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Diffstat (limited to 'texinfo/info/search.h')
| -rw-r--r-- | texinfo/info/search.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/texinfo/info/search.h b/texinfo/info/search.h new file mode 100644 index 00000000000..72695c3f0b6 --- /dev/null +++ b/texinfo/info/search.h @@ -0,0 +1,75 @@ +/* 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_ */ + |