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ogr_geocoding.cpp
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/******************************************************************************
*
* Project: OpenGIS Simple Features Reference Implementation
* Purpose: Client of geocoding service.
* Author: Even Rouault, <even dot rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2012-2013, Even Rouault <even dot rouault at spatialys.com>
*
* 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_geocoding.h"
#include <cstddef>
#include <cstring>
#include <string>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_http.h"
#include "cpl_minixml.h"
#include "cpl_multiproc.h"
#include "cpl_string.h"
#include "ogr_core.h"
#include "ogr_feature.h"
#include "ogr_geometry.h"
#include "ogr_mem.h"
#include "ogrsf_frmts.h"
// Emulation of gettimeofday() for Windows.
#ifdef WIN32
#include <time.h>
#include <windows.h>
// Recent mingw define struct timezone.
#if !(defined(__GNUC__) && defined(_TIMEZONE_DEFINED))
struct timezone
{
int tz_minuteswest; // Minutes W of Greenwich.
int tz_dsttime; // Type of DST correction.
};
#endif
constexpr int MICROSEC_IN_SEC = 1000000;
static int OGR_gettimeofday(struct timeval *tv,
struct timezone * /* tzIgnored */)
{
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
// In 100-nanosecond intervals since January 1, 1601 (UTC).
GUIntBig nVal =
(static_cast<GUIntBig>(ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
nVal /= 10; // To microseconds.
// There are 11 644 473 600 seconds between 1601 and 1970.
nVal -= static_cast<GUIntBig>(116444736) * 100 * MICROSEC_IN_SEC;
tv->tv_sec = static_cast<long>(nVal / MICROSEC_IN_SEC);
tv->tv_usec = static_cast<long>(nVal % MICROSEC_IN_SEC);
return 0;
}
#define gettimeofday OGR_gettimeofday
#else // !defined WIN32
#include <sys/time.h>
#endif // WIN32
struct _OGRGeocodingSessionHS
{
char *pszCacheFilename;
char *pszGeocodingService;
char *pszEmail;
char *pszUserName;
char *pszKey;
char *pszApplication;
char *pszLanguage;
char *pszQueryTemplate;
char *pszReverseQueryTemplate;
bool bReadCache;
bool bWriteCache;
double dfDelayBetweenQueries;
OGRDataSource *poDS;
};
static CPLMutex *hOGRGeocodingMutex = nullptr;
static double dfLastQueryTimeStampOSMNominatim = 0.0;
static double dfLastQueryTimeStampMapQuestNominatim = 0.0;
static const char OSM_NOMINATIM_QUERY[] =
"http://nominatim.openstreetmap.org/search?q=%s&format=xml&polygon_text=1";
static const char MAPQUEST_NOMINATIM_QUERY[] =
"http://open.mapquestapi.com/nominatim/v1/search.php?q=%s&format=xml";
static const char YAHOO_QUERY[] = "http://where.yahooapis.com/geocode?q=%s";
static const char GEONAMES_QUERY[] =
"http://api.geonames.org/search?q=%s&style=LONG";
static const char BING_QUERY[] =
"http://dev.virtualearth.net/REST/v1/Locations?q=%s&o=xml";
static const char OSM_NOMINATIM_REVERSE_QUERY[] =
"http://nominatim.openstreetmap.org/reverse?format=xml&lat={lat}&lon={lon}";
static const char MAPQUEST_NOMINATIM_REVERSE_QUERY[] =
"http://open.mapquestapi.com/nominatim/v1/"
"reverse.php?format=xml&lat={lat}&lon={lon}";
static const char YAHOO_REVERSE_QUERY[] =
"http://where.yahooapis.com/geocode?q={lat},{lon}&gflags=R";
static const char GEONAMES_REVERSE_QUERY[] =
"http://api.geonames.org/findNearby?lat={lat}&lng={lon}&style=LONG";
static const char BING_REVERSE_QUERY[] =
"http://dev.virtualearth.net/REST/v1/Locations/"
"{lat},{lon}?includeEntityTypes=countryRegion&o=xml";
static const char CACHE_LAYER_NAME[] = "ogr_geocode_cache";
static const char DEFAULT_CACHE_SQLITE[] = "ogr_geocode_cache.sqlite";
static const char DEFAULT_CACHE_CSV[] = "ogr_geocode_cache.csv";
static const char FIELD_URL[] = "url";
static const char FIELD_BLOB[] = "blob";
/************************************************************************/
/* OGRGeocodeGetParameter() */
/************************************************************************/
static const char *OGRGeocodeGetParameter(char **papszOptions,
const char *pszKey,
const char *pszDefaultValue)
{
const char *pszRet = CSLFetchNameValue(papszOptions, pszKey);
if (pszRet != nullptr)
return pszRet;
return CPLGetConfigOption(CPLSPrintf("OGR_GEOCODE_%s", pszKey),
pszDefaultValue);
}
/************************************************************************/
/* OGRGeocodeHasStringValidFormat() */
/************************************************************************/
// Checks that pszQueryTemplate has one and only one occurrence of %s in it.
