CMake/Source/cmAlgorithms.h

152 lines
3.7 KiB
C++

/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2015 Stephen Kelly <steveire@gmail.com>
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmAlgorithms_h
#define cmAlgorithms_h
#include "cmStandardIncludes.h"
inline bool cmHasLiteralPrefixImpl(const std::string &str1,
const char *str2,
size_t N)
{
return strncmp(str1.c_str(), str2, N) == 0;
}
inline bool cmHasLiteralPrefixImpl(const char* str1,
const char *str2,
size_t N)
{
return strncmp(str1, str2, N) == 0;
}
inline bool cmHasLiteralSuffixImpl(const std::string &str1,
const char *str2,
size_t N)
{
size_t len = str1.size();
return len >= N && strcmp(str1.c_str() + len - N, str2) == 0;
}
inline bool cmHasLiteralSuffixImpl(const char* str1,
const char* str2,
size_t N)
{
size_t len = strlen(str1);
return len >= N && strcmp(str1 + len - N, str2) == 0;
}
template<typename T, size_t N>
const T* cmArrayBegin(const T (&a)[N]) { return a; }
template<typename T, size_t N>
const T* cmArrayEnd(const T (&a)[N]) { return a + N; }
template<typename T, size_t N>
size_t cmArraySize(const T (&)[N]) { return N; }
template<typename T, size_t N>
bool cmHasLiteralPrefix(T str1, const char (&str2)[N])
{
return cmHasLiteralPrefixImpl(str1, str2, N - 1);
}
template<typename T, size_t N>
bool cmHasLiteralSuffix(T str1, const char (&str2)[N])
{
return cmHasLiteralSuffixImpl(str1, str2, N - 1);
}
struct cmStrCmp {
cmStrCmp(const char *test) : m_test(test) {}
cmStrCmp(const std::string &test) : m_test(test) {}
bool operator()(const std::string& input) const
{
return m_test == input;
}
bool operator()(const char * input) const
{
return strcmp(input, m_test.c_str()) == 0;
}
private:
const std::string m_test;
};
namespace ContainerAlgorithms {
template<typename T>
struct cmIsPair
{
enum { value = false };
};
template<typename K, typename V>
struct cmIsPair<std::pair<K, V> >
{
enum { value = true };
};
template<typename Container,
bool valueTypeIsPair = cmIsPair<typename Container::value_type>::value>
struct DefaultDeleter
{
void operator()(typename Container::value_type value) {
delete value;
}
};
template<typename Container>
struct DefaultDeleter<Container, /* valueTypeIsPair = */ true>
{
void operator()(typename Container::value_type value) {
delete value.second;
}
};
}
template<typename Container>
void cmDeleteAll(Container const& c)
{
std::for_each(c.begin(), c.end(),
ContainerAlgorithms::DefaultDeleter<Container>());
}
template<typename Range>
std::string cmJoin(Range const& r, const char* delimiter)
{
if (r.empty())
{
return std::string();
}
std::ostringstream os;
typedef typename Range::value_type ValueType;
typedef typename Range::const_iterator InputIt;
InputIt first = r.begin();
InputIt last = r.end();
--last;
std::copy(first, last,
std::ostream_iterator<ValueType>(os, delimiter));
os << *last;
return os.str();
}
template<typename Range>
std::string cmJoin(Range const& r, std::string delimiter)
{
return cmJoin(r, delimiter.c_str());
};
#endif