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mapogroutput.c
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mapogroutput.c
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/**********************************************************************
* $Id$
*
* Project: MapServer
* Purpose: OGR Output (for WFS)
* Author: Frank Warmerdam (warmerdam@pobox.com)
*
**********************************************************************
* Copyright (c) 2010, Frank Warmerdam <warmerdam@pobox.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 of this Software or works derived from this 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 <assert.h>
#include "mapserver.h"
#include "mapproject.h"
#include "mapthread.h"
#if defined(USE_OGR)
# define __USE_LARGEFILE64 1
# include "ogr_api.h"
# include "ogr_srs_api.h"
# include "cpl_conv.h"
# include "cpl_vsi.h"
# include "cpl_string.h"
#endif
#ifdef USE_OGR
/************************************************************************/
/* msInitOGROutputFormat() */
/************************************************************************/
int msInitDefaultOGROutputFormat( outputFormatObj *format )
{
OGRSFDriverH hDriver;
msOGRInitialize();
/* -------------------------------------------------------------------- */
/* check that this driver exists. Note visiting drivers should */
/* be pretty threadsafe so don't bother acquiring the GDAL */
/* lock. */
/* -------------------------------------------------------------------- */
hDriver = OGRGetDriverByName( format->driver+4 );
if( hDriver == NULL ) {
msSetError( MS_MISCERR, "No OGR driver named `%s' available.",
"msInitOGROutputFormat()", format->driver+4 );
return MS_FAILURE;
}
if( !OGR_Dr_TestCapability( hDriver, ODrCCreateDataSource ) ) {
msSetError( MS_MISCERR, "OGR `%s' driver does not support output.",
"msInitOGROutputFormat()", format->driver+4 );
return MS_FAILURE;
}
/* -------------------------------------------------------------------- */
/* Initialize the object. */
/* -------------------------------------------------------------------- */
format->imagemode = MS_IMAGEMODE_FEATURE;
format->renderer = MS_RENDER_WITH_OGR;
/* perhaps we should eventually hardcode mimetypes and extensions
for some formats? */
return MS_SUCCESS;
}
/************************************************************************/
/* msOGRRecursiveFileList() */
/* */
/* Collect a list of all files under the named directory, */
/* including those in subdirectories. */
/************************************************************************/
char **msOGRRecursiveFileList( const char *path )
{
char **file_list;
char **result_list = NULL;
int i, count, change;
file_list = CPLReadDir( path );
count = CSLCount(file_list);
/* -------------------------------------------------------------------- */
/* Sort the file list so we always get them back in the same */
/* order - it makes autotests more stable. */
/* -------------------------------------------------------------------- */
do {
change = 0;
for( i = 0; i < count-1; i++ ) {
if( strcasecmp(file_list[i],file_list[i+1]) > 0 ) {
char *temp = file_list[i];
file_list[i] = file_list[i+1];
file_list[i+1] = temp;
change = 1;
}
}
} while( change );
/* -------------------------------------------------------------------- */
/* collect names we want and process subdirectories. */
/* -------------------------------------------------------------------- */
for( i = 0; i < count; i++ ) {
