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/*
* Unicode utilities
*
* Copyright (c) 2017-2018 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef
LIBUNICODE_H
#define
LIBUNICODE_H
#include
<inttypes.h>
#define
LRE_BOOL
int
/* for documentation purposes */
/* define it to include all the unicode tables (40KB larger) */
#define
CONFIG_ALL_UNICODE
#define
LRE_CC_RES_LEN_MAX
3
typedef
enum
{
UNICODE_NFC
,
UNICODE_NFD
,
UNICODE_NFKC
,
UNICODE_NFKD
,
}
UnicodeNormalizationEnum
;
int
lre_case_conv
(
uint32_t
*
res
,
uint32_t
c
,
int
conv_type
);
LRE_BOOL
lre_is_cased
(
uint32_t
c
);
LRE_BOOL
lre_is_case_ignorable
(
uint32_t
c
);
/* char ranges */
typedef
struct
{
int
len
;
/* in points, always even */
int
size
;
uint32_t
*
points
;
/* points sorted by increasing value */
void
*
mem_opaque
;
void
*
(
*
realloc_func
)(
void
*
opaque
,
void
*
ptr
,
size_t
size
);
}
CharRange
;
typedef
enum
{
CR_OP_UNION
,
CR_OP_INTER
,
CR_OP_XOR
,
}
CharRangeOpEnum
;
void
cr_init
(
CharRange
*
cr
,
void
*
mem_opaque
,
void
*
(
*
realloc_func
)(
void
*
opaque
,
void
*
ptr
,
size_t
size
));
void
cr_free
(
CharRange
*
cr
);
int
cr_realloc
(
CharRange
*
cr
,
int
size
);
int
cr_copy
(
CharRange
*
cr
,
const
CharRange
*
cr1
);
static
inline
int
cr_add_point
(
CharRange
*
cr
,
uint32_t
v
)
{
if
(
cr
->
len
>=
cr
->
size
) {
if
(
cr_realloc
(
cr
,
cr
->
len
+
1
))
return
-1
;
}
cr
->
points
[
cr
->
len
++
]
=
v
;
return
0
;
}
static
inline
int
cr_add_interval
(
CharRange
*
cr
,
uint32_t
c1
,
uint32_t
c2
)
{
if
((
cr
->
len
+
2
)
>
cr
->
size
) {
if
(
cr_realloc
(
cr
,
cr
->
len
+
2
))
return
-1
;
}
cr
->
points
[
cr
->
len
++
]
=
c1
;
cr
->
points
[
cr
->
len
++
]
=
c2
;
return
0
;
}
int
cr_union1
(
CharRange
*
cr
,
const
uint32_t
*
b_pt
,
int
b_len
);
static
inline
int
cr_union_interval
(
CharRange
*
cr
,
uint32_t
c1
,
uint32_t
c2
)
{
uint32_t
b_pt
[
2
];
b_pt
[
0
]
=
c1
;
b_pt
[
1
]
=
c2
+
1
;
return
cr_union1
(
cr
,
b_pt
,
2
);
}
int
cr_op
(
CharRange
*
cr
,
const
uint32_t
*
a_pt
,
int
a_len
,
const
uint32_t
*
b_pt
,
int
b_len
,
int
op
);
int
cr_invert
(
CharRange
*
cr
);
#ifdef
CONFIG_ALL_UNICODE
LRE_BOOL
lre_is_id_start
(
uint32_t
c
);
LRE_BOOL
lre_is_id_continue
(
uint32_t
c
);
int
unicode_normalize
(
uint32_t
*
*
pdst
,
const
uint32_t
*
src
,
int
src_len
,
UnicodeNormalizationEnum
n_type
,
void
*
opaque
,
void
*
(
*
realloc_func
)(
void
*
opaque
,
void
*
ptr
,
size_t
size
));
/* Unicode character range functions */
int
unicode_script
(
CharRange
*
cr
,
const
char
*
script_name
,
LRE_BOOL
is_ext
);
int
unicode_general_category
(
CharRange
*
cr
,
const
char
*
gc_name
);
int
unicode_prop
(
CharRange
*
cr
,
const
char
*
prop_name
);
#endif
/* CONFIG_ALL_UNICODE */
#undef
LRE_BOOL
#endif
/* LIBUNICODE_H */
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