We're almost to rule/command generation, then only a couple of steps before it

will do it all!

17 files changed, 611 insertions, 20 deletions

diff --git a/build.conf b/build.conf
new file mode 100644
index 0000000..b4792fb
--- /dev/null
+++ b/build.conf
@@ -0,0 +1,22 @@
+# This is a build file for build
+
+default action: check build
+
+create file build from files in src using rule exe
+
+set CXXFLAGS += "-Ilibbu++/src"
+set LDFLAGS += "-Llibbu++ -lbu++"
+
+/(.*)\.o/ requires from command "g++ {CXXFLAGS} -M {re:1}.c*"
+
+rule exe matches all /(.*)\.o/ perform command ...
+        "g++ {LDFLAGS} -o {target} {matches}"
+
+rule cpp matches one /(.*)\.c(pp)?/ produces {1}.o perform command ...
+        "g++ {CXXFLAGS} -o {target} {match}"
+
+rule bison matches one /(.*)\.y/ produces {1}.tab.c, {1}.tab.h perform ...
+        command "bison {match}"
+
+rule flex matches one /(.*)\.l/ produces {1}.yy.c perform ...
+        command "flex --bison-bridge --bison-locations -o {target} {match}"
diff --git a/src/action.cpp b/src/action.cpp
index c594792..8907816 100644
--- a/src/action.cpp
+++ b/src/action.cpp
@@ -1,5 +1,6 @@
 #include "action.h"
 #include "command.h"
+#include "builder.h"
 
 Action::Action() :
         bDefault( true ),
@@ -36,3 +37,12 @@ void Action::debug()
         }
 }
 
+void Action::execute( Builder &bld )
+{
+        for( std::list<Command *>::iterator i = lCommand.begin();
+                 i != lCommand.end(); i++ )
+        {
+                (*i)->execute( bld );
+        }
+}
+
diff --git a/src/action.h b/src/action.h
index 12c2cc4..7518ed2 100644
--- a/src/action.h
+++ b/src/action.h
@@ -5,6 +5,7 @@
 #include "staticstring.h"
 
 class Command;
+class Builder;
 
 class Action
 {
@@ -26,6 +27,8 @@ public:
 
         void debug();
 
+        void execute( class Builder &bld );
+
 private:
         bool bDefault;
         StaticString sName;
diff --git a/src/build.y b/src/build.y
index 8345b1f..ecc5d59 100644
--- a/src/build.y
+++ b/src/build.y
@@ -78,8 +78,15 @@ line: TOK_DEFAULT TOK_ACTION ':'
         | STRING TOK_REQUIRES 
           {
                   bld.setTmp( $1 );
+                  bld.requiresRegexp( false );
           }
-          reqlst
+          reqcompletion
+        | REGEXP TOK_REQUIRES
+          {
+                  bld.setTmp( $1 );
+                  bld.requiresRegexp( true );
+          }
+          reqcompletion
         | listcmds
         | TOK_FOR STRING
           {
@@ -92,6 +99,13 @@ line: TOK_DEFAULT TOK_ACTION ':'
         | rule
         ;
 
+reqcompletion: reqlst
+                         | TOK_FROM TOK_COMMAND STRING
+                           {
+                                   bld.requiresFromCommand( bld.getTmp(), $3 );
+                           }
+                         ;
+
 reqlst: STRING
             {
                         bld.requires( bld.getTmp(), $1 );
@@ -118,7 +132,20 @@ createfromdirlst: createfromdir
                                 | createfromdirlst ',' createfromdir
                                 ;
 
-createfromdir: STRING { printf("  srcdir: %s\n", $1 ); }
+createfromdir: STRING
+                           {
+                                   try
+                                   {
+                                           ((FileTarget *)bld.lastTarget())->addInputDir( $1 );
+                                   }
+                                   catch( BuildException &e )
+                                   {
+                                           std::string s( $1 );
+                                           s +=": ";
+                                           s += e.what();
+                                           yyerror( &yyloc, bld, s.c_str() );
+                                   }
+                           }
                          ;
 
 createusing: TOK_RULE STRING
@@ -159,12 +186,19 @@ rulesublst: rulesub
                   ;
 
 rulesub: TOK_MATCHES rulematches
-           | TOK_PRODUCES STRING
-             {
-                         bld.lastRule()->setProduces( $2 );
-                 }
+           | TOK_PRODUCES produceslst
            ;
 
