#!/usr/bin/env python
# -*- coding: utf-8 -*-
###############################################################################
# $Id: ogr_rfc35_shape.py 28394 2015-01-31 09:23:41Z rouault $
#
# Project:  GDAL/OGR Test Suite
# Purpose:  Test RFC35 for shape driver
# Author:   Even Rouault <even dot rouault at mines dash paris dot org>
#
###############################################################################
# Copyright (c) 2011-2013, Even Rouault <even dot rouault at mines-paris dot org>
#
# 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.
###############################################################################

import sys

sys.path.append( '../pymod' )

import gdaltest
from osgeo import ogr
from osgeo import gdal

###############################################################################
#
def CheckFileSize(src_filename):

    import test_py_scripts
    script_path = test_py_scripts.get_py_script('ogr2ogr')
    if script_path is None:
        return 'skip'

    test_py_scripts.run_py_script(script_path, 'ogr2ogr', '/vsimem/CheckFileSize.dbf ' + src_filename)
    statBufSrc = gdal.VSIStatL(src_filename, gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
    statBufDst = gdal.VSIStatL('/vsimem/CheckFileSize.dbf', gdal.VSI_STAT_EXISTS_FLAG | gdal.VSI_STAT_NATURE_FLAG | gdal.VSI_STAT_SIZE_FLAG)
    ogr.GetDriverByName('ESRI Shapefile').DeleteDataSource('/vsimem/CheckFileSize.dbf')

    if statBufSrc.size != statBufDst.size:
        print('src_size = %d, dst_size = %d', statBufSrc.size, statBufDst.size)
        return 'fail'

    return 'success'

###############################################################################
# Initiate the test file

def ogr_rfc35_shape_1():

    ds = ogr.GetDriverByName('ESRI Shapefile').CreateDataSource('/vsimem/rfc35_test.dbf')
    lyr = ds.CreateLayer('rfc35_test')

    lyr.ReorderFields([])

    fd = ogr.FieldDefn('foo5', ogr.OFTString)
    fd.SetWidth(5)
    lyr.CreateField(fd)

    feat = ogr.Feature(lyr.GetLayerDefn())
    feat.SetField(0, 'foo0')
    lyr.CreateFeature(feat)
    feat = None

    fd = ogr.FieldDefn('bar10', ogr.OFTString)
    fd.SetWidth(10)
    lyr.CreateField(fd)

    feat = ogr.Feature(lyr.GetLayerDefn())
    feat.SetField(0, 'foo1')
    feat.SetField(1, 'bar1')
    lyr.CreateFeature(feat)
    feat = None

    fd = ogr.FieldDefn('baz15', ogr.OFTString)
    fd.SetWidth(15)
    lyr.CreateField(fd)

    feat = ogr.Feature(lyr.GetLayerDefn())
    feat.SetField(0, 'foo2')
    feat.SetField(1, 'bar2_01234')
    feat.SetField(2, 'baz2_0123456789')
    lyr.CreateFeature(feat)
    feat = None

    fd = ogr.FieldDefn('baw20', ogr.OFTString)
    fd.SetWidth(20)
    lyr.CreateField(fd)

    return 'success'

###############################################################################
# Test ReorderField()

def Truncate(val, lyr_defn, fieldname):
    if val is None:
        return val

    return val[0:lyr_defn.GetFieldDefn(lyr_defn.GetFieldIndex(fieldname)).GetWidth()]

def CheckFeatures(lyr, foo = 'foo5', bar = 'bar10', baz = 'baz15', baw = 'baw20'):

    expected_values = [
        [ 'foo0', None, None, None ],
        [ 'foo1', 'bar1', None, None ],
        [ 'foo2', 'bar2_01234', 'baz2_0123456789', None ],
        [ 'foo3', 'bar3_01234', 'baz3_0123456789', 'baw3_012345678901234' ]
    ]

    lyr_defn = lyr.GetLayerDefn()

