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hilbert-os/euler/source/io/fopen.cpp

54 lines
1 KiB
C++

#include <stdint.h>
#include <cstring>
#include <cstdio>
namespace std {
FILE *fopen(const char *filename, const char *mode) {
bool read = false;
bool write = false;
bool append = false;
bool extended = false;
bool create = false;
for (const char *p = mode; *p; ++p)
switch (*p) {
case 'r':
read = true;
continue;
case 'w':
write = true;
continue;
case 'a':
append = true;
continue;
case '+':
extended = true;
continue;
case 'x':
create = true;
continue;
default:
continue;
}
__euler_stream_handle handle;
__euler_stream_result res = __euler_open_file(
filename, strlen(filename), handle, write || append, create);
if (res != __EULER_SR_SUCCESS)
return 0;
euler::file_stream *f = new euler::file_stream(handle, read || extended,
write || extended, write && !append, append);
if (f->good)
return f;
delete f;
return 0;
}
}