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[Docutils-checkins] SF.net SVN: docutils:[9996] trunk/docutils
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From: <mi...@us...> - 2024-12-04 13:33:24
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Revision: 9996
http://sourceforge.net/p/docutils/code/9996
Author: milde
Date: 2024-12-04 13:33:06 +0000 (Wed, 04 Dec 2024)
Log Message:
-----------
Provide a generic Translator base class for writers.
Move the `uri2path()` method there.
Use it in LaTeX and HTML writers to reduce code duplication and
unify the handling of image URI references.
Using `uri2path()` in the ODT writer would be a backwards-incompatible
change: The ODT writer expects relative image paths to be relative to
the **source** directory. Announce upcoming change for the ODT writer.
Modified Paths:
--------------
trunk/docutils/RELEASE-NOTES.rst
trunk/docutils/docutils/writers/__init__.py
trunk/docutils/docutils/writers/_html_base.py
trunk/docutils/docutils/writers/latex2e/__init__.py
Modified: trunk/docutils/RELEASE-NOTES.rst
===================================================================
--- trunk/docutils/RELEASE-NOTES.rst 2024-12-04 13:32:53 UTC (rev 9995)
+++ trunk/docutils/RELEASE-NOTES.rst 2024-12-04 13:33:06 UTC (rev 9996)
@@ -124,6 +124,12 @@
__ docs/user/latex.html#length-units
+* "odt" writer:
+
+ - Align adjustment of relative image paths with the behaviour of HTML
+ and LaTeX writers: assume them relative to the *output* directory (as
+ required for image references in HTML), not the *source* directory.
+
Removals
--------
Modified: trunk/docutils/docutils/writers/__init__.py
===================================================================
--- trunk/docutils/docutils/writers/__init__.py 2024-12-04 13:32:53 UTC (rev 9995)
+++ trunk/docutils/docutils/writers/__init__.py 2024-12-04 13:33:06 UTC (rev 9996)
@@ -11,18 +11,21 @@
__docformat__ = 'reStructuredText'
import importlib
+import sys
+import urllib
+from pathlib import Path
from typing import TYPE_CHECKING
import docutils
-from docutils import languages, Component
+from docutils import Component, languages, nodes, utils
from docutils.transforms import universal
if TYPE_CHECKING:
from typing import Any, Final
- from docutils import nodes
from docutils.io import Output
from docutils.languages import LanguageModule
+ from docutils.nodes import StrPath
from docutils.transforms import Transform
@@ -137,7 +140,108 @@
return Component.get_transforms(self)
-WRITER_ALIASES = {'html': 'html4css1', # may change to html5 some day
+class DoctreeTranslator(nodes.NodeVisitor):
+ """
+ Generic Docutils document tree translator base class.
+
+ Adds auxiliary methods and attributes that are used by several
+ Docutils writers to the `nodes.NodeVisitor` abstract superclass.
+ """
+
+ def __init__(self, document) -> None:
+ super().__init__(document)
+ self.settings = document.settings
+
+ def uri2path(self, uri: str, output_path: StrPath|None = None) -> Path:
+ """Return filesystem path corresponding to a `URI reference`__.
+
+ The `root_prefix`__ setting` is applied to URI references starting
+ with "/" (but not to absolute Windows paths or "file" URIs).
+
+ If `output_path` (defaults to the `output_path`__ setting) is
+ not empty, relative paths are adjusted.
+ (To work in the output document, URI references with relative path
+ relate to the output directory. For access by the writer, paths
+ must be relative to the working directory.)
+
+ Use case:
+ The <image> element refers to the image via a "URI reference".
+ The corresponding filesystem path is required to read the
+ image size from the file or to embed the image in the output.
+
+ A filesystem path is also expected by the "LaTeX" output format
+ (with relative paths unchanged, relating to the output directory,
+ set `output_path` to the empty string).
+
+ Provisional: the function's location, interface and behaviour
+ may change without advance warning.
+
+ __ https://www.rfc-editor.org/rfc/rfc3986.html#section-4.1
+ __ https://docutils.sourceforge.io/docs/user/config.html#root-prefix
+ __ https://docutils.sourceforge.io/docs/user/config.html#output-path
+ """
+ if output_path is None:
+ output_path = self.settings.output_path
+ if uri.startswith('file:'):
+ return Path.from_uri(uri)
+ uri_parts = urllib.parse.urlsplit(uri)
+ if uri_parts.scheme != '':
+ raise ValueError(f'Cannot get file path corresponding to {uri}.')
