def test_gdaldem_hillshade_combined():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' hillshade -s 111120 -z 30 -combined ../gdrivers/data/n43.dt0 tmp/n43_hillshade_combined.tif')

    src_ds = gdal.Open('../gdrivers/data/n43.dt0')
    ds = gdal.Open('tmp/n43_hillshade_combined.tif')
    assert ds is not None

    cs = ds.GetRasterBand(1).Checksum()
    assert cs == 43876, 'Bad checksum'

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        assert abs(src_gt[i] - dst_gt[i]) <= 1e-10, 'Bad geotransform'

    dst_wkt = ds.GetProjectionRef()
    assert dst_wkt.find('AUTHORITY["EPSG","4326"]') != -1, 'Bad projection'

    assert ds.GetRasterBand(1).GetNoDataValue() == 0, 'Bad nodata value'

    src_ds = None
    ds = None

def test_gdaldem_color_relief_nodata_nan():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    f = open('tmp/nodata_nan_src.asc', 'wt')
    f.write("""ncols        2
nrows        2
xllcorner    440720
yllcorner    3750120
cellsize     60
NODATA_value nan
 0.0 0
 0 nan""")
    f.close()

    f = open('tmp/nodata_nan_plt.txt', 'wt')
    f.write('0 0 0 0\n')
    f.write('nv 1 1 1\n')
    f.close()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief tmp/nodata_nan_src.asc tmp/nodata_nan_plt.txt tmp/nodata_nan_out.tif')

    ds = gdal.Open('tmp/nodata_nan_out.tif')
    val = ds.GetRasterBand(1).ReadRaster()
    ds = None

    import struct
    val = struct.unpack('B' * 4, val)
    assert val == (0, 0, 0, 1)

    os.unlink('tmp/nodata_nan_src.asc')
    os.unlink('tmp/nodata_nan_plt.txt')
    os.unlink('tmp/nodata_nan_out.tif')

def test_gdaldem_color_relief_cpt():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief ../gdrivers/data/n43.dt0 data/color_file.cpt tmp/n43_colorrelief_cpt.tif')
    src_ds = gdal.Open('../gdrivers/data/n43.dt0')
    ds = gdal.Open('tmp/n43_colorrelief_cpt.tif')
    assert ds is not None

    assert ds.GetRasterBand(1).Checksum() == 55009, 'Bad checksum'

    assert ds.GetRasterBand(2).Checksum() == 37543, 'Bad checksum'

    assert ds.GetRasterBand(3).Checksum() == 47711, 'Bad checksum'

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        assert abs(src_gt[i] - dst_gt[i]) <= 1e-10, 'Bad geotransform'

    dst_wkt = ds.GetProjectionRef()
    assert dst_wkt.find('AUTHORITY["EPSG","4326"]') != -1, 'Bad projection'

    src_ds = None
    ds = None

def test_gdaldem_hillshade_azimuth():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    from sys import version_info
    ds = gdal.GetDriverByName('GTiff').Create('tmp/pyramid.tif', 100, 100, 1)
    ds.SetGeoTransform([2,0.01,0,49,0,-0.01])
    sr = osr.SpatialReference()
    sr.ImportFromEPSG(4326)
    ds.SetProjection(sr.ExportToWkt())
    for j in range(100):
        data = ''
        for i in range(100):
            val = 255 - 5 * max(abs(50-i),abs(50-j))
            data = data + ('%c' % (val))
        if version_info >= (3,0,0):
            data = bytes(data, 'ISO-8859-1')
        ds.GetRasterBand(1).WriteRaster(0,j,100,1,data)

    ds = None

    # Light from the east
    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' hillshade -s 111120 -z 100 -az 90 -co COMPRESS=LZW tmp/pyramid.tif tmp/pyramid_shaded.tif')

    ds_ref = gdal.Open('data/pyramid_shaded_ref.tif')
    ds = gdal.Open('tmp/pyramid_shaded.tif')
    if gdaltest.compare_ds(ds, ds_ref, verbose = 1) > 1:
        gdaltest.post_reason('Bad checksum')
        return 'fail'
    ds = None
    ds_ref = None

