/****************************************************************************** * $Id: ogrogdidatasource.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  OGDI Bridge * Purpose:  Implements OGROGDIDataSource class. * Author:   Daniel Morissette, danmo@videotron.ca *           (Based on some code contributed by Frank Warmerdam :) * ****************************************************************************** * Copyright (c) 2000, Daniel Morissette * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/#include "ogrogdi.h"#include "cpl_conv.h"#include "cpl_string.h"CPL_CVSID("$Id: ogrogdidatasource.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//*                         OGROGDIDataSource()                          *//************************************************************************/OGROGDIDataSource::OGROGDIDataSource(){    m_pszFullName = NULL;    m_papoLayers = NULL;    m_nLayers = 0;    m_nClientID = -1;    m_poSpatialRef = NULL;    m_poCurrentLayer = NULL;}/************************************************************************//*                         ~OGROGDIDataSource()                         *//************************************************************************/OGROGDIDataSource::~OGROGDIDataSource(){    CPLFree(m_pszFullName );    for( int i = 0; i < m_nLayers; i++ )        delete m_papoLayers[i];    CPLFree( m_papoLayers );    if (m_nClientID != -1)    {        ecs_Result *psResult;        psResult = cln_DestroyClient( m_nClientID );        ecs_CleanUp( psResult );    }    if (m_poSpatialRef)        m_poSpatialRef->Release();}/************************************************************************//*                                Open()                                *//************************************************************************/int OGROGDIDataSource::Open( const char * pszNewName, int bTestOpen ){    ecs_Result *psResult;    char *pszFamily=NULL, *pszLyrName=NULL;    char *pszWorkingName;    CPLAssert( m_nLayers == 0 );    /* -------------------------------------------------------------------- *//*      Parse the dataset name.                                         *//*      i.e.                                                            *//* gltp://<hostname>/<format>/<path_to_dataset>[:<layer_name>:<Family>] *//*                                                                      *//*      Where <Family> is one of: Line, Area, Point, and Text           *//* -------------------------------------------------------------------- */        if( !EQUALN(pszNewName,"gltp:",5) )            return FALSE;        pszWorkingName = CPLStrdup( pszNewName );        pszFamily = strrchr(pszWorkingName, ':');        // Don't treat drive name colon as family separator.  It is assumed        // that drive names are on character long, and preceeded by a         // forward or backward slash.        if( pszFamily < pszWorkingName+2             || pszFamily[-2] == '/'            || pszFamily[-2] == '\\' )            pszFamily = NULL;                if (pszFamily && pszFamily != pszWorkingName + 4)        {            *pszFamily = '\0';            pszFamily++;            pszLyrName = strrchr(pszWorkingName, ':');            if (pszLyrName == pszWorkingName + 4)                pszLyrName = NULL;            if( pszLyrName != NULL )            {                *pszLyrName = '\0';                pszLyrName++;            }        }/* -------------------------------------------------------------------- *//*      Open the client interface.                                      *//* -------------------------------------------------------------------- */        psResult = cln_CreateClient(&m_nClientID, pszWorkingName);        CPLFree( pszWorkingName );        if( ECSERROR( psResult ) )        {            if (!bTestOpen)            {                CPLError( CE_Failure, CPLE_AppDefined,                          "OGDI DataSource Open Failed: %s\n",                          psResult->message );            }            return FALSE;        }        m_pszFullName = CPLStrdup(pszNewName);/* -------------------------------------------------------------------- *//*      Capture some information from the file.                         *//* -------------------------------------------------------------------- */        psResult = cln_GetGlobalBound( m_nClientID );        if( ECSERROR(psResult) )        {            CPLError( CE_Failure, CPLE_AppDefined,                      "%s", psResult->message );            return FALSE;        }        m_sGlobalBounds = ECSREGION(psResult);        psResult = cln_GetServerProjection(m_nClientID);        if( ECSERROR(psResult) )        {            CPLError( CE_Failure, CPLE_AppDefined,                      "%s", psResult->message );            return FALSE;        }        m_poSpatialRef = new OGRSpatialReference;        if( m_poSpatialRef->importFromProj4( ECSTEXT(psResult) ) != OGRERR_NONE )        {            CPLError( CE_Warning, CPLE_NotSupported,                      "untranslatable PROJ.4 projection: %s\n",                       ECSTEXT(psResult) );            delete m_poSpatialRef;            m_poSpatialRef = NULL;        }/* -------------------------------------------------------------------- *//*      Select the global region.                                       *//* -------------------------------------------------------------------- */        psResult = cln_SelectRegion( m_nClientID, &m_sGlobalBounds );        if( ECSERROR(psResult) )        {            CPLError( CE_Failure, CPLE_AppDefined,                      "%s", psResult->message );            return FALSE;        }    /* -------------------------------------------------------------------- *//*      If an explicit layer was selected, just create that layer.      *//* -------------------------------------------------------------------- */        m_poCurrentLayer = NULL;        if( pszLyrName != NULL )        {            ecs_Family  eFamily;            if (EQUAL(pszFamily, "Line"))                eFamily = Line;            else if (EQUAL(pszFamily, "Area"))                eFamily = Area;            else if (EQUAL(pszFamily, "Point"))                eFamily = Point;            else if (EQUAL(pszFamily, "Text"))                eFamily = Text;            else            {                if (!bTestOpen)                {                    CPLError( CE_Failure, CPLE_AppDefined,                              "Invalid or unsupported family name (%s) in URL %s\n",                              pszFamily, m_pszFullName);                }                return FALSE;            }            IAddLayer( pszLyrName, eFamily );        }/* -------------------------------------------------------------------- *//*      Otherwise create a layer for every layer in the capabilities.   *//* -------------------------------------------------------------------- */        else        {            int         i;            const ecs_LayerCapabilities *psLayerCap;            for( i = 0;                 (psLayerCap = cln_GetLayerCapabilities(m_nClientID,i)) != NULL;                 i++ )            {                if( psLayerCap->families[Point] )                    IAddLayer( psLayerCap->name, Point );                if( psLayerCap->families[Line] )                    IAddLayer( psLayerCap->name, Line );                if( psLayerCap->families[Area] )                    IAddLayer( psLayerCap->name, Area );                if( psLayerCap->families[Text] )                    IAddLayer( psLayerCap->name, Text );            }        }        return TRUE;}/************************************************************************//*                             IAddLayer()                              *//*                                                                      *//*      Internal helper function for adding one existing layer to       *//*      the datasource.                                                 *//************************************************************************/void OGROGDIDataSource::IAddLayer( const char *pszLayerName,                                    ecs_Family eFamily ){    m_papoLayers = (OGROGDILayer**)        CPLRealloc( m_papoLayers, (m_nLayers+1) * sizeof(OGROGDILayer*));        m_papoLayers[m_nLayers++] = new OGROGDILayer(this, pszLayerName, eFamily);}/************************************************************************//*                           TestCapability()                           *//************************************************************************/int OGROGDIDataSource::TestCapability( const char * pszCap ){    return FALSE;}/************************************************************************//*                              GetLayer()                              *//************************************************************************/OGRLayer *OGROGDIDataSource::GetLayer( int iLayer ){    if( iLayer < 0 || iLayer >= m_nLayers )        return NULL;    else        return m_papoLayers[iLayer];}