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ogr_csv.py
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#!/usr/bin/env pytest
# -*- coding: utf-8 -*-
###############################################################################
#
# Project: GDAL/OGR Test Suite
# Purpose: Test OGR CSV driver functionality.
# Author: Frank Warmerdam <warmerdam@pobox.com>
#
###############################################################################
# Copyright (c) 2004, Frank Warmerdam <warmerdam@pobox.com>
# Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
###############################################################################
import json
import math
import pathlib
import sys
# Needed since this script is forked by test_ogr_csv_write_to_stdout() and
# run through regular python3
sys.path.append("../pymod")
import gdaltest
import ogrtest
import pytest
from osgeo import gdal, ogr, osr
pytestmark = pytest.mark.require_driver("CSV")
###############################################################################
@pytest.fixture(autouse=True, scope="module")
def module_disable_exceptions():
with gdaltest.disable_exceptions():
yield
###############################################################################
@pytest.fixture(autouse=True, scope="module")
def startup_and_cleanup():
yield
try:
with gdal.quiet_errors():
ogr.GetDriverByName("CSV").DeleteDataSource("tmp/csvwrk")
except Exception:
pass
try:
with gdal.quiet_errors():
ogr.GetDriverByName("CSV").DeleteDataSource("tmp/ogr_csv_29")
except Exception:
pass
###############################################################################
# Check layer
def ogr_csv_check_layer(lyr, expect_code_as_numeric):
if expect_code_as_numeric is True:
expect = [8901, 8902, 8903, 8904]
else:
expect = ["8901", "8902", "8903", "8904"]
ogrtest.check_features_against_list(lyr, "PRIME_MERIDIAN_CODE", expect)
lyr.ResetReading()
expect = [
"",
"Instituto Geografico e Cadastral; Lisbon",
"Institut Geographique National (IGN), Paris",
'Instituto Geografico "Augustin Cadazzi" (IGAC); Bogota',
]
ogrtest.check_features_against_list(lyr, "INFORMATION_SOURCE", expect)
lyr.ResetReading()
###############################################################################
# Verify the some attributes read properly.
#
def test_ogr_csv_2():
csv_ds = ogr.Open("data/prime_meridian.csv")
with gdal.quiet_errors():
assert csv_ds.CreateLayer("foo") is None
assert csv_ds.DeleteLayer(0) != 0
lyr = csv_ds.GetLayerByName("prime_meridian")
f = ogr.Feature(lyr.GetLayerDefn())
with gdal.quiet_errors():
assert lyr.CreateField(ogr.FieldDefn("foo")) != 0
assert lyr.CreateFeature(f) != 0
ogr_csv_check_layer(lyr, False)
###############################################################################
# Copy layer
def ogr_csv_copy_layer(csv_ds, csv_tmpds, layer_name, options):
#######################################################
# Create layer (.csv file)
if options is None:
new_lyr = csv_tmpds.CreateLayer(layer_name)
else:
new_lyr = csv_tmpds.CreateLayer(layer_name, options=options)
#######################################################
# Setup Schema
ogrtest.quick_create_layer_def(
new_lyr,
[
("PRIME_MERIDIAN_CODE", ogr.OFTInteger),
("INFORMATION_SOURCE", ogr.OFTString),
],
)
#######################################################
# Copy in matching prime meridian fields.
dst_feat = ogr.Feature(feature_def=new_lyr.GetLayerDefn())
srclyr = csv_ds.GetLayerByName("prime_meridian")
srclyr.ResetReading()
feat = srclyr.GetNextFeature()
while feat is not None:
dst_feat.SetFrom(feat)
new_lyr.CreateFeature(dst_feat)
feat = srclyr.GetNextFeature()
