cmd-set-buffer.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
   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  * Add, set, append to or delete a paste buffer.
  28  */
  29
  30 static enum cmd_retval  cmd_set_buffer_exec(struct cmd *, struct cmdq_item *);
  31
  32 const struct cmd_entry cmd_set_buffer_entry = {
  33         .name = "set-buffer",
  34         .alias = "setb",
  35
  36         .args = { "ab:t:n:w", 0, 1, NULL },
  37         .usage = "[-aw] " CMD_BUFFER_USAGE " [-n new-buffer-name] "
  38                  CMD_TARGET_CLIENT_USAGE " data",
  39
  40         .flags = CMD_AFTERHOOK|CMD_CLIENT_TFLAG|CMD_CLIENT_CANFAIL,
  41         .exec = cmd_set_buffer_exec
  42 };
  43
  44 const struct cmd_entry cmd_delete_buffer_entry = {
  45         .name = "delete-buffer",
  46         .alias = "deleteb",
  47
  48         .args = { "b:", 0, 0, NULL },
  49         .usage = CMD_BUFFER_USAGE,
  50
  51         .flags = CMD_AFTERHOOK,
  52         .exec = cmd_set_buffer_exec
  53 };
  54
  55 static enum cmd_retval
  56 cmd_set_buffer_exec(struct cmd *self, struct cmdq_item *item)
  57 {
  58         struct args             *args = cmd_get_args(self);
  59         struct client           *tc = cmdq_get_target_client(item);
  60         struct paste_buffer     *pb;
  61         char                    *bufdata, *cause;
  62         const char              *bufname, *olddata;
  63         size_t                   bufsize, newsize;
  64
  65         bufname = args_get(args, 'b');
  66         if (bufname == NULL)
  67                 pb = NULL;
  68         else
  69                 pb = paste_get_name(bufname);
  70
  71         if (cmd_get_entry(self) == &cmd_delete_buffer_entry) {
  72                 if (pb == NULL) {
  73                         if (bufname != NULL) {
  74                                 cmdq_error(item, "unknown buffer: %s", bufname);
  75                                 return (CMD_RETURN_ERROR);
  76                         }
  77                         pb = paste_get_top(&bufname);
  78                 }
  79                 if (pb == NULL) {
  80                         cmdq_error(item, "no buffer");
  81                         return (CMD_RETURN_ERROR);
  82                 }
  83                 paste_free(pb);
  84                 return (CMD_RETURN_NORMAL);
  85         }
  86
  87         if (args_has(args, 'n')) {
  88                 if (pb == NULL) {
  89                         if (bufname != NULL) {
  90                                 cmdq_error(item, "unknown buffer: %s", bufname);
  91                                 return (CMD_RETURN_ERROR);
  92                         }
  93                         pb = paste_get_top(&bufname);
  94                 }
  95                 if (pb == NULL) {
  96                         cmdq_error(item, "no buffer");
  97                         return (CMD_RETURN_ERROR);
  98                 }
  99                 if (paste_rename(bufname, args_get(args, 'n'), &cause) != 0) {
 100                         cmdq_error(item, "%s", cause);
 101                         free(cause);
 102                         return (CMD_RETURN_ERROR);
 103                 }
 104                 return (CMD_RETURN_NORMAL);
 105         }
 106
 107         if (args_count(args) != 1) {
 108                 cmdq_error(item, "no data specified");
 109                 return (CMD_RETURN_ERROR);
 110         }
 111         if ((newsize = strlen(args_string(args, 0))) == 0)
 112                 return (CMD_RETURN_NORMAL);
 113
 114         bufsize = 0;
 115         bufdata = NULL;
 116
 117         if (args_has(args, 'a') && pb != NULL) {
 118                 olddata = paste_buffer_data(pb, &bufsize);
 119                 bufdata = xmalloc(bufsize);
 120                 memcpy(bufdata, olddata, bufsize);
 121         }
 122
 123         bufdata = xrealloc(bufdata, bufsize + newsize);
 124         memcpy(bufdata + bufsize, args_string(args, 0), newsize);
 125         bufsize += newsize;
 126
 127         if (paste_set(bufdata, bufsize, bufname, &cause) != 0) {
 128                 cmdq_error(item, "%s", cause);
 129                 free(bufdata);
 130                 free(cause);
 131                 return (CMD_RETURN_ERROR);
 132         }
 133         if (args_has(args, 'w') && tc != NULL)
 134                 tty_set_selection(&tc->tty, "", bufdata, bufsize);
 135
 136         return (CMD_RETURN_NORMAL);
 137 }