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/******************************************************************************
*
* Project: OpenGIS Simple Features Reference Implementation
* Purpose: Implement importFromDict() method to read a WKT SRS from a
* coordinate system dictionary in a simple text format.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2004, Frank Warmerdam
*
* 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 "cpl_port.h"
#include "ogr_spatialref.h"
#include <cstring>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_string.h"
#include "cpl_vsi.h"
#include "ogr_core.h"
#include "ogr_srs_api.h"
/************************************************************************/
/* importFromDict() */
/************************************************************************/
/**
* Read SRS from WKT dictionary.
*
* This method will attempt to find the indicated coordinate system identity
* in the indicated dictionary file. If found, the WKT representation is
* imported and used to initialize this OGRSpatialReference.
*
* More complete information on the format of the dictionary files can
* be found in the epsg.wkt file in the GDAL data tree. The dictionary
* files are searched for in the "GDAL" domain using CPLFindFile(). Normally
* this results in searching /usr/local/share/gdal or somewhere similar.
*
* This method is the same as the C function OSRImportFromDict().
*
* @param pszDictFile the name of the dictionary file to load.
*
* @param pszCode the code to lookup in the dictionary.
*
* @return OGRERR_NONE on success, or OGRERR_SRS_UNSUPPORTED if the code isn't
* found, and OGRERR_SRS_FAILURE if something more dramatic goes wrong.
*/
OGRErr OGRSpatialReference::importFromDict(const char *pszDictFile,
const char *pszCode)
{
CPLString osWKT(lookupInDict(pszDictFile, pszCode));
if (osWKT.empty())
return OGRERR_UNSUPPORTED_SRS;
OGRErr eErr = importFromWkt(osWKT);
if (eErr == OGRERR_NONE && strstr(pszDictFile, "esri_") == nullptr)
{
morphFromESRI();
}
return eErr;
}
/************************************************************************/
/* lookupInDict() */
/************************************************************************/
CPLString OGRSpatialReference::lookupInDict(const char *pszDictFile,
const char *pszCode)
{
/* -------------------------------------------------------------------- */
/* Find and open file. */
/* -------------------------------------------------------------------- */
CPLString osDictFile(pszDictFile);
const char *pszFilename = CPLFindFile("gdal", pszDictFile);
if (pszFilename == nullptr)
return CPLString();
VSILFILE *fp = VSIFOpenL(pszFilename, "rb");
if (fp == nullptr)
return CPLString();
/* -------------------------------------------------------------------- */
/* Process lines. */
/* -------------------------------------------------------------------- */
CPLString osWKT;
const char *pszLine = nullptr;
while ((pszLine = CPLReadLineL(fp)) != nullptr)
{
if (pszLine[0] == '#')
continue;
if (STARTS_WITH_CI(pszLine, "include "))
{
osWKT = lookupInDict(pszLine + 8, pszCode);
if (!osWKT.empty())
break;
continue;
}
if (strstr(pszLine, ",") == nullptr)
continue;
if (EQUALN(pszLine, pszCode, strlen(pszCode)) &&
pszLine[strlen(pszCode)] == ',')
{
osWKT = pszLine + strlen(pszCode) + 1;
break;
}
}
/* -------------------------------------------------------------------- */
/* Cleanup */
/* -------------------------------------------------------------------- */
VSIFCloseL(fp);
return osWKT;
}
/************************************************************************/
/* OSRImportFromDict() */
/************************************************************************/
/**
* Read SRS from WKT dictionary.
*
* This method will attempt to find the indicated coordinate system identity
* in the indicated dictionary file. If found, the WKT representation is
* imported and used to initialize this OGRSpatialReference.
*
* More complete information on the format of the dictionary files can
* be found in the epsg.wkt file in the GDAL data tree. The dictionary
* files are searched for in the "GDAL" domain using CPLFindFile(). Normally
* this results in searching /usr/local/share/gdal or somewhere similar.
*
* This method is the same as the C++ method
* OGRSpatialReference::importFromDict().
*
* @param hSRS spatial reference system handle.
*
* @param pszDictFile the name of the dictionary file to load.
*
* @param pszCode the code to lookup in the dictionary.
*
* @return OGRERR_NONE on success, or OGRERR_SRS_UNSUPPORTED if the code isn't
* found, and OGRERR_SRS_FAILURE if something more dramatic goes wrong.
*/
OGRErr OSRImportFromDict(OGRSpatialReferenceH hSRS, const char *pszDictFile,
const char *pszCode)
{
VALIDATE_POINTER1(hSRS, "OSRImportFromDict", OGRERR_FAILURE);
return reinterpret_cast<OGRSpatialReference *>(hSRS)->importFromDict(
pszDictFile, pszCode);
}
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