// ==========================================================================
//                 SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2010, Knut Reinert, FU Berlin
// All rights reserved.
//
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//
// ==========================================================================
// Author: Hannes Hauswedell <hauswedell@mi.fu-berlin.de>
// ==========================================================================
// Collection of char checking functions
// ==========================================================================

// ==========================================================================
// We add documentation for Ctype.h here for completeness.
// ==========================================================================

/**
.Function.isalnum:
..summary:Check if character is alpha-numeric
..cat:Input/Output
..signature:isalnum(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/isalnum/
..see:http://www.cppreference.com/wiki/string/character_classes
..include:<cctype>
*/

/**
.Function.isalpha:
..summary:Check if character is a upper or lowercase letter
..cat:Input/Output
..signature:isalpha(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/isalpha/
..see:http://www.cppreference.com/wiki/string/character_classes
..include:<cctype>
*/

/**
.Function.isdigit:
..summary:Check if character is a digit
..cat:Input/Output
..signature:isdigit(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/isdigit/
..see:http://www.cppreference.com/wiki/string/character_classes
..include:<cctype>
*/

/**
.Function.iscntrl:
..summary:Check if character is a control character
..cat:Input/Output
..signature:iscntrl(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/iscntrl/
..see:http://www.cppreference.com/wiki/string/character_classes
..include:<cctype>
*/

/**
.Function.isprint:
..summary:Check if character is printable, i.e. not a control character
..cat:Input/Output
..signature:isprint(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/isprint/
..see:http://www.cppreference.com/wiki/string/character_classes
..see:Function.isgraph
..include:<cctype>
*/

/**
.Function.isgraph:
..summary:Check if character is printable and not white space
..cat:Input/Output
..signature:isgraph(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..see:http://www.cplusplus.com/reference/clibrary/cctype/isgraph/
..see:http://www.cppreference.com/wiki/string/character_classes
..see:Function.isprint
..see:Function.isspace
..include:<cctype>
*/


/**
.Function.isspace:
..summary:Check if character is a white-space character
..cat:Input/Output
..signature:isspace(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks: This is non-seqan, plain c and listed for completeness
..remarks: NOTE: White-Space contains more than space and tab characters, if you want to check for that, use Function.isblank instead!
..see:http://www.cplusplus.com/reference/clibrary/cctype/isspace/
..see:http://www.cppreference.com/wiki/string/character_classes
..see:Function.isblank
..include:<cctype>
*/

/**
.Function.isblank:
..summary:Check if character is either ' ' or '\t'
..cat:Input/Output
..signature:isblank(int c)
..param.c:the character to be checked
...type:nolink:$int$
..returns:$true$(non-zero) if the check is successful and $false$ (zero) otherwise
..remarks:This is non-seqan, specified in POSIX and listed for completeness.
..remarks:For visual studio, we define it ourselves.
..see:http://pubs.opengroup.org/onlinepubs/009695399/functions/isblank.html
..see:http://www.cppreference.com/wiki/string/character_classes
..see:Function.isspace
..include:seqan/stream.h
*/

#ifdef PLATFORM_WINDOWS_VS
// TODO(holtgrew): Adding basic/POSIX functions for OS that do not support them theirselves should go into platform.
inline
int isblank(int c)
{
    return (c == ' ') || (c == '\t');
}
#endif  // #ifdef PLATFORM_WINDOWS_VS