Make certain functions pure virtual so I won't forget to implement them

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

diff --git a/source/io/zlibcompressed.cpp b/source/io/zlibcompressed.cpp
index 90b54a214bed69ce272952e3ebad8ca05e6ff1d4..99ae7f81f8845016e73e92d60f13083e7e672ee6 100644 (file)
--- a/source/io/zlibcompressed.cpp
+++ b/source/io/zlibcompressed.cpp
@@ -38,18 +38,32 @@ ZlibCompressed::Private::Private()
 
 
 ZlibCompressed::ZlibCompressed(Base &b, unsigned level):
-       below(b),
-       buffer_size(1024),
-       in_buffer(0),
-       out_buffer(0),
-       stream_end(false),
-       priv(0)
+       below(b)
 {
-#ifdef WITH_ZLIB
        mode = below.get_mode()&M_RDWR;
        if(mode!=M_READ && mode!=M_WRITE)
                throw invalid_access(mode);
 
+       init(level);
+}
+
+ZlibCompressed::ZlibCompressed(Base &b, Mode m, unsigned level):
+       below(b)
+{
+       mode = m&below.get_mode()&M_RDWR;
+       if(mode!=M_READ && mode!=M_WRITE)
+               throw invalid_access(m);
+
+       init(level);
+}
+
+void ZlibCompressed::init(unsigned level)
+{
+#ifdef WITH_ZLIB
+       buffer_size = 1024;
+       in_buffer = 0;
+       out_buffer = 0;
+       stream_end = false;
        priv = new Private;
 
        if(mode==M_WRITE)
@@ -75,6 +89,8 @@ ZlibCompressed::ZlibCompressed(Base &b, unsigned level):
 
        below.signal_flush_required.connect(sigc::mem_fun(this, &ZlibCompressed::flush));
 #else
+       (void)buffer_size;
+       (void)stream_end;
        (void)level;
        throw zlib_error("unsupported", -1);
 #endif
@@ -97,6 +113,11 @@ ZlibCompressed::~ZlibCompressed()
        delete priv;
 }
 
+void ZlibCompressed::set_block(bool)
+{
+       throw logic_error("ZlibCompressed::set_block");
+}
+
 void ZlibCompressed::flush()
 {
 #ifdef WITH_ZLIB
@@ -252,5 +273,10 @@ unsigned ZlibCompressed::do_read(char *data, unsigned size)
        return processed;
 }
 
+const Handle &ZlibCompressed::get_handle(Mode)
+{
+       throw logic_error("ZlibCompressed::get_handle");
+}
+
 } // namespace IO
 } // namespace Msp