// Copyright 2007-2010 Baptiste Lepilleur and The JsonCpp Authors
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
#ifndef LIB_JSONCPP_JSON_TOOL_H_INCLUDED
#define LIB_JSONCPP_JSON_TOOL_H_INCLUDED
#if !
defined(JSON_IS_AMALGAMATION)
#include <json/config.h>
#endif
// Also support old flag NO_LOCALE_SUPPORT
#ifdef NO_LOCALE_SUPPORT
#define JSONCPP_NO_LOCALE_SUPPORT
#endif
#ifndef JSONCPP_NO_LOCALE_SUPPORT
#include <clocale>
#endif
/* This header provides common string manipulation support, such as UTF-8,
* portable conversion from/to string...
*
* It is an internal header that must not be exposed.
*/
namespace Json {
static inline char getDecimalPoint() {
#ifdef JSONCPP_NO_LOCALE_SUPPORT
return '\0';
#else
struct lconv* lc = localeconv();
return lc ? *(lc->decimal_point) :
'\0';
#endif
}
/// Converts a unicode code-point to UTF-8.
static inline String codePointToUTF8(
unsigned int cp) {
String result;
// based on description from http://en.wikipedia.org/wiki/UTF-8
if (cp <= 0x7f) {
result.resize(1);
result[0] =
static_cast<
char>(cp);
}
else if (cp <= 0x7FF) {
result.resize(2);
result[1] =
static_cast<
char>(0x80 | (0x3f & cp));
result[0] =
static_cast<
char>(0xC0 | (0x1f & (cp >> 6)));
}
else if (cp <= 0xFFFF) {
result.resize(3);
result[2] =
static_cast<
char>(0x80 | (0x3f & cp));
result[1] =
static_cast<
char>(0x80 | (0x3f & (cp >> 6)));
result[0] =
static_cast<
char>(0xE0 | (0xf & (cp >> 12)));
}
else if (cp <= 0x10FFFF) {
result.resize(4);
result[3] =
static_cast<
char>(0x80 | (0x3f & cp));
result[2] =
static_cast<
char>(0x80 | (0x3f & (cp >> 6)));
result[1] =
static_cast<
char>(0x80 | (0x3f & (cp >> 12)));
result[0] =
static_cast<
char>(0xF0 | (0x7 & (cp >> 18)));
}
return result;
}
enum {
/// Constant that specify the size of the buffer that must be passed to
/// uintToString.
uintToStringBufferSize = 3 *
sizeof(LargestUInt) + 1
};
// Defines a char buffer for use with uintToString().
using UIntToStringBuffer =
char[uintToStringBufferSize];
/** Converts an unsigned integer to string.
* @param value Unsigned integer to convert to string
* @param current Input/Output string buffer.
* Must have at least uintToStringBufferSize chars free.
*/
static inline void uintToString(LargestUInt value,
char*& current) {
*--current = 0;
do {
*--current =
static_cast<
char>(value % 10U +
static_cast<
unsigned>(
'0'));
value /= 10;
}
while (value != 0);
}
/** Change ',' to '.' everywhere in buffer.
*
* We had a sophisticated way, but it did not work in WinCE.
* @see https://github.com/open-source-parsers/jsoncpp/pull/9
*/
template <
typename Iter> Iter fixNumericLocale(Iter begin, Iter end) {
for (; begin != end; ++begin) {
if (*begin ==
',') {
*begin =
'.';
}
}
return begin;
}
template <
typename Iter>
void fixNumericLocaleInput(Iter begin, Iter end) {
char decimalPoint = getDecimalPoint();
if (decimalPoint ==
'\0' || decimalPoint ==
'.') {
return;
}
for (; begin != end; ++begin) {
if (*begin ==
'.') {
*begin = decimalPoint;
}
}
}
/**
* Return iterator that would be the new end of the range [begin,end), if we
* were to delete zeros in the end of string, but not the last zero before '.'.
*/
template <
typename Iter>
Iter fixZerosInTheEnd(Iter begin, Iter end,
unsigned int precision) {
for (; begin != end; --end) {
if (*(end - 1) !=
'0') {
return end;
}
// Don't delete the last zero before the decimal point.
if (begin != (end - 1) && begin != (end - 2) && *(end - 2) ==
'.') {
if (precision) {
return end;
}
return end - 2;
}
}
return end;
}
}
// namespace Json
#endif // LIB_JSONCPP_JSON_TOOL_H_INCLUDED