cmd-show-buffer.c

   1 /* $OpenBSD$ */
   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 <vis.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_free,
  39         cmd_buffer_print
  40 };
  41
  42 int
  43 cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
  44 {
  45         struct cmd_buffer_data  *data = self->data;
  46         struct session          *s;
  47         struct paste_buffer     *pb;
  48         char                    *in, *buf, *ptr;
  49         size_t                   size, len;
  50         u_int                    width;
  51
  52         if ((s = cmd_find_session(ctx, data->target)) == NULL)
  53                 return (-1);
  54
  55         if (data->buffer == -1) {
  56                 if ((pb = paste_get_top(&s->buffers)) == NULL) {
  57                         ctx->error(ctx, "no buffers");
  58                         return (-1);
  59                 }
  60         } else if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
  61                 ctx->error(ctx, "no buffer %d", data->buffer);
  62                 return (-1);
  63         }
  64         if (pb == NULL)
  65                 return (0);
  66
  67         size = pb->size;
  68         if (size > SIZE_MAX / 4 - 1)
  69                 size = SIZE_MAX / 4 - 1;
  70         in = xmalloc(size * 4 + 1);
  71         strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
  72
  73         width = s->sx;
  74         if (ctx->cmdclient != NULL)
  75                 width = ctx->cmdclient->tty.sx;
  76
  77         buf = xmalloc(width + 1);
  78         len = 0;
  79
  80         ptr = in;
  81         do {
  82                 buf[len++] = *ptr++;
  83
  84                 if (len == width || buf[len - 1] == '\n') {
  85                         if (buf[len - 1] == '\n')
  86                                 len--;
  87                         buf[len] = '\0';
  88
  89                         ctx->print(ctx, "%s", buf);
  90                         len = 0;
  91                 }
  92         } while (*ptr != '\0');
  93
  94         if (len != 0) {
  95                 buf[len] = '\0';
  96                 ctx->print(ctx, "%s", buf);
  97         }
  98         xfree(buf);
  99
 100         xfree(in);
 101
 102         return (0);
 103 }