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 <string.h>
  22
  23 #include "tmux.h"
  24
  25 /*
  26  * Paste paste buffer if present.
  27  */
  28
  29 int     cmd_paste_buffer_exec(struct cmd *, struct cmd_ctx *);
  30 void    cmd_paste_buffer_lf2cr(struct window_pane *, const char *, size_t);
  31
  32 const struct cmd_entry cmd_paste_buffer_entry = {
  33         "paste-buffer", "pasteb",
  34         "[-dr] " CMD_BUFFER_PANE_USAGE,
  35         0, "dr",
  36         cmd_buffer_init,
  37         cmd_buffer_parse,
  38         cmd_paste_buffer_exec,
  39         cmd_buffer_free,
  40         cmd_buffer_print
  41 };
  42
  43 int
  44 cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
  45 {
  46         struct cmd_buffer_data  *data = self->data;
  47         struct window_pane      *wp;
  48         struct session          *s;
  49         struct paste_buffer     *pb;
  50
  51         if (cmd_find_pane(ctx, data->target, &s, &wp) == NULL)
  52                 return (-1);
  53
  54         if (data->buffer == -1)
  55                 pb = paste_get_top(&s->buffers);
  56         else {
  57                 if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL) {
  58                         ctx->error(ctx, "no buffer %d", data->buffer);
  59                         return (-1);
  60                 }
  61         }
  62
  63         if (pb != NULL) {
  64                 /* -r means raw data without LF->CR conversion. */
  65                 if (cmd_check_flag(data->chflags, 'r'))
  66                         bufferevent_write(wp->event, pb->data, pb->size);
  67                 else
  68                         cmd_paste_buffer_lf2cr(wp, pb->data, pb->size);
  69         }
  70
  71         /* Delete the buffer if -d. */
  72         if (cmd_check_flag(data->chflags, 'd')) {
  73                 if (data->buffer == -1)
  74                         paste_free_top(&s->buffers);
  75                 else
  76                         paste_free_index(&s->buffers, data->buffer);
  77         }
  78
  79         return (0);
  80 }
  81
  82 /* Add bytes to a buffer but change every '\n' to '\r'. */
  83 void
  84 cmd_paste_buffer_lf2cr(struct window_pane *wp, const char *data, size_t size)
  85 {
  86         const char      *end = data + size;
  87         const char      *lf;
  88
  89         while ((lf = memchr(data, '\n', end - data)) != NULL) {
  90                 if (lf != data)
  91                         bufferevent_write(wp->event, data, lf - data);
  92                 bufferevent_write(wp->event, "\r", 1);
  93                 data = lf + 1;
  94         }
  95
  96         if (end != data)
  97                 bufferevent_write(wp->event, data, end - data);
  98 }