706 lines
26 KiB
Python
706 lines
26 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import re
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from datetime import datetime
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import six
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import praw
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from praw.errors import InvalidSubreddit
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from kitchen.text.display import wrap
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from . import exceptions
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class Content(object):
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def get(self, index, n_cols):
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"""
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Grab the item at the given index, and format the text to fit a width of
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n columns.
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"""
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raise NotImplementedError
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def iterate(self, index, step, n_cols=70):
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"""
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Return an iterator that starts and the current index and increments
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by the given step.
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"""
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while True:
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if step < 0 and index < 0:
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# Hack to prevent displaying a submission's post if iterating
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# comments in the negative direction
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break
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try:
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yield self.get(index, n_cols=n_cols)
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except IndexError:
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break
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index += step
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@property
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def range(self):
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"""
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Return the minimm and maximum valid indicies.
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"""
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raise NotImplementedError
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@staticmethod
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def flatten_comments(comments, root_level=0):
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"""
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Flatten a PRAW comment tree while preserving the nested level of each
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comment via the `nested_level` attribute.
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"""
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stack = comments[:]
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for item in stack:
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item.nested_level = root_level
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retval = []
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while stack:
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item = stack.pop(0)
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# MoreComments item count should never be zero, but if it is then
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# discard the MoreComment object. Need to look into this further.
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if isinstance(item, praw.objects.MoreComments) and item.count == 0:
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continue
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# https://github.com/praw-dev/praw/issues/391
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# Attach children replies to parents. Children will have the
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# same parent_id, but with a suffix attached.
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# E.g.
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# parent_comment.id = c0tprcm
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# comment.parent_id = t1_c0tprcm
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if item.parent_id:
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level = None
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# Search through previous comments for a possible parent
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for parent in retval[::-1]:
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if level and parent.nested_level >= level:
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# Stop if we reach a sibling or a child, we know that
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# nothing before this point is a candidate for parent.
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break
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level = parent.nested_level
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if item.parent_id.endswith(parent.id):
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item.nested_level = parent.nested_level + 1
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# Otherwise, grab all of the attached replies and add them back to
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# the list of comments to parse
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if hasattr(item, 'replies'):
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for n in item.replies:
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n.nested_level = item.nested_level + 1
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stack[0:0] = item.replies
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retval.append(item)
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return retval
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@classmethod
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def strip_praw_comment(cls, comment):
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"""
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Parse through a submission comment and return a dict with data ready to
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be displayed through the terminal.
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"""
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data = {}
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data['object'] = comment
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if isinstance(comment, praw.objects.MoreComments):
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data['type'] = 'MoreComments'
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data['level'] = comment.nested_level
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data['count'] = comment.count
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data['body'] = 'More comments'
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data['hidden'] = True
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elif hasattr(comment, 'nested_level'):
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author = getattr(comment, 'author', '[deleted]')
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name = getattr(author, 'name', '[deleted]')
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sub = getattr(comment, 'submission', '[deleted]')
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sub_author = getattr(sub, 'author', '[deleted]')
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sub_name = getattr(sub_author, 'name', '[deleted]')
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flair = getattr(comment, 'author_flair_text', '')
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permalink = getattr(comment, 'permalink', None)
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stickied = getattr(comment, 'stickied', False)
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data['type'] = 'Comment'
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data['level'] = comment.nested_level
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data['body'] = comment.body
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data['created'] = cls.humanize_timestamp(comment.created_utc)
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data['score'] = '{0} pts'.format(
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'-' if comment.score_hidden else comment.score)
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data['author'] = name
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data['is_author'] = (name == sub_name)
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data['flair'] = flair
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data['likes'] = comment.likes
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data['gold'] = comment.gilded > 0
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data['permalink'] = permalink
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data['stickied'] = stickied
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data['hidden'] = False
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data['saved'] = comment.saved
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else:
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# Saved comments don't have a nested level and are missing a couple
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# of fields like ``submission``. As a result, we can only load a
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# subset of fields to avoid triggering a seperate api call to load
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# the full comment.
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author = getattr(comment, 'author', '[deleted]')
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stickied = getattr(comment, 'stickied', False)
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flair = getattr(comment, 'author_flair_text', '')
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data['type'] = 'SavedComment'
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data['level'] = None
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data['title'] = comment.body
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data['comments'] = ''
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data['url_full'] = comment._fast_permalink
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data['url'] = comment._fast_permalink
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data['nsfw'] = comment.over_18
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data['subreddit'] = six.text_type(comment.subreddit)
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data['url_type'] = 'selfpost'
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data['score'] = '{0} pts'.format(
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'-' if comment.score_hidden else comment.score)
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data['likes'] = comment.likes
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data['created'] = cls.humanize_timestamp(comment.created_utc)
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data['saved'] = comment.saved
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data['stickied'] = stickied
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data['gold'] = comment.gilded > 0
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data['author'] = author
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data['flair'] = flair
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return data
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@classmethod
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def strip_praw_submission(cls, sub):
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"""
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Parse through a submission and return a dict with data ready to be
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displayed through the terminal.
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Definitions:
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permalink - URL to the reddit page with submission comments.
