Learning TeX: Do Layouts with TeX macros

[paperdoorknob] / glowfic.py

diff --git a/glowfic.py b/glowfic.py
index 901246b10533f390ff565263fc9d5b1465b0af3c..012bd069aca5a3066b443640bc66904d796e44ee 100644 (file)
--- a/glowfic.py
+++ b/glowfic.py
@@ -5,22 +5,53 @@
 # Free Software Foundation, version 3.
 
 
+from dataclasses import dataclass
 import itertools
+from urllib.parse import parse_qsl, urlencode, urlparse, urlunparse
 
 from typing import Iterable
 
 from bs4 import BeautifulSoup
 from bs4.element import Tag
 
+from images import ImageStore
+from texify import Texifier
+
+
+def _removeViewFromURL(url: str) -> str:
+    u = urlparse(url)
+    old_qs = parse_qsl(u.query)
+    new_qs = [(k, v) for k, v in old_qs if k != 'view']
+    return urlunparse(u._replace(query=urlencode(new_qs)))
+
+
+def nonFlatURL(url: str) -> str:
+    return _removeViewFromURL(url)
+
+
+def flatURL(url: str) -> str:
+    u = urlparse(_removeViewFromURL(url))
+    qs = parse_qsl(u.query) + [('view', 'flat')]
+    return urlunparse(u._replace(query=urlencode(qs)))
+
+
+@dataclass(frozen=True)
+class Chunk:
+    icon: str | None
+    character: Tag | None
+    screen_name: Tag | None
+    author: Tag | None
+    content: Tag
+
 # We avoid the name "post" because the Glowfic community uses the term
 # inconsistently:
 #  * The Glowfic software sometimes uses "post" to refer to a whole thread
-#    (eg: in the URL), but more often uses "post" to refer to just the first
-#    chunk in a thread.  The non-first chunks are "replies".
+#    (in the URL), sometimes uses "post" to refer to chunks (in the CSS),
+#    but mostly uses "post" to refer to just the first chunk in a thread
+#    (in the HTML and UI).  The non-first chunks are "replies".
 #  * Readers and this software don't need to distinguish first-chunks and
 #    non-first-chunks.
-#  * Humans in the community tend to use "posts" to mean "chunks" ("replies"
-#    in the Glowfic software's lexicon).
+#  * Humans in the community tend to use "posts" to mean chunks.
 
 
 def chunkDOMs(html: BeautifulSoup) -> Iterable[Tag]:
@@ -37,3 +68,110 @@ def chunkDOMs(html: BeautifulSoup) -> Iterable[Tag]:
         return rs
 
     return itertools.chain([text()], the_replies())
+
+
+def makeChunk(chunk_dom: Tag, image_store: ImageStore) -> Chunk:
+
+    def getIcon() -> str | None:
+        icon_div = chunk_dom.findChild('div', class_='post-icon')
+        if icon_div is None:
+            return None
+        assert isinstance(icon_div, Tag)
+        icon_img = icon_div.findChild('img')
+        if icon_img is None:
+            return None
+        assert isinstance(icon_img, Tag)
+        return image_store.get_image(icon_img.attrs['src'])
+
+    def getByClass(css_class: str) -> Tag | None:
+        tag = chunk_dom.findChild('div', class_=css_class)
+        assert tag is None or isinstance(tag, Tag)
+        return tag
+
+    def stripHREF(tag: Tag) -> None:
+        for c in tag.findChildren("a"):
+            if "href" in c.attrs:
+                del c.attrs["href"]
+
+    def getMeta(css_class: str) -> Tag | None:
+        tag = getByClass(css_class)
+        if tag is None:
+            return None
+        stripHREF(tag)
+        return tag
+
+    content = chunk_dom.findChild('div', class_='post-content')
+    assert isinstance(content, Tag)
+
+    return Chunk(getIcon(),
+                 getMeta('post-character'),
+                 getMeta('post-screenname'),
+                 getMeta('post-author'),
+                 content)
+
+
+def renderChunk(texifier: Texifier, chunk: Chunk) -> bytes:
+    return b''.join([
+        br'\glowhead{',
+        br'\glowicon{%s}' % chunk.icon.encode('UTF-8') if chunk.icon else b'',
+        b'}{',
+        texifier.texify(chunk.character) if chunk.character else b'',
+        b'}{',
+        texifier.texify(chunk.screen_name) if chunk.screen_name else b'',
+        b'}{',
+        texifier.texify(chunk.author) if chunk.author else b'',
+        b'}',
+        texifier.texify(chunk.content)])
+
+
+ContentOnlyLayout = br'''
+\newcommand{\glowhead}[4]{}
+'''
+
+
+BelowIconLayout = br'''
+\newcommand{\glowhead}[4]{\wrapstuffclear
+\begin{wrapstuff}[l]
+\fbox{
+\begin{varwidth}{0.5\textwidth}
+  \smash{\parbox[t][0pt]{0pt}{
+    \setlength{\fboxrule}{0.2pt}
+    \setlength{\fboxsep}{0pt}
+    \vspace{-3.4pt}
+    \fbox{\hspace{107mm}}
+  }\\*}
+  \vspace{-1em}
+\begin{center}
+#1\ifnotempty
+{#1}{\\*}#2\ifnotempty
+{#2}{\\*}#3\ifnotempty
+{#3}{\\*}#4
+\end{center}
+\end{varwidth}
+}
+\end{wrapstuff}
+
+\strut
+
+\noindent}'''
+
+
+# Why is \textwidth not the width of the text?
+# Why is the width of the text .765\textwidth?
+BesideIconLayout = br'''
+\newcommand{\glowhead}[4]{
+
+\strut
+
+\noindent\fbox{
+#1
+\parbox[b]{.765\textwidth}{
+\begin{center}
+#2\ifnotempty
+{#2}{\\*}#3\ifnotempty
+{#3}{\\*}#4
+\end{center}
+}
+}\\*
+\vspace{-0.75em}\\*
+\noindent}'''