char full_filename[MS_MAXPATHLEN];
VSIStatBufL sStatBuf;
if( EQUAL(file_list[i],".") || EQUAL(file_list[i],"..") )
continue;
strlcpy( full_filename,
CPLFormFilename( path, file_list[i], NULL ),
sizeof(full_filename) );
VSIStatL( full_filename, &sStatBuf );
if( VSI_ISREG( sStatBuf.st_mode ) ) {
result_list = CSLAddString( result_list, full_filename );
} else if( VSI_ISDIR( sStatBuf.st_mode ) ) {
char **subfiles = msOGRRecursiveFileList( full_filename );
result_list = CSLMerge( result_list, subfiles );
CSLDestroy( subfiles );
}
}
CSLDestroy( file_list );
return result_list;
}
/************************************************************************/
/* msOGRCleanupDS() */
/************************************************************************/
static void msOGRCleanupDS( const char *datasource_name )
{
char **file_list;
char path[MS_MAXPATHLEN];
int i;
strlcpy( path, CPLGetPath( datasource_name ), sizeof(path) );
file_list = CPLReadDir( path );
for( i = 0; file_list != NULL && file_list[i] != NULL; i++ ) {
char full_filename[MS_MAXPATHLEN];
VSIStatBufL sStatBuf;
if( EQUAL(file_list[i],".") || EQUAL(file_list[i],"..") )
continue;
strlcpy( full_filename,
CPLFormFilename( path, file_list[i], NULL ),
sizeof(full_filename) );
VSIStatL( full_filename, &sStatBuf );
if( VSI_ISREG( sStatBuf.st_mode ) ) {
VSIUnlink( full_filename );
} else if( VSI_ISDIR( sStatBuf.st_mode ) ) {
char fake_ds_name[MS_MAXPATHLEN];
strlcpy( fake_ds_name,
CPLFormFilename( full_filename, "abc.dat", NULL ),
sizeof(fake_ds_name) );
msOGRCleanupDS( fake_ds_name );
}
}
CSLDestroy( file_list );
VSIRmdir( path );
}
/************************************************************************/
/* msOGRWriteShape() */
/************************************************************************/
static int msOGRWriteShape( layerObj *map_layer, OGRLayerH hOGRLayer,
shapeObj *shape, gmlItemListObj *item_list )
{
OGRGeometryH hGeom = NULL;
OGRFeatureH hFeat;
OGRErr eErr;
int i, out_field;
OGRwkbGeometryType eLayerGType, eFeatureGType = wkbUnknown;
OGRFeatureDefnH hLayerDefn;
hLayerDefn = OGR_L_GetLayerDefn( hOGRLayer );
eLayerGType = OGR_FD_GetGeomType(hLayerDefn);
/* -------------------------------------------------------------------- */
/* Transform point geometry. */
/* -------------------------------------------------------------------- */
if( shape->type == MS_SHAPE_POINT ) {
OGRGeometryH hMP = NULL;
int j;
if( shape->numlines < 1 ) {
msSetError(MS_MISCERR,
"Failed on odd point geometry.",
"msOGRWriteShape()");
return MS_FAILURE;
}
if( shape->numlines > 1 )
hMP = OGR_G_CreateGeometry( wkbMultiPoint );
for( j = 0; j < shape->numlines; j++ ) {
if( shape->line[j].numpoints != 1 ) {
msSetError(MS_MISCERR,
"Failed on odd point geometry.",
"msOGRWriteShape()");
return MS_FAILURE;
}
hGeom = OGR_G_CreateGeometry( wkbPoint );
OGR_G_SetPoint( hGeom, 0,
shape->line[j].point[0].x,
shape->line[j].point[0].y,
#ifdef USE_POINT_Z_M
shape->line[j].point[0].z
#else
0.0
#endif
);
if( hMP != NULL ) {
OGR_G_AddGeometryDirectly( hMP, hGeom );
hGeom = hMP;
}
}
}
/* -------------------------------------------------------------------- */
/* Transform line geometry. */
/* -------------------------------------------------------------------- */
else if( shape->type == MS_SHAPE_LINE ) {
OGRGeometryH hML = NULL;
int j;
if( shape->numlines < 1 || shape->line[0].numpoints < 2 ) {
msSetError(MS_MISCERR,
"Failed on odd line geometry.",
"msOGRWriteShape()");
