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852 lines
20 KiB
C
852 lines
20 KiB
C
/* $Id: status.c,v 1.73 2009-02-11 17:50:36 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "tmux.h"
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char *status_replace(struct session *, char *, time_t);
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char *status_replace_popen(char **);
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size_t status_width(struct winlink *);
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char *status_print(struct session *, struct winlink *, struct grid_cell *);
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void status_prompt_add_history(struct client *);
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char *status_prompt_complete(const char *);
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/* Draw status for client on the last lines of given context. */
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int
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status_redraw(struct client *c)
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{
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struct screen_write_ctx ctx;
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struct session *s = c->session;
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struct winlink *wl;
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struct window_pane *wp;
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struct screen *sc = NULL, old_status;
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char *left, *right, *text, *ptr;
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size_t llen, rlen, offset, xx, yy, sy;
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size_t size, start, width;
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struct grid_cell stdgc, gc;
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int larrow, rarrow;
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left = right = NULL;
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/* Create the target screen. */
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memcpy(&old_status, &c->status, sizeof old_status);
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screen_init(&c->status, c->tty.sx, 1, 0);
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/* No status line? */
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if (c->tty.sy == 0 || !options_get_number(&s->options, "status"))
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goto off;
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larrow = rarrow = 0;
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if (gettimeofday(&c->status_timer, NULL) != 0)
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fatal("gettimeofday");
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memcpy(&stdgc, &grid_default_cell, sizeof gc);
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stdgc.bg = options_get_number(&s->options, "status-fg");
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stdgc.fg = options_get_number(&s->options, "status-bg");
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stdgc.attr |= options_get_number(&s->options, "status-attr");
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yy = c->tty.sy - 1;
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if (yy == 0)
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goto blank;
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/* Work out the left and right strings. */
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left = status_replace(s, options_get_string(
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&s->options, "status-left"), c->status_timer.tv_sec);
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llen = options_get_number(&s->options, "status-left-length");
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if (strlen(left) < llen)
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llen = strlen(left);
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left[llen] = '\0';
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right = status_replace(s, options_get_string(
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&s->options, "status-right"), c->status_timer.tv_sec);
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rlen = options_get_number(&s->options, "status-right-length");
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if (strlen(right) < rlen)
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rlen = strlen(right);
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right[rlen] = '\0';
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/*
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* Figure out how much space we have for the window list. If there isn't
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* enough space, just wimp out.
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*/
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xx = 0;
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if (llen != 0)
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xx += llen + 1;
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if (rlen != 0)
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xx += rlen + 1;
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if (c->tty.sx == 0 || c->tty.sx <= xx)
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goto blank;
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xx = c->tty.sx - xx;
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/*
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* Right. We have xx characters to fill. Find out how much is to go in
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* them and the offset of the current window (it must be on screen).
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*/
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width = offset = 0;
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RB_FOREACH(wl, winlinks, &s->windows) {
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size = status_width(wl) + 1;
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if (wl == s->curw)
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offset = width;
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width += size;
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}
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start = 0;
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/* If there is enough space for the total width, all is gravy. */
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if (width <= xx)
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goto draw;
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/* Find size of current window text. */
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size = status_width(s->curw);
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/*
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* If the offset is already on screen, we're good to draw from the
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* start and just leave off the end.
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*/
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if (offset + size < xx) {
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if (xx > 0) {
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rarrow = 1;
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xx--;
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}
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width = xx;
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goto draw;
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}
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/*
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* Work out how many characters we need to omit from the start. There
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* are xx characters to fill, and offset + size must be the last. So,
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* the start character is offset + size - xx.
