| /* |
| * Unicode sort key generation |
| * |
| * Copyright 2003 Dmitry Timoshkov |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include "wine/unicode.h" |
| |
| extern int get_decomposition(WCHAR src, WCHAR *dst, unsigned int dstlen); |
| extern const unsigned int collation_table[]; |
| |
| /* |
| * flags - normalization NORM_* flags |
| * |
| * FIXME: 'variable' flag not handled |
| */ |
| int wine_get_sortkey(int flags, const WCHAR *src, int srclen, char *dst, int dstlen) |
| { |
| WCHAR dummy[4]; /* no decomposition is larger than 4 chars */ |
| int key_len[4]; |
| char *key_ptr[4]; |
| const WCHAR *src_save = src; |
| int srclen_save = srclen; |
| |
| key_len[0] = key_len[1] = key_len[2] = key_len[3] = 0; |
| for (; srclen; srclen--, src++) |
| { |
| int decomposed_len = 1;/*get_decomposition(*src, dummy, 4);*/ |
| dummy[0] = *src; |
| if (decomposed_len) |
| { |
| int i; |
| for (i = 0; i < decomposed_len; i++) |
| { |
| WCHAR wch = dummy[i]; |
| unsigned int ce; |
| |
| /* tests show that win2k just ignores NORM_IGNORENONSPACE, |
| * and skips white space and punctuation characters for |
| * NORM_IGNORESYMBOLS. |
| */ |
| if ((flags & NORM_IGNORESYMBOLS) && (get_char_typeW(wch) & (C1_PUNCT | C1_SPACE))) |
| continue; |
| |
| if (flags & NORM_IGNORECASE) wch = tolowerW(wch); |
| |
| ce = collation_table[collation_table[wch >> 8] + (wch & 0xff)]; |
| if (ce != (unsigned int)-1) |
| { |
| if (ce >> 16) key_len[0] += 2; |
| if ((ce >> 8) & 0xff) key_len[1]++; |
| if ((ce >> 4) & 0x0f) key_len[2]++; |
| if (ce & 1) |
| { |
| if (wch >> 8) key_len[3]++; |
| key_len[3]++; |
| } |
| } |
| else |
| { |
| key_len[0] += 2; |
| if (wch >> 8) key_len[0]++; |
| if (wch & 0xff) key_len[0]++; |
| } |
| } |
| } |
| } |
| |
| if (!dstlen) /* compute length */ |
| /* 4 * '\1' + 1 * '\0' + key length */ |
| return key_len[0] + key_len[1] + key_len[2] + key_len[3] + 4 + 1; |
| |
| if (dstlen < key_len[0] + key_len[1] + key_len[2] + key_len[3] + 4 + 1) |
| return 0; /* overflow */ |
| |
| src = src_save; |
| srclen = srclen_save; |
| |
| key_ptr[0] = dst; |
| key_ptr[1] = key_ptr[0] + key_len[0] + 1; |
| key_ptr[2] = key_ptr[1] + key_len[1] + 1; |
| key_ptr[3] = key_ptr[2] + key_len[2] + 1; |
| |
| for (; srclen; srclen--, src++) |
| { |
| int decomposed_len = 1;/*get_decomposition(*src, dummy, 4);*/ |
| dummy[0] = *src; |
| if (decomposed_len) |
| { |
| int i; |
| for (i = 0; i < decomposed_len; i++) |
| { |
| WCHAR wch = dummy[i]; |
| unsigned int ce; |
| |
| /* tests show that win2k just ignores NORM_IGNORENONSPACE, |
| * and skips white space and punctuation characters for |
| * NORM_IGNORESYMBOLS. |
| */ |
| if ((flags & NORM_IGNORESYMBOLS) && (get_char_typeW(wch) & (C1_PUNCT | C1_SPACE))) |
| continue; |
| |
| if (flags & NORM_IGNORECASE) wch = tolowerW(wch); |
| |
| ce = collation_table[collation_table[wch >> 8] + (wch & 0xff)]; |
| if (ce != (unsigned int)-1) |
| { |
| WCHAR key; |
| if ((key = ce >> 16)) |
| { |
| *key_ptr[0]++ = key >> 8; |
| *key_ptr[0]++ = key & 0xff; |
| } |
| /* make key 1 start from 2 */ |
| if ((key = (ce >> 8) & 0xff)) *key_ptr[1]++ = key + 1; |
| /* make key 2 start from 2 */ |
| if ((key = (ce >> 4) & 0x0f)) *key_ptr[2]++ = key + 1; |
| /* key 3 is always a character code */ |
| if (ce & 1) |
| { |
| if (wch >> 8) *key_ptr[3]++ = wch >> 8; |
| if (wch & 0xff) *key_ptr[3]++ = wch & 0xff; |
| } |
| } |
| else |
| { |
| *key_ptr[0]++ = 0xff; |
| *key_ptr[0]++ = 0xfe; |
| if (wch >> 8) *key_ptr[0]++ = wch >> 8; |
| if (wch & 0xff) *key_ptr[0]++ = wch & 0xff; |
| } |
| } |
| } |
| } |
| |
| *key_ptr[0] = '\1'; |
| *key_ptr[1] = '\1'; |
| *key_ptr[2] = '\1'; |
| *key_ptr[3]++ = '\1'; |
| *key_ptr[3] = 0; |
| |
| return key_ptr[3] - dst; |
| } |
| |
| static inline int compare_unicode_weights(int flags, const WCHAR *str1, int len1, |
| const WCHAR *str2, int len2) |
| { |
| unsigned int ce1, ce2; |
| int ret; |
| |
| /* 32-bit collation element table format: |
| * unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit, |
| * case weight - high 4 bit of low 8 bit. |
