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[etc/vim.git] / docs / conf.py
index 4a3c67c81985b27b58edf4e42119966cb7f1a4d0..3343087cfbd02b7b9fe89dbb4412ce590096c1ae 100644 (file)
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
+from pathlib import Path
+import re
+import string
+from typing import Callable, List, Optional, Pattern, Tuple, Set
+from dataclasses import dataclass
 import os
-import sys
+import logging
 
+from pkg_resources import get_distribution
 from recommonmark.parser import CommonMarkParser
 
+logging.basicConfig(format="%(levelname)s: %(message)s", level=logging.INFO)
+
+LOG = logging.getLogger(__name__)
+
+# Get a relative path so logs printing out SRC isn't too long.
+CURRENT_DIR = Path(__file__).parent.relative_to(os.getcwd())
+README = CURRENT_DIR / ".." / "README.md"
+REFERENCE_DIR = CURRENT_DIR / "reference"
+STATIC_DIR = CURRENT_DIR / "_static"
+
+
+@dataclass
+class SrcRange:
+    """Tracks which part of a file to get a section's content.
+
+    Data:
+        start_line: The line where the section starts (i.e. its sub-header) (inclusive).
+        end_line: The line where the section ends (usually next sub-header) (exclusive).
+    """
+
+    start_line: int
+    end_line: int
+
+
+@dataclass
+class DocSection:
+    """Tracks information about a section of documentation.
+
+    Data:
+        name: The section's name. This will used to detect duplicate sections.
+        src: The filepath to get its contents.
+        processors: The processors to run before writing the section to CURRENT_DIR.
+        out_filename: The filename to use when writing the section to CURRENT_DIR.
+        src_range: The line range of SRC to gets its contents.
+    """
+
+    name: str
+    src: Path
+    src_range: SrcRange = SrcRange(0, 1_000_000)
+    out_filename: str = ""
+    processors: Tuple[Callable, ...] = ()
+
+    def get_out_filename(self) -> str:
+        if not self.out_filename:
+            return self.name + ".md"
+        else:
+            return self.out_filename
+
+
+def make_pypi_svg(version: str) -> None:
+    template: Path = CURRENT_DIR / "_static" / "pypi_template.svg"
+    target: Path = CURRENT_DIR / "_static" / "pypi.svg"
+    with open(str(template), "r", encoding="utf8") as f:
+        svg: str = string.Template(f.read()).substitute(version=version)
+    with open(str(target), "w", encoding="utf8") as f:
+        f.write(svg)
+
+
+def make_filename(line: str) -> str:
+    non_letters: Pattern = re.compile(r"[^a-z]+")
+    filename: str = line[3:].rstrip().lower()
+    filename = non_letters.sub("_", filename)
+    if filename.startswith("_"):
+        filename = filename[1:]
+    if filename.endswith("_"):
+        filename = filename[:-1]
+    return filename + ".md"
+
+
+def get_contents(section: DocSection) -> str:
+    """Gets the contents for the DocSection."""
+    contents: List[str] = []
+    src: Path = section.src
+    start_line: int = section.src_range.start_line
+    end_line: int = section.src_range.end_line
+    with open(src, "r", encoding="utf-8") as f:
+        for lineno, line in enumerate(f, start=1):
+            if lineno >= start_line and lineno < end_line:
+                contents.append(line)
+    return "".join(contents)
+
+
+def get_sections_from_readme() -> List[DocSection]:
+    """Gets the sections from README so they can be processed by process_sections.
+
+    It opens README and goes down line by line looking for sub-header lines which
+    denotes a section. Once it finds a sub-header line, it will create a DocSection
+    object with all of the information currently available. Then on every line, it will
+    track the ending line index of the section. And it repeats this for every sub-header
+    line it finds.
+    """
+    sections: List[DocSection] = []
+    section: Optional[DocSection] = None
+    with open(README, "r", encoding="utf-8") as f:
+        for lineno, line in enumerate(f, start=1):
+            if line.startswith("## "):
+                filename = make_filename(line)
+                section_name = filename[:-3]
+                section = DocSection(
+                    name=str(section_name),
+                    src=README,
+                    src_range=SrcRange(lineno, lineno),
+                    out_filename=filename,
+                    processors=(fix_headers,),
+                )
+                sections.append(section)
+            if section is not None:
+                section.src_range.end_line += 1
+    return sections
+
+
+def fix_headers(contents: str) -> str:
+    """Fixes the headers of sections copied from README.
+
+    Removes one octothorpe (#) from all headers since the contents are no longer nested
+    in a root document (i.e. the README).
+    """
+    lines: List[str] = contents.splitlines()
+    fixed_contents: List[str] = []
+    for line in lines:
+        if line.startswith("##"):
+            line = line[1:]
+        fixed_contents.append(line + "\n")  # splitlines strips the leading newlines
+    return "".join(fixed_contents)
+
+
+def process_sections(
+    custom_sections: List[DocSection], readme_sections: List[DocSection]
+) -> None:
+    """Reads, processes, and writes sections to CURRENT_DIR.
+
+    For each section, the contents will be fetched, processed by processors
+    required by the section, and written to CURRENT_DIR. If it encounters duplicate
+    sections (i.e. shares the same name attribute), it will skip processing the
+    duplicates.
+
+    It processes custom sections before the README generated sections so sections in the
+    README can be overwritten with custom options.
+    """
+    processed_sections: Set[str] = set()
+    modified_files: Set[Path] = set()
+    sections: List[DocSection] = custom_sections
+    sections.extend(readme_sections)
+    for section in sections:
+        LOG.info(f"Processing '{section.name}' from {section.src}")
+        if section.name in processed_sections:
+            LOG.info(
+                f"Skipping '{section.name}' from '{section.src}' as it is a duplicate"
+            )
+            continue
+
+        target_path: Path = CURRENT_DIR / section.get_out_filename()
+        if target_path in modified_files:
+            LOG.warning(
+                f"{target_path} has been already written to, its contents will be"
+                " OVERWRITTEN and notices will be duplicated"
+            )
+        contents: str = get_contents(section)
+
+        # processors goes here
+        if fix_headers in section.processors:
+            contents = fix_headers(contents)
+
+        with open(target_path, "w", encoding="utf-8") as f:
+            if section.src.suffix == ".md":
+                f.write(
+                    "[//]: # (NOTE: THIS FILE WAS AUTOGENERATED FROM"
+                    f" {section.src})\n\n"
+                )
+            f.write(contents)
+        processed_sections.add(section.name)
+        modified_files.add(target_path)
 
