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markdown_maker.py
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markdown_maker.py
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"""
desc:
将html内容转为markdown内容, 图片上传到七牛
auth:
Alan
requirements:
pip install qiniu requests beautifulsoup4
how to use:
查看README.md
"""
import re
import warnings
import random
from qiniu import Auth, put_file, etag, urlsafe_base64_encode
import os
import hashlib
import pathlib
import requests
import shutil
from mimetypes import guess_extension
from bs4 import BeautifulSoup
import configparser
# markdown 标签
MARKDOWN_ELEMENTS = {
'h1': ('\n# ', '\n'),
'h2': ('\n## ', '\n'),
'h3': ('\n### ', '\n'),
'h4': ('\n#### ', '\n'),
'h5': ('\n##### ', '\n'),
'h6': ('\n###### ', '\n'),
'code': ('`', '`'),
'ul': ('', ''),
'ol': ('', ''),
'li': ('- ', ''),
'blockquote': ('\n> ', '\n'),
'em': ('*', '*'),
'strong': ('**', '**'),
'block_code': ('\n```\n', '\n```\n'),
'span': ('', ''),
'p': ('\n', '\n'),
'p_with_out_class': ('\n', '\n'),
'inline_p': ('', ''),
'inline_p_with_out_class': ('', ''),
'b': ('**', '**'),
'i': ('*', '*'),
'del': ('~~', '~~'),
'hr': ('\n---', '\n\n'),
'thead': ('\n', '|------\n'),
'tbody': ('\n', '\n'),
'td': ('|', ''),
'th': ('|', ''),
'tr': ('', '\n'),
'table': ('', '\n'),
'e_p': ('', '\n')
}
# 外部标签
OUTLINE_ELEMENTS = {
'h1': '<h1.*?>(.*?)</h1>',
'h2': '<h2.*?>(.*?)</h2>',
'h3': '<h3.*?>(.*?)</h3>',
'h4': '<h4.*?>(.*?)</h4>',
'h5': '<h5.*?>(.*?)</h5>',
'h6': '<h6.*?>(.*?)</h6>',
'hr': '<hr/>',
'blockquote': '<blockquote.*?>(.*?)</blockquote>',
'ul': '<ul.*?>(.*?)</ul>',
'ol': '<ol.*?>(.*?)</ol>',
# 'block_code': '<pre.*?><code.*?>(.*?)</code></pre>',
'block_code': '<pre(.*?)>(.*?)</pre>',
'p': '<p\s.*?>(.*?)</p>',
'p_with_out_class': '<p>(.*?)</p>',
'thead': '<thead.*?>(.*?)</thead>',
'tr': '<tr.*?>(.*?)</tr>'
}
# 内嵌标签
INLINE_ELEMENTS = {
'td': '<td.*?>((.|\n)*?)</td>', # td element may span lines
'tr': '<tr.*?>((.|\n)*?)</tr>',
'th': '<th.*?>(.*?)</th>',
'b': '<b.*?>(.*?)</b>',
'i': '<i.*?>(.*?)</i>',
'del': '<del.*?>(.*?)</del>',
'inline_p': '<p\s.*?>(.*?)</p>',
'inline_p_with_out_class': '<p>(.*?)</p>',
'code': '<code.*?>(.*?)</code>',
'span': '<span.*?>(.*?)</span>',
'ul': '<ul.*?>(.*?)</ul>',
'ol': '<ol.*?>(.*?)</ol>',
'li': '<li.*?>(.*?)</li>',
'img': '<img.*?src="(.*?)".*?>(.*?)</img>',
'img_single': '<img.*?src="(.*?)".*?/>',
'img_single_no_close': '<img.*?src="(.*?)".*?>',
'a': '<a.*?href="(.*?)".*?>(.*?)</a>',
'em': '<em.*?>(.*?)</em>',
'strong': '<strong.*?>(\s*)(.*?)(\s*)</strong>',
'tbody': '<tbody.*?>((.|\n)*)</tbody>',
}
# 需要删除的标签
DELETE_ELEMENTS = [
'<span.*?>',
'</span>',
'<div.*?>',
'</div>',
'<br clear="none"/>',
'<center.*?>',
'</center>'
]
tmp_files_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'tmp_files')
md_files_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'md_files')
# 生成随机headers
def rand_header():
head_connection = ['Keep-Alive', 'close']
head_accept = ['text/html, application/xhtml+xml, */*']
head_accept_language = ['zh-CN,fr-FR;q=0.5', 'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3']
head_user_agent = ['Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko',
'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36',
'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; rv:11.0) like Gecko)',
'Mozilla/5.0 (Windows; U; Windows NT 5.2) Gecko/2008070208 Firefox/3.0.1',
'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070309 Firefox/2.0.0.3',
'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070803 Firefox/1.5.0.12',
