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 <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "tmux.h"
  28
  29 void     window_name_callback(int, short, void *);
  30 char    *parse_window_name(struct window *, const char *);
  31
  32 void
  33 queue_window_name(struct window *w)
  34 {
  35         struct timeval  tv;
  36
  37         tv.tv_sec = 0;
  38         tv.tv_usec = NAME_INTERVAL * 1000L;
  39
  40         if (event_initialized(&w->name_timer))
  41                 evtimer_del(&w->name_timer);
  42         evtimer_set(&w->name_timer, window_name_callback, w);
  43         evtimer_add(&w->name_timer, &tv);
  44 }
  45
  46 void
  47 window_name_callback(unused int fd, unused short events, void *data)
  48 {
  49         struct window   *w = data;
  50         char            *name, *wname;
  51
  52         if (w->active == NULL)
  53                 return;
  54
  55         if (!options_get_number(&w->options, "automatic-rename")) {
  56                 if (event_initialized(&w->name_timer))
  57                         event_del(&w->name_timer);
  58                 return;
  59         }
  60         queue_window_name(w);
  61
  62         if (w->active->screen != &w->active->base)
  63                 name = NULL;
  64         else
  65                 name = get_proc_name(w->active->fd, w->active->tty);
  66         if (name == NULL)
  67                 wname = default_window_name(w);
  68         else {
  69                 /*
  70                  * If tmux is using the default command, it will be a login
  71                  * shell and argv[0] may have a - prefix. Remove this if it is
  72                  * present. Ick.
  73                  */
  74                 if (w->active->cmd != NULL && *w->active->cmd == '\0' &&
  75                     name != NULL && name[0] == '-' && name[1] != '\0')
  76                         wname = parse_window_name(w, name + 1);
  77                 else
  78                         wname = parse_window_name(w, name);
  79                 free(name);
  80         }
  81
  82         if (w->active->fd == -1) {
  83                 xasprintf(&name, "%s[dead]", wname);
  84                 free(wname);
  85                 wname = name;
  86         }
  87
  88         if (strcmp(wname, w->name)) {
  89                 window_set_name(w, wname);
  90                 server_status_window(w);
  91         }
  92         free(wname);
  93 }
  94
  95 char *
  96 default_window_name(struct window *w)
  97 {
  98         if (w->active->screen != &w->active->base)
  99                 return (xstrdup("[tmux]"));
 100         if (w->active->cmd != NULL && *w->active->cmd != '\0')
 101                 return (parse_window_name(w, w->active->cmd));
 102         return (parse_window_name(w, w->active->shell));
 103 }
 104
 105 char *
 106 parse_window_name(struct window *w, const char *in)
 107 {
 108         char    *copy, *name, *ptr, *prefix;
 109         size_t   prefixlen;
 110
 111         prefix = options_get_string(&w->options, "command-prefix");
 112         prefixlen = strlen(prefix);
 113
 114         name = copy = xstrdup(in);
 115         if (strncmp(name, prefix, prefixlen) == 0)
 116                 name = name + prefixlen;
 117
 118         while (*name == ' ')
 119                 name++;
 120         if ((ptr = strchr(name, ' ')) != NULL)
 121                 *ptr = '\0';
 122
 123         if (*name != '\0') {
 124                 ptr = name + strlen(name) - 1;
 125                 while (ptr > name && !isalnum((u_char)*ptr))
 126                         *ptr-- = '\0';
 127         }
 128
 129         if (*name == '/')
 130                 name = basename(name);
 131         name = xstrdup(name);
 132         free(copy);
 133         return (name);
 134 }