Annotation of src/usr.bin/sort/bwstring.h, Revision 1.2
1.2 ! millert 1: /* $OpenBSD: bwstring.h,v 1.1 2015/03/17 17:45:13 millert Exp $ */
1.1 millert 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: extern bool byte_sort;
41: extern size_t sort_mb_cur_max;
42:
43: /* wchar_t is of 4 bytes: */
44: #define SIZEOF_WCHAR_STRING(LEN) ((LEN)*sizeof(wchar_t))
45:
46: /*
47: * Binary "wide" string
48: */
49: struct bwstring {
50: size_t len;
51: union
52: {
53: wchar_t wstr[0];
54: unsigned char cstr[0];
55: } data;
56: };
57:
58: struct reader_buffer {
59: wchar_t *fgetwln_z_buffer;
60: size_t fgetwln_z_buffer_size;
61: };
62:
63: typedef void *bwstring_iterator;
64:
65: #define BWSLEN(s) ((s)->len)
66:
67: struct bwstring *bwsalloc(size_t sz);
68:
69: size_t bwsrawlen(const struct bwstring *bws);
70: const void* bwsrawdata(const struct bwstring *bws);
71: void bws_setlen(struct bwstring *bws, size_t newlen);
72: size_t bws_memsize(const struct bwstring *bws);
73: double bwstod(struct bwstring *s0, bool *empty);
74: int bws_month_score(const struct bwstring *s0);
75:
76: struct bwstring *ignore_leading_blanks(struct bwstring *str);
77: struct bwstring *ignore_nonprinting(struct bwstring *str);
78: struct bwstring *dictionary_order(struct bwstring *str);
79: struct bwstring *ignore_case(struct bwstring *str);
80:
81: void bwsprintf(FILE*, struct bwstring*, const char *prefix, const char *suffix);
82: void bws_disorder_warnx(struct bwstring *s, const char *fn, size_t pos);
83:
84: struct bwstring *bwsdup(const struct bwstring *s);
85: struct bwstring *bwssbdup(const wchar_t *str, size_t size);
86: struct bwstring *bwscsbdup(const unsigned char *str, size_t size);
87: void bwsfree(struct bwstring *s);
88: size_t bwscpy(struct bwstring *dst, const struct bwstring *src);
89: struct bwstring *bwsncpy(struct bwstring *dst, const struct bwstring *src, size_t size);
90: struct bwstring *bwsnocpy(struct bwstring *dst, const struct bwstring *src, size_t offset, size_t size);
91: int bwscmp(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset);
92: int bwsncmp(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset, size_t len);
93: int bwscoll(const struct bwstring *bws1, const struct bwstring *bws2, size_t offset);
94: size_t bwsfwrite(struct bwstring *bws, FILE *f, bool zero_ended);
95: struct bwstring *bwsfgetln(FILE *file, size_t *len, bool zero_ended, struct reader_buffer *rb);
96:
97: static inline bwstring_iterator
98: bws_begin(struct bwstring *bws)
99: {
100:
101: return (bwstring_iterator) (&(bws->data));
102: }
103:
104: static inline bwstring_iterator
105: bws_end(struct bwstring *bws)
106: {
107:
108: return ((sort_mb_cur_max == 1) ?
109: (bwstring_iterator) (bws->data.cstr + bws->len) :
110: (bwstring_iterator) (bws->data.wstr + bws->len));
111: }
112:
113: static inline bwstring_iterator
114: bws_iterator_inc(bwstring_iterator iter, size_t pos)
115: {
116:
117: if (sort_mb_cur_max == 1)
118: return ((unsigned char *) iter) + pos;
119: else
120: return ((wchar_t*) iter) + pos;
121: }
122:
123: static inline wchar_t
124: bws_get_iter_value(bwstring_iterator iter)
125: {
126:
127: if (sort_mb_cur_max == 1)
128: return *((unsigned char *) iter);
129: else
130: return *((wchar_t*) iter);
131: }
132:
133: int
134: bws_iterator_cmp(bwstring_iterator iter1, bwstring_iterator iter2, size_t len);
135:
136: #define BWS_GET(bws, pos) ((sort_mb_cur_max == 1) ? ((bws)->data.cstr[(pos)]) : (bws)->data.wstr[(pos)])
137:
138: void initialise_months(void);
139:
140: #endif /* __BWSTRING_H__ */
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