Merge pull request #5910 from tk0miya/refactor_epub

Refactor epub builder: deprecate arguments of build_* method.

CHANGES

@@ -58,6 +58,10 @@ Deprecated
 
 * Support for evaluating Python 2 syntax is deprecated. This includes
   configuration files which should be converted to Python 3.
+* The arguments of ``EpubBuilder.build_mimetype()``,
+  ``EpubBuilder.build_container()``, ``EpubBuilder.bulid_content()``,
+  ``EpubBuilder.build_toc()`` and ``EpubBuilder.build_epub()``
+* The arguments of ``Epub3Builder.build_navigation_doc()``
 * The ``encoding`` argument of ``autodoc.Documenter.get_doc()``,
   ``autodoc.DocstringSignatureMixin.get_doc()``,
   ``autodoc.DocstringSignatureMixin._find_signature()``, and

doc/extdev/index.rst

@@ -242,6 +242,18 @@ The following is a list of deprecated interfaces.
      - 4.0
      - N/A
 
+   * - arguments of ``EpubBuilder.build_mimetype()``,
+       ``EpubBuilder.build_container()``, ``EpubBuilder.build_content()``,
+       ``EpubBuilder.build_toc()`` and ``EpubBuilder.build_epub()``
+     - 2.0
+     - 4.0
+     - N/A
+
+   * - arguments of ``Epub3Builder.build_navigation_doc()``
+     - 2.0
+     - 4.0
+     - N/A
+
    * - ``nodetype`` argument of
        ``sphinx.search.WordCollector.is_meta_keywords()``
      - 2.0

sphinx/builders/_epub_base.py

@@ -10,6 +10,7 @@
 
 import os
 import re
+import warnings
 from collections import namedtuple
 from os import path
 from zipfile import ZIP_DEFLATED, ZIP_STORED, ZipFile
@@ -19,6 +20,7 @@ from docutils.utils import smartquotes
 
 from sphinx import addnodes
 from sphinx.builders.html import BuildInfo, StandaloneHTMLBuilder
+from sphinx.deprecation import RemovedInSphinx40Warning
 from sphinx.locale import __
 from sphinx.util import logging
 from sphinx.util import status_iterator
@@ -470,16 +472,28 @@ class EpubBuilder(StandaloneHTMLBuilder):
         addctx['doctype'] = self.doctype
         super().handle_page(pagename, addctx, templatename, outfilename, event_arg)
 
-    def build_mimetype(self, outdir, outname):
+    def build_mimetype(self, outdir=None, outname='mimetype'):
         # type: (str, str) -> None
         """Write the metainfo file mimetype."""
+        if outdir:
+            warnings.warn('The arguments of EpubBuilder.build_mimetype() is deprecated.',
+                          RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+
         logger.info(__('writing %s file...'), outname)
         copy_asset_file(path.join(self.template_dir, 'mimetype'),
                         path.join(outdir, outname))
 
-    def build_container(self, outdir, outname):
+    def build_container(self, outdir=None, outname='META-INF/container.xml'):
         # type: (str, str) -> None
         """Write the metainfo file META-INF/container.xml."""
+        if outdir:
+            warnings.warn('The arguments of EpubBuilder.build_container() is deprecated.',
+                          RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+
         logger.info(__('writing %s file...'), outname)
         filename = path.join(outdir, outname)
         ensuredir(path.dirname(filename))
@@ -505,11 +519,17 @@ class EpubBuilder(StandaloneHTMLBuilder):
         metadata['guides'] = []
         return metadata
 
-    def build_content(self, outdir, outname):
+    def build_content(self, outdir=None, outname='content.opf'):
         # type: (str, str) -> None
         """Write the metainfo file content.opf It contains bibliographic data,
         a file list and the spine (the reading order).
         """
+        if outdir:
+            warnings.warn('The arguments of EpubBuilder.build_content() is deprecated.',
+                          RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+
         logger.info(__('writing %s file...'), outname)
         metadata = self.content_metadata()
 
@@ -686,9 +706,15 @@ class EpubBuilder(StandaloneHTMLBuilder):
         metadata['navpoints'] = navpoints
         return metadata
 
-    def build_toc(self, outdir, outname):
+    def build_toc(self, outdir=None, outname='toc.ncx'):
         # type: (str, str) -> None
         """Write the metainfo file toc.ncx."""
+        if outdir:
+            warnings.warn('The arguments of EpubBuilder.build_toc() is deprecated.',
+                          RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+
         logger.info(__('writing %s file...'), outname)
 
         if self.config.epub_tocscope == 'default':
@@ -707,13 +733,20 @@ class EpubBuilder(StandaloneHTMLBuilder):
                         path.join(outdir, outname),
                         self.toc_metadata(level, navpoints))
 
-    def build_epub(self, outdir, outname):
+    def build_epub(self, outdir=None, outname=None):
         # type: (str, str) -> None
         """Write the epub file.
 
         It is a zip file with the mimetype file stored uncompressed as the first
         entry.
         """
+        if outdir:
+            warnings.warn('The arguments of EpubBuilder.build_epub() is deprecated.',
+                          RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+            outname = self.config.epub_basename + '.epub'
+
         logger.info(__('writing %s file...'), outname)
         epub_filename = path.join(outdir, outname)
         with ZipFile(epub_filename, 'w', ZIP_DEFLATED) as epub:

sphinx/builders/epub3.py

@@ -9,12 +9,14 @@
     :license: BSD, see LICENSE for details.
 """
 
+import warnings
 from collections import namedtuple
 from os import path
 
 from sphinx import package_dir
 from sphinx.builders import _epub_base
 from sphinx.config import ENUM
+from sphinx.deprecation import RemovedInSphinx40Warning
 from sphinx.locale import __
 from sphinx.util import logging, xmlname_checker
 from sphinx.util.fileutil import copy_asset_file
@@ -78,12 +80,12 @@ class Epub3Builder(_epub_base.EpubBuilder):
         """Create the metainfo files and finally the epub."""
         self.validate_config_value()
         self.get_toc()
-        self.build_mimetype(self.outdir, 'mimetype')
-        self.build_container(self.outdir, 'META-INF/container.xml')
-        self.build_content(self.outdir, 'content.opf')
-        self.build_navigation_doc(self.outdir, 'nav.xhtml')
-        self.build_toc(self.outdir, 'toc.ncx')
-        self.build_epub(self.outdir, self.config.epub_basename + '.epub')
+        self.build_mimetype()
+        self.build_container()
+        self.build_content()
+        self.build_navigation_doc()
+        self.build_toc()
+        self.build_epub()
 
     def validate_config_value(self):
         # type: () -> None
@@ -202,9 +204,15 @@ class Epub3Builder(_epub_base.EpubBuilder):
         metadata['navlist'] = navlist
         return metadata
 
-    def build_navigation_doc(self, outdir, outname):
+    def build_navigation_doc(self, outdir=None, outname='nav.xhtml'):
         # type: (str, str) -> None
         """Write the metainfo file nav.xhtml."""
+        if outdir:
+            warnings.warn('The arguments of Epub3Builder.build_navigation_doc() '
+                          'is deprecated.', RemovedInSphinx40Warning, stacklevel=2)
+        else:
+            outdir = self.outdir
+
         logger.info(__('writing %s file...'), outname)
 
         if self.config.epub_tocscope == 'default':