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| ac5ea531 |
1 | |
| 2 | #include "EXTERN.h" |
| 3 | #include "perl.h" |
| 4 | #include "XSUB.h" |
| 5 | |
| 6 | /* These 5 files are prepared by mkheader */ |
| 7 | #include "unfcmb.h" |
| 8 | #include "unfcan.h" |
| 9 | #include "unfcpt.h" |
| 10 | #include "unfcmp.h" |
| 11 | #include "unfexc.h" |
| 12 | |
| 13 | /* Perl 5.6.1 ? */ |
| 14 | #ifndef uvuni_to_utf8 |
| 15 | #define uvuni_to_utf8 uv_to_utf8 |
| 16 | #endif /* uvuni_to_utf8 */ |
| 17 | |
| 18 | /* Perl 5.6.1 ? */ |
| 19 | #ifndef utf8n_to_uvchr |
| 20 | #define utf8n_to_uvchr utf8_to_uv |
| 21 | #endif /* utf8n_to_uvchr */ |
| 22 | |
| 23 | /* At present, char > 0x10ffff are unaffected without complaint, right? */ |
| 24 | #define VALID_UTF_MAX (0x10ffff) |
| 25 | #define OVER_UTF_MAX(uv) (VALID_UTF_MAX < (uv)) |
| 26 | |
| 27 | /* HANGUL_H */ |
| 28 | #define Hangul_SBase 0xAC00 |
| 29 | #define Hangul_SFinal 0xD7A3 |
| 30 | #define Hangul_SCount 11172 |
| 31 | |
| 32 | #define Hangul_NCount 588 |
| 33 | |
| 34 | #define Hangul_LBase 0x1100 |
| 35 | #define Hangul_LFinal 0x1112 |
| 36 | #define Hangul_LCount 19 |
| 37 | |
| 38 | #define Hangul_VBase 0x1161 |
| 39 | #define Hangul_VFinal 0x1175 |
| 40 | #define Hangul_VCount 21 |
| 41 | |
| 42 | #define Hangul_TBase 0x11A7 |
| 43 | #define Hangul_TFinal 0x11C2 |
| 44 | #define Hangul_TCount 28 |
| 45 | |
| 46 | #define Hangul_IsS(u) ((Hangul_SBase <= (u)) && ((u) <= Hangul_SFinal)) |
| 47 | #define Hangul_IsN(u) (! (((u) - Hangul_SBase) % Hangul_TCount)) |
| 48 | #define Hangul_IsLV(u) (Hangul_IsS(u) && Hangul_IsN(u)) |
| 49 | #define Hangul_IsL(u) ((Hangul_LBase <= (u)) && ((u) <= Hangul_LFinal)) |
| 50 | #define Hangul_IsV(u) ((Hangul_VBase <= (u)) && ((u) <= Hangul_VFinal)) |
| 51 | #define Hangul_IsT(u) ((Hangul_TBase < (u)) && ((u) <= Hangul_TFinal)) |
| 52 | /* HANGUL_H */ |
| 53 | |
| 54 | /* this is used for canonical ordering of combining characters (c.c.). */ |
| 55 | typedef struct { |
| 56 | U8 cc; /* combining class */ |
| 57 | UV uv; /* codepoint */ |
| 58 | STRLEN pos; /* position */ |
| 59 | } UNF_cc; |
| 60 | |
| 61 | int compare_cc(const void *a, const void *b) |
| 62 | { |
| 63 | int ret_cc; |
| 64 | ret_cc = (*(UNF_cc*)a).cc - (*(UNF_cc*)b).cc; |
| 65 | if(ret_cc) return ret_cc; |
| 66 | return (*(UNF_cc*)a).pos - (*(UNF_cc*)b).pos; |
| 67 | } |
| 68 | |
| 69 | U8* dec_canonical (UV uv) |
| 70 | { |
| 71 | U8 ***plane, **row; |
| 72 | if(OVER_UTF_MAX(uv)) return NULL; |
| 73 | plane = (U8***)UNF_canon[uv >> 16]; |
| 74 | if(! plane) return NULL; |
| 75 | row = plane[(uv >> 8) & 0xff]; |
| 76 | return row ? row[uv & 0xff] : NULL; |
| 77 | } |
| 78 | |
| 79 | U8* dec_compat (UV uv) |
| 80 | { |
| 81 | U8 ***plane, **row; |
| 82 | if(OVER_UTF_MAX(uv)) return NULL; |
| 83 | plane = (U8***)UNF_compat[uv >> 16]; |
