/home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-composable-kernel/checkouts/develop/include/rapidjson/internal/strfunc.h Source File

/home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-composable-kernel/checkouts/develop/include/rapidjson/internal/strfunc.h Source File#

Composable Kernel: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-composable-kernel/checkouts/develop/include/rapidjson/internal/strfunc.h Source File
strfunc.h
Go to the documentation of this file.
1 // Tencent is pleased to support the open source community by making RapidJSON available.
2 //
3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
4 //
5 // Licensed under the MIT License (the "License"); you may not use this file except
6 // in compliance with the License. You may obtain a copy of the License at
7 //
8 // http://opensource.org/licenses/MIT
9 //
10 // Unless required by applicable law or agreed to in writing, software distributed
11 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
12 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
13 // specific language governing permissions and limitations under the License.
14 
15 #ifndef RAPIDJSON_INTERNAL_STRFUNC_H_
16 #define RAPIDJSON_INTERNAL_STRFUNC_H_
17 
18 #include "../stream.h"
19 #include <cwchar>
20 
21 RAPIDJSON_NAMESPACE_BEGIN
22 namespace internal {
23 
25 
30 template <typename Ch>
31 inline SizeType StrLen(const Ch* s) {
32  RAPIDJSON_ASSERT(s != 0);
33  const Ch* p = s;
34  while (*p) ++p;
35  return SizeType(p - s);
36 }
37 
38 template <>
39 inline SizeType StrLen(const char* s) {
40  return SizeType(std::strlen(s));
41 }
42 
43 template <>
44 inline SizeType StrLen(const wchar_t* s) {
45  return SizeType(std::wcslen(s));
46 }
47 
49 
54 template<typename Ch>
55 inline int StrCmp(const Ch* s1, const Ch* s2) {
56  RAPIDJSON_ASSERT(s1 != 0);
57  RAPIDJSON_ASSERT(s2 != 0);
58  while(*s1 && (*s1 == *s2)) { s1++; s2++; }
59  return static_cast<unsigned>(*s1) < static_cast<unsigned>(*s2) ? -1 : static_cast<unsigned>(*s1) > static_cast<unsigned>(*s2);
60 }
61 
63 template<typename Encoding>
64 bool CountStringCodePoint(const typename Encoding::Ch* s, SizeType length, SizeType* outCount) {
65  RAPIDJSON_ASSERT(s != 0);
66  RAPIDJSON_ASSERT(outCount != 0);
67  GenericStringStream<Encoding> is(s);
68  const typename Encoding::Ch* end = s + length;
69  SizeType count = 0;
70  while (is.src_ < end) {
71  unsigned codepoint;
72  if (!Encoding::Decode(is, &codepoint))
73  return false;
74  count++;
75  }
76  *outCount = count;
77  return true;
78 }
79 
80 } // namespace internal
81 RAPIDJSON_NAMESPACE_END
82 
83 #endif // RAPIDJSON_INTERNAL_STRFUNC_H_
RAPIDJSON_ASSERT
#define RAPIDJSON_ASSERT(x)
Assertion.
Definition: rapidjson.h:437
RAPIDJSON_NAMESPACE_BEGIN
#define RAPIDJSON_NAMESPACE_BEGIN
provide custom rapidjson namespace (opening expression)
Definition: rapidjson.h:121
RAPIDJSON_NAMESPACE_END
#define RAPIDJSON_NAMESPACE_END
provide custom rapidjson namespace (closing expression)
Definition: rapidjson.h:124
internal
Definition: allocators.h:423
internal::StrLen
SizeType StrLen(const Ch *s)
Custom strlen() which works on different character types.
Definition: strfunc.h:31
internal::CountStringCodePoint
bool CountStringCodePoint(const typename Encoding::Ch *s, SizeType length, SizeType *outCount)
Returns number of code points in a encoded string.
Definition: strfunc.h:64
internal::StrCmp
int StrCmp(const Ch *s1, const Ch *s2)
Custom strcmpn() which works on different character types.
Definition: strfunc.h:55
SizeType
RAPIDJSON_NAMESPACE_BEGIN typedef unsigned SizeType
Size type (for string lengths, array sizes, etc.)
Definition: rapidjson.h:415
GenericStringStream
Read-only string stream.
Definition: stream.h:154
GenericStringStream::src_
const Ch * src_
Current read position.
Definition: stream.h:168