+produceslst: STRING
+                   {
+                           bld.lastRule()->addProduces( $1 );
+                   }
+                   | produceslst ',' STRING
+                   {
+                           bld.lastRule()->addProduces( $3 );
+                   }
+                   ;
+
 rulematches: TOK_ALL REGEXP
                      {
                                  try
diff --git a/src/builder.cpp b/src/builder.cpp
index e5017e2..8e29c81 100644
--- a/src/builder.cpp
+++ b/src/builder.cpp
@@ -32,6 +32,28 @@ void Builder::load( const char *sFN )
         scanEnd();
 }
 
+void Builder::build( const char *sAct )
+{
+        Action *pAct;
+        if( sAct == NULL )
+                pAct = pDefaultAction;
+        else
+        {
+                if( mAction.find( sAct ) == mAction.end() )
+                        throw BuildException("No action matches '%s'.", sAct );
+                pAct = mAction[sAct];
+        }
+
+        printf("--- %s ---\n", pAct->getName() );
+
+        pAct->execute( *this );
+}
+
+void Builder::execute( Action *pAct )
+{
+        pAct->execute( *this );
+}
+
 void Builder::add( Action *pAct )
 {
         if( pAct->isDefault() )
@@ -185,8 +207,125 @@ void Builder::varAddSet( const char *sName, const char *sValue )
         }
 }
 
+void Builder::processRequires( std::list<std::string> &lInput )
+{
+        for( regreqlist::iterator i = lRequiresRegexp.begin();
+                 i != lRequiresRegexp.end(); i++ )
+        {
+                RegExp *re = (*i).first;
+                for( std::list<std::string>::iterator j = lInput.begin();
+                         j != lInput.end(); j++ )
+                {
+                        if( re->execute( (*j).c_str() ) )
+                        {
+                                varmap *revars = regexVars( re );
+                                requiresNormal(
+                                        (*j).c_str(),
+                                        varRepl(
+                                                (*i).second.c_str(),
+                                                "",
+                                                revars
+                                                ).c_str()
+                                        );
+                                delete revars;
+                        }
+                }
+        }
+
+        for( regreqlist::iterator i = lRequiresRegexpCommand.begin();
+                 i != lRequiresRegexpCommand.end(); i++ )
+        {
+                RegExp *re = (*i).first;
+                for( std::list<std::string>::iterator j = lInput.begin();
+                         j != lInput.end(); j++ )
+                {
+                        if( re->execute( (*j).c_str() ) )
+                        {
+                                varmap *revars = regexVars( re );
+                                FILE *fcmd = popen(
+                                        varRepl( (*i).second.c_str(), "", revars ).c_str(),
+                                        "r" );
+                                std::string rhs;
+                                bool bHeader = true;
+                                for(;;)
+                                {
+                                        if( feof( fcmd ) )
+                                                break;
+                                        int cc = fgetc( fcmd );
+                                        if( cc == EOF )
+                                                break;
+                                        unsigned char c = cc;
+                                        if( bHeader )
+                                        {
+                                                if( c == ':' )
+                                                        bHeader = false;
+                                        }
+                                        else
+                                        {
+                                                if( c == ' ' || c == '\t' )
+                                                {
+                                                        if( rhs != "" )
+                                                        {
+                                                                requiresNormal(
+                                                                        (*j).c_str(),
+                                                                        rhs.c_str()
+                                                                        );
+                                                                rhs = "";
+                                                        }
+                                                }
+                                                else
+                                                {
+                                                        if( c == '\\' )
+                                                                c = fgetc( fcmd );
+                                                        if( c != '\n' )
+                                                                rhs += c;
+                                                }
+                                        }
+                                }
+                                if( rhs != "" )
+                                {
+                                        requiresNormal(
+                                                (*j).c_str(),
+                                                rhs.c_str()
+                                                );
+                                        rhs = "";
+                                }
+                                fclose( fcmd );
+                                delete revars;
+                        }
+                }
+        }
+}
+
+std::map<std::string, std::string> *Builder::regexVars( RegExp *re )
+{
+        varmap *map = new varmap;
+
+        int jmax = re->getNumSubStrings();
+        for( int j = 0; j < jmax; j++ )
+        {
+                char buf[8];
+                sprintf( buf, "re:%d", j );
+                (*map)[buf] = re->getSubString( j );
+        }
+
+        return map;
+}
+
 void Builder::requires( const char *sBase, const char *sReq )
 {
+        if( bReqRegexp )
+        {
+                requiresRegexp( sBase, sReq );
+        }
+        else
+        {
+                requiresNormal( sBase, sReq );
+        }
+}
+
+void Builder::requiresNormal( const char *sBase, const char *sReq )
+{
         std::list<std::string> *pList = NULL;
         if( mRequires.find(sBase) == mRequires.end() )
         {
@@ -201,6 +340,26 @@ void Builder::requires( const char *sBase, const char *sReq )
         pList->push_back( sReq );
 }
 
