mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-30 05:30:51 +00:00
82 lines
1.5 KiB
C++
82 lines
1.5 KiB
C++
#pragma once
|
|
|
|
#include <string>
|
|
#include <cstring>
|
|
|
|
|
|
namespace detail
|
|
{
|
|
bool startsWith(const std::string & s, const char * prefix, size_t prefix_size);
|
|
bool endsWith(const std::string & s, const char * suffix, size_t suffix_size);
|
|
}
|
|
|
|
|
|
inline bool startsWith(const std::string & s, const std::string & prefix)
|
|
{
|
|
return detail::startsWith(s, prefix.data(), prefix.size());
|
|
}
|
|
|
|
inline bool endsWith(const std::string & s, const std::string & suffix)
|
|
{
|
|
return detail::endsWith(s, suffix.data(), suffix.size());
|
|
}
|
|
|
|
|
|
/// strlen evaluated compile-time.
|
|
inline bool startsWith(const std::string & s, const char * prefix)
|
|
{
|
|
return detail::startsWith(s, prefix, strlen(prefix));
|
|
}
|
|
|
|
inline bool endsWith(const std::string & s, const char * suffix)
|
|
{
|
|
return detail::endsWith(s, suffix, strlen(suffix));
|
|
}
|
|
|
|
|
|
/// More efficient than libc, because doesn't respect locale.
|
|
|
|
inline bool isASCII(char c)
|
|
{
|
|
return static_cast<unsigned char>(c) < 0x80;
|
|
}
|
|
|
|
inline bool isAlphaASCII(char c)
|
|
{
|
|
return (c >= 'a' && c <= 'z')
|
|
|| (c >= 'A' && c <= 'Z');
|
|
}
|
|
|
|
inline bool isNumericASCII(char c)
|
|
{
|
|
return (c >= '0' && c <= '9');
|
|
}
|
|
|
|
inline bool isAlphaNumericASCII(char c)
|
|
{
|
|
return isAlphaASCII(c)
|
|
|| isNumericASCII(c);
|
|
}
|
|
|
|
inline bool isWordCharASCII(char c)
|
|
{
|
|
return isAlphaNumericASCII(c)
|
|
|| c == '_';
|
|
}
|
|
|
|
/// Works assuming isAlphaASCII.
|
|
inline char toLowerIfAlphaASCII(char c)
|
|
{
|
|
return c | 0x20;
|
|
}
|
|
|
|
inline char toUpperIfAlphaASCII(char c)
|
|
{
|
|
return c & (~0x20);
|
|
}
|
|
|
|
inline char alternateCaseIfAlphaASCII(char c)
|
|
{
|
|
return c ^ 0x20;
|
|
}
|