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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) by Kongsberg Oil & Gas Technologies.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Kongsberg Oil & Gas Technologies
* about acquiring a Coin Professional Edition License.
*
* See http://www.coin3d.org/ for more information.
*
* Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
* http://www.sim.no/ sales@sim.no coin-support@coin3d.org
*
\**************************************************************************/
#include <Inventor/C/XML/attribute.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "utils.h"
// TODO:
// - optimize empty strings to use a static, nonfreeable buffer?
// *************************************************************************
struct cc_xml_attr {
char * name;
char * value;
};
// *************************************************************************
/*!
Creates a new cc_xml_attr object, with no name or value information.
*/
cc_xml_attr *
cc_xml_attr_new(void)
{
cc_xml_attr * attr = new cc_xml_attr;
assert(attr);
attr->name = NULL;
attr->value = NULL;
return attr;
}
/*!
Creates a new cc_xml_attr object, with the given name and value information.
The \a value argument can be NULL.
*/
cc_xml_attr *
cc_xml_attr_new_from_data(const char * name, const char * value)
{
cc_xml_attr * attr = cc_xml_attr_new();
attr->name = cc_xml_strdup(name);
if (value) { attr->value = cc_xml_strdup(value); }
return attr;
}
/*!
Returns a clone of the given attribute.
*/
cc_xml_attr *
cc_xml_attr_clone(const cc_xml_attr * attr)
{
assert(attr);
return cc_xml_attr_new_from_data(attr->name, attr->value);
}
/*!
Deletes the cc_xml_Attr object, including its internals.
*/
void
cc_xml_attr_delete_x(cc_xml_attr * attr)
{
assert(attr);
if (attr->name) delete [] attr->name;
if (attr->value) delete [] attr->value;
delete attr;
}
// *************************************************************************
/*!
Sets the name-part of the attribute. Old name-information will be freed.
The \a name argument can be NULL to clear the setting.
*/
void
cc_xml_attr_set_name_x(cc_xml_attr * attr, const char * name)
{
if (attr->name) {
delete [] attr->name;
attr->name = NULL;
}
if (name) attr->name = cc_xml_strdup(name);
}
/*!
Returns the name-part of the attribute if one is set, and NULL otherwise.
*/
const char *
cc_xml_attr_get_name(const cc_xml_attr * attr)
{
return attr->name;
}
/*!
Sets the value-part of the attribute. Old information will be freed.
The \a value argument can be NULL to clear the information.
*/
void
cc_xml_attr_set_value_x(cc_xml_attr * attr, const char * value)
{
if (attr->value) {
delete [] attr->value;
attr->value = NULL;
}
if (value) attr->value = cc_xml_strdup(value);
}
/*!
Returns the value part of the attribute if one is set, or NULL otherwise.
*/
const char *
cc_xml_attr_get_value(const cc_xml_attr * attr)
{
return attr->value;
}
// *************************************************************************
// TODO: type-specific accessor methods...
// *************************************************************************
size_t
cc_xml_attr_calculate_size(const cc_xml_attr * attr)
{
size_t bytes = 0;
bytes += strlen(attr->name);
bytes += 2; // ="
// FIXME: count quotables in string value, and add up quote count
if (attr->value) bytes += strlen(attr->value);
bytes += 1; // "
return bytes;
}
size_t
cc_xml_attr_write_to_buffer(const cc_xml_attr * attr, char * buffer, size_t bufsize)
{
// We assert on mismatches between calculated memory usage and actual memory
// usage, since this must be calculated correctly for not getting memory corruption
// on invalid buffer size allocation before writing.
const char * const origbufferptr = buffer;
const size_t assumed = cc_xml_attr_calculate_size(attr);
assert(assumed < bufsize);
int namelen = strlen(attr->name);
strcpy(buffer, attr->name);
buffer += namelen;
strcpy(buffer, "=\"");
buffer += 2;
if (attr->value) {
int valuelen = strlen(attr->value);
// FIXME: count quotables, and insert quoting in value string if needed
strcpy(buffer, attr->value);
buffer += valuelen;
}
buffer[0] = '"';
buffer += 1;
size_t used = buffer - origbufferptr;
assert(used == assumed);
return used;
}
// *************************************************************************
|