X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fio%2Ffile.h;fp=source%2Fio%2Ffile.h;h=05aaf9565a08653f278773e010fee4acb6361779;hb=6e0fd758970bcb5bad5e3f2454b694cc4d7b4b66;hp=0000000000000000000000000000000000000000;hpb=b97d4e9f86e90254ab9edef7ee62a910f6333c78;p=libs%2Fcore.git

diff --git a/source/io/file.h b/source/io/file.h
new file mode 100644
index 0000000..05aaf95
--- /dev/null
+++ b/source/io/file.h
@@ -0,0 +1,77 @@
+#ifndef MSP_IO_FILE_H_
+#define MSP_IO_FILE_H_
+
+#include <string>
+#include "base.h"
+#include "buffered.h"
+#include "filtered.h"
+#include "seek.h"
+
+namespace Msp {
+namespace IO {
+
+/**
+A class for reading and writing files.
+
+Non-blocking mode is not supported on Win32.
+*/
+class File: public Base
+{
+public:
+	enum CreateMode
+	{
+		C_NONE = 0,
+		C_CREATE = 1,
+		C_TRUNCATE = 2
+	};
+
+private:
+	Handle handle;
+
+public:
+	/** Creates a new file object and opens it.  If the create flag is set and
+	write access is requested and the file does exist, it is created.  Otherwise
+	a missing file is an error. */
+	File(const std::string &, Mode = M_READ, CreateMode = CreateMode(C_CREATE+C_TRUNCATE));
+	virtual ~File();
+
+	/** Closes the file.  Any attempt to access the file after this will cause
+	an exception to be thrown. */
+	void close();
+
+	void set_block(bool);
+
+protected:
+	virtual unsigned do_write(const char *, unsigned);
+	virtual unsigned do_read(char *, unsigned);
+
+public:
+	virtual void sync();
+
+	/** Changes the read/write offset of the file.  Returns the new offset. */
+	virtual int seek(int, SeekType);
+	
+	/** Returns the current read/write offset of the file. */
+	virtual int tell() const;
+
+	virtual Handle get_event_handle() { return handle; }
+
+private:
+	void check_access(Mode) const;
+};
+
+inline File::CreateMode operator|(File::CreateMode m, File::CreateMode n)
+{ return File::CreateMode(static_cast<int>(m)|static_cast<int>(n)); }
+
+inline File::CreateMode operator&(File::CreateMode m, File::CreateMode n)
+{ return File::CreateMode(static_cast<int>(m)&static_cast<int>(n)); }
+
+inline File::CreateMode operator~(File::CreateMode m)
+{ return File::CreateMode(~static_cast<int>(m)); }
+
+typedef Filtered<File, Buffered> BufferedFile;
+
+} // namespace IO
+} // namespace Msp
+
+#endif