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/* Copyright (C) 1996-2019 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 *, unsigned int);
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 */
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