X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fio%2Ffile.h;h=f23cc93e7d013b71dc33cbe060cd83ce939fbe4a;hp=05aaf9565a08653f278773e010fee4acb6361779;hb=HEAD;hpb=c7afef88380ebebc8c2b04e48664d73281ec8848

diff --git a/source/io/file.h b/source/io/file.h
index 05aaf95..2af56ae 100644
--- a/source/io/file.h
+++ b/source/io/file.h
@@ -1,28 +1,45 @@
 #ifndef MSP_IO_FILE_H_
 #define MSP_IO_FILE_H_
 
+#include <stdexcept>
 #include <string>
-#include "base.h"
+#include <msp/core/mspcore_api.h>
 #include "buffered.h"
-#include "filtered.h"
-#include "seek.h"
+#include "handle.h"
+#include "seekable.h"
 
 namespace Msp {
 namespace IO {
 
+class MSPCORE_API file_not_found: public std::runtime_error
+{
+public:
+	file_not_found(const std::string &fn): std::runtime_error(fn) { }
+};
+
+class MSPCORE_API file_already_exists: public std::runtime_error
+{
+public:
+	file_already_exists(const std::string &fn): std::runtime_error(fn) { }
+};
+
+
 /**
 A class for reading and writing files.
 
 Non-blocking mode is not supported on Win32.
 */
-class File: public Base
+class MSPCORE_API File: public Seekable
 {
 public:
 	enum CreateMode
 	{
 		C_NONE = 0,
 		C_CREATE = 1,
-		C_TRUNCATE = 2
+		C_TRUNCATE = 2,
+		C_OVERWRITE = C_CREATE+C_TRUNCATE,
+		C_EXCLUSIVE = 4,
+		C_NEW = C_CREATE+C_EXCLUSIVE
 	};
 
 private:
@@ -32,32 +49,26 @@ 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();
+	File(const std::string &, Mode = M_READ, CreateMode = C_OVERWRITE);
+private:
+	void platform_init(const std::string &, CreateMode);
+public:
+	~File() override;
 
-	void set_block(bool);
+	void set_block(bool) override;
+	void set_inherit(bool) override;
 
 protected:
-	virtual unsigned do_write(const char *, unsigned);
-	virtual unsigned do_read(char *, unsigned);
+	std::size_t do_write(const char *, std::size_t) override;
+	std::size_t do_read(char *, std::size_t) override;
 
 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;
+	void sync();
 
-	virtual Handle get_event_handle() { return handle; }
+	SeekOffset seek(SeekOffset, SeekType) override;
+	SeekOffset tell() const override;
 
-private:
-	void check_access(Mode) const;
+	const Handle &get_handle(Mode) override;
 };
 
 inline File::CreateMode operator|(File::CreateMode m, File::CreateMode n)
@@ -69,7 +80,34 @@ inline File::CreateMode operator&(File::CreateMode m, File::CreateMode n)
 inline File::CreateMode operator~(File::CreateMode m)
 { return File::CreateMode(~static_cast<int>(m)); }
 
-typedef Filtered<File, Buffered> BufferedFile;
+
+class MSPCORE_API BufferedFile: public Seekable
+{
+private:
+	File file;
+	Buffered buffer;
+	SeekOffset position;
+
+public:
+	BufferedFile(const std::string &, Mode = M_READ, File::CreateMode = File::C_OVERWRITE);
+
+	void set_block(bool) override;
+	void set_inherit(bool) override;
+
+protected:
+	std::size_t do_write(const char *, std::size_t) override;
+	std::size_t do_read(char *, std::size_t) override;
+public:
+	std::size_t put(char) override;
+
+	bool getline(std::string &) override;
+	int get() override;
+
+	const Handle &get_handle(Mode) override;
+
+	SeekOffset seek(SeekOffset, SeekType) override;
+	SeekOffset tell() const override { return position; }
+};
 
 } // namespace IO
 } // namespace Msp