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/*===========================================================================
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* About : A ScmCharPort implementation for singlebyte character stream
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* Copyright (C) 2005-2006 YamaKen <yamaken AT bp.iij4u.or.jp>
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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
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of authors 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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* 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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* - This file is intended to be portable. Don't depend on SigScheme.
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* - To isolate and hide implementation-dependent things, don't merge this file
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/*=======================================
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=======================================*/
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/*=======================================
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=======================================*/
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/* To override SCM_{CHAR,BYTE}PORT_ERROR() and SCM_PORT_*ALLOC(). Don't depend
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* on SigScheme-specific things */
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#include "sigscheme.h"
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#include "sigschemeinternal.h"
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/*=======================================
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File Local Macro Definitions
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=======================================*/
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/*=======================================
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File Local Type Definitions
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=======================================*/
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struct ScmSingleByteCharPort_ { /* inherits ScmBaseCharPort */
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const ScmCharPortVTbl *vptr;
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ScmBytePort *bport; /* protected */
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/*=======================================
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File Local Function Declarations
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=======================================*/
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static ScmCharPort *sbcport_dyn_cast(ScmCharPort *cport,
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const ScmCharPortVTbl *dst_vptr);
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static ScmCharCodec *sbcport_codec(ScmSingleByteCharPort *port);
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static char *sbcport_inspect(ScmSingleByteCharPort *port);
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static int sbcport_put_char(ScmSingleByteCharPort *port, scm_ichar_t ch);
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/*=======================================
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=======================================*/
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static ScmCharPortVTbl ScmSingleByteCharPort_vtbl;
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const ScmCharPortVTbl *ScmSingleByteCharPort_vptr = &ScmSingleByteCharPort_vtbl;
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static ScmCharCodec *codec;
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/*=======================================
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Function Implementations
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=======================================*/
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scm_sbcport_init(void)
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ScmCharPortVTbl *vptr;
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ScmSingleByteCharPort_vtbl = *ScmBaseCharPort_vptr;
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vptr = &ScmSingleByteCharPort_vtbl;
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vptr->dyn_cast = (ScmCharPortMethod_dyn_cast)&sbcport_dyn_cast;
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vptr->codec = (ScmCharPortMethod_codec)&sbcport_codec;
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vptr->inspect = (ScmCharPortMethod_inspect)&sbcport_inspect;
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vptr->put_char = (ScmCharPortMethod_put_char)&sbcport_put_char;
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codec = scm_mb_find_codec("ISO-8859-1");
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ScmSingleByteCharPort_construct(ScmSingleByteCharPort *port,
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const ScmCharPortVTbl *vptr,
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ScmBaseCharPort_construct((ScmBaseCharPort *)port, vptr, bport);
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ScmSingleByteCharPort_new(ScmBytePort *bport)
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ScmSingleByteCharPort *cport;
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cport = SCM_PORT_MALLOC(sizeof(ScmSingleByteCharPort));
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ScmSingleByteCharPort_construct(cport, ScmSingleByteCharPort_vptr, bport);
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return (ScmCharPort *)cport;
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sbcport_dyn_cast(ScmCharPort *cport, const ScmCharPortVTbl *dst_vptr)
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return (dst_vptr == ScmBaseCharPort_vptr
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|| dst_vptr == ScmSingleByteCharPort_vptr) ? cport : NULL;
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static ScmCharCodec *
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sbcport_codec(ScmSingleByteCharPort *port)
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sbcport_inspect(ScmSingleByteCharPort *port)
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return ScmBaseCharPort_inspect((ScmBaseCharPort *)port, "sb");
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sbcport_put_char(ScmSingleByteCharPort *port, scm_ichar_t ch)
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return SCM_BYTEPORT_WRITE(port->bport, sizeof(char), buf);