fcinit.c revision 6338c9e2 
1/*
2 * fontconfig/src/fcinit.c
3 *
4 * Copyright © 2001 Keith Packard
5 *
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that
9 * copyright notice and this permission notice appear in supporting
10 * documentation, and that the name of the author(s) not be used in
11 * advertising or publicity pertaining to distribution of the software without
12 * specific, written prior permission.  The authors make no
13 * representations about the suitability of this software for any purpose.  It
14 * is provided "as is" without express or implied warranty.
15 *
16 * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
22 * PERFORMANCE OF THIS SOFTWARE.
23 */
24
25#include "fcint.h"
26#include <stdlib.h>
27
28#if defined(FC_ATOMIC_INT_NIL)
29#warning Could not find any system to define atomic_int macros, library may NOT be thread-safe.
30#endif
31#if defined(FC_MUTEX_IMPL_NIL)
32#warning Could not find any system to define mutex macros, library may NOT be thread-safe.
33#endif
34#if defined(FC_ATOMIC_INT_NIL) || defined(FC_MUTEX_IMPL_NIL)
35#warning To suppress these warnings, define FC_NO_MT.
36#endif
37
38static FcConfig *
39FcInitFallbackConfig (void)
40{
41    FcConfig	*config;
42
43    config = FcConfigCreate ();
44    if (!config)
45	goto bail0;
46    if (!FcConfigAddDir (config, (FcChar8 *) FC_DEFAULT_FONTS))
47	goto bail1;
48    if (!FcConfigAddCacheDir (config, (FcChar8 *) FC_CACHEDIR))
49	goto bail1;
50    return config;
51
52bail1:
53    FcConfigDestroy (config);
54bail0:
55    return 0;
56}
57
58int
59FcGetVersion (void)
60{
61    return FC_VERSION;
62}
63
64/*
65 * Load the configuration files
66 */
67FcConfig *
68FcInitLoadOwnConfig (FcConfig *config)
69{
70    if (!config)
71    {
72	config = FcConfigCreate ();
73	if (!config)
74	    return NULL;
75    }
76
77    FcInitDebug ();
78
79    if (!FcConfigParseAndLoad (config, 0, FcTrue))
80    {
81	FcConfigDestroy (config);
82	return FcInitFallbackConfig ();
83    }
84
85    if (config->cacheDirs && config->cacheDirs->num == 0)
86    {
87	FcChar8 *prefix, *p;
88	size_t plen;
89
90	fprintf (stderr,
91		 "Fontconfig warning: no <cachedir> elements found. Check configuration.\n");
92	fprintf (stderr,
93		 "Fontconfig warning: adding <cachedir>%s</cachedir>\n",
94		 FC_CACHEDIR);
95	prefix = FcConfigXdgCacheHome ();
96	if (!prefix)
97	    goto bail;
98	plen = strlen ((const char *)prefix);
99	p = realloc (prefix, plen + 12);
100	if (!p)
101	    goto bail;
102	prefix = p;
103	memcpy (&prefix[plen], FC_DIR_SEPARATOR_S "fontconfig", 11);
104	prefix[plen + 11] = 0;
105	fprintf (stderr,
106		 "Fontconfig warning: adding <cachedir prefix=\"xdg\">fontconfig</cachedir>\n");
107
108	if (!FcConfigAddCacheDir (config, (FcChar8 *) FC_CACHEDIR) ||
109	    !FcConfigAddCacheDir (config, (FcChar8 *) prefix))
110	{
111	  bail:
112	    fprintf (stderr,
113		     "Fontconfig error: out of memory");
114	    if (prefix)
115		FcStrFree (prefix);
116	    FcConfigDestroy (config);
117	    return FcInitFallbackConfig ();
118	}
119	FcStrFree (prefix);
120    }
121
122    return config;
123}
124
125FcConfig *
126FcInitLoadConfig (void)
127{
128    return FcInitLoadOwnConfig (NULL);
129}
130
131/*
132 * Load the configuration files and scan for available fonts
133 */
134FcConfig *
135FcInitLoadOwnConfigAndFonts (FcConfig *config)
136{
137    config = FcInitLoadOwnConfig (config);
138    if (!config)
139	return 0;
140    if (!FcConfigBuildFonts (config))
141    {
142	FcConfigDestroy (config);
143	return 0;
144    }
145    return config;
146}
147
148FcConfig *
149FcInitLoadConfigAndFonts (void)
150{
151    return FcInitLoadOwnConfigAndFonts (NULL);
152}
153
154/*
155 * Initialize the default library configuration
156 */
157FcBool
158FcInit (void)
159{
160    return FcConfigInit ();
161}
162
163/*
164 * Free all library-allocated data structures.
165 */
166void
167FcFini (void)
168{
169    FcConfigFini ();
170    FcCacheFini ();
171    FcDefaultFini ();
172}
173
174/*
175 * Reread the configuration and available font lists
176 */
177FcBool
178FcInitReinitialize (void)
179{
180    FcConfig	*config;
181
182    config = FcInitLoadConfigAndFonts ();
183    if (!config)
184	return FcFalse;
185    return FcConfigSetCurrent (config);
186}
187
188FcBool
189FcInitBringUptoDate (void)
190{
191    FcConfig	*config = FcConfigGetCurrent ();
192    time_t	now;
193
194    /*
195     * rescanInterval == 0 disables automatic up to date
196     */
197    if (config->rescanInterval == 0)
198	return FcTrue;
199    /*
200     * Check no more often than rescanInterval seconds
201     */
202    now = time (0);
203    if (config->rescanTime + config->rescanInterval - now > 0)
204	return FcTrue;
205    /*
206     * If up to date, don't reload configuration
207     */
208    if (FcConfigUptoDate (0))
209	return FcTrue;
210    return FcInitReinitialize ();
211}
212
213#define __fcinit__
214#include "fcaliastail.h"
215#undef __fcinit__
216