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/*
Copyright (C) 2025 Mikael Hildenborg
SPDX-License-Identifier: BSD-2-Clause
*/
#include <_ansi.h>
#include "atari-gem_errno.h"
#include "atari-traps.h"
int chdir(const char *path)
{
int err = GEM_E_OK;
if (path != 0)
{
if (path[1] == ':')
{
unsigned int drives = 0;
unsigned short drive = 0;
if (path[0] >= 'A' && path[0] <= 'Z')
{
drive = (unsigned short)(path[0] - 'A');
}
else if (path[0] >= 'a' && path[0] <= 'z')
{
drive = (unsigned short)(path[0] - 'a');
}
drives = trap1_e(drive);
if ((drives & (1 << drive)) == 0)
{
err = GEM_EDRIVE;
}
path += 2;
}
if (err == GEM_E_OK)
{
err = trap1_3b(path);
}
}
else
{
err = GEM_EPTHNF;
}
if (err < 0)
{
gem_error_to_errno(err);
return -1;
}
return 0;
}
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