cmd-load-buffer.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
   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 <errno.h>
  22 #include <fcntl.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28 #include "tmux.h"
  29
  30 /*
  31  * Loads a paste buffer from a file.
  32  */
  33
  34 static enum cmd_retval  cmd_load_buffer_exec(struct cmd *, struct cmdq_item *);
  35
  36 const struct cmd_entry cmd_load_buffer_entry = {
  37         .name = "load-buffer",
  38         .alias = "loadb",
  39
  40         .args = { "b:t:w", 1, 1, NULL },
  41         .usage = CMD_BUFFER_USAGE " " CMD_TARGET_CLIENT_USAGE " path",
  42
  43         .flags = CMD_AFTERHOOK|CMD_CLIENT_TFLAG|CMD_CLIENT_CANFAIL,
  44         .exec = cmd_load_buffer_exec
  45 };
  46
  47 struct cmd_load_buffer_data {
  48         struct client           *client;
  49         struct cmdq_item        *item;
  50         char                    *name;
  51 };
  52
  53 static void
  54 cmd_load_buffer_done(__unused struct client *c, const char *path, int error,
  55     int closed, struct evbuffer *buffer, void *data)
  56 {
  57         struct cmd_load_buffer_data     *cdata = data;
  58         struct client                   *tc = cdata->client;
  59         struct cmdq_item                *item = cdata->item;
  60         void                            *bdata = EVBUFFER_DATA(buffer);
  61         size_t                           bsize = EVBUFFER_LENGTH(buffer);
  62         void                            *copy;
  63         char                            *cause;
  64
  65         if (!closed)
  66                 return;
  67
  68         if (error != 0)
  69                 cmdq_error(item, "%s: %s", path, strerror(error));
  70         else if (bsize != 0) {
  71                 copy = xmalloc(bsize);
  72                 memcpy(copy, bdata, bsize);
  73                 if (paste_set(copy, bsize, cdata->name, &cause) != 0) {
  74                         cmdq_error(item, "%s", cause);
  75                         free(cause);
  76                         free(copy);
  77                 } else if (tc != NULL &&
  78                     tc->session != NULL &&
  79                     (~tc->flags & CLIENT_DEAD))
  80                         tty_set_selection(&tc->tty, copy, bsize);
  81                 if (tc != NULL)
  82                         server_client_unref(tc);
  83         }
  84         cmdq_continue(item);
  85
  86         free(cdata->name);
  87         free(cdata);
  88 }
  89
  90 static enum cmd_retval
  91 cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
  92 {
  93         struct args                     *args = cmd_get_args(self);
  94         struct client                   *tc = cmdq_get_target_client(item);
  95         struct cmd_load_buffer_data     *cdata;
  96         const char                      *bufname = args_get(args, 'b');
  97         char                            *path;
  98
  99         cdata = xcalloc(1, sizeof *cdata);
 100         cdata->item = item;
 101         if (bufname != NULL)
 102                 cdata->name = xstrdup(bufname);
 103         if (args_has(args, 'w') && tc != NULL) {
 104                 cdata->client = tc;
 105                 cdata->client->references++;
 106         }
 107
 108         path = format_single_from_target(item, args_string(args, 0));
 109         file_read(cmdq_get_client(item), path, cmd_load_buffer_done, cdata);
 110         free(path);
 111
 112         return (CMD_RETURN_WAIT);
 113 }