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*/
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if (xx > 0) {
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larrow = 1;
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xx--;
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}
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start = offset + size - xx;
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if (xx > 0 && width > start + xx + 1) { /* + 1, eh? */
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rarrow = 1;
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start++;
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xx--;
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}
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width = xx;
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draw:
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/* Bail here if anything is too small too. XXX. */
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if (width == 0 || xx == 0)
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goto blank;
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/* Begin drawing and move to the starting position. */
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screen_write_start(&ctx, NULL, &c->status);
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if (llen != 0) {
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screen_write_cursormove(&ctx, 0, yy);
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screen_write_puts(&ctx, &stdgc, "%s ", left);
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if (larrow)
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screen_write_putc(&ctx, &stdgc, ' ');
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} else {
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if (larrow)
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screen_write_cursormove(&ctx, 1, yy);
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else
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screen_write_cursormove(&ctx, 0, yy);
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}
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/* Draw each character in succession. */
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offset = 0;
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RB_FOREACH(wl, winlinks, &s->windows) {
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memcpy(&gc, &stdgc, sizeof gc);
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text = status_print(s, wl, &gc);
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if (larrow == 1 && offset < start) {
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if (session_alert_has(s, wl, WINDOW_ACTIVITY))
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larrow = -1;
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if (session_alert_has(s, wl, WINDOW_BELL))
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larrow = -1;
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}
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for (ptr = text; *ptr != '\0'; ptr++) {
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if (offset >= start && offset < start + width)
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screen_write_putc(&ctx, &gc, *ptr);
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offset++;
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}
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if (rarrow == 1 && offset > start + width) {
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if (session_alert_has(s, wl, WINDOW_ACTIVITY))
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rarrow = -1;
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if (session_alert_has(s, wl, WINDOW_BELL))
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rarrow = -1;
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}
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if (offset < start + width) {
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if (offset >= start) {
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screen_write_putc(&ctx, &stdgc, ' ');
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}
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offset++;
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}
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xfree(text);
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}
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/* Fill the remaining space if any. */
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while (offset++ < xx)
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screen_write_putc(&ctx, &stdgc, ' ');
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/* Draw the last item. */
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if (rlen != 0) {
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screen_write_cursormove(&ctx, c->tty.sx - rlen - 1, yy);
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screen_write_puts(&ctx, &stdgc, " %s", right);
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}
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/* Draw the arrows. */
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if (larrow != 0) {
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memcpy(&gc, &stdgc, sizeof gc);
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if (larrow == -1)
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gc.attr ^= GRID_ATTR_REVERSE;
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if (llen != 0)
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screen_write_cursormove(&ctx, llen + 1, yy);
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else
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screen_write_cursormove(&ctx, 0, yy);
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screen_write_putc(&ctx, &gc, '<');
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}
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if (rarrow != 0) {
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memcpy(&gc, &stdgc, sizeof gc);
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if (rarrow == -1)
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gc.attr ^= GRID_ATTR_REVERSE;
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if (rlen != 0)
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screen_write_cursormove(&ctx, c->tty.sx - rlen - 2, yy);
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else
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screen_write_cursormove(&ctx, c->tty.sx - 1, yy);
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screen_write_putc(&ctx, &gc, '>');
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}
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goto out;