+void Builder::requiresRegexp( const char *sBase, const char *sReq )
+{
+        lRequiresRegexp.push_back(
+                std::pair<RegExp *, std::string>(
+                        new RegExp( sBase ),
+                        sReq
+                        )
+                );
+}
+
+void Builder::requiresFromCommand( const char *sBase, const char *sCmd )
+{
+        lRequiresRegexpCommand.push_back(
+                std::pair<RegExp *, std::string>(
+                        new RegExp( sBase ),
+                        sCmd
+                        )
+                );
+}
+
 void Builder::setContext( const char *sCont )
 {
         sContext = sCont;
@@ -211,3 +370,79 @@ void Builder::setContext()
         setContext("");
 }
 
+bool Builder::hasVar( varmap *pMap, std::string &var )
+{
+        if( pMap == NULL ) 
+                return false;
+        if( pMap->find( var ) == pMap->end() )
+                return false;
+        return true;
+}
+
+std::string Builder::varRepl( const char *sSrc, const char *cont, varmap *mExtra )
+{
+        varmap *mCont = NULL;
+        if( cont[0] != '\0' )
+        {
+                if( mContVar.find( cont ) != mContVar.end() )
+                        mCont = &mContVar[cont];
+        }
+
+        std::string out;
+        std::string var;
+        bool bVar = false;
+
+        for( const char *s = sSrc; *s; s++ )
+        {
+                if( *s == '{' )
+                {
+                        bVar = true;
+                        continue;
+                }
+                else if( *s == '}' && bVar )
+                {
+                        if( hasVar( &mVar, var ) )
+                        {
+                                out += mVar[var];
+                        }
+                        else if( hasVar( mCont, var ) )
+                        {
+                                out += (*mCont)[var];
+                        }
+                        else if( hasVar( mExtra, var ) )
+                        {
+                                out += (*mExtra)[var];
+                        }
+                        var = "";
+                        bVar = false;
+                        continue;
+                }
+
+                if( bVar == true )
+                {
+                        var += *s;
+                }
+                else
+                {
+                        out += *s;
+                }
+        }
+
+        return out;
+}
+
+Rule *Builder::getRule( const char *sName )
+{
+        if( mRule.find( sName ) != mRule.end() )
+                return mRule[sName];
+
+        return NULL;
+}
+
+std::list<Rule *> Builder::findRuleChain( Rule *pRule )
+{
+        std::list<Rule *> ret;
+
+        return ret;
+}
+
diff --git a/src/builder.h b/src/builder.h
index 89810c0..d7c0891 100644
--- a/src/builder.h
+++ b/src/builder.h
@@ -7,6 +7,7 @@
 #include "build.tab.h"
 #include "exceptionbase.h"
 #include "staticstring.h"
+#include "regexp.h"
 
 subExceptionDecl( BuildException )
 
@@ -34,6 +35,8 @@ public:
         virtual ~Builder();
 
         void load( const char *sFN );
+        void build( const char *sAct=NULL );
+        void execute( Action *pAct );
 
         //void error( const yy::location &l, const std::string &m );
         //void error( const std::string &m );
@@ -46,7 +49,19 @@ public:
         void add( Target *pTarg );
         void varSet( const char *sName, const char *sValue );
         void varAddSet( const char *sName, const char *sValue );
+        Rule *getRule( const char *sName );
+        std::list<Rule *> findRuleChain( Rule *pRule );
+        void processRequires( std::list<std::string> &lInput );
         void requires( const char *sBase, const char *sReq );
+        void requiresFromCommand( const char *sBase, const char *sReq );
+        void requiresRegexp( bool on )
+        {
+                bReqRegexp = on;
+        }
+        bool isRequiresRegexp()
+        {
+                return bReqRegexp;
+        }
         void setContext( const char *sCont );
         void setContext();
 