return MS_FAILURE;
}
if( shape->numlines > 1 )
hML = OGR_G_CreateGeometry( wkbMultiLineString );
for( j = 0; j < shape->numlines; j++ ) {
hGeom = OGR_G_CreateGeometry( wkbLineString );
for( i = 0; i < shape->line[j].numpoints; i++ ) {
OGR_G_SetPoint( hGeom, i,
shape->line[j].point[i].x,
shape->line[j].point[i].y,
#ifdef USE_POINT_Z_M
shape->line[j].point[i].z
#else
0.0
#endif
);
}
if( hML != NULL ) {
OGR_G_AddGeometryDirectly( hML, hGeom );
hGeom = hML;
}
}
}
/* -------------------------------------------------------------------- */
/* Transform polygon geometry. */
/* -------------------------------------------------------------------- */
else if( shape->type == MS_SHAPE_POLYGON ) {
int iRing, iOuter;
int *outer_flags;
OGRGeometryH hMP;
if( shape->numlines < 1 ) {
msSetError(MS_MISCERR,
"Failed on odd polygon geometry.",
"msOGRWriteShape()");
return MS_FAILURE;
}
outer_flags = msGetOuterList( shape );
hMP = OGR_G_CreateGeometry( wkbMultiPolygon );
for( iOuter = 0; iOuter < shape->numlines; iOuter++ ) {
int *inner_flags;
OGRGeometryH hRing;
if( !outer_flags[iOuter] )
continue;
hGeom = OGR_G_CreateGeometry( wkbPolygon );
/* handle outer ring */
hRing = OGR_G_CreateGeometry( wkbLinearRing );
for( i = 0; i < shape->line[iOuter].numpoints; i++ ) {
OGR_G_SetPoint( hRing, i,
shape->line[iOuter].point[i].x,
shape->line[iOuter].point[i].y,
#ifdef USE_POINT_Z_M
shape->line[iOuter].point[i].z
#else
0.0
#endif
);
}
OGR_G_AddGeometryDirectly( hGeom, hRing );
/* handle inner rings (holes) */
inner_flags = msGetInnerList( shape, iOuter, outer_flags );
for( iRing = 0; iRing < shape->numlines; iRing++ ) {
if( !inner_flags[iRing] )
continue;
hRing = OGR_G_CreateGeometry( wkbLinearRing );
for( i = 0; i < shape->line[iRing].numpoints; i++ ) {
OGR_G_SetPoint( hRing, i,
shape->line[iRing].point[i].x,
shape->line[iRing].point[i].y,
#ifdef USE_POINT_Z_M
shape->line[iRing].point[i].z
#else
0.0
#endif
);
}
OGR_G_AddGeometryDirectly( hGeom, hRing );
}
free(inner_flags);
OGR_G_AddGeometryDirectly( hMP, hGeom );
}
free(outer_flags);
if( OGR_G_GetGeometryCount( hMP ) == 1 ) {
hGeom = OGR_G_Clone( OGR_G_GetGeometryRef( hMP, 0 ) );
OGR_G_DestroyGeometry( hMP );
} else {
hGeom = hMP;
}
}
/* -------------------------------------------------------------------- */
/* Consider trying to force the geometry to a new type if it */
/* doesn't match the layer. */
/* -------------------------------------------------------------------- */
eLayerGType =
wkbFlatten(OGR_FD_GetGeomType(hLayerDefn));
if( hGeom != NULL )
eFeatureGType = wkbFlatten(OGR_G_GetGeometryType( hGeom ));
#if defined(GDAL_VERSION_NUM) && (GDAL_VERSION_NUM >= 1800)
if( hGeom != NULL
&& eLayerGType == wkbPolygon
&& eFeatureGType != eLayerGType )
hGeom = OGR_G_ForceToPolygon( hGeom );
else if( hGeom != NULL
&& eLayerGType == wkbMultiPolygon
&& eFeatureGType != eLayerGType )
hGeom = OGR_G_ForceToMultiPolygon( hGeom );
else if( hGeom != NULL
&& eLayerGType == wkbMultiPoint
&& eFeatureGType != eLayerGType )
hGeom = OGR_G_ForceToMultiPoint( hGeom );
else if( hGeom != NULL
&& eLayerGType == wkbMultiLineString
&& eFeatureGType != eLayerGType )
hGeom = OGR_G_ForceToMultiLineString( hGeom );
#endif /* GDAL/OGR 1.8 or later */
/* -------------------------------------------------------------------- */
/* Consider flattening the geometry to 2D if we want 2D */
/* output. */
/* -------------------------------------------------------------------- */