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blank:
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/* Just draw the whole line as blank. */
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screen_write_start(&ctx, NULL, &c->status);
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screen_write_cursormove(&ctx, 0, yy);
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for (offset = 0; offset < c->tty.sx; offset++)
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screen_write_putc(&ctx, &stdgc, ' ');
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goto out;
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off:
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/*
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* Draw the real window last line. Necessary to wipe over message if
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* status is off. Not sure this is the right place for this.
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*/
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memcpy(&stdgc, &grid_default_cell, sizeof stdgc);
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screen_write_start(&ctx, NULL, &c->status);
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sy = 0;
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TAILQ_FOREACH(wp, &s->curw->window->panes, entry) {
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sy += wp->sy + 1;
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sc = wp->screen;
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}
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screen_write_cursormove(&ctx, 0, 0);
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if (sy < c->tty.sy) {
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/* If the screen is too small, use blank. */
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for (offset = 0; offset < c->tty.sx; offset++)
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screen_write_putc(&ctx, &stdgc, ' ');
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} else {
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screen_write_copy(&ctx,
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sc, 0, sc->grid->hsize + screen_size_y(sc) - 1, c->tty.sx, 1);
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}
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out:
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screen_write_stop(&ctx);
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if (left != NULL)
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xfree(left);
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if (right != NULL)
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xfree(right);
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if (grid_compare(c->status.grid, old_status.grid) == 0) {
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screen_free(&old_status);
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return (0);
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}
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screen_free(&old_status);
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return (1);
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}
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char *
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status_replace(struct session *s, char *fmt, time_t t)
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{
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struct winlink *wl = s->curw;
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static char out[BUFSIZ];
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char in[BUFSIZ], tmp[256], ch, *iptr, *optr, *ptr, *endptr;
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char *savedptr;
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size_t len;
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long n;
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strftime(in, sizeof in, fmt, localtime(&t));
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in[(sizeof in) - 1] = '\0';
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iptr = in;
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optr = out;
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savedptr = NULL;
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while (*iptr != '\0') {
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if (optr >= out + (sizeof out) - 1)
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break;
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switch (ch = *iptr++) {
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case '#':
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errno = 0;
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n = strtol(iptr, &endptr, 10);
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if ((n == 0 && errno != EINVAL) ||
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(n == LONG_MIN && errno != ERANGE) ||
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(n == LONG_MAX && errno != ERANGE) ||
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n != 0)
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iptr = endptr;
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if (n <= 0)
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n = LONG_MAX;
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ptr = NULL;
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switch (*iptr++) {
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case '(':
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if (ptr == NULL) {
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ptr = status_replace_popen(&iptr);
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if (ptr == NULL)
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break;
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savedptr = ptr;
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}
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/* FALLTHROUGH */
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case 'H':
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if (ptr == NULL) {
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if (gethostname(tmp, sizeof tmp) != 0)
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fatal("gethostname");
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ptr = tmp;
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}
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/* FALLTHROUGH */
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case 'S':
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if (ptr == NULL)
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ptr = s->name;
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/* FALLTHROUGH */
