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/*
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 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. Neither the name of The TenDRA Project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific, prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * $Id$
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 */
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/*
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    		 Crown Copyright (c) 1997
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    This TenDRA(r) Computer Program is subject to Copyright
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    owned by the United Kingdom Secretary of State for Defence
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    acting through the Defence Evaluation and Research Agency
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    (DERA).  It is made available to Recipients with a
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    royalty-free licence for its use, reproduction, transfer
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    to other parties and amendment for any purpose not excluding
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    product development provided that any such use et cetera
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    shall be deemed to be acceptance of the following conditions:-
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        (1) Its Recipients shall ensure that this Notice is
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        reproduced upon any copies or amended versions of it;
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        (2) Any amended version of it shall be clearly marked to
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        show both the nature of and the organisation responsible
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        for the relevant amendment or amendments;
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        (3) Its onward transfer from a recipient to another
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        party shall be deemed to be that party's acceptance of
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        these conditions;
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        (4) DERA gives no warranty or assurance as to its
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        quality or suitability for any purpose and DERA accepts
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        no liability whatsoever in relation to any use to which
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        it may be put.
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*/
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/*** tdf-write.c --- TDF writer ADT.
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 *
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 ** Author: Steve Folkes <smf@hermes.mod.uk>
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 *
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 *** Commentary:
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 *
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 * This file implements the TDF writer routines used by the TDF linker.
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 *
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 *** Change Log:
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 * $Log: tdf-write.c,v $
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 * Revision 1.1.1.1  1998/01/17  15:57:20  release
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 * First version to be checked into rolling release.
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 *
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 * Revision 1.3  1995/09/22  08:39:40  smf
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 * Fixed problems with incomplete structures (to shut "tcc" up).
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 * Fixed some problems in "name-key.c" (no real problems, but rewritten to
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 * reduce the warnings that were output by "tcc" and "gcc").
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 * Fixed bug CR95_354.tld-common-id-problem (library capsules could be loaded
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 * more than once).
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 *
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 * Revision 1.2  1994/12/12  11:46:58  smf
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 * Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
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 * OSSG C Coding Standards.
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 *
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 * Revision 1.1.1.1  1994/07/25  16:03:39  smf
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 * Initial import of TDF linker 3.5 non shared files.
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 *
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**/
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/****************************************************************************/
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#include "tdf-write.h"
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#include "gen-errors.h"
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#include "ostream.h"
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#include "solve-cycles.h"
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/*--------------------------------------------------------------------------*/
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static void
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tdf_write_nibble(TDFWriterP writer,			  unsigned   nibble)
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{
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    if (writer->new_byte) {
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	writer->new_byte = FALSE;
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	writer->byte     = (ByteT)((nibble & 0x0F) << 4);
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    } else {
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	writer->new_byte = TRUE;
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	writer->byte    |= (ByteT)(nibble & 0x0F);
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	bostream_write_byte(& (writer->bostream), writer->byte);
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    }
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}
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/*--------------------------------------------------------------------------*/
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BoolT
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tdf_writer_open(TDFWriterP writer,			 CStringP   name)
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{
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    writer->new_byte = TRUE;
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    if (!bostream_open(& (writer->bostream), name)) {
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	return(FALSE);
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    }
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    return(TRUE);
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}
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CStringP
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tdf_writer_name(TDFWriterP writer)
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{
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    return(bostream_name(& (writer->bostream)));
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}
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void
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tdf_write_int(TDFWriterP writer,		       unsigned   value)
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{
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    unsigned shift = 0;
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    unsigned tmp   = value;
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    unsigned mask  = (~(unsigned)0x07);
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    while (tmp & mask) {
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	tmp >>= 3;
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	shift++;
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    }
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    while (shift) {
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	tmp = ((value >> (3 * shift)) & 0x07);
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	shift--;
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	tdf_write_nibble(writer, tmp);
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    }
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    tmp = ((value & 0x07) | 0x08);
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    tdf_write_nibble(writer, tmp);
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}
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void
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tdf_write_align(TDFWriterP writer)
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{
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    if (!(writer->new_byte)) {
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	bostream_write_byte(& (writer->bostream), writer->byte);
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	writer->new_byte = TRUE;
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    }
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}
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void
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tdf_write_bytes(TDFWriterP writer,			 NStringP   nstring)
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{
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    unsigned length   = nstring_length(nstring);
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    CStringP contents = nstring_contents(nstring);
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    tdf_write_align(writer);
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    bostream_write_chars(& (writer->bostream), length, contents);
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}
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void
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tdf_write_string(TDFWriterP writer,			  NStringP   nstring)
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{
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    unsigned length = nstring_length(nstring);
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    tdf_write_int(writer,(unsigned)8);
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    tdf_write_int(writer, length);
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    tdf_write_bytes(writer, nstring);
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}
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180 
void
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tdf_write_name(TDFWriterP writer,			NameKeyP   name)
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{
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    unsigned  type;
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    unsigned  components;
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    unsigned  i;
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    NStringP  nstring;
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    switch (name_key_type(name))EXHAUSTIVE {
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      case KT_STRING:
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	type = (unsigned)(0x1 << 2);
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	tdf_write_nibble(writer, type);
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	tdf_write_align(writer);
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	tdf_write_string(writer, name_key_string(name));
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	break;
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      case KT_UNIQUE:
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	type = (unsigned)(0x2 << 2);
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	tdf_write_nibble(writer, type);
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	tdf_write_align(writer);
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	components = name_key_components(name);
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	tdf_write_int(writer, components);
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	for (i = 0; i < components; i++) {
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	    nstring = name_key_get_component(name, i);
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	    tdf_write_string(writer, nstring);
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	}
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	break;
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    }
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}
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209 
void
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tdf_writer_close(TDFWriterP writer)
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{
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    tdf_write_align(writer);
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    bostream_close(& (writer->bostream));
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}
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/*
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 * Local variables(smf):
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 * eval: (include::add-path-entry "../os-interface" "../library")
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 * eval: (include::add-path-entry "../generated")
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 * end:
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**/