mpw/toolbox/os_internal.h

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#ifndef __mpw_os_internal_h__
#define __mpw_os_internal_h__
#include <deque>
#include <string>
namespace OS { namespace Internal {
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uint16_t errno_to_oserr(int xerrno);
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struct FDEntry
{
int refcount;
bool text;
bool resource;
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std::string filename;
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FDEntry() :
refcount(0),
text(false),
resource(false)
{}
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static std::deque<FDEntry> FDTable;
static FDEntry& allocate(int fd);
static FDEntry& allocate(int fd, std::string &&filename);
static FDEntry& allocate(int fd, const std::string &filename);
static ssize_t read(int fd, void *buffer, size_t count);
static ssize_t write(int fd, const void *buffer, size_t count);
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static int close(int fd, bool force = false);
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template<class F1, class F2>
static int32_t action(int fd, F1 good, F2 bad)
{
if (fd < 0 || fd >= FDTable.size())
{
return bad(fd);
}
auto &e = FDTable[fd];
if (e.refcount)
{
return good(fd, e);
}
else
{
return bad(fd);
}
}
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};
} }
#endif