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+/* search.h -- Structure used to search large bodies of text, with bounds. */
+
+/* This file is part of GNU Info, a program for reading online documentation
+   stored in Info format.
+
+   Copyright (C) 1993 Free Software Foundation, Inc.
+
+   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; either version 2, 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+   Written by Brian Fox (bfox@ai.mit.edu). */
+
+/* The search functions take two arguments:
+
+     1) a string to search for, and
+
+     2) a pointer to a SEARCH_BINDING which contains the buffer, start,
+        and end of the search.
+
+   They return a long, which is the offset from the start of the buffer
+   at which the match was found.  An offset of -1 indicates failure. */
+
+#if !defined (_SEARCH_H_)
+#define _SEARCH_H_
+
+typedef struct {
+  char *buffer;			/* The buffer of text to search. */
+  long start;			/* Offset of the start of the search. */
+  long end;			/* Offset of the end of the searh. */
+  int flags;			/* Flags controlling the type of search. */
+} SEARCH_BINDING;
+
+#define S_FoldCase	0x01	/* Set means fold case in searches. */
+#define S_SkipDest	0x02	/* Set means return pointing after the dest. */
+
+SEARCH_BINDING *make_binding (), *copy_binding ();
+extern long search_forward (), search_backward (), search ();
+extern int looking_at ();
+
+/* Note that STRING_IN_LINE () always returns the offset of the 1st character
+   after the string. */
+extern int string_in_line ();
+
+/* Unix doesn't have stricmp () functions. */
+/* strcmp (), but caseless. */
+extern int stricmp ();
+
+/* Compare at most COUNT characters from STRING1 to STRING2.  Case
+   doesn't matter. */
+extern int strnicmp ();
+
+/* Function names that start with "skip" are passed a string, and return
+   an offset from the start of that string.  Function names that start
+   with "find" are passed a SEARCH_BINDING, and return an absolute position
+   marker of the item being searched for.  "Find" functions return a value
+   of -1 if the item being looked for couldn't be found. */
+extern int skip_whitespace (), skip_non_whitespace ();
+extern int skip_whitespace_and_newlines (), skip_line ();
+extern int skip_node_characters (), skip_node_separator ();
+#define DONT_SKIP_NEWLINES 0
+#define SKIP_NEWLINES 1
+
+extern long find_node_separator (), find_tags_table ();
+extern long find_node_in_binding ();
+
+#endif /* !_SEARCH_H_ */
+