1/*
2 * fontconfig/src/fcrange.c
3 *
4 * Copyright © 2002 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
27
28FcRange *
29FcRangeCreateDouble (double begin, double end)
30{
31    FcRange *ret = malloc (sizeof (FcRange));
32
33    if (ret)
34    {
35	ret->begin = begin;
36	ret->end = end;
37    }
38
39    return ret;
40}
41
42FcRange *
43FcRangeCreateInteger (FcChar32 begin, FcChar32 end)
44{
45    FcRange *ret = malloc (sizeof (FcRange));
46
47    if (ret)
48    {
49	ret->begin = begin;
50	ret->end = end;
51    }
52
53    return ret;
54}
55
56void
57FcRangeDestroy (FcRange *range)
58{
59    if (range)
60	free (range);
61}
62
63FcRange *
64FcRangeCopy (const FcRange *range)
65{
66    return FcRangeCreateDouble (range->begin, range->end);
67}
68
69FcBool
70FcRangeGetDouble(const FcRange *range, double *begin, double *end)
71{
72    if (!range)
73	return FcFalse;
74    if (begin)
75	*begin = range->begin;
76    if (end)
77	*end = range->end;
78
79    return FcTrue;
80}
81
82FcRange *
83FcRangePromote (double v, FcValuePromotionBuffer *vbuf)
84{
85    typedef struct {
86	FcRange	r;
87    } FcRangePromotionBuffer;
88    FcRangePromotionBuffer *buf = (FcRangePromotionBuffer *) vbuf;
89
90    FC_ASSERT_STATIC (sizeof (FcRangePromotionBuffer) <= sizeof (FcValuePromotionBuffer));
91    buf->r.begin = v;
92    buf->r.end = v;
93
94    return &buf->r;
95}
96
97FcBool
98FcRangeIsInRange (const FcRange *a, const FcRange *b)
99{
100    return a->begin >= b->begin && a->end <= b->end;
101}
102
103FcBool
104FcRangeCompare (FcOp op, const FcRange *a, const FcRange *b)
105{
106    switch ((int) op) {
107    case FcOpEqual:
108	return a->begin == b->begin && a->end == b->end;
109    case FcOpContains:
110    case FcOpListing:
111	return FcRangeIsInRange (a, b);
112    case FcOpNotEqual:
113	return a->begin != b->begin || a->end != b->end;
114    case FcOpNotContains:
115	return !FcRangeIsInRange (a, b);
116    case FcOpLess:
117	return a->end < b->begin;
118    case FcOpLessEqual:
119	return a->end <= b->begin;
120    case FcOpMore:
121	return a->begin > b->end;
122    case FcOpMoreEqual:
123	return a->begin >= b->end;
124    default:
125	break;
126    }
127    return FcFalse;
128}
129
130FcChar32
131FcRangeHash (const FcRange *r)
132{
133    int b = (int) (r->begin * 100);
134    int e = (int) (r->end * 100);
135
136    return b ^ (b << 1) ^ (e << 9);
137}
138
139FcBool
140FcRangeSerializeAlloc (FcSerialize *serialize, const FcRange *r)
141{
142    if (!FcSerializeAlloc (serialize, r, sizeof (FcRange)))
143	return FcFalse;
144    return FcTrue;
145}
146
147FcRange *
148FcRangeSerialize (FcSerialize *serialize, const FcRange *r)
149{
150    FcRange *r_serialize = FcSerializePtr (serialize, r);
151
152    if (!r_serialize)
153	return NULL;
154    memcpy (r_serialize, r, sizeof (FcRange));
155
156    return r_serialize;
157}
158
159#define __fcrange__
160#include "fcaliastail.h"
161#undef __fcrange__
162