1/*
2
3Copyright 1991, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25*/
26
27/*
28 * Author:  Keith Packard, MIT X Consortium
29 */
30
31#ifdef HAVE_CONFIG_H
32#include <config.h>
33#endif
34#include <X11/fonts/fntfilst.h>
35extern void ErrorF(const char *f, ...);
36
37static FontRenderersRec	renderers;
38
39/*
40 * XXX Maybe should allow unregistering renders. For now, just clear the
41 * list at each new generation.
42 */
43extern unsigned long __GetServerGeneration(void);
44static unsigned long rendererGeneration = 0;
45
46Bool
47FontFileRegisterRenderer (FontRendererPtr renderer)
48{
49    return FontFilePriorityRegisterRenderer(renderer, 0);
50}
51
52Bool
53FontFilePriorityRegisterRenderer (FontRendererPtr renderer, int priority)
54{
55    int		    i;
56    struct _FontRenderersElement *new;
57
58    if (rendererGeneration != __GetServerGeneration()) {
59	rendererGeneration = __GetServerGeneration();
60	renderers.number = 0;
61	if (renderers.renderers)
62	   free(renderers.renderers);
63	renderers.renderers = NULL;
64    }
65
66    for (i = 0; i < renderers.number; i++) {
67	if (!strcasecmp (renderers.renderers[i].renderer->fileSuffix,
68                         renderer->fileSuffix)) {
69            if(renderers.renderers[i].priority >= priority) {
70                if(renderers.renderers[i].priority == priority) {
71                    if (rendererGeneration == 1)
72                        ErrorF("Warning: font renderer for \"%s\" "
73                               "already registered at priority %d\n",
74                               renderer->fileSuffix, priority);
75                }
76                return TRUE;
77            } else {
78                break;
79            }
80        }
81    }
82
83    if(i >= renderers.number) {
84        new = realloc (renderers.renderers, sizeof(*new) * (i + 1));
85        if (!new)
86            return FALSE;
87        renderers.renderers = new;
88        renderers.number = i + 1;
89    }
90    renderer->number = i;
91    renderers.renderers[i].renderer = renderer;
92    renderers.renderers[i].priority = priority;
93    return TRUE;
94}
95
96FontRendererPtr
97FontFileMatchRenderer (char *fileName)
98{
99    int			i;
100    int			fileLen;
101    FontRendererPtr	r;
102
103    fileLen = strlen (fileName);
104    for (i = 0; i < renderers.number; i++)
105    {
106	r = renderers.renderers[i].renderer;
107	if (fileLen >= r->fileSuffixLen &&
108	    !strcasecmp (fileName + fileLen - r->fileSuffixLen, r->fileSuffix))
109	{
110	    return r;
111	}
112    }
113    return 0;
114}
115