| 84 | if(! plane) return NULL; |
| 85 | row = plane[(uv >> 8) & 0xff]; |
| 86 | return row ? row[uv & 0xff] : NULL; |
| 87 | } |
| 88 | |
| 89 | UV getComposite (UV uv, UV uv2) |
| 90 | { |
| 91 | UNF_complist ***plane, **row, *cell, *i; |
| 92 | |
| 93 | if(! uv2 || OVER_UTF_MAX(uv) || OVER_UTF_MAX(uv2)) return 0; |
| 94 | |
| 95 | if(Hangul_IsL(uv) && Hangul_IsV(uv2)) { |
| 96 | uv -= Hangul_LBase; /* lindex */ |
| 97 | uv2 -= Hangul_VBase; /* vindex */ |
| 98 | return(Hangul_SBase + (uv * Hangul_VCount + uv2) * Hangul_TCount); |
| 99 | } |
| 100 | if(Hangul_IsLV(uv) && Hangul_IsT(uv2)) { |
| 101 | uv2 -= Hangul_TBase; /* tindex */ |
| 102 | return (uv + uv2); |
| 103 | } |
| 104 | plane = UNF_compos[uv >> 16]; |
| 105 | if(! plane) return 0; |
| 106 | row = plane[(uv >> 8) & 0xff]; |
| 107 | if(! row) return 0; |
| 108 | cell = row[uv & 0xff]; |
| 109 | if(! cell) return 0; |
| 110 | for(i = cell; i->nextchar; i++) { |
| 111 | if(uv2 == i->nextchar) return i->composite; |
| 112 | } |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | U8 getCombinClass (UV uv) |
| 117 | { |
| 118 | U8 **plane, *row; |
| 119 | if(OVER_UTF_MAX(uv)) return 0; |
| 120 | plane = (U8**)UNF_combin[uv >> 16]; |
| 121 | if(! plane) return 0; |
| 122 | row = plane[(uv >> 8) & 0xff]; |
| 123 | return row ? row[uv & 0xff] : 0; |
| 124 | } |
| 125 | |
| 126 | void sv_cat_decompHangul (SV* sv, UV uv) |
| 127 | { |
| 128 | UV sindex, lindex, vindex, tindex; |
| 129 | U8 *t, temp[3 * UTF8_MAXLEN + 1]; |
| 130 | |
| 131 | if(! Hangul_IsS(uv)) return; |
| 132 | |
| 133 | sindex = uv - Hangul_SBase; |
| 134 | lindex = sindex / Hangul_NCount; |
| 135 | vindex = (sindex % Hangul_NCount) / Hangul_TCount; |
| 136 | tindex = sindex % Hangul_TCount; |
| 137 | |
| 138 | t = temp; |
| 139 | t = uvuni_to_utf8(t, (lindex + Hangul_LBase)); |
| 140 | t = uvuni_to_utf8(t, (vindex + Hangul_VBase)); |
| 141 | if (tindex) t = uvuni_to_utf8(t, (tindex + Hangul_TBase)); |
| 142 | *t = '\0'; |
| 143 | sv_catpvn(sv, (char *)temp, strlen((char *)temp)); |
| 144 | } |
| 145 | |
| 146 | MODULE = Unicode::Normalize PACKAGE = Unicode::Normalize |
| 147 | |
| 148 | |
| 149 | SV* |
| 150 | decompose(arg, compat) |
| 151 | SV * arg |
| 152 | SV * compat |
| 153 | PROTOTYPE: $ |
| 154 | PREINIT: |
| 155 | SV *src, *dst; |
| 156 | STRLEN srclen, dstlen, retlen; |
| 157 | U8 *s, *e, *p, *d, *r; |
| 158 | UV uv; |
| 159 | bool iscompat; |
| 160 | CODE: |
| 161 | if(SvUTF8(arg)) { |
| 162 | src = arg; |
| 163 | } else { |
| 164 | src = sv_mortalcopy(arg); |
| 165 | sv_utf8_upgrade(src); |
| 166 | } |
| 167 | |
| 168 | iscompat = SvTRUE(compat); |
| 169 | |
| 170 | dst = newSV(1); |
| 171 | (void)SvPOK_only(dst); |
| 172 | SvUTF8_on(dst); |
| 173 | |
| 174 | s = (U8*)SvPV(src,srclen); |
| 175 | e = s + srclen; |
| 176 | for(p = s; p < e;){ |
