/* $OpenBSD: cmd-paste-buffer.c,v 1.45 2026/10/09 13:12:14 nicm Exp $ */

/*

 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER

 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING

 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#include <sys/types.h>

#include <stdlib.h>

#include <string.h>

#include "tmux.h"

/*

 * Paste paste buffer if present.

 */

static enum cmd_retval  cmd_paste_buffer_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_paste_buffer_entry = {

  .name = "paste-buffer",

  .description = "Paste a buffer into a pane.",

  .alias = "pasteb",

  .args = { "db:prSs:t:", 0, 0, NULL },

  .usage = "[-dprS] [-s separator] " CMD_BUFFER_USAGE " "

     CMD_TARGET_PANE_USAGE,

  .target = { 't', CMD_FIND_PANE, 0 },

  .flags = CMD_AFTERHOOK,

  .exec = cmd_paste_buffer_exec

};

static void

cmd_paste_buffer_paste(struct window_pane *wp, const char *buf, size_t len)

{

  char  *cp;

  size_t   n;

  n = utf8_stravisx(&cp, buf, len, VIS_SAFE|VIS_NOSLASH);

  bufferevent_write(wp->event, cp, n);

  free(cp);

}

static enum cmd_retval

cmd_paste_buffer_exec(struct cmd *self, struct cmdq_item *item)

{

  struct args   *args = cmd_get_args(self);

  struct cmd_find_state *target = cmdq_get_target(item);

  struct window_pane  *wp = target->wp;

  struct paste_buffer *pb;

  const char    *sepstr, *bufname, *bufdata, *bufend, *line;

  size_t       seplen, bufsize, len;

  int      bracket = args_has(args, 'p');

  if (window_pane_exited(wp)) {

    cmdq_error(item, "target pane has exited");

    return (CMD_RETURN_ERROR);

  }

  bufname = NULL;

  if (args_has(args, 'b'))

    bufname = args_get(args, 'b');

  if (bufname == NULL)

    pb = paste_get_top(NULL);

  else {

    pb = paste_get_name(bufname);

    if (pb == NULL) {

      cmdq_error(item, "no buffer %s", bufname);

      return (CMD_RETURN_ERROR);

    }

  }

  if (pb != NULL && ~wp->flags & PANE_INPUTOFF) {

    sepstr = args_get(args, 's');

    if (sepstr == NULL) {

      if (args_has(args, 'r'))

        sepstr = "\n";

      else

        sepstr = "\r";

    }

    seplen = strlen(sepstr);

    if (bracket && (wp->screen->mode & MODE_BRACKETPASTE))

      bufferevent_write(wp->event, "\033[200~", 6);

    bufdata = paste_buffer_data(pb, &bufsize);

    bufend = bufdata + bufsize;

    for (;;) {

      line = memchr(bufdata, '\n', bufend - bufdata);

      if (line == NULL)

        break;

      len = line - bufdata;

      if (args_has(args, 'S'))

        bufferevent_write(wp->event, bufdata, len);

      else

        cmd_paste_buffer_paste(wp, bufdata, len);

      bufferevent_write(wp->event, sepstr, seplen);

      bufdata = line + 1;

    }

    if (bufdata != bufend) {

      len = bufend - bufdata;

      if (args_has(args, 'S'))

        bufferevent_write(wp->event, bufdata, len);

      else

        cmd_paste_buffer_paste(wp, bufdata, len);

    }

    if (bracket && (wp->screen->mode & MODE_BRACKETPASTE))

      bufferevent_write(wp->event, "\033[201~", 6);

  }

  if (pb != NULL && args_has(args, 'd'))

    paste_free(pb);

  return (CMD_RETURN_NORMAL);

}