eLayerGType = OGR_FD_GetGeomType(hLayerDefn);
if( hGeom != NULL )
eFeatureGType = OGR_G_GetGeometryType( hGeom );
if( eLayerGType == wkbFlatten(eLayerGType)
&& hGeom != NULL
&& eFeatureGType != wkbFlatten(eFeatureGType) )
OGR_G_FlattenTo2D( hGeom );
/* -------------------------------------------------------------------- */
/* Create the feature, and attach the geometry. */
/* -------------------------------------------------------------------- */
hFeat = OGR_F_Create( hLayerDefn );
OGR_F_SetGeometryDirectly( hFeat, hGeom );
/* -------------------------------------------------------------------- */
/* Set attributes. */
/* -------------------------------------------------------------------- */
out_field = 0;
for( i = 0; i < item_list->numitems; i++ ) {
gmlItemObj *item = item_list->items + i;
if( !item->visible )
continue;
/* Avoid setting empty strings for numeric fields, so that OGR */
/* doesn't take them as 0. (#4633) */
if( shape->values[i][0] == '\0' ) {
OGRFieldDefnH hFieldDefn = OGR_FD_GetFieldDefn(hLayerDefn, out_field);
OGRFieldType eFieldType = OGR_Fld_GetType(hFieldDefn);
if( eFieldType == OFTInteger || eFieldType == OFTReal )
{
out_field++;
continue;
}
}
OGR_F_SetFieldString( hFeat, out_field++, shape->values[i] );
}
/* -------------------------------------------------------------------- */
/* Write out and cleanup. */
/* -------------------------------------------------------------------- */
eErr = OGR_L_CreateFeature( hOGRLayer, hFeat );
OGR_F_Destroy( hFeat );
if( eErr != OGRERR_NONE ) {
msSetError( MS_OGRERR,
"Attempt to write feature failed (code=%d):\n%s",
"msOGRWriteShape()",
(int) eErr,
CPLGetLastErrorMsg() );
}
if( eErr == OGRERR_NONE )
return MS_SUCCESS;
else
return MS_FAILURE;
}
#endif /* def USE_OGR */
/************************************************************************/
/* msOGRWriteFromQuery() */
/************************************************************************/
int msOGRWriteFromQuery( mapObj *map, outputFormatObj *format, int sendheaders )
{
#ifndef USE_OGR
msSetError(MS_OGRERR, "OGR support is not available.",
"msOGRWriteFromQuery()");
return MS_FAILURE;
#else
/* -------------------------------------------------------------------- */
/* Variable declarations. */
/* -------------------------------------------------------------------- */
OGRSFDriverH hDriver;
OGRDataSourceH hDS;
const char *storage;
const char *fo_filename;
const char *form;
char datasource_name[MS_MAXPATHLEN];
char base_dir[MS_MAXPATHLEN];
char *request_dir = NULL;
char **ds_options = NULL;
char **layer_options = NULL;
char **file_list = NULL;
int iLayer, i;
/* -------------------------------------------------------------------- */
/* Fetch the output format driver. */
/* -------------------------------------------------------------------- */
msOGRInitialize();
hDriver = OGRGetDriverByName( format->driver+4 );
if( hDriver == NULL ) {
msSetError( MS_MISCERR, "No OGR driver named `%s' available.",
"msOGRWriteFromQuery()", format->driver+4 );
return MS_FAILURE;
}
/* -------------------------------------------------------------------- */
/* Capture datasource and layer creation options. */
/* -------------------------------------------------------------------- */
for( i=0; i < format->numformatoptions; i++ ) {
if( strncasecmp(format->formatoptions[i],"LCO:",4) == 0 )
layer_options = CSLAddString( layer_options,
format->formatoptions[i] + 4 );
if( strncasecmp(format->formatoptions[i],"DSCO:",5) == 0 )
