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/*
* Copyright (C) 2007-2012 Xagasoft, All rights reserved.
*
* This file is part of the Xagasoft Build and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "functionmatches.h"
#include <unistd.h>
#include <bu/plugger.h>
PluginInterface3( pluginFunctionMatches, matches, FunctionMatches, Function,
"Mike Buland", 0, 1 );
FunctionMatches::FunctionMatches()
{
}
FunctionMatches::~FunctionMatches()
{
}
Bu::String FunctionMatches::getName() const
{
return "matches";
}
bool FunctionMatches::globcmp( const Bu::String &sTxt, const Bu::String &sMatches )
{
Bu::String::const_iterator t, g;
t = sTxt.begin();
g = sMatches.begin();
while( g && t )
{
switch( *g )
{
case '*':
// First, if the * is at the end, then we do match, it doesn't
// matter what is in sTxt
if( !(g+1) )
return true;
// Now attempt to scan for the remainder as a matched set
{
Bu::String::const_iterator tn = t+1, gn = g+1, gi=g+1;
bool bFoundMatch = false;
while( tn && gn )
{
if( *gn == '*' )
{
g = gn;
t = tn;
break;
}
if( *tn == *gn )
{
g = gn;
t = tn;
tn++;
gn++;
bFoundMatch = true;
}
else
{
gn = gi;
tn++;
bFoundMatch = false;
}
}
if( bFoundMatch == false )
return false;
if( !tn && !gn && bFoundMatch )
return true;
}
break;
case '?':
// Don't bother checking.
t++;
g++;
break;
default:
if( *t != *g )
return false;
t++;
g++;
break;
}
}
if( t || (g && *g != '*') )
return false;
return true;
}
bool FunctionMatches::matchlist( const Bu::String &sTxt, VarList &lParams )
{
for( VarList::iterator i = lParams.begin(); i; i++ )
{
if( (*i).getType() == Variable::typeList )
{
for( VarList::iterator j = (*i).begin(); j; j++ )
{
if( globcmp( sTxt, (*j).toString() ) )
return true;
}
}
else
{
if( globcmp( sTxt, (*i).toString() ) )
return true;
}
}
return false;
}
Variable FunctionMatches::call( Variable &input, VarList lParams )
{
switch( input.getType() )
{
case Variable::typeString:
{
Bu::String sTxt = input.getString();
return Variable( matchlist( sTxt, lParams ) );
}
break;
case Variable::typeList:
{
Variable vRet( Variable::typeList );
for( VarList::iterator i = input.begin(); i; i++ )
{
if( (*i).getType() != Variable::typeString )
continue;
Bu::String sTxt = (*i).getString();
if( matchlist( sTxt, lParams ) )
vRet.append( *i );
}
return vRet;
}
break;
default:
throw Bu::ExceptionBase("You can only use a string or list as the "
"input to matches.");
break;
}
return Variable();
}
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