| 177 | uv = utf8n_to_uvchr(p, e - p, &retlen, 0); |
| 178 | p += retlen; |
| 179 | if(Hangul_IsS(uv)) sv_cat_decompHangul(dst, uv); |
| 180 | else { |
| 181 | r = iscompat ? dec_compat(uv) : dec_canonical(uv); |
| 182 | if(r) sv_catpv(dst, (char *)r); |
| 183 | else sv_catpvn(dst, (char *)p - retlen, retlen); |
| 184 | } |
| 185 | } |
| 186 | RETVAL = dst; |
| 187 | OUTPUT: |
| 188 | RETVAL |
| 189 | |
| 190 | |
| 191 | |
| 192 | SV* |
| 193 | reorder(arg) |
| 194 | SV * arg |
| 195 | PROTOTYPE: $ |
| 196 | PREINIT: |
| 197 | SV *src; |
| 198 | STRLEN srclen, retlen, stk_cc_max; |
| 199 | U8 *s, *e, *p, curCC; |
| 200 | UV uv; |
| 201 | UNF_cc * stk_cc; |
| 202 | CODE: |
| 203 | src = newSVsv(arg); |
| 204 | if(! SvUTF8(arg)) sv_utf8_upgrade(src); |
| 205 | |
| 206 | stk_cc_max = 10; /* enough as an initial value? */ |
| 207 | New(0, stk_cc, stk_cc_max, UNF_cc); |
| 208 | |
| 209 | s = (U8*)SvPV(src,srclen); |
| 210 | e = s + srclen; |
| 211 | for(p = s; p < e;){ |
| 212 | U8 *cc_in; |
| 213 | STRLEN cc_len, cc_iter, cc_pos; |
| 214 | |
| 215 | uv = utf8n_to_uvchr(p, e - p, &retlen, 0); |
| 216 | p += retlen; |
| 217 | cc_pos = 0; |
| 218 | curCC = getCombinClass(uv); |
| 219 | if(! (curCC && p < e)) continue; else cc_in = p - retlen; |
| 220 | |
| 221 | stk_cc[cc_pos].cc = curCC; |
| 222 | stk_cc[cc_pos].uv = uv; |
| 223 | stk_cc[cc_pos].pos = cc_pos; |
| 224 | |
| 225 | while(p < e) { |
| 226 | uv = utf8n_to_uvchr(p, e - p, &retlen, 0); |
| 227 | curCC = getCombinClass(uv); |
| 228 | if(!curCC) break; |
| 229 | p += retlen; |
| 230 | cc_pos++; |
| 231 | if(stk_cc_max <= cc_pos) { /* extend if need */ |
| 232 | stk_cc_max = cc_pos + 1; |
| 233 | Renew(stk_cc, stk_cc_max, UNF_cc); |
| 234 | } |
| 235 | stk_cc[cc_pos].cc = curCC; |
| 236 | stk_cc[cc_pos].uv = uv; |
| 237 | stk_cc[cc_pos].pos = cc_pos; |
| 238 | } |
| 239 | |
| 240 | /* only one c.c. in cc_len from cc_in, no need of reordering */ |
| 241 | if(!cc_pos) continue; |
| 242 | |
| 243 | qsort((void*)stk_cc, cc_pos + 1, sizeof(UNF_cc), compare_cc); |
| 244 | |
| 245 | cc_len = p - cc_in; |
| 246 | p = cc_in; |
| 247 | for(cc_iter = 0; cc_iter <= cc_pos; cc_iter++) { |
| 248 | p = uvuni_to_utf8(p, stk_cc[cc_iter].uv); |
| 249 | } |
| 250 | } |
| 251 | Safefree(stk_cc); |
| 252 | RETVAL = src; |
| 253 | OUTPUT: |
| 254 | RETVAL |
| 255 | |
| 256 | |
| 257 | |
| 258 | void |
| 259 | compose(arg) |
| 260 | SV * arg |
| 261 | PROTOTYPE: $ |
| 262 | PREINIT: |
| 263 | SV *src, *dst, *tmp; |
| 264 | U8 *s, *p, *e, *d, *t, *tmp_start, curCC, preCC; |
| 265 | UV uv, uvS, uvComp; |
| 266 | STRLEN srclen, dstlen, tmplen, dstcur, retlen; |
| 267 | bool beginning = TRUE; |
| 268 | PPCODE: |
| 269 | if(SvUTF8(arg)) { |
| 270 | src = arg; |
| 271 | } else { |
| 272 | src = sv_mortalcopy(arg); |
| 273 | sv_utf8_upgrade(src); |
| 274 | } |
| 275 | s = (U8*)SvPV(src, srclen); |
