def test_minixml_4():
xml = """<?xml encoding="utf-8"?>\n<foo />\n"""
got_xml = gdal.SerializeXMLTree(gdal.ParseXMLString(xml))
assert xml == got_xml, 'serialize xml tree failed.'
def parse_jp2_box(xml_tree, out_f, src_jp2file):
if not (xml_tree[XML_TYPE_IDX] == gdal.CXT_Element
and xml_tree[XML_VALUE_IDX] == 'JP2Box'):
print('Not a JP2Box element')
return False
jp2box_name = get_attribute_val(xml_tree, 'name')
if jp2box_name is None:
print('Cannot find JP2Box.name attribute')
return False
if len(jp2box_name) != 4:
print('Invalid JP2Box.name : %s' % jp2box_name)
return False
hex_binary_content = get_node_content(
find_xml_node(xml_tree, 'BinaryContent', immediate_child=True))
decoded_content = find_xml_node(xml_tree,
'DecodedContent',
immediate_child=True)
decoded_geotiff = find_xml_node(xml_tree,
'DecodedGeoTIFF',
immediate_child=True)
text_content = get_node_content(
find_xml_node(xml_tree, 'TextContent', immediate_child=True))
xml_content = find_xml_node(xml_tree, 'XMLContent', immediate_child=True)
jp2box = find_xml_node(xml_tree, 'JP2Box', immediate_child=True)
jp2codestream = find_xml_node(xml_tree,
'JP2KCodeStream',
immediate_child=True)
if hex_binary_content:
if decoded_content or decoded_geotiff or text_content or xml_content or jp2box:
print(
'BinaryContent found, and one of DecodedContent/DecodedGeoTIFF/TextContent/XMLContent/JP2Box. The latter will be ignored'
)
if jp2box_name == 'uuid':
uuid = get_node_content(
find_xml_node(xml_tree, 'UUID', immediate_child=True))
if uuid is None:
print('Cannot find JP2Box.UUID element')
return False
else:
uuid = ''
out_f.write(
struct.pack(
'>I' * 1,
8 + int(len(hex_binary_content) / 2) + int(len(uuid) / 2)))
out_f.write(jp2box_name.encode('ascii'))
write_hexstring_as_binary(uuid, out_f)
write_hexstring_as_binary(hex_binary_content, out_f)
elif decoded_content:
if decoded_geotiff or text_content or xml_content or jp2box:
print(
'DecodedContent found, and one of DecodedGeoTIFF/TextContent/XMLContent/JP2Box. The latter will be ignored'
)
pos = out_f.tell()
out_f.write(struct.pack('>I' * 1, 0))
out_f.write(jp2box_name.encode('ascii'))
for child_idx in range(XML_FIRST_CHILD_IDX, len(decoded_content)):
child = decoded_content[child_idx]
if child[XML_TYPE_IDX] == gdal.CXT_Element and child[
XML_VALUE_IDX] == 'Field':
if not parse_field(child, out_f, src_jp2file):
return False
new_pos = out_f.tell()
out_f.seek(pos, 0)
out_f.write(struct.pack('>I' * 1, new_pos - pos))
out_f.seek(new_pos, 0)
elif text_content:
if decoded_geotiff or xml_content or jp2box:
print(
'TextContent found, and one of DecodedGeoTIFF/XMLContent/JP2Box. The latter will be ignored'
)
out_f.write(struct.pack('>I' * 1, 8 + len(text_content)))
out_f.write(jp2box_name.encode('ascii'))
out_f.write(text_content.encode('latin1'))
elif xml_content:
if decoded_geotiff or jp2box:
print(
'XMLContent found, and one of DecodedGeoTIFF/JP2Box. The latter will be ignored'
)
serialized_xml_content = gdal.SerializeXMLTree(
xml_content[XML_FIRST_CHILD_IDX])
out_f.write(struct.pack('>I' * 1, 8 + len(serialized_xml_content)))
out_f.write(jp2box_name.encode('ascii'))
out_f.write(serialized_xml_content.encode('latin1'))
elif jp2box:
if decoded_geotiff:
print(
'JP2Box found, and one of DecodedGeoTIFF. The latter will be ignored'
)
pos = out_f.tell()
out_f.write(struct.pack('>I' * 1, 0))
out_f.write(jp2box_name.encode('ascii'))
for child_idx in range(XML_FIRST_CHILD_IDX, len(xml_tree)):
child = xml_tree[child_idx]
if child[XML_TYPE_IDX] == gdal.CXT_Element and child[
XML_VALUE_IDX] == 'JP2Box':
if not parse_jp2_box(child, out_f, src_jp2file):
return False
new_pos = out_f.tell()
out_f.seek(pos, 0)
out_f.write(struct.pack('>I' * 1, new_pos - pos))
out_f.seek(new_pos, 0)
elif decoded_geotiff:
serialized_xml_content = gdal.SerializeXMLTree(
decoded_geotiff[XML_FIRST_CHILD_IDX])
vrt_ds = gdal.Open(serialized_xml_content)
if vrt_ds is None:
print('Cannot decode VRTDataset. Outputting empty content')
binary_content = ''
else:
tmpfilename = '/vsimem/build_jp2_from_xml_tmp.tif'
gdal.GetDriverByName('GTiff').CreateCopy(tmpfilename, vrt_ds)
tif_f = gdal.VSIFOpenL(tmpfilename, 'rb')
binary_content = gdal.VSIFReadL(1, 10000, tif_f)
gdal.VSIFCloseL(tif_f)
gdal.Unlink(tmpfilename)
uuid = get_node_content(
find_xml_node(xml_tree, 'UUID', immediate_child=True))
if uuid is None:
uuid = 'B14BF8BD083D4B43A5AE8CD7D5A6CE03'
out_f.write(
struct.pack('>I' * 1,
8 + len(binary_content) + int(len(uuid) / 2)))
out_f.write(jp2box_name.encode('ascii'))
write_hexstring_as_binary(uuid, out_f)
out_f.write(binary_content)
elif jp2codestream:
pos = out_f.tell()
out_f.write(struct.pack('>I' * 1, 0))
out_f.write(jp2box_name.encode('ascii'))
if not parse_jp2codestream(None, jp2codestream, out_f, src_jp2file):
return False
new_pos = out_f.tell()
out_f.seek(pos, 0)
out_f.write(struct.pack('>I' * 1, new_pos - pos))
out_f.seek(new_pos, 0)
else:
data_offset = get_attribute_val(xml_tree, 'data_offset')
if data_offset is None:
print('Cannot find JP2Box.data_offset attribute')
return False
data_offset = int(data_offset)
data_length = get_attribute_val(xml_tree, 'data_length')
if data_length is None:
print('Cannot find JP2Box.data_length attribute')
return False
data_length = int(data_length)
src_jp2file.seek(data_offset, 0)
data = src_jp2file.read(data_length)
out_f.write(struct.pack('>I' * 1, 8 + data_length))
out_f.write(jp2box_name.encode('ascii'))
out_f.write(data)
return True
def test_minixml_processing_instruction():
xml = """<?a b c d?>\n<foo />\n"""
got_xml = gdal.SerializeXMLTree(gdal.ParseXMLString(xml))
assert xml == got_xml, 'serialize xml tree failed.'
