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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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