'Opera/9.27 (Windows NT 5.2; U; zh-cn)',
'Mozilla/5.0 (Macintosh; PPC Mac OS X; U; en) Opera 8.0',
'Opera/8.0 (Macintosh; PPC Mac OS X; U; en)',
'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080219 Firefox/2.0.0.12 Navigator/9.0.0.6',
'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0)',
'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)',
'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E)',
'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Maxthon/4.0.6.2000 Chrome/26.0.1410.43 Safari/537.1 ',
'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E; QQBrowser/7.3.9825.400)',
'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0 ',
'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.92 Safari/537.1 LBBROWSER',
'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; BIDUBrowser 2.x)',
'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.11 TaoBrowser/3.0 Safari/536.11']
header = {
'Connection': head_connection[0],
'Accept': head_accept[0],
'Accept-Language': head_accept_language[1],
'User-Agent': head_user_agent[random.randrange(0, len(head_user_agent))]
}
return header
# 七牛
class QiNiu(object):
def __init__(self, access_key, secret_key, domain, bucket_name):
self.access_key = access_key
self.secret_key = secret_key
self.auth = self.get_auth()
self.token = None
self.domain = domain
self.bucket_name = bucket_name
def get_auth(self):
q = Auth(self.access_key, self.secret_key)
return q
def get_token(self, key_name):
self.token = self.auth.upload_token(self.bucket_name, key_name, 3600)
def upload_file(self, local_file, key_name=None):
if not key_name:
ext = pathlib.Path(local_file).suffix
hash_name = self.hash_file(local_file)
key_name = hash_name + ext
if not self.token:
self.get_token(key_name)
ret, info = put_file(self.token, key_name, local_file)
return ret, info
def hash_file(self, local_file):
hasher = hashlib.md5()
with open(local_file, 'rb') as f:
buf = f.read()
hasher.update(buf)
return hasher.hexdigest()
def upload_url_file(self, pic_url, save_path):
try:
r = requests.get(pic_url, stream=True)
if r.status_code == 200:
guess = guess_extension(r.headers['content-type'])
save_file = os.path.join(save_path, 'tmp' + guess)
with open(save_file, 'wb') as f:
r.raw.decode_content = True
shutil.copyfileobj(r.raw, f)
ret, info = self.upload_file(save_file)
if info.status_code == 200:
return self.domain+ret['key']
else:
return None
except:
return pic_url
# 生成标签元素
class Element(object):
def __init__(self, start_pos, end_pos, content, tag, class_=None, qu_niu=None):
self.start_pos = start_pos # 标签起始位置
self.end_pos = end_pos # 标签结束位置
self.content = content.strip() # 标签内容
self.tag = tag # 标签名称
self.class_ = class_
self.qi_niu = qu_niu
self.parse_inline() # 解析内嵌标签
def __str__(self):
# 返回markdown格式的内容/判断block_code情况
if self.tag == 'block_code' and self.class_:
try:
lang_code = re.findall(r'class="brush:(.*?);toolbar:false"', self.class_)[0]
wrapper = MARKDOWN_ELEMENTS.get(self.tag)
self._result = '\n```{}\n{}{}'.format(lang_code, self.content, wrapper[1])
except:
wrapper = MARKDOWN_ELEMENTS.get(self.tag)
self._result = '{}{}{}'.format(wrapper[0], self.content, wrapper[1])
else:
wrapper = MARKDOWN_ELEMENTS.get(self.tag)
self._result = '{}{}{}'.format(wrapper[0], self.content, wrapper[1])
return self._result
# 解析主方法
def parse_inline(self):
# 转义字符
self.content = self.content.replace('\r', '') # windows \r character
self.content = self.content.replace('\xc2\xa0', ' ') # no break space
self.content = self.content.replace('"', '\"') # html quote mark
