######################## BEGIN LICENSE BLOCK ########################
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 1998
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Mark Pilgrim - port to Python
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see
# .
######################### END LICENSE BLOCK #########################
from .codingstatemachinedict import CodingStateMachineDict
from .enums import MachineState
# BIG5
# fmt: off
BIG5_CLS = (
1, 1, 1, 1, 1, 1, 1, 1, # 00 - 07 #allow 0x00 as legal value
1, 1, 1, 1, 1, 1, 0, 0, # 08 - 0f
1, 1, 1, 1, 1, 1, 1, 1, # 10 - 17
1, 1, 1, 0, 1, 1, 1, 1, # 18 - 1f
1, 1, 1, 1, 1, 1, 1, 1, # 20 - 27
1, 1, 1, 1, 1, 1, 1, 1, # 28 - 2f
1, 1, 1, 1, 1, 1, 1, 1, # 30 - 37
1, 1, 1, 1, 1, 1, 1, 1, # 38 - 3f
2, 2, 2, 2, 2, 2, 2, 2, # 40 - 47
2, 2, 2, 2, 2, 2, 2, 2, # 48 - 4f
2, 2, 2, 2, 2, 2, 2, 2, # 50 - 57
2, 2, 2, 2, 2, 2, 2, 2, # 58 - 5f
2, 2, 2, 2, 2, 2, 2, 2, # 60 - 67
2, 2, 2, 2, 2, 2, 2, 2, # 68 - 6f
2, 2, 2, 2, 2, 2, 2, 2, # 70 - 77
2, 2, 2, 2, 2, 2, 2, 1, # 78 - 7f
4, 4, 4, 4, 4, 4, 4, 4, # 80 - 87
4, 4, 4, 4, 4, 4, 4, 4, # 88 - 8f
4, 4, 4, 4, 4, 4, 4, 4, # 90 - 97
4, 4, 4, 4, 4, 4, 4, 4, # 98 - 9f
4, 3, 3, 3, 3, 3, 3, 3, # a0 - a7
3, 3, 3, 3, 3, 3, 3, 3, # a8 - af
3, 3, 3, 3, 3, 3, 3, 3, # b0 - b7
3, 3, 3, 3, 3, 3, 3, 3, # b8 - bf
3, 3, 3, 3, 3, 3, 3, 3, # c0 - c7
3, 3, 3, 3, 3, 3, 3, 3, # c8 - cf
3, 3, 3, 3, 3, 3, 3, 3, # d0 - d7
3, 3, 3, 3, 3, 3, 3, 3, # d8 - df
3, 3, 3, 3, 3, 3, 3, 3, # e0 - e7
3, 3, 3, 3, 3, 3, 3, 3, # e8 - ef
3, 3, 3, 3, 3, 3, 3, 3, # f0 - f7
3, 3, 3, 3, 3, 3, 3, 0 # f8 - ff
)
BIG5_ST = (
MachineState.ERROR,MachineState.START,MachineState.START, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ERROR,MachineState.ERROR,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ERROR,#08-0f
MachineState.ERROR,MachineState.START,MachineState.START,MachineState.START,MachineState.START,MachineState.START,MachineState.START,MachineState.START#10-17
)
# fmt: on
BIG5_CHAR_LEN_TABLE = (0, 1, 1, 2, 0)
BIG5_SM_MODEL: CodingStateMachineDict = {
"class_table": BIG5_CLS,
"class_factor": 5,
"state_table": BIG5_ST,
"char_len_table": BIG5_CHAR_LEN_TABLE,
"name": "Big5",
}
# CP949
# fmt: off
"""
# Classes
0: Unused
1: 00-40, 5B-60, 7B-7F : Ascii
2: C7-FD
3: C9,FE : User-Defined Area
4: 41-52
5: 53-5A, 61-7A
6: 81-A0
7: A1-AC, B0-C5
8: AD-AF
9: C6
# Byte 1
Ascii: 00-7F : 1 + 4 + 5
State 3: 81-AC, B0-C5 : 6 + 7
