1 /* $OpenBSD: bwstring.h,v 1.3 2019/05/15 09:07:46 schwarze Exp $ */ 2 3 /*- 4 * Copyright (C) 2009 Gabor Kovesdan <gabor@FreeBSD.org> 5 * Copyright (C) 2012 Oleg Moskalenko <mom040267@gmail.com> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * 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. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if !defined(__BWSTRING_H__) 31 #define __BWSTRING_H__ 32 33 #include <stdbool.h> 34 #include <stdio.h> 35 #include <errno.h> 36 #include <wchar.h> 37 38 #include "mem.h" 39 40 static const size_t sort_mb_cur_max = 1; 41 42 /* wchar_t is of 4 bytes: */ 43 #define SIZEOF_WCHAR_STRING(LEN) ((LEN)*sizeof(wchar_t)) 44 45 /* 46 * Binary "wide" string 47 */ 48 struct bwstring { 49 size_t len; 50 union 51 { 52 wchar_t wstr[0]; 53 unsigned char cstr[0]; 54 } data; 55 }; 56 57 struct reader_buffer { 58 wchar_t *fgetwln_z_buffer; 59 size_t fgetwln_z_buffer_size; 60 }; 61 62 typedef void *bwstring_iterator; 63 64 #define BWSLEN(s) ((s)->len) 65 66 struct bwstring *bwsalloc(size_t sz); 67 68 size_t bwsrawlen(const struct bwstring *bws); 69 const void* bwsrawdata(const struct bwstring *bws); 70 void bws_setlen(struct bwstring *bws, size_t newlen); 71 size_t bws_memsize(const struct bwstring *bws); 72 double bwstod(struct bwstring *s0, bool *empty); 73 int bws_month_score(const struct bwstring *s0); 74 75 struct bwstring *ignore_leading_blanks(struct bwstring *str); 76 struct bwstring *ignore_nonprinting(struct bwstring *str); 77 struct bwstring *dictionary_order(struct bwstring *str); 78 struct bwstring *ignore_case(struct bwstring *str); 79 80 void bwsprintf(FILE*, struct bwstring*, const char *prefix, const char *suffix); 81 void bws_disorder_warnx(struct bwstring *s, const char *fn, size_t pos); 82 83 struct bwstring *bwsdup(const struct bwstring *s); 84 struct bwstring *bwssbdup(const wchar_t *str, size_t size); 85 struct bwstring *bwscsbdup(const unsigned char *str, size_t size); 86 void bwsfree(struct bwstring *s); 87 size_t bwscpy(struct bwstring *dst, const struct bwstring *src); 88 struct bwstring *bwsncpy(struct bwstring *dst, const struct bwstring *src, size_t size); 89 struct bwstring *bwsnocpy(struct bwstring *dst, const struct bwstring *src, size_t offset, size_t size); 90 int bwscmp(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset); 91 int bwsncmp(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset, size_t len); 92 int bwscoll(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset); 93 size_t bwsfwrite(struct bwstring *bws, FILE *f, bool zero_ended); 94 struct bwstring *bwsfgetln(FILE *file, size_t *len, bool zero_ended, struct reader_buffer *rb); 95 96 static inline bwstring_iterator 97 bws_begin(struct bwstring *bws) 98 { 99 100 return (bwstring_iterator) (&(bws->data)); 101 } 102 103 static inline bwstring_iterator 104 bws_end(struct bwstring *bws) 105 { 106 107 return ((sort_mb_cur_max == 1) ? 108 (bwstring_iterator) (bws->data.cstr + bws->len) : 109 (bwstring_iterator) (bws->data.wstr + bws->len)); 110 } 111 112 static inline bwstring_iterator 113 bws_iterator_inc(bwstring_iterator iter, size_t pos) 114 { 115 116 if (sort_mb_cur_max == 1) 117 return ((unsigned char *) iter) + pos; 118 else 119 return ((wchar_t*) iter) + pos; 120 } 121 122 static inline wchar_t 123 bws_get_iter_value(bwstring_iterator iter) 124 { 125 126 if (sort_mb_cur_max == 1) 127 return *((unsigned char *) iter); 128 else 129 return *((wchar_t*) iter); 130 } 131 132 int 133 bws_iterator_cmp(bwstring_iterator iter1, bwstring_iterator iter2, size_t len); 134 135 #define BWS_GET(bws, pos) ((sort_mb_cur_max == 1) ? ((bws)->data.cstr[(pos)]) : (bws)->data.wstr[(pos)]) 136 137 void initialise_months(void); 138 139 #endif /* __BWSTRING_H__ */ 140