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case 'T':
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if (ptr == NULL)
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ptr = wl->window->active->base.title;
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len = strlen(ptr);
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if ((size_t) n < len)
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len = n;
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if (optr + len >= out + (sizeof out) - 1)
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break;
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while (len > 0 && *ptr != '\0') {
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*optr++ = *ptr++;
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len--;
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}
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break;
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case '#':
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*optr++ = '#';
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break;
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}
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if (savedptr != NULL) {
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xfree(savedptr);
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savedptr = NULL;
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}
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break;
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default:
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*optr++ = ch;
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break;
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}
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}
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*optr = '\0';
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return (xstrdup(out));
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}
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char *
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status_replace_popen(char **iptr)
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{
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FILE *f;
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char *buf, *cmd, *ptr;
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int lastesc;
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size_t len;
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if (**iptr == '\0')
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return (NULL);
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if (**iptr == ')') { /* no command given */
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(*iptr)++;
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return (NULL);
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}
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buf = NULL;
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cmd = xmalloc(strlen(*iptr) + 1);
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len = 0;
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lastesc = 0;
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for (; **iptr != '\0'; (*iptr)++) {
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if (!lastesc && **iptr == ')')
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break; /* unescaped ) is the end */
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if (!lastesc && **iptr == '\\') {
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lastesc = 1;
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continue; /* skip \ if not escaped */
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}
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lastesc = 0;
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cmd[len++] = **iptr;
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}
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if (**iptr == '\0') /* no terminating ) */
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goto out;
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(*iptr)++; /* skip final ) */
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cmd[len] = '\0';
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if ((f = popen(cmd, "r")) == NULL)
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goto out;
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if ((buf = fgetln(f, &len)) == NULL) {
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pclose(f);
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goto out;
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}
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if (buf[len - 1] == '\n') {
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buf[len - 1] = '\0';
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buf = xstrdup(buf);
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} else {
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ptr = xmalloc(len + 1);
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memcpy(ptr, buf, len);
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ptr[len] = '\0';
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buf = ptr;
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}
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pclose(f);
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out:
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xfree(cmd);
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return (buf);
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}
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size_t
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status_width(struct winlink *wl)
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{
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#ifndef BROKEN_VSNPRINTF
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return (xsnprintf(NULL, 0, "%d:%s ", wl->idx, wl->window->name));
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#else
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char *s;
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size_t n;
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xasprintf(&s, "%d:%s ", wl->idx, wl->window->name);
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n = strlen(s);
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xfree(s);
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return (n);
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#endif
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}
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char *
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status_print(struct session *s, struct winlink *wl, struct grid_cell *gc)