State 4: AD-AF : 8
State 5: C6 : 9
State 6: C7-FE : 2 (+ 3)
# Byte 2
State 3: 41-5A, 61-7A, 81-FE : 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9
State 4: 41-5A, 61-7A, 81-A0 : 4 + 5 + 6
State 5: 41-52, A1-FE : 2 + 3 + 4 + 7 + 8 + 9
State 6: A1-FE : 2 + 3 + 7 + 8 + 9
"""
CP949_CLS = (
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, # 00 - 0f
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, # 10 - 1f
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, # 20 - 2f
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, # 30 - 3f
1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, # 40 - 4f
4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, # 50 - 5f
1, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, # 60 - 6f
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, # 70 - 7f
0, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, # 80 - 8f
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, # 90 - 9f
6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, # a0 - af
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, # b0 - bf
7, 7, 7, 7, 7, 7, 9, 2, 2, 3, 2, 2, 2, 2, 2, 2, # c0 - cf
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, # d0 - df
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, # e0 - ef
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 0, # f0 - ff
)
CP949_ST = (
# 0 1 2 3 4 5 6 7 8 9
MachineState.ERROR, MachineState.START, 6, MachineState.ERROR, MachineState.START, MachineState.START, 3, 3, 4, 5, # START
MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, # ERROR
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME, # ITSME
MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, MachineState.START, MachineState.START, MachineState.START, MachineState.START, MachineState.START, # 3
MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, # 4
MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, # 5
MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, # 6
)
# fmt: on
CP949_CHAR_LEN_TABLE = (0, 1, 2, 0, 1, 1, 2, 2, 2, 2)
CP949_SM_MODEL: CodingStateMachineDict = {
"class_table": CP949_CLS,
"class_factor": 10,
"state_table": CP949_ST,
"char_len_table": CP949_CHAR_LEN_TABLE,
"name": "CP949",
}
# EUC-JP
# fmt: off
EUCJP_CLS = (
4, 4, 4, 4, 4, 4, 4, 4, # 00 - 07
4, 4, 4, 4, 4, 4, 5, 5, # 08 - 0f
4, 4, 4, 4, 4, 4, 4, 4, # 10 - 17
4, 4, 4, 5, 4, 4, 4, 4, # 18 - 1f
4, 4, 4, 4, 4, 4, 4, 4, # 20 - 27