return new_lyr
###############################################################################
# Copy prime_meridian.csv to a new subtree under the tmp directory.
@pytest.fixture()
def csvwrk_ds(tmp_path):
src_ds = ogr.Open("data/prime_meridian.csv")
#######################################################
# Create CSV datasource (directory)
csv_tmpds = ogr.GetDriverByName("CSV").CreateDataSource(tmp_path / "csvwrk")
#######################################################
# Create layer (.csv file)
ogr_csv_copy_layer(src_ds, csv_tmpds, "pm1", None)
return csv_tmpds
@pytest.fixture()
def csvwrk(csvwrk_ds):
dirname = csvwrk_ds.GetDescription()
csvwrk_ds.Close()
return pathlib.Path(dirname)
def test_ogr_csv_3(csvwrk_ds):
# Verify the some attributes read properly.
#
# NOTE: one weird thing is that in this pass the prime_meridian_code field
# is typed as integer instead of string since it is created literally.
ogr_csv_check_layer(csvwrk_ds.GetLayer(0), True)
def test_ogr_csv_5(csvwrk):
###############################################################################
# Copy prime_meridian.csv again, in CRLF mode.
csv_ds = ogr.Open("data/prime_meridian.csv")
csv_tmpds = ogr.Open(csvwrk, update=1)
#######################################################
# Create layer (.csv file)
csv_lyr2 = ogr_csv_copy_layer(
csv_ds,
csv_tmpds,
"pm2",
[
"LINEFORMAT=CRLF",
],
)
###############################################################################
# Verify the some attributes read properly.
#
ogr_csv_check_layer(csv_lyr2, True)
###############################################################################
# Delete a layer and verify it seems to have worked properly.
#
csv_tmpds = None
csv_tmpds = ogr.Open(csvwrk, update=1)
idx = 0
while idx < csv_tmpds.GetLayerCount():
lyr = csv_tmpds.GetLayer(idx)
if lyr.GetName() == "pm1":
break
idx += 1
assert lyr.GetName() == "pm1", "unexpected name for first layer"
err = csv_tmpds.DeleteLayer(idx)
assert err == 0, "got error code from DeleteLayer"
assert (
csv_tmpds.GetLayerCount() == 1 and csv_tmpds.GetLayer(0).GetName() == "pm2"
), "Layer not destroyed properly?"
with gdal.quiet_errors():
assert csv_tmpds.DeleteLayer(-1) != 0
assert csv_tmpds.DeleteLayer(csv_tmpds.GetLayerCount()) != 0
###############################################################################
# Reopen and append a record then close.
#
def test_ogr_csv_8(csvwrk):
ds = ogr.Open(csvwrk, update=1)
lyr = ds.GetLayer(0)
feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
feat.SetField("PRIME_MERIDIAN_CODE", "7000")
feat.SetField("INFORMATION_SOURCE", "This is a newline test\n")
lyr.CreateFeature(feat)
###############################################################################
# Verify the some attributes read properly.
#
ds = None
ds = ogr.Open(csvwrk, update=1)
lyr = ds.GetLayer(0)
expect = ["8901", "8902", "8903", "8904", "7000"]
ogrtest.check_features_against_list(lyr, "PRIME_MERIDIAN_CODE", expect)
lyr.ResetReading()
expect = [
"",
"Instituto Geografico e Cadastral; Lisbon",
"Institut Geographique National (IGN), Paris",
'Instituto Geografico "Augustin Cadazzi" (IGAC); Bogota',
"This is a newline test\n",
]
ogrtest.check_features_against_list(lyr, "INFORMATION_SOURCE", expect)
###############################################################################
# Verify some capabilities and related stuff.
#
def test_ogr_csv_10(csvwrk):
csv_ds = ogr.Open("data/prime_meridian.csv")
lyr = csv_ds.GetLayerByName("prime_meridian")
assert not lyr.TestCapability(
"SequentialWrite"
), "should not have write access to readonly layer"
assert not lyr.TestCapability("RandomRead"), (
"CSV files do not efficiently support " "random reading."
