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cclassad.cpp

/***************************************************************
 *
 * Copyright (C) 1990-2007, Condor Team, Computer Sciences Department,
 * University of Wisconsin-Madison, WI.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ***************************************************************/


#include "classad/common.h"
#include "classad/cclassad.h"
#include "classad/classad.h"
#include "classad/source.h"
#include "classad/sink.h"
#include "classad/xmlSink.h"

using namespace std;

BEGIN_NAMESPACE( classad )

struct cclassad {
      ClassAd *ad;
};

struct cclassad * cclassad_create( const char *str )
{
      ClassAdParser parser;
      struct cclassad *c;

      c = (struct cclassad *) malloc(sizeof(*c));
      if(!c) return 0;

      if(str) {
            c->ad = parser.ParseClassAd(str);
      } else {
            c->ad = new ClassAd;
      }

      if(!c->ad) {
            free(c);
            return 0;
      }

      return c;
}

void cclassad_delete( struct cclassad *c )
{
      if(c) {
            if(c->ad) delete c->ad;
            free(c);
      }
}

char * cclassad_unparse( struct cclassad *c )
{
      ClassAdUnParser unparser;
      string s;

      unparser.Unparse(s,c->ad);

      return strdup(s.c_str());
}

char * cclassad_unparse_xml( struct cclassad *c )
{
      ClassAdXMLUnParser unparser;
      string s;

      unparser.Unparse(s,c->ad);

      return strdup(s.c_str());
}

int cclassad_match( struct cclassad *a, struct cclassad *b )
{
      char *expr;
      int result;
      
      if(!cclassad_evaluate_to_expr(a,"requirements",&expr)) {
            return 0;
      }

      if(!cclassad_evaluate_to_bool(b,expr,&result)) {
            free(expr);
            if(!result) return 0;
      }

      if(!cclassad_evaluate_to_expr(b,"requirements",&expr)) {
            return 0;
      }

      if(!cclassad_evaluate_to_bool(a,expr,&result)) {
            free(expr);
            if(!result) return 0;
      }

      return 1;
}

int cclassad_insert_expr( struct cclassad *c, const char *attr, const char *value )
{
      ClassAdParser parser;
      string strattr(attr);
      string strexpr(value);
      ExprTree *e=0;

      e = parser.ParseExpression(strexpr);
      if(e) {
            if(c->ad->Insert(strattr,e)) {
                  return 1;
            } else {
                  delete e;
                  return 0;
            }
      } else {
            return 0;
      }
}

int cclassad_insert_string( struct cclassad *c, const char *attr, const char *value )
{
      string strattr(attr);
      string strvalue(value);
      return c->ad->InsertAttr(strattr,strvalue);
}

int cclassad_insert_int( struct cclassad *c, const char *attr, int value )
{
      string strattr(attr);
      return c->ad->InsertAttr(strattr,value);
}

int cclassad_insert_double( struct cclassad *c, const char *attr, double value )
{
      string strattr(attr);
      return c->ad->InsertAttr(strattr,value);
}

int cclassad_insert_bool( struct cclassad *c, const char *attr, int value )
{
      string strattr(attr);
      return c->ad->InsertAttr(strattr,value);
}


int cclassad_remove( struct cclassad *c, const char *attr )
{
      string strattr(attr);
      return c->ad->Delete(strattr);
}

int cclassad_evaluate_to_expr( struct cclassad *c, const char *expr, char **result )
{
      string exprstring(expr);
      Value value;

      if(c->ad->EvaluateExpr(exprstring,value)) {
            ClassAdUnParser unparser;
            string s;
            unparser.Unparse(s,value);
            *result = strdup(s.c_str());
            return *result!=0;
      }

      return 0;
}

int cclassad_evaluate_to_string( struct cclassad *c, const char *expr, char **result )
{
      string exprstring(expr);
      Value value;

      if(c->ad->EvaluateExpr(exprstring,value)) {
            string s;
            if(value.IsStringValue(s)) {
                  *result = strdup(s.c_str());
                  return *result!=0;
            }
      }
      return 0;
}

int cclassad_evaluate_to_int( struct cclassad *c, const char *expr, int *result )
{
      string exprstring(expr);
      Value value;

      if(c->ad->EvaluateExpr(exprstring,value)) {
            if(value.IsIntegerValue(*result)) {
                  return 1;
            }
      }
      return 0;
}

int cclassad_evaluate_to_double( struct cclassad *c, const char *expr, double *result )
{
      string exprstring(expr);
      Value value;

      if(c->ad->EvaluateExpr(exprstring,value)) {
            if(value.IsRealValue(*result)) {
                  return 1;
            }
      }
      return 0;
}

int cclassad_evaluate_to_bool( struct cclassad *c, const char *expr, int *result )
{
      string exprstring(expr);
      Value value;

      if(c->ad->EvaluateExpr(exprstring,value)) {
            bool b;
            if(value.IsBooleanValue(b)) {
                  *result = b;
                  return 1;
            }
      }
      return 0;
}

END_NAMESPACE

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