4, 4, 4, 4, 4, 4, 4, 4, # 28 - 2f
4, 4, 4, 4, 4, 4, 4, 4, # 30 - 37
4, 4, 4, 4, 4, 4, 4, 4, # 38 - 3f
4, 4, 4, 4, 4, 4, 4, 4, # 40 - 47
4, 4, 4, 4, 4, 4, 4, 4, # 48 - 4f
4, 4, 4, 4, 4, 4, 4, 4, # 50 - 57
4, 4, 4, 4, 4, 4, 4, 4, # 58 - 5f
4, 4, 4, 4, 4, 4, 4, 4, # 60 - 67
4, 4, 4, 4, 4, 4, 4, 4, # 68 - 6f
4, 4, 4, 4, 4, 4, 4, 4, # 70 - 77
4, 4, 4, 4, 4, 4, 4, 4, # 78 - 7f
5, 5, 5, 5, 5, 5, 5, 5, # 80 - 87
5, 5, 5, 5, 5, 5, 1, 3, # 88 - 8f
5, 5, 5, 5, 5, 5, 5, 5, # 90 - 97
5, 5, 5, 5, 5, 5, 5, 5, # 98 - 9f
5, 2, 2, 2, 2, 2, 2, 2, # a0 - a7
2, 2, 2, 2, 2, 2, 2, 2, # a8 - af
2, 2, 2, 2, 2, 2, 2, 2, # b0 - b7
2, 2, 2, 2, 2, 2, 2, 2, # b8 - bf
2, 2, 2, 2, 2, 2, 2, 2, # c0 - c7
2, 2, 2, 2, 2, 2, 2, 2, # c8 - cf
2, 2, 2, 2, 2, 2, 2, 2, # d0 - d7
2, 2, 2, 2, 2, 2, 2, 2, # d8 - df
0, 0, 0, 0, 0, 0, 0, 0, # e0 - e7
0, 0, 0, 0, 0, 0, 0, 0, # e8 - ef
0, 0, 0, 0, 0, 0, 0, 0, # f0 - f7
0, 0, 0, 0, 0, 0, 0, 5 # f8 - ff
)
EUCJP_ST = (
3, 4, 3, 5,MachineState.START,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,#08-0f
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.START,MachineState.ERROR,MachineState.START,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,#10-17
MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 3,MachineState.ERROR,#18-1f
3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.START,MachineState.START,MachineState.START#20-27
)
# fmt: on
EUCJP_CHAR_LEN_TABLE = (2, 2, 2, 3, 1, 0)
EUCJP_SM_MODEL: CodingStateMachineDict = {
"class_table": EUCJP_CLS,
"class_factor": 6,
"state_table": EUCJP_ST,
"char_len_table": EUCJP_CHAR_LEN_TABLE,
"name": "EUC-JP",
}
# EUC-KR
# fmt: off
EUCKR_CLS = (
1, 1, 1, 1, 1, 1, 1, 1, # 00 - 07
1, 1, 1, 1, 1, 1, 0, 0, # 08 - 0f
1, 1, 1, 1, 1, 1, 1, 1, # 10 - 17
1, 1, 1, 0, 1, 1, 1, 1, # 18 - 1f
1, 1, 1, 1, 1, 1, 1, 1, # 20 - 27
1, 1, 1, 1, 1, 1, 1, 1, # 28 - 2f
1, 1, 1, 1, 1, 1, 1, 1, # 30 - 37
1, 1, 1, 1, 1, 1, 1, 1, # 38 - 3f
1, 1, 1, 1, 1, 1, 1, 1, # 40 - 47
1, 1, 1, 1, 1, 1, 1, 1, # 48 - 4f
1, 1, 1, 1, 1, 1, 1, 1, # 50 - 57
1, 1, 1, 1, 1, 1, 1, 1, # 58 - 5f
1, 1, 1, 1, 1, 1, 1, 1, # 60 - 67
1, 1, 1, 1, 1, 1, 1, 1, # 68 - 6f
1, 1, 1, 1, 1, 1, 1, 1, # 70 - 77
1, 1, 1, 1, 1, 1, 1, 1, # 78 - 7f
0, 0, 0, 0, 0, 0, 0, 0, # 80 - 87
0, 0, 0, 0, 0, 0, 0, 0, # 88 - 8f
0, 0, 0, 0, 0, 0, 0, 0, # 90 - 97
0, 0, 0, 0, 0, 0, 0, 0, # 98 - 9f
0, 2, 2, 2, 2, 2, 2, 2, # a0 - a7
2, 2, 2, 2, 2, 3, 3, 3, # a8 - af
2, 2, 2, 2, 2, 2, 2, 2, # b0 - b7