ds_options = CSLAddString( ds_options,
format->formatoptions[i] + 5 );
}
/* ==================================================================== */
/* Determine the output datasource name to use. */
/* ==================================================================== */
storage = msGetOutputFormatOption( format, "STORAGE", "filesystem" );
/* -------------------------------------------------------------------- */
/* Where are we putting stuff? */
/* -------------------------------------------------------------------- */
if( EQUAL(storage,"filesystem") ) {
base_dir[0] = '\0' ;
} else if( EQUAL(storage,"memory") ) {
strcpy( base_dir, "/vsimem/ogr_out/" );
} else if( EQUAL(storage,"stream") ) {
/* handled later */
} else {
msSetError( MS_MISCERR,
"STORAGE=%s value not supported.",
"msOGRWriteFromQuery()",
storage );
return MS_FAILURE;
}
/* -------------------------------------------------------------------- */
/* Create a subdirectory to handle this request. */
/* -------------------------------------------------------------------- */
if( !EQUAL(storage,"stream") ) {
if (strlen(base_dir) > 0)
request_dir = msTmpFile(map, NULL, base_dir, "" );
else
request_dir = msTmpFile(map, NULL, NULL, "" );
if( request_dir[strlen(request_dir)-1] == '.' )
request_dir[strlen(request_dir)-1] = '\0';
if( VSIMkdir( request_dir, 0777 ) != 0 ) {
msSetError( MS_MISCERR,
"Attempt to create directory '%s' failed.",
"msOGRWriteFromQuery()",
request_dir );
return MS_FAILURE;
}
} else
/* handled later */;
/* -------------------------------------------------------------------- */
/* Setup the full datasource name. */
/* -------------------------------------------------------------------- */
fo_filename = msGetOutputFormatOption( format, "FILENAME", "result.dat" );
/* Validate that the filename does not contain any directory */
/* information, which might lead to removal of unwanted files. (#4086) */
if( strchr(fo_filename, '/') != NULL || strchr(fo_filename, ':') != NULL ||
strchr(fo_filename, '\\') != NULL ) {
msSetError( MS_MISCERR,
"Invalid value for FILENAME option. "
"It must not contain any directory information.",
"msOGRWriteFromQuery()" );
return MS_FAILURE;
}
if( !EQUAL(storage,"stream") )
msBuildPath( datasource_name, request_dir, fo_filename );
else
strcpy( datasource_name, "/vsistdout/" );
msFree( request_dir );
request_dir = NULL;
/* -------------------------------------------------------------------- */
/* Emit content type headers for stream output now. */
/* -------------------------------------------------------------------- */
if( EQUAL(storage,"stream") ) {
if( sendheaders && format->mimetype ) {
msIO_setHeader("Content-Type",format->mimetype);
msIO_sendHeaders();
} else
msIO_fprintf( stdout, "%c", 10 );
}
/* ==================================================================== */
/* Create the datasource. */
/* ==================================================================== */
hDS = OGR_Dr_CreateDataSource( hDriver, datasource_name, ds_options );
CSLDestroy( ds_options );
if( hDS == NULL ) {
msOGRCleanupDS( datasource_name );
msSetError( MS_MISCERR,
"OGR CreateDataSource failed for '%s' with driver '%s'.",
"msOGRWriteFromQuery()",
datasource_name,
format->driver+4 );
return MS_FAILURE;
}
/* ==================================================================== */
/* Process each layer with a resultset. */
/* ==================================================================== */
