Use size_t for sizes in I/O classes

[libs/core.git] / source / io / zlibcompressed.h

diff --git a/source/io/zlibcompressed.h b/source/io/zlibcompressed.h
index 1ee427413ddc1cc448338278fab543f19bbd2ca9..e4ae6e08f852f9b6228f7ff0f4b415d80a08de81 100644 (file)
--- a/source/io/zlibcompressed.h
+++ b/source/io/zlibcompressed.h
@@ -3,6 +3,7 @@
 
 #include <stdexcept>
 #include <string>
+#include <sigc++/trackable.h>
 #include "base.h"
 
 namespace Msp {
@@ -27,15 +28,16 @@ operates on top of another I/O object.
 To ensure proper termination of the compressed data stream, the ZlibCompressed
 object must be destroyed before the underlying object is closed.
 */
-class ZlibCompressed: public Base
+class ZlibCompressed: public Base, public sigc::trackable
 {
 private:
        struct Private;
 
        Base &below;
-       unsigned buffer_size;
+       std::size_t buffer_size;
        unsigned char *in_buffer;
        unsigned char *out_buffer;
+       bool stream_end;
        Private *priv;
 
 public:
@@ -44,12 +46,23 @@ public:
        compression quality, ranging from 1 (fastest) to 9 (best compression). */
        ZlibCompressed(Base &, unsigned level = 9);
 
+       /** Creates a zlib de/compression object.  Mode must be either read or
+       write, and compatible with the underlying object. */
+       ZlibCompressed(Base &, Mode, unsigned level = 9);
+
+private:
+       void init(unsigned);
+
+public:
        virtual ~ZlibCompressed();
 
+       virtual void set_block(bool);
+       virtual void set_inherit(bool);
+
        void flush();
 
 protected:
-       virtual unsigned do_write(const char *, unsigned);
+       virtual std::size_t do_write(const char *, std::size_t);
 
 private:
        /** Compresses data and writes it to the underlying object.  Returns true if
@@ -59,7 +72,9 @@ private:
        bool compress_data(int flush_mode);
 
 public:
-       virtual unsigned do_read(char *, unsigned);
+       virtual std::size_t do_read(char *, std::size_t);
+
+       virtual const Handle &get_handle(Mode);
 };
 
 } // namespace IO