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Annotation of src/usr.bin/tmux/cmd-set-hook.c, Revision 1.2

1.2     ! nicm        1: /* $OpenBSD: cmd-set-hook.c,v 1.1 2015/12/08 01:10:31 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2012 Thomas Adam <thomas@xteddy.org>
                      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 <stdlib.h>
                     22: #include <string.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: /*
                     27:  * Set or show global or session hooks.
                     28:  */
                     29:
                     30: enum cmd_retval cmd_set_hook_exec(struct cmd *, struct cmd_q *);
                     31:
                     32: const struct cmd_entry cmd_set_hook_entry = {
                     33:        "set-hook", NULL,
                     34:        "gt:u", 1, 2,
                     35:        "[-gu] " CMD_TARGET_SESSION_USAGE " hook-name [command]",
                     36:        0,
                     37:        cmd_set_hook_exec
                     38: };
                     39:
                     40: const struct cmd_entry cmd_show_hooks_entry = {
                     41:        "show-hooks", NULL,
                     42:        "gt:", 0, 1,
                     43:        "[-g] " CMD_TARGET_SESSION_USAGE,
                     44:        0,
                     45:        cmd_set_hook_exec
                     46: };
                     47:
                     48: enum cmd_retval
                     49: cmd_set_hook_exec(struct cmd *self, struct cmd_q *cmdq)
                     50: {
                     51:        struct args     *args = self->args;
                     52:        struct session  *s;
                     53:        struct cmd_list *cmdlist;
                     54:        struct hooks    *hooks;
                     55:        struct hook     *hook;
                     56:        char            *cause, *tmp;
                     57:        const char      *name, *cmd;
                     58:
                     59:        if (args_has(args, 'g'))
                     60:                hooks = global_hooks;
                     61:        else {
                     62:                s = cmd_find_session(cmdq, args_get(args, 't'), 0);
                     63:                if (s == NULL)
                     64:                        return (CMD_RETURN_ERROR);
                     65:                hooks = s->hooks;
                     66:        }
                     67:
                     68:        if (self->entry == &cmd_show_hooks_entry) {
                     69:                hook = hooks_first(hooks);
                     70:                while (hook != NULL) {
                     71:                        tmp = cmd_list_print(hook->cmdlist);
                     72:                        cmdq_print(cmdq, "%s -> %s", hook->name, tmp);
                     73:                        free(tmp);
                     74:
                     75:                        hook = hooks_next(hook);
                     76:                }
                     77:                return (CMD_RETURN_NORMAL);
                     78:        }
                     79:
                     80:        name = args->argv[0];
                     81:        if (*name == '\0') {
                     82:                cmdq_error(cmdq, "invalid hook name");
                     83:                return (CMD_RETURN_ERROR);
                     84:        }
                     85:        if (args->argc < 2)
                     86:                cmd = NULL;
                     87:        else
                     88:                cmd = args->argv[1];
                     89:
                     90:        if (args_has(args, 'u')) {
                     91:                if (cmd != NULL) {
                     92:                        cmdq_error(cmdq, "command passed to unset hook: %s",
                     93:                            name);
                     94:                        return (CMD_RETURN_ERROR);
                     95:                }
1.2     ! nicm       96:                hooks_remove(hooks, name);
1.1       nicm       97:                return (CMD_RETURN_NORMAL);
                     98:        }
                     99:
                    100:        if (cmd == NULL) {
                    101:                cmdq_error(cmdq, "no command to set hook: %s", name);
                    102:                return (CMD_RETURN_ERROR);
                    103:        }
                    104:        if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
                    105:                if (cause != NULL) {
                    106:                        cmdq_error(cmdq, "%s", cause);
                    107:                        free(cause);
                    108:                }
                    109:                return (CMD_RETURN_ERROR);
                    110:        }
                    111:        hooks_add(hooks, name, cmdlist);
                    112:        cmd_list_free(cmdlist);
                    113:
                    114:        return (CMD_RETURN_NORMAL);
                    115: }