    return 'success'

def test_gdaldem_aspect():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' aspect ../gdrivers/data/n43.dt0 tmp/n43_aspect.tif')

    src_ds = gdal.Open('../gdrivers/data/n43.dt0')
    ds = gdal.Open('tmp/n43_aspect.tif')
    if ds is None:
        return 'fail'

    if ds.GetRasterBand(1).Checksum() != 54885:
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        if abs(src_gt[i] - dst_gt[i]) > 1e-10:
            gdaltest.post_reason('Bad geotransform')
            return 'fail'

    dst_wkt = ds.GetProjectionRef()
    if dst_wkt.find('AUTHORITY["EPSG","4326"]') == -1:
        gdaltest.post_reason('Bad projection')
        return 'fail'

    if ds.GetRasterBand(1).GetNoDataValue() != -9999.0:
        gdaltest.post_reason('Bad nodata value')
        return 'fail'

    src_ds = None
    ds = None

    return 'success'

def test_gdaldem_color_relief_nearest_color_entry():
    if test_cli_utilities.get_gdaldem_path() is None:
        return "skip"

    gdaltest.runexternal(
        test_cli_utilities.get_gdaldem_path()
        + " color-relief -nearest_color_entry ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief_nearest.tif"
    )
    ds = gdal.Open("tmp/n43_colorrelief_nearest.tif")
    if ds is None:
        return "fail"

    if ds.GetRasterBand(1).Checksum() != 57296:
        print(ds.GetRasterBand(1).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(2).Checksum() != 42926:
        print(ds.GetRasterBand(2).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(3).Checksum() != 47181:
        print(ds.GetRasterBand(3).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    ds = None

    return "success"

def test_gdaldem_color_relief_vrt():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of VRT ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief.vrt')
    src_ds = gdal.Open('../gdrivers/data/n43.dt0')
    ds = gdal.Open('tmp/n43_colorrelief.vrt')
    if ds is None:
        return 'fail'

    ds_ref = gdal.Open('tmp/n43_colorrelief.tif')
    if gdaltest.compare_ds(ds, ds_ref, verbose = 0) > 1:
        gdaltest.post_reason('Bad checksum')
        return 'fail'
    ds_ref = None

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        if abs(src_gt[i] - dst_gt[i]) > 1e-10:
            gdaltest.post_reason('Bad geotransform')
            return 'fail'

    dst_wkt = ds.GetProjectionRef()
    if dst_wkt.find('AUTHORITY["EPSG","4326"]') == -1:
        gdaltest.post_reason('Bad projection')
        return 'fail'

    src_ds = None
    ds = None

    return 'success'

def test_gdaldem_color_relief_png():
    if test_cli_utilities.get_gdaldem_path() is None:
        return "skip"

    gdaltest.runexternal(
        test_cli_utilities.get_gdaldem_path()
        + " color-relief -of PNG ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief.png"
    )
    ds = gdal.Open("tmp/n43_colorrelief.png")
    if ds is None:
        return "fail"

    if ds.GetRasterBand(1).Checksum() != 55009:
        print(ds.GetRasterBand(1).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(2).Checksum() != 37543:
        print(ds.GetRasterBand(2).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(3).Checksum() != 47711:
        print(ds.GetRasterBand(3).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    ds = None

    return "success"

def test_gdaldem_color_relief_from_float32_to_png():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'
    if test_cli_utilities.get_gdal_translate_path() is None:
        return 'skip'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of PNG tmp/n43_float32.tif data/color_file.txt tmp/n43_colorrelief_from_float32.png')
    ds = gdal.Open('tmp/n43_colorrelief_from_float32.png')
    if ds is None:
        return 'fail'

    if ds.GetRasterBand(1).Checksum() != 55009:
        print(ds.GetRasterBand(1).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    if ds.GetRasterBand(2).Checksum() != 37543:
        print(ds.GetRasterBand(2).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    if ds.GetRasterBand(3).Checksum() != 47711:
        print(ds.GetRasterBand(3).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    ds = None