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    i = 0
    while feat is not None:
        if (foo is not None and feat.GetField(foo) != Truncate(expected_values[i][0], lyr_defn, foo)) or \
           (bar is not None and feat.GetField(bar) != Truncate(expected_values[i][1], lyr_defn, bar)) or \
           (baz is not None and feat.GetField(baz) != Truncate(expected_values[i][2], lyr_defn, baz)) or \
           (baw is not None and feat.GetField(baw) != Truncate(expected_values[i][3], lyr_defn, baw)):
               feat.DumpReadable()
               return 'fail'
        feat = lyr.GetNextFeature()
        i = i + 1

    return 'success'

def CheckColumnOrder(lyr, expected_order):

    lyr_defn = lyr.GetLayerDefn()
    for i in range(len(expected_order)):
        if lyr_defn.GetFieldDefn(i).GetName() != expected_order[i]:
            return 'fail'

    return 'success'

def Check(lyr, expected_order):

    ret = CheckColumnOrder(lyr, expected_order)
    if ret != 'success':
        return ret

    ret = CheckFeatures(lyr)
    if ret != 'success':
        return ret

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr_reopen = ds.GetLayer(0)

    ret = CheckColumnOrder(lyr_reopen, expected_order)
    if ret != 'success':
        return ret

    ret = CheckFeatures(lyr_reopen)
    if ret != 'success':
        return ret

    return 'success'

def ogr_rfc35_shape_2():

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)

    if lyr.TestCapability(ogr.OLCReorderFields) != 1:
        return 'fail'

    feat = ogr.Feature(lyr.GetLayerDefn())
    feat.SetField(0, 'foo3')
    feat.SetField(1, 'bar3_01234')
    feat.SetField(2, 'baz3_0123456789')
    feat.SetField(3, 'baw3_012345678901234')
    lyr.CreateFeature(feat)
    feat = None

    if lyr.ReorderField(1,3) != 0:
        return 'fail'
    ret = Check(lyr, ['foo5', 'baz15', 'baw20', 'bar10'])
    if ret != 'success':
        return ret

    lyr.ReorderField(3,1)
    ret = Check(lyr, ['foo5', 'bar10', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    lyr.ReorderField(0,2)
    ret = Check(lyr, ['bar10', 'baz15', 'foo5', 'baw20'])
    if ret != 'success':
        return ret

    lyr.ReorderField(2,0)
    ret = Check(lyr, ['foo5', 'bar10', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    lyr.ReorderField(0,1)
    ret = Check(lyr, ['bar10', 'foo5', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    lyr.ReorderField(1,0)
    ret = Check(lyr, ['foo5', 'bar10', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    lyr.ReorderFields([3,2,1,0])
    ret = Check(lyr, ['baw20', 'baz15', 'bar10', 'foo5'])
    if ret != 'success':
        return ret

    lyr.ReorderFields([3,2,1,0])
    ret = Check(lyr, ['foo5', 'bar10', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ret = lyr.ReorderFields([0,0,0,0])
    gdal.PopErrorHandler()
    if ret == 0:
        return 'fail'

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)

    ret = CheckColumnOrder(lyr, ['foo5', 'bar10', 'baz15', 'baw20'])
    if ret != 'success':
        return ret

    ret = CheckFeatures(lyr)
    if ret != 'success':
        return ret

    return 'success'

###############################################################################
# Test AlterFieldDefn() for change of name and width

def ogr_rfc35_shape_3():

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)

    fd = ogr.FieldDefn("baz25", ogr.OFTString)
    fd.SetWidth(25)

    lyr_defn = lyr.GetLayerDefn()

    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ret = lyr.AlterFieldDefn(-1, fd, ogr.ALTER_ALL_FLAG)
    gdal.PopErrorHandler()
    if ret == 0:
        return 'fail'

    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ret = lyr.AlterFieldDefn(lyr_defn.GetFieldCount(), fd, ogr.ALTER_ALL_FLAG)
    gdal.PopErrorHandler()
    if ret == 0:
        return 'fail'

    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("baz15"), fd, ogr.ALTER_ALL_FLAG)

    ret = CheckFeatures(lyr, baz = 'baz25')
    if ret != 'success':
        return ret

    fd = ogr.FieldDefn("baz5", ogr.OFTString)
    fd.SetWidth(5)

    lyr_defn = lyr.GetLayerDefn()
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("baz25"), fd, ogr.ALTER_ALL_FLAG)

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()
    fld_defn = lyr_defn.GetFieldDefn(lyr_defn.GetFieldIndex('baz5'))
    if fld_defn.GetWidth() != 5:
        return 'fail'

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    return 'success'

###############################################################################
# Test AlterFieldDefn() for change of type

def ogr_rfc35_shape_4():