static bool OGRGeocodeHasStringValidFormat(const char *pszQueryTemplate)
{
const char *pszIter = pszQueryTemplate;
bool bValidFormat = true;
bool bFoundPctS = false;
while (*pszIter != '\0')
{
if (*pszIter == '%')
{
if (pszIter[1] == '%')
{
++pszIter;
}
else if (pszIter[1] == 's')
{
if (bFoundPctS)
{
bValidFormat = false;
break;
}
bFoundPctS = true;
}
else
{
bValidFormat = false;
break;
}
}
++pszIter;
}
if (!bFoundPctS)
bValidFormat = false;
return bValidFormat;
}
/************************************************************************/
/* OGRGeocodeCreateSession() */
/************************************************************************/
/* clang-format off */
/**
* \brief Creates a session handle for geocoding requests.
*
* Available papszOptions values:
* <ul>
* <li> "CACHE_FILE" : Defaults to "ogr_geocode_cache.sqlite" (or otherwise
* "ogr_geocode_cache.csv" if the SQLite driver isn't
* available). Might be any CSV, SQLite or PostgreSQL
* datasource.
* <li> "READ_CACHE" : "TRUE" (default) or "FALSE"
* <li> "WRITE_CACHE" : "TRUE" (default) or "FALSE"
* <li> "SERVICE": <a href="http://wiki.openstreetmap.org/wiki/Nominatim">"OSM_NOMINATIM"</a>
* (default), <a href="http://open.mapquestapi.com/nominatim/">"MAPQUEST_NOMINATIM"</a>,
* <a href="http://developer.yahoo.com/geo/placefinder/">"YAHOO"</a>,
* <a href="http://www.geonames.org/export/geonames-search.html">"GEONAMES"</a>,
* <a href="http://msdn.microsoft.com/en-us/library/ff701714.aspx">"BING"</a> or
* other value.
* Note: "YAHOO" is no longer available as a free service.
* <li> "EMAIL": used by OSM_NOMINATIM. Optional, but recommended.
* <li> "USERNAME": used by GEONAMES. Compulsory in that case.
* <li> "KEY": used by BING. Compulsory in that case.
* <li> "APPLICATION": used to set the User-Agent MIME header. Defaults
* to GDAL/OGR version string.
* <li> "LANGUAGE": used to set the Accept-Language MIME header. Preferred
* language order for showing search results.
* <li> "DELAY": minimum delay, in second, between 2 consecutive queries.
* Defaults to 1.0.
* <li> "QUERY_TEMPLATE": URL template for GET requests. Must contain one
* and only one occurrence of %%s in it. If not specified, for
* SERVICE=OSM_NOMINATIM, MAPQUEST_NOMINATIM, YAHOO, GEONAMES or BING,
* the URL template is hard-coded.
* <li> "REVERSE_QUERY_TEMPLATE": URL template for GET requests for reverse
* geocoding. Must contain one and only one occurrence of {lon} and {lat}
* in it. If not specified, for SERVICE=OSM_NOMINATIM,
* MAPQUEST_NOMINATIM, YAHOO, GEONAMES or BING, the URL template is
* hard-coded.
* </ul>
*
* All the above options can also be set by defining the configuration option
* of the same name, prefixed by OGR_GEOCODE_. For example "OGR_GEOCODE_SERVICE"
* for the "SERVICE" option.
*
* @param papszOptions NULL, or a NULL-terminated list of string options.
*
* @return a handle that should be freed with OGRGeocodeDestroySession(), or
* NULL in case of failure.