)
assert not lyr.TestCapability("FastGetExtent"), "CSV files do not support getextent"
assert not lyr.TestCapability(
"FastFeatureCount"
), "CSV files do not support fast feature count"
assert ogr.GetDriverByName("CSV").TestCapability(
"DeleteDataSource"
), "CSV files do support DeleteDataSource"
assert ogr.GetDriverByName("CSV").TestCapability(
"CreateDataSource"
), "CSV files do support CreateDataSource"
assert not csv_ds.TestCapability(
"CreateLayer"
), "readonly datasource should not CreateLayer"
assert not csv_ds.TestCapability(
"DeleteLayer"
), "should not have deletelayer on readonly ds."
csv_tmpds = ogr.Open(csvwrk, update=1)
lyr = csv_tmpds.GetLayer(0)
assert lyr.TestCapability(
"SequentialWrite"
), "should have write access to updatable layer"
assert csv_tmpds.TestCapability(
"CreateLayer"
), "should have createlayer on updatable ds."
assert csv_tmpds.TestCapability(
"DeleteLayer"
), "should have deletelayer on updatable ds."
###############################################################################
def ogr_csv_check_testcsvt(lyr):
lyr.ResetReading()
expect = [12, None]
ogrtest.check_features_against_list(lyr, "INTCOL", expect)
lyr.ResetReading()
expect = [5.7, None]
ogrtest.check_features_against_list(lyr, "REALCOL", expect)
lyr.ResetReading()
expect = ["foo", ""]
ogrtest.check_features_against_list(lyr, "STRINGCOL", expect)
lyr.ResetReading()
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("DATETIME") == "2008/12/25 11:22:33"
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("DATETIME") == ""
lyr.ResetReading()
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("DATE") == "2008/12/25"
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("DATE") == ""
lyr.ResetReading()
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("TIME") == "11:22:33"
feat = lyr.GetNextFeature()
assert feat.GetFieldAsString("TIME") == ""
assert (
lyr.GetLayerDefn().GetFieldDefn(0).GetWidth() == 5
), "Field 0 : expecting width = 5"
assert (
lyr.GetLayerDefn().GetFieldDefn(1).GetWidth() == 10
), "Field 1 : expecting width = 10"
assert (
lyr.GetLayerDefn().GetFieldDefn(1).GetPrecision() == 7
), "Field 1 : expecting precision = 7"
assert (
lyr.GetLayerDefn().GetFieldDefn(2).GetWidth() == 15
), "Field 2 : expecting width = 15"
assert (
lyr.GetLayerDefn().GetFieldDefn(6).GetType() == ogr.OFTDateTime
), "Field DATETIME : wrong type"
assert (
lyr.GetLayerDefn().GetFieldDefn(7).GetType() == ogr.OFTDate
), "Field DATETIME : wrong type"
assert (
lyr.GetLayerDefn().GetFieldDefn(8).GetType() == ogr.OFTTime
), "Field DATETIME : wrong type"
lyr.ResetReading()
###############################################################################
# Verify handling of csvt with width and precision specified
# Test NULL handling of non string columns too (#2756)
def test_ogr_csv_11():
csv_ds = gdal.OpenEx("data/csv/testcsvt.csv")
assert csv_ds is not None
assert csv_ds.GetFileList() == ["data/csv/testcsvt.csv", "data/csv/testcsvt.csvt"]
lyr = csv_ds.GetLayerByName("testcsvt")
ogr_csv_check_testcsvt(lyr)
###############################################################################
# Verify CREATE_CSVT=YES option
def test_ogr_csv_12(csvwrk):
csv_ds = ogr.Open("data/csv/testcsvt.csv")
srclyr = csv_ds.GetLayerByName("testcsvt")
#######################################################
# Create layer (.csv file)
options = [
"CREATE_CSVT=YES",
]
csv_tmpds = ogr.Open(csvwrk, update=1)
