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/*
* Copyright (C) 2007-2011 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "bu/minimacro.h"
Bu::MiniMacro::MiniMacro()
{
hFuncs.insert("toupper", new FuncToUpper() );
hFuncs.insert("tolower", new FuncToLower() );
}
Bu::MiniMacro::MiniMacro( const StrHash &sVarSrc )
{
for( StrHash::const_iterator i = sVarSrc.begin(); i != sVarSrc.end(); i++ )
{
addVar( i.getKey(), i.getValue() );
}
}
Bu::MiniMacro::~MiniMacro()
{
}
Bu::String Bu::MiniMacro::parse( const Bu::String &sIn )
{
bContinue = true;
Bu::String sOut;
for( sCur = sIn.getStr(); *sCur && bContinue; sCur++ )
{
if( *sCur == '{' )
{
switch( sCur[1] )
{
case '=':
sCur += 2;
sOut += parseRepl();
break;
case '?':
sCur += 2;
sOut += parseCond();
break;
case ':':
sCur += 2;
sOut += parseCmd();
break;
default:
sOut += *sCur;
continue;
}
}
else
{
sOut += *sCur;
}
}
iLastPos = (ptrdiff_t)sCur - (ptrdiff_t)sIn.getStr();
return sOut;
}
Bu::String Bu::MiniMacro::parseRepl()
{
Bu::String sOut;
bool bIsFirst = true;
for( const char *sNext = sCur;;)
{
for(; *sNext != ':' && *sNext != '}' && *sNext != '\0'; sNext++ ) { }
if( *sNext == '\0' )
break;
Bu::String sName( sCur, (ptrdiff_t)sNext-(ptrdiff_t)sCur );
if( bIsFirst )
{
sOut = hVars[sName];
bIsFirst = false;
//printf("Variable: \"%s\"\n", sName.getStr() );
}
else
{
sOut = callFunc( sOut, sName );
//printf("Filter: \"%s\"\n", sName.getStr() );
}
if( *sNext == '}' )
{
sCur = sNext;
break;
}
else if( *sNext == ':' )
{
}
sNext++;
sCur = sNext;
}
return sOut;
}
Bu::String Bu::MiniMacro::parseCond()
{
Bu::String sOut;
//printf("%20s\n", sCur );
return sOut;
}
Bu::String Bu::MiniMacro::parseCmd()
{
Bu::String sOut;
const char *sNext = sCur;
for(; *sNext != ':' && *sNext != '}' && *sNext != '\0'; sNext++ ) { }
if( *sNext != '\0' )
{
Bu::String sName( sCur, (ptrdiff_t)sNext-(ptrdiff_t)sCur );
if( sName == "end" )
{
sCur = sNext;
bContinue = false;
return sOut;
}
else
{
throw Bu::ExceptionBase("Unknown command '%s'.",
sName.getStr()
);
}
}
else
{
//printf("Uh...?\n");
}
//printf("%20s\n", sCur );
return sOut;
}
Bu::String Bu::MiniMacro::callFunc(
const Bu::String &sIn, const Bu::String &sFunc )
{
int i = sFunc.findIdx('(');
if( i < 0 )
throw Bu::ExceptionBase("That doesn't look like a function call");
Bu::String sName( sFunc.getStr(), i );
StrList lsParams;
for( const char *s = sFunc.getStr()+i+1; *s && *s != ')'; s++ )
{
for(; *s == ' ' || *s == '\t' || *s == '\r' || *s == '\n'; s++ ) { }
const char *sNext;
for( sNext = s; *sNext && *sNext != ')' && *sNext != ','; sNext++ ) { }
Bu::String p( s, (ptrdiff_t)sNext-(ptrdiff_t)s );
lsParams.append( p );
sNext++;
s = sNext;
}
return hFuncs.get( sName )->call( sIn, lsParams );
}
void Bu::MiniMacro::addVar(
const Bu::String &sName, const Bu::String &sValue )
{
hVars.insert( sName, sValue );
}
bool Bu::MiniMacro::hasVar( const Bu::String &sName )
{
return hVars.has( sName );
}
const Bu::String &Bu::MiniMacro::getVar( const Bu::String &sName )
{
return hVars.get( sName );
}
const Bu::StrHash &Bu::MiniMacro::getVars()
{
return hVars;
}
int Bu::MiniMacro::getPosition()
{
return iLastPos;
}
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