/* Copyright (c) 2006-2020 Chung, Hyung-Hwan. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* tre-match-ut.h - TRE matcher helper definitions This is the license, copyright notice, and disclaimer for TRE, a regex matching package (library and tools) with support for approximate matching. Copyright (c) 2001-2009 Ville Laurikari All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifdef TRE_WCHAR #ifdef TRE_MULTIBYTE /* Wide character and multibyte support. */ #define GET_NEXT_WCHAR() \ do { \ prev_c = next_c; \ if (type == STR_BYTE) \ { \ pos++; \ if (len >= 0 && pos >= len) \ next_c = '\0'; \ else \ next_c = (unsigned char)(*str_byte++); \ } \ else if (type == STR_WIDE) \ { \ pos++; \ if (len >= 0 && pos >= len) \ next_c = '\0'; \ else \ next_c = *str_wide++; \ } \ else if (type == STR_MBS) \ { \ pos += pos_add_next; \ if (str_byte == NULL) \ next_c = '\0'; \ else \ { \ size_t w; \ int max; \ if (len >= 0) \ max = len - pos; \ else \ max = 32; \ if (max <= 0) \ { \ next_c = '\0'; \ pos_add_next = 1; \ } \ else \ { \ w = hawk_mbrtowc(str_byte, (size_t)max, &next_c, &mbstate); \ if (w <= 0 || w > max) \ return REG_NOMATCH; \ if (next_c == '\0' && len >= 0) \ { \ pos_add_next = 1; \ next_c = 0; \ str_byte++; \ } \ else \ { \ pos_add_next = w; \ str_byte += w; \ } \ } \ } \ } \ } while(/*CONSTCOND*/0) #else /* !TRE_MULTIBYTE */ /* Wide character support, no multibyte support. */ #define GET_NEXT_WCHAR() \ do { \ prev_c = next_c; \ if (type == STR_BYTE) \ { \ pos++; \ if (len >= 0 && pos >= len) next_c = '\0'; \ else next_c = (unsigned char)(*str_byte++); \ } \ else if (type == STR_WIDE) \ { \ pos++; \ if (len >= 0 && pos >= len) next_c = '\0'; \ else next_c = *str_wide++; \ } \ } while(/*CONSTCOND*/0) #endif /* !TRE_MULTIBYTE */ #else /* !TRE_WCHAR */ /* No wide character or multibyte support. */ #define GET_NEXT_WCHAR() \ do { \ prev_c = next_c; \ if (type == STR_BYTE) \ { \ pos++; \ if (len >= 0 && pos >= len) next_c = '\0'; \ else next_c = (unsigned char)(*str_byte++); \ } \ } while(/*CONSTCOND*/0) #endif /* !TRE_WCHAR */ #define IS_WORD_CHAR(c) ((c) == HAWK_T('_') || tre_isalnum(c)) #define CHECK_ASSERTIONS(assertions) \ (((assertions & ASSERT_AT_BOL) \ && (pos > 0 || reg_notbol) \ && (prev_c != HAWK_T('\n') || !reg_newline)) \ || ((assertions & ASSERT_AT_EOL) \ && (next_c != HAWK_T('\0') || reg_noteol) \ && (next_c != HAWK_T('\n') || !reg_newline)) \ || ((assertions & ASSERT_AT_BOW) \ && (IS_WORD_CHAR(prev_c) || !IS_WORD_CHAR(next_c))) \ || ((assertions & ASSERT_AT_EOW) \ && (!IS_WORD_CHAR(prev_c) || IS_WORD_CHAR(next_c))) \ || ((assertions & ASSERT_AT_WB) \ && (pos != 0 && next_c != HAWK_T('\0') \ && IS_WORD_CHAR(prev_c) == IS_WORD_CHAR(next_c))) \ || ((assertions & ASSERT_AT_WB_NEG) \ && (pos == 0 || next_c == HAWK_T('\0') \ || IS_WORD_CHAR(prev_c) != IS_WORD_CHAR(next_c)))) #define CHECK_CHAR_CLASSES(trans_i, tnfa, eflags) \ (((trans_i->assertions & ASSERT_CHAR_CLASS) \ && !(tnfa->cflags & REG_ICASE) \ && !tre_isctype((tre_cint_t)prev_c, trans_i->u.class)) \ || ((trans_i->assertions & ASSERT_CHAR_CLASS) \ && (tnfa->cflags & REG_ICASE) \ && !tre_isctype(tre_tolower((tre_cint_t)prev_c),trans_i->u.class) \ && !tre_isctype(tre_toupper((tre_cint_t)prev_c),trans_i->u.class)) \ || ((trans_i->assertions & ASSERT_CHAR_CLASS_NEG) \ && tre_neg_char_classes_match(trans_i->neg_classes,(tre_cint_t)prev_c,\ tnfa->cflags & REG_ICASE))) /* Returns 1 if `t1' wins `t2', 0 otherwise. */ HAWK_INLINE static int tre_tag_order(int num_tags, tre_tag_direction_t *tag_directions, int *t1, int *t2) { int i; for (i = 0; i < num_tags; i++) { if (tag_directions[i] == TRE_TAG_MINIMIZE) { if (t1[i] < t2[i]) return 1; if (t1[i] > t2[i]) return 0; } else { if (t1[i] > t2[i]) return 1; if (t1[i] < t2[i]) return 0; } } /* assert(0);*/ return 0; } HAWK_INLINE static int tre_neg_char_classes_match(tre_ctype_t *classes, tre_cint_t wc, int icase) { DPRINT(("neg_char_classes_test: %p, %d, %d\n", classes, wc, icase)); while (*classes != (tre_ctype_t)0) if ((!icase && tre_isctype(wc, *classes)) || (icase && (tre_isctype(tre_toupper(wc), *classes) || tre_isctype(tre_tolower(wc), *classes)))) return 1; /* Match. */ else classes++; return 0; /* No match. */ }