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