238 строки
8.3 KiB
Python
Исполняемый файл
238 строки
8.3 KiB
Python
Исполняемый файл
#!/usr/bin/env pytest
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###############################################################################
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# $Id$
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#
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# Project: GDAL/OGR Test Suite
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# Purpose: Test /vsistdin/
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# Author: Even Rouault <even dot rouault at spatialys.com>
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#
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###############################################################################
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# Copyright (c) 2012, Even Rouault <even dot rouault at spatialys.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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###############################################################################
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import os
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import gdaltest
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import pytest
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import test_cli_utilities
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from osgeo import gdal
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###############################################################################
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# Test on a small file
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def test_vsistdin_1():
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if test_cli_utilities.get_gdal_translate_path() is None:
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pytest.skip()
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src_ds = gdal.Open("data/byte.tif")
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ds = gdal.GetDriverByName("GTiff").CreateCopy("tmp/vsistdin_1_src.tif", src_ds)
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ds = None
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cs = src_ds.GetRasterBand(1).Checksum()
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src_ds = None
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# Should work on both Unix and Windows
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os.system(
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test_cli_utilities.get_gdal_translate_path()
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+ " /vsistdin/ tmp/vsistdin_1_out.tif -q < tmp/vsistdin_1_src.tif"
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)
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gdal.Unlink("tmp/vsistdin_1_src.tif")
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ds = gdal.Open("tmp/vsistdin_1_out.tif")
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assert ds is not None
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assert ds.GetRasterBand(1).Checksum() == cs
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ds = None
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gdal.Unlink("tmp/vsistdin_1_out.tif")
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###############################################################################
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# Test on a bigger file (> 1 MB)
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def test_vsistdin_2():
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if test_cli_utilities.get_gdal_translate_path() is None:
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pytest.skip()
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ds = gdal.GetDriverByName("GTiff").Create("tmp/vsistdin_2_src.tif", 2048, 2048)
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ds = None
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# Should work on both Unix and Windows
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os.system(
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test_cli_utilities.get_gdal_translate_path()
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+ " /vsistdin/ tmp/vsistdin_2_out.tif -q < tmp/vsistdin_2_src.tif"
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)
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gdal.Unlink("tmp/vsistdin_2_src.tif")
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ds = gdal.Open("tmp/vsistdin_2_out.tif")
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assert ds is not None
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ds = None
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gdal.Unlink("tmp/vsistdin_2_out.tif")
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###############################################################################
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# Test opening /vsistdin/ in write mode (failure expected)
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@gdaltest.disable_exceptions()
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def test_vsistdin_3():
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with gdaltest.error_handler():
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f = gdal.VSIFOpenL("/vsistdin/", "wb")
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assert f is None
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###############################################################################
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# Test fix for #6061
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def test_vsistdin_4():
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if test_cli_utilities.get_gdal_translate_path() is None:
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pytest.skip()
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f = open("tmp/vsistdin_4_src.vrt", "wt")
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f.write(
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"""<VRTDataset rasterXSize="20" rasterYSize="20">
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%s
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<SRS>PROJCS["NAD27 / UTM zone 11N",GEOGCS["NAD27",DATUM["North_American_Datum_1927",SPHEROID["Clarke 1866",6378206.4,294.9786982138982,AUTHORITY["EPSG","7008"]],AUTHORITY["EPSG","6267"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4267"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-117],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","26711"]]</SRS>
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<GeoTransform> 4.4072000000000000e+05, 6.0000000000000000e+01, 0.0000000000000000e+00, 3.7513200000000000e+06, 0.0000000000000000e+00, -6.0000000000000000e+01</GeoTransform>
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<VRTRasterBand dataType="Byte" band="1">
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<ColorInterp>Gray</ColorInterp>
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<SimpleSource>
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<SourceFilename relativeToVRT="0">data/byte.tif</SourceFilename>
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<SourceBand>1</SourceBand>
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</SimpleSource>
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</VRTRasterBand>
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</VRTDataset>"""
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% (" " * (2 * 1024 * 1024))
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)
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f.close()
