reader_rlp.c

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*         SCIP --- Solving Constraint Integer Programs                      */
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/*  Copyright (c) 2002-2025 Zuse Institute Berlin (ZIB)                      */
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/**@file   reader_rlp.c
 * @ingroup DEFPLUGINS_READER
 * @brief  RLP file reader (LP format with generic variables and row names)
 * @author Stefan Heinz
 */
 
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
 
#include "scip/pub_message.h"
#include "scip/pub_reader.h"
#include "scip/reader_lp.h"
#include "scip/reader_rlp.h"
#include "scip/scip_message.h"
#include "scip/scip_reader.h"
#include "scip/scip_prob.h"
#include <string.h>
 
#define READER_NAME             "rlpreader"
#define READER_DESC             "file reader for MIPs in IBM CPLEX's RLP file format"
#define READER_EXTENSION        "rlp"
 
 
/*
 * Callback methods of reader
 */
 
/** copy method for reader plugins (called when SCIP copies plugins) */
static
SCIP_DECL_READERCOPY(readerCopyRlp)
{  /*lint --e{715}*/
   assert(scip != NULL);
   assert(reader != NULL);
   assert(strcmp(SCIPreaderGetName(reader), READER_NAME) == 0);
 
   /* call inclusion method of reader */
   SCIP_CALL( SCIPincludeReaderRlp(scip) );
 
   return SCIP_OKAY;
}
 
 
/** problem reading method of reader */
static
SCIP_DECL_READERREAD(readerReadRlp)
{  /*lint --e{715}*/
 
   SCIP_CALL( SCIPreadLp(scip, reader, filename, result) );
 
   return SCIP_OKAY;
}
 
 
/** problem writing method of reader */
static
SCIP_DECL_READERWRITE(readerWriteRlp)
{  /*lint --e{715}*/
   if( genericnames )
   {
      SCIP_CALL( SCIPwriteLp(scip, file, name, transformed, objsense, objoffset, objscale, objoffsetexact, objscaleexact,
            vars, nvars, nbinvars, nintvars, nimplvars, ncontvars, conss, nconss, result) );
   }
   else
   {
      SCIPwarningMessage(scip, "RLP format is LP format with generic variable and constraint names\n");
 
      if( transformed )
      {
         SCIPwarningMessage(scip, "write transformed problem with generic variable and constraint names\n");
         SCIP_CALL( SCIPprintTransProblem(scip, file, "rlp", TRUE) );
      }
      else
      {
         SCIPwarningMessage(scip, "write original problem with generic variable and constraint names\n");
         SCIP_CALL( SCIPprintOrigProblem(scip, file, "rlp", TRUE) );
      }
      *result = SCIP_SUCCESS;
   }
   return SCIP_OKAY;
}
 
 
/*
 * reader specific interface methods
 */
 
/** includes the rlp file reader in SCIP */
SCIP_RETCODE SCIPincludeReaderRlp(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   SCIP_READER* reader;
 
   /* include reader */
   SCIP_CALL( SCIPincludeReaderBasic(scip, &reader, READER_NAME, READER_DESC, READER_EXTENSION, NULL) );
 
   assert(reader != NULL);
 
   /* set non fundamental callbacks via setter functions */
   SCIP_CALL( SCIPsetReaderCopy(scip, reader, readerCopyRlp) );
   SCIP_CALL( SCIPsetReaderRead(scip, reader, readerReadRlp) );
   SCIP_CALL( SCIPsetReaderWrite(scip, reader, readerWriteRlp) );
 
   return SCIP_OKAY;
}