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core: backport toLowerCase()/toUpperCase()

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This commit is contained in:
Alexander Alekhin 2019-06-18 15:35:16 +03:00
parent baf372ad3d
commit 681e0323f2
1 changed files with 34 additions and 0 deletions
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34
modules/core/include/opencv2/core/cvstd.hpp
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@ -1026,6 +1026,40 @@ static inline bool operator>= (const String& lhs, const String& rhs) { return lh
static inline bool operator>= (const char* lhs, const String& rhs) { return rhs.compare(lhs) <= 0; }
static inline bool operator>= (const String& lhs, const char* rhs) { return lhs.compare(rhs) >= 0; }
#ifndef OPENCV_DISABLE_STRING_LOWER_UPPER_CONVERSIONS
//! @cond IGNORED
namespace details {
// std::tolower is int->int
static inline char char_tolower(char ch)
{
return (char)std::tolower((int)ch);
}
// std::toupper is int->int
static inline char char_toupper(char ch)
{
return (char)std::toupper((int)ch);
}
} // namespace details
//! @endcond
static inline std::string toLowerCase(const std::string& str)
{
std::string result(str);
std::transform(result.begin(), result.end(), result.begin(), details::char_tolower);
return result;
}
static inline std::string toUpperCase(const std::string& str)
{
std::string result(str);
std::transform(result.begin(), result.end(), result.begin(), details::char_toupper);
return result;
}
#endif // OPENCV_DISABLE_STRING_LOWER_UPPER_CONVERSIONS
//! @} relates cv::String
} // cv