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/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _LINEREADER_H
#define _LINEREADER_H 1
#include <ctype.h>
#include <libintl.h>
#include <stdio.h>
#include "error.h"
#include "locfile-token.h"
typedef const struct keyword_t *(*kw_hash_fct_t) (const char *, int);
struct charset_t;
struct token
{
enum token_t tok;
union
{
struct
{
char *start;
size_t len;
} str;
unsigned long int num;
struct
{
unsigned int val;
int nbytes;
} charcode;
} 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;
kw_hash_fct_t hash_fct;
};
/* Functions defined in linereader.c. */
struct linereader *lr_open (const char *fname, kw_hash_fct_t hf);
int lr_eof (struct linereader *lr);
void lr_close (struct linereader *lr);
int lr_next (struct linereader *lr);
struct token *lr_token (struct linereader *lr,
const struct charset_t *charset);
#define lr_error(lr, fmt, args...) \
error_at_line (0, 0, lr->fname, lr->lineno, fmt, ## args)
static inline int
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
lr_ungetc (struct linereader *lr, int ch)
{
if (lr->idx == 0)
return -1;
lr->buf[--lr->idx] = ch;
return 0;
}
static inline int
lr_ungetn (struct linereader *lr, int n)
{
if (lr->idx < n)
return -1;
lr->idx -= n;
return 0;
}
static inline void
lr_ignore_rest (struct linereader *lr, int verbose)
{
if (verbose)
{
while (isspace (lr->buf[lr->idx]) && lr->buf[lr->idx] != '\n'
&& lr->buf[lr->idx] != lr->comment_char)
if (lr->buf[lr->idx] == '\0')
{
if (lr_next (lr) < 0)
return;
}
else
++lr->idx;
if (lr->buf[lr->idx] != '\n' &&lr->buf[lr->idx] != lr->comment_char)
lr_error (lr, _("trailing garbage at end of line"));
}
/* Ignore continued line. */
while (lr->bufact > 0 && lr->buf[lr->bufact - 1] != '\n')
if (lr_next (lr) < 0)
break;
lr->idx = lr->bufact;
}
#endif /* linereader.h */
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