Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtinfo/DtMmdb/object/compressed_pstring.C

@@ -0,0 +1,186 @@
+/*
+ * $XConsortium: compressed_pstring.cc /main/4 1996/06/11 17:23:44 cde-hal $
+ *
+ * Copyright (c) 1992 HAL Computer Systems International, Ltd.
+ * All rights reserved.  Unpublished -- rights reserved under
+ * the Copyright Laws of the United States.  USE OF A COPYRIGHT
+ * NOTICE IS PRECAUTIONARY ONLY AND DOES NOT IMPLY PUBLICATION
+ * OR DISCLOSURE.
+ * 
+ * THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION AND TRADE
+ * SECRETS OF HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.  USE,
+ * DISCLOSURE, OR REPRODUCTION IS PROHIBITED WITHOUT THE
+ * PRIOR EXPRESS WRITTEN PERMISSION OF HAL COMPUTER SYSTEMS
+ * INTERNATIONAL, LTD.
+ * 
+ *                         RESTRICTED RIGHTS LEGEND
+ * Use, duplication, or disclosure by the Government is subject
+ * to the restrictions as set forth in subparagraph (c)(l)(ii)
+ * of the Rights in Technical Data and Computer Software clause
+ * at DFARS 252.227-7013.
+ *
+ *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
+ *                  1315 Dell Avenue
+ *                  Campbell, CA  95008
+ * 
+ */
+
+
+#include "object/compressed_pstring.h"
+
+#ifdef C_API
+buffer* compressed_pstring::working_buffer_ptr;
+buffer* compressed_pstring::v_cp_io_buf_ptr;
+#define working_buffer (*working_buffer_ptr)
+#define v_cp_io_buf (*v_cp_io_buf_ptr)
+// for pstring's buffer
+#define v_io_buf (*v_io_buf_ptr) 
+#else
+buffer compressed_pstring::working_buffer(LBUFSIZ);
+buffer compressed_pstring::v_cp_io_buf(LBUFSIZ);
+#endif
+
+
+compressed_pstring::compressed_pstring(c_code_t c_id) : 
+   pstring(c_id), agent(0), v_uncompressed_sz(0)
+{
+}
+
+compressed_pstring::~compressed_pstring()
+{
+}
+
+MMDB_BODIES(compressed_pstring)
+
+char* compressed_pstring::get(buffer& string_buffer)
+{
+//MESSAGE(cerr, "compressed_pstring::get()");
+//debug(cerr, v_uncompressed_sz);
+
+
+   string_buffer.reset();
+   string_buffer.expand_chunk(v_uncompressed_sz+1);
+
+   pstring::get(working_buffer);
+
+// use cached version of compression agent
+//debug(cerr, compress_agent_id);
+
+   if ( (storage_ptr -> my_oid()).ccode() ==  MEM_STORAGE_CODE )
+      agent = (compress_agent_handler*)
+	(new handler(DICT_AGENT_CODE, storage_ptr));
+   else
+      agent = new compress_agent_handler(compress_agent_id, storage_ptr);
+
+   (*agent) -> decompress(working_buffer, string_buffer);
+
+   delete agent;
+
+   string_buffer.get_base()[v_uncompressed_sz] = 0;
+
+//MESSAGE(cerr, "compressed_pstring::get() done");
+   return string_buffer.get_base();
+}
+
+io_status compressed_pstring::asciiIn(istream& in) 
+{
+   compress_agent_id.asciiIn(in);	// compress agent oid part
+//debug(cerr, compress_agent_id);
+   return this -> _asciiIn(in);
+}
+
+io_status compressed_pstring::asciiIn(const char* buf, int size, const oid_t& id) 
+{
+   compress_agent_id.become(id);	// compress agent oid part
+   return this -> _asciiIn(buf, size);
+}
+
+io_status compressed_pstring::asciiIn(const char* buf, int size) 
+{
+   return pstring::asciiIn(buf, size);
+}
+
+io_status compressed_pstring::_asciiIn(istream& in) 
+{
+// use cached version of compression agent
+
+   if ( (storage_ptr -> my_oid()).ccode() ==  MEM_STORAGE_CODE )
+      agent = (compress_agent_handler*)
+	(new handler(DICT_AGENT_CODE, storage_ptr));
+   else
+      agent = new compress_agent_handler(compress_agent_id, storage_ptr);
+
+   pstring::_asciiIn(in);
+
+   _compress();
+
+   return done;
+}
+
+io_status compressed_pstring::_asciiIn(const char* buf, int size) 
+{
+// use cached version of compression agent
+   if ( (storage_ptr -> my_oid()).ccode() == MEM_STORAGE_CODE )
+      agent = (compress_agent_handler*)
+	(new handler(DICT_AGENT_CODE, storage_ptr));
+   else
+      agent = new compress_agent_handler(compress_agent_id, storage_ptr);
+
+   pstring::asciiIn(buf, size); 	// uncompress data part
+
+   _compress();
+
+   return done;
+}
+
+void compressed_pstring::_compress() 
+{
+   v_uncompressed_sz = v_io_buf.content_sz();
+
+   if ( v_uncompressed_sz > 0 ) {
+
+      working_buffer.reset();
+
+      (*agent) -> compress(v_io_buf, working_buffer);
+
+//debug(cerr, v_uncompressed_sz);
+//debug(cerr, working_buffer.content_sz());
+
+      pstring::update(working_buffer.get_base(),  working_buffer.content_sz());
+   }
+
+   set_mode(UPDATE, true);
+
+   delete agent;
+
+}
+
+int compressed_pstring::size() const
+{
+   return v_uncompressed_sz;
+}
+
+int compressed_pstring::cdr_sizeof()
+{
+   return pstring::cdr_sizeof() + sizeof(v_uncompressed_sz) + 
+          compress_agent_id.cdr_sizeof(); 
+}
+
+io_status compressed_pstring::cdrOut(buffer& buf)
+{
+//MESSAGE(cerr, "compressed_pstring: cdrOut()");
+//debug(cerr, compress_agent_id);
+
+   pstring::cdrOut(buf);
+   buf.put(v_uncompressed_sz);
+   return compress_agent_id.cdrOut(buf);
+}
+
+io_status compressed_pstring::cdrIn(buffer& buf)
+{
+   pstring::cdrIn(buf);
+   buf.get(v_uncompressed_sz);
+   return compress_agent_id.cdrIn(buf);
+}
+
+HANDLER_BODIES(compressed_pstring)