diff --git a/Dockerfile b/Dockerfile index 0c15409b8..5595e842a 100644 --- a/Dockerfile +++ b/Dockerfile @@ -47,16 +47,12 @@ RUN \ git \ git-fast-import \ jpeg-dev \ - libxml2 \ - libxslt \ openssh \ zlib-dev \ && \ apk add --no-cache --virtual .build \ gcc \ libffi-dev \ - libxml2-dev \ - libxslt-dev \ musl-dev \ && \ pip install --no-cache-dir --upgrade pip \ diff --git a/material/plugins/blog/plugin.py b/material/plugins/blog/plugin.py index e0a9fdb6e..c75b5239c 100644 --- a/material/plugins/blog/plugin.py +++ b/material/plugins/blog/plugin.py @@ -23,7 +23,6 @@ from __future__ import annotations import logging import os import posixpath -import readtime import yaml from babel.dates import format_date @@ -43,6 +42,7 @@ from yaml import SafeLoader from .author import Authors from .config import BlogConfig +from .readtime import readtime from .structure import Archive, Category, Excerpt, Post, View from .templates import url_filter @@ -260,17 +260,6 @@ class BlogPlugin(BasePlugin[BlogConfig]): # Append to list of authors page.authors.append(self.authors[name]) - # Compute readtime of post, if enabled and not explicitly set - if self.config.post_readtime: - rate = self.config.post_readtime_words_per_minute - - # There's a bug in the readtime library which causes it to fail if - # the input string contains emojis - see https://t.ly/qEoHq - if not page.config.readtime: - data = markdown.encode("unicode_escape") - read = readtime.of_markdown(data, rate) - page.config.readtime = read.minutes - # Extract settings for excerpts separator = self.config.post_excerpt_separator max_authors = self.config.post_excerpt_max_authors @@ -295,6 +284,22 @@ class BlogPlugin(BasePlugin[BlogConfig]): page.excerpt.authors = page.authors[:max_authors] page.excerpt.categories = page.categories[:max_categories] + # Process posts + def on_page_content(self, html, *, page, config, files): + if not self.config.enabled: + return + + # Skip if page is not a post managed by this instance - this plugin has + # support for multiple instances, which is why this check is necessary + if page not in self.blog.posts: + return + + # Compute readtime of post, if enabled and not explicitly set + if self.config.post_readtime: + words_per_minute = self.config.post_readtime_words_per_minute + if not page.config.readtime: + page.config.readtime = readtime(html, words_per_minute) + # Register template filters for plugin def on_env(self, env, *, config, files): if not self.config.enabled: diff --git a/material/plugins/blog/readtime/__init__.py b/material/plugins/blog/readtime/__init__.py new file mode 100644 index 000000000..c21a582a6 --- /dev/null +++ b/material/plugins/blog/readtime/__init__.py @@ -0,0 +1,74 @@ +# Copyright (c) 2016-2023 Martin Donath + +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: + +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. + +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +# IN THE SOFTWARE. + +import re + +from html.parser import HTMLParser +from math import ceil + +# ----------------------------------------------------------------------------- +# Functions +# ----------------------------------------------------------------------------- + +# Compute readtime - we first used the original readtime library, but the list +# of dependencies it brings with it increased the size of the Docker image by +# 20 MB (packed), which is an increase of 50%. For this reason, we adapt the +# original readtime algorithm to our needs - see https://t.ly/fPZ7L +def readtime(html: str, words_per_minute: int): + parser = ReadtimeParser() + parser.feed(html) + parser.close() + + # Extract words from text and compute readtime in seconds + words = len(re.split(r"\W+", "".join(parser.text))) + seconds = ceil(words / words_per_minute * 60) + + # Account for additional images + delta = 12 + for _ in range(parser.images): + seconds += delta + if delta > 3: delta -= 1 + + # Return readtime in minutes + return ceil(seconds / 60) + +# ----------------------------------------------------------------------------- +# Classes +# ----------------------------------------------------------------------------- + +# Readtime parser +class ReadtimeParser(HTMLParser): + + # Initialize parser + def __init__(self): + super().