    return 'success'

def test_gdaldem_color_relief_nearest_color_entry_vrt():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of VRT -nearest_color_entry ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief_nearest.vrt')
    ds = gdal.Open('tmp/n43_colorrelief_nearest.vrt')
    if ds is None:
        return 'fail'

    if ds.GetRasterBand(1).Checksum() != 57296:
        print(ds.GetRasterBand(1).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    if ds.GetRasterBand(2).Checksum() != 42926:
        print(ds.GetRasterBand(2).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    if ds.GetRasterBand(3).Checksum() != 47181:
        print(ds.GetRasterBand(3).Checksum())
        gdaltest.post_reason('Bad checksum')
        return 'fail'

    ds = None

    return 'success'

def test_gdaldem_hillshade_compressed_tiled_output():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    (out, err) = gdaltest.runexternal_out_and_err(test_cli_utilities.get_gdaldem_path() + ' hillshade -s 111120 -z 30 ../gdrivers/data/n43.dt0 tmp/n43_hillshade_compressed_tiled.tif -co TILED=YES -co COMPRESS=DEFLATE --config GDAL_CACHEMAX 0')
    if not (err is None or err == '') :
        gdaltest.post_reason('got error/warning')
        print(err)
        return 'fail'

    ds = gdal.Open('tmp/n43_hillshade_compressed_tiled.tif')
    if ds is None:
        return 'fail'

    cs = ds.GetRasterBand(1).Checksum()
    if cs != 45587:
        gdaltest.post_reason('Bad checksum')
        print(cs)
        return 'fail'

    ds = None

    stat_uncompressed = os.stat('tmp/n43_hillshade.tif')
    stat_compressed = os.stat('tmp/n43_hillshade_compressed_tiled.tif')
    if stat_uncompressed.st_size < stat_compressed.st_size:
        gdaltest.post_reason('failure: compressed size greater than uncompressed one')
        return 'fail'

    return 'success'

def test_gdaldem_color_relief_repeated_entry():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    f = open('tmp/test_gdaldem_color_relief_repeated_entry.asc', 'wt')
    f.write("""ncols        2
nrows        3
xllcorner    440720
yllcorner    3750120
cellsize     60
NODATA_value 5
 1 4.9
 5 5.1
 6 7 """)
    f.close()

    f = open('tmp/test_gdaldem_color_relief_repeated_entry.txt', 'wt')
    f.write('1 1 1 1\n')
    f.write('6 10 10 10\n')
    f.write('6 20 20 20\n')
    f.write('8 30 30 30\n')
    f.write('nv 5 5 5\n')
    f.close()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief tmp/test_gdaldem_color_relief_repeated_entry.asc tmp/test_gdaldem_color_relief_repeated_entry.txt tmp/test_gdaldem_color_relief_repeated_entry_out.tif')

    ds = gdal.Open('tmp/test_gdaldem_color_relief_repeated_entry_out.tif')
    val = ds.GetRasterBand(1).ReadRaster()
    ds = None

    import struct
    val = struct.unpack('B' * 6, val)
    if val != (1,1,5,10,10,25):
        gdaltest.post_reason('fail')
        print(val)
        return 'fail'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief tmp/test_gdaldem_color_relief_repeated_entry.asc tmp/test_gdaldem_color_relief_repeated_entry.txt tmp/test_gdaldem_color_relief_repeated_entry_out.vrt -of VRT')

    ds = gdal.Open('tmp/test_gdaldem_color_relief_repeated_entry_out.vrt')
    val = ds.GetRasterBand(1).ReadRaster()
    ds = None

    import struct
    val = struct.unpack('B' * 6, val)
    if val != (1,1,5,10,10,25):
        gdaltest.post_reason('fail')
        print(val)
        return 'fail'

