254 lines
6.6 KiB
Python
254 lines
6.6 KiB
Python
![]() |
magic = (
|
||
|
b"\x00\x00\x00\x00\x00\x00\x00\x00"
|
||
|
+ b"\x00\x00\x00\x00\xc2\xea\x81\x60"
|
||
|
+ b"\xb3\x14\x11\xcf\xbd\x92\x08\x00"
|
||
|
+ b"\x09\xc7\x31\x8c\x18\x1f\x10\x11"
|
||
|
)
|
||
|
|
||
|
align_1_checker_value = b"3"
|
||
|
align_1_offset = 32
|
||
|
align_1_length = 1
|
||
|
align_1_value = 4
|
||
|
u64_byte_checker_value = b"3"
|
||
|
align_2_offset = 35
|
||
|
align_2_length = 1
|
||
|
align_2_value = 4
|
||
|
endianness_offset = 37
|
||
|
endianness_length = 1
|
||
|
platform_offset = 39
|
||
|
platform_length = 1
|
||
|
encoding_offset = 70
|
||
|
encoding_length = 1
|
||
|
dataset_offset = 92
|
||
|
dataset_length = 64
|
||
|
file_type_offset = 156
|
||
|
file_type_length = 8
|
||
|
date_created_offset = 164
|
||
|
date_created_length = 8
|
||
|
date_modified_offset = 172
|
||
|
date_modified_length = 8
|
||
|
header_size_offset = 196
|
||
|
header_size_length = 4
|
||
|
page_size_offset = 200
|
||
|
page_size_length = 4
|
||
|
page_count_offset = 204
|
||
|
page_count_length = 4
|
||
|
sas_release_offset = 216
|
||
|
sas_release_length = 8
|
||
|
sas_server_type_offset = 224
|
||
|
sas_server_type_length = 16
|
||
|
os_version_number_offset = 240
|
||
|
os_version_number_length = 16
|
||
|
os_maker_offset = 256
|
||
|
os_maker_length = 16
|
||
|
os_name_offset = 272
|
||
|
os_name_length = 16
|
||
|
page_bit_offset_x86 = 16
|
||
|
page_bit_offset_x64 = 32
|
||
|
subheader_pointer_length_x86 = 12
|
||
|
subheader_pointer_length_x64 = 24
|
||
|
page_type_offset = 0
|
||
|
page_type_length = 2
|
||
|
block_count_offset = 2
|
||
|
block_count_length = 2
|
||
|
subheader_count_offset = 4
|
||
|
subheader_count_length = 2
|
||
|
page_meta_type = 0
|
||
|
page_data_type = 256
|
||
|
page_amd_type = 1024
|
||
|
page_metc_type = 16384
|
||
|
page_comp_type = -28672
|
||
|
page_mix_types = [512, 640]
|
||
|
subheader_pointers_offset = 8
|
||
|
truncated_subheader_id = 1
|
||
|
compressed_subheader_id = 4
|
||
|
compressed_subheader_type = 1
|
||
|
text_block_size_length = 2
|
||
|
row_length_offset_multiplier = 5
|
||
|
row_count_offset_multiplier = 6
|
||
|
col_count_p1_multiplier = 9
|
||
|
col_count_p2_multiplier = 10
|
||
|
row_count_on_mix_page_offset_multiplier = 15
|
||
|
column_name_pointer_length = 8
|
||
|
column_name_text_subheader_offset = 0
|
||
|
column_name_text_subheader_length = 2
|
||
|
column_name_offset_offset = 2
|
||
|
column_name_offset_length = 2
|
||
|
column_name_length_offset = 4
|
||
|
column_name_length_length = 2
|
||
|
column_data_offset_offset = 8
|
||
|
column_data_length_offset = 8
|
||
|
column_data_length_length = 4
|
||
|
column_type_offset = 14
|