+ # extract and adjust path from "relative URI reference"
+ path = urllib.parse.unquote(uri_parts.path)
+ if self.settings.root_prefix and path.startswith('/'):
+ return Path(self.settings.root_prefix) / path.removeprefix('/')
+ path = Path(path)
+ # adjust relative paths (but not "d:/foo" or similar)
+ if output_path and not path.is_absolute():
+ dest_dir = Path(output_path).parent.resolve()
+ path = Path(utils.relative_path(None, dest_dir/path))
+ # TODO: support paths relative to the *source* directory?
+ # source_path, line = utils.get_source_line(node)
+ # if source_path:
+ # source_dir = Path(source_path).parent.resolve()
+ # path = Path(utils.relative_path(None, source_dir/path)
+ return path
+
+
+if sys.version_info[:2] < (3, 13):
+ # Backport `pathlib.Path.from_uri()` class method:
+ import pathlib
+
+ # subclassing from Path must consider the OS flavour
+ # https://stackoverflow.com/questions/29850801/subclass-pathlib-path-fails
+ class Path(type(pathlib.Path())): # noqa F811 (redefinition of 'Path')
+ """`pathlib.Path` with `from_uri()` classmethod backported from 3.13.
+ """
+
+ # `from_uri()` is copied from
+ # https://github.com/python/cpython/blob/3.13/Lib/pathlib/_local.py
+ # with minor adaptions
+ @classmethod
+ def from_uri(cls, uri):
+ """Return a new path from the given 'file' URI."""
+ if not uri.startswith('file:'):
+ raise ValueError(f"URI does not start with 'file:': {uri!r}")
+ path = uri[5:]
+ if path[:3] == '///':
+ # Remove empty authority
+ path = path[2:]
+ elif path[:12] == '//localhost/':
+ # Remove 'localhost' authority
+ path = path[11:]
+ if path[:3] == '///' or (path[:1] == '/' and path[2:3] in ':|'):
+ # Remove slash before DOS device/UNC path
+ path = path[1:]
+ if path[1:2] == '|':
+ # Replace bar with colon in DOS drive
+ path = path[:1] + ':' + path[2:]
+ path = cls(urllib.parse.unquote(path))
+ if not path.is_absolute():
+ raise ValueError(f"URI is not absolute: {uri!r}")
+ return path
+
+
+WRITER_ALIASES = {'html': 'html4css1', # will change to html5 in Docutils 2.0
'html4': 'html4css1',
'xhtml10': 'html4css1',
'html5': 'html5_polyglot',
Modified: trunk/docutils/docutils/writers/_html_base.py
===================================================================
--- trunk/docutils/docutils/writers/_html_base.py 2024-12-04 13:32:53 UTC (rev 9995)
+++ trunk/docutils/docutils/writers/_html_base.py 2024-12-04 13:33:06 UTC (rev 9996)
@@ -25,8 +25,6 @@
import os
import os.path
import re
-import sys
-import urllib.parse
import warnings
import xml.etree.ElementTree as ET
from pathlib import Path
@@ -186,13 +184,13 @@
self.parts[part] = ''.join(getattr(self, part))
-class HTMLTranslator(nodes.NodeVisitor):
+class HTMLTranslator(writers.DoctreeTranslator):
"""
Generic Docutils to HTML translator.
See the `html4css1` and `html5_polyglot` writers for full featured
- HTML writers.
+ HTML translators.
.. IMPORTANT::
The `visit_*` and `depart_*` methods use a
@@ -292,9 +290,9 @@
"""MIME types supported by the HTML5 <video> element."""
def __init__(self, document) -> None:
- nodes.NodeVisitor.__init__(self, document)
+ super().__init__(document)
# process settings
- self.settings = settings = document.settings
+ settings = self.settings
self.language = languages.get_language(
settings.language_code, document.reporter)
self.initial_header_level = int(settings.initial_header_level)
@@ -626,48 +624,6 @@
return
child['classes'].append(class_)
- def uri2path(self, uri: str) -> Path:
- """Return filesystem path corresponding to a `URI reference`__.
-
- The `root_prefix`__ setting` is applied to URI references starting
- with "/" (but not to absolute Windows paths or "file" URIs).
-
- If the `output_path`__ setting is not empty, relative paths are
- adjusted. (To work in the output document, URI references with
- relative path relate to the output directory. For access by the
- writer, paths must be relative to the working directory.)
-
- Use case:
- The <image> element refers to the image via a "URI reference".