for( iLayer = 0; iLayer < map->numlayers; iLayer++ ) {
int status;
layerObj *layer = GET_LAYER(map, iLayer);
shapeObj resultshape;
OGRLayerH hOGRLayer;
OGRwkbGeometryType eGeomType;
OGRSpatialReferenceH srs = NULL;
gmlItemListObj *item_list = NULL;
const char *value;
char *pszWKT;
int reproject = MS_FALSE;
if( !layer->resultcache || layer->resultcache->numresults == 0 )
continue;
/* -------------------------------------------------------------------- */
/* Will we need to reproject? */
/* -------------------------------------------------------------------- */
if(layer->transform == MS_TRUE
&& layer->project
&& msProjectionsDiffer(&(layer->projection),
&(layer->map->projection)) )
reproject = MS_TRUE;
/* -------------------------------------------------------------------- */
/* Establish the geometry type to use for the created layer. */
/* First we consult the wfs_geomtype field and fallback to */
/* deriving something from the type of the mapserver layer. */
/* -------------------------------------------------------------------- */
value = msOWSLookupMetadata(&(layer->metadata), "FOG", "geomtype");
if( value == NULL ) {
if( layer->type == MS_LAYER_POINT )
value = "Point";
else if( layer->type == MS_LAYER_LINE )
value = "LineString";
else if( layer->type == MS_LAYER_POLYGON )
value = "Polygon";
else
value = "Geometry";
}
if( strcasecmp(value,"Point") == 0 )
eGeomType = wkbPoint;
else if( strcasecmp(value,"LineString") == 0 )
eGeomType = wkbLineString;
else if( strcasecmp(value,"Polygon") == 0 )
eGeomType = wkbPolygon;
else if( strcasecmp(value,"MultiPoint") == 0 )
eGeomType = wkbMultiPoint;
else if( strcasecmp(value,"MultiLineString") == 0 )
eGeomType = wkbMultiLineString;
else if( strcasecmp(value,"MultiPolygon") == 0 )
eGeomType = wkbMultiPolygon;
else if( strcasecmp(value,"GeometryCollection") == 0 )
eGeomType = wkbGeometryCollection;
else if( strcasecmp(value,"Point25D") == 0 )
eGeomType = wkbPoint25D;
else if( strcasecmp(value,"LineString25D") == 0 )
eGeomType = wkbLineString25D;
else if( strcasecmp(value,"Polygon25D") == 0 )
eGeomType = wkbPolygon25D;
else if( strcasecmp(value,"MultiPoint25D") == 0 )
eGeomType = wkbMultiPoint25D;
else if( strcasecmp(value,"MultiLineString25D") == 0 )
eGeomType = wkbMultiLineString25D;
else if( strcasecmp(value,"MultiPolygon25D") == 0 )
eGeomType = wkbMultiPolygon25D;
else if( strcasecmp(value,"GeometryCollection25D") == 0 )
eGeomType = wkbGeometryCollection25D;
else if( strcasecmp(value,"Unknown") == 0
|| strcasecmp(value,"Geometry") == 0 )
eGeomType = wkbUnknown;
else if( strcasecmp(value,"None") == 0 )
eGeomType = wkbNone;
else
eGeomType = wkbUnknown;
/* -------------------------------------------------------------------- */
/* Create a spatial reference. */
/* -------------------------------------------------------------------- */
pszWKT = msProjectionObj2OGCWKT( &(map->projection) );
if( pszWKT != NULL ) {
srs = OSRNewSpatialReference( pszWKT );
msFree( pszWKT );
}
/* -------------------------------------------------------------------- */
/* Create the corresponding OGR Layer. */
/* -------------------------------------------------------------------- */
hOGRLayer = OGR_DS_CreateLayer( hDS, layer->name, srs, eGeomType,
layer_options );
if( hOGRLayer == NULL ) {
OGR_DS_Destroy( hDS );
msOGRCleanupDS( datasource_name );
msSetError( MS_MISCERR,
"OGR CreateDataSource failed for '%s' with driver '%s'.",
"msOGRWriteFromQuery()",