-sys.path.insert(0, os.path.abspath('.' ))
 
 # -- Project information -----------------------------------------------------
 
-project = 'Black'
-copyright = '2018, Łukasz Langa and contributors to Black'
-author = 'Łukasz Langa and contributors to Black'
+project = "Black"
+copyright = "2018, Łukasz Langa and contributors to Black"
+author = "Łukasz Langa and contributors to Black"
 
 # Autopopulate version
-import black
+# The version, including alpha/beta/rc tags, but not commit hash and datestamps
+release = get_distribution("black").version.split("+")[0]
 # The short X.Y version.
-# TODO: fix for 2 digit month
-version = f'{black.__version__[:4]}'
-# The full version, including alpha/beta/rc tags.
-release = black.__version__
+version = release
+for sp in "abcfr":
+    version = version.split(sp)[0]
+
+custom_sections = [
+    DocSection("the_black_code_style", CURRENT_DIR / "the_black_code_style.md",),
+    DocSection("pragmatism", CURRENT_DIR / "the_black_code_style.md",),
+    DocSection("editor_integration", CURRENT_DIR / "editor_integration.md"),
+    DocSection("blackd", CURRENT_DIR / "blackd.md"),
+    DocSection("black_primer", CURRENT_DIR / "black_primer.md"),
+    DocSection("contributing_to_black", CURRENT_DIR / ".." / "CONTRIBUTING.md"),
+    DocSection("change_log", CURRENT_DIR / ".." / "CHANGES.md"),
+]
+
+
+make_pypi_svg(release)
+readme_sections = get_sections_from_readme()
+process_sections(custom_sections, readme_sections)
+
 
