mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-15 08:26:56 +00:00
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Tencent is pleased to support the open source community by making RapidJSON available.
|
|
//
|
|
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
|
|
//
|
|
// Licensed under the MIT License (the "License"); you may not use this file except
|
|
// in compliance with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://opensource.org/licenses/MIT
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software distributed
|
|
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations under the License.
|
|
|
|
#ifndef RAPIDJSON_INTERNAL_STRFUNC_H_
|
|
#define RAPIDJSON_INTERNAL_STRFUNC_H_
|
|
|
|
#include "../stream.h"
|
|
#include <cwchar>
|
|
|
|
RAPIDJSON_NAMESPACE_BEGIN
|
|
namespace internal {
|
|
|
|
//! Custom strlen() which works on different character types.
|
|
/*! \tparam Ch Character type (e.g. char, wchar_t, short)
|
|
\param s Null-terminated input string.
|
|
\return Number of characters in the string.
|
|
\note This has the same semantics as strlen(), the return value is not number of Unicode codepoints.
|
|
*/
|
|
template <typename Ch>
|
|
inline SizeType StrLen(const Ch* s) {
|
|
RAPIDJSON_ASSERT(s != 0);
|
|
const Ch* p = s;
|
|
while (*p) ++p;
|
|
return SizeType(p - s);
|
|
}
|
|
|
|
template <>
|
|
inline SizeType StrLen(const char* s) {
|
|
return SizeType(std::strlen(s));
|
|
}
|
|
|
|
template <>
|
|
inline SizeType StrLen(const wchar_t* s) {
|
|
return SizeType(std::wcslen(s));
|
|
}
|
|
|
|
//! Returns number of code points in a encoded string.
|
|
template<typename Encoding>
|
|
bool CountStringCodePoint(const typename Encoding::Ch* s, SizeType length, SizeType* outCount) {
|
|
RAPIDJSON_ASSERT(s != 0);
|
|
RAPIDJSON_ASSERT(outCount != 0);
|
|
GenericStringStream<Encoding> is(s);
|
|
const typename Encoding::Ch* end = s + length;
|
|
SizeType count = 0;
|
|
while (is.src_ < end) {
|
|
unsigned codepoint;
|
|
if (!Encoding::Decode(is, &codepoint))
|
|
return false;
|
|
count++;
|
|
}
|
|
*outCount = count;
|
|
return true;
|
|
}
|
|
|
|
} // namespace internal
|
|
RAPIDJSON_NAMESPACE_END
|
|
|
|
#endif // RAPIDJSON_INTERNAL_STRFUNC_H_
|