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/*
* scan.c: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
* (c) 2007-2013 Jörg Wendel
*
* This code is distributed under the terms and conditions of the
* GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
*
*/
//***************************************************************************
// Includes
//***************************************************************************
#include <scan.h>
//***************************************************************************
// Scanner
//***************************************************************************
const char* Scan::delimiters = " ;,(){}[]\"";
const char* Scan::operators = " +-*:<>!=";
const char* Scan::whitespace = " ()";
const char* Scan::logicalOps = "|&";
const char* Scan::numprefix = "+-";
//***************************************************************************
// Scanner
//***************************************************************************
int Scan::eat(int aANP)
{
int i = 0;
int anp = aANP != na ? aANP : allowNumPrefix;
_last[0] = 0;
isStr = no;
skipWs();
while (p && *p && i < 1000)
{
if (*p == '"')
{
if (isStr)
{
p++;
break;
}
isStr = yes;
p++;
continue;
}
if (!isStr && isDelimiter(*p))
break;
if (isStr && *p == '"')
break;
if (i)
{
if (isOperator(*_last) && !isOperator(*p) && !isStr)
{
if (!isNum(*p))
break;
if (!anp || !isNumPrefix(*_last))
break;
}
if (!isOperator(*_last) && isOperator(*p) && !isStr)
break;
if (isNum(*_last) && !isNum(*p) && !isStr)
break;
}
if (*p != '"')
_last[i++] = *p;
p++;
}
_last[i] = 0;
return i == 0 ? fail : success;
}
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