Modify OS info for article info

docs/conf.py

@@ -15,9 +15,8 @@
 external_projects_current_project = "rocm-docs-core"
 
 setting_all_article_info = True
-
-all_article_info_os = ["linux", "windows"]
-
+all_article_info_os = []
+all_article_info_author = ""
 # specific settings override any general settings (eg: all_article_info_<field>)
 article_pages = [
     {
@@ -27,7 +26,16 @@
         "date": "2024-07-03",
         "read-time": "2 min read",
     },
-    {"file": "developer_guide/commitizen"},
+    {
+        "file": "user_guide/article_info",
+        "os": [],
+        "author": "",
+        "date": "",
+        "read-time": "",
+    },
+    {
+        "file": "developer_guide/commitizen",
+    },
 ]
 
 html_theme = "rocm_docs_theme"

src/rocm_docs/article_info.py

@@ -0,0 +1,216 @@
+"""Logic to add article info to a page.
+
+For all options see the user guide:
+https://rocm.docs.amd.com/projects/rocm-docs-core/en/latest/user_guide/article_info.html
+"""
+
+from typing import Any, cast
+
+import importlib.resources
+import os
+from pathlib import Path
+
+import bs4
+import git.repo
+from sphinx.application import Sphinx
+from sphinx.config import Config
+
+
+def set_article_info(app: Sphinx, _: Config) -> None:
+    """Add article info headers to HTML pages."""
+    if (
+        app.config.setting_all_article_info is False
+        and len(app.config.article_pages) == 0
+    ):
+        return
+
+    article_info = (
+        importlib.resources.files("rocm_docs")
+        .joinpath("rocm_docs_theme/components/article-info.html")
+        .read_text(encoding="utf-8")
+    )
+
+    specific_pages: list[str] = []
+
+    _set_page_article_info(app, article_info, specific_pages)
+
+    if app.config.setting_all_article_info is True:
+        _set_all_article_info(app, article_info, specific_pages)
+
+
+def _set_page_article_info(
+    app: Sphinx, article_info: str, specific_pages: list[str]
+) -> None:
+    """Add article info headers to the configured HTML pages.
+
+    The pages can be set in "article_pages" of the Sphinx configuration.
+    """
+    repo = git.repo.Repo(app.srcdir, search_parent_directories=True)
+    for page in app.config.article_pages:
+        path_rel = app.project.doc2path(page["file"], False)
+        path_html = Path(app.outdir, path_rel).with_suffix(".html")
+        path_source = Path(app.srcdir, path_rel)
+
+        # FIXME: This will silently skip all files when not building the default
+        # `html` format (e.g `htmlzip`, `epub` or `pdf`)
+        if not path_html.is_file():
+            continue
+
+        os_list = []
+        page.setdefault("os", app.config.all_article_info_os)
+        if "linux" in page["os"]:
+            os_list.append("Linux")
+        if "windows" in page["os"]:
+            os_list.append("Windows")
+        article_os_info = " and ".join(os_list)
+        if os_list:
+            article_os_info = f"Applies to {article_os_info}"
+        modified_info = article_info.replace("<!--os-info-->", article_os_info)
+
+        author = app.config.all_article_info_author
+        if "author" in page:
+            author = page["author"]
+        modified_info = modified_info.replace("<!--author-info-->", author)
+
+        date_info: str | None = None
+        if "date" in page:
+            date_info = page["date"]
+        else:
+            date_info = _get_time_last_modified(repo, path_source)
+
+        if date_info == "":
+            soup = bs4.BeautifulSoup(modified_info, "html.parser")
+            svg_to_remove = soup.find("span", class_="article-info-date-svg")
+            if svg_to_remove and isinstance(svg_to_remove, bs4.Tag):
+                svg_to_remove.decompose()
+            modified_info = str(soup)
+
+        if date_info is not None:
+            modified_info = modified_info.replace("<!--date-info-->", date_info)
+
+        if "read-time" in page:
+            read_time = page["read-time"]
+        else:
+            read_time = _estimate_read_time(path_html)
+
+        if read_time == "":
+            soup = bs4.BeautifulSoup(modified_info, "html.parser")