self.content = self.content.replace(' ', '') # non-breaking space
self.content = self.content.replace(''', '\'') # apostrophe
self.content = self.content.replace('<', '<')
self.content = self.content.replace('>', '>')
if self.tag == "table": # for removing tbody
self.content = re.sub(INLINE_ELEMENTS['tbody'], '\g<1>', self.content)
INLINE_ELEMENTS_LIST_KEYS = list(INLINE_ELEMENTS.keys())
INLINE_ELEMENTS_LIST_KEYS.sort()
for tag in INLINE_ELEMENTS_LIST_KEYS:
pattern = INLINE_ELEMENTS[tag]
if tag == 'a':
self.content = re.sub(pattern, '[\g<2>](\g<1>)', self.content, count=re.M, flags=re.S)
# 上传图片至七牛并返回url生成到markdown 文档
elif tag == 'img':
result = re.findall(pattern, self.content)
if result:
try:
img_url = self.qi_niu.upload_url_file(pic_url=result[0][0], save_path=tmp_files_path)
except:
img_url = None
if img_url:
self.content = re.sub(pattern, ''.format(img_url), self.content)
else:
self.content = re.sub(pattern, '', self.content, count=re.M, flags=re.S)
else:
self.content = re.sub(pattern, '', self.content, count=re.M, flags=re.S)
elif tag == 'img_single':
result = re.findall(pattern, self.content)
if result:
try:
img_url = self.qi_niu.upload_url_file(pic_url=result[0], save_path=tmp_files_path)
except:
img_url = None
if img_url:
self.content = re.sub(pattern, ''.format(img_url), self.content, count=re.M, flags=re.S)
else:
self.content = re.sub(pattern, '', self.content)
else:
self.content = re.sub(pattern, '', self.content, count=re.M, flags=re.S)
elif tag == 'img_single_no_close':
result = re.findall(pattern, self.content)
if result:
try:
img_url = self.qi_niu.upload_url_file(pic_url=result[0], save_path=tmp_files_path)
except:
img_url = None
if img_url:
self.content = re.sub(pattern, ''.format(img_url), self.content, count=re.M, flags=re.S)
else:
self.content = re.sub(pattern, '', self.content)
else:
self.content = re.sub(pattern, '', self.content)
elif self.tag == 'ul' and tag == 'li':
self.content = re.sub(pattern, '- \g<1>', self.content)
elif self.tag == 'ol' and tag == 'li':
self.content = re.sub(pattern, '1. \g<1>', self.content)
elif self.tag == 'thead' and tag == 'tr':
self.content = re.sub(pattern, '\g<1>\n', self.content.replace('\n', ''))
elif self.tag == 'tr' and tag == 'th':
self.content = re.sub(pattern, '|\g<1>', self.content.replace('\n', ''))
elif self.tag == 'tr' and tag == 'td':
self.content = re.sub(pattern, '|\g<1>|', self.content.replace('\n', ''))
self.content = self.content.replace("||", "|") # end of column also needs a pipe
elif self.tag == 'table' and tag == 'td':
self.content = re.sub(pattern, '|\g<1>|', self.content)
self.content = self.content.replace("||", "|") # end of column also needs a pipe
self.content = self.content.replace('|\n\n', '|\n') # replace double new line
self.construct_table()
else:
wrapper = MARKDOWN_ELEMENTS.get(tag)
if tag == 'strong':
self.content = re.sub(pattern, '{}\g<2>{}'.format(wrapper[0], wrapper[1]), self.content)
else:
self.content = re.sub(pattern, '{}\g<1>{}'.format(wrapper[0], wrapper[1]), self.content)
# 生成markdown格式的table
def construct_table(self):
# this function, after self.content has gained | for table entries,
# adds the |---| in markdown to create a proper table
count = 1
temp = self.content.split('\n', 3)
for elt in temp:
if elt != "":
count = elt.count("|") # count number of pipes
break
pipe = "\n|" # beginning \n for safety
for i in range(count - 1):
pipe += "---|"
pipe += "\n"
self.content = pipe + pipe + self.content + "\n" # TODO: column titles?
