blob: 35f4461d8e0130de1ad425719e3acc049b5dbe9c (
plain)
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
|
// ArduinoJson - arduinojson.org
// Copyright Benoit Blanchon 2014-2018
// MIT License
#pragma once
#if ARDUINOJSON_ENABLE_STD_STRING || ARDUINOJSON_ENABLE_ARDUINO_STRING
#if ARDUINOJSON_ENABLE_ARDUINO_STRING
#include <WString.h>
#endif
#if ARDUINOJSON_ENABLE_STD_STRING
#include <string>
#endif
namespace ArduinoJson {
namespace Internals {
template <typename TString>
struct StdStringTraits {
typedef const char* duplicate_t;
template <typename Buffer>
static duplicate_t duplicate(const TString& str, Buffer* buffer) {
if (!str.c_str()) return NULL; // <- Arduino string can return NULL
size_t size = str.length() + 1;
void* dup = buffer->alloc(size);
if (dup != NULL) memcpy(dup, str.c_str(), size);
return static_cast<duplicate_t>(dup);
}
static bool is_null(const TString& str) {
// Arduino's String::c_str() can return NULL
return !str.c_str();
}
struct Reader : CharPointerTraits<char>::Reader {
Reader(const TString& str) : CharPointerTraits<char>::Reader(str.c_str()) {}
};
static bool equals(const TString& str, const char* expected) {
// Arduino's String::c_str() can return NULL
const char* actual = str.c_str();
if (!actual || !expected) return actual == expected;
return 0 == strcmp(actual, expected);
}
static void append(TString& str, char c) {
str += c;
}
static void append(TString& str, const char* s) {
str += s;
}
static const bool has_append = true;
static const bool has_equals = true;
static const bool should_duplicate = true;
};
#if ARDUINOJSON_ENABLE_ARDUINO_STRING
template <>
struct StringTraits<String, void> : StdStringTraits<String> {};
template <>
struct StringTraits<StringSumHelper, void> : StdStringTraits<StringSumHelper> {
};
#endif
#if ARDUINOJSON_ENABLE_STD_STRING
template <>
struct StringTraits<std::string, void> : StdStringTraits<std::string> {};
#endif
} // namespace Internals
} // namespace ArduinoJson
#endif
|
