C++ OGR_SRSNode::GetValue方法代码示例

/**
 * \brief Validate the current VERT_DATUM's arguments.
 *
 * @return OGRERR_NONE if the VERT_DATUM's arguments validate, an error code
 *         otherwise
 */
OGRErr OGRSpatialReference::ValidateVertDatum(OGR_SRSNode *poRoot)
{
    if ( !EQUAL(poRoot->GetValue(), "VERT_DATUM") )
        return OGRERR_NONE;

    if (poRoot->GetChildCount() < 2 )
    {
        CPLDebug( "OGRSpatialReference::Validate",
                  "Invalid number of children : %d", poRoot->GetChildCount() );
        return OGRERR_CORRUPT_DATA;
    }

    if (atoi(poRoot->GetChild(1)->GetValue()) == 0)
    {
        CPLDebug( "OGRSpatialReference::Validate",
                  "Invalid value for datum type (%s) : must be a number\n",
                  poRoot->GetChild(1)->GetValue());
        return OGRERR_CORRUPT_DATA;
    }

    OGR_SRSNode     *poNode;
    int             i;

    for( i = 2; i < poRoot->GetChildCount(); i++ )
    {
        poNode = poRoot->GetChild(i);

        if( EQUAL(poNode->GetValue(),"AUTHORITY") )
        {
            OGRErr eErr = ValidateAuthority(poNode);
            if (eErr != OGRERR_NONE)
                return eErr;
        }
        else if( EQUAL(poNode->GetValue(),"EXTENSION") )
        {
            // We do not try to control the sub-organization of
            // EXTENSION nodes.
        }
        else
        {
            CPLDebug( "OGRSpatialReference::Validate",
                      "Unexpected child for VERT_DATUM `%s'.\n",
                      poNode->GetValue() );

            return OGRERR_CORRUPT_DATA;
        }
    }

    return OGRERR_NONE;
}

OGRErr OGRSpatialReference::Validate(OGR_SRSNode *poRoot)
{
    if( !EQUAL(poRoot->GetValue(),"GEOGCS")
        && !EQUAL(poRoot->GetValue(),"PROJCS")
        && !EQUAL(poRoot->GetValue(),"LOCAL_CS")
        && !EQUAL(poRoot->GetValue(),"GEOCCS")
        && !EQUAL(poRoot->GetValue(),"VERT_CS")
        && !EQUAL(poRoot->GetValue(),"COMPD_CS"))
    {
        CPLDebug( "OGRSpatialReference::Validate",
                  "Unrecognised root node `%s'\n",
                  poRoot->GetValue() );
        return OGRERR_CORRUPT_DATA;
    }

/* -------------------------------------------------------------------- */
/*      For a COMPD_CS, validate subparameters and head & tail cs       */
/* -------------------------------------------------------------------- */
    if( EQUAL(poRoot->GetValue(),"COMPD_CS") )
    {
        OGR_SRSNode     *poNode;
        int             i;

        for( i = 1; i < poRoot->GetChildCount(); i++ )
        {
            poNode = poRoot->GetChild(i);

            if( EQUAL(poNode->GetValue(),"GEOGCS") ||
                EQUAL(poNode->GetValue(),"PROJCS") ||
                EQUAL(poNode->GetValue(),"LOCAL_CS") ||
                EQUAL(poNode->GetValue(),"GEOCCS") ||
                EQUAL(poNode->GetValue(),"VERT_CS") ||
                EQUAL(poNode->GetValue(),"COMPD_CS") )
            {
                OGRErr eErr = Validate(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
            }
            else if( EQUAL(poNode->GetValue(),"AUTHORITY") )
            {
                OGRErr eErr = ValidateAuthority(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
            }
            else
            {
                CPLDebug( "OGRSpatialReference::Validate",
                          "Unexpected child for COMPD_CS `%s'.\n",
                          poNode->GetValue() );