2, 2, 2, 2, 2, 2, 2, 2, # b8 - bf
2, 2, 2, 2, 2, 2, 2, 2, # c0 - c7
2, 3, 2, 2, 2, 2, 2, 2, # c8 - cf
2, 2, 2, 2, 2, 2, 2, 2, # d0 - d7
2, 2, 2, 2, 2, 2, 2, 2, # d8 - df
2, 2, 2, 2, 2, 2, 2, 2, # e0 - e7
2, 2, 2, 2, 2, 2, 2, 2, # e8 - ef
2, 2, 2, 2, 2, 2, 2, 2, # f0 - f7
2, 2, 2, 2, 2, 2, 2, 0 # f8 - ff
)
EUCKR_ST = (
MachineState.ERROR,MachineState.START, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.START #08-0f
)
# fmt: on
EUCKR_CHAR_LEN_TABLE = (0, 1, 2, 0)
EUCKR_SM_MODEL: CodingStateMachineDict = {
"class_table": EUCKR_CLS,
"class_factor": 4,
"state_table": EUCKR_ST,
"char_len_table": EUCKR_CHAR_LEN_TABLE,
"name": "EUC-KR",
}
# JOHAB
# fmt: off
JOHAB_CLS = (
4,4,4,4,4,4,4,4, # 00 - 07
4,4,4,4,4,4,0,0, # 08 - 0f
4,4,4,4,4,4,4,4, # 10 - 17
4,4,4,0,4,4,4,4, # 18 - 1f
4,4,4,4,4,4,4,4, # 20 - 27
4,4,4,4,4,4,4,4, # 28 - 2f
4,3,3,3,3,3,3,3, # 30 - 37
3,3,3,3,3,3,3,3, # 38 - 3f
3,1,1,1,1,1,1,1, # 40 - 47
1,1,1,1,1,1,1,1, # 48 - 4f
1,1,1,1,1,1,1,1, # 50 - 57
1,1,1,1,1,1,1,1, # 58 - 5f
1,1,1,1,1,1,1,1, # 60 - 67
1,1,1,1,1,1,1,1, # 68 - 6f
1,1,1,1,1,1,1,1, # 70 - 77
1,1,1,1,1,1,1,2, # 78 - 7f
6,6,6,6,8,8,8,8, # 80 - 87
8,8,8,8,8,8,8,8, # 88 - 8f
8,7,7,7,7,7,7,7, # 90 - 97
7,7,7,7,7,7,7,7, # 98 - 9f
7,7,7,7,7,7,7,7, # a0 - a7
7,7,7,7,7,7,7,7, # a8 - af
7,7,7,7,7,7,7,7, # b0 - b7
7,7,7,7,7,7,7,7, # b8 - bf
7,7,7,7,7,7,7,7, # c0 - c7
7,7,7,7,7,7,7,7, # c8 - cf
7,7,7,7,5,5,5,5, # d0 - d7
5,9,9,9,9,9,9,5, # d8 - df
9,9,9,9,9,9,9,9, # e0 - e7
9,9,9,9,9,9,9,9, # e8 - ef
9,9,9,9,9,9,9,9, # f0 - f7
9,9,5,5,5,5,5,0 # f8 - ff
)
JOHAB_ST = (
# cls = 0 1 2 3 4 5 6 7 8 9
MachineState.ERROR ,MachineState.START ,MachineState.START ,MachineState.START ,MachineState.START ,MachineState.ERROR ,MachineState.ERROR ,3 ,3 ,4 , # MachineState.START
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME, # MachineState.ITS_ME
MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR ,MachineState.ERROR , # MachineState.ERROR
MachineState.ERROR ,MachineState.START ,MachineState.START ,MachineState.ERROR ,MachineState.ERROR ,MachineState.START ,MachineState.START ,MachineState.START ,MachineState.START ,MachineState.START , # 3
MachineState.ERROR ,MachineState.START ,MachineState.ERROR ,MachineState.START ,MachineState.ERROR ,MachineState.START ,MachineState.ERROR ,MachineState.START ,MachineState.ERROR ,MachineState.START , # 4
)
# fmt: on
JOHAB_CHAR_LEN_TABLE = (0, 1, 1, 1, 1, 0, 0, 2, 2, 2)