csv_lyr2 = csv_tmpds.CreateLayer("testcsvt_copy", options=options)
#######################################################
# Setup Schema
for i in range(srclyr.GetLayerDefn().GetFieldCount()):
field_defn = srclyr.GetLayerDefn().GetFieldDefn(i)
with gdal.quiet_errors():
csv_lyr2.CreateField(field_defn)
#######################################################
# Recopy source layer into destination layer
dst_feat = ogr.Feature(feature_def=csv_lyr2.GetLayerDefn())
srclyr.ResetReading()
feat = srclyr.GetNextFeature()
while feat is not None:
dst_feat.SetFrom(feat)
csv_lyr2.CreateFeature(dst_feat)
feat = srclyr.GetNextFeature()
with gdal.quiet_errors():
assert csv_tmpds.CreateLayer("testcsvt_copy") is None
#######################################################
# Closes everything and reopen
csv_tmpds = None
csv_ds = None
csv_ds = ogr.Open(csvwrk / "testcsvt_copy.csv")
#######################################################
# Checks copy
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testcsvt_copy")
ogr_csv_check_testcsvt(lyr)
###############################################################################
# Verify GEOMETRY=AS_WKT,AS_XY,AS_XYZ,AS_YX options
def test_ogr_csv_13(csvwrk):
csv_tmpds = ogr.Open(csvwrk, update=1)
# AS_WKT
options = ["GEOMETRY=AS_WKT", "CREATE_CSVT=YES"]
lyr = csv_tmpds.CreateLayer("as_wkt", options=options)
field_defn = ogr.FieldDefn("ADATA", ogr.OFTString)
lyr.CreateField(field_defn)
# Some applications expect the WKT column not to be exposed. Check it
assert lyr.GetLayerDefn().GetFieldCount() == 1
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("POINT(1 2)"))
dst_feat.SetField("ADATA", "avalue")
lyr.CreateFeature(dst_feat)
# AS_WKT but no field
options = ["GEOMETRY=AS_WKT", "CREATE_CSVT=YES"]
lyr = csv_tmpds.CreateLayer("as_wkt_no_field", options=options)
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("POINT(1 2)"))
lyr.CreateFeature(dst_feat)
# AS_XY
options = ["GEOMETRY=AS_XY", "CREATE_CSVT=YES"]
lyr = csv_tmpds.CreateLayer("as_xy", options=options)
field_defn = ogr.FieldDefn("ADATA", ogr.OFTString)
lyr.CreateField(field_defn)
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("POINT(1 2)"))
dst_feat.SetField("ADATA", "avalue")
lyr.CreateFeature(dst_feat)
# Nothing will be written in the x or y field
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("LINESTRING(1 2,3 4)"))
dst_feat.SetField("ADATA", "avalue")
lyr.CreateFeature(dst_feat)
# AS_YX
options = ["GEOMETRY=AS_YX", "CREATE_CSVT=YES"]
lyr = csv_tmpds.CreateLayer("as_yx", options=options)
field_defn = ogr.FieldDefn("ADATA", ogr.OFTString)
lyr.CreateField(field_defn)
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("POINT(1 2)"))
dst_feat.SetField("ADATA", "avalue")
lyr.CreateFeature(dst_feat)
# AS_XYZ
options = ["GEOMETRY=AS_XYZ", "CREATE_CSVT=YES"]
lyr = csv_tmpds.CreateLayer("as_xyz", options=options)
field_defn = ogr.FieldDefn("ADATA", ogr.OFTString)
lyr.CreateField(field_defn)
dst_feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
dst_feat.SetGeometry(ogr.CreateGeometryFromWkt("POINT(1 2 3)"))
dst_feat.SetField("ADATA", "avalue")
lyr.CreateFeature(dst_feat)
#######################################################
# Closes everything and reopen
csv_tmpds = None
csv_tmpds = ogr.Open(csvwrk)
# Test AS_WKT
lyr = csv_tmpds.GetLayerByName("as_wkt")
expect = ["POINT (1 2)"]
ogrtest.check_features_against_list(lyr, "WKT", expect)
