cmd-list.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 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 static u_int cmd_list_next_group = 1;
  27
  28 struct cmd_list *
  29 cmd_list_new(void)
  30 {
  31         struct cmd_list *cmdlist;
  32
  33         cmdlist = xcalloc(1, sizeof *cmdlist);
  34         cmdlist->references = 1;
  35         cmdlist->group = cmd_list_next_group++;
  36         TAILQ_INIT(&cmdlist->list);
  37         return (cmdlist);
  38 }
  39
  40 void
  41 cmd_list_append(struct cmd_list *cmdlist, struct cmd *cmd)
  42 {
  43         cmd->group = cmdlist->group;
  44         TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
  45 }
  46
  47 void
  48 cmd_list_move(struct cmd_list *cmdlist, struct cmd_list *from)
  49 {
  50         struct cmd      *cmd, *cmd1;
  51
  52         TAILQ_FOREACH_SAFE(cmd, &from->list, qentry, cmd1) {
  53                 TAILQ_REMOVE(&from->list, cmd, qentry);
  54                 TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
  55         }
  56         cmdlist->group = cmd_list_next_group++;
  57 }
  58
  59 void
  60 cmd_list_free(struct cmd_list *cmdlist)
  61 {
  62         struct cmd      *cmd, *cmd1;
  63
  64         if (--cmdlist->references != 0)
  65                 return;
  66
  67         TAILQ_FOREACH_SAFE(cmd, &cmdlist->list, qentry, cmd1) {
  68                 TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
  69                 cmd_free(cmd);
  70         }
  71
  72         free(cmdlist);
  73 }
  74
  75 char *
  76 cmd_list_print(struct cmd_list *cmdlist, int escaped)
  77 {
  78         struct cmd      *cmd;
  79         char            *buf, *this;
  80         size_t           len;
  81
  82         len = 1;
  83         buf = xcalloc(1, len);
  84
  85         TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
  86                 this = cmd_print(cmd);
  87
  88                 len += strlen(this) + 4;
  89                 buf = xrealloc(buf, len);
  90
  91                 strlcat(buf, this, len);
  92                 if (TAILQ_NEXT(cmd, qentry) != NULL) {
  93                         if (escaped)
  94                                 strlcat(buf, " \\; ", len);
  95                         else
  96                                 strlcat(buf, " ; ", len);
  97                 }
  98
  99                 free(this);
 100         }
 101
 102         return (buf);
 103 }