                return OGRERR_CORRUPT_DATA;
            }
        }

        return OGRERR_NONE;
    }

/* -------------------------------------------------------------------- */
/*      Validate VERT_CS                                                */
/* -------------------------------------------------------------------- */
    if( EQUAL(poRoot->GetValue(),"VERT_CS") )
    {
        OGR_SRSNode     *poNode;
        int             i;
        int             bGotVertDatum = FALSE;
        int             bGotUnit = FALSE;
        int             nCountAxis = 0;

        for( i = 1; i < poRoot->GetChildCount(); i++ )
        {
            poNode = poRoot->GetChild(i);

            if( EQUAL(poNode->GetValue(),"VERT_DATUM") )
            {
                OGRErr eErr = ValidateVertDatum(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
                bGotVertDatum = TRUE;
            }
            else if( EQUAL(poNode->GetValue(),"UNIT") )
            {
                OGRErr eErr = ValidateUnit(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
                bGotUnit = TRUE;
            }
            else if( EQUAL(poNode->GetValue(),"AXIS") )
            {
                OGRErr eErr = ValidateAxis(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
                nCountAxis ++;
            }
            else if( EQUAL(poNode->GetValue(),"AUTHORITY") )
            {
                OGRErr eErr = ValidateAuthority(poNode);
                if (eErr != OGRERR_NONE)
                    return eErr;
            }
            else
//.........这里部分代码省略.........

/**
 * \brief Validate the current PROJECTION's arguments.
 *
 * @return OGRERR_NONE if the PROJECTION's arguments validate, an error code
 *         otherwise
 */
OGRErr OGRSpatialReference::ValidateProjection(OGR_SRSNode *poRoot)
{
    OGR_SRSNode *poPROJCS = poRoot->GetNode( "PROJCS" );

    if( poPROJCS == NULL  )
        return OGRERR_NONE;

    if( poPROJCS->GetNode( "PROJECTION" ) == NULL )
    {
        CPLDebug( "OGRSpatialReference::Validate", 
                  "PROJCS does not have PROJECTION subnode." );
        return OGRERR_CORRUPT_DATA;
    }

/* -------------------------------------------------------------------- */
/*      Find the matching group in the proj and parms table.            */
/* -------------------------------------------------------------------- */
    const char *pszProjection;
    int        iOffset;
    
    pszProjection = poPROJCS->GetNode("PROJECTION")->GetChild(0)->GetValue();

    for( iOffset = 0; 
         papszProjWithParms[iOffset] != NULL
             && !EQUAL(papszProjWithParms[iOffset],pszProjection); )
    {
        while( papszProjWithParms[iOffset] != NULL )
            iOffset++;
        iOffset++;
    }

    if( papszProjWithParms[iOffset] == NULL )
        return OGRERR_UNSUPPORTED_SRS;

    iOffset++;

/* -------------------------------------------------------------------- */
/*      Check all parameters, and verify they are in the permitted      */
/*      list.                                                           */
/* -------------------------------------------------------------------- */
    int iNode;

    for( iNode = 0; iNode < poPROJCS->GetChildCount(); iNode++ )
    {
        OGR_SRSNode *poParm = poPROJCS->GetChild(iNode);
        int          i;
        const char  *pszParmName;

        if( !EQUAL(poParm->GetValue(),"PARAMETER") )
            continue;

        pszParmName = poParm->GetChild(0)->GetValue();

        for( i = iOffset; papszProjWithParms[i] != NULL; i++ )
        {
            if( EQUAL(papszProjWithParms[i],pszParmName) )
                break;
        }

