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
|
/*
Minetest
Copyright (C) 2017-8 rubenwardy <rw@rubenwardy.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "itemstackmetadata.h"
#include "util/serialize.h"
#include "util/strfnd.h"
#include "util/numeric.h"
#include <algorithm>
#define DESERIALIZE_START '\x01'
#define DESERIALIZE_KV_DELIM '\x02'
#define DESERIALIZE_PAIR_DELIM '\x03'
#define DESERIALIZE_START_STR "\x01"
#define DESERIALIZE_KV_DELIM_STR "\x02"
#define DESERIALIZE_PAIR_DELIM_STR "\x03"
#define TOOLCAP_KEY "tool_capabilities"
void ItemStackMetadata::clear()
{
Metadata::clear();
updateToolCapabilities();
}
static void sanitize_string(std::string &str)
{
str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_START), str.end());
str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_KV_DELIM), str.end());
str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_PAIR_DELIM), str.end());
}
bool ItemStackMetadata::setString(const std::string &name, const std::string &var)
{
std::string clean_name = name;
std::string clean_var = var;
sanitize_string(clean_name);
sanitize_string(clean_var);
bool result = Metadata::setString(clean_name, clean_var);
if (clean_name == TOOLCAP_KEY)
updateToolCapabilities();
return result;
}
void ItemStackMetadata::serialize(std::ostream &os, bool disk) const
{
std::ostringstream os2;
os2 << DESERIALIZE_START;
std::string unsent_fields;
for (const auto &stringvar : m_stringvars) {
if (! disk
&& stringvar.first != TOOLCAP_KEY
&& stringvar.first != "description"
&& stringvar.first != "color"
&& stringvar.first != "short_description"
&& stringvar.first != "palette_index") {
unsent_fields += stringvar.first + "=" + stringvar.second;
continue;
}
if (!stringvar.first.empty() || !stringvar.second.empty())
os2 << stringvar.first << DESERIALIZE_KV_DELIM
<< stringvar.second << DESERIALIZE_PAIR_DELIM;
}
if (! unsent_fields.empty())
os2 << "hash" << DESERIALIZE_KV_DELIM
<< murmur_hash_64_ua(unsent_fields.data(), unsent_fields.length(), 0xdeadbeef) << DESERIALIZE_PAIR_DELIM;
os << serializeJsonStringIfNeeded(os2.str());
}
void ItemStackMetadata::deSerialize(std::istream &is)
{
std::string in = deSerializeJsonStringIfNeeded(is);
m_stringvars.clear();
if (!in.empty()) {
if (in[0] == DESERIALIZE_START) {
Strfnd fnd(in);
fnd.to(1);
while (!fnd.at_end()) {
std::string name = fnd.next(DESERIALIZE_KV_DELIM_STR);
std::string var = fnd.next(DESERIALIZE_PAIR_DELIM_STR);
m_stringvars[name] = var;
}
} else {
// BACKWARDS COMPATIBILITY
m_stringvars[""] = in;
}
}
updateToolCapabilities();
}
void ItemStackMetadata::updateToolCapabilities()
{
if (contains(TOOLCAP_KEY)) {
toolcaps_overridden = true;
toolcaps_override = ToolCapabilities();
std::istringstream is(getString(TOOLCAP_KEY));
toolcaps_override.deserializeJson(is);
} else {
toolcaps_overridden = false;
}
}
void ItemStackMetadata::setToolCapabilities(const ToolCapabilities &caps)
{
std::ostringstream os;
caps.serializeJson(os);
setString(TOOLCAP_KEY, os.str());
}
void ItemStackMetadata::clearToolCapabilities()
{
setString(TOOLCAP_KEY, "");
}
|
