Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Keep consistent line endings #201

Merged
merged 1 commit into from
Jul 7, 2022
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
43 changes: 43 additions & 0 deletions tests/test_toml_file.py
Original file line number Diff line number Diff line change
Expand Up @@ -62,3 +62,46 @@ def test_mixed_eol(tmpdir):

with open(toml_path, "rb") as f:
assert f.read() == b"a = 1\r\nrb = 2\n"


def test_consistent_eol(tmpdir):
toml_path = str(tmpdir / "pyproject.toml")
with open(toml_path, "wb+") as f:
f.write(b"a = 1\r\nb = 2\r\n")

f = TOMLFile(toml_path)
content = f.read()
content["c"] = 3
f.write(content)

with open(toml_path, "rb") as f:
assert f.read() == b"a = 1\r\nb = 2\r\nc = 3\r\n"


def test_consistent_eol_2(tmpdir):
toml_path = str(tmpdir / "pyproject.toml")
with open(toml_path, "wb+") as f:
f.write(b"a = 1\nb = 2\n")

f = TOMLFile(toml_path)
content = f.read()
content["c"] = 3
content["c"].trivia.trail = "\r\n"
f.write(content)

with open(toml_path, "rb") as f:
assert f.read() == b"a = 1\nb = 2\nc = 3\n"


def test_default_eol_is_os_linesep(tmpdir):
toml_path = str(tmpdir / "pyproject.toml")
f = TOMLFile(toml_path)
content = TOMLDocument()
content.append("a", 1)
content["a"].trivia.trail = "\n"
content.append("b", 2)
content["b"].trivia.trail = "\r\n"
f.write(content)
linesep = os.linesep.encode()
with open(toml_path, "rb") as f:
assert f.read() == b"a = 1" + linesep + b"b = 2" + linesep
29 changes: 27 additions & 2 deletions tomlkit/toml_file.py
Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
import os
import re

from .api import loads
from .toml_document import TOMLDocument

Expand All @@ -11,13 +14,35 @@ class TOMLFile:

def __init__(self, path: str) -> None:
self._path = path
self._linesep = os.linesep

def read(self) -> TOMLDocument:
"""Read the file content as a :class:`tomlkit.toml_document.TOMLDocument`."""
with open(self._path, encoding="utf-8", newline="") as f:
return loads(f.read())
content = f.read()

# check if consistent line endings
num_newline = content.count("\n")
if num_newline > 0:
num_win_eol = content.count("\r\n")
if num_win_eol == num_newline:
self._linesep = "\r\n"
elif num_win_eol == 0:
self._linesep = "\n"
else:
self._linesep = "mixed"

return loads(content)

def write(self, data: TOMLDocument) -> None:
"""Write the TOMLDocument to the file."""
content = data.as_string()

# apply linesep
if self._linesep == "\n":
content = content.replace("\r\n", "\n")
elif self._linesep == "\r\n":
content = re.sub(r"(?<!\r)\n", "\r\n", content)

with open(self._path, "w", encoding="utf-8", newline="") as f:
f.write(data.as_string())
f.write(content)