JOHAB_SM_MODEL: CodingStateMachineDict = {
"class_table": JOHAB_CLS,
"class_factor": 10,
"state_table": JOHAB_ST,
"char_len_table": JOHAB_CHAR_LEN_TABLE,
"name": "Johab",
}
# GB2312 - REMOVED
# GB2312 is a subset of GB18030. The GB18030 state machine and prober now
# correctly detect GB2312 content with the same confidence as the old GB2312
# prober (both use GB2312DistributionAnalysis). The LEGACY_MAP renames
# GB2312 → GB18030 for backward compatibility.
# Having both probers was redundant after fixing GB18030's char_len_table.
# GB18030
# GB18030 is a superset of GB2312 and GBK
# It supports:
# - 1-byte: ASCII (0x00-0x7F)
# - 2-byte: lead 0x81-0xFE, trail 0x40-0x7E or 0x80-0xFE (GBK/GB2312 compatible)
# - 4-byte: 0x81-0xFE, 0x30-0x39, 0x81-0xFE, 0x30-0x39 (GB18030 extension)
#
# Byte classes:
# 0: Invalid
# 1: ASCII (0x00-0x7F)
# 2: Digit 0x30-0x39 (can be 2nd or 4th byte in 4-byte sequence)
# 3: Valid 2-byte trail (0x40-0x7E)
# 4: Invalid byte 0x7F
# 5: Valid 2-byte trail and lead for 4-byte (0x80-0xFE)
# 6: Lead byte (0x81-0xFE) - can start 2-byte or 4-byte, or be 3rd byte in 4-byte
# fmt: off
GB18030_CLS = (
1, 1, 1, 1, 1, 1, 1, 1, # 00 - 07
1, 1, 1, 1, 1, 1, 0, 0, # 08 - 0f
1, 1, 1, 1, 1, 1, 1, 1, # 10 - 17
1, 1, 1, 0, 1, 1, 1, 1, # 18 - 1f
1, 1, 1, 1, 1, 1, 1, 1, # 20 - 27
1, 1, 1, 1, 1, 1, 1, 1, # 28 - 2f
2, 2, 2, 2, 2, 2, 2, 2, # 30 - 37
2, 2, 1, 1, 1, 1, 1, 1, # 38 - 3f
3, 3, 3, 3, 3, 3, 3, 3, # 40 - 47
3, 3, 3, 3, 3, 3, 3, 3, # 48 - 4f
3, 3, 3, 3, 3, 3, 3, 3, # 50 - 57
3, 3, 3, 3, 3, 3, 3, 3, # 58 - 5f
3, 3, 3, 3, 3, 3, 3, 3, # 60 - 67
3, 3, 3, 3, 3, 3, 3, 3, # 68 - 6f
3, 3, 3, 3, 3, 3, 3, 3, # 70 - 77
3, 3, 3, 3, 3, 3, 3, 4, # 78 - 7f
5, 6, 6, 6, 6, 6, 6, 6, # 80 - 87 0x80 can be trail byte (class 5)
6, 6, 6, 6, 6, 6, 6, 6, # 88 - 8f
6, 6, 6, 6, 6, 6, 6, 6, # 90 - 97
6, 6, 6, 6, 6, 6, 6, 6, # 98 - 9f
6, 6, 6, 6, 6, 6, 6, 6, # a0 - a7
6, 6, 6, 6, 6, 6, 6, 6, # a8 - af
6, 6, 6, 6, 6, 6, 6, 6, # b0 - b7
6, 6, 6, 6, 6, 6, 6, 6, # b8 - bf
6, 6, 6, 6, 6, 6, 6, 6, # c0 - c7
6, 6, 6, 6, 6, 6, 6, 6, # c8 - cf
6, 6, 6, 6, 6, 6, 6, 6, # d0 - d7
6, 6, 6, 6, 6, 6, 6, 6, # d8 - df
6, 6, 6, 6, 6, 6, 6, 6, # e0 - e7
6, 6, 6, 6, 6, 6, 6, 6, # e8 - ef
6, 6, 6, 6, 6, 6, 6, 6, # f0 - f7
6, 6, 6, 6, 6, 6, 6, 0 # f8 - ff 0xFF is invalid
)
# States:
# START (0): Initial state
# ERROR (1): Error state
# ITS_ME (2): Definitive match
# FIRST (3): After receiving lead byte (0x81-0xFE)
# SECOND_4BYTE (4): After digit as 2nd byte in potential 4-byte sequence
# THIRD_4BYTE (5): After 3rd byte (0x81-0xFE) in 4-byte sequence
GB18030_ST = (
# cls: 0 1 2 3 4 5 6
MachineState.ERROR, MachineState.START, MachineState.START, MachineState.START, MachineState.START,MachineState.ERROR, 3, # START (0)
MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, # ERROR (1)
MachineState.ITS_ME, MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME, # ITS_ME (2)
MachineState.ERROR, MachineState.ERROR, 4,MachineState.START, MachineState.ERROR,MachineState.START,MachineState.START, # FIRST (3): 0x81-0xFE completes 2-byte
MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR, MachineState.ERROR,MachineState.ERROR, 5, # SECOND_4BYTE (4): after 2nd digit
MachineState.ERROR, MachineState.ERROR, MachineState.START, MachineState.ERROR, MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, # THIRD_4BYTE (5): after 3rd byte
)