*
* @since GDAL 1.10
*/
/* clang-format on */
OGRGeocodingSessionH OGRGeocodeCreateSession(char **papszOptions)
{
OGRGeocodingSessionH hSession = static_cast<OGRGeocodingSessionH>(
CPLCalloc(1, sizeof(_OGRGeocodingSessionHS)));
const char *pszCacheFilename = OGRGeocodeGetParameter(
papszOptions, "CACHE_FILE", DEFAULT_CACHE_SQLITE);
CPLString osExt = CPLGetExtension(pszCacheFilename);
if (!(STARTS_WITH_CI(pszCacheFilename, "PG:") || EQUAL(osExt, "csv") ||
EQUAL(osExt, "sqlite")))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Only .csv, .sqlite or PG: datasources are handled for now.");
OGRGeocodeDestroySession(hSession);
return nullptr;
}
hSession->pszCacheFilename = CPLStrdup(pszCacheFilename);
hSession->bReadCache =
CPLTestBool(OGRGeocodeGetParameter(papszOptions, "READ_CACHE", "TRUE"));
hSession->bWriteCache = CPLTestBool(
OGRGeocodeGetParameter(papszOptions, "WRITE_CACHE", "TRUE"));
const char *pszGeocodingService =
OGRGeocodeGetParameter(papszOptions, "SERVICE", "OSM_NOMINATIM");
hSession->pszGeocodingService = CPLStrdup(pszGeocodingService);
const char *pszEmail =
OGRGeocodeGetParameter(papszOptions, "EMAIL", nullptr);
hSession->pszEmail = pszEmail ? CPLStrdup(pszEmail) : nullptr;
const char *pszUserName =
OGRGeocodeGetParameter(papszOptions, "USERNAME", nullptr);
hSession->pszUserName = pszUserName ? CPLStrdup(pszUserName) : nullptr;
const char *pszKey = OGRGeocodeGetParameter(papszOptions, "KEY", nullptr);
hSession->pszKey = pszKey ? CPLStrdup(pszKey) : nullptr;
if (EQUAL(pszGeocodingService, "GEONAMES") && pszUserName == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"GEONAMES service requires USERNAME to be specified.");
OGRGeocodeDestroySession(hSession);
return nullptr;
}
else if (EQUAL(pszGeocodingService, "BING") && pszKey == nullptr)
{
CPLError(CE_Failure, CPLE_AppDefined,
"BING service requires KEY to be specified.");
OGRGeocodeDestroySession(hSession);
return nullptr;
}
const char *pszApplication = OGRGeocodeGetParameter(
papszOptions, "APPLICATION", GDALVersionInfo(""));
hSession->pszApplication = CPLStrdup(pszApplication);
const char *pszLanguage =
OGRGeocodeGetParameter(papszOptions, "LANGUAGE", nullptr);
hSession->pszLanguage = pszLanguage ? CPLStrdup(pszLanguage) : nullptr;
const char *pszDelayBetweenQueries =
OGRGeocodeGetParameter(papszOptions, "DELAY", "1.0");
// coverity[tainted_data]
hSession->dfDelayBetweenQueries = CPLAtofM(pszDelayBetweenQueries);
const char *pszQueryTemplateDefault = nullptr;
if (EQUAL(pszGeocodingService, "OSM_NOMINATIM"))
pszQueryTemplateDefault = OSM_NOMINATIM_QUERY;
else if (EQUAL(pszGeocodingService, "MAPQUEST_NOMINATIM"))
pszQueryTemplateDefault = MAPQUEST_NOMINATIM_QUERY;
else if (EQUAL(pszGeocodingService, "YAHOO"))
pszQueryTemplateDefault = YAHOO_QUERY;
else if (EQUAL(pszGeocodingService, "GEONAMES"))
pszQueryTemplateDefault = GEONAMES_QUERY;
else if (EQUAL(pszGeocodingService, "BING"))
pszQueryTemplateDefault = BING_QUERY;
const char *pszQueryTemplate = OGRGeocodeGetParameter(
papszOptions, "QUERY_TEMPLATE", pszQueryTemplateDefault);
if (pszQueryTemplate != nullptr &&
!OGRGeocodeHasStringValidFormat(pszQueryTemplate))
{
CPLError(CE_Failure, CPLE_AppDefined,
"QUERY_TEMPLATE value has an invalid format");
OGRGeocodeDestroySession(hSession);
return nullptr;
}
hSession->pszQueryTemplate =
pszQueryTemplate ? CPLStrdup(pszQueryTemplate) : nullptr;
const char *pszReverseQueryTemplateDefault = nullptr;