@@ -77,10 +92,26 @@ public:
                 return sTmp;
         }
 
+        Target *getTarget( const char *sName )
+        {
+                if( mTarget.find( sName ) == mTarget.end() )
+                        throw BuildException("Target %s not found.", sName );
+
+                return mTarget[sName];
+        }
+
 private:
+        typedef std::map<std::string, std::string> varmap;
+
+        void requiresNormal( const char *sBase, const char *sReq );
+        void requiresRegexp( const char *sBase, const char *sReq );
         void checkVar( const char *cont, const char *sName );
         void scanBegin();
         void scanEnd();
+        varmap *regexVars( RegExp *re );
+
+        bool hasVar( varmap *pMap, std::string &var );
+        std::string varRepl( const char *sSrc, const char *cont, varmap *mExtra );
 
         Action *pDefaultAction;
         Action *pLastAddedAction;
@@ -92,14 +123,20 @@ private:
         Target *pLastAddedTarget;
         std::map<const char *, Target *, ltstr> mTarget;
 
-        typedef std::map<std::string, std::string> varmap;
         varmap mVar;
+
         std::map<std::string, std::list<std::string> *> mRequires;
 
+        typedef std::list<std::pair<RegExp *, std::string> > regreqlist;
+        regreqlist lRequiresRegexp;
+        regreqlist lRequiresRegexpCommand;
+
         std::map<std::string, varmap> mContVar;
         StaticString sContext;
 
         StaticString sTmp;
+
+        bool bReqRegexp;
 };
 
 #endif
diff --git a/src/command.cpp b/src/command.cpp
index 72f9a4c..ea5ade3 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -1,4 +1,6 @@
 #include "command.h"
+#include "builder.h"
+#include "target.h"
 
 Command::Command( CmdType cmd, const char *sTarget ) :
         nType( cmd ),
@@ -16,3 +18,17 @@ void Command::debug()
         printf("      command: %s %s\n", cmdt[ nType ], sTarget.getString() );
 }
 
+void Command::execute( Builder &bld )
+{
+        switch( nType )
+        {
+                case cmdCheck:
+                        bld.getTarget( sTarget )->check( bld );
+                        break;
+
+                case cmdClean:
+                        bld.getTarget( sTarget )->clean( bld );
+                        break;
+        }
+}
+
diff --git a/src/command.h b/src/command.h
index aa00eae..495c749 100644
--- a/src/command.h
+++ b/src/command.h
@@ -4,6 +4,8 @@
 #include <stdint.h>
 #include "staticstring.h"
 
+class Builder;
+
 class Command
 {
 public:
@@ -29,6 +31,8 @@ public:
 
         void debug();
 
+        void execute( class Builder &bld );
+
 private:
         CmdType nType;
         StaticString sTarget;
diff --git a/src/filetarget.cpp b/src/filetarget.cpp
index b9d7946..65f9d70 100644
--- a/src/filetarget.cpp
+++ b/src/filetarget.cpp
@@ -1,4 +1,9 @@
+#include <errno.h>
+#include <dirent.h>
+
+#include "rule.h"
 #include "filetarget.h"
+#include "builder.h" // for BuildException
 
 FileTarget::FileTarget( const char *sName ) :
         Target( sName )
@@ -15,3 +20,63 @@ void FileTarget::debug()
         printf("      type: FileTarget\n");
 }
 
+char *gnu_getcwd()
+{
+        size_t size = 1024;
+     
+        while (1)
+        {
+                char *buffer = new char[size];
+                if (getcwd (buffer, size) == buffer)
+                        return buffer;
+                delete[] buffer;
+                if (errno != ERANGE)
+                        return 0;
+                size *= 2;
+        }
+}
+
+void FileTarget::addInputDir( const char *sDir )
+{
+        DIR *dir = opendir( sDir );
+        if( dir == NULL )
+        {
+                throw BuildException( strerror( errno ) );
+        }
+
+        char *cwd = gnu_getcwd();
+        std::string base( cwd );
+        base += "/";
+        base += sDir;
+        delete[] cwd;
+
+        struct dirent *de;
+
+        while( (de = readdir( dir )) )
+        {
+                if( de->d_name[0] == '.' || de->d_name[0] == '\0' )
+                        continue;
+
+                std::string s( base );
+                s += "/";
+                s += de->d_name;
+                addInput( s.c_str() );
+        }
+
+        closedir( dir );
+}
+
+void FileTarget::check( Builder &bld )
+{
+        Rule *pRule = bld.getRule( sRule );
+
+        std::list<std::string> tmp = pRule->execute( bld, lInput );
+        lOutput.insert( lOutput.end(), tmp.begin(), tmp.end() );
+
+        bld.processRequires( lInput );
+}
+
+void FileTarget::clean( Builder &bld )
+{
+}
+
diff --git a/src/filetarget.h b/src/filetarget.h
index cf4b3d6..11dc180 100644
--- a/src/filetarget.h
+++ b/src/filetarget.h
@@ -11,6 +11,11 @@ public:
         virtual ~FileTarget();
 
