cmd-show-buffer.c

   1 /* $Id: cmd-show-buffer.c,v 1.4 2009-01-19 18:23:40 nicm Exp $ */
   2
   3 /*
   4  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <stdlib.h>
  22
  23 #include "tmux.h"
  24
  25 /*
  26  * Show a session paste buffer.
  27  */
  28
  29 int     cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
  30
  31 const struct cmd_entry cmd_show_buffer_entry = {
  32         "show-buffer", "showb",
  33         CMD_BUFFER_SESSION_USAGE,
  34         0,
  35         cmd_buffer_init,
  36         cmd_buffer_parse,
  37         cmd_show_buffer_exec,
  38         cmd_buffer_send,
  39         cmd_buffer_recv,
  40         cmd_buffer_free,
  41         cmd_buffer_print
  42 };
  43
  44 int
  45 cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
  46 {
  47         struct cmd_buffer_data  *data = self->data;
  48         struct session          *s;
  49         struct paste_buffer     *pb;
  50         u_int                    size;
  51         char                    *buf, *ptr;
  52         size_t                   len;
  53
  54         if ((s = cmd_find_session(ctx, data->target)) == NULL)
  55                 return (-1);
  56
  57         if (data->buffer == -1) {
  58                 if ((pb = paste_get_top(&s->buffers)) == NULL) {
  59                         ctx->error(ctx, "no buffers");
  60                         return (-1);
  61                 }
  62         } else if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
  63                 ctx->error(ctx, "no buffer %d", data->buffer);
  64                 return (-1);
  65         }
  66
  67         if (pb != NULL) {
  68                 size = s->sx;
  69
  70                 buf = xmalloc(size + 1);
  71                 len = 0;
  72
  73                 ptr = pb->data;
  74                 do {
  75                         buf[len++] = *ptr++;
  76
  77                         if (len == size) {
  78                                 buf[len] = '\0';
  79                                 ctx->print(ctx, buf);
  80
  81                                 len = 0;
  82                         }
  83                 } while (*ptr != '\0');
  84                 buf[len] = '\0';
  85                 ctx->print(ctx, buf);
  86         }
  87
  88         return (0);
  89 }