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json test

jsoncpp/src/lib_json/json_tool.h@0:2ee762ea11b3, 2018-01-26 (annotated)

Committer:
tgw
Date:
Fri Jan 26 06:05:31 2018 +0000
Revision:
0:2ee762ea11b3
json

Who changed what in which revision?

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tgw 0:2ee762ea11b3 1 // Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
tgw 0:2ee762ea11b3 2 // Distributed under MIT license, or public domain if desired and
tgw 0:2ee762ea11b3 3 // recognized in your jurisdiction.
tgw 0:2ee762ea11b3 4 // See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
tgw 0:2ee762ea11b3 5
tgw 0:2ee762ea11b3 6 #ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED
tgw 0:2ee762ea11b3 7 #define LIB_JSONCPP_JSON_TOOL_H_INCLUDED
tgw 0:2ee762ea11b3 8
tgw 0:2ee762ea11b3 9 #define NO_LOCALE_SUPPORT //---------------tgw----------
tgw 0:2ee762ea11b3 10
tgw 0:2ee762ea11b3 11 // Also support old flag NO_LOCALE_SUPPORT
tgw 0:2ee762ea11b3 12 #ifdef NO_LOCALE_SUPPORT
tgw 0:2ee762ea11b3 13 #define JSONCPP_NO_LOCALE_SUPPORT
tgw 0:2ee762ea11b3 14 #endif
tgw 0:2ee762ea11b3 15
tgw 0:2ee762ea11b3 16 #ifndef JSONCPP_NO_LOCALE_SUPPORT
tgw 0:2ee762ea11b3 17 #include <clocale>
tgw 0:2ee762ea11b3 18 #endif
tgw 0:2ee762ea11b3 19
tgw 0:2ee762ea11b3 20 /* This header provides common string manipulation support, such as UTF-8,
tgw 0:2ee762ea11b3 21 * portable conversion from/to string...
tgw 0:2ee762ea11b3 22 *
tgw 0:2ee762ea11b3 23 * It is an internal header that must not be exposed.
tgw 0:2ee762ea11b3 24 */
tgw 0:2ee762ea11b3 25
tgw 0:2ee762ea11b3 26 namespace Json {
tgw 0:2ee762ea11b3 27 static char getDecimalPoint() {
tgw 0:2ee762ea11b3 28 #ifdef JSONCPP_NO_LOCALE_SUPPORT
tgw 0:2ee762ea11b3 29 return '\0';
tgw 0:2ee762ea11b3 30 #else
tgw 0:2ee762ea11b3 31 struct lconv* lc = localeconv();
tgw 0:2ee762ea11b3 32 return lc ? *(lc->decimal_point) : '\0';
tgw 0:2ee762ea11b3 33 #endif
tgw 0:2ee762ea11b3 34 }
tgw 0:2ee762ea11b3 35
tgw 0:2ee762ea11b3 36 /// Converts a unicode code-point to UTF-8.
tgw 0:2ee762ea11b3 37 static inline JSONCPP_STRING codePointToUTF8(unsigned int cp) {
tgw 0:2ee762ea11b3 38 JSONCPP_STRING result;
tgw 0:2ee762ea11b3 39
tgw 0:2ee762ea11b3 40 // based on description from http://en.wikipedia.org/wiki/UTF-8
tgw 0:2ee762ea11b3 41
tgw 0:2ee762ea11b3 42 if (cp <= 0x7f) {
tgw 0:2ee762ea11b3 43 result.resize(1);
tgw 0:2ee762ea11b3 44 result[0] = static_cast<char>(cp);
tgw 0:2ee762ea11b3 45 } else if (cp <= 0x7FF) {
tgw 0:2ee762ea11b3 46 result.resize(2);
tgw 0:2ee762ea11b3 47 result[1] = static_cast<char>(0x80 | (0x3f & cp));
tgw 0:2ee762ea11b3 48 result[0] = static_cast<char>(0xC0 | (0x1f & (cp >> 6)));
tgw 0:2ee762ea11b3 49 } else if (cp <= 0xFFFF) {
tgw 0:2ee762ea11b3 50 result.resize(3);
tgw 0:2ee762ea11b3 51 result[2] = static_cast<char>(0x80 | (0x3f & cp));
tgw 0:2ee762ea11b3 52 result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
tgw 0:2ee762ea11b3 53 result[0] = static_cast<char>(0xE0 | (0xf & (cp >> 12)));
