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-rw-r--r--locale/programs/linereader.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/locale/programs/linereader.h b/locale/programs/linereader.h
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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 */