if (EQUAL(pszGeocodingService, "OSM_NOMINATIM"))
pszReverseQueryTemplateDefault = OSM_NOMINATIM_REVERSE_QUERY;
else if (EQUAL(pszGeocodingService, "MAPQUEST_NOMINATIM"))
pszReverseQueryTemplateDefault = MAPQUEST_NOMINATIM_REVERSE_QUERY;
else if (EQUAL(pszGeocodingService, "YAHOO"))
pszReverseQueryTemplateDefault = YAHOO_REVERSE_QUERY;
else if (EQUAL(pszGeocodingService, "GEONAMES"))
pszReverseQueryTemplateDefault = GEONAMES_REVERSE_QUERY;
else if (EQUAL(pszGeocodingService, "BING"))
pszReverseQueryTemplateDefault = BING_REVERSE_QUERY;
const char *pszReverseQueryTemplate = OGRGeocodeGetParameter(
papszOptions, "REVERSE_QUERY_TEMPLATE", pszReverseQueryTemplateDefault);
if (pszReverseQueryTemplate != nullptr &&
(strstr(pszReverseQueryTemplate, "{lat}") == nullptr ||
strstr(pszReverseQueryTemplate, "{lon}") == nullptr))
{
CPLError(CE_Failure, CPLE_AppDefined,
"REVERSE_QUERY_TEMPLATE value has an invalid format");
OGRGeocodeDestroySession(hSession);
return nullptr;
}
hSession->pszReverseQueryTemplate = (pszReverseQueryTemplate)
? CPLStrdup(pszReverseQueryTemplate)
: nullptr;
return hSession;
}
/************************************************************************/
/* OGRGeocodeDestroySession() */
/************************************************************************/
/**
* \brief Destroys a session handle for geocoding requests.
* @param hSession the handle to destroy.
*
* @since GDAL 1.10
*/
void OGRGeocodeDestroySession(OGRGeocodingSessionH hSession)
{
if (hSession == nullptr)
return;
CPLFree(hSession->pszCacheFilename);
CPLFree(hSession->pszGeocodingService);
CPLFree(hSession->pszEmail);
CPLFree(hSession->pszUserName);
CPLFree(hSession->pszKey);
CPLFree(hSession->pszApplication);
CPLFree(hSession->pszLanguage);
CPLFree(hSession->pszQueryTemplate);
CPLFree(hSession->pszReverseQueryTemplate);
if (hSession->poDS)
OGRReleaseDataSource(reinterpret_cast<OGRDataSourceH>(hSession->poDS));
CPLFree(hSession);
}
/************************************************************************/
/* OGRGeocodeGetCacheLayer() */
/************************************************************************/
static OGRLayer *OGRGeocodeGetCacheLayer(OGRGeocodingSessionH hSession,
bool bCreateIfNecessary,
int *pnIdxBlob)
{
OGRDataSource *poDS = hSession->poDS;
CPLString osExt = CPLGetExtension(hSession->pszCacheFilename);
if (poDS == nullptr)
{
if (OGRGetDriverCount() == 0)
OGRRegisterAll();
const bool bHadValue =
CPLGetConfigOption("OGR_SQLITE_SYNCHRONOUS", nullptr) != nullptr;
std::string oOldVal(CPLGetConfigOption("OGR_SQLITE_SYNCHRONOUS", ""));
CPLSetThreadLocalConfigOption("OGR_SQLITE_SYNCHRONOUS", "OFF");
poDS = reinterpret_cast<OGRDataSource *>(
OGROpen(hSession->pszCacheFilename, TRUE, nullptr));
if (poDS == nullptr &&
EQUAL(hSession->pszCacheFilename, DEFAULT_CACHE_SQLITE))
{
poDS = reinterpret_cast<OGRDataSource *>(
OGROpen(DEFAULT_CACHE_CSV, TRUE, nullptr));
if (poDS != nullptr)
{
CPLFree(hSession->pszCacheFilename);
hSession->pszCacheFilename = CPLStrdup(DEFAULT_CACHE_CSV);
CPLDebug("OGR", "Switch geocode cache file to %s",
hSession->pszCacheFilename);
osExt = "csv";
}
}
if (bCreateIfNecessary && poDS == nullptr &&
!STARTS_WITH_CI(hSession->pszCacheFilename, "PG:"))
{
OGRSFDriverH hDriver = OGRGetDriverByName(osExt);
if (hDriver == nullptr &&
EQUAL(hSession->pszCacheFilename, DEFAULT_CACHE_SQLITE))
{
CPLFree(hSession->pszCacheFilename);
hSession->pszCacheFilename = CPLStrdup(DEFAULT_CACHE_CSV);
