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CrossDown_.py
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import time
from typing import *
import re
import emoji
import markdown
try: # 检测当前平台是否支持扩展语法
import CrossMore
EXTRA_ABLE = True
except ModuleNotFoundError:
EXTRA_ABLE = False
__all__ = [
'main', # 主函数
'indent', # 添加空格
'body', # 主题函数
'Style', # 风格
'Value', # 变量
'CodeBlock', # 代码块
'Syllabus', # 提纲
'Basic', # 基础
'HEAD',
'BODY',
]
__version__ = '0.11.2'
__author__ = 'CrossDark'
__email__ = 'liuhanbo333@icloud.com'
__source__ = 'https://crossdark.net/'
__license__ = """MIT"""
HEAD = (
'<script type="text/javascript" async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/MathJax.js?config=TeX-MML-AM_CHTML"></script>',
'<link href="https://cdn.jsdelivr.net/npm/prismjs/themes/prism.css" rel="stylesheet" />',
'<script src="https://cdn.jsdelivr.net/npm/prismjs/prism.js"></script>',
'<script src="https://cdn.jsdelivr.net/npm/prismjs/components/prism-yaml.min.js"></script>',
'<script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>',
'<style>',
' .block {',
' background-color: grey; /* 灰色背景 */',
' color: white; /* 白色文字 */',
'}',
'</style>'
)
BODY = (
'<script>',
' mermaid.initialize({{startOnLoad:true}});',
'</script>',
'<script>',
' document.addEventListener("DOMContentLoaded", function() {',
' emojify.run();',
'});',
'</script>',
)
class Style:
"""
渲染字体样式
"""
def __init__(self, text: str):
"""
初始化
:param text: cd文本
"""
self.text = text
def underline(self):
"""
~下划线~
:return:
"""
self.text = re.sub(r'~([^~\n]+)~', r'<u>\1</u>', self.text)
def strikethrough(self):
"""
~~删除线~~
:return:
"""
self.text = re.sub(r'~~([^~\n]+)~~', r'<s>\1</s>', self.text)
def highlight(self):
"""
==高亮==
:return:
"""
self.text = re.sub(r'==([^=\n]+)==', r'<mark>\1</mark>', self.text)
def up(self):
"""
[在文本的正上方添加一行小文本]^(主要用于标拼音)
:return:
"""
self.text = re.sub(r'\[(.*?)]\^\((.*?)\)', r'<ruby>\1<rt>\2</rt></ruby>', self.text)
def hide(self):
"""
[在指定的文本里面隐藏一段文本]-(只有鼠标放在上面才会显示隐藏文本)
:return:
"""
self.text = re.sub(r'\[(.*?)]-\((.*?)\)', r'<span title="\2">\1</span>', self.text)
def __call__(self, *args, **kwargs) -> str:
"""
一键运行
:param args:
:param kwargs:
:return: 处理后的文本
"""
self.strikethrough()
self.underline()
self.highlight()
self.up()
self.hide()
return self.text
class Value:
"""
定义: {变量名} = 值
赋值: {变量或锚点名}
锚点: {#锚点名}
"""
def __init__(self, text: str):
self.text = text
self.values = {
key: value for key, value in re.findall(r'\{([^{}#]+)} ?= ?(.+?)(?=\n|$)', text)
} # 从text中提取所有变量并转换成字典
self.anchor = re.findall(r'\{#([^{}#]+)}', text)
def __call__(self, *args, **kwargs) -> Tuple[str, Dict[str, str]]:
"""
将所有变量赋值并移除变量定义
:param args:
:param kwargs:
:return: 赋值后的正文
"""
text = self.text
for item in self.anchor:
text = re.sub(r'\{#(' + item + ')}', r'<span id="\1"></span>', text) # 添加锚点
text = re.sub(r'\{' + item + '}', fr'<a href="#{item}">{item}</a>', text) # 添加页内链接
for k, v in self.values.items():
text = re.sub(r'\{' + k + '} ?= ?(.+?)(?=\n|$)', '', text) # 移除变量的定义
text = re.sub(r'\{' + k + '}', fr'{v}', text) # 给变量赋值
return text, self.values
class CodeBlock:
def __init__(self, text: str):
"""
找出`代码块`并移除代码标识
:param text: 输入的文本
"""
self.codes = [i for i in re.findall(r'`([^`]*)`', text) if i != ''] # 找出代码快
self.text = re.sub(r'``', '', text) # 移除代码标识`
def __call__(self, *args, **kwargs) -> str:
"""
临时移除代码块
:param args:
:param kwargs:
:return: 不含代码的文本
"""
for index, item in enumerate(self.codes): # 替换代码块为-@@-(ID)-@@-
self.text = re.sub(fr'`{re.escape(item)}`', f'\0\1{index}\1\0', self.text) # 同时转译特殊字符
return self.text
def rendering(self, values: Dict[str, str]):
"""
渲染代码
:param values: 变量字典
:return:
"""
for index, code in enumerate(self.codes):
if re.match(r'\{[^$]*}', code): # 是变量
# 给变量赋值
key = re.findall(r'\{([^}]+)}', code)[0] # 查找变量名
code = re.sub(r'\{' + key + '}', fr'{values[key]}', code)
self.codes[index] = code # 给变量赋值
if re.search(r'\n', code): # 是多行代码
head = re.findall(r'(.*?)\n', code)[0]
if head in ('', 'yaml'):
self.codes[index] = f'<pre><code class="language-yaml">{code}</code></pre>'
