1 /* $OpenBSD: names.c,v 1.41 2017/07/21 12:58:02 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 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 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 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_status_window(w); 100 } else 101 log_debug("@%u name not changed (still %s)", w->id, w->name); 102 103 free(name); 104 } 105 106 char * 107 default_window_name(struct window *w) 108 { 109 char *cmd, *s; 110 111 cmd = cmd_stringify_argv(w->active->argc, w->active->argv); 112 if (cmd != NULL && *cmd != '\0') 113 s = parse_window_name(cmd); 114 else 115 s = parse_window_name(w->active->shell); 116 free(cmd); 117 return (s); 118 } 119 120 static char * 121 format_window_name(struct window *w) 122 { 123 struct format_tree *ft; 124 const char *fmt; 125 char *name; 126 127 ft = format_create(NULL, NULL, FORMAT_WINDOW|w->id, 0); 128 format_defaults_window(ft, w); 129 format_defaults_pane(ft, w->active); 130 131 fmt = options_get_string(w->options, "automatic-rename-format"); 132 name = format_expand(ft, fmt); 133 134 format_free(ft); 135 return (name); 136 } 137 138 char * 139 parse_window_name(const char *in) 140 { 141 char *copy, *name, *ptr; 142 143 name = copy = xstrdup(in); 144 if (strncmp(name, "exec ", (sizeof "exec ") - 1) == 0) 145 name = name + (sizeof "exec ") - 1; 146 147 while (*name == ' ' || *name == '-') 148 name++; 149 if ((ptr = strchr(name, ' ')) != NULL) 150 *ptr = '\0'; 151 152 if (*name != '\0') { 153 ptr = name + strlen(name) - 1; 154 while (ptr > name && 155 !isalnum((u_char)*ptr) && 156 !ispunct((u_char)*ptr)) 157 *ptr-- = '\0'; 158 } 159 160 if (*name == '/') 161 name = basename(name); 162 name = xstrdup(name); 163 free(copy); 164 return (name); 165 } 166