cmd-paste-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 <stdlib.h>
  22 #include <string.h>
  23 #include <vis.h>
  24
  25 #include "tmux.h"
  26
  27 /*
  28  * Paste paste buffer if present.
  29  */
  30
  31 int     cmd_paste_buffer_exec(struct cmd *, struct cmd_ctx *);
  32
  33 void    cmd_paste_buffer_filter(
  34             struct window_pane *, const char *, size_t, const char *);
  35
  36 const struct cmd_entry cmd_paste_buffer_entry = {
  37         "paste-buffer", "pasteb",
  38         "db:rs:t:", 0, 0,
  39         "[-dr] [-s separator] [-b buffer-index] [-t target-pane]",
  40         0,
  41         NULL,
  42         NULL,
  43         cmd_paste_buffer_exec
  44 };
  45
  46 int
  47 cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
  48 {
  49         struct args             *args = self->args;
  50         struct window_pane      *wp;
  51         struct session          *s;
  52         struct paste_buffer     *pb;
  53         const char              *sepstr;
  54         char                    *cause;
  55         int                      buffer;
  56
  57         if (cmd_find_pane(ctx, args_get(args, 't'), &s, &wp) == NULL)
  58                 return (-1);
  59
  60         if (!args_has(args, 'b'))
  61                 buffer = -1;
  62         else {
  63                 buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
  64                 if (cause != NULL) {
  65                         ctx->error(ctx, "buffer %s", cause);
  66                         xfree(cause);
  67                         return (-1);
  68                 }
  69         }
  70
  71         if (buffer == -1)
  72                 pb = paste_get_top(&global_buffers);
  73         else {
  74                 pb = paste_get_index(&global_buffers, buffer);
  75                 if (pb == NULL) {
  76                         ctx->error(ctx, "no buffer %d", buffer);
  77                         return (-1);
  78                 }
  79         }
  80
  81         if (pb != NULL) {
  82                 sepstr = args_get(args, 's');
  83                 if (sepstr == NULL) {
  84                         if (args_has(args, 'r'))
  85                                 sepstr = "\n";
  86                         else
  87                                 sepstr = "\r";
  88                 }
  89                 cmd_paste_buffer_filter(wp, pb->data, pb->size, sepstr);
  90         }
  91
  92         /* Delete the buffer if -d. */
  93         if (args_has(args, 'd')) {
  94                 if (buffer == -1)
  95                         paste_free_top(&global_buffers);
  96                 else
  97                         paste_free_index(&global_buffers, buffer);
  98         }
  99
 100         return (0);
 101 }
 102
 103 /* Add bytes to a buffer and filter '\n' according to separator. */
 104 void
 105 cmd_paste_buffer_filter(
 106     struct window_pane *wp, const char *data, size_t size, const char *sep)
 107 {
 108         const char      *end = data + size;
 109         const char      *lf;
 110         size_t           seplen;
 111
 112         seplen = strlen(sep);
 113         while ((lf = memchr(data, '\n', end - data)) != NULL) {
 114                 if (lf != data)
 115                         bufferevent_write(wp->event, data, lf - data);
 116                 bufferevent_write(wp->event, sep, seplen);
 117                 data = lf + 1;
 118         }
 119
 120         if (end != data)
 121                 bufferevent_write(wp->event, data, end - data);
 122 }