elif head in ('shell', 'python'):
self.codes[
index] = f'<pre><code class="language-{head}">{re.sub(f"({head})", "", code)}</code></pre>'
elif head in ('mermaid',):
self.codes[index] = f'<div class="{head}">{re.sub(f"({head})", "", code)}</div>'
elif re.match(r'\$[^$]*\$', code): # 是LaTex代码(单行)
self.codes[index] = re.sub(fr'\$([^$]*)\$', r'<p>\(\1\)</p>', code)
elif re.match(r'¥[^$]*¥', code): # 是数学函数(单行)
if EXTRA_ABLE:
expression, range_ = re.findall(r'¥([^$]*)¥(€[^$]*€)?', code)[0] # 分离表达式与范围(如果有)
x_r = (-10, 10)
y_r = (-20, 20)
if range_ != '': # 定义了范围
ranges = range_[1:-1].split('|')
if len(ranges) in (1, 2): # 定义的范围正确
x_r = tuple(int(i) for i in ranges[0].split(','))
if len(ranges) == 2: # 定义了y范围
y_r = tuple(int(i) for i in ranges[1].split(','))
self.codes[index] = CrossMore.function_drawing( # 绘制函数图像
function=lambda x: eval(expression.split('=')[1]), x_range=x_r, y_range=y_r
)
else:
self.codes[index] = '<mark>该平台不支持扩展语法</mark>'
else: # 是突出块
self.codes[index] = f'<span class="block">{code}</span>'
def restore(self, new_text: str) -> str:
"""
将渲染好的代码重新放回处理好的正文
:param new_text: 处理好的正文
:return: 加上代码的文章
"""
for index, item in enumerate(self.codes):
new_text = re.sub(f'\0\1{index}\1\0', f'{item}', new_text, flags=re.DOTALL)
return new_text
class Syllabus:
"""
1. 找到提纲
2 找到符合若干个‘数字+点+数字’且首尾都是数字的行
每个提纲编号全文只能出现一次
"""
def __init__(self, text: str):
self.text = text
def __call__(self, *args, **kwargs) -> str:
return '\n'.join([
(lambda match, origen:
re.sub(f'^({match.groups()[0]})', # 按照提纲等级添加#和锚点
fr'{"#" * len(match.groups()[0].split("."))} \1{{#' + match.groups()[0] + '}', origen)
if match is not None else origen) # 对于不是提纲的行,直接返回原始字符
((lambda x: re.match(r'^([\d.]+) ', x) # 判断是否是提纲
if not any((x.startswith('.'), # 以.开头
re.search('\. ', x) is not None, # 存在.+空格
re.search('\.{2,}', x), # 存在连续的.
))
else None)(line), line) # 排除.在提纲号开头或结尾的情况
for line in self.text.splitlines() # 分割并遍历文本的每一行
])
class Basic:
def __init__(self, text: str):
self.text: str = text
@staticmethod
def strong_annotation(text: str) -> str:
"""
移除|=强注释=|
:param text: 原始文本
:return: 移除强注释后的文本
"""
return re.sub('\|=[\s\S]*=\|', '', text, re.DOTALL)
@staticmethod
def week_annotation(text: str) -> str:
"""
移除 // 弱注释
:param text: 原始文本
:return: 移除弱注释后的文本
"""
return re.sub('// .*?\n', '\n', text)
def indent(input_: Union[str, List, Tuple], indent_spaces: int = 4) -> str:
"""
给字符串中的每一行前面加上缩进。
:param input_: 原始字符串，可以包含多行。
:param indent_spaces: 每行前面要添加的空格数，默认为4。
:return: 带缩进的新字符串。
"""
# 使用字符串的splitlines()方法分割原始字符串为行列表,如果是可迭代对象则直接遍历
# 遍历行列表，给每行前面加上相应的缩进，并重新组合成字符串
return "\n".join(
f"{' ' * indent_spaces}{line}" for line in (lambda x: x.splitlines() if isinstance(x, str) else x)(input_))
def body(text: str) -> Tuple[str, Dict[str, str]]:
"""
渲染正文部分
:param text: 输入正文
:return: 输出渲染后的正文
"""
text = Basic.week_annotation(text) # 移除弱注释
text = Syllabus(text)() # 渲染提纲
text, values = Value(text)() # 提取变量并赋值到文本中
text = Style(text)() # 渲染字体样式
text = markdown.markdown(text, extensions=[
'markdown.extensions.extra', # 扩展语法
'markdown.extensions.codehilite', # 语法高亮拓展
'markdown.extensions.toc', # 自动生成目录
'markdown.extensions.admonition', # 警告扩展
'markdown.extensions.meta', # 元数据
]) # 渲染标准markdown
text = emoji.emojize(text) # 渲染Emoji
return text, values
def main(origen: str):
# 预处理
origen = Basic.strong_annotation(origen) # 移除强注释
code_block = CodeBlock(origen) # 获取代码内容
text = code_block() # 暂时移除代码
# 处理正文
text, values = body(text)
# 后处理
code_block.rendering(values) # 渲染代码
return code_block.restore(text) # 放回代码
if __name__ == '__main__':
# 开始计时
start_time = time.perf_counter_ns()
# 主程序
with open('README.md', encoding='utf-8') as test:
cd = main(test.read())
with open('README.html', 'w', encoding='utf-8') as html:
html.write(f"""<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>UTF-8编码示例</title>
{indent(HEAD)}
<!-- 可以在这里添加其他元数据和CSS链接 -->
</head>
<body>
{indent(BODY)}
{indent(cd, 4)}
</body>
</html>
""")
# 停止计时
end_time = time.perf_counter_ns()
# 输出用时
print("运行时间: {:.9f} 秒".format((end_time - start_time) / 1e9))