| */ |
| while (len1 > 0 && len2 > 0) |
| { |
| if (flags & NORM_IGNORESYMBOLS) |
| { |
| int skip = 0; |
| /* FIXME: not tested */ |
| if (get_char_typeW(*str1) & (C1_PUNCT | C1_SPACE)) |
| { |
| str1++; |
| len1--; |
| skip = 1; |
| } |
| if (get_char_typeW(*str2) & (C1_PUNCT | C1_SPACE)) |
| { |
| str2++; |
| len2--; |
| skip = 1; |
| } |
| if (skip) continue; |
| } |
| |
| /* hyphen and apostrophe are treated differently depending on |
| * whether SORT_STRINGSORT specified or not |
| */ |
| if (!(flags & SORT_STRINGSORT)) |
| { |
| if (*str1 == '-' || *str1 == '\'') |
| { |
| if (*str2 != '-' && *str2 != '\'') |
| { |
| str1++; |
| len1--; |
| continue; |
| } |
| } |
| else if (*str2 == '-' || *str2 == '\'') |
| { |
| str2++; |
| len2--; |
| continue; |
| } |
| } |
| |
| ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)]; |
| ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)]; |
| |
| if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1) |
| ret = (ce1 >> 16) - (ce2 >> 16); |
| else |
| ret = *str1 - *str2; |
| |
| if (ret) return ret; |
| |
| str1++; |
| str2++; |
| len1--; |
| len2--; |
| } |
| return len1 - len2; |
| } |
| |
| static inline int compare_diacritic_weights(int flags, const WCHAR *str1, int len1, |
| const WCHAR *str2, int len2) |
| { |
| unsigned int ce1, ce2; |
| int ret; |
| |
| /* 32-bit collation element table format: |
| * unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit, |
| * case weight - high 4 bit of low 8 bit. |
| */ |
| while (len1 > 0 && len2 > 0) |
| { |
| if (flags & NORM_IGNORESYMBOLS) |
| { |
| int skip = 0; |
| /* FIXME: not tested */ |
| if (get_char_typeW(*str1) & (C1_PUNCT | C1_SPACE)) |
| { |
| str1++; |
| len1--; |
| skip = 1; |
| } |
| if (get_char_typeW(*str2) & (C1_PUNCT | C1_SPACE)) |
| { |
| str2++; |
| len2--; |
| skip = 1; |
| } |
| if (skip) continue; |
| } |
| |
| ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)]; |
| ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)]; |
| |
| if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1) |
| ret = ((ce1 >> 8) & 0xff) - ((ce2 >> 8) & 0xff); |
| else |
| ret = *str1 - *str2; |
| |
| if (ret) return ret; |
| |
| str1++; |
| str2++; |
| len1--; |
| len2--; |
| } |
| return len1 - len2; |
| } |
| |
| static inline int compare_case_weights(int flags, const WCHAR *str1, int len1, |
| const WCHAR *str2, int len2) |
| { |
| unsigned int ce1, ce2; |
| int ret; |
| |
| /* 32-bit collation element table format: |
| * unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit, |
| * case weight - high 4 bit of low 8 bit. |
| */ |
| while (len1 > 0 && len2 > 0) |
| { |
| if (flags & NORM_IGNORESYMBOLS) |
| { |
| int skip = 0; |
| /* FIXME: not tested */ |
| if (get_char_typeW(*str1) & (C1_PUNCT | C1_SPACE)) |
| { |
| str1++; |
| len1--; |
| skip = 1; |
| } |
| if (get_char_typeW(*str2) & (C1_PUNCT | C1_SPACE)) |
| { |
| str2++; |
| len2--; |
| skip = 1; |
| } |
| if (skip) continue; |
| } |
| |
| ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)]; |
| ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)]; |
| |
| if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1) |
| ret = ((ce1 >> 4) & 0x0f) - ((ce2 >> 4) & 0x0f); |
| else |
| ret = *str1 - *str2; |
| |
| if (ret) return ret; |
| |
| str1++; |
| str2++; |
| len1--; |
| len2--; |
| } |
| return len1 - len2; |
| } |
| |
| static inline int real_length(const WCHAR *str, int len) |
| { |
| int real_len = 0; |
| while (len-- && *str++) real_len++; |
| return real_len; |
| } |
| |
| int wine_compare_string(int flags, const WCHAR *str1, int len1, |
| const WCHAR *str2, int len2) |
| { |
| int ret; |
| |
| len1 = real_length(str1, len1); |
| len2 = real_length(str2, len2); |
| |
| ret = compare_unicode_weights(flags, str1, len1, str2, len2); |
| if (!ret) |
| { |
| if (!(flags & NORM_IGNORENONSPACE)) |
| ret = compare_diacritic_weights(flags, str1, len1, str2, len2); |
| if (!ret && !(flags & NORM_IGNORECASE)) |
| ret = compare_case_weights(flags, str1, len1, str2, len2); |
| } |
| return ret; |
| } |