lyr.ResetReading()
expect = ["avalue"]
ogrtest.check_features_against_list(lyr, "ADATA", expect)
# Test as_wkt_no_field
lyr = csv_tmpds.GetLayerByName("as_wkt_no_field")
expect = ["POINT (1 2)"]
ogrtest.check_features_against_list(lyr, "WKT", expect)
# Test AS_XY
lyr = csv_tmpds.GetLayerByName("as_xy")
assert lyr.GetLayerDefn().GetFieldDefn(0).GetName() == "X"
expect = [1, None]
ogrtest.check_features_against_list(lyr, "X", expect)
lyr.ResetReading()
expect = [2, None]
ogrtest.check_features_against_list(lyr, "Y", expect)
lyr.ResetReading()
expect = ["avalue", "avalue"]
ogrtest.check_features_against_list(lyr, "ADATA", expect)
# Test AS_YX
lyr = csv_tmpds.GetLayerByName("as_yx")
assert lyr.GetLayerDefn().GetFieldDefn(0).GetName() == "Y"
expect = [1]
ogrtest.check_features_against_list(lyr, "X", expect)
lyr.ResetReading()
expect = [2]
ogrtest.check_features_against_list(lyr, "Y", expect)
# Test AS_XYZ
lyr = csv_tmpds.GetLayerByName("as_xyz")
assert lyr.GetLayerDefn().GetFieldDefn(0).GetName() == "X"
expect = [1]
ogrtest.check_features_against_list(lyr, "X", expect)
lyr.ResetReading()
expect = [2]
ogrtest.check_features_against_list(lyr, "Y", expect)
lyr.ResetReading()
expect = [3]
ogrtest.check_features_against_list(lyr, "Z", expect)
###############################################################################
# Copy prime_meridian.csv again, with SEMICOLON as separator
def test_ogr_csv_14(csvwrk):
csv_tmpds = ogr.Open(csvwrk, update=1)
csv_ds = ogr.Open("data/prime_meridian.csv")
#######################################################
# Create layer (.csv file)
csv_lyr1 = ogr_csv_copy_layer(
csv_ds,
csv_tmpds,
"pm3",
[
"SEPARATOR=SEMICOLON",
],
)
ogr_csv_check_layer(csv_lyr1, True)
###############################################################################
# Close the file and check again
#
ds = None
ds = ogr.Open(csvwrk)
csv_lyr1 = ds.GetLayerByName("pm3")
ogr_csv_check_layer(csv_lyr1, False)
###############################################################################
# Verify that WKT field treated as geometry.
#
def test_ogr_csv_17():
csv_ds = ogr.Open("data/wkt.csv")
csv_lyr = csv_ds.GetLayer(0)
assert (
csv_lyr.GetLayerDefn().GetGeomType() == ogr.wkbUnknown
), "did not get wktUnknown for geometry type."
feat = csv_lyr.GetNextFeature()
assert (
feat.GetField("WKT")
== "POLYGON((6.25 1.25,7.25 1.25,7.25 2.25,6.25 2.25,6.25 1.25))"
), "feature 1: expected wkt value"
ogrtest.check_feature_geometry(
feat, "POLYGON((6.25 1.25,7.25 1.25,7.25 2.25,6.25 2.25,6.25 1.25))"
)
feat = csv_lyr.GetNextFeature()
feat = csv_lyr.GetNextFeature()
ogrtest.check_feature_geometry(
feat, "POLYGON((1.001 1.001,3.999 3.999,3.2 1.6,1.001 1.001))"
)
###############################################################################
# Write to /vsistdout/
def test_ogr_csv_write_to_stdout():
if gdaltest.is_travis_branch("sanitize"):
pytest.skip("fails on sanitize for unknown reason")
python_exe = sys.executable
if sys.platform == "win32":
python_exe = python_exe.replace("\\", "/")
ret = gdaltest.runexternal(python_exe + " ogr_csv.py ogr_csv_write_to_stdout")
assert (
ret.replace("\r\n", "\n")
== """my_geom,foo,bar
"POINT (0 1)",bar,baz
"""
)
def ogr_csv_write_to_stdout():
ds = ogr.GetDriverByName("CSV").CreateDataSource("/vsistdout/")
srs = osr.SpatialReference()
srs.ImportFromEPSG(4326)
lyr = ds.CreateLayer(
"foo", srs=srs, options=["GEOMETRY=AS_WKT", "GEOMETRY_NAME=my_geom"]
