cmd-capture-pane.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Jonathan Alvarado <radobobo@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 #include <string.h>
  23
  24 #include "tmux.h"
  25
  26 /*
  27  * Write the entire contents of a pane to a buffer.
  28  */
  29
  30 int     cmd_capture_pane_exec(struct cmd *, struct cmd_ctx *);
  31
  32 const struct cmd_entry cmd_capture_pane_entry = {
  33         "capture-pane", "capturep",
  34         "b:E:S:t:", 0, 0,
  35         "[-b buffer-index] [-E end-line] [-S start-line] [-t target-pane]",
  36         0,
  37         NULL,
  38         NULL,
  39         cmd_capture_pane_exec
  40 };
  41
  42 int
  43 cmd_capture_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
  44 {
  45         struct args             *args = self->args;
  46         struct window_pane      *wp;
  47         char                    *buf, *line, *cause;
  48         struct screen           *s;
  49         struct grid             *gd;
  50         int                      buffer, n;
  51         u_int                    i, limit, top, bottom, tmp;
  52         size_t                   len, linelen;
  53
  54         if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
  55                 return (-1);
  56         s = &wp->base;
  57         gd = s->grid;
  58
  59         buf = NULL;
  60         len = 0;
  61
  62         n = args_strtonum(args, 'S', SHRT_MIN, SHRT_MAX, &cause);
  63         if (cause != NULL) {
  64                 top = gd->hsize;
  65                 xfree(cause);
  66         } else if (n < 0 && (u_int) -n > gd->hsize)
  67                 top = 0;
  68         else
  69                 top = gd->hsize + n;
  70         if (top > gd->hsize + gd->sy - 1)
  71                 top = gd->hsize + gd->sy - 1;
  72
  73         n = args_strtonum(args, 'E', SHRT_MIN, SHRT_MAX, &cause);
  74         if (cause != NULL) {
  75                 bottom = gd->hsize + gd->sy - 1;
  76                 xfree(cause);
  77         } else if (n < 0 && (u_int) -n > gd->hsize)
  78                 bottom = 0;
  79         else
  80                 bottom = gd->hsize + n;
  81         if (bottom > gd->hsize + gd->sy - 1)
  82                 bottom = gd->hsize + gd->sy - 1;
  83
  84         if (bottom < top) {
  85                 tmp = bottom;
  86                 bottom = top;
  87                 top = tmp;
  88         }
  89
  90         for (i = top; i <= bottom; i++) {
  91                line = grid_string_cells(s->grid, 0, i, screen_size_x(s));
  92                linelen = strlen(line);
  93
  94                buf = xrealloc(buf, 1, len + linelen + 1);
  95                memcpy(buf + len, line, linelen);
  96                len += linelen;
  97                buf[len++] = '\n';
  98
  99                xfree(line);
 100         }
 101
 102         limit = options_get_number(&global_options, "buffer-limit");
 103
 104         if (!args_has(args, 'b')) {
 105                 paste_add(&global_buffers, buf, len, limit);
 106                 return (0);
 107         }
 108
 109         buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 110         if (cause != NULL) {
 111                 ctx->error(ctx, "buffer %s", cause);
 112                 xfree(buf);
 113                 xfree(cause);
 114                 return (-1);
 115         }
 116
 117         if (paste_replace(&global_buffers, buffer, buf, len) != 0) {
 118                 ctx->error(ctx, "no buffer %d", buffer);
 119                 xfree(buf);
 120                 return (-1);
 121         }
 122
 123         return (0);
 124 }