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json_tool.h
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1 // Copyright 2007-2010 Baptiste Lepilleur
2 // Distributed under MIT license, or public domain if desired and
3 // recognized in your jurisdiction.
4 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
5 
6 #ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED
7 #define LIB_JSONCPP_JSON_TOOL_H_INCLUDED
8 
9 /* This header provides common string manipulation support, such as UTF-8,
10  * portable conversion from/to string...
11  *
12  * It is an internal header that must not be exposed.
13  */
14 
15 namespace Json {
16 
18 static inline JSONCPP_STRING codePointToUTF8(unsigned int cp) {
19  JSONCPP_STRING result;
20 
21  // based on description from http://en.wikipedia.org/wiki/UTF-8
22 
23  if (cp <= 0x7f) {
24  result.resize(1);
25  result[0] = static_cast<char>(cp);
26  } else if (cp <= 0x7FF) {
27  result.resize(2);
28  result[1] = static_cast<char>(0x80 | (0x3f & cp));
29  result[0] = static_cast<char>(0xC0 | (0x1f & (cp >> 6)));
30  } else if (cp <= 0xFFFF) {
31  result.resize(3);
32  result[2] = static_cast<char>(0x80 | (0x3f & cp));
33  result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
34  result[0] = static_cast<char>(0xE0 | (0xf & (cp >> 12)));
35  } else if (cp <= 0x10FFFF) {
36  result.resize(4);
37  result[3] = static_cast<char>(0x80 | (0x3f & cp));
38  result[2] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
39  result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 12)));
40  result[0] = static_cast<char>(0xF0 | (0x7 & (cp >> 18)));
41  }
42 
43  return result;
44 }
45 
47 static inline bool isControlCharacter(char ch) { return ch > 0 && ch <= 0x1F; }
48 
49 enum {
53 };
54 
55 // Defines a char buffer for use with uintToString().
57 
63 static inline void uintToString(LargestUInt value, char*& current) {
64  *--current = 0;
65  do {
66  *--current = static_cast<char>(value % 10U + static_cast<unsigned>('0'));
67  value /= 10;
68  } while (value != 0);
69 }
70 
76 static inline void fixNumericLocale(char* begin, char* end) {
77  while (begin < end) {
78  if (*begin == ',') {
79  *begin = '.';
80  }
81  ++begin;
82  }
83 }
84 
85 } // namespace Json {
86 
87 #endif // LIB_JSONCPP_JSON_TOOL_H_INCLUDED
static void uintToString(LargestUInt value, char *&current)
Converts an unsigned integer to string.
Definition: json_tool.h:63
#define JSONCPP_STRING
Definition: config.h:169
static JSONCPP_STRING codePointToUTF8(unsigned int cp)
Converts a unicode code-point to UTF-8.
Definition: json_tool.h:18
char UIntToStringBuffer[uintToStringBufferSize]
Definition: json_tool.h:56
static bool isControlCharacter(char ch)
Returns true if ch is a control character (in range [1,31]).
Definition: json_tool.h:47
static void fixNumericLocale(char *begin, char *end)
Change &#39;,&#39; to &#39;.
Definition: json_tool.h:76
UInt64 LargestUInt
Definition: config.h:159
JSON (JavaScript Object Notation).
Definition: allocator.h:12
Constant that specify the size of the buffer that must be passed to uintToString. ...
Definition: json_tool.h:52