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    if lyr.TestCapability(ogr.OLCAlterFieldDefn) != 1:
        return 'fail'

    fd = ogr.FieldDefn("intfield", ogr.OFTInteger)
    lyr.CreateField(fd)

    lyr.ReorderField(lyr_defn.GetFieldIndex("intfield"), 0)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    feat.SetField("intfield", 12345)
    lyr.SetFeature(feat)
    feat = None

    fd.SetWidth(10)
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("intfield"), fd, ogr.ALTER_ALL_FLAG)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("intfield") != 12345:
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    fd.SetWidth(5)
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("intfield"), fd, ogr.ALTER_ALL_FLAG)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("intfield") != 12345:
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    fd.SetWidth(4)
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("intfield"), fd, ogr.ALTER_ALL_FLAG)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("intfield") != 1234:
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    ds = None

    # Check that the file size has decreased after column shrinking
    ret = CheckFileSize('/vsimem/rfc35_test.dbf')
    if ret == 'fail':
        return ret

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    fd = ogr.FieldDefn("oldintfld", ogr.OFTString)
    fd.SetWidth(15)
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("intfield"), fd, ogr.ALTER_ALL_FLAG)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("oldintfld") != '1234':
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("oldintfld") != '1234':
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    lyr.DeleteField(lyr_defn.GetFieldIndex("oldintfld"))

    fd = ogr.FieldDefn("intfield", ogr.OFTInteger)
    fd.SetWidth(10)
    if lyr.CreateField(fd) != 0:
        return 'fail'

    if lyr.ReorderField(lyr_defn.GetFieldIndex("intfield"), 0) != 0:
        return 'fail'

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    feat.SetField("intfield", 98765)
    if lyr.SetFeature(feat) != 0:
        return 'fail'
    feat = None

    fd = ogr.FieldDefn("oldintfld", ogr.OFTString)
    fd.SetWidth(6)
    lyr.AlterFieldDefn(lyr_defn.GetFieldIndex("intfield"), fd, ogr.ALTER_ALL_FLAG)

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("oldintfld") != '98765':
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    lyr.ResetReading()
    feat = lyr.GetNextFeature()
    if feat.GetField("oldintfld") != '98765':
        return 'fail'
    feat = None

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    return 'success'

###############################################################################
# Test DeleteField()

def ogr_rfc35_shape_5():

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    if lyr.TestCapability(ogr.OLCDeleteField) != 1:
        return 'fail'

    if lyr.DeleteField(0) != 0:
        return 'fail'

    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ret = lyr.DeleteField(-1)
    gdal.PopErrorHandler()
    if ret == 0:
        return 'fail'

    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ret = lyr.DeleteField(lyr.GetLayerDefn().GetFieldCount())
    gdal.PopErrorHandler()
    if ret == 0:
        return 'fail'

    ret = CheckFeatures(lyr, baz = 'baz5')
    if ret != 'success':
        return ret

    if lyr.DeleteField(lyr_defn.GetFieldIndex('baw20')) != 0:
        return 'fail'

    ds = None

    # Check that the file size has decreased after column removing
    ret = CheckFileSize('/vsimem/rfc35_test.dbf')
    if ret == 'fail':
        return ret

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    ret = CheckFeatures(lyr, baz = 'baz5', baw = None)
    if ret != 'success':
        return ret

    if lyr.DeleteField(lyr_defn.GetFieldIndex('baz5')) != 0:
        return 'fail'

    ret = CheckFeatures(lyr, baz = None, baw = None)
    if ret != 'success':
        return ret

    if lyr.DeleteField(lyr_defn.GetFieldIndex('foo5')) != 0:
        return 'fail'

    if lyr.DeleteField(lyr_defn.GetFieldIndex('bar10')) != 0:
        return 'fail'

    ret = CheckFeatures(lyr, foo = None, bar = None, baz = None, baw = None)
    if ret != 'success':
        return ret

    ds = None

    ds = ogr.Open('/vsimem/rfc35_test.dbf', update = 1)
    lyr = ds.GetLayer(0)
    lyr_defn = lyr.GetLayerDefn()

    ret = CheckFeatures(lyr, foo = None, bar = None, baz = None, baw = None)
    if ret != 'success':
        return ret

    return 'success'

###############################################################################
# Initiate the test file

def ogr_rfc35_shape_cleanup():

    ogr.GetDriverByName('ESRI Shapefile').DeleteDataSource('/vsimem/rfc35_test.dbf')

    return 'success'

gdaltest_list = [
    ogr_rfc35_shape_1,
    ogr_rfc35_shape_2,
    ogr_rfc35_shape_3,
    ogr_rfc35_shape_4,
    ogr_rfc35_shape_5,
    ogr_rfc35_shape_cleanup ]


if __name__ == '__main__':

    gdaltest.setup_run( 'ogr_rfc35_shape' )

    gdaltest.run_tests( gdaltest_list )

    gdaltest.summarize()