datasource_name,
format->driver+4 );
return MS_FAILURE;
}
if( srs != NULL )
OSRDestroySpatialReference( srs );
/* -------------------------------------------------------------------- */
/* Create appropriate attributes on this layer. */
/* -------------------------------------------------------------------- */
item_list = msGMLGetItems( layer, "G" );
assert( item_list->numitems == layer->numitems );
for( i = 0; i < layer->numitems; i++ ) {
OGRFieldDefnH hFldDefn;
OGRErr eErr;
const char *name;
gmlItemObj *item = item_list->items + i;
OGRFieldType eType;
if( !item->visible )
continue;
if( item->alias )
name = item->alias;
else
name = item->name;
if( item->type == NULL )
eType = OFTString;
else if( EQUAL(item->type,"Integer") )
eType = OFTInteger;
else if( EQUAL(item->type,"Real") )
eType = OFTReal;
else if( EQUAL(item->type,"Character") )
eType = OFTString;
else if( EQUAL(item->type,"Date") )
eType = OFTDateTime;
else if( EQUAL(item->type,"Boolean") )
eType = OFTInteger;
else
eType = OFTString;
hFldDefn = OGR_Fld_Create( name, eType );
if( item->width != 0 )
OGR_Fld_SetWidth( hFldDefn, item->width );
if( item->precision != 0 )
OGR_Fld_SetPrecision( hFldDefn, item->precision );
eErr = OGR_L_CreateField( hOGRLayer, hFldDefn, TRUE );
OGR_Fld_Destroy( hFldDefn );
if( eErr != OGRERR_NONE ) {
msSetError( MS_OGRERR,
"Failed to create field '%s' in output feature schema:\n%s",
"msOGRWriteFromQuery()",
layer->items[i],
CPLGetLastErrorMsg() );
OGR_DS_Destroy( hDS );
msOGRCleanupDS( datasource_name );
return MS_FAILURE;
}
}
/* -------------------------------------------------------------------- */
/* Setup joins if needed. This is likely untested. */
/* -------------------------------------------------------------------- */
if(layer->numjoins > 0) {
int j;
for(j=0; j<layer->numjoins; j++) {
status = msJoinConnect(layer, &(layer->joins[j]));
if(status != MS_SUCCESS) {
OGR_DS_Destroy( hDS );
msOGRCleanupDS( datasource_name );
return status;
}
}
}
msInitShape( &resultshape );
/* -------------------------------------------------------------------- */
/* Loop over all the shapes in the resultcache. */
/* -------------------------------------------------------------------- */
for(i=0; i < layer->resultcache->numresults; i++) {
msFreeShape(&resultshape); /* init too */
/*
** Read the shape.
*/
status = msLayerGetShape(layer, &resultshape, &(layer->resultcache->results[i]));
if(status != MS_SUCCESS) {
OGR_DS_Destroy( hDS );
msOGRCleanupDS( datasource_name );
return status;
}
/*
** Perform classification, and some annotation related magic.
*/
resultshape.classindex =
msShapeGetClass(layer, map, &resultshape, NULL, -1);
if( resultshape.classindex >= 0
&& (layer->class[resultshape.classindex]->text.string
|| layer->labelitem)
&& layer->class[resultshape.classindex]->numlabels > 0
&& layer->class[resultshape.classindex]->labels[0]->size != -1 ) {
msShapeGetAnnotation(layer, &resultshape); /* TODO RFC77: check return value */
resultshape.text = msStrdup(layer->class[resultshape.classindex]->labels[0]->annotext);
}
/*
** prepare any necessary JOINs here (one-to-one only)
*/
if( layer->numjoins > 0) {
int j;
for(j=0; j < layer->numjoins; j++) {
if(layer->joins[j].type == MS_JOIN_ONE_TO_ONE) {
msJoinPrepare(&(layer->joins[j]), &resultshape);
msJoinNext(&(layer->joins[j])); /* fetch the first row */
}
}
}
if( reproject ) {
status =
msProjectShape(&layer->projection, &layer->map->projection,
&resultshape);