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{
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char *text, flag;
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u_char fg, bg, attr;
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fg = options_get_number(&wl->window->options, "window-status-fg");
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if (fg != 8)
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gc->fg = fg;
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bg = options_get_number(&wl->window->options, "window-status-bg");
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if (bg != 8)
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gc->bg = bg;
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attr = options_get_number(&wl->window->options, "window-status-attr");
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if (attr != 0)
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gc->attr = attr;
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flag = ' ';
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if (wl == SLIST_FIRST(&s->lastw))
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flag = '-';
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if (wl == s->curw)
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flag = '*';
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if (session_alert_has(s, wl, WINDOW_ACTIVITY)) {
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flag = '#';
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gc->attr ^= GRID_ATTR_REVERSE;
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}
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if (session_alert_has(s, wl, WINDOW_BELL)) {
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flag = '!';
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gc->attr ^= GRID_ATTR_REVERSE;
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}
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xasprintf(&text, "%d:%s%c", wl->idx, wl->window->name, flag);
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return (text);
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}
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/* Draw client message on status line of present else on last line. */
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int
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status_message_redraw(struct client *c)
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{
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struct screen_write_ctx ctx;
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struct session *s = c->session;
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struct screen old_status;
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size_t len;
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struct grid_cell gc;
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if (c->tty.sx == 0 || c->tty.sy == 0)
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return (0);
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memcpy(&old_status, &c->status, sizeof old_status);
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screen_init(&c->status, c->tty.sx, 1, 0);
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len = strlen(c->message_string);
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if (len > c->tty.sx)
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len = c->tty.sx;
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memcpy(&gc, &grid_default_cell, sizeof gc);
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gc.bg = options_get_number(&s->options, "message-fg");
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gc.fg = options_get_number(&s->options, "message-bg");
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gc.attr |= options_get_number(&s->options, "message-attr");
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screen_write_start(&ctx, NULL, &c->status);
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screen_write_cursormove(&ctx, 0, 0);
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screen_write_puts(&ctx, &gc, "%.*s", (int) len, c->message_string);
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for (; len < c->tty.sx; len++)
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screen_write_putc(&ctx, &gc, ' ');
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screen_write_stop(&ctx);
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if (grid_compare(c->status.grid, old_status.grid) == 0) {
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screen_free(&old_status);
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return (0);
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}
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screen_free(&old_status);
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return (1);
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}
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/* Draw client prompt on status line of present else on last line. */
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int
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status_prompt_redraw(struct client *c)
|
|
{
|
|
struct screen_write_ctx ctx;
|
|
struct session *s = c->session;
|
|
struct screen old_status;
|
|
size_t i, size, left, len, offset, n;
|
|
char ch;
|
|
struct grid_cell gc;
|
|
|
|
if (c->tty.sx == 0 || c->tty.sy == 0)
|
|
return (0);
|
|
memcpy(&old_status, &c->status, sizeof old_status);
|
|
screen_init(&c->status, c->tty.sx, 1, 0);
|
|
offset = 0;
|
|
|
|
len = strlen(c->prompt_string);
|
|
if (len > c->tty.sx)
|
|
len = c->tty.sx;
|
|
|
|
memcpy(&gc, &grid_default_cell, sizeof gc);
|
|
gc.bg = options_get_number(&s->options, "message-fg");
|
|
gc.fg = options_get_number(&s->options, "message-bg");
|
|
gc.attr |= options_get_number(&s->options, "message-attr");
|
|
|
|
screen_write_start(&ctx, NULL, &c->status);
|
|
|
|
screen_write_cursormove(&ctx, 0, 0);
|
|
screen_write_puts(&ctx, &gc, "%.*s", (int) len, c->prompt_string);
|
|
|
|
left = c->tty.sx - len;
|
|
if (left != 0) {
|
|
if (c->prompt_index < left)
|
|
size = strlen(c->prompt_buffer);
|
|
else {
|
|
offset = c->prompt_index - left - 1;
|
|
if (c->prompt_index == strlen(c->prompt_buffer))
|
|
left--;
|
|
size = left;
|
|
}
|
|
if (c->prompt_hidden) {
|
|
n = strlen(c->prompt_buffer);
|
|
if (n > left)
|
|
n = left;
|
|
for (i = 0; i < n; i++)
|
|
screen_write_putc(&ctx, &gc, '*');
|
|
} else {
|
|
screen_write_puts(&ctx, &gc,
|
|
"%.*s", (int) left, c->prompt_buffer + offset);
|
|
}
|
|
|
|
for (i = len + size; i < c->tty.sx; i++)
|
|
screen_write_putc(&ctx, &gc, ' ');
|
|
}
|
|
|
|
/* Draw a fake cursor. */
|
|
screen_write_cursormove(&ctx, len + c->prompt_index - offset, 0);
|
|