    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry.asc')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry.txt')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry_out.tif')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry_out.vrt')

    return 'success'

def test_gdaldem_color_relief_repeated_entry():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    f = open('tmp/test_gdaldem_color_relief_repeated_entry.asc', 'wt')
    f.write("""ncols        2
nrows        3
xllcorner    440720
yllcorner    3750120
cellsize     60
NODATA_value 5
 1 4.9
 5 5.1
 6 7 """)
    f.close()

    f = open('tmp/test_gdaldem_color_relief_repeated_entry.txt', 'wt')
    f.write('1 1 1 1\n')
    f.write('6 10 10 10\n')
    f.write('6 20 20 20\n')
    f.write('8 30 30 30\n')
    f.write('nv 5 5 5\n')
    f.close()

    gdaltest.runexternal(
        test_cli_utilities.get_gdaldem_path() + ' color-relief tmp/test_gdaldem_color_relief_repeated_entry.asc tmp/test_gdaldem_color_relief_repeated_entry.txt tmp/test_gdaldem_color_relief_repeated_entry_out.tif',
        display_live_on_parent_stdout=True,
    )

    ds = gdal.Open('tmp/test_gdaldem_color_relief_repeated_entry_out.tif')
    val = ds.GetRasterBand(1).ReadRaster()
    ds = None

    import struct
    val = struct.unpack('B' * 6, val)
    assert val == (1, 1, 5, 10, 10, 25)

    gdaltest.runexternal(
        test_cli_utilities.get_gdaldem_path() + ' color-relief tmp/test_gdaldem_color_relief_repeated_entry.asc tmp/test_gdaldem_color_relief_repeated_entry.txt tmp/test_gdaldem_color_relief_repeated_entry_out.vrt -of VRT',
        display_live_on_parent_stdout=True,
    )

    ds = gdal.Open('tmp/test_gdaldem_color_relief_repeated_entry_out.vrt')
    val = ds.GetRasterBand(1).ReadRaster()
    ds = None

    val = struct.unpack('B' * 6, val)
    assert val == (1, 1, 5, 10, 10, 25)

    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry.asc')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry.txt')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry_out.tif')
    os.unlink('tmp/test_gdaldem_color_relief_repeated_entry_out.vrt')

def test_gdaldem_hillshade_png_compute_edges():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' hillshade -compute_edges -of PNG  -s 111120 -z 30 ../gdrivers/data/n43.dt0 tmp/n43_hillshade_compute_edges.png')

    ds = gdal.Open('tmp/n43_hillshade_compute_edges.png')
    assert ds is not None

    cs = ds.GetRasterBand(1).Checksum()
    assert cs == 50239, 'Bad checksum'

    ds = None

def test_gdaldem_color_relief_png():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of PNG ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief.png')
    ds = gdal.Open('tmp/n43_colorrelief.png')
    assert ds is not None

    assert ds.GetRasterBand(1).Checksum() == 55009, 'Bad checksum'

    assert ds.GetRasterBand(2).Checksum() == 37543, 'Bad checksum'

    assert ds.GetRasterBand(3).Checksum() == 47711, 'Bad checksum'

    ds = None

def test_gdaldem_color_relief_nearest_color_entry_vrt():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of VRT -nearest_color_entry ../gdrivers/data/n43.dt0 data/color_file.txt tmp/n43_colorrelief_nearest.vrt')
    ds = gdal.Open('tmp/n43_colorrelief_nearest.vrt')
    assert ds is not None

    assert ds.GetRasterBand(1).Checksum() == 57296, 'Bad checksum'

    assert ds.GetRasterBand(2).Checksum() == 42926, 'Bad checksum'

    assert ds.GetRasterBand(3).Checksum() == 47181, 'Bad checksum'

    ds = None

def test_gdaldem_color_relief_from_float32_to_png():
    if test_cli_utilities.get_gdaldem_path() is None:
        pytest.skip()
    if test_cli_utilities.get_gdal_translate_path() is None:
        pytest.skip()

