_F8; break;
|
|
|
|
case 'U': kbd.key = KBD_F9; break;
|
|
|
|
case 'V': kbd.key = KBD_F10; break;
|
|
|
|
case 'W': kbd.key = KBD_F11; break;
|
|
|
|
case 'X': kbd.key = KBD_F12; break;
|
2005-09-15 09:58:31 -04:00
|
|
|
|
|
|
|
case 'z': switch (v) {
|
|
|
|
case 247: kbd.key = KBD_INS; break;
|
|
|
|
case 214: kbd.key = KBD_HOME; break;
|
|
|
|
case 220: kbd.key = KBD_END; break;
|
|
|
|
case 216: kbd.key = KBD_PAGE_UP; break;
|
|
|
|
case 222: kbd.key = KBD_PAGE_DOWN; break;
|
|
|
|
case 249: kbd.key = KBD_DEL; break;
|
|
|
|
} break;
|
|
|
|
|
|
|
|
case '~': switch (v) {
|
|
|
|
case 1: kbd.key = KBD_HOME; break;
|
|
|
|
case 2: kbd.key = KBD_INS; break;
|
|
|
|
case 3: kbd.key = KBD_DEL; break;
|
|
|
|
case 4: kbd.key = KBD_END; break;
|
|
|
|
case 5: kbd.key = KBD_PAGE_UP; break;
|
|
|
|
case 6: kbd.key = KBD_PAGE_DOWN; break;
|
|
|
|
case 7: kbd.key = KBD_HOME; break;
|
|
|
|
case 8: kbd.key = KBD_END; break;
|
|
|
|
|
|
|
|
case 11: kbd.key = KBD_F1; break;
|
|
|
|
case 12: kbd.key = KBD_F2; break;
|
|
|
|
case 13: kbd.key = KBD_F3; break;
|
|
|
|
case 14: kbd.key = KBD_F4; break;
|
|
|
|
case 15: kbd.key = KBD_F5; break;
|
|
|
|
|
|
|
|
case 17: kbd.key = KBD_F6; break;
|
|
|
|
case 18: kbd.key = KBD_F7; break;
|
|
|
|
case 19: kbd.key = KBD_F8; break;
|
|
|
|
case 20: kbd.key = KBD_F9; break;
|
|
|
|
case 21: kbd.key = KBD_F10; break;
|
|
|
|
|
|
|
|
case 23: kbd.key = KBD_F11; break;
|
|
|
|
case 24: kbd.key = KBD_F12; break;
|
|
|
|
|
|
|
|
/* Give preference to F11 and F12 over shifted F1 and F2. */
|
|
|
|
/*
|
|
|
|
case 23: kbd.key = KBD_F1; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 24: kbd.key = KBD_F2; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
*/
|
|
|
|
|
|
|
|
case 25: kbd.key = KBD_F3; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 26: kbd.key = KBD_F4; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
|
|
|
|
case 28: kbd.key = KBD_F5; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 29: kbd.key = KBD_F6; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
|
|
|
|
case 31: kbd.key = KBD_F7; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 32: kbd.key = KBD_F8; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 33: kbd.key = KBD_F9; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
case 34: kbd.key = KBD_F10; kbd.modifier = KBD_MOD_SHIFT; break;
|
|
|
|
|
|
|
|
} break;
|
|
|
|
|
|
|
|
case 'R': resize_terminal(); break;
|
|
|
|
case 'M':
|
|
|
|
#ifdef CONFIG_MOUSE
|
|
|
|
el = decode_terminal_mouse_escape_sequence(itrm, ev, el, v);
|
|
|
|
#endif /* CONFIG_MOUSE */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The event might have been changed to a mouse event */
|
|
|
|
if (ev->ev == EVENT_KBD && kbd.key != KBD_UNDEF) {
|
|
|
|
copy_struct(&ev->info.keyboard, &kbd);
|
|
|
|
}
|
|
|
|
|
|
|
|
return el;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
set_kbd_event(struct term_event *ev, int key, int modifier)
|
|
|
|
{
|
|
|
|
switch (key) {
|
|
|
|
case ASCII_TAB:
|
|
|
|
key = KBD_TAB;
|
|
|
|
break;
|
2006-02-15 17:25:54 -05:00
|
|
|
#if defined(HAVE_SYS_CONSIO_H) || defined(HAVE_MACHINE_CONSOLE_H) /* BSD */
|
|
|
|
case ASCII_BS:
|
|
|
|
key = KBD_BS;
|
|
|
|
break;
|
|
|
|
case ASCII_DEL:
|
|
|
|
key = KBD_DEL;
|
|
|
|
break;
|
|
|
|
#else
|
2005-09-15 09:58:31 -04:00
|
|
|
case ASCII_BS:
|
2006-02-11 15:37:49 -05:00
|
|
|
case ASCII_DEL:
|
2006-02-12 08:19:39 -05:00
|
|
|
key = KBD_BS;
|
2006-02-11 15:37:49 -05:00
|
|
|
break;
|
2006-02-15 17:25:54 -05:00
|
|
|
#endif
|
2005-09-15 09:58:31 -04:00
|
|
|
case ASCII_LF:
|
|
|
|
case ASCII_CR:
|
|
|
|
key = KBD_ENTER;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
if (key < ' ') {
|
|
|
|
key += 'A' - 1;
|
|
|
|
modifier = KBD_MOD_CTRL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
set_kbd_term_event(ev, key, modifier);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* I feeeeeel the neeeed ... to rewrite this ... --pasky */
|
|
|
|
/* Just Do it ! --Zas */
|
2006-07-28 08:40:00 -04:00
|
|
|
/* Parse one event from itrm->in.queue and append to itrm->out.queue.