||
|
column_type_length = 1
|
||
|
column_format_text_subheader_index_offset = 22
|
||
|
column_format_text_subheader_index_length = 2
|
||
|
column_format_offset_offset = 24
|
||
|
column_format_offset_length = 2
|
||
|
column_format_length_offset = 26
|
||
|
column_format_length_length = 2
|
||
|
column_label_text_subheader_index_offset = 28
|
||
|
column_label_text_subheader_index_length = 2
|
||
|
column_label_offset_offset = 30
|
||
|
column_label_offset_length = 2
|
||
|
column_label_length_offset = 32
|
||
|
column_label_length_length = 2
|
||
|
rle_compression = b"SASYZCRL"
|
||
|
rdc_compression = b"SASYZCR2"
|
||
|
|
||
|
compression_literals = [rle_compression, rdc_compression]
|
||
|
|
||
|
# Incomplete list of encodings, using SAS nomenclature:
|
||
|
# http://support.sas.com/documentation/cdl/en/nlsref/61893/HTML/default/viewer.htm#a002607278.htm
|
||
|
encoding_names = {
|
||
|
29: "latin1",
|
||
|
20: "utf-8",
|
||
|
33: "cyrillic",
|
||
|
60: "wlatin2",
|
||
|
61: "wcyrillic",
|
||
|
62: "wlatin1",
|
||
|
90: "ebcdic870",
|
||
|
}
|
||
|
|
||
|
|
||
|
class SASIndex:
|
||
|
row_size_index = 0
|
||
|
column_size_index = 1
|
||
|
subheader_counts_index = 2
|
||
|
column_text_index = 3
|
||
|
column_name_index = 4
|
||
|
column_attributes_index = 5
|
||
|
format_and_label_index = 6
|
||
|
column_list_index = 7
|
||
|
data_subheader_index = 8
|
||
|
|
||
|
|
||
|
subheader_signature_to_index = {
|
||
|
b"\xF7\xF7\xF7\xF7": SASIndex.row_size_index,
|
||
|
b"\x00\x00\x00\x00\xF7\xF7\xF7\xF7": SASIndex.row_size_index,
|
||
|
b"\xF7\xF7\xF7\xF7\x00\x00\x00\x00": SASIndex.row_size_index,
|
||
|
b"\xF7\xF7\xF7\xF7\xFF\xFF\xFB\xFE": SASIndex.row_size_index,
|
||
|
b"\xF6\xF6\xF6\xF6": SASIndex.column_size_index,
|
||
|
b"\x00\x00\x00\x00\xF6\xF6\xF6\xF6": SASIndex.column_size_index,
|
||
|
b"\xF6\xF6\xF6\xF6\x00\x00\x00\x00": SASIndex.column_size_index,
|
||
|
b"\xF6\xF6\xF6\xF6\xFF\xFF\xFB\xFE": SASIndex.column_size_index,
|
||
|
b"\x00\xFC\xFF\xFF": SASIndex.subheader_counts_index,
|
||
|
b"\xFF\xFF\xFC\x00": SASIndex.subheader_counts_index,
|
||
|
b"\x00\xFC\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.subheader_counts_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFC\x00": SASIndex.subheader_counts_index,
|
||
|
b"\xFD\xFF\xFF\xFF": SASIndex.column_text_index,
|
||
|
b"\xFF\xFF\xFF\xFD": SASIndex.column_text_index,
|
||
|
b"\xFD\xFF\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.column_text_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFD": SASIndex.column_text_index,
|
||
|
b"\xFF\xFF\xFF\xFF": SASIndex.column_name_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.column_name_index,
|
||
|
b"\xFC\xFF\xFF\xFF": SASIndex.column_attributes_index,