CPLDebug("OGR", "Switch geocode cache file to %s",
hSession->pszCacheFilename);
osExt = "csv";
hDriver = OGRGetDriverByName(osExt);
}
if (hDriver != nullptr)
{
char **papszOptions = nullptr;
if (EQUAL(osExt, "SQLITE"))
{
papszOptions =
CSLAddNameValue(papszOptions, "METADATA", "FALSE");
}
poDS =
reinterpret_cast<OGRDataSource *>(OGR_Dr_CreateDataSource(
hDriver, hSession->pszCacheFilename, papszOptions));
if (poDS == nullptr &&
(EQUAL(osExt, "SQLITE") || EQUAL(osExt, "CSV")))
{
CPLFree(hSession->pszCacheFilename);
hSession->pszCacheFilename = CPLStrdup(CPLSPrintf(
"/vsimem/%s.%s", CACHE_LAYER_NAME, osExt.c_str()));
CPLDebug("OGR", "Switch geocode cache file to %s",
hSession->pszCacheFilename);
poDS = reinterpret_cast<OGRDataSource *>(
OGR_Dr_CreateDataSource(
hDriver, hSession->pszCacheFilename, papszOptions));
}
CSLDestroy(papszOptions);
}
}
CPLSetThreadLocalConfigOption("OGR_SQLITE_SYNCHRONOUS",
bHadValue ? oOldVal.c_str() : nullptr);
if (poDS == nullptr)
return nullptr;
hSession->poDS = poDS;
}
CPLPushErrorHandler(CPLQuietErrorHandler);
OGRLayer *poLayer = poDS->GetLayerByName(CACHE_LAYER_NAME);
CPLPopErrorHandler();
if (bCreateIfNecessary && poLayer == nullptr)
{
char **papszOptions = nullptr;
if (EQUAL(osExt, "SQLITE"))
{
papszOptions =
CSLAddNameValue(papszOptions, "COMPRESS_COLUMNS", FIELD_BLOB);
}
poLayer =
poDS->CreateLayer(CACHE_LAYER_NAME, nullptr, wkbNone, papszOptions);
CSLDestroy(papszOptions);
if (poLayer != nullptr)
{
OGRFieldDefn oFieldDefnURL(FIELD_URL, OFTString);
poLayer->CreateField(&oFieldDefnURL);
OGRFieldDefn oFieldDefnBlob(FIELD_BLOB, OFTString);
poLayer->CreateField(&oFieldDefnBlob);
if (EQUAL(osExt, "SQLITE") ||
STARTS_WITH_CI(hSession->pszCacheFilename, "PG:"))
{
const char *pszSQL = CPLSPrintf(
"CREATE INDEX idx_%s_%s ON %s(%s)", FIELD_URL,
poLayer->GetName(), poLayer->GetName(), FIELD_URL);
poDS->ExecuteSQL(pszSQL, nullptr, nullptr);
}
}
}
int nIdxBlob = -1;
if (poLayer == nullptr ||
poLayer->GetLayerDefn()->GetFieldIndex(FIELD_URL) < 0 ||
(nIdxBlob = poLayer->GetLayerDefn()->GetFieldIndex(FIELD_BLOB)) < 0)
{
return nullptr;
}
if (pnIdxBlob)
*pnIdxBlob = nIdxBlob;
return poLayer;
}
/************************************************************************/
/* OGRGeocodeGetFromCache() */
/************************************************************************/
static char *OGRGeocodeGetFromCache(OGRGeocodingSessionH hSession,
const char *pszURL)
{
CPLMutexHolderD(&hOGRGeocodingMutex);
int nIdxBlob = -1;
OGRLayer *poLayer = OGRGeocodeGetCacheLayer(hSession, FALSE, &nIdxBlob);
if (poLayer == nullptr)
return nullptr;
char *pszSQLEscapedURL = CPLEscapeString(pszURL, -1, CPLES_SQL);
poLayer->SetAttributeFilter(
CPLSPrintf("%s='%s'", FIELD_URL, pszSQLEscapedURL));
CPLFree(pszSQLEscapedURL);
char *pszRet = nullptr;
OGRFeature *poFeature = poLayer->GetNextFeature();
if (poFeature != nullptr)
{
if (poFeature->IsFieldSetAndNotNull(nIdxBlob))
pszRet = CPLStrdup(poFeature->GetFieldAsString(nIdxBlob));
OGRFeature::DestroyFeature(poFeature);
}
return pszRet;
}
/************************************************************************/
/* OGRGeocodePutIntoCache() */
/************************************************************************/
static bool OGRGeocodePutIntoCache(OGRGeocodingSessionH hSession,
const char *pszURL, const char *pszContent)
{
CPLMutexHolderD(&hOGRGeocodingMutex);
int nIdxBlob = -1;
OGRLayer *poLayer = OGRGeocodeGetCacheLayer(hSession, TRUE, &nIdxBlob);
