1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.org>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses/>. */
#ifndef _LINEREADER_H
#define _LINEREADER_H 1
#include <ctype.h>
#include <libintl.h>
#include <stdint.h>
#include <stdio.h>
#include "charmap.h"
#include "error.h"
#include "locfile-token.h"
#include "repertoire.h"
#include "record-status.h"
typedef const struct keyword_t *(*kw_hash_fct_t) (const char *, size_t);
struct charset_t;
struct localedef_t;
struct token
{
enum token_t tok;
union
{
struct
{
char *startmb;
size_t lenmb;
uint32_t *startwc;
size_t lenwc;
} str;
unsigned long int num;
struct
{
/* This element is sized on the safe expectation that no single
character in any character set uses more than 16 bytes. */
unsigned char bytes[16];
int nbytes;
} charcode;
uint32_t ucs4;
} val;
};
struct linereader
{
FILE *fp;
const char *fname;
char *buf;
size_t bufsize;
size_t bufact;
size_t lineno;
size_t idx;
char comment_char;
char escape_char;
struct token token;
int translate_strings;
int return_widestr;
kw_hash_fct_t hash_fct;
};
/* Functions defined in linereader.c. */
extern struct linereader *lr_open (const char *fname, kw_hash_fct_t hf);
extern struct linereader *lr_create (FILE *fp, const char *fname,
kw_hash_fct_t hf);
extern int lr_eof (struct linereader *lr);
extern void lr_close (struct linereader *lr);
extern int lr_next (struct linereader *lr);
extern struct token *lr_token (struct linereader *lr,
const struct charmap_t *charmap,
struct localedef_t *locale,
const struct repertoire_t *repertoire,
int verbose);
extern void lr_ignore_rest (struct linereader *lr, int verbose);
static inline void
__attribute__ ((__format__ (__printf__, 2, 3), nonnull (1, 2)))
lr_error (struct linereader *lr, const char *fmt, ...)
{
char *str;
va_list arg;
struct locale_state ls;
int ret;
va_start (arg, fmt);
ls = push_locale ();
ret = vasprintf (&str, fmt, arg);
if (ret == -1)
abort ();
pop_locale (ls);
va_end (arg);
error_at_line (0, 0, lr->fname, lr->lineno, "%s", str);
free (str);
}
static inline int
__attribute ((always_inline))
lr_getc (struct linereader *lr)
{
if (lr->idx == lr->bufact)
{
if (lr->bufact != 0)
if (lr_next (lr) < 0)
return EOF;
if (lr->bufact == 0)
return EOF;
}
return lr->buf[lr->idx] == '\32' ? EOF : lr->buf[lr->idx++];
}
static inline int
__attribute ((always_inline))
lr_ungetc (struct linereader *lr, int ch)
{
if (lr->idx == 0)
return -1;
if (ch != EOF)
lr->buf[--lr->idx] = ch;
return 0;
}
static inline int
lr_ungetn (struct linereader *lr, size_t n)
{
if (lr->idx < n)
return -1;
lr->idx -= n;
return 0;
}
#endif /* linereader.h */
|
