"""File utility functions for Sphinx."""
import os
import posixpath
from typing import TYPE_CHECKING, Callable, Dict
from docutils.utils import relative_path
from sphinx.util.osutil import copyfile, ensuredir
from sphinx.util.typing import PathMatcher
if TYPE_CHECKING:
from sphinx.util.template import BaseRenderer
def copy_asset_file(source: str, destination: str,
context: Dict = None, renderer: "BaseRenderer" = None) -> None:
"""Copy an asset file to destination.
On copying, it expands the template variables if context argument is given and
the asset is a template file.
:param source: The path to source file
:param destination: The path to destination file or directory
:param context: The template variables. If not given, template files are simply copied
:param renderer: The template engine. If not given, SphinxRenderer is used by default
"""
if not os.path.exists(source):
return
if os.path.isdir(destination):
# Use source filename if destination points a directory
destination = os.path.join(destination, os.path.basename(source))
if source.lower().endswith('_t') and context is not None:
if renderer is None:
from sphinx.util.template import SphinxRenderer
renderer = SphinxRenderer()
with open(source, encoding='utf-8') as fsrc:
if destination.lower().endswith('_t'):
destination = destination[:-2]
with open(destination, 'w', encoding='utf-8') as fdst:
fdst.write(renderer.render_string(fsrc.read(), context))
else:
copyfile(source, destination)
def copy_asset(source: str, destination: str, excluded: PathMatcher = lambda path: False,
context: Dict = None, renderer: "BaseRenderer" = None,
onerror: Callable[[str, Exception], None] = None) -> None:
"""Copy asset files to destination recursively.
On copying, it expands the template variables if context argument is given and
the asset is a template file.
:param source: The path to source file or directory
:param destination: The path to destination directory
:param excluded: The matcher to determine the given path should be copied or not
:param context: The template variables. If not given, template files are simply copied
:param renderer: The template engine. If not given, SphinxRenderer is used by default
:param onerror: The error handler.
"""
if not os.path.exists(source):
return
if renderer is None:
from sphinx.util.template import SphinxRenderer
renderer = SphinxRenderer()
ensuredir(destination)
if os.path.isfile(source):
copy_asset_file(source, destination, context, renderer)
return
for root, dirs, files in os.walk(source, followlinks=True):
reldir = relative_path(source, root)
for dir in dirs[:]:
if excluded(posixpath.join(reldir, dir)):
dirs.remove(dir)
else:
ensuredir(posixpath.join(destination, reldir, dir))
for filename in files:
if not excluded(posixpath.join(reldir, filename)):
try:
copy_asset_file(posixpath.join(root, filename),
posixpath.join(destination, reldir),
context, renderer)
except Exception as exc:
if onerror:
onerror(posixpath.join(root, filename), exc)
else:
raise