/* $OpenBSD$ */

/*
* Copyright (c) 2007 Nicholas Marriott <[email protected]>
*
* 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",
       .alias = "pasteb",

       .args = { "db:prs:t:", 0, 0, NULL },
       .usage = "[-dpr] [-s separator] " CMD_BUFFER_USAGE " "
                CMD_TARGET_PANE_USAGE,

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

       .flags = CMD_AFTERHOOK,
       .exec = cmd_paste_buffer_exec
};

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;
       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;

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

                       bufdata = line + 1;
               }
               if (bufdata != bufend)
                       bufferevent_write(wp->event, bufdata, bufend - bufdata);

               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);
}