|
||
|
b"\xFF\xFF\xFF\xFC": SASIndex.column_attributes_index,
|
||
|
b"\xFC\xFF\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.column_attributes_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFC": SASIndex.column_attributes_index,
|
||
|
b"\xFE\xFB\xFF\xFF": SASIndex.format_and_label_index,
|
||
|
b"\xFF\xFF\xFB\xFE": SASIndex.format_and_label_index,
|
||
|
b"\xFE\xFB\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.format_and_label_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFB\xFE": SASIndex.format_and_label_index,
|
||
|
b"\xFE\xFF\xFF\xFF": SASIndex.column_list_index,
|
||
|
b"\xFF\xFF\xFF\xFE": SASIndex.column_list_index,
|
||
|
b"\xFE\xFF\xFF\xFF\xFF\xFF\xFF\xFF": SASIndex.column_list_index,
|
||
|
b"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFE": SASIndex.column_list_index,
|
||
|
}
|
||
|
|
||
|
|
||
|
# List of frequently used SAS date and datetime formats
|
||
|
# http://support.sas.com/documentation/cdl/en/etsug/60372/HTML/default/viewer.htm#etsug_intervals_sect009.htm
|
||
|
# https://github.com/epam/parso/blob/master/src/main/java/com/epam/parso/impl/SasFileConstants.java
|
||
|
sas_date_formats = (
|
||
|
"DATE",
|
||
|
"DAY",
|
||
|
"DDMMYY",
|
||
|
"DOWNAME",
|
||
|
"JULDAY",
|
||
|
"JULIAN",
|
||
|
"MMDDYY",
|
||
|
"MMYY",
|
||
|
"MMYYC",
|
||
|
"MMYYD",
|
||
|
"MMYYP",
|
||
|
"MMYYS",
|
||
|
"MMYYN",
|
||
|
"MONNAME",
|
||
|
"MONTH",
|
||
|
"MONYY",
|
||
|
"QTR",
|
||
|
"QTRR",
|
||
|
"NENGO",
|
||
|
"WEEKDATE",
|
||
|
"WEEKDATX",
|
||
|
"WEEKDAY",
|
||
|
"WEEKV",
|
||
|
"WORDDATE",
|
||
|
"WORDDATX",
|
||
|
"YEAR",
|
||
|
"YYMM",
|
||
|
"YYMMC",
|
||
|
"YYMMD",
|
||
|
"YYMMP",
|
||
|
"YYMMS",
|
||
|
"YYMMN",
|
||
|
"YYMON",
|
||
|
"YYMMDD",
|
||
|
"YYQ",
|
||
|
"YYQC",
|
||
|
"YYQD",
|
||
|
"YYQP",
|
||
|
"YYQS",
|
||
|
"YYQN",
|
||
|
"YYQR",
|
||
|
"YYQRC",
|
||
|
"YYQRD",
|
||
|
"YYQRP",
|
||
|
"YYQRS",
|
||
|
"YYQRN",
|
||
|
"YYMMDDP",
|
||
|
"YYMMDDC",
|
||
|
"E8601DA",
|
||
|
"YYMMDDN",
|
||
|
"MMDDYYC",
|
||
|
"MMDDYYS",
|
||
|
"MMDDYYD",
|
||
|
"YYMMDDS",
|
||
|
"B8601DA",
|
||
|
"DDMMYYN",
|
||
|
"YYMMDDD",
|
||
|
"DDMMYYB",
|
||
|
"DDMMYYP",
|
||
|
"MMDDYYP",
|
||
|
"YYMMDDB",
|
||
|
"MMDDYYN",
|
||
|
"DDMMYYC",
|
||
|
"DDMMYYD",
|
||
|
"DDMMYYS",
|
||
|
"MINGUO",
|
||
|
)
|
||
|
|
||
|
sas_datetime_formats = (
|
||
|
"DATETIME",
|
||
|
"DTWKDATX",
|
||
|
"B8601DN",
|
||
|
"B8601DT",
|
||
|
"B8601DX",
|
||
|
"B8601DZ",
|
||
|
"B8601LX",
|
||
|
"E8601DN",
|
||
|
"E8601DT",
|
||
|
"E8601DX",
|
||
|
"E8601DZ",
|
||
|
"E8601LX",
|
||
|
"DATEAMPM",
|
||
|
"DTDATE",
|
||
|
"DTMONYY",
|
||
|
"DTMONYY",
|
||
|
"DTWKDATX",
|
||
|
"DTYEAR",
|
||
|
"TOD",
|
||
|
"MDYAMPM",
|
||
|
)
|