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//-----------------------------------------------------------------------------
/** @file libboardgame_base/StringRep.cpp
@author Markus Enzenberger
@copyright GNU General Public License version 3 or later */
//-----------------------------------------------------------------------------
#include "StringRep.h"
#include <cctype>
#include <iostream>
#include "StringUtil.h"
namespace libboardgame_base {
//-----------------------------------------------------------------------------
bool StdStringRep::read(string::const_iterator begin,
string::const_iterator end, unsigned width,
unsigned height, unsigned& x, unsigned& y) const
{
auto p = begin;
while (p != end && isspace(*p) != 0)
++p;
bool read_x = false;
x = 0;
int c;
while (p != end && isalpha(*p) != 0)
{
c = tolower(*(p++));
if (c < 'a' || c > 'z')
return false;
x = 26 * x + static_cast<unsigned>(c - 'a' + 1);
if (x > width)
return false;
read_x = true;
}
if (! read_x)
return false;
--x;
bool read_y = false;
y = 0;
while (p != end && isdigit(*p) != 0)
{
c = *(p++);
y = 10 * y + static_cast<unsigned>((c - '0'));
if (y > height)
return false;
read_y = true;
}
if (! read_y)
return false;
y = height - y;
while (p != end)
if (isspace(*(p++)) == 0)
return false;
return true;
}
void StdStringRep::write(
ostream& out, unsigned x, unsigned y, [[maybe_unused]] unsigned width,
unsigned height) const
{
out << get_letter_coord(x) << (height - y);
}
//-----------------------------------------------------------------------------
} // namespace libboardgame_base
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