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Annotation of embedaddon/tmux/names.c, revision 1.1.1.1

1.1       misho       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 <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, 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 && !isalnum((u_char)*ptr))
                    155:                        *ptr-- = '\0';
                    156:        }
                    157: 
                    158:        if (*name == '/')
                    159:                name = basename(name);
                    160:        name = xstrdup(name);
                    161:        free(copy);
                    162:        return (name);
                    163: }