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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/* -*- compile-command: "cd ../linux && make MEMDEBUG=TRUE -j3"; -*- */
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/*
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* Copyright 2020 by Eric House (xwords@eehouse.org). All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "device.h"
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#include "comtypes.h"
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#include "memstream.h"
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#include "xwstream.h"
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#ifdef XWFEATURE_DEVICE
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# define KEY_DEVSTATE PERSIST_KEY("devState")
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typedef struct _DevCtxt {
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XP_U16 devCount;
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} DevCtxt;
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static XWStreamCtxt*
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mkStream( XW_DUtilCtxt* dutil )
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{
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XWStreamCtxt* stream = mem_stream_make_raw( MPPARM(dutil->mpool)
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dutil_getVTManager(dutil) );
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return stream;
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}
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static DevCtxt*
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load( XW_DUtilCtxt* dutil, XWEnv xwe )
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{
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LOG_FUNC();
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DevCtxt* state = (DevCtxt*)dutil->devCtxt;
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if ( NULL == state ) {
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XWStreamCtxt* stream = mkStream( dutil );
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dutil_loadStream( dutil, xwe, KEY_DEVSTATE, stream );
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state = XP_CALLOC( dutil->mpool, sizeof(*state) );
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dutil->devCtxt = state;
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if ( 0 < stream_getSize( stream ) ) {
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state->devCount = stream_getU16( stream );
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++state->devCount; /* for testing until something's there */
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/* XP_LOGF( "%s(): read devCount: %d", __func__, state->devCount ); */
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} else {
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XP_LOGF( "%s(): empty stream!!", __func__ );
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}
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stream_destroy( stream, NULL );
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}
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return state;
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}
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void
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device_store( XW_DUtilCtxt* dutil, XWEnv xwe )
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{
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LOG_FUNC();
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DevCtxt* state = load( dutil, xwe );
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XWStreamCtxt* stream = mkStream( dutil );
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stream_putU16( stream, state->devCount );
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dutil_storeStream( dutil, xwe, KEY_DEVSTATE, stream );
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stream_destroy( stream, NULL );
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XP_FREEP( dutil->mpool, &dutil->devCtxt );
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}
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#endif
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