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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 ();
+
+/* Some unixes don't have strcasecmp or strncasecmp. */
+#if !defined (HAVE_STRCASECMP)
+extern int strcasecmp (), strncasecmp ();
+#endif /* !HAVE_STRCASECMP */
+
+/* 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_ */
+