if (c->prompt_index == strlen(c->prompt_buffer))
|
|
ch = ' ';
|
|
else
|
|
ch = c->prompt_buffer[c->prompt_index];
|
|
if (ch == '\0')
|
|
ch = ' ';
|
|
gc.attr ^= GRID_ATTR_REVERSE;
|
|
screen_write_putc(&ctx, &gc, ch);
|
|
|
|
screen_write_stop(&ctx);
|
|
|
|
if (grid_compare(c->status.grid, old_status.grid) == 0) {
|
|
screen_free(&old_status);
|
|
return (0);
|
|
}
|
|
screen_free(&old_status);
|
|
return (1);
|
|
}
|
|
|
|
/* Handle keys in prompt. */
|
|
void
|
|
status_prompt_key(struct client *c, int key)
|
|
{
|
|
char *s, *first, *last;
|
|
size_t size, n, off, idx;
|
|
char word[64];
|
|
|
|
/* XXX This function needs some tidying... */
|
|
|
|
size = strlen(c->prompt_buffer);
|
|
switch (key) {
|
|
case KEYC_LEFT:
|
|
if (c->prompt_index > 0) {
|
|
c->prompt_index--;
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case KEYC_RIGHT:
|
|
if (c->prompt_index < size) {
|
|
c->prompt_index++;
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case '\001': /* C-a */
|
|
if (c->prompt_index != 0) {
|
|
c->prompt_index = 0;
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case '\005': /* C-e */
|
|
if (c->prompt_index != size) {
|
|
c->prompt_index = size;
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case '\011':
|
|
if (*c->prompt_buffer == '\0')
|
|
break;
|
|
|
|
idx = c->prompt_index;
|
|
if (idx != 0)
|
|
idx--;
|
|
|
|
/* Find the word we are in. */
|
|
first = c->prompt_buffer + idx;
|
|
while (first > c->prompt_buffer && *first != ' ')
|
|
first--;
|
|
while (*first == ' ')
|
|
first++;
|
|
last = c->prompt_buffer + idx;
|
|
while (*last != '\0' && *last != ' ')
|
|
last++;
|
|
while (*last == ' ')
|
|
last--;
|
|
if (*last != '\0')
|
|
last++;
|
|
if (last <= first ||
|
|
((size_t) (last - first)) > (sizeof word) - 1)
|
|
break;
|
|
memcpy(word, first, last - first);
|
|
word[last - first] = '\0';
|
|
|
|
/* And try to complete it. */
|
|
if ((s = status_prompt_complete(word)) == NULL)
|
|
break;
|
|
|
|
/* Trim out word. */
|
|
n = size - (last - c->prompt_buffer) + 1; /* with \0 */
|
|
memmove(first, last, n);
|
|
size -= last - first;
|
|
|
|
/* Insert the new word. */
|
|
size += strlen(s);
|
|
off = first - c->prompt_buffer;
|
|
c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 1);
|
|
first = c->prompt_buffer + off;
|
|
memmove(first + strlen(s), first, n);
|
|
memcpy(first, s, strlen(s));
|
|
|
|
c->prompt_index = (first - c->prompt_buffer) + strlen(s);
|
|
|
|
c->flags |= CLIENT_STATUS;
|
|
break;
|
|
case '\010':
|
|
case '\177':
|
|
if (c->prompt_index != 0) {
|
|
if (c->prompt_index == size)
|
|
c->prompt_buffer[--c->prompt_index] = '\0';
|
|
else {
|
|
memmove(c->prompt_buffer + c->prompt_index - 1,
|
|
c->prompt_buffer + c->prompt_index,
|
|
size + 1 - c->prompt_index);
|
|
c->prompt_index--;
|
|
}
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case KEYC_DC:
|
|
if (c->prompt_index != size) {
|
|
memmove(c->prompt_buffer + c->prompt_index,
|
|
c->prompt_buffer + c->prompt_index + 1,
|
|
size + 1 - c->prompt_index);
|
|
c->flags |= CLIENT_STATUS;
|
|
}
|
|
break;
|
|
case KEYC_UP:
|
|
if (ARRAY_LENGTH(&c->prompt_hdata) == 0)
|
|
break;
|
|
xfree(c->prompt_buffer);
|
|
|
|
c->prompt_buffer = xstrdup(ARRAY_ITEM(&c->prompt_hdata,
|
|
ARRAY_LENGTH(&c->prompt_hdata) - 1 - c->prompt_hindex));
|
|
if (c->prompt_hindex != ARRAY_LENGTH(&c->prompt_hdata) - 1)
|
|
c->prompt_hindex++;
|
|
|
|
c->prompt_index = strlen(c->prompt_buffer);
|
|
c->flags |= CLIENT_STATUS;
|
|
break;
|
|
case KEYC_DOWN:
|
|
xfree(c->prompt_buffer);
|
|
|
|
if (c->prompt_hindex != 0) {
|
|
c->prompt_hindex--;
|
|
c->prompt_buffer = xstrdup(ARRAY_ITEM(
|
|
&c->prompt_hdata, ARRAY_LENGTH(
|
|
&c->prompt_hdata) - 1 - c->prompt_hindex));
|
|
} else
|
|
c->prompt_buffer = xstrdup("");
|
|
|
|
c->prompt_index = strlen(c->prompt_buffer);
|
|
c->flags |= CLIENT_STATUS;
|
|
break;
|
|
case '\r': /* enter */
|
|
if (*c->prompt_buffer != '\0') {
|
|
status_prompt_add_history(c);
|
|
if (c->prompt_callback(
|
|
c->prompt_data, c->prompt_buffer) == 0)
|
|
server_clear_client_prompt(c);
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case '\033': /* escape */
|
|
if (c->prompt_callback(c->prompt_data, NULL) == 0)
|
|
server_clear_client_prompt(c);
|
|
break;
|
|
default:
|
|
if (key < 32)
|
|
break;
|
|
c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 2);
|
|
|
|
if (c->prompt_index == size) {
|
|
c->prompt_buffer[c->prompt_index++] = key;
|
|
c->prompt_buffer[c->prompt_index] = '\0';
|
|
} else {
|
|
memmove(c->prompt_buffer + c->prompt_index + 1,
|
|
c->prompt_buffer + c->prompt_index,
|
|
size + 1 - c->prompt_index);
|
|
c->prompt_buffer[c->prompt_index++] = key;
|
|
}
|
|
|
|
c->flags |= CLIENT_STATUS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Add line to the history. */
|
|
void
|
|
status_prompt_add_history(struct client *c)
|
|
{
|
|
if (ARRAY_LENGTH(&c->prompt_hdata) > 0 &&
|
|
strcmp(ARRAY_LAST(&c->prompt_hdata), c->prompt_buffer) == 0)
|
|
return;
|
|
|
|
if (ARRAY_LENGTH(&c->prompt_hdata) == PROMPT_HISTORY) {
|
|
xfree(ARRAY_FIRST(&c->prompt_hdata));
|
|
ARRAY_REMOVE(&c->prompt_hdata, 0);
|
|
}
|
|
|
|
ARRAY_ADD(&c->prompt_hdata, xstrdup(c->prompt_buffer));
|
|
}
|
|
|
|
/* Complete word. */
|
|
char *
|
|
status_prompt_complete(const char *s)
|
|
{
|
|
const struct cmd_entry **cmdent;
|
|
const struct set_option_entry *optent;
|
|
ARRAY_DECL(, const char *) list;
|
|
char *prefix, *s2;
|
|
u_int i;
|
|
size_t j;
|
|
|
|
if (*s == '\0')
|
|
return (NULL);
|
|
|
|
/* First, build a list of all the possible matches. */
|
|
ARRAY_INIT(&list);
|
|
for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
|
|
if (strncmp((*cmdent)->name, s, strlen(s)) == 0)
|
|
ARRAY_ADD(&list, (*cmdent)->name);
|
|
}
|
|
for (i = 0; i < NSETOPTION; i++) {
|
|
optent = &set_option_table[i];
|
|
if (strncmp(optent->name, s, strlen(s)) == 0)
|
|
ARRAY_ADD(&list, optent->name);
|
|
}
|
|
for (i = 0; i < NSETWINDOWOPTION; i++) {
|
|
optent = &set_window_option_table[i];
|
|
if (strncmp(optent->name, s, strlen(s)) == 0)
|
|
ARRAY_ADD(&list, optent->name);
|
|
}
|
|
|
|
/* If none, bail now. */
|
|
if (ARRAY_LENGTH(&list) == 0) {
|
|
ARRAY_FREE(&list);
|
|
return (NULL);
|
|
}
|
|
|
|
/* If an exact match, return it, with a trailing space. */
|
|
if (ARRAY_LENGTH(&list) == 1) {
|
|
xasprintf(&s2, "%s ", ARRAY_FIRST(&list));
|
|
ARRAY_FREE(&list);
|
|
return (s2);
|
|
}
|
|
|
|
/* Now loop through the list and find the longest common prefix. */
|
|
prefix = xstrdup(ARRAY_FIRST(&list));
|
|
for (i = 1; i < ARRAY_LENGTH(&list); i++) {
|
|
s = ARRAY_ITEM(&list, i);
|
|
|
|
j = strlen(s);
|
|
if (j > strlen(prefix))
|
|
j = strlen(prefix);
|
|
for (; j > 0; j--) {
|
|
if (prefix[j - 1] != s[j - 1])
|
|
prefix[j - 1] = '\0';
|
|
}
|
|
}
|
|
|
|
ARRAY_FREE(&list);
|
|
return (prefix);
|
|
}
|