我正在考虑从电子邮件线程中解析出最近的回复/消息，作为 zap 的一部分。
我找到了这个链接，但是如何在 Zap 中使用它？ https://github.com/zapier/email-reply-parser
即当我从 gmail 中提取一个线程时，我如何提取最近的消息？
这在 Zapier 的代码中是否可行？如果可以，如何实现？
例如
输入：
好的，我会在早上给你发电子邮件。
2012 年 11 月 16 日星期五下午 1:48，Zapier 写道：
我们的支持团队刚刚评论了您的公开票证： “嗨，Royce，我们早上可以聊聊你的问题吗？”
输出： 即解析后的电子邮件：
好的，我会在早上给你发电子邮件。
【问题讨论】：
首先：不能直接在代码步骤中使用它。 Python 代码步骤无权访问外部包。
也就是说，那个包只是 Python 代码，没有什么能阻止你将所有重要的代码复制到代码步骤中并以这种方式使用它。
值得注意的是，链接的代码相当陈旧，而且看起来无人维护，因此如果不进行修改，它是不可能工作的。
【讨论】：
我尝试修改了这个https://github.com/zapier/email-reply-parser，它似乎也很有效。
"""
email_reply_parser is a python library port of GitHub's Email Reply Parser.
For more information, visit https://github.com/zapier/email-reply-parser
"""
import re
class EmailReplyParser(object):
""" Represents a email message that is parsed.
"""
@staticmethod
def read(text):
""" Factory method that splits email into list of fragments
text - A string email body
Returns an EmailMessage instance
"""
return EmailMessage(text).read()
@staticmethod
def parse_reply(text):
""" Provides the reply portion of email.
text - A string email body
Returns reply body message
"""
return EmailReplyParser.read(text).reply
class EmailMessage(object):
""" An email message represents a parsed email body.
"""
SIG_REGEX = re.compile(r'(--|__|-\w)|(^Sent from my (\w+\s*){1,3})')
QUOTE_HDR_REGEX = re.compile('On.*wrote:$')
QUOTED_REGEX = re.compile(r'(>+)')
HEADER_REGEX = re.compile(r'^\*?(From|Sent|To|Subject):\*? .+')
_MULTI_QUOTE_HDR_REGEX = r'(?!On.*On\s.+?wrote:)(On\s(.+?)wrote:)'
MULTI_QUOTE_HDR_REGEX = re.compile(_MULTI_QUOTE_HDR_REGEX, re.DOTALL | re.MULTILINE)
MULTI_QUOTE_HDR_REGEX_MULTILINE = re.compile(_MULTI_QUOTE_HDR_REGEX, re.DOTALL)
def __init__(self, text):
self.fragments = []
self.fragment = None
self.text = text.replace('\r\n', '\n')
self.found_visible = False
def read(self):
""" Creates new fragment for each line
and labels as a signature, quote, or hidden.
Returns EmailMessage instance
"""
self.found_visible = False
is_multi_quote_header = self.MULTI_QUOTE_HDR_REGEX_MULTILINE.search(self.text)
if is_multi_quote_header:
self.text = self.MULTI_QUOTE_HDR_REGEX.sub(is_multi_quote_header.groups()[0].replace('\n', ''), self.text)
# Fix any outlook style replies, with the reply immediately above the signature boundary line
# See email_2_2.txt for an example
self.text = re.sub('([^\n])(?=\n ?[_-]{7,})', '\\1\n', self.text, re.MULTILINE)
self.lines = self.text.split('\n')
self.lines.reverse()
for line in self.lines:
self._scan_line(line)
self._finish_fragment()
self.fragments.reverse()
return self
@property
def reply(self):
""" Captures reply message within email
"""
reply = []
for f in self.fragments:
if not (f.hidden or f.quoted):
reply.append(f.content)
return '\n'.join(reply)
def _scan_line(self, line):
""" Reviews each line in email message and determines fragment type
line - a row of text from an email message
"""
is_quote_header = self.QUOTE_HDR_REGEX.match(line) is not None
is_quoted = self.QUOTED_REGEX.match(line) is not None
is_header = is_quote_header or self.HEADER_REGEX.match(line) is not None
if self.fragment and len(line.strip()) == 0:
if self.SIG_REGEX.match(self.fragment.lines[-1].strip()):
self.fragment.signature = True
self._finish_fragment()
if self.fragment \
and ((self.fragment.headers == is_header and self.fragment.quoted == is_quoted) or
(self.fragment.quoted and (is_quote_header or len(line.strip()) == 0))):
self.fragment.lines.append(line)
else:
self._finish_fragment()
self.fragment = Fragment(is_quoted, line, headers=is_header)
def quote_header(self, line):
""" Determines whether line is part of a quoted area
line - a row of the email message
Returns True or False
"""
return self.QUOTE_HDR_REGEX.match(line[::-1]) is not None
def _finish_fragment(self):
""" Creates fragment
"""
if self.fragment:
self.fragment.finish()
if self.fragment.headers:
# Regardless of what's been seen to this point, if we encounter a headers fragment,
# all the previous fragments should be marked hidden and found_visible set to False.
self.found_visible = False
for f in self.fragments:
f.hidden = True
if not self.found_visible:
if self.fragment.quoted \
or self.fragment.headers \
or self.fragment.signature \
or (len(self.fragment.content.strip()) == 0):
self.fragment.hidden = True
else:
self.found_visible = True
self.fragments.append(self.fragment)
self.fragment = None
class Fragment(object):
""" A Fragment is a part of
an Email Message, labeling each part.
"""
def __init__(self, quoted, first_line, headers=False):
self.signature = False
self.headers = headers
self.hidden = False
self.quoted = quoted
self._content = None
self.lines = [first_line]
def finish(self):
""" Creates block of content with lines
belonging to fragment.
"""
self.lines.reverse()
self._content = '\n'.join(self.lines)
self.lines = None
@property
def content(self):
return self._content.strip()
return {'emailstring': EmailReplyParser.parse_reply(input_data['body'])}
【讨论】：