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Annotation of embedaddon/tmux/names.c, revision 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: }