# fmt: on
# Character length table for distribution analysis
# Class 6 (lead byte) is marked as 2 bytes since that's the most common case
# (2-byte GB2312/GBK sequences). 4-byte sequences will be detected by the state
# machine but won't contribute to character distribution analysis.
GB18030_CHAR_LEN_TABLE = (0, 1, 1, 1, 1, 2, 2)
GB18030_SM_MODEL: CodingStateMachineDict = {
"class_table": GB18030_CLS,
"class_factor": 7,
"state_table": GB18030_ST,
"char_len_table": GB18030_CHAR_LEN_TABLE,
"name": "GB18030",
}
# Shift_JIS
# fmt: off
SJIS_CLS = (
1, 1, 1, 1, 1, 1, 1, 1, # 00 - 07
1, 1, 1, 1, 1, 1, 0, 0, # 08 - 0f
1, 1, 1, 1, 1, 1, 1, 1, # 10 - 17
1, 1, 1, 0, 1, 1, 1, 1, # 18 - 1f
1, 1, 1, 1, 1, 1, 1, 1, # 20 - 27
1, 1, 1, 1, 1, 1, 1, 1, # 28 - 2f
1, 1, 1, 1, 1, 1, 1, 1, # 30 - 37
1, 1, 1, 1, 1, 1, 1, 1, # 38 - 3f
2, 2, 2, 2, 2, 2, 2, 2, # 40 - 47
2, 2, 2, 2, 2, 2, 2, 2, # 48 - 4f
2, 2, 2, 2, 2, 2, 2, 2, # 50 - 57
2, 2, 2, 2, 2, 2, 2, 2, # 58 - 5f
2, 2, 2, 2, 2, 2, 2, 2, # 60 - 67
2, 2, 2, 2, 2, 2, 2, 2, # 68 - 6f
2, 2, 2, 2, 2, 2, 2, 2, # 70 - 77
2, 2, 2, 2, 2, 2, 2, 1, # 78 - 7f
3, 3, 3, 3, 3, 2, 2, 3, # 80 - 87
3, 3, 3, 3, 3, 3, 3, 3, # 88 - 8f
3, 3, 3, 3, 3, 3, 3, 3, # 90 - 97
3, 3, 3, 3, 3, 3, 3, 3, # 98 - 9f
#0xa0 is illegal in sjis encoding, but some pages does
#contain such byte. We need to be more error forgiven.
2, 2, 2, 2, 2, 2, 2, 2, # a0 - a7
2, 2, 2, 2, 2, 2, 2, 2, # a8 - af
2, 2, 2, 2, 2, 2, 2, 2, # b0 - b7
2, 2, 2, 2, 2, 2, 2, 2, # b8 - bf
2, 2, 2, 2, 2, 2, 2, 2, # c0 - c7
2, 2, 2, 2, 2, 2, 2, 2, # c8 - cf
2, 2, 2, 2, 2, 2, 2, 2, # d0 - d7
2, 2, 2, 2, 2, 2, 2, 2, # d8 - df
3, 3, 3, 3, 3, 3, 3, 3, # e0 - e7
3, 3, 3, 3, 3, 4, 4, 4, # e8 - ef
3, 3, 3, 3, 3, 3, 3, 3, # f0 - f7
3, 3, 3, 3, 3, 0, 0, 0, # f8 - ff
)
SJIS_ST = (
MachineState.ERROR,MachineState.START,MachineState.START, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,#08-0f
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.START,MachineState.START,MachineState.START #10-17
)
# fmt: on
SJIS_CHAR_LEN_TABLE = (0, 1, 1, 2, 0, 0)
SJIS_SM_MODEL: CodingStateMachineDict = {
"class_table": SJIS_CLS,
"class_factor": 6,
"state_table": SJIS_ST,
"char_len_table": SJIS_CHAR_LEN_TABLE,
"name": "Shift_JIS",
}
# UCS2-BE
# fmt: off
UCS2BE_CLS = (
0, 0, 0, 0, 0, 0, 0, 0, # 00 - 07
0, 0, 1, 0, 0, 2, 0, 0, # 08 - 0f
0, 0, 0, 0, 0, 0, 0, 0, # 10 - 17
0, 0, 0, 3, 0, 0, 0, 0, # 18 - 1f
0, 0, 0, 0, 0, 0, 0, 0, # 20 - 27
0, 3, 3, 3, 3, 3, 0, 0, # 28 - 2f
0, 0, 0, 0, 0, 0, 0, 0, # 30 - 37
0, 0, 0, 0, 0, 0, 0, 0, # 38 - 3f
0, 0, 0, 0, 0, 0, 0, 0, # 40 - 47
0, 0, 0, 0, 0, 0, 0, 0, # 48 - 4f
0, 0, 0, 0, 0, 0, 0, 0, # 50 - 57
0, 0, 0, 0, 0, 0, 0, 0, # 58 - 5f
0, 0, 0, 0, 0, 0, 0, 0, # 60 - 67
0, 0, 0, 0, 0, 0, 0, 0, # 68 - 6f
0, 0, 0, 0, 0, 0, 0, 0, # 70 - 77
0, 0, 0, 0, 0, 0, 0, 0, # 78 - 7f
0, 0, 0, 0, 0, 0, 0, 0, # 80 - 87
0, 0, 0, 0, 0, 0, 0, 0, # 88 - 8f
0, 0, 0, 0, 0, 0, 0, 0, # 90 - 97
