2 * Copyright (c) 2004 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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43 #include "normalize_table.h"
46 translation_cmp(const void *key, const void *data)
48 const struct translation *t1 = (const struct translation *)key;
49 const struct translation *t2 = (const struct translation *)data;
51 return t1->key - t2->key;
54 enum { s_base = 0xAC00};
55 enum { s_count = 11172};
56 enum { l_base = 0x1100};
58 enum { v_base = 0x1161};
60 enum { t_base = 0x11A7};
62 enum { n_count = v_count * t_count};
65 hangul_decomp(const uint32_t *in, size_t in_len,
66 uint32_t *out, size_t *out_len)
73 if (u < s_base || u >= s_base + s_count)
76 l = l_base + s_index / n_count;
77 v = v_base + (s_index % n_count) / t_count;
78 t = t_base + s_index % t_count;
83 return WIND_ERR_OVERRUN;
93 hangul_composition(const uint32_t *in, size_t in_len)
97 if (in[0] >= l_base && in[0] < l_base + l_count) {
98 unsigned l_index = in[0] - l_base;
101 if (in[1] < v_base || in[1] >= v_base + v_count)
103 v_index = in[1] - v_base;
104 return (l_index * v_count + v_index) * t_count + s_base;
105 } else if (in[0] >= s_base && in[0] < s_base + s_count) {
106 unsigned s_index = in[0] - s_base;
109 if (s_index % t_count != 0)
111 if (in[1] < t_base || in[1] >= t_base + t_count)
113 t_index = in[1] - t_base;
114 return in[0] + t_index;
120 compat_decomp(const uint32_t *in, size_t in_len,
121 uint32_t *out, size_t *out_len)
126 for (i = 0; i < in_len; ++i) {
127 struct translation ts = {in[i]};
128 size_t sub_len = *out_len - o;
131 ret = hangul_decomp(in + i, in_len - i,
134 if (ret == WIND_ERR_OVERRUN)
138 void *s = bsearch(&ts,
139 _wind_normalize_table,
140 _wind_normalize_table_size,
141 sizeof(_wind_normalize_table[0]),
144 const struct translation *t = (const struct translation *)s;
146 ret = compat_decomp(_wind_normalize_val_table + t->val_offset,
154 return WIND_ERR_OVERRUN;
165 cc_cmp(const void *a, const void *b)
167 const uint32_t *ua = (const uint32_t *)a;
168 const uint32_t *ub = (const uint32_t *)b;
170 return _wind_combining_class(*ua) - _wind_combining_class(*ub);
174 canonical_reorder(uint32_t *tmp, size_t tmp_len)
178 for (i = 0; i < tmp_len; ++i) {
179 int cc = _wind_combining_class(tmp[i]);
183 j < tmp_len && _wind_combining_class(tmp[j]);
186 qsort(&tmp[i], j - i, sizeof(unsigned),
194 find_composition(const uint32_t *in, unsigned in_len)
196 unsigned short canon_index = 0;
200 cur = hangul_composition(in, in_len);
205 const struct canon_node *c = &_wind_canon_table[canon_index];
215 if (i < c->next_start || i >= c->next_end)
219 _wind_canon_next_table[c->next_offset + i - c->next_start];
220 if (canon_index != 0) {
221 cur = (cur << 4) & 0xFFFFF;
224 } while (canon_index != 0);
229 combine(const uint32_t *in, size_t in_len,
230 uint32_t *out, size_t *out_len)
237 for (i = 0; i < in_len;) {
238 while (i < in_len && _wind_combining_class(in[i]) != 0) {
243 return WIND_ERR_OVERRUN;
253 v[0] = out[ostarter];
256 cc = _wind_combining_class(in[i]);
257 if (old_cc != cc && (comb = find_composition(v, 2))) {
258 out[ostarter] = comb;
259 } else if (cc == 0) {
263 return WIND_ERR_OVERRUN;
276 _wind_stringprep_normalize(const uint32_t *in, size_t in_len,
277 uint32_t *out, size_t *out_len)
283 tmp_len = in_len * 4;
284 if (tmp_len < MAX_LENGTH_CANON)
285 tmp_len = MAX_LENGTH_CANON;
286 tmp = malloc(tmp_len * sizeof(uint32_t));
290 ret = compat_decomp(in, in_len, tmp, &tmp_len);
295 canonical_reorder(tmp, tmp_len);
296 ret = combine(tmp, tmp_len, out, out_len);