if (poLayer == nullptr)
return false;
OGRFeature *poFeature = new OGRFeature(poLayer->GetLayerDefn());
poFeature->SetField(FIELD_URL, pszURL);
poFeature->SetField(FIELD_BLOB, pszContent);
const bool bRet = poLayer->CreateFeature(poFeature) == OGRERR_NONE;
delete poFeature;
return bRet;
}
/************************************************************************/
/* OGRGeocodeMakeRawLayer() */
/************************************************************************/
static OGRLayerH OGRGeocodeMakeRawLayer(const char *pszContent)
{
OGRMemLayer *poLayer = new OGRMemLayer("result", nullptr, wkbNone);
OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
OGRFieldDefn oFieldDefnRaw("raw", OFTString);
poLayer->CreateField(&oFieldDefnRaw);
OGRFeature *poFeature = new OGRFeature(poFDefn);
poFeature->SetField("raw", pszContent);
CPL_IGNORE_RET_VAL(poLayer->CreateFeature(poFeature));
delete poFeature;
return OGRLayer::ToHandle(poLayer);
}
/************************************************************************/
/* OGRGeocodeBuildLayerNominatim() */
/************************************************************************/
static OGRLayerH OGRGeocodeBuildLayerNominatim(CPLXMLNode *psSearchResults,
const char * /* pszContent */,
const bool bAddRawFeature)
{
OGRMemLayer *poLayer = new OGRMemLayer("place", nullptr, wkbUnknown);
OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
CPLXMLNode *psPlace = psSearchResults->psChild;
// First iteration to add fields.
while (psPlace != nullptr)
{
if (psPlace->eType == CXT_Element &&
(strcmp(psPlace->pszValue, "place") == 0 || // Nominatim.
strcmp(psPlace->pszValue, "geoname") == 0))
{
CPLXMLNode *psChild = psPlace->psChild;
while (psChild != nullptr)
{
const char *pszName = psChild->pszValue;
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
poFDefn->GetFieldIndex(pszName) < 0 &&
strcmp(pszName, "geotext") != 0)
{
OGRFieldDefn oFieldDefn(pszName, OFTString);
if (strcmp(pszName, "place_rank") == 0)
{
oFieldDefn.SetType(OFTInteger);
}
else if (strcmp(pszName, "lat") == 0)
{
oFieldDefn.SetType(OFTReal);
}
else if (strcmp(pszName, "lon") == 0 || // Nominatim.
strcmp(pszName, "lng") == 0) // Geonames.
{
oFieldDefn.SetType(OFTReal);
}
poLayer->CreateField(&oFieldDefn);
}
psChild = psChild->psNext;
}
}
psPlace = psPlace->psNext;
}
if (bAddRawFeature)
{
OGRFieldDefn oFieldDefnRaw("raw", OFTString);
poLayer->CreateField(&oFieldDefnRaw);
}
psPlace = psSearchResults->psChild;
while (psPlace != nullptr)
{
if (psPlace->eType == CXT_Element &&
(strcmp(psPlace->pszValue, "place") == 0 || // Nominatim.
strcmp(psPlace->pszValue, "geoname") == 0)) // Geonames.
{
bool bFoundLat = false;
bool bFoundLon = false;
double dfLat = 0.0;
double dfLon = 0.0;
// Iteration to fill the feature.
OGRFeature *poFeature = new OGRFeature(poFDefn);
for (CPLXMLNode *psChild = psPlace->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
const char *pszName = psChild->pszValue;
const char *pszVal = CPLGetXMLValue(psChild, nullptr, nullptr);
if (!(psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute))
{
// Do nothing.
continue;
}
const int nIdx = poFDefn->GetFieldIndex(pszName);
if (nIdx >= 0)
{
if (pszVal != nullptr)
{
poFeature->SetField(nIdx, pszVal);
if (strcmp(pszName, "lat") == 0)
{
bFoundLat = true;
dfLat = CPLAtofM(pszVal);
}
else if (strcmp(pszName, "lon") == 0 || // Nominatim.
strcmp(pszName, "lng") == 0) // Geonames.