}
/*
** Write out the feature to OGR.
*/
if( status == MS_SUCCESS )
status = msOGRWriteShape( layer, hOGRLayer, &resultshape,
item_list );
if(status != MS_SUCCESS) {
OGR_DS_Destroy( hDS );
msOGRCleanupDS( datasource_name );
return status;
}
}
msGMLFreeItems(item_list);
msFreeShape(&resultshape); /* init too */
}
/* -------------------------------------------------------------------- */
/* Close the datasource. */
/* -------------------------------------------------------------------- */
OGR_DS_Destroy( hDS );
/* -------------------------------------------------------------------- */
/* Get list of resulting files. */
/* -------------------------------------------------------------------- */
#if !defined(CPL_ZIP_API_OFFERED)
form = msGetOutputFormatOption( format, "FORM", "multipart" );
#else
form = msGetOutputFormatOption( format, "FORM", "zip" );
#endif
if( EQUAL(form,"simple") ) {
file_list = CSLAddString( NULL, datasource_name );
} else {
char datasource_path[MS_MAXPATHLEN];
strcpy( datasource_path, CPLGetPath( datasource_name ) );
file_list = msOGRRecursiveFileList( datasource_path );
}
/* -------------------------------------------------------------------- */
/* If our "storage" is stream then the output has already been */
/* sent back to the client and we don't need to copy it now. */
/* -------------------------------------------------------------------- */
if( EQUAL(storage,"stream") ) {
/* already done */
}
/* -------------------------------------------------------------------- */
/* Handle case of simple file written to stdout. */
/* -------------------------------------------------------------------- */
else if( EQUAL(form,"simple") ) {
char buffer[1024];
int bytes_read;
FILE *fp;
if( sendheaders ) {
msIO_setHeader("Content-Disposition","attachment; filename=%s",
CPLGetFilename( file_list[0] ) );
if( format->mimetype )
msIO_setHeader("Content-Type",format->mimetype);
msIO_sendHeaders();
} else
msIO_fprintf( stdout, "%c", 10 );
fp = VSIFOpenL( file_list[0], "r" );
if( fp == NULL ) {
msSetError( MS_MISCERR,
"Failed to open result file '%s'.",
"msOGRWriteFromQuery()",
file_list[0] );
msOGRCleanupDS( datasource_name );
return MS_FAILURE;
}
while( (bytes_read = VSIFReadL( buffer, 1, sizeof(buffer), fp )) > 0 )
msIO_fwrite( buffer, 1, bytes_read, stdout );
VSIFCloseL( fp );
}
/* -------------------------------------------------------------------- */
/* Handle the case of a multi-part result. */
/* -------------------------------------------------------------------- */
else if( EQUAL(form,"multipart") ) {
static const char *boundary = "xxOGRBoundaryxx";
msIO_setHeader("Content-Type","multipart/mixed; boundary=%s",boundary);
msIO_sendHeaders();
msIO_fprintf(stdout,"--%s\r\n",boundary );
for( i = 0; file_list != NULL && file_list[i] != NULL; i++ ) {
FILE *fp;
int bytes_read;
char buffer[1024];
if( sendheaders )
msIO_fprintf( stdout,
"Content-Disposition: attachment; filename=%s\r\n"
"Content-Type: application/binary\r\n"
"Content-Transfer-Encoding: binary\r\n\r\n",
CPLGetFilename( file_list[i] ));
fp = VSIFOpenL( file_list[i], "r" );
if( fp == NULL ) {
msSetError( MS_MISCERR,
"Failed to open result file '%s'.",
"msOGRWriteFromQuery()",
file_list[0] );
msOGRCleanupDS( datasource_name );
return MS_FAILURE;
}
while( (bytes_read = VSIFReadL( buffer, 1, sizeof(buffer), fp )) > 0 )
msIO_fwrite( buffer, 1, bytes_read, stdout );
VSIFCloseL( fp );
if (file_list[i+1] == NULL)
msIO_fprintf( stdout, "\r\n--%s--\r\n", boundary );
else
msIO_fprintf( stdout, "\r\n--%s\r\n", boundary );
}
}
/* -------------------------------------------------------------------- */
/* Handle the case of a zip file result. */
/* -------------------------------------------------------------------- */
else if( EQUAL(form,"zip") ) {
#if !defined(CPL_ZIP_API_OFFERED)
msSetError( MS_MISCERR, "FORM=zip selected, but CPL ZIP support unavailable, perhaps you need to upgrade to GDAL/OGR 1.8?",
"msOGRWriteFromQuery()");
msOGRCleanupDS( datasource_name );
return MS_FAILURE;
#else