0, 0, 0, 0, 0, 0, 0, 0, # 98 - 9f
0, 0, 0, 0, 0, 0, 0, 0, # a0 - a7
0, 0, 0, 0, 0, 0, 0, 0, # a8 - af
0, 0, 0, 0, 0, 0, 0, 0, # b0 - b7
0, 0, 0, 0, 0, 0, 0, 0, # b8 - bf
0, 0, 0, 0, 0, 0, 0, 0, # c0 - c7
0, 0, 0, 0, 0, 0, 0, 0, # c8 - cf
0, 0, 0, 0, 0, 0, 0, 0, # d0 - d7
0, 0, 0, 0, 0, 0, 0, 0, # d8 - df
0, 0, 0, 0, 0, 0, 0, 0, # e0 - e7
0, 0, 0, 0, 0, 0, 0, 0, # e8 - ef
0, 0, 0, 0, 0, 0, 0, 0, # f0 - f7
0, 0, 0, 0, 0, 0, 4, 5 # f8 - ff
)
UCS2BE_ST = (
5, 7, 7,MachineState.ERROR, 4, 3,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,#08-0f
MachineState.ITS_ME,MachineState.ITS_ME, 6, 6, 6, 6,MachineState.ERROR,MachineState.ERROR,#10-17
6, 6, 6, 6, 6,MachineState.ITS_ME, 6, 6,#18-1f
6, 6, 6, 6, 5, 7, 7,MachineState.ERROR,#20-27
5, 8, 6, 6,MachineState.ERROR, 6, 6, 6,#28-2f
6, 6, 6, 6,MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.START #30-37
)
# fmt: on
UCS2BE_CHAR_LEN_TABLE = (2, 2, 2, 0, 2, 2)
UCS2BE_SM_MODEL: CodingStateMachineDict = {
"class_table": UCS2BE_CLS,
"class_factor": 6,
"state_table": UCS2BE_ST,
"char_len_table": UCS2BE_CHAR_LEN_TABLE,
"name": "UTF-16BE",
}
# UCS2-LE
# fmt: off
UCS2LE_CLS = (
0, 0, 0, 0, 0, 0, 0, 0, # 00 - 07
0, 0, 1, 0, 0, 2, 0, 0, # 08 - 0f
0, 0, 0, 0, 0, 0, 0, 0, # 10 - 17
0, 0, 0, 3, 0, 0, 0, 0, # 18 - 1f
0, 0, 0, 0, 0, 0, 0, 0, # 20 - 27
0, 3, 3, 3, 3, 3, 0, 0, # 28 - 2f
0, 0, 0, 0, 0, 0, 0, 0, # 30 - 37
0, 0, 0, 0, 0, 0, 0, 0, # 38 - 3f
0, 0, 0, 0, 0, 0, 0, 0, # 40 - 47
0, 0, 0, 0, 0, 0, 0, 0, # 48 - 4f
0, 0, 0, 0, 0, 0, 0, 0, # 50 - 57
0, 0, 0, 0, 0, 0, 0, 0, # 58 - 5f
0, 0, 0, 0, 0, 0, 0, 0, # 60 - 67
0, 0, 0, 0, 0, 0, 0, 0, # 68 - 6f
0, 0, 0, 0, 0, 0, 0, 0, # 70 - 77
0, 0, 0, 0, 0, 0, 0, 0, # 78 - 7f
0, 0, 0, 0, 0, 0, 0, 0, # 80 - 87
0, 0, 0, 0, 0, 0, 0, 0, # 88 - 8f
0, 0, 0, 0, 0, 0, 0, 0, # 90 - 97
0, 0, 0, 0, 0, 0, 0, 0, # 98 - 9f
0, 0, 0, 0, 0, 0, 0, 0, # a0 - a7
0, 0, 0, 0, 0, 0, 0, 0, # a8 - af
0, 0, 0, 0, 0, 0, 0, 0, # b0 - b7
0, 0, 0, 0, 0, 0, 0, 0, # b8 - bf
0, 0, 0, 0, 0, 0, 0, 0, # c0 - c7
0, 0, 0, 0, 0, 0, 0, 0, # c8 - cf
0, 0, 0, 0, 0, 0, 0, 0, # d0 - d7
0, 0, 0, 0, 0, 0, 0, 0, # d8 - df
0, 0, 0, 0, 0, 0, 0, 0, # e0 - e7
0, 0, 0, 0, 0, 0, 0, 0, # e8 - ef
0, 0, 0, 0, 0, 0, 0, 0, # f0 - f7
0, 0, 0, 0, 0, 0, 4, 5 # f8 - ff
)
UCS2LE_ST = (
6, 6, 7, 6, 4, 3,MachineState.ERROR,MachineState.ERROR,#00-07
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,#08-0f
MachineState.ITS_ME,MachineState.ITS_ME, 5, 5, 5,MachineState.ERROR,MachineState.ITS_ME,MachineState.ERROR,#10-17
5, 5, 5,MachineState.ERROR, 5,MachineState.ERROR, 6, 6,#18-1f
7, 6, 8, 8, 5, 5, 5,MachineState.ERROR,#20-27
5, 5, 5,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 5, 5,#28-2f
5, 5, 5,MachineState.ERROR, 5,MachineState.ERROR,MachineState.START,MachineState.START #30-37
)
# fmt: on
UCS2LE_CHAR_LEN_TABLE = (2, 2, 2, 2, 2, 2)
UCS2LE_SM_MODEL: CodingStateMachineDict = {
"class_table": UCS2LE_CLS,
"class_factor": 6,
