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cpython/Tools/unicode/genmap_support.py at 3.9 · python-emscripten/cpython · GitHub
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unicode
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genmap_support.py
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cpython
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Tools
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unicode
/
genmap_support.py
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#
# genmap_support.py: Multibyte Codec Map Generator
#
# Original Author: Hye-Shik Chang <perky@FreeBSD.org>
# Modified Author: Dong-hee Na <donghee.na92@gmail.com>
#
class
BufferedFiller
:
def
__init__
(
self
,
column
=
78
):
self
.
column
=
column
self
.
buffered
=
[]
self
.
cline
=
[]
self
.
clen
=
0
self
.
count
=
0
def
write
(
self
,
*
data
):
for
s
in
data
:
if
len
(
s
)
>
self
.
column
:
raise
ValueError
(
"token is too long"
)
if
len
(
s
)
+
self
.
clen
>
self
.
column
:
self
.
flush
()
self
.
clen
+=
len
(
s
)
self
.
cline
.
append
(
s
)
self
.
count
+=
1
def
flush
(
self
):
if
not
self
.
cline
:
return
self
.
buffered
.
append
(
''
.
join
(
self
.
cline
))
self
.
clen
=
0
del
self
.
cline
[:]
def
printout
(
self
,
fp
):
self
.
flush
()
for
l
in
self
.
buffered
:
fp
.
write
(
f'
{
l
}
\n
'
)
del
self
.
buffered
[:]
def
__len__
(
self
):
return
self
.
count
class
DecodeMapWriter
:
filler_class
=
BufferedFiller
def
__init__
(
self
,
fp
,
prefix
,
decode_map
):
self
.
fp
=
fp
self
.
prefix
=
prefix
self
.
decode_map
=
decode_map
self
.
filler
=
self
.
filler_class
()
def
update_decode_map
(
self
,
c1range
,
c2range
,
onlymask
=
(),
wide
=
0
):
c2values
=
range
(
c2range
[
0
],
c2range
[
1
]
+
1
)
for
c1
in
range
(
c1range
[
0
],
c1range
[
1
]
+
1
):
if
c1
not
in
self
.
decode_map
or
(
onlymask
and
c1
not
in
onlymask
):
continue
c2map
=
self
.
decode_map
[
c1
]
rc2values
=
[
n
for
n
in
c2values
if
n
in
c2map
]
if
not
rc2values
:
continue
c2map
[
self
.
prefix
]
=
True
c2map
[
'min'
]
=
rc2values
[
0
]
c2map
[
'max'
]
=
rc2values
[
-
1
]
c2map
[
'midx'
]
=
len
(
self
.
filler
)
for
v
in
range
(
rc2values
[
0
],
rc2values
[
-
1
]
+
1
):
if
v
in
c2map
:
self
.
filler
.
write
(
'%d,'
%
c2map
[
v
])
else
:
self
.
filler
.
write
(
'U,'
)
def
generate
(
self
,
wide
=
False
):
if
not
wide
:
self
.
fp
.
write
(
f"static const ucs2_t __
{
self
.
prefix
}
_decmap[
{
len
(
self
.
filler
)
}
] = {{
\n
"
)
else
:
self
.
fp
.
write
(
f"static const Py_UCS4 __
{
self
.
prefix
}
_decmap[
{
len
(
self
.
filler
)
}
] = {{
\n
"
)
self
.
filler
.
printout
(
self
.
fp
)
self
.
fp
.
write
(
"};
\n
\n
"
)
if
not
wide
:
self
.
fp
.
write
(
f"static const struct dbcs_index
{
self
.
prefix
}
_decmap[256] = {{
\n
"
)
else
:
self
.
fp
.
write
(
f"static const struct widedbcs_index
{
self
.
prefix
}
_decmap[256] = {{
\n
"
)
for
i
in
range
(
256
):
if
i
in
self
.
decode_map
and
self
.
prefix
in
self
.
decode_map
[
i
]:
m
=
self
.
decode_map
prefix
=
self
.
prefix
else
:
self
.
filler
.
write
(
"{"
,
"0,"
,
"0,"
,
"0"
,
"},"
)
continue
self
.
filler
.
write
(
"{"
,
"__%s_decmap"
%
prefix
,
"+"
,
"%d"
%
m
[
i
][
'midx'
],
","
,
"%d,"
%
m
[
i
][
'min'
],
"%d"
%
m
[
i
][
'max'
],
"},"
)
self
.
