names.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 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 <ctype.h>
  22 #include <libgen.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include "tmux.h"
  27
  28 void     window_name_callback(unused int, unused short, void *);
  29 char    *parse_window_name(const char *);
  30
  31 void
  32 queue_window_name(struct window *w)
  33 {
  34         struct timeval  tv;
  35
  36         tv.tv_sec = 0;
  37         tv.tv_usec = NAME_INTERVAL * 1000L;
  38
  39         evtimer_del(&w->name_timer);
  40         evtimer_set(&w->name_timer, window_name_callback, w);
  41         evtimer_add(&w->name_timer, &tv);
  42 }
  43
  44 /* ARGSUSED */
  45 void
  46 window_name_callback(unused int fd, unused short events, void *data)
  47 {
  48         struct window   *w = data;
  49         char            *name, *wname;
  50
  51         queue_window_name(w);   /* XXX even if the option is off? */
  52         if (!options_get_number(&w->options, "automatic-rename"))
  53                 return;
  54
  55         if (w->active->screen != &w->active->base)
  56                 name = NULL;
  57         else
  58                 name = get_proc_name(w->active->fd, w->active->tty);
  59         if (name == NULL)
  60                 wname = default_window_name(w);
  61         else {
  62                 /*
  63                  * If tmux is using the default command, it will be a login
  64                  * shell and argv[0] may have a - prefix. Remove this if it is
  65                  * present. Ick.
  66                  */
  67                 if (w->active->cmd != NULL && *w->active->cmd == '\0' &&
  68                     name != NULL && name[0] == '-' && name[1] != '\0')
  69                         wname = parse_window_name(name + 1);
  70                 else
  71                                 wname = parse_window_name(name);
  72                 xfree(name);
  73         }
  74
  75         if (w->active->fd == -1) {
  76                 xasprintf(&name, "%s[dead]", wname);
  77                 xfree(wname);
  78                 wname = name;
  79         }
  80
  81         if (strcmp(wname, w->name) == 0)
  82                 xfree(wname);
  83         else {
  84                 xfree(w->name);
  85                 w->name = wname;
  86                 server_status_window(w);
  87         }
  88 }
  89
  90 char *
  91 default_window_name(struct window *w)
  92 {
  93         if (w->active->screen != &w->active->base)
  94                 return (xstrdup("[tmux]"));
  95         if (w->active->cmd != NULL && *w->active->cmd != '\0')
  96                 return (parse_window_name(w->active->cmd));
  97         return (parse_window_name(w->active->shell));
  98 }
  99
 100 char *
 101 parse_window_name(const char *in)
 102 {
 103         char    *copy, *name, *ptr;
 104
 105         name = copy = xstrdup(in);
 106         if (strncmp(name, "exec ", (sizeof "exec ") - 1) == 0)
 107                 name = name + (sizeof "exec ") - 1;
 108
 109         while (*name == ' ')
 110                 name++;
 111         if ((ptr = strchr(name, ' ')) != NULL)
 112                 *ptr = '\0';
 113
 114         if (*name != '\0') {
 115                 ptr = name + strlen(name) - 1;
 116                 while (ptr > name && !isalnum((u_char)*ptr))
 117                         *ptr-- = '\0';
 118         }
 119
 120         if (*name == '/')
 121                 name = basename(name);
 122         name = xstrdup(name);
 123         xfree(copy);
 124         return (name);
 125 }