|
|
|
|
* Return the number of bytes removed from itrm->in.queue; at least 0.
|
|
|
|
* If this function leaves the queue not full, it also reenables reading
|
|
|
|
* from itrm->in.std. (Because it does not add to the queue, it never
|
2006-07-28 08:48:57 -04:00
|
|
|
* need disable reading.) On entry, the itrm must not be blocked. */
|
2005-09-15 09:58:31 -04:00
|
|
|
static int
|
|
|
|
process_queue(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
struct term_event ev;
|
|
|
|
int el = 0;
|
|
|
|
|
|
|
|
if (!itrm->in.queue.len) goto end;
|
2006-07-28 08:48:57 -04:00
|
|
|
assert(!itrm->blocked);
|
|
|
|
if_assert_failed return 0; /* unlike goto, don't enable reading */
|
2005-09-15 09:58:31 -04:00
|
|
|
|
|
|
|
set_kbd_term_event(&ev, KBD_UNDEF, KBD_MOD_NONE);
|
|
|
|
|
|
|
|
#ifdef DEBUG_ITRM_QUEUE
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Dump current queue in a readable form to stderr. */
|
|
|
|
for (i = 0; i < itrm->in.queue.len; i++)
|
|
|
|
if (itrm->in.queue.data[i] == ASCII_ESC)
|
|
|
|
fprintf(stderr, "ESC ");
|
|
|
|
else if (isprint(itrm->in.queue.data[i]) && !isspace(itrm->in.queue.data[i]))
|
|
|
|
fprintf(stderr, "%c ", itrm->in.queue.data[i]);
|
|
|
|
else
|
|
|
|
fprintf(stderr, "0x%02x ", itrm->in.queue.data[i]);
|
|
|
|
|
|
|
|
fprintf(stderr, "\n");
|
|
|
|
fflush(stderr);
|
|
|
|
}
|
|
|
|
#endif /* DEBUG_ITRM_QUEUE */
|
|
|
|
|
2006-07-28 08:40:00 -04:00
|
|
|
/* ELinks should also recognize U+009B CONTROL SEQUENCE INTRODUCER
|
|
|
|
* as meaning the same as ESC 0x5B, and U+008F SINGLE SHIFT THREE as
|
|
|
|
* meaning the same as ESC 0x4F, but those cannot yet be implemented
|
|
|
|
* because of bug 777: the UTF-8 decoder is run too late. */
|
2005-09-15 09:58:31 -04:00
|
|
|
if (itrm->in.queue.data[0] == ASCII_ESC) {
|
|
|
|
if (itrm->in.queue.len < 2) goto ret;
|
|
|
|
if (itrm->in.queue.data[1] == '[' || itrm->in.queue.data[1] == 'O') {
|
|
|
|
el = decode_terminal_escape_sequence(itrm, &ev);
|
|
|
|
|
|
|
|
if (el == -1) goto ret;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
el = 2;
|
|
|
|
|
|
|
|
if (itrm->in.queue.data[1] == ASCII_ESC) {
|
|
|
|
if (itrm->in.queue.len >= 3 &&
|
|
|
|
(itrm->in.queue.data[2] == '[' ||
|
|
|
|
itrm->in.queue.data[2] == 'O')) {
|
|
|
|
el = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_kbd_event(&ev, KBD_ESC, KBD_MOD_NONE);
|
|
|
|
|
|
|
|
} else {
|
|
|
|
set_kbd_event(&ev, itrm->in.queue.data[1], KBD_MOD_ALT);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
} else if (itrm->in.queue.data[0] == 0) {
|
|
|
|
static const struct term_event_keyboard os2xtd[256] = {
|
|
|
|
#include "terminal/key.inc"
|
|
|
|
};
|
|
|
|
|
|
|
|
if (itrm->in.queue.len < 2) goto ret;
|
|
|
|
copy_struct(&ev.info.keyboard, &os2xtd[itrm->in.queue.data[1]]);
|
|
|
|
el = 2;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
el = 1;
|
|
|
|
set_kbd_event(&ev, itrm->in.queue.data[0], 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