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# Should work on both Unix and Windows
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os.system(
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test_cli_utilities.get_gdal_translate_path()
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+ " /vsistdin/ tmp/vsistdin_4_out.tif -q < tmp/vsistdin_4_src.vrt"
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)
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gdal.Unlink("tmp/vsistdin_4_src.vrt")
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ds = gdal.Open("tmp/vsistdin_4_out.tif")
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assert ds is not None
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ds = None
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gdal.Unlink("tmp/vsistdin_4_out.tif")
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###############################################################################
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@gdaltest.disable_exceptions()
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def test_vsistdin_5():
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f = open("tmp/test_vsistdin_5.bin", "wb")
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f.write(b"0123456789" * (1024 * 1024))
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f.close()
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with gdaltest.config_options(
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{
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"CPL_VSISTDIN_FILE": "tmp/test_vsistdin_5.bin",
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"CPL_VSISTDIN_RESET_POSITION": "YES",
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"CPL_VSISTDIN_FILE_CLOSE": "YES",
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}
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):
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f = gdal.VSIFOpenL("/vsistdin?buffer_limit=10MB", "rb")
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assert f is not None
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assert gdal.VSIFEofL(f) == 0
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assert gdal.VSIFReadL(10, 1, f) == b"0123456789"
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assert gdal.VSIFTellL(f) == 10
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assert gdal.VSIFSeekL(f, 5, 0) == 0
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assert gdal.VSIFTellL(f) == 5
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assert gdal.VSIFReadL(3, 1, f) == b"567"
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assert gdal.VSIFTellL(f) == 8
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assert gdal.VSIFReadL(4, 1, f) == b"8901"
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assert gdal.VSIFTellL(f) == 12
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assert gdal.VSIFSeekL(f, 0, 2) == 0
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assert gdal.VSIFTellL(f) == 10 * 1024 * 1024
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assert gdal.VSIFReadL(1, 1, f) == b""
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assert gdal.VSIFEofL(f) == 1
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assert gdal.VSIFTellL(f) == 10 * 1024 * 1024
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assert gdal.VSIFSeekL(f, 5, 0) == 0
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assert gdal.VSIFTellL(f) == 5
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assert gdal.VSIFReadL(3, 1, f) == b"567"
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assert gdal.VSIFTellL(f) == 8
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assert gdal.VSIFSeekL(f, 10 * 1024 * 1024 - 10 + 1, 0) == 0
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assert gdal.VSIFReadL(3, 1, f) == b"123"
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gdal.VSIFCloseL(f)
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with gdaltest.config_options(
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{
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"CPL_VSISTDIN_FILE": "tmp/test_vsistdin_5.bin",
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"CPL_VSISTDIN_RESET_POSITION": "YES",
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"CPL_VSISTDIN_FILE_CLOSE": "YES",
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}
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):
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f = gdal.VSIFOpenL("/vsistdin?buffer_limit=-1", "rb")
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assert f is not None
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assert gdal.VSIFSeekL(f, 0, 2) == 0
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assert gdal.VSIFTellL(f) == 10 * 1024 * 1024
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gdal.VSIFCloseL(f)
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assert gdal.VSIStatL("/vsistdin?buffer_limit=-1").size == 10 * 1024 * 1024
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with gdaltest.config_options(
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{
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"CPL_VSISTDIN_FILE": "tmp/test_vsistdin_5.bin",
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"CPL_VSISTDIN_RESET_POSITION": "YES",
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"CPL_VSISTDIN_FILE_CLOSE": "YES",
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}
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):
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f = gdal.VSIFOpenL("/vsistdin?buffer_limit=1GB", "rb")
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assert f is not None
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assert gdal.VSIFSeekL(f, 0, 2) == 0
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assert gdal.VSIFTellL(f) == 10 * 1024 * 1024
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gdal.VSIFCloseL(f)
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assert gdal.VSIStatL("/vsistdin?buffer_limit=-1").size == 10 * 1024 * 1024
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with gdaltest.config_options(
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{
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"CPL_VSISTDIN_FILE": "tmp/test_vsistdin_5.bin",
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"CPL_VSISTDIN_RESET_POSITION": "YES",
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"CPL_VSISTDIN_FILE_CLOSE": "YES",
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}
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):
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f = gdal.VSIFOpenL("/vsistdin?buffer_limit=10", "rb")
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assert f is not None
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assert gdal.VSIFSeekL(f, 0, 2) == 0
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assert gdal.VSIFTellL(f) == 10 * 1024 * 1024
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assert gdal.VSIFSeekL(f, 0, 0) == 0
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assert gdal.VSIFReadL(5, 1, f) == b"01234"
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assert gdal.VSIFReadL(3, 1, f) == b"567"
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with gdaltest.error_handler():
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assert gdal.VSIFReadL(3, 1, f) == b""
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gdal.VSIFCloseL(f)
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os.unlink("tmp/test_vsistdin_5.bin")
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