2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2008 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file server/options.c
44 static void option__label(int attribute((unused
)) nvec
,
46 option_set(vec
[0], vec
[1]);
49 static void option__include(int attribute((unused
)) nvec
,
51 option__readfile(vec
[0]);
54 static void option__columns(int nvec
,
58 c
.ncolumns
= nvec
- 1;
60 hash_add(columns
, vec
[0], &c
, HASH_INSERT_OR_REPLACE
);
63 static struct option
{
66 void (*handler
)(int nvec
, char **vec
);
68 { "columns", 1, INT_MAX
, option_columns
},
69 { "include", 1, 1, option_include
},
70 { "label", 2, 2, option_label
},
73 static void option__split_error(const char *msg
,
75 struct read_options_state
*cs
= u
;
77 error(0, "%s:%d: %s", cs
->name
, cs
->line
, msg
);
80 static void option__readfile(const char *name
) {
85 struct read_options_state cs
;
88 if(!(cs
.name
= mx_find(name
)))
90 if(!(fp
= fopen(cs
.name
, "r")))
91 fatal(errno
, "error opening %s", cs
.name
);
93 while(!inputline(cs
.name
, fp
, &buffer
, '\n')) {
95 if(!(vec
= split(buffer
, &n
, SPLIT_COMMENTS
|SPLIT_QUOTES
,
96 option__split_error
, &cs
)))
100 if((i
= TABLE_FIND(options
, struct option
, name
, vec
[0])) == -1) {
101 error(0, "%s:%d: unknown option '%s'", cs
.name
, cs
.line
, vec
[0]);
106 if(n
< options
[i
].minargs
) {
107 error(0, "%s:%d: too few arguments to '%s'", cs
.name
, cs
.line
, vec
[-1]);
110 if(n
> options
[i
].maxargs
) {
111 error(0, "%s:%d: too many arguments to '%s'", cs
.name
, cs
.line
, vec
[-1]);
114 options
[i
].handler(n
, vec
);
119 static void option__init(void) {
120 static int have_read_options
;
122 if(!have_read_options
) {
123 have_read_options
= 1;
124 labels
= hash_new(sizeof (char *));
125 columns
= hash_new(sizeof (struct column
));
126 option__readfile("options");
130 /** @brief Set an option
131 * @param name Option name
132 * @param value Option value
134 * If the option was already set its value is replaced.
136 * @p name and @p value are copied.
138 void option_set(const char *name
, const char *value
) {
139 char *v
= xstrdup(value
);
142 hash_add(labels
, name
, &v
, HASH_INSERT_OR_REPLACE
);
145 /** @brief Get a label
146 * @param key Name of label
147 * @return Value of label (never NULL)
149 * If label images.X isn't found then the return value is
150 * <url.static>X.png, allowing url.static to be used to provide a base
151 * for all images with per-image overrides.
153 * Otherwise undefined labels expand to their last (dot-separated)
156 const char *option_label(const char *key
) {
160 if(!(label
= *(char **)hash_find(labels
, key
))) {
162 if(!strncmp(key
, "images.", 7)) {
163 static const char *url_static
;
164 /* images.X defaults to <url.static>X.png */
167 url_static
= option_label("url.static");
168 byte_xasprintf((char **)&label
, "%s%s.png", url_static
, key
+ 7);
169 } else if((label
= strrchr(key
, '.')))
170 /* X.Y defaults to Y */
173 /* otherwise default to label name */
179 /** @brief Test whether a label exists
180 * @param key Name of label
181 * @return 1 if label exists, otherwise 0
183 * Labels that don't exist still have an expansion (per option_label()
184 * documentation), and possibly not even a placeholder one.
186 int option_label_exists(const char *key
) {
188 return !!hash_find(labels
, key
);
191 /** @brief Return a column list
192 * @param name Context (playing/recent/etc)
193 * @param ncolumns Where to store column count or NULL
194 * @return Pointer to column list
196 char **option_columns(const char *name
, int *ncolumns
) {
200 c
= hash_find(columns
, name
);
203 *ncolumns
= c
->ncolumns
;