self.content = self.content.replace('|\n\n', '|\n') # replace double new line
self.content = self.content.replace("<br/>\n", "<br/>") # end of column also needs a pipe
class MarkdownMaker(object):
def __init__(self, html='', folder='', file='', qi_niu=None):
self.html = html # actual data
self.folder = folder
self.file = file
self.qi_niu = qi_niu
def convert(self, html=''):
if html == '':
html = self.html
# main function here
elements = []
for tag, pattern in OUTLINE_ELEMENTS.items():
# re.I 忽略大小写/ re.M 多行模式/ re.S 即为'.'并且包括换行符在内的任意字符（'.'不包括换行符）
for m in re.finditer(pattern, html, re.I | re.S | re.M):
# now m contains the pattern without the tag
if tag == 'block_code':
try:
content = ''.join(m.groups()[1])
class_ = m.groups()[0]
except:
content = ''.join(m.groups())
class_ = None
else:
content = ''.join(m.groups())
class_ = None
element = Element(start_pos=m.start(),
end_pos=m.end(),
content=content,
tag=tag,
class_=class_,
qu_niu=self.qi_niu
)
can_append = True
# 如果当前匹配的内容已在解析的elements组内的某一个element里，则无需添加至elements
# 如果当前匹配的内容包含某个已解析在elements组内的某一个element, 则移除这个element,并将新匹配的内容添加至elements
for e in elements:
if e.start_pos < m.start() and e.end_pos > m.end():
can_append = False
elif e.start_pos > m.start() and e.end_pos < m.end():
elements.remove(e)
if can_append:
elements.append(element)
# 根据起始位置对内容排序并拼接
elements.sort(key=lambda element: element.start_pos)
self._markdown = ''.join([str(e) for e in elements])
# 删除指定标签内容
for index, element in enumerate(DELETE_ELEMENTS):
self._markdown = re.sub(element, '', self._markdown)
return self._markdown
@property
def markdown(self):
self.convert(self.html)
return self._markdown
def export(self, folder=False):
if len(self.file) < 1:
warnings.warn("file not specified, renamed to tmp.md")
file = "tmp.md"
else:
file = self.file.replace('.html', '.md') # rename to md
if len(self.folder) < 2:
warnings.warn("folder not specified, will save to pwd")
elif not folder:
file = self.folder + '/' + file
else: # if folder is specified
file = folder + '/' + file
f = open(file, 'w')
f.write(self._markdown)
f.close()
if __name__ == '__main__':
try:
config = configparser.ConfigParser()
config.read('config.txt')
access_key = config.get('QINIU', 'access_key')
secret_key = config.get('QINIU', 'secret_key')
domain = config.get('QINIU', 'domain')
bucket_name = config.get('QINIU', 'bucket_name')
upload_qiniu = True
except Exception as error:
upload_qiniu = False
access_key, secret_key, domain, bucket_name = '', '', '', ''
html_url = 'http://fualan.com/blog/article/12/'
article = requests.get(html_url)
soup = BeautifulSoup(article.text, "html.parser")
article_content = soup.find("section", class_="article typo")
if access_key and secret_key and domain and bucket_name:
# 图片上传到七牛, 指定access_key, secret_key, bucket_name
qi_niu = QiNiu(access_key='access_key',
secret_key='secret_key',
domain='http://domain/', bucket_name='bucket')
markdown_content = MarkdownMaker(article_content.__str__(), qi_niu=qi_niu).markdown
print(markdown_content)
else:
# 转换格式
markdown_content = MarkdownMaker(article_content.__str__()).markdown
print(markdown_content)