         virtual void debug();
+
+        void addInputDir( const char *sDir );
+
+        virtual void check( class Builder &bld );
+        virtual void clean( class Builder &bld );
         
 private:
 
diff --git a/src/main.cpp b/src/main.cpp
index 995009d..2e13b16 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,10 +4,11 @@ int main()
 {
         Builder bld;
 
-        bld.load("congo");
+        bld.load("build.conf");
 
-        printf("\n\n----------\nDebug dump\n----------\n");
+        bld.build();
 
+        printf("\n\n----------\nDebug dump\n----------\n");
         bld.debug();
 }
 
diff --git a/src/regexp.cpp b/src/regexp.cpp
new file mode 100644
index 0000000..ff2d09a
--- /dev/null
+++ b/src/regexp.cpp
@@ -0,0 +1,71 @@
+#include "regexp.h"
+#include "builder.h" // For BuildException
+#include "staticstring.h"
+
+RegExp::RegExp() :
+        bCompiled( false ),
+        aSubStr( NULL )
+{
+}
+
+RegExp::RegExp( const char *sSrc ) :
+        bCompiled( false ),
+        aSubStr( NULL )
+{
+        compile( sSrc );
+}
+
+RegExp::~RegExp()
+{
+        regfree( &re );
+        delete[] aSubStr;
+}
+
+void RegExp::compile( const char *sSrc )
+{
+        if( bCompiled )
+                throw BuildException("Already compiled.");
+
+        int nErr = regcomp( &re, sSrc, REG_EXTENDED|REG_NEWLINE );
+        if( nErr )
+        {
+                size_t length = regerror( nErr, &re, NULL, 0 );
+                char *buffer = new char[length];
+                (void) regerror( nErr, &re, buffer, length );
+                StaticString s( buffer );
+                delete[] buffer;
+                throw BuildException( s.getString() );
+        }
+        bCompiled = true;
+        this->sSrc = sSrc;
+
+        nSubStr = re.re_nsub+1;
+        aSubStr = new regmatch_t[nSubStr];
+}
+
+int RegExp::getNumSubStrings()
+{
+        return nSubStr;
+}
+
+bool RegExp::execute( const char *sSrc )
+{
+        sTest = sSrc;
+        if( regexec( &re, sSrc, nSubStr, aSubStr, 0 ) )
+                return false;
+        return true;
+}
+
+std::pair<int,int> RegExp::getSubStringRange( int nIndex )
+{
+        return std::pair<int,int>( aSubStr[nIndex].rm_so, aSubStr[nIndex].rm_eo );
+}
+
+std::string RegExp::getSubString( int nIndex )
+{
+        return std::string(
+                sTest.getString()+aSubStr[nIndex].rm_so,
+                aSubStr[nIndex].rm_eo - aSubStr[nIndex].rm_so
+                );
+}
+
diff --git a/src/regexp.h b/src/regexp.h
new file mode 100644
index 0000000..96f3747
--- /dev/null
+++ b/src/regexp.h
@@ -0,0 +1,36 @@
+#ifndef REG_EXP_H
+#define REG_EXP_H
+
+#include <string>
+#include <stdint.h>
+#include <regex.h>
+#include <utility>
+#include "staticstring.h"
+
+class RegExp
+{
+public:
+        RegExp();
+        RegExp( const char *sSrc );
+        virtual ~RegExp();
+
+        void compile( const char *sSrc );
+        int getNumSubStrings();
+        bool execute( const char *sSrc );
+        std::pair<int,int> getSubStringRange( int nIndex );
+        std::string getSubString( int nIndex );
+        const char *getSource()
+        {
+                return sSrc;
+        }
+
+private:
+        StaticString sSrc;
+        StaticString sTest;
+        regex_t re;
+        bool bCompiled;
+        int nSubStr;
+        regmatch_t *aSubStr;
+};
+
+#endif
diff --git a/src/rule.cpp b/src/rule.cpp
index a7ebf9b..a240855 100644
--- a/src/rule.cpp
+++ b/src/rule.cpp
@@ -2,8 +2,7 @@
 #include "builder.h" // for BuildException
 