)
lyr.CreateField(ogr.FieldDefn("foo"))
lyr.CreateField(ogr.FieldDefn("bar"))
feat = ogr.Feature(feature_def=lyr.GetLayerDefn())
feat.SetField("foo", "bar")
feat.SetField("bar", "baz")
geom = ogr.CreateGeometryFromWkt("POINT(0 1)")
feat.SetGeometry(geom)
lyr.CreateFeature(feat)
###############################################################################
# Verify handling of non-numeric values in numeric columns
def test_ogr_csv_19():
csv_ds = ogr.Open("data/csv/testnull.csv")
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testnull")
lyr.ResetReading()
with gdal.quiet_errors():
ogrtest.check_features_against_list(lyr, "INTCOL", [12])
lyr.ResetReading()
ogrtest.check_features_against_list(lyr, "REALCOL", [5.7])
lyr.ResetReading()
ogrtest.check_features_against_list(lyr, "INTCOL2", [None])
lyr.ResetReading()
ogrtest.check_features_against_list(lyr, "REALCOL2", [None])
lyr.ResetReading()
ogrtest.check_features_against_list(lyr, "STRINGCOL", ["foo"])
###############################################################################
# Verify handling of column names with numbers
def test_ogr_csv_20():
csv_ds = ogr.Open("data/csv/testnumheader1.csv")
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testnumheader1")
assert lyr is not None
lyr.ResetReading()
expect = ["1 - 2", "2-3"]
got = [
lyr.GetLayerDefn().GetFieldDefn(0).GetNameRef(),
lyr.GetLayerDefn().GetFieldDefn(1).GetNameRef(),
]
assert got[0] == expect[0], "column 0 got name %s expected %s" % (
str(got[0]),
str(expect[0]),
)
assert got[1] == expect[1], "column 1 got name %s expected %s" % (
str(got[1]),
str(expect[1]),
)
csv_ds = ogr.Open("data/csv/testnumheader2.csv")
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testnumheader2")
assert lyr is not None
lyr.ResetReading()
expect = ["field_1", "field_2"]
got = [
lyr.GetLayerDefn().GetFieldDefn(0).GetNameRef(),
lyr.GetLayerDefn().GetFieldDefn(1).GetNameRef(),
]
assert got[0] == expect[0], "column 0 got name %s expected %s" % (
str(got[0]),
str(expect[0]),
)
assert got[1] == expect[1], "column 1 got name %s expected %s" % (
str(got[1]),
str(expect[1]),
)
###############################################################################
# Verify handling of numeric column names with quotes (bug #4361)
def test_ogr_csv_21():
csv_ds = ogr.Open("data/csv/testquoteheader1.csv")
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testquoteheader1")
assert lyr is not None
lyr.ResetReading()
expect = ["test", "2000", "2000.12"]
for i in range(0, 3):
got = lyr.GetLayerDefn().GetFieldDefn(i).GetNameRef()
assert got == expect[i], "column %d got name %s expected %s" % (
i,
str(got),
str(expect[i]),
)
csv_ds = ogr.Open("data/csv/testquoteheader2.csv")
assert csv_ds is not None
lyr = csv_ds.GetLayerByName("testquoteheader2")
assert lyr is not None
lyr.ResetReading()
expect = ["field_1", "field_2", "field_3"]
for i in range(0, 3):
got = lyr.GetLayerDefn().GetFieldDefn(i).GetNameRef()
assert got == expect[i], "column %d got name %s expected %s" % (
i,
str(got),
str(expect[i]),
)
###############################################################################
# Test handling of UTF8 BOM (bug #4623)
def test_ogr_csv_22():
ds = ogr.Open("data/csv/csv_with_utf8_bom.csv")
lyr = ds.GetLayer(0)
fld0_name = lyr.GetLayerDefn().GetFieldDefn(0).GetNameRef()
assert fld0_name == "id", "bad field name"
def test_ogr_csv_23(csvwrk):