tgw 0:2ee762ea11b3 54 } else if (cp <= 0x10FFFF) {
tgw 0:2ee762ea11b3 55 result.resize(4);
tgw 0:2ee762ea11b3 56 result[3] = static_cast<char>(0x80 | (0x3f & cp));
tgw 0:2ee762ea11b3 57 result[2] = static_cast<char>(0x80 | (0x3f & (cp >> 6)));
tgw 0:2ee762ea11b3 58 result[1] = static_cast<char>(0x80 | (0x3f & (cp >> 12)));
tgw 0:2ee762ea11b3 59 result[0] = static_cast<char>(0xF0 | (0x7 & (cp >> 18)));
tgw 0:2ee762ea11b3 60 }
tgw 0:2ee762ea11b3 61
tgw 0:2ee762ea11b3 62 return result;
tgw 0:2ee762ea11b3 63 }
tgw 0:2ee762ea11b3 64
tgw 0:2ee762ea11b3 65 enum {
tgw 0:2ee762ea11b3 66 /// Constant that specify the size of the buffer that must be passed to
tgw 0:2ee762ea11b3 67 /// uintToString.
tgw 0:2ee762ea11b3 68 uintToStringBufferSize = 3 * sizeof(LargestUInt) + 1
tgw 0:2ee762ea11b3 69 };
tgw 0:2ee762ea11b3 70
tgw 0:2ee762ea11b3 71 // Defines a char buffer for use with uintToString().
tgw 0:2ee762ea11b3 72 typedef char UIntToStringBuffer[uintToStringBufferSize];
tgw 0:2ee762ea11b3 73
tgw 0:2ee762ea11b3 74 /** Converts an unsigned integer to string.
tgw 0:2ee762ea11b3 75 * @param value Unsigned integer to convert to string
tgw 0:2ee762ea11b3 76 * @param current Input/Output string buffer.
tgw 0:2ee762ea11b3 77 * Must have at least uintToStringBufferSize chars free.
tgw 0:2ee762ea11b3 78 */
tgw 0:2ee762ea11b3 79 static inline void uintToString(LargestUInt value, char*& current) {
tgw 0:2ee762ea11b3 80 *--current = 0;
tgw 0:2ee762ea11b3 81 do {
tgw 0:2ee762ea11b3 82 *--current = static_cast<char>(value % 10U + static_cast<unsigned>('0'));
tgw 0:2ee762ea11b3 83 value /= 10;
tgw 0:2ee762ea11b3 84 } while (value != 0);
tgw 0:2ee762ea11b3 85 }
tgw 0:2ee762ea11b3 86
tgw 0:2ee762ea11b3 87 /** Change ',' to '.' everywhere in buffer.
tgw 0:2ee762ea11b3 88 *
tgw 0:2ee762ea11b3 89 * We had a sophisticated way, but it did not work in WinCE.
tgw 0:2ee762ea11b3 90 * @see https://github.com/open-source-parsers/jsoncpp/pull/9
tgw 0:2ee762ea11b3 91 */
tgw 0:2ee762ea11b3 92 static inline void fixNumericLocale(char* begin, char* end) {
tgw 0:2ee762ea11b3 93 while (begin < end) {
tgw 0:2ee762ea11b3 94 if (*begin == ',') {
tgw 0:2ee762ea11b3 95 *begin = '.';
tgw 0:2ee762ea11b3 96 }
tgw 0:2ee762ea11b3 97 ++begin;
tgw 0:2ee762ea11b3 98 }
tgw 0:2ee762ea11b3 99 }
tgw 0:2ee762ea11b3 100
tgw 0:2ee762ea11b3 101 static inline void fixNumericLocaleInput(char* begin, char* end) {
tgw 0:2ee762ea11b3 102 char decimalPoint = getDecimalPoint();
tgw 0:2ee762ea11b3 103 if (decimalPoint != '\0' && decimalPoint != '.') {
tgw 0:2ee762ea11b3 104 while (begin < end) {
tgw 0:2ee762ea11b3 105 if (*begin == '.') {
tgw 0:2ee762ea11b3 106 *begin = decimalPoint;
tgw 0:2ee762ea11b3 107 }
tgw 0:2ee762ea11b3 108 ++begin;
tgw 0:2ee762ea11b3 109 }
tgw 0:2ee762ea11b3 110 }
tgw 0:2ee762ea11b3 111 }
tgw 0:2ee762ea11b3 112
tgw 0:2ee762ea11b3 113 } // namespace Json {
tgw 0:2ee762ea11b3 114
tgw 0:2ee762ea11b3 115 #endif // LIB_JSONCPP_JSON_TOOL_H_INCLUDED