{
bFoundLon = true;
dfLon = CPLAtofM(pszVal);
}
}
}
else if (strcmp(pszName, "geotext") == 0)
{
if (pszVal != nullptr)
{
OGRGeometry *poGeometry = nullptr;
OGRGeometryFactory::createFromWkt(pszVal, nullptr,
&poGeometry);
if (poGeometry)
poFeature->SetGeometryDirectly(poGeometry);
}
}
}
if (bAddRawFeature)
{
CPLXMLNode *psOldNext = psPlace->psNext;
psPlace->psNext = nullptr;
char *pszXML = CPLSerializeXMLTree(psPlace);
psPlace->psNext = psOldNext;
poFeature->SetField("raw", pszXML);
CPLFree(pszXML);
}
// If we did not find an explicit geometry, build it from
// the 'lon' and 'lat' attributes.
if (poFeature->GetGeometryRef() == nullptr && bFoundLon &&
bFoundLat)
poFeature->SetGeometryDirectly(new OGRPoint(dfLon, dfLat));
CPL_IGNORE_RET_VAL(poLayer->CreateFeature(poFeature));
delete poFeature;
}
psPlace = psPlace->psNext;
}
return OGRLayer::ToHandle(poLayer);
}
/************************************************************************/
/* OGRGeocodeReverseBuildLayerNominatim() */
/************************************************************************/
static OGRLayerH OGRGeocodeReverseBuildLayerNominatim(
CPLXMLNode *psReverseGeocode, const char *pszContent, bool bAddRawFeature)
{
CPLXMLNode *psResult = CPLGetXMLNode(psReverseGeocode, "result");
CPLXMLNode *psAddressParts =
CPLGetXMLNode(psReverseGeocode, "addressparts");
if (psResult == nullptr || psAddressParts == nullptr)
{
return nullptr;
}
OGRMemLayer *poLayer = new OGRMemLayer("result", nullptr, wkbNone);
OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
bool bFoundLat = false;
bool bFoundLon = false;
double dfLat = 0.0;
double dfLon = 0.0;
// First iteration to add fields.
CPLXMLNode *psChild = psResult->psChild;
while (psChild != nullptr)
{
const char *pszName = psChild->pszValue;
const char *pszVal = CPLGetXMLValue(psChild, nullptr, nullptr);
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
poFDefn->GetFieldIndex(pszName) < 0)
{
OGRFieldDefn oFieldDefn(pszName, OFTString);
if (strcmp(pszName, "lat") == 0)
{
if (pszVal != nullptr)
{
bFoundLat = true;
dfLat = CPLAtofM(pszVal);
}
oFieldDefn.SetType(OFTReal);
}
else if (strcmp(pszName, "lon") == 0)
{
if (pszVal != nullptr)
{
bFoundLon = true;
dfLon = CPLAtofM(pszVal);
}
oFieldDefn.SetType(OFTReal);
}
poLayer->CreateField(&oFieldDefn);
}
psChild = psChild->psNext;
}
{
OGRFieldDefn oFieldDefn("display_name", OFTString);
poLayer->CreateField(&oFieldDefn);
}
psChild = psAddressParts->psChild;
while (psChild != nullptr)
{
const char *pszName = psChild->pszValue;
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
poFDefn->GetFieldIndex(pszName) < 0)
{
OGRFieldDefn oFieldDefn(pszName, OFTString);
poLayer->CreateField(&oFieldDefn);
}
psChild = psChild->psNext;
}
if (bAddRawFeature)
{
OGRFieldDefn oFieldDefnRaw("raw", OFTString);
poLayer->CreateField(&oFieldDefnRaw);
}
// Second iteration to fill the feature.