+            svg_to_remove = soup.find(
+                "span", class_="article-info-read-time-svg"
+            )
+            if svg_to_remove and isinstance(svg_to_remove, bs4.Tag):
+                svg_to_remove.decompose()
+            modified_info = str(soup)
+
+        if read_time is not None:
+            modified_info = modified_info.replace("<!--read-info-->", read_time)
+
+        specific_pages.append(page["file"])
+        _write_article_info(path_html, modified_info)
+
+
+def _set_all_article_info(
+    app: Sphinx, article_info: str, specific_pages: list[str]
+) -> None:
+    """Add article info headers with general settings to all HTML pages.
+
+    Pages that have specific settings (configured by "article_pages") are
+    skipped.
+    """
+    repo = git.repo.Repo(app.srcdir, search_parent_directories=True)
+    for docname in app.project.docnames:
+        # skip pages with specific settings
+        if docname in specific_pages:
+            continue
+
+        page_rel = app.project.doc2path(docname, False)
+        page = Path(app.outdir, page_rel).with_suffix(".html")
+
+        # FIXME: This will silently skip all files when not building the default
+        # `html` format (e.g `htmlzip`, `epub` or `pdf`)
+        if not page.is_file():
+            continue
+
+        os_list = []
+        if "linux" in app.config.all_article_info_os:
+            os_list.append("Linux")
+        if "windows" in app.config.all_article_info_os:
+            os_list.append("Windows")
+        article_os_info = " and ".join(os_list)
+        if os_list:
+            article_os_info = f"Applies to {article_os_info}"
+
+        date_info = _get_time_last_modified(repo, Path(app.srcdir, page_rel))
+        if not date_info:
+            date_info = cast(str, app.config.all_article_info_date)
+
+        modified_info = article_info.replace("<!--os-info-->", article_os_info)
+        modified_info = modified_info.replace(
+            "<!--author-info-->", app.config.all_article_info_author
+        )
+        modified_info = modified_info.replace("<!--date-info-->", date_info)
+        modified_info = modified_info.replace(
+            "<!--read-info-->", _estimate_read_time(page)
+        )
+
+        _write_article_info(page, modified_info)
+
+
+def _get_time_last_modified(repo: git.repo.Repo, path: Path) -> str | None:
+    try:
+        time = next(
+            repo.iter_commits(paths=path, max_count=1)
+        ).committed_datetime
+        return time.strftime("%Y-%m-%d")
+    except StopIteration:
+        return None
+
+
+def _estimate_read_time(file_name: Path) -> str:
+    def is_visible(element):
+        if element.parent.name in [
+            "style",
+            "script",
+            "[document]",
+            "head",
+            "title",
+        ]:
+            return False
+        if isinstance(element, bs4.element.Comment):
+            return False
+        return element.string != "\n"
+
+    words_per_minute = 200
+    average_word_length = 5
+
+    with open(file_name, encoding="utf-8") as file:
+        html = file.read()
+    soup = bs4.BeautifulSoup(html, "html.parser")
+    page_text = soup.findAll(text=True)
+    visible_page_text = filter(is_visible, page_text)
+    average_word_count = (
+        sum(len(line) for line in visible_page_text) / average_word_length
+    )
+    time_minutes = int(max(1, round(average_word_count / words_per_minute)))
+    return f"{time_minutes} min read time"
+
+
+def _write_article_info(path: os.PathLike[Any], article_info: str) -> None:
+    with open(path, "r+", encoding="utf8") as file:
+        page_html = file.read()
+        soup = bs4.BeautifulSoup(page_html, "html.parser")
+
+        has_article_info = soup.find("div", id="rocm-docs-core-article-info")
+        if (
+            has_article_info is not None
+            or soup.article is None
+            or soup.article.h1 is None
+        ):
+            return
+
+        soup.article.h1.insert_after(
+            bs4.BeautifulSoup(article_info, "html.parser")
+        )
+        file.seek(0)
+        file.truncate(0)
+        file.write(str(soup))