- The corresponding filesystem path is required to read the
- image size from the file or to embed the image in the output.
-
- A filesystem path is also expected by the "LaTeX" output format
- (with relative paths unchanged, relating to the output directory).
-
- Provisional: the function's location, interface and behaviour
- may change without advance warning.
-
- __ https://www.rfc-editor.org/rfc/rfc3986.html#section-4.1
- __ https://docutils.sourceforge.io/docs/user/config.html#root-prefix
- __ https://docutils.sourceforge.io/docs/user/config.html#output-path
- """
- if uri.startswith('file:'):
- return Path.from_uri(uri)
- uri_parts = urllib.parse.urlsplit(uri)
- if uri_parts.scheme != '':
- raise ValueError(f'Cannot get file path corresponding to {uri}.')
- # extract and adjust path from "relative URI reference"
- path = urllib.parse.unquote(uri_parts.path)
- if self.settings.root_prefix and path.startswith('/'):
- return Path(self.settings.root_prefix) / path.removeprefix('/')
- path = Path(path)
- if self.settings.output_path and not path.is_absolute():
- # rewrite relative paths, but not "d:/foo" or similar
- dest_dir = Path(self.settings.output_path).parent.resolve()
- path = Path(utils.relative_path(None, dest_dir/path))
- return path
-
def visit_Text(self, node) -> None:
text = node.astext()
encoded = self.encode(text)
@@ -1920,40 +1876,3 @@
visit_substitution_definition = ignore_node
visit_target = ignore_node
visit_pending = ignore_node
-
-
-# Backport `pathlib.Path.from_uri()` class method:
-
-if sys.version_info[:2] < (3, 13):
- import pathlib
-
- # subclassing from Path must consider the OS flavour
- # https://stackoverflow.com/questions/29850801/subclass-pathlib-path-fails
- class Path(type(pathlib.Path())): # noqa F811 (redefinition of 'Path')
- """`pathlib.Path` with `from_uri()` classmethod backported from 3.13.
- """
- # copied from
- # https://github.com/python/cpython/blob/3.13/Lib/pathlib/_local.py
- # with minor adaptions
- @classmethod
- def from_uri(cls, uri):
- """Return a new path from the given 'file' URI."""
- if not uri.startswith('file:'):
- raise ValueError(f"URI does not start with 'file:': {uri!r}")
- path = uri[5:]
- if path[:3] == '///':
- # Remove empty authority
- path = path[2:]
- elif path[:12] == '//localhost/':
- # Remove 'localhost' authority
- path = path[11:]
- if path[:3] == '///' or (path[:1] == '/' and path[2:3] in ':|'):
- # Remove slash before DOS device/UNC path
- path = path[1:]
- if path[1:2] == '|':
- # Replace bar with colon in DOS drive
- path = path[:1] + ':' + path[2:]
- path = cls(urllib.parse.unquote(path))
- if not path.is_absolute():
- raise ValueError(f"URI is not absolute: {uri!r}")
- return path
Modified: trunk/docutils/docutils/writers/latex2e/__init__.py
===================================================================
--- trunk/docutils/docutils/writers/latex2e/__init__.py 2024-12-04 13:32:53 UTC (rev 9995)
+++ trunk/docutils/docutils/writers/latex2e/__init__.py 2024-12-04 13:33:06 UTC (rev 9996)
@@ -14,7 +14,6 @@
import re
import string
-import urllib.parse
import warnings
from pathlib import Path
@@ -1130,7 +1129,7 @@
return False
-class LaTeXTranslator(nodes.NodeVisitor):
+class LaTeXTranslator(writers.DoctreeTranslator):
"""
Generate code for 8-bit LaTeX from a Docutils document tree.
@@ -1187,7 +1186,7 @@
# Settings
# ~~~~~~~~
- self.settings = settings = document.settings
+ settings = self.settings
# warn of deprecated settings and changing defaults:
if settings.use_latex_citations is None and not settings.use_bibtex:
settings.use_latex_citations = False
@@ -2437,8 +2436,8 @@
def visit_image(self, node) -> None:
self.requirements['graphicx'] = self.graphicx_package
attrs = node.attributes
- # image URI may use %-encoding
- imagepath = urllib.parse.unquote(attrs['uri'])
+ # convert image URI to filesystem path, do not adjust relative path:
+ imagepath = self.uri2path(attrs['uri'], output_path='')
# alignment defaults:
if 'align' not in attrs:
# Set default align of image in a figure to 'center'
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