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Diffstat (limited to 'locale/programs/linereader.h')
-rw-r--r-- | locale/programs/linereader.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/locale/programs/linereader.h b/locale/programs/linereader.h new file mode 100644 index 0000000..b78697e --- /dev/null +++ b/locale/programs/linereader.h @@ -0,0 +1,158 @@ +/* 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 */ |