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#ifndef __FILEINPUTSTREAM_H__
#define __FILEINPUTSTREAM_H__
#include <fstream>
#include "InputStream.h"
class FileInputStream : public InputStream {
public:
bool Open (const char* fileName) {
file_.open (fileName, std::ios_base::in | std::ios_base::binary);
return file_.is_open();
}
int read (void* ptr, size_t len) {
if (!file_.good()) {
return -1;
}
file_.read (static_cast<char*> (ptr), len);
return (int) file_.gcount();
}
private:
std::ifstream file_;
};
#endif //__FILEINPUTSTREAM_H__
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