assertm(itrm->in.queue.len >= el, "event queue underflow");
|
|
|
|
if_assert_failed { itrm->in.queue.len = el; }
|
|
|
|
|
|
|
|
itrm->in.queue.len -= el;
|
|
|
|
|
|
|
|
/* The call to decode_terminal_escape_sequence() might have changed the
|
|
|
|
* keyboard event to a mouse event. */
|
|
|
|
if (ev.ev == EVENT_MOUSE || ev.info.keyboard.key != KBD_UNDEF)
|
|
|
|
itrm_queue_event(itrm, (char *) &ev, sizeof(ev));
|
|
|
|
|
|
|
|
if (itrm->in.queue.len)
|
|
|
|
memmove(itrm->in.queue.data, itrm->in.queue.data + el, itrm->in.queue.len);
|
|
|
|
|
|
|
|
end:
|
|
|
|
if (itrm->in.queue.len < ITRM_IN_QUEUE_SIZE)
|
|
|
|
handle_itrm_stdin(itrm);
|
|
|
|
|
|
|
|
return el;
|
|
|
|
|
|
|
|
ret:
|
|
|
|
install_timer(&itrm->timer, ESC_TIMEOUT, (void (*)(void *)) kbd_timeout,
|
|
|
|
itrm);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-07-24 12:35:58 -04:00
|
|
|
/* A select_handler_T read_func for itrm->in.std. This is called when
|
|
|
|
* characters typed by the user arrive from the terminal. */
|
2005-09-15 09:58:31 -04:00
|
|
|
static void
|
|
|
|
in_kbd(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (!can_read(itrm->in.std)) return;
|
|
|
|
|
|
|
|
kill_timer(&itrm->timer);
|
|
|
|
|
|
|
|
if (itrm->in.queue.len >= ITRM_IN_QUEUE_SIZE) {
|
|
|
|
unhandle_itrm_stdin(itrm);
|
|
|
|
while (process_queue(itrm));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
r = safe_read(itrm->in.std, itrm->in.queue.data + itrm->in.queue.len,
|
|
|
|
ITRM_IN_QUEUE_SIZE - itrm->in.queue.len);
|
|
|
|
if (r <= 0) {
|
|
|
|
free_itrm(itrm);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
itrm->in.queue.len += r;
|
|
|
|
if (itrm->in.queue.len > ITRM_IN_QUEUE_SIZE) {
|
|
|
|
ERROR(gettext("Too many bytes read from the itrm!"));
|
|
|
|
itrm->in.queue.len = ITRM_IN_QUEUE_SIZE;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (process_queue(itrm));
|
|
|
|
}
|
|
|
|
|
2006-07-28 08:40:00 -04:00
|
|
|
/* Enable reading from itrm->in.std. ELinks will read any available
|
|
|
|
* bytes from the tty into itrm->in.queue and then parse them.
|
|
|
|
* Reading should be enabled whenever itrm->in.queue is not full and
|
|
|
|
* itrm->blocked is 0. */
|
2005-09-15 09:58:31 -04:00
|
|
|
static void
|
|
|
|
handle_itrm_stdin(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
set_handlers(itrm->in.std, (select_handler_T) in_kbd, NULL,
|
|
|
|
(select_handler_T) free_itrm, itrm);
|
|
|
|
}
|
|
|
|
|
2006-07-28 08:40:00 -04:00
|
|
|
/* Disable reading from itrm->in.std. Reading should be disabled
|
|
|
|
* whenever itrm->in.queue is full (there is no room for the data)
|
|
|
|
* or itrm->blocked is 1 (other processes may read the data). */
|
2005-09-15 09:58:31 -04:00
|
|
|
static void
|
|
|
|
unhandle_itrm_stdin(struct itrm *itrm)
|
|
|
|
{
|
|
|
|
set_handlers(itrm->in.std, (select_handler_T) NULL, NULL,
|
|
|
|
(select_handler_T) free_itrm, itrm);
|
|
|
|
}
|