mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-25 00:58:06 -05:00
184 lines
5.9 KiB
Python
184 lines
5.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ogrinfo.py
|
|
---------------------
|
|
Date : November 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Victor Olaya'
|
|
__date__ = 'November 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import string
|
|
import re
|
|
|
|
try:
|
|
from osgeo import ogr
|
|
ogrAvailable = True
|
|
except:
|
|
ogrAvailable = False
|
|
|
|
from PyQt4.QtCore import *
|
|
from PyQt4.QtGui import *
|
|
from qgis.core import *
|
|
|
|
from processing.parameters.ParameterVector import ParameterVector
|
|
from processing.outputs.OutputHTML import OutputHTML
|
|
from OgrAlgorithm import OgrAlgorithm
|
|
|
|
|
|
class OgrInfo(OgrAlgorithm):
|
|
|
|
OUTPUT = 'OUTPUT'
|
|
INPUT_LAYER = 'INPUT_LAYER'
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = 'Information'
|
|
self.group = '[OGR] Miscellaneous'
|
|
|
|
self.addParameter(ParameterVector(self.INPUT_LAYER, 'Input layer',
|
|
[ParameterVector.VECTOR_TYPE_ANY], False))
|
|
|
|
self.addOutput(OutputHTML(self.OUTPUT, 'Layer information'))
|
|
|
|
def commandLineName(self):
|
|
return "gdalogr:vectorinfo"
|
|
|
|
def processAlgorithm(self, progress):
|
|
|
|
input = self.getParameterValue(self.INPUT_LAYER)
|
|
ogrLayer = self.ogrConnectionString(input)
|
|
|
|
output = self.getOutputValue(self.OUTPUT)
|
|
|
|
self.ogrinfo(ogrLayer)
|
|
|
|
f = open(output, 'w')
|
|
f.write('<pre>' + self.info + '</pre>')
|
|
f.close()
|
|
|
|
def out(self, text):
|
|
self.info = self.info + text + '\n'
|
|
|
|
def ogrinfo(self, pszDataSource):
|
|
bVerbose = True
|
|
bSummaryOnly = True
|
|
self.info = ''
|
|
|
|
if not ogrAvailable:
|
|
self.info = 'OGR bindings not installed'
|
|
return
|
|
|
|
qDebug("Opening data source '%s'" % pszDataSource)
|
|
poDS = ogr.Open(pszDataSource, False)
|
|
|
|
if poDS is None:
|
|
self.info = self.failure(pszDataSource)
|
|
return
|
|
|
|
poDriver = poDS.GetDriver()
|
|
|
|
if bVerbose:
|
|
self.out("INFO: Open of `%s'\n using driver `%s' successful."
|
|
% (pszDataSource, poDriver.GetName()))
|
|
|
|
poDS_Name = poDS.GetName()
|
|
if str(type(pszDataSource)) == "<type 'unicode'>" \
|
|
and str(type(poDS_Name)) == "<type 'str'>":
|
|
poDS_Name = unicode(poDS_Name, 'utf8')
|
|
if bVerbose and pszDataSource != poDS_Name:
|
|
self.out("INFO: Internal data source name '%s'\n \
|
|
different from user name '%s'." \
|
|
% (poDS_Name, pszDataSource))
|
|
|
|
# --------------------------------------------------------------------
|
|
# Process each data source layer.
|
|
# --------------------------------------------------------------------
|
|
|
|
for iLayer in range(poDS.GetLayerCount()):
|
|
poLayer = poDS.GetLayer(iLayer)
|
|
|
|
if poLayer is None:
|
|
self.out("FAILURE: Couldn't fetch advertised layer %d!"
|
|
% iLayer)
|
|
return 1
|
|
|
|
self.ReportOnLayer(poLayer)
|
|
|
|
def ReportOnLayer(
|
|
self,
|
|
poLayer,
|
|
pszWHERE=None,
|
|
poSpatialFilter=None,
|
|
):
|
|
bVerbose = True
|
|
|
|
poDefn = poLayer.GetLayerDefn()
|
|
|
|
# --------------------------------------------------------------------
|
|
# Set filters if provided.
|
|
# --------------------------------------------------------------------
|
|
|
|
if pszWHERE is not None:
|
|
if poLayer.SetAttributeFilter(pszWHERE) != 0:
|
|
self.out('FAILURE: SetAttributeFilter(%s) failed.' % pszWHERE)
|
|
return
|
|
|
|
if poSpatialFilter is not None:
|
|
poLayer.SetSpatialFilter(poSpatialFilter)
|
|
|
|
# --------------------------------------------------------------------
|
|
# Report various overall information.
|
|
# --------------------------------------------------------------------
|
|
|
|
self.out('')
|
|
|
|
self.out('Layer name: %s' % poDefn.GetName())
|
|
|
|
if bVerbose:
|
|
self.out('Geometry: %s'
|
|
% ogr.GeometryTypeToName(poDefn.GetGeomType()))
|
|
|
|
self.out('Feature Count: %d' % poLayer.GetFeatureCount())
|
|
|
|
oExt = poLayer.GetExtent(True, can_return_null=True)
|
|
if oExt is not None:
|
|
self.out('Extent: (%f, %f) - (%f, %f)' % (oExt[0], oExt[1],
|
|
oExt[2], oExt[3]))
|
|
|
|
if poLayer.GetSpatialRef() is None:
|
|
pszWKT = '(unknown)'
|
|
else:
|
|
pszWKT = poLayer.GetSpatialRef().ExportToPrettyWkt()
|
|
|
|
self.out('Layer SRS WKT:\n%s' % pszWKT)
|
|
|
|
if len(poLayer.GetFIDColumn()) > 0:
|
|
self.out('FID Column = %s' % poLayer.GetFIDColumn())
|
|
|
|
if len(poLayer.GetGeometryColumn()) > 0:
|
|
self.out('Geometry Column = %s' % poLayer.GetGeometryColumn())
|
|
|
|
for iAttr in range(poDefn.GetFieldCount()):
|
|
poField = poDefn.GetFieldDefn(iAttr)
|
|
|
|
self.out('%s: %s (%d.%d)' % (poField.GetNameRef(),
|
|
poField.GetFieldTypeName(poField.GetType()),
|
|
poField.GetWidth(), poField.GetPrecision()))
|