__init__(convert_charrefs = True) + + # Keep track of text and images + self.text = [] + self.images = 0 + + # Collect images + def handle_starttag(self, tag, attrs): + if tag == "img": + self.images += 1 + + # Collect text + def handle_data(self, data): + self.text.append(data) diff --git a/requirements.txt b/requirements.txt index cc1f3ffa9..15045a83a 100644 --- a/requirements.txt +++ b/requirements.txt @@ -29,8 +29,6 @@ pymdown-extensions>=9.9.1 # Requirements for plugins babel>=2.10.3 colorama>=0.4 -lxml>=4.6 paginate>=0.5.6 -readtime>=2.0 regex>=2022.4.24 requests>=2.26 diff --git a/src/plugins/blog/plugin.py b/src/plugins/blog/plugin.py index e0a9fdb6e..c75b5239c 100644 --- a/src/plugins/blog/plugin.py +++ b/src/plugins/blog/plugin.py @@ -23,7 +23,6 @@ from __future__ import annotations import logging import os import posixpath -import readtime import yaml from babel.dates import format_date @@ -43,6 +42,7 @@ from yaml import SafeLoader from .author import Authors from .config import BlogConfig +from .readtime import readtime from .structure import Archive, Category, Excerpt, Post, View from .templates import url_filter @@ -260,17 +260,6 @@ class BlogPlugin(BasePlugin[BlogConfig]): # Append to list of authors page.authors.append(self.authors[name]) - # Compute readtime of post, if enabled and not explicitly set - if self.config.post_readtime: - rate = self.config.post_readtime_words_per_minute - - # There's a bug in the readtime library which causes it to fail if - # the input string contains emojis - see https://t.ly/qEoHq - if not page.config.readtime: - data = markdown.encode("unicode_escape") - read = readtime.of_markdown(data, rate) - page.config.readtime = read.minutes - # Extract settings for excerpts separator = self.config.post_excerpt_separator max_authors = self.config.post_excerpt_max_authors @@ -295,6 +284,22 @@ class BlogPlugin(BasePlugin[BlogConfig]): page.excerpt.authors = page.authors[:max_authors] page.excerpt.categories = page.categories[:max_categories] + # Process posts + def on_page_content(self, html, *, page, config, files): + if not self.config.enabled: + return + + # Skip if page is not a post managed by this instance - this plugin has + # support for multiple instances, which is why this check is necessary + if page not in self.blog.posts: + return + + # Compute readtime of post, if enabled and not explicitly set + if self.config.post_readtime: + words_per_minute = self.config.post_readtime_words_per_minute + if not page.config.readtime: + page.config.readtime = readtime(html, words_per_minute) + # Register template filters for plugin def on_env(self, env, *, config, files): if not self.config.enabled: diff --git a/src/plugins/blog/readtime/__init__.py b/src/plugins/blog/readtime/__init__.py new file mode 100644 index 000000000..c21a582a6 --- /dev/null +++ b/src/plugins/blog/readtime/__init__.py @@ -0,0 +1,74 @@ +# Copyright (c) 2016-2023 Martin Donath + +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: + +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. + +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +# IN THE SOFTWARE. + +import re + +from html.parser import HTMLParser +from math import ceil + +# ----------------------------------------------------------------------------- +# Functions +# ----------------------------------------------------------------------------- + +# Compute readtime - we first used the original readtime library, but the list +# of dependencies it brings with it increased the size of the Docker image by +# 20 MB (packed), which is an increase of 50%. For this reason, we adapt the +# original readtime algorithm to our needs - see https://t.ly/fPZ7L +def readtime(html: str, words_per_minute: int): + parser = ReadtimeParser() + parser.feed(html) + parser.close() + + # Extract words from text and compute readtime in seconds + words = len(re.split(r"\W+", "".join(parser.text))) + seconds = ceil(words / words_per_minute * 60) + + # Account for additional images + delta = 12 + for _ in range(parser.images): + seconds += delta + if delta > 3: delta -= 1 + + # Return readtime in minutes + return ceil(seconds / 60) + +# ----------------------------------------------------------------------------- +# Classes +# ----------------------------------------------------------------------------- + +# Readtime parser +class ReadtimeParser(HTMLParser): + + # Initialize parser + def __init__(self): + super().__init__(convert_charrefs = True) + + # Keep track of text and images + self.text = [] + self.images = 0 + + # Collect images + def handle_starttag(self, tag, attrs): + if tag == "img": + self.images += 1 + + # Collect text + def handle_data(self, data): + self.text.append(data)