filler
.
printout
(
self
.
fp
)
self
.
fp
.
write
(
"};
\n
\n
"
)
class
EncodeMapWriter
:
filler_class
=
BufferedFiller
elemtype
=
'DBCHAR'
indextype
=
'struct unim_index'
def
__init__
(
self
,
fp
,
prefix
,
encode_map
):
self
.
fp
=
fp
self
.
prefix
=
prefix
self
.
encode_map
=
encode_map
self
.
filler
=
self
.
filler_class
()
def
generate
(
self
):
self
.
buildmap
()
self
.
printmap
()
def
buildmap
(
self
):
for
c1
in
range
(
0
,
256
):
if
c1
not
in
self
.
encode_map
:
continue
c2map
=
self
.
encode_map
[
c1
]
rc2values
=
[
k
for
k
in
c2map
.
keys
()]
rc2values
.
sort
()
if
not
rc2values
:
continue
c2map
[
self
.
prefix
]
=
True
c2map
[
'min'
]
=
rc2values
[
0
]
c2map
[
'max'
]
=
rc2values
[
-
1
]
c2map
[
'midx'
]
=
len
(
self
.
filler
)
for
v
in
range
(
rc2values
[
0
],
rc2values
[
-
1
]
+
1
):
if
v
not
in
c2map
:
self
.
write_nochar
()
elif
isinstance
(
c2map
[
v
],
int
):
self
.
write_char
(
c2map
[
v
])
elif
isinstance
(
c2map
[
v
],
tuple
):
self
.
write_multic
(
c2map
[
v
])
else
:
raise
ValueError
def
write_nochar
(
self
):
self
.
filler
.
write
(
'N,'
)
def
write_multic
(
self
,
point
):
self
.
filler
.
write
(
'M,'
)
def
write_char
(
self
,
point
):
self
.
filler
.
write
(
str
(
point
)
+
','
)
def
printmap
(
self
):
self
.
fp
.
write
(
f"static const
{
self
.
elemtype
}
__
{
self
.
prefix
}
_encmap[
{
len
(
self
.
filler
)
}
] = {{
\n
"
)
self
.
filler
.
printout
(
self
.
fp
)
self
.
fp
.
write
(
"};
\n
\n
"
)
self
.
fp
.
write
(
f"static const
{
self
.
indextype
}
{
self
.
prefix
}
_encmap[256] = {{
\n
"
)
for
i
in
range
(
256
):
if
i
in
self
.
encode_map
and
self
.
prefix
in
self
.
encode_map
[
i
]:
self
.
filler
.
write
(
"{"
,
"__%s_encmap"
%
self
.
prefix
,
"+"
,
"%d"
%
self
.
encode_map
[
i
][
'midx'
],
","
,
"%d,"
%
self
.
encode_map
[
i
][
'min'
],
"%d"
%
self
.
encode_map
[
i
][
'max'
],
"},"
)
else
:
self
.
filler
.
write
(
"{"
,
"0,"
,
"0,"
,
"0"
,
"},"
)
continue
self
.
filler
.
printout
(
self
.
fp
)
self
.
fp
.
write
(
"};
\n
\n
"
)
def
open_mapping_file
(
path
,
source
):
try
:
f
=
open
(
path
)
except
IOError
:
raise
SystemExit
(
f'
{
source
}
is needed'
)
return
f
def
print_autogen
(
fo
,
source
):
fo
.
write
(
f'// AUTO-GENERATED FILE FROM
{
source
}
: DO NOT EDIT
\n
'
)
def
loadmap
(
fo
,
natcol
=
0
,
unicol
=
1
,
sbcs
=
0
):
print
(
"Loading from"
,
fo
)
fo
.
seek
(
0
,
0
)
decmap
=
{}
for
line
in
fo
:
line
=
line
.
split
(
'#'
,
1
)[
0
].
strip
()
if
not
line
or
len
(
line
.
split
())
<
2
:
continue
row
=
[
eval
(
e
)
for
e
in
line
.
split
()]
loc
,
uni
=
row
[
natcol
],
row
[
unicol
]
if
loc
>=
0x100
or
sbcs
:
decmap
.
setdefault
((
loc
>>
8
), {})
decmap
[(
loc
>>
8
)][(
loc
&
0xff
)]
=
uni
return
decmap
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