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// file : butl/utility.ixx -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef _WIN32
# include <strings.h> // strcasecmp(), strncasecmp()
#else
# include <string.h> // _stricmp(), _strnicmp()
#endif
#include <cctype> // toupper(), tolower(), isalpha(), isdigit(), isalnum()
namespace butl
{
inline char
ucase (char c)
{
return std::toupper (c);
}
inline void
ucase (char* s, std::size_t n)
{
for (const char* e (s + n); s != e; ++s)
*s = ucase (*s);
}
inline std::string&
ucase (std::string& s)
{
if (size_t n = s.size ())
{
s.front () = s.front (); // Force copy in CoW.
ucase (const_cast<char*> (s.data ()), n);
}
return s;
}
inline std::string
ucase (const char* s, std::size_t n)
{
std::string r (s, n == std::string::npos ? std::strlen (s) : n);
return ucase (r);
}
inline std::string
ucase (const std::string& s)
{
return ucase (s.c_str (), s.size ());
}
inline char
lcase (char c)
{
return std::tolower (c);
}
inline void
lcase (char* s, std::size_t n)
{
for (const char* e (s + n); s != e; ++s)
*s = lcase (*s);
}
inline std::string&
lcase (std::string& s)
{
if (size_t n = s.size ())
{
s.front () = s.front (); // Force copy in CoW.
lcase (const_cast<char*> (s.data ()), n);
}
return s;
}
inline std::string
lcase (const char* s, std::size_t n)
{
std::string r (s, n == std::string::npos ? std::strlen (s) : n);
return lcase (r);
}
inline std::string
lcase (const std::string& s)
{
return lcase (s.c_str (), s.size ());
}
inline int
casecmp (char l, char r)
{
l = lcase (l);
r = lcase (r);
return l < r ? -1 : (l > r ? 1 : 0);
}
inline int
casecmp (const char* l, const char* r, std::size_t n)
{
#ifndef _WIN32
return n == std::string::npos ? strcasecmp (l, r) : strncasecmp (l, r, n);
#else
return n == std::string::npos ? _stricmp (l, r) : _strnicmp (l, r, n);
#endif
}
inline int
casecmp (const std::string& l, const std::string& r, std::size_t n)
{
return casecmp (l.c_str (), r.c_str (), n);
}
inline int
casecmp (const std::string& l, const char* r, std::size_t n)
{
return casecmp (l.c_str (), r, n);
}
inline bool
alpha (char c)
{
return std::isalpha (c);
}
inline bool
digit (char c)
{
return std::isdigit (c);
}
inline bool
alnum (char c)
{
return std::isalnum (c);
}
}
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