Reify Layout

[paperdoorknob] / glowfic.py

diff --git a/glowfic.py b/glowfic.py
index 901246b10533f390ff565263fc9d5b1465b0af3c..0eab425d863dadb8669468af9ebc49a87527f19b 100644 (file)
--- a/glowfic.py
+++ b/glowfic.py
@@ -5,6 +5,8 @@
 # Free Software Foundation, version 3.
 
 
+from abc import ABC, abstractmethod
+from dataclasses import dataclass
 import itertools
 
 from typing import Iterable
@@ -12,15 +14,27 @@ from typing import Iterable
 from bs4 import BeautifulSoup
 from bs4.element import Tag
 
+from images import ImageStore
+from texify import Texifier
+
+
+@dataclass(frozen=True)
+class Chunk:
+    icon: str | None
+    character: str | None
+    screen_name: str | None
+    author: str | 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 +51,75 @@ 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.find_next('div', class_='post-icon')
+        if icon_div is None:
+            return None
+        icon_img = icon_div.find_next('img')
+        if icon_img is None:
+            return None
+        assert isinstance(icon_img, Tag)
+        return image_store.get_image(icon_img.attrs['src'])
+
+    def getTextByClass(css_class: str) -> str | None:
+        div = chunk_dom.find_next('div', class_=css_class)
+        if div is None:
+            return None
+        return div.text.strip()
+
+    content = chunk_dom.find_next('div', class_='post-content')
+    assert isinstance(content, Tag)
+
+    return Chunk(getIcon(),
+                 getTextByClass('post-character'),
+                 getTextByClass('post-screenname'),
+                 getTextByClass('post-author'),
+                 content)
+
+
+def renderIcon(icon_path: str | None) -> bytes:
+    return b'\\includegraphics{%s}' % icon_path.encode(
+        'UTF-8') if icon_path else b''
+
+
+class Layout(ABC):
+
+    @abstractmethod
+    def renderChunk(self, chunk: Chunk) -> bytes:
+        raise NotImplementedError()
+
+
+class ContentOnlyLayout(Layout):
+
+    def __init__(self, texifier: Texifier) -> None:
+        self._texifier = texifier
+
+    def renderChunk(self, chunk: Chunk) -> bytes:
+        return self._texifier.texify(chunk.content)
+
+
+class BelowIconLayout(Layout):
+
+    def __init__(self, texifier: Texifier) -> None:
+        self._texifier = texifier
+
+    def renderChunk(self, chunk: Chunk) -> bytes:
+        icon_width = b'0.25\\textwidth'  # TODO: Make this configurable
+        return b'''\\begin{wrapfigure}{l}{%s}
+%s
+%s
+%s
+%s
+\\end{wrapfigure}
+%s
+''' % (
+            icon_width,
+            renderIcon(chunk.icon),
+            chunk.character.encode('UTF-8') if chunk.character else b'',
+            chunk.screen_name.encode('UTF-8') if chunk.screen_name else b'',
+            chunk.author.encode('UTF-8') if chunk.author else b'',
+            self._texifier.texify(chunk.content))