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/*
*
* Copyright (C) 2010-2021, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: dcmdata
*
* Author: Uli Schlachter
*
* Purpose: Interface to the VR scanner.
*
*/
#include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */
#include "dcmtk/dcmdata/vrscan.h"
#include "dcmtk/ofstd/ofbmanip.h"
#include "dcmtk/ofstd/ofstd.h" /* For OFString::strerror() */
#include "dcmtk/dcmdata/dctypes.h" /* For DCMDATA_WARN() */
#include "dcmtk/ofstd/ofdiag.h"
BEGIN_EXTERN_C
#include "vrscani.h"
#include "vrscanl.h"
END_EXTERN_C
#include DCMTK_DIAGNOSTIC_PUSH
#include DCMTK_DIAGNOSTIC_IGNORE_VISUAL_STUDIO_OBJECT_DESTRUCTION_WARNING
int vrscan::scan(const OFString& vr, const char* const value, const size_t size)
{
yyscan_t scanner;
if (yylex_init(&scanner))
{
DCMDATA_WARN("Error while setting up lexer: "
<< OFStandard::getLastSystemErrorCode().message());
return 16 /* UNKNOWN */;
}
struct cleanup_t
{
cleanup_t(yyscan_t& y) : t(y) {}
~cleanup_t() { yylex_destroy(t); }
yyscan_t& t;
}
cleanup(scanner);
OFString buffer;
buffer.reserve(vr.size() + size + 2);
buffer.append(vr);
buffer.append(value, size);
buffer.append("\0\0", 2); // yy_scan_buffer() requires this
struct vrscan_error error;
error.error_msg = "(Unknown error)";
yyset_extra(&error, scanner);
if (setjmp(error.setjmp_buffer)) // poor man's catch()
{
DCMDATA_WARN("Fatal error in lexer: " << error.error_msg);
return 16 /* UNKNOWN */;
}
yy_scan_buffer(OFconst_cast(char*, buffer.data()), buffer.size(), scanner);
const int result = yylex(scanner);
if (yylex(scanner))
return 16 /* UNKNOWN */;
return result;
}
#include DCMTK_DIAGNOSTIC_POP
int vrscan::scan(const OFString& vr, const OFString& value)
{
return scan(vr, value.data(), value.size());
}
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