"state_table": UCS2LE_ST,
"char_len_table": UCS2LE_CHAR_LEN_TABLE,
"name": "UTF-16LE",
}
# UTF-8
# Adapted from Björn Höhrmann's DFA UTF-8 decoder
# See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
# Copyright (c) 2008-2009 Bjoern Hoehrmann
# fmt: off
UTF8_CLS = (
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 00-0f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 10-1f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 20-2f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 30-3f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 40-4f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 50-5f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 60-6f
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, # 70-7f
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, # 80-8f
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, # 90-9f
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, # a0-af
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, # b0-bf
8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, # c0-cf
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, # d0-df
10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 3, 3, # e0-ef
11, 6, 6, 6, 5, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, # f0-ff
)
# Höhrmann's DFA has states 0,12,24,36,48,60,72,84,96 which we map to states 0-8
# State 0=ACCEPT (START), State 1=REJECT (ERROR), States 2-8 are intermediate
UTF8_ST = (
MachineState.START,MachineState.ERROR, 3, 4, 6, 9, 8,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 5, 7, # state 0 (START)
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, # state 1 (ERROR)
MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME,MachineState.ITS_ME, # state 2 (ITS_ME)
MachineState.ERROR,MachineState.START,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.START,MachineState.ERROR,MachineState.START,MachineState.ERROR,MachineState.ERROR, # state 3
MachineState.ERROR, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 3,MachineState.ERROR, 3,MachineState.ERROR,MachineState.ERROR, # state 4
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, # state 5
MachineState.ERROR, 3,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 3,MachineState.ERROR,MachineState.ERROR, # state 6
MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 4,MachineState.ERROR, 4,MachineState.ERROR,MachineState.ERROR, # state 7
MachineState.ERROR, 4,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, 4,MachineState.ERROR, 4,MachineState.ERROR,MachineState.ERROR, # state 8
MachineState.ERROR, 4,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR,MachineState.ERROR, # state 9
)
# fmt: on
UTF8_CHAR_LEN_TABLE = (1, 1, 2, 3, 3, 4, 4, 1, 1, 1, 3, 4)
UTF8_SM_MODEL: CodingStateMachineDict = {
"class_table": UTF8_CLS,
"class_factor": 12,
"state_table": UTF8_ST,
"char_len_table": UTF8_CHAR_LEN_TABLE,
"name": "UTF-8",
}