exercises/tools/check-exercises.py
Manlio Perillo 6b17a18893 Ensure the exercises use the canonical format
Add the check-exercises.py tool in the new tools directory.  It is used
to check that the exercises are correctly formatted, printing on stderr
the invalid ones and the diff in the unified format.

Update the exercises that don't use the canonical zig fmt format.

Update some patches that cause the generated zig file to be incorrectly
formatted.
2023-04-18 18:16:19 +02:00

97 lines
2.2 KiB
Python
Executable file

#!/usr/bin/env python
import difflib
import io
import os
import os.path
import subprocess
import sys
IGNORE = subprocess.DEVNULL
PIPE = subprocess.PIPE
EXERCISES_PATH = "exercises"
HEALED_PATH = "patches/healed"
PATCHES_PATH = "patches/patches"
# Heals all the exercises.
def heal():
maketree(HEALED_PATH)
with os.scandir(EXERCISES_PATH) as it:
for entry in it:
name = entry.name
original_path = entry.path
patch_path = os.path.join(PATCHES_PATH, patch_name(name))
output_path = os.path.join(HEALED_PATH, name)
patch(original_path, patch_path, output_path)
# Yields all the healed exercises that are not correctly formatted.
def check_healed():
term = subprocess.run(
["zig", "fmt", "--check", HEALED_PATH], stdout=PIPE, text=True
)
if term.stdout == "" and term.returncode != 0:
term.check_returncode()
stream = io.StringIO(term.stdout)
for line in stream:
yield line.strip()
def main():
heal()
# Show the unified diff between the original example and the correctly
# formatted one.
for i, original in enumerate(check_healed()):
if i > 0:
print()
name = os.path.basename(original)
print(f"checking exercise {name}...\n")
from_file = open(original)
to_file = zig_fmt_file(original)
diff = difflib.unified_diff(
from_file.readlines(), to_file.readlines(), name, name + "-fmt"
)
sys.stderr.writelines(diff)
def maketree(path):
return os.makedirs(path, exist_ok=True)
# Returns path with the patch extension.
def patch_name(path):
name, _ = os.path.splitext(path)
return name + ".patch"
# Applies patch to original, and write the file to output.
def patch(original, patch, output):
subprocess.run(
["patch", "-i", patch, "-o", output, original], stdout=IGNORE, check=True
)
# Formats the Zig file at path, and returns the possibly reformatted file as a
# file object.
def zig_fmt_file(path):
with open(path) as stdin:
term = subprocess.run(
["zig", "fmt", "--stdin"], stdin=stdin, stdout=PIPE, check=True, text=True
)
return io.StringIO(term.stdout)
main()