OGRFeature *poFeature = new OGRFeature(poFDefn);
psChild = psResult->psChild;
while (psChild != nullptr)
{
int nIdx = 0;
const char *pszName = psChild->pszValue;
const char *pszVal = CPLGetXMLValue(psChild, nullptr, nullptr);
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
(nIdx = poFDefn->GetFieldIndex(pszName)) >= 0)
{
if (pszVal != nullptr)
poFeature->SetField(nIdx, pszVal);
}
psChild = psChild->psNext;
}
const char *pszVal = CPLGetXMLValue(psResult, nullptr, nullptr);
if (pszVal != nullptr)
poFeature->SetField("display_name", pszVal);
psChild = psAddressParts->psChild;
while (psChild != nullptr)
{
int nIdx = 0;
const char *pszName = psChild->pszValue;
pszVal = CPLGetXMLValue(psChild, nullptr, nullptr);
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
(nIdx = poFDefn->GetFieldIndex(pszName)) >= 0)
{
if (pszVal != nullptr)
poFeature->SetField(nIdx, pszVal);
}
psChild = psChild->psNext;
}
if (bAddRawFeature)
{
poFeature->SetField("raw", pszContent);
}
// If we did not find an explicit geometry, build it from
// the 'lon' and 'lat' attributes.
if (poFeature->GetGeometryRef() == nullptr && bFoundLon && bFoundLat)
poFeature->SetGeometryDirectly(new OGRPoint(dfLon, dfLat));
CPL_IGNORE_RET_VAL(poLayer->CreateFeature(poFeature));
delete poFeature;
return OGRLayer::ToHandle(poLayer);
}
/************************************************************************/
/* OGRGeocodeBuildLayerYahoo() */
/************************************************************************/
static OGRLayerH OGRGeocodeBuildLayerYahoo(CPLXMLNode *psResultSet,
const char * /* pszContent */,
bool bAddRawFeature)
{
OGRMemLayer *poLayer = new OGRMemLayer("place", nullptr, wkbPoint);
OGRFeatureDefn *poFDefn = poLayer->GetLayerDefn();
// First iteration to add fields.
CPLXMLNode *psPlace = psResultSet->psChild;
while (psPlace != nullptr)
{
if (psPlace->eType == CXT_Element &&
strcmp(psPlace->pszValue, "Result") == 0)
{
CPLXMLNode *psChild = psPlace->psChild;
while (psChild != nullptr)
{
const char *pszName = psChild->pszValue;
if ((psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute) &&
poFDefn->GetFieldIndex(pszName) < 0)
{
OGRFieldDefn oFieldDefn(pszName, OFTString);
if (strcmp(pszName, "latitude") == 0)
{
oFieldDefn.SetType(OFTReal);
}
else if (strcmp(pszName, "longitude") == 0)
{
oFieldDefn.SetType(OFTReal);
}
poLayer->CreateField(&oFieldDefn);
}
psChild = psChild->psNext;
}
}
psPlace = psPlace->psNext;
}
OGRFieldDefn oFieldDefnDisplayName("display_name", OFTString);
poLayer->CreateField(&oFieldDefnDisplayName);
if (bAddRawFeature)
{
OGRFieldDefn oFieldDefnRaw("raw", OFTString);
poLayer->CreateField(&oFieldDefnRaw);
}
psPlace = psResultSet->psChild;
while (psPlace != nullptr)
{
if (psPlace->eType == CXT_Element &&
strcmp(psPlace->pszValue, "Result") == 0)
{
bool bFoundLat = false;
bool bFoundLon = false;
double dfLat = 0.0;
double dfLon = 0.0;
// Second iteration to fill the feature.
OGRFeature *poFeature = new OGRFeature(poFDefn);
for (CPLXMLNode *psChild = psPlace->psChild; psChild != nullptr;
psChild = psChild->psNext)
{
const char *pszName = psChild->pszValue;
const char *pszVal = CPLGetXMLValue(psChild, nullptr, nullptr);
if (!(psChild->eType == CXT_Element ||
psChild->eType == CXT_Attribute))
{
// Do nothing.
continue;
}
const int nIdx = poFDefn->GetFieldIndex(pszName);
if (nIdx >= 0)
{
if (pszVal != nullptr)
{
poFeature->SetField(nIdx, pszVal);
if (strcmp(pszName, "latitude") == 0)
{
bFoundLat = true;
dfLat = CPLAtofM(pszVal);
}
else if (strcmp(pszName, "longitude") == 0)
{
bFoundLon = true;
dfLon = CPLAtofM(pszVal);
}
}
}
}
CPLString osDisplayName;
for (int i = 1;; ++i)
{
const int nIdx =
poFDefn->GetFieldIndex(CPLSPrintf("line%d", i));
if (nIdx < 0)
break;
if (poFeature->IsFieldSetAndNotNull(nIdx))
{
if (!osDisplayName.empty())
osDisplayName += ", ";
osDisplayName += poFeature->GetFieldAsString(nIdx);
}
}
poFeature->SetField("display_name", osDisplayName.c_str());