        /* This parameter is not an exact match, is it an alias? */
        if( papszProjWithParms[i] == NULL )
        {
            for( i = iOffset; papszProjWithParms[i] != NULL; i++ )
            {
                if( IsAliasFor(papszProjWithParms[i],pszParmName) )
                    break;
            }

            if( papszProjWithParms[i] == NULL )
            {
                CPLDebug( "OGRSpatialReference::Validate", 
                          "PARAMETER %s for PROJECTION %s is not permitted.",
                          pszParmName, pszProjection );
                return OGRERR_CORRUPT_DATA;
            }
            else
            {
                CPLDebug( "OGRSpatialReference::Validate", 
                          "PARAMETER %s for PROJECTION %s is an alias for %s.",
                          pszParmName, pszProjection,
                          papszProjWithParms[i] );
                return OGRERR_CORRUPT_DATA;
            }
        }
    }

    return OGRERR_NONE;
}

bool rspfOgcWktTranslator::toOssimKwl( const rspfString& wktString,
                                        rspfKeywordlist &kwl,
                                        const char *prefix)const
{
   static const char MODULE[] = "rspfOgcWktTranslator::toOssimKwl";
   if(traceDebug())
   {
      rspfNotify(rspfNotifyLevel_DEBUG) << MODULE << " entered...\n";
   }
   
   const char* wkt = wktString.c_str();
   
   OGRSpatialReferenceH  hSRS = NULL;
   rspfDpt falseEastingNorthing;
   
   hSRS = OSRNewSpatialReference(NULL);
   if( OSRImportFromWkt( hSRS, (char **) &wkt ) != OGRERR_NONE )
   {
      OSRDestroySpatialReference( hSRS );
      return false;
   }
   
   rspfString rspfProj = "";
   const char* epsg_code = OSRGetAttrValue( hSRS, "AUTHORITY", 1 );
   if(traceDebug())
   {
      rspfNotify(rspfNotifyLevel_DEBUG)
         << "epsg_code: " << (epsg_code?epsg_code:"null") << "\n";
   }
   
   const char* units = NULL;
   OGR_SRSNode* node = ((OGRSpatialReference *)hSRS)->GetRoot();
   int nbChild  = node->GetChildCount();
   for (int i = 0; i < nbChild; i++)
   {
      OGR_SRSNode* curChild = node->GetChild(i);
      if (strcmp(curChild->GetValue(), "UNIT") == 0)
      {
         units = curChild->GetChild(0)->GetValue();
      }
   }
   if(traceDebug())
   {
      rspfNotify(rspfNotifyLevel_DEBUG)
         << "units: " << (units?units:"null") << "\n";
   }
   
   rspfString rspf_units;
   bool bGeog = OSRIsGeographic(hSRS);
   if ( bGeog == false )
   {
      rspf_units = "meters";
      if ( units != NULL )
      {
         rspfString s = units;
         s.downcase();
         
         if( ( s == rspfString("us survey foot") ) ||
             ( s == rspfString("u.s. foot") ) ||
             ( s == rspfString("foot_us") ) )
         {
            rspf_units = "us_survey_feet";
         }
         else if( s == rspfString("degree") )
         {
            rspf_units = "degrees";
         }
         else if( ( s == rspfString("meter") ) ||
                  ( s == rspfString("metre") ) )
         {
            rspf_units = "meters";
         }
      }
   }
   else
   {
      rspf_units = "degrees";
   }
   if(traceDebug())
   {
      rspfNotify(rspfNotifyLevel_DEBUG)
         << "rspf_units: " << rspf_units << "\n";
   }
   if (epsg_code)
   {
      rspfString epsg_spec ("EPSG:"); 
      epsg_spec += rspfString::toString(epsg_code);
      rspfProjection* proj = rspfEpsgProjectionFactory::instance()->createProjection(epsg_spec);
      if (proj)
         rspfProj = proj->getClassName();
      delete proj;
   }
   if(rspfProj == "") 
   {
      const char* pszProjection = OSRGetAttrValue( hSRS, "PROJECTION", 0 );
      if(pszProjection)
      {
         rspfProj = wktToOssimProjection(pszProjection);
      }
      else
//.........这里部分代码省略.........