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Annotation of src/usr.bin/tmux/cmd-bind-key.c, Revision 1.4

1.4     ! nicm        1: /* $OpenBSD: cmd-bind-key.c,v 1.3 2009/07/24 14:52:47 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2007 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 "tmux.h"
                     22:
                     23: /*
                     24:  * Bind a key to a command, this recurses through cmd_*.
                     25:  */
                     26:
                     27: int    cmd_bind_key_parse(struct cmd *, int, char **, char **);
                     28: int    cmd_bind_key_exec(struct cmd *, struct cmd_ctx *);
                     29: void   cmd_bind_key_free(struct cmd *);
                     30: size_t cmd_bind_key_print(struct cmd *, char *, size_t);
                     31:
                     32: struct cmd_bind_key_data {
                     33:        int              key;
                     34:        int              can_repeat;
                     35:        struct cmd_list *cmdlist;
                     36: };
                     37:
                     38: const struct cmd_entry cmd_bind_key_entry = {
                     39:        "bind-key", "bind",
1.3       nicm       40:        "[-nr] key command [arguments]",
1.2       nicm       41:        0, 0,
1.1       nicm       42:        NULL,
                     43:        cmd_bind_key_parse,
                     44:        cmd_bind_key_exec,
                     45:        cmd_bind_key_free,
                     46:        cmd_bind_key_print
                     47: };
                     48:
                     49: int
                     50: cmd_bind_key_parse(struct cmd *self, int argc, char **argv, char **cause)
                     51: {
                     52:        struct cmd_bind_key_data        *data;
1.3       nicm       53:        int                              opt, no_prefix = 0;
1.1       nicm       54:
                     55:        self->data = data = xmalloc(sizeof *data);
                     56:        data->can_repeat = 0;
                     57:        data->cmdlist = NULL;
                     58:
1.3       nicm       59:        while ((opt = getopt(argc, argv, "nr")) != -1) {
1.1       nicm       60:                switch (opt) {
1.3       nicm       61:                case 'n':
                     62:                        no_prefix = 1;
                     63:                        break;
1.1       nicm       64:                case 'r':
                     65:                        data->can_repeat = 1;
                     66:                        break;
                     67:                default:
                     68:                        goto usage;
                     69:                }
                     70:        }
                     71:        argc -= optind;
                     72:        argv += optind;
                     73:        if (argc < 1)
                     74:                goto usage;
                     75:
                     76:        if ((data->key = key_string_lookup_string(argv[0])) == KEYC_NONE) {
                     77:                xasprintf(cause, "unknown key: %s", argv[0]);
                     78:                goto error;
                     79:        }
1.3       nicm       80:        if (!no_prefix)
                     81:                data->key |= KEYC_PREFIX;
1.1       nicm       82:
                     83:        argc--;
                     84:        argv++;
                     85:        if ((data->cmdlist = cmd_list_parse(argc, argv, cause)) == NULL)
                     86:                goto error;
                     87:
                     88:        return (0);
                     89:
                     90: usage:
                     91:        xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
                     92:
                     93: error:
                     94:        self->entry->free(self);
                     95:        return (-1);
                     96: }
                     97:
                     98: int
                     99: cmd_bind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
                    100: {
                    101:        struct cmd_bind_key_data        *data = self->data;
                    102:
                    103:        if (data == NULL)
                    104:                return (0);
                    105:
                    106:        key_bindings_add(data->key, data->can_repeat, data->cmdlist);
                    107:        data->cmdlist = NULL;   /* avoid free */
                    108:
                    109:        return (0);
                    110: }
                    111:
                    112: void
                    113: cmd_bind_key_free(struct cmd *self)
                    114: {
                    115:        struct cmd_bind_key_data        *data = self->data;
                    116:
                    117:        if (data->cmdlist != NULL)
                    118:                cmd_list_free(data->cmdlist);
                    119:        xfree(data);
                    120: }
                    121:
                    122: size_t
                    123: cmd_bind_key_print(struct cmd *self, char *buf, size_t len)
                    124: {
                    125:        struct cmd_bind_key_data        *data = self->data;
                    126:        size_t                           off = 0;
                    127:        const char                      *skey;
                    128:
                    129:        off += xsnprintf(buf, len, "%s", self->entry->name);
                    130:        if (data == NULL)
                    131:                return (off);
                    132:        if (off < len) {
                    133:                skey = key_string_lookup_key(data->key);
                    134:                off += xsnprintf(buf + off, len - off, " %s ", skey);
                    135:        }
                    136:        if (off < len)
                    137:                off += cmd_list_print(data->cmdlist, buf + off, len - off);
                    138:        return (off);
                    139: }