 Rule::Rule( const char *sName ) :
-        sName( sName ),
-        sProduces("{target}")
+        sName( sName )
 {
 }
 
@@ -14,11 +13,23 @@ Rule::~Rule()
 
 void Rule::debug()
 {
-        printf("   Rule %s produces %s:\n",
-                sName.getString(),
-                sProduces.getString()
+        printf("   Rule %s:\n",
+                sName.getString()
                 );
-        printf("      Matches ");
+        printf("      Produces: ");
+        if( lProduces.empty() )
+                printf("{target}");
+        else
+        {
+                for( std::list<std::string>::iterator i = lProduces.begin();
+                         i != lProduces.end(); i++ )
+                {
+                        if( i != lProduces.begin() )
+                                printf(", ");
+                        printf("%s", (*i).c_str() );
+                }
+        }
+        printf("\n      Matches ");
         if( mHow == matchOne )
                 printf("one ");
         else if( mHow == matchAll )
@@ -31,9 +42,9 @@ void Rule::debug()
         printf("\"%s\"\n", sPerfCmd.getString() );
 }
 
-void Rule::setProduces( const char *sP )
+void Rule::addProduces( const char *sP )
 {
-        sProduces = sP;
+        lProduces.push_back( sP );
 }
 
 void Rule::setMatches( Matches how, const char *sW )
@@ -59,3 +70,13 @@ void Rule::setPerforms( Perform pwhat, const char *sperfcmd )
         sPerfCmd = sperfcmd;
 }
 
+std::list<std::string> Rule::execute( Builder &bld, std::list<std::string> lInput )
+{
+        std::list<Rule *> lRule = bld.findRuleChain( this );
+
+        std::list<std::string> ret;
+
+        return ret;
+
+}
+
diff --git a/src/rule.h b/src/rule.h
index 64cdc9d..8371649 100644
--- a/src/rule.h
+++ b/src/rule.h
@@ -1,6 +1,8 @@
 #ifndef RULE_H
 #define RULE_H
 
+#include <list>
+#include <string>
 #include <stdint.h>
 #include <regex.h>
 #include "staticstring.h"
@@ -30,13 +32,15 @@ public:
 
         void debug();
 
-        void setProduces( const char *sProduces );
+        void addProduces( const char *sProduces );
         void setMatches( Matches how, const char *sWhat );
         void setPerforms( Perform pwhat, const char *sPerfCmd );
 
+        std::list<std::string> execute( class Builder &bld, std::list<std::string> lInput );
+
 private:
         StaticString sName;
-        StaticString sProduces;
+        std::list<std::string> lProduces;
 
         Matches mHow;
         StaticString sWhat;
diff --git a/src/target.cpp b/src/target.cpp
index b0967bf..00d16b4 100644
--- a/src/target.cpp
+++ b/src/target.cpp
@@ -20,5 +20,21 @@ void Target::debug()
                 sName.getString(),
                 sRule.getString()
                 );
+        printf("      Input list:\n");
+        for( std::list<std::string>::iterator i = lInput.begin();
+                 i != lInput.end(); i++ )
+        {
+                printf("         %s\n", (*i).c_str() );
+        }
+}
+
+void Target::addInput( const char *sInput )
+{
+        lInput.push_back( sInput );
+}
+
+void Target::addOutput( const char *sOutput )
+{
+        lOutput.push_back( sOutput );
 }
 
diff --git a/src/target.h b/src/target.h
index 667c467..59c5d7e 100644
--- a/src/target.h
+++ b/src/target.h
@@ -1,6 +1,8 @@
 #ifndef TARGET_H
 #define TARGET_H
 
+#include <list>
+#include <string>
 #include <stdint.h>
 #include "staticstring.h"
 
@@ -19,10 +21,19 @@ public:
 
         virtual void debug();
 
-private:
+        void addInput( const char *sInput );
+        void addOutput( const char *sOutput );
+
+        virtual void check( class Builder &bld ) = 0;
+        virtual void clean( class Builder &bld ) = 0;
+
+protected:
         StaticString sName;
         StaticString sRule;
 
+        std::list<std::string> lInput;
+        std::list<std::string> lOutput;
+
 };
 
 #endif