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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* html.c -- html-related utilities.
$Id: html.c,v 1.1 2000/02/09 01:25:11 espie Exp $
Copyright (C) 1999 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. */
#include "system.h"
#include "cmds.h"
#include "html.h"
#include "lang.h"
#include "makeinfo.h"
#include "sectioning.h"
/* See html.h. */
int html_output_head_p = 0;
void
html_output_head ()
{
char *html_title;
if (html_output_head_p)
return;
html_output_head_p = 1;
/* The <title> should not have markup. */
html_title = title ? text_expansion (title) : _("Untitled");
add_word_args ("<html lang=\"%s\"><head>\n<title>%s</title>\n",
language_table[language_code].abbrev, html_title);
add_word ("<meta http-equiv=\"Content-Type\" content=\"text/html");
if (document_encoding)
add_word_args ("; charset=%s", document_encoding);
add_word ("\">\n");
add_word_args ("<meta name=description content=\"%s\">\n", html_title);
add_word_args ("<meta name=generator content=\"makeinfo %s\">\n", VERSION);
add_word ("<link href=\"http://texinfo.org/\" rel=generator-home>\n");
add_word ("</head><body>\n\n");
}
/* Escape HTML special characters in the string if necessary,
returning a pointer to a possibly newly-allocated one. */
char *
escape_string (string)
char * string;
{
int i=0, newlen=0;
char * newstring;
do
{
/* Find how much to allocate. */
switch (string[i])
{
case '&':
newlen += 5; /* `&' */
break;
case '<':
case '>':
newlen += 4; /* `<', `>' */
break;
default:
newlen++;
}
i++;
}
while (string[i]);
if (newlen == i) return string; /* Already OK. */
newstring = xmalloc (newlen + 2);
i = 0;
do
{
switch (string[i])
{
case '&':
strcpy (newstring, "&");
newstring += 5;
break;
case '<':
strcpy (newstring, "<");
newstring += 4;
break;
case '>':
strcpy (newstring, ">");
newstring += 4;
break;
default:
newstring[0] = string[i];
newstring++;
}
}
while (string[i++]);
free (string);
return newstring - newlen -1;
}
/* Open or close TAG according to START_OR_END. */
void
insert_html_tag (start_or_end, tag)
int start_or_end;
char *tag;
{
if (!paragraph_is_open && (start_or_end == START))
{
/* Need to compensate for the <p> we are about to insert, or
else cm_xxx functions that call us will get wrong text
between START and END. */
adjust_braces_following (output_paragraph_offset, 3);
add_word ("<p>");
}
add_char ('<');
if (start_or_end != START)
add_char ('/');
add_word (tag);
add_char ('>');
}
/* Output an HTML <link> to the filename for NODE, including the
other string as extra attributes. */
void
add_link (node, attributes)
char *node, *attributes;
{
if (node)
{
add_word_args ("<link %s href=\"", attributes);
add_anchor_name (node, 1);
add_word ("\">\n");
}
}
/* Output NAME with characters escaped as appropriate for an anchor
name, i.e., escape URL special characters as %<n>. */
void
add_escaped_anchor_name (name)
char *name;
{
for (; *name; name++)
{
if (*name == '&')
add_word ("&");
else if (! URL_SAFE_CHAR (*name))
/* Cast so characters with the high bit set are treated as >128,
for example o-umlaut should be 246, not -10. */
add_word_args ("%%%x", (unsigned char) *name);
else
add_char (*name);
}
}
/* Insert the text for the name of a reference in an HTML anchor
appropriate for NODENAME. If HREF is nonzero, it will be
appropriate for a href= attribute, rather than name= i.e., including
the `#' if it's an internal reference. */
void
add_anchor_name (nodename, href)
char *nodename;
int href;
{
if (href)
add_char ('#');
add_escaped_anchor_name (nodename);
}
|
