1 /* $OpenBSD: names.c,v 1.45 2021/08/20 17:50:42 nicm Exp $ */
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 <ctype.h>
22 #include <libgen.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "tmux.h"
27
28 static void name_time_callback(int, short, void *);
29 static int name_time_expired(struct window *, struct timeval *);
30
31 static char *format_window_name(struct window *);
32
33 static void
name_time_callback(__unused int fd,__unused short events,void * arg)34 name_time_callback(__unused int fd, __unused short events, void *arg)
35 {
36 struct window *w = arg;
37
38 /* The event loop will call check_window_name for us on the way out. */
39 log_debug("@%u name timer expired", w->id);
40 }
41
42 static int
name_time_expired(struct window * w,struct timeval * tv)43 name_time_expired(struct window *w, struct timeval *tv)
44 {
45 struct timeval offset;
46
47 timersub(tv, &w->name_time, &offset);
48 if (offset.tv_sec != 0 || offset.tv_usec > NAME_INTERVAL)
49 return (0);
50 return (NAME_INTERVAL - offset.tv_usec);
51 }
52
53 void
check_window_name(struct window * w)54 check_window_name(struct window *w)
55 {
56 struct timeval tv, next;
57 char *name;
58 int left;
59
60 if (w->active == NULL)
61 return;
62
63 if (!options_get_number(w->options, "automatic-rename"))
64 return;
65
66 if (~w->active->flags & PANE_CHANGED) {
67 log_debug("@%u active pane not changed", w->id);
68 return;
69 }
70 log_debug("@%u active pane changed", w->id);
71
72 gettimeofday(&tv, NULL);
73 left = name_time_expired(w, &tv);
74 if (left != 0) {
75 if (!event_initialized(&w->name_event))
76 evtimer_set(&w->name_event, name_time_callback, w);
77 if (!evtimer_pending(&w->name_event, NULL)) {
78 log_debug("@%u name timer queued (%d left)", w->id,
79 left);
80 timerclear(&next);
81 next.tv_usec = left;
82 event_add(&w->name_event, &next);
83 } else {
84 log_debug("@%u name timer already queued (%d left)",
85 w->id, left);
86 }
87 return;
88 }
89 memcpy(&w->name_time, &tv, sizeof w->name_time);
90 if (event_initialized(&w->name_event))
91 evtimer_del(&w->name_event);
92
93 w->active->flags &= ~PANE_CHANGED;
94
95 name = format_window_name(w);
96 if (strcmp(name, w->name) != 0) {
97 log_debug("@%u new name %s (was %s)", w->id, name, w->name);
98 window_set_name(w, name);
99 server_redraw_window_borders(w);
100 server_status_window(w);
101 } else
102 log_debug("@%u name not changed (still %s)", w->id, w->name);
103
104 free(name);
105 }
106
107 char *
default_window_name(struct window * w)108 default_window_name(struct window *w)
109 {
110 char *cmd, *s;
111
112 if (w->active == NULL)
113 return (xstrdup(""));
114 cmd = cmd_stringify_argv(w->active->argc, w->active->argv);
115 if (cmd != NULL && *cmd != '\0')
116 s = parse_window_name(cmd);
117 else
118 s = parse_window_name(w->active->shell);
119 free(cmd);
120 return (s);
121 }
122
123 static char *
format_window_name(struct window * w)124 format_window_name(struct window *w)
125 {
126 struct format_tree *ft;
127 const char *fmt;
128 char *name;
129
130 ft = format_create(NULL, NULL, FORMAT_WINDOW|w->id, 0);
131 format_defaults_window(ft, w);
132 format_defaults_pane(ft, w->active);
133
134 fmt = options_get_string(w->options, "automatic-rename-format");
135 name = format_expand(ft, fmt);
136
137 format_free(ft);
138 return (name);
139 }
140
141 char *
parse_window_name(const char * in)142 parse_window_name(const char *in)
143 {
144 char *copy, *name, *ptr;
145
146 name = copy = xstrdup(in);
147 if (*name == '"')
148 name++;
149 name[strcspn(name, "\"")] = '\0';
150
151 if (strncmp(name, "exec ", (sizeof "exec ") - 1) == 0)
152 name = name + (sizeof "exec ") - 1;
153
154 while (*name == ' ' || *name == '-')
155 name++;
156 if ((ptr = strchr(name, ' ')) != NULL)
157 *ptr = '\0';
158
159 if (*name != '\0') {
160 ptr = name + strlen(name) - 1;
161 while (ptr > name &&
162 !isalnum((u_char)*ptr) &&
163 !ispunct((u_char)*ptr))
164 *ptr-- = '\0';
165 }
166
167 if (*name == '/')
168 name = basename(name);
169 name = xstrdup(name);
170 free(copy);
171 return (name);
172 }
173