# create a CSV file with UTF8 BOM
ds = ogr.Open(csvwrk, update=1)
lyr = ds.CreateLayer("utf8", options=["WRITE_BOM=YES", "GEOMETRY=AS_WKT"])
lyr.CreateField(ogr.FieldDefn("foo", ogr.OFTInteger))
lyr.CreateField(ogr.FieldDefn("bar", ogr.OFTString))
feat = ogr.Feature(lyr.GetLayerDefn())
feat.SetField("foo", 123)
feat.SetField("bar", "baz")
geom = ogr.CreateGeometryFromWkt("POINT(0 1)")
feat.SetGeometry(geom)
lyr.CreateFeature(feat)
feat = None
lyr = None
ds = None
data = open(csvwrk / "utf8.csv", "rb").read()
assert data[:6] == b"\xef\xbb\xbfWKT", "No UTF8 BOM header on output"
# create a CSV file without UTF8 BOM
ds = ogr.Open(csvwrk, update=1)
lyr = ds.CreateLayer("utf8no", options=["WRITE_BOM=YES", "GEOMETRY=AS_WKT"])
lyr.CreateField(ogr.FieldDefn("foo", ogr.OFTInteger))
lyr.CreateField(ogr.FieldDefn("bar", ogr.OFTString))
feat = ogr.Feature(lyr.GetLayerDefn())
feat.SetField("foo", 123)
feat.SetField("bar", "baz")
geom = ogr.CreateGeometryFromWkt("POINT(0 1)")
feat.SetGeometry(geom)
lyr.CreateFeature(feat)
feat = None
lyr = None
ds = None
data = open(csvwrk / "utf8no.csv", "rb").read()
assert data[:3] != "\xef\xbb\xbfWKT", "Found UTF8 BOM header on output!"
###############################################################################
# Test single column CSV files
def test_ogr_csv_24(tmp_vsimem):
# Create an invalid CSV file
f = gdal.VSIFOpenL(tmp_vsimem / "invalid.csv", "wb")
gdal.VSIFCloseL(f)
# and check that it doesn't prevent from creating a new CSV file (#4824)
ds = ogr.GetDriverByName("CSV").CreateDataSource(tmp_vsimem / "single.csv")
lyr = ds.CreateLayer("single")
lyr.CreateField(ogr.FieldDefn("foo", ogr.OFTString))
feat = ogr.Feature(lyr.GetLayerDefn())
lyr.CreateFeature(feat)
feat = ogr.Feature(lyr.GetLayerDefn())
feat.SetField(0, "bar")
lyr.CreateFeature(feat)
feat = None
lyr = None
ds = None
ds = ogr.Open(tmp_vsimem / "single.csv")
lyr = ds.GetLayer(0)
assert lyr.GetLayerDefn().GetFieldCount() == 1
feat = lyr.GetNextFeature()
assert feat.GetField(0) == ""
feat = lyr.GetNextFeature()
assert feat.GetField(0) == "bar"
ds = None
###############################################################################
# Test newline handling (#4452)
def test_ogr_csv_25(csvwrk):
ds = ogr.Open(csvwrk, update=1)
lyr = ds.CreateLayer(
"newlines", options=["LINEFORMAT=LF"]
) # just in case tests are run on windows...
lyr.CreateField(ogr.FieldDefn("foo", ogr.OFTString))
feat = ogr.Feature(lyr.GetLayerDefn())
feat.SetField("foo", "windows newline:\r\nlinux newline:\nend of string:")
lyr.CreateFeature(feat)
feat = None
lyr = None
ds = None
EXPECTED = 'foo\n"windows newline:\r\nlinux newline:\nend of string:"\n'
data = open(csvwrk / "newlines.csv", "rb").read().decode("ascii")
assert data == EXPECTED, "Newlines changed:\n\texpected=%s\n\tgot= %s" % (
repr(EXPECTED),
repr(data),
)
###############################################################################
# Test number padding behaviour (#4469)
def test_ogr_csv_26(csvwrk):
ds = ogr.Open(csvwrk, update=1)
lyr = ds.CreateLayer(
"num_padding", options=["LINEFORMAT=LF"]
) # just in case tests are run on windows...
field = ogr.FieldDefn("foo", ogr.OFTReal)
field.SetWidth(50)
field.SetPrecision(25)
lyr.CreateField(field)
feature = ogr.Feature(lyr.GetLayerDefn())
feature.SetField("foo", 10.5)
feat = ogr.Feature(lyr.GetLayerDefn())
feat.SetField("foo", 10.5)
lyr.CreateFeature(feat)
feat = None
lyr = None
ds = None