1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/* info-utils.h -- Exported functions and variables from info-util.c. */
/* 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). */
#if !defined (_INFO_UTILS_H_)
#define _INFO_UTILS_H_
#if !defined (HAVE_STRCHR)
# undef strchr
# undef strrchr
# define strchr index
# define strrchr rindex
#endif /* !HAVE_STRCHR */
#if !defined (HAVE_MEMCPY)
# undef memcpy
# define memcpy(dest, source, count) bcopy(source, dest, count)
#endif /* !HAVE_MEMCPY */
#include "nodes.h"
#include "window.h"
#include "search.h"
/* Structure which describes a node reference, such as a menu entry or
cross reference. Arrays of such references can be built by calling
info_menus_of_node () or info_xrefs_of_node (). */
typedef struct {
char *label; /* User Label. */
char *filename; /* File where this node can be found. */
char *nodename; /* Name of the node. */
int start, end; /* Offsets within the containing node of LABEL. */
} REFERENCE;
/* When non-zero, various display and input functions handle ISO Latin
character sets correctly. */
extern int ISO_Latin_p;
/* Variable which holds the most recent filename parsed as a result of
calling info_parse_xxx (). */
extern char *info_parsed_filename;
/* Variable which holds the most recent nodename parsed as a result of
calling info_parse_xxx (). */
extern char *info_parsed_nodename;
/* Parse the filename and nodename out of STRING. If STRING doesn't
contain a filename (i.e., it is NOT (FILENAME)NODENAME) then set
INFO_PARSED_FILENAME to NULL. If second argument NEWLINES_OKAY is
non-zero, it says to allow the nodename specification to cross a
newline boundary (i.e., only `,', `.', or `TAB' can end the spec). */
void info_parse_node ();
/* Return a NULL terminated array of REFERENCE * which represents the menu
found in NODE. If there is no menu in NODE, just return a NULL pointer. */
extern REFERENCE **info_menu_of_node ();
/* Return a NULL terminated array of REFERENCE * which represents the cross
refrences found in NODE. If there are no cross references in NODE, just
return a NULL pointer. */
extern REFERENCE **info_xrefs_of_node ();
/* Glean cross references from BINDING->buffer + BINDING->start until
BINDING->end. Return an array of REFERENCE * that represents each
cross reference in this range. */
extern REFERENCE **info_xrefs ();
/* Get the entry associated with LABEL in REFERENCES. Return a pointer to
the reference if found, or NULL. */
extern REFERENCE *info_get_labeled_reference ();
/* Glean menu entries from BINDING->buffer + BINDING->start until we
have looked at the entire contents of BINDING. Return an array
of REFERENCE * that represents each menu item in this range. */
extern REFERENCE **info_menu_items ();
/* A utility function for concatenating REFERENCE **. Returns a new
REFERENCE ** which is the concatenation of REF1 and REF2. The REF1
and REF2 arrays are freed, but their contents are not. */
REFERENCE **info_concatenate_references ();
/* Free the data associated with REFERENCES. */
extern void info_free_references ();
/* Search for sequences of whitespace or newlines in STRING, replacing
all such sequences with just a single space. Remove whitespace from
start and end of string. */
void canonicalize_whitespace ();
/* Return a pointer to a string which is the printed representation
of CHARACTER if it were printed at HPOS. */
extern char *printed_representation ();
/* Return a pointer to the part of PATHNAME that simply defines the file. */
extern char *filename_non_directory ();
/* Return non-zero if NODE is one especially created by Info. */
extern int internal_info_node_p ();
/* Make NODE appear to be one especially created by Info, and give it NAME. */
extern void name_internal_node ();
/* Return the window displaying NAME, the name of an internally created
Info window. */
extern WINDOW *get_internal_info_window ();
/* Return the node addressed by LABEL in NODE (usually one of "Prev:",
"Next:", "Up:", "File:", or "Node:". After a call to this function,
the global INFO_PARSED_NODENAME and INFO_PARSED_FILENAME contain
the information. */
extern void info_parse_label (/* label, node */);
#define info_label_was_found \
(info_parsed_nodename != NULL || info_parsed_filename != NULL)
#define info_file_label_of_node(n) info_parse_label (INFO_FILE_LABEL, n)
#define info_next_label_of_node(n) info_parse_label (INFO_NEXT_LABEL, n)
#define info_up_label_of_node(n) info_parse_label (INFO_UP_LABEL, n)
#define info_prev_label_of_node(n) \
do { \
info_parse_label (INFO_PREV_LABEL, n); \
if (!info_label_was_found) \
info_parse_label (INFO_ALTPREV_LABEL, n); \
} while (0)
#endif /* !_INFO_UTILS_H_ */
|
