source: set.h @ 4f6dfbb

Last change on this file since 4f6dfbb was 5ebff60, checked in by dequis <dx@…>, at 2015-02-20T22:50:54Z

Reindent everything to K&R style with tabs

Used uncrustify, with the configuration file in ./doc/uncrustify.cfg

Commit author set to "Indent <please@…>" so that it's easier to
skip while doing git blame.

  • Property mode set to 100644
File size: 4.6 KB
Line 
1/********************************************************************\
2  * BitlBee -- An IRC to other IM-networks gateway                     *
3  *                                                                    *
4  * Copyright 2002-2006 Wilmer van der Gaast and others                *
5  \********************************************************************/
6
7/* Some stuff to register, handle and save user preferences             */
8
9/*
10  This program is free software; you can redistribute it and/or modify
11  it under the terms of the GNU General Public License as published by
12  the Free Software Foundation; either version 2 of the License, or
13  (at your option) any later version.
14
15  This program is distributed in the hope that it will be useful,
16  but WITHOUT ANY WARRANTY; without even the implied warranty of
17  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  GNU General Public License for more details.
19
20  You should have received a copy of the GNU General Public License with
21  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
22  if not, write to the Free Software Foundation, Inc., 51 Franklin St.,
23  Fifth Floor, Boston, MA  02110-1301  USA
24*/
25
26#ifndef __SET_H__
27#define __SET_H__
28
29struct set;
30
31/* This used to be specific to irc_t structures, but it's more generic now
32   (so it can also be used for account_t structs). It's pretty simple, but
33   so far pretty useful.
34
35   In short, it just keeps a linked list of settings/variables and it also
36   remembers a default value for every setting. And to prevent the user
37   from setting invalid values, you can write an evaluator function for
38   every setting, which can check a new value and block it by returning
39   NULL, or replace it by returning a new value. See struct set.eval. */
40
41typedef char *(*set_eval) (struct set *set, char *value);
42
43extern char *SET_INVALID;
44
45typedef enum {
46        SET_NOSAVE = 0x0001,   /* Don't save this setting (i.e. stored elsewhere). */
47        SET_NULL_OK = 0x0100,  /* set->value == NULL is allowed. */
48        SET_HIDDEN = 0x0200,   /* Don't show up in setting lists. Mostly for internal storage. */
49        SET_PASSWORD = 0x0400, /* Value shows up in settings list as "********". */
50        SET_HIDDEN_DEFAULT = 0x0800, /* Hide unless changed from default. */
51} set_flags_t;
52
53typedef struct set {
54        void *data;     /* Here you can save a pointer to the
55                           object this settings belongs to. */
56
57        char *key;
58        char *old_key;  /* Previously known as; for smooth upgrades. */
59        char *value;
60        char *def;      /* Default value. If the set_setstr() function
61                           notices a new value is exactly the same as
62                           the default, value gets set to NULL. So when
63                           you read a setting, don't forget about this!
64                           In fact, you should only read values using
65                           set_getstr/int(). */
66
67        set_flags_t flags; /* Mostly defined per user. */
68
69        /* Eval: Returns SET_INVALID if the value is incorrect, exactly
70           the passed value variable, or a corrected value. In case of
71           the latter, set_setstr() will free() the returned string! */
72        set_eval eval;
73        void *eval_data;
74        struct set *next;
75} set_t;
76
77#define set_value(set) ((set)->value) ? ((set)->value) : ((set)->def)
78
79/* Should be pretty clear. */
80set_t *set_add(set_t **head, const char *key, const char *def, set_eval eval, void *data);
81
82/* Returns the raw set_t. Might be useful sometimes. */
83set_t *set_find(set_t **head, const char *key);
84
85/* Returns a pointer to the string value of this setting. Don't modify the
86   returned string, and don't free() it! */
87G_MODULE_EXPORT char *set_getstr(set_t **head, const char *key);
88
89/* Get an integer. In previous versions set_getint() was also used to read
90   boolean values, but this SHOULD be done with set_getbool() now! */
91G_MODULE_EXPORT int set_getint(set_t **head, const char *key);
92G_MODULE_EXPORT int set_getbool(set_t **head, const char *key);
93
94/* set_setstr() strdup()s the given value, so after using this function
95   you can free() it, if you want. */
96int set_setstr(set_t **head, const char *key, char *value);
97int set_setint(set_t **head, const char *key, int value);
98void set_del(set_t **head, const char *key);
99int set_reset(set_t **head, const char *key);
100
101/* returns true if a setting shall be shown to the user */
102int set_isvisible(set_t *set);
103
104/* Two very useful generic evaluators. */
105char *set_eval_int(set_t *set, char *value);
106char *set_eval_bool(set_t *set, char *value);
107
108/* Another more complicated one. */
109char *set_eval_list(set_t *set, char *value);
110
111/* Some not very generic evaluators that really shouldn't be here... */
112char *set_eval_to_char(set_t *set, char *value);
113char *set_eval_oauth(set_t *set, char *value);
114
115#endif /* __SET_H__ */
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