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RustPython/scripts/update_lib/cmd_migrate.py at main · RustPython/RustPython · GitHub
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scripts
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update_lib
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cmd_migrate.py
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RustPython
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scripts
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update_lib
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cmd_migrate.py
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#!/usr/bin/env python
"""
Migrate test file(s) from CPython, preserving RustPython markers.
Usage:
python scripts/update_lib migrate cpython/Lib/test/test_foo.py
This will:
1. Extract patches from Lib/test/test_foo.py (if exists)
2. Apply them to cpython/Lib/test/test_foo.py
3. Write result to Lib/test/test_foo.py
"""
import
argparse
import
pathlib
import
shutil
import
sys
sys
.
path
.
insert
(
0
,
str
(
pathlib
.
Path
(
__file__
).
parent
.
parent
))
from
update_lib
.
file_utils
import
parse_lib_path
def
patch_single_content
(
src_path
:
pathlib
.
Path
,
lib_path
:
pathlib
.
Path
,
)
->
str
:
"""
Patch content without writing to disk.
Args:
src_path: Source file path (e.g., cpython/Lib/test/foo.py)
lib_path: Lib path to extract patches from (e.g., Lib/test/foo.py)
Returns:
The patched content.
"""
from
update_lib
import
apply_patches
,
extract_patches
# Extract patches from existing file (if exists)
if
lib_path
.
exists
():
patches
=
extract_patches
(
lib_path
.
read_text
(
encoding
=
"utf-8"
))
else
:
patches
=
{}
# Apply patches to source content
src_content
=
src_path
.
read_text
(
encoding
=
"utf-8"
)
return
apply_patches
(
src_content
,
patches
)
def
patch_file
(
src_path
:
pathlib
.
Path
,
lib_path
:
pathlib
.
Path
|
None
=
None
,
verbose
:
bool
=
True
,
)
->
None
:
"""
Patch a single file from source to lib.
Args:
src_path: Source file path (e.g., cpython/Lib/test/foo.py)
lib_path: Target lib path. If None, derived from src_path.
verbose: Print progress messages
"""
if
lib_path
is
None
:
lib_path
=
parse_lib_path
(
src_path
)
if
lib_path
.
exists
():
if
verbose
:
print
(
f"Patching:
{
src_path
}
->
{
lib_path
}
"
)
content
=
patch_single_content
(
src_path
,
lib_path
)
else
:
if
verbose
:
print
(
f"Copying:
{
src_path
}
->
{
lib_path
}
"
)
content
=
src_path
.
read_text
(
encoding
=
"utf-8"
)
lib_path
.
parent
.
mkdir
(
parents
=
True
,
exist_ok
=
True
)
lib_path
.
write_text
(
content
,
encoding
=
"utf-8"
)
def
patch_directory
(
src_dir
:
pathlib
.
Path
,
lib_dir
:
pathlib
.
Path
|
None
=
None
,
verbose
:
bool
=
True
,
)
->
None
:
"""
Patch all files in a directory from source to lib.
Args:
src_dir: Source directory path (e.g., cpython/Lib/test/test_foo/)
lib_dir: Target lib directory. If None, derived from src_dir.
verbose: Print progress messages
"""
if
lib_dir
is
None
:
lib_dir
=
parse_lib_path
(
src_dir
)
src_files
=
sorted
(
f
for
f
in
src_dir
.
glob
(
"**/*"
)
if
f
.
is_file
())
for
src_file
in
src_files
:
rel_path
=
src_file
.
relative_to
(
src_dir
)
lib_file
=
lib_dir
/
rel_path
if
src_file
.
suffix
==
".py"
:
if
lib_file
.
exists
():
if
verbose
:
print
(
f"Patching:
{
src_file
}
->
{
lib_file
}
"
)
content
=
patch_single_content
(
src_file
,
lib_file
)
else
:
if
verbose
:
print
(
f"Copying:
{
src_file
}
->
{
lib_file
}
"
)
content
=
src_file
.
read_text
(
encoding
=
"utf-8"
)
lib_file
.
parent
.
mkdir
(
parents
=
True
,
exist_ok
=
True
)
lib_file
.
write_text
(
content
,
encoding
=
"utf-8"
)
else
:
if
verbose
:
print
(
f"Copying:
{
src_file
}
->
{
lib_file
}
"
)
lib_file
.
parent
.
mkdir
(
parents
=
True
,
exist_ok
=
True
)
shutil
.
copy2
(
src_file
,
lib_file
)
def
main
(
argv
:
list
[
str
]
|
None
=
None
)
->
int
:
parser
=
argparse
.
ArgumentParser
(
description
=
__doc__
,
formatter_class
=
argparse
.
RawDescriptionHelpFormatter
,
)
parser
.
add_argument
(
"path"
,
type
=
pathlib
.
Path
,
help
=
"Source path containing /Lib/ (file or directory)"
,
)
args
=
parser
.
parse_args
(
argv
)
try
:
if
args
.
path
.
is_dir
():
patch_directory
(
args
.
path
)
else
:
patch_file
(
args
.
path
)
return
0
except
ValueError
as
e
:
print
(
f"Error:
{
e
}
"
,
file
=
sys
.
stderr
)
return
1
except
FileNotFoundError
as
e
:
print
(
f"Error:
{
e
}
"
,
file
=
sys
.
stderr
)
return
1
if
__name__
==
"__main__"
:
sys
.
exit
(
main
())
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