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' color-relief -of PNG tmp/n43_float32.tif data/color_file.txt tmp/n43_colorrelief_from_float32.png')
    ds = gdal.Open('tmp/n43_colorrelief_from_float32.png')
    assert ds is not None

    assert ds.GetRasterBand(1).Checksum() == 55009, 'Bad checksum'

    assert ds.GetRasterBand(2).Checksum() == 37543, 'Bad checksum'

    assert ds.GetRasterBand(3).Checksum() == 47711, 'Bad checksum'

    ds = None

def test_gdaldem_color_relief_cpt():
    if test_cli_utilities.get_gdaldem_path() is None:
        return "skip"

    gdaltest.runexternal(
        test_cli_utilities.get_gdaldem_path()
        + " color-relief ../gdrivers/data/n43.dt0 data/color_file.cpt tmp/n43_colorrelief_cpt.tif"
    )
    src_ds = gdal.Open("../gdrivers/data/n43.dt0")
    ds = gdal.Open("tmp/n43_colorrelief_cpt.tif")
    if ds is None:
        return "fail"

    if ds.GetRasterBand(1).Checksum() != 55009:
        print(ds.GetRasterBand(1).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(2).Checksum() != 37543:
        print(ds.GetRasterBand(2).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    if ds.GetRasterBand(3).Checksum() != 47711:
        print(ds.GetRasterBand(3).Checksum())
        gdaltest.post_reason("Bad checksum")
        return "fail"

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        if abs(src_gt[i] - dst_gt[i]) > 1e-10:
            gdaltest.post_reason("Bad geotransform")
            return "fail"

    dst_wkt = ds.GetProjectionRef()
    if dst_wkt.find('AUTHORITY["EPSG","4326"]') == -1:
        gdaltest.post_reason("Bad projection")
        return "fail"

    src_ds = None
    ds = None

    return "success"

def test_gdaldem_hillshade():
    if test_cli_utilities.get_gdaldem_path() is None:
        return "skip"

    (out, err) = gdaltest.runexternal_out_and_err(
        test_cli_utilities.get_gdaldem_path()
        + " hillshade -s 111120 -z 30 ../gdrivers/data/n43.dt0 tmp/n43_hillshade.tif"
    )
    if not (err is None or err == ""):
        gdaltest.post_reason("got error/warning")
        print(err)
        return "fail"

    src_ds = gdal.Open("../gdrivers/data/n43.dt0")
    ds = gdal.Open("tmp/n43_hillshade.tif")
    if ds is None:
        return "fail"

    cs = ds.GetRasterBand(1).Checksum()
    if cs != 45587:
        gdaltest.post_reason("Bad checksum")
        print(cs)
        return "fail"

    src_gt = src_ds.GetGeoTransform()
    dst_gt = ds.GetGeoTransform()
    for i in range(6):
        if abs(src_gt[i] - dst_gt[i]) > 1e-10:
            gdaltest.post_reason("Bad geotransform")
            return "fail"

    dst_wkt = ds.GetProjectionRef()
    if dst_wkt.find('AUTHORITY["EPSG","4326"]') == -1:
        gdaltest.post_reason("Bad projection")
        return "fail"

    if ds.GetRasterBand(1).GetNoDataValue() != 0:
        gdaltest.post_reason("Bad nodata value")
        return "fail"

    src_ds = None
    ds = None

    return "success"

def test_gdaldem_hillshade_png_compute_edges():
    if test_cli_utilities.get_gdaldem_path() is None:
        return 'skip'

    gdaltest.runexternal(test_cli_utilities.get_gdaldem_path() + ' hillshade -compute_edges -of PNG  -s 111120 -z 30 ../gdrivers/data/n43.dt0 tmp/n43_hillshade_compute_edges.png')

    ds = gdal.Open('tmp/n43_hillshade_compute_edges.png')
    if ds is None:
        return 'fail'

    cs = ds.GetRasterBand(1).Checksum()
    if cs != 50239:
        gdaltest.post_reason('Bad checksum')
        print(cs)
        return 'fail'

    ds = None

    return 'success'