| 276 | e = s + srclen; |
| 277 | dstlen = srclen + 1; /* equal or shorter, XXX */ |
| 278 | dst = sv_2mortal(newSV(dstlen)); |
| 279 | (void)SvPOK_only(dst); |
| 280 | SvUTF8_on(dst); |
| 281 | d = (U8*)SvPVX(dst); |
| 282 | |
| 283 | /* for uncomposed combining char */ |
| 284 | tmp = sv_2mortal(newSV(dstlen)); |
| 285 | (void)SvPOK_only(tmp); |
| 286 | SvUTF8_on(tmp); |
| 287 | |
| 288 | for(p = s; p < e;){ |
| 289 | if(beginning) { |
| 290 | uvS = utf8n_to_uvchr(p, e - p, &retlen, 0); |
| 291 | p += retlen; |
| 292 | |
| 293 | if (getCombinClass(uvS)){ /* no Starter found yet */ |
| 294 | d = uvuni_to_utf8(d, uvS); |
| 295 | continue; |
| 296 | } |
| 297 | beginning = FALSE; |
| 298 | } |
| 299 | |
| 300 | /* Starter */ |
| 301 | t = tmp_start = (U8*)SvPVX(tmp); |
| 302 | preCC = 0; |
| 303 | |
| 304 | /* to the next Starter */ |
| 305 | while(p < e) { |
| 306 | uv = utf8n_to_uvchr(p, e - p, &retlen, 0); |
| 307 | p += retlen; |
| 308 | curCC = getCombinClass(uv); |
| 309 | |
| 310 | if(preCC && preCC == curCC) { |
| 311 | preCC = curCC; |
| 312 | t = uvuni_to_utf8(t, uv); |
| 313 | } else { |
| 314 | uvComp = getComposite(uvS, uv); |
| 315 | |
| 316 | /* S + C + S => S-S + C would be also blocked. */ |
| 317 | if( uvComp && ! getExclusion(uvComp) && preCC <= curCC) |
| 318 | { |
| 319 | /* preCC not changed to curCC */ |
| 320 | uvS = uvComp; |
| 321 | } else if (! curCC && p < e) { /* blocked */ |
| 322 | break; |
| 323 | } else { |
| 324 | preCC = curCC; |
| 325 | t = uvuni_to_utf8(t, uv); |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | d = uvuni_to_utf8(d, uvS); /* composed char */ |
| 330 | if(tmplen = t - tmp_start) { /* uncomposed combining char */ |
| 331 | t = (U8*)SvPVX(tmp); |
| 332 | while(tmplen--) *d++ = *t++; |
| 333 | } |
| 334 | uvS = uv; |
| 335 | } /* for */ |
| 336 | dstcur = d - (U8*)SvPVX(dst); |
| 337 | SvCUR_set(dst, dstcur); |
| 338 | XPUSHs(dst); |
| 339 | |
| 340 | |
| 341 | |
| 342 | U8 |
| 343 | getCombinClass(uv) |
| 344 | UV uv |
| 345 | |
| 346 | bool |
| 347 | getExclusion(uv) |
| 348 | UV uv |
| 349 | |
| 350 | UV |
| 351 | getComposite(uv, uv2) |
| 352 | UV uv |
| 353 | UV uv2 |
| 354 | |
| 355 | SV* |
| 356 | getCanon(uv) |
| 357 | UV uv |
| 358 | PROTOTYPE: $ |
| 359 | ALIAS: |
| 360 | getCompat = 1 |
| 361 | PREINIT: |
| 362 | U8 * rstr; |
| 363 | CODE: |
| 364 | if(Hangul_IsS(uv)) { |
| 365 | SV * dst; |
| 366 | dst = newSV(1); |
| 367 | (void)SvPOK_only(dst); |
| 368 | sv_cat_decompHangul(dst, uv); |
| 369 | RETVAL = dst; |
| 370 | } else { |
| 371 | rstr = ix ? dec_compat(uv) : dec_canonical(uv); |
| 372 | if(!rstr) XSRETURN_UNDEF; |
| 373 | RETVAL = newSVpvn((char *)rstr, strlen((char *)rstr)); |
| 374 | } |
| 375 | SvUTF8_on(RETVAL); |
| 376 | OUTPUT: |
| 377 | RETVAL |
| 378 | |
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