 # -- General configuration ---------------------------------------------------
 
@@ -43,24 +236,19 @@ release = black.__version__
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-]
+extensions = ["sphinx.ext.autodoc", "sphinx.ext.intersphinx", "sphinx.ext.napoleon"]
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
-source_parsers = {
-    '.md': CommonMarkParser,
-}
+source_parsers = {".md": CommonMarkParser}
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
-source_suffix = ['.rst', '.md']
+source_suffix = [".rst", ".md"]
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -72,10 +260,11 @@ language = None
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path .
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 
 # -- Options for HTML output -------------------------------------------------
@@ -83,35 +272,36 @@ pygments_style = 'sphinx'
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+html_theme = "alabaster"
 
 html_sidebars = {
-    '**': [
-        'about.html',
-        'navigation.html',
-        'relations.html',
-        'sourcelink.html',
-        'searchbox.html'
+    "**": [
+        "about.html",
+        "navigation.html",
+        "relations.html",
+        "sourcelink.html",
+        "searchbox.html",
     ]
 }
 
 html_theme_options = {
-    'show_related': True,
-    'description': '“Any color you like.”',
-    'github_button': True,
-    'github_user': 'ambv',
-    'github_repo': 'black',
-    'github_type': 'star',
-    'show_powered_by': True,
-    'fixed_sidebar': True,
-    'logo': 'logo2.png',
+    "show_related": False,
+    "description": "“Any color you like.”",
+    "github_button": True,
+    "github_user": "psf",
+    "github_repo": "black",
+    "github_type": "star",
+    "show_powered_by": True,
+    "fixed_sidebar": True,
+    "logo": "logo2.png",
+    "travis_button": True,
 }
 
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
@@ -127,7 +317,7 @@ html_static_path = ['_static']
 # -- Options for HTMLHelp output ---------------------------------------------
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'blackdoc'
+htmlhelp_basename = "blackdoc"
 
 
 # -- Options for LaTeX output ------------------------------------------------
@@ -136,15 +326,12 @@ latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
     #
     # 'papersize': 'letterpaper',
-
     # The font size ('10pt', '11pt' or '12pt').
     #
     # 'pointsize': '10pt',
-
     # Additional stuff for the LaTeX preamble.
     #
     # 'preamble': '',
-
     # Latex figure (float) alignment
     #
     # 'figure_align': 'htbp',
@@ -154,8 +341,13 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'black.tex', 'Documentation for Black',
-     'Łukasz Langa and contributors to Black', 'manual'),
+    (
+        master_doc,
+        "black.tex",
+        "Documentation for Black",
+        "Łukasz Langa and contributors to Black",
+        "manual",
+    )
 ]
 
 
@@ -163,10 +355,7 @@ latex_documents = [
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
-man_pages = [
-    (master_doc, 'black', 'Documentation for Black',
-     [author], 1)
-]
+man_pages = [(master_doc, "black", "Documentation for Black", [author], 1)]
 
 
 # -- Options for Texinfo output ----------------------------------------------
@@ -175,9 +364,15 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'Black', 'Documentation for Black',
-     author, 'Black', 'The uncompromising Python code formatter',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "Black",
+        "Documentation for Black",
+        author,
+        "Black",
+        "The uncompromising Python code formatter",
+        "Miscellaneous",
+    )
 ]
 
 
@@ -199,12 +394,14 @@ epub_copyright = copyright
 # epub_uid = ''
 
 # A list of files that should not be packed into the epub file.
-epub_exclude_files = ['search.html']
+epub_exclude_files = ["search.html"]
 
 
 # -- Extension configuration -------------------------------------------------
 
+autodoc_member_order = "bysource"
+
 # -- Options for intersphinx extension ---------------------------------------
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/3/': None}
+intersphinx_mapping = {"https://docs.python.org/3/": None}