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url_full - URL that the submission points to.
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url - URL that will be displayed on the subreddit page, may be
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"selfpost", "x-post submission", "x-post subreddit", or an
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external link.
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"""
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reddit_link = re.compile(
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r'https?://(www\.)?(np\.)?redd(it\.com|\.it)/r/.*')
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author = getattr(sub, 'author', '[deleted]')
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name = getattr(author, 'name', '[deleted]')
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flair = getattr(sub, 'link_flair_text', '')
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data = {}
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data['object'] = sub
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data['type'] = 'Submission'
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data['title'] = sub.title
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data['text'] = sub.selftext
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data['created'] = cls.humanize_timestamp(sub.created_utc)
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data['comments'] = '{0} comments'.format(sub.num_comments)
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data['score'] = '{0} pts'.format('-' if sub.hide_score else sub.score)
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data['author'] = name
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data['permalink'] = sub.permalink
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data['subreddit'] = six.text_type(sub.subreddit)
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data['flair'] = '[{0}]'.format(flair.strip(' []')) if flair else ''
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data['url_full'] = sub.url
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data['likes'] = sub.likes
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data['gold'] = sub.gilded > 0
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data['nsfw'] = sub.over_18
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data['stickied'] = sub.stickied
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data['hidden'] = False
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data['xpost_subreddit'] = None
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data['index'] = None # This is filled in later by the method caller
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data['saved'] = sub.saved
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if sub.url.split('/r/')[-1] == sub.permalink.split('/r/')[-1]:
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data['url'] = 'self.{0}'.format(data['subreddit'])
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data['url_type'] = 'selfpost'
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elif reddit_link.match(sub.url):
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# Strip the subreddit name from the permalink to avoid having
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# submission.subreddit.url make a separate API call
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url_parts = sub.url.split('/')
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data['xpost_subreddit'] = url_parts[4]
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data['url'] = 'self.{0}'.format(url_parts[4])
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if 'comments' in url_parts:
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data['url_type'] = 'x-post submission'
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else:
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data['url_type'] = 'x-post subreddit'
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else:
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data['url'] = sub.url
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data['url_type'] = 'external'
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return data
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@staticmethod
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def strip_praw_subscription(subscription):
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"""
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Parse through a subscription and return a dict with data ready to be
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displayed through the terminal.
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"""
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data = {}
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data['object'] = subscription
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if isinstance(subscription, praw.objects.Multireddit):
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data['type'] = 'Multireddit'
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data['name'] = subscription.path
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data['title'] = subscription.description_md
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else:
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data['type'] = 'Subscription'
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data['name'] = "/r/" + subscription.display_name
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data['title'] = subscription.title
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return data
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@staticmethod
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def humanize_timestamp(utc_timestamp, verbose=False):
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"""
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Convert a utc timestamp into a human readable relative-time.
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"""
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timedelta = datetime.utcnow() - datetime.utcfromtimestamp(utc_timestamp)
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seconds = int(timedelta.total_seconds())
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if seconds < 60:
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return 'moments ago' if verbose else '0min'
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minutes = seconds // 60
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if minutes < 60:
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return '%d minutes ago' % minutes if verbose else '%dmin' % minutes
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hours = minutes // 60
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if hours < 24:
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return '%d hours ago' % hours if verbose else '%dhr' % hours
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days = hours // 24
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if days < 30:
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return '%d days ago' % days if verbose else '%dday' % days
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months = days // 30.4
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if months < 12:
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return '%d months ago' % months if verbose else '%dmonth' % months
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years = months // 12
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return '%d years ago' % years if verbose else '%dyr' % years
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@staticmethod
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def wrap_text(text, width):
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"""
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Wrap text paragraphs to the given character width while preserving
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newlines.
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"""
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out = []
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for paragraph in text.splitlines():
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# Wrap returns an empty list when paragraph is a newline. In order
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# to preserve newlines we substitute a list containing an empty
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# string.
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lines = wrap(paragraph, width=width) or ['']
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out.extend(lines)
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return out
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class SubmissionContent(Content):
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"""
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Grab a submission from PRAW and lazily store comments to an internal
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list for repeat access.
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"""
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def __init__(self, submission, loader, indent_size=2, max_indent_level=8,
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order=None, max_comment_cols=120):
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submission_data = self.strip_praw_submission(submission)
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comments = self.flatten_comments(submission.comments)
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self.indent_size = indent_size
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self.max_indent_level = max_indent_level
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self.name = submission_data['permalink']
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self.order = order
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self._loader = loader
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self._submission = submission
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self._submission_data = submission_data
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self._comment_data = [self.strip_praw_comment(c) for c in comments]
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self._max_comment_cols = max_comment_cols
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@classmethod
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def from_url(cls, reddit, url, loader, indent_size=2, max_indent_level=8,
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order=None, max_comment_cols=120):
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url = url.replace('http:', 'https:') # Reddit forces SSL
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# Sometimes reddit will return a 403 FORBIDDEN when trying to access an
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# np link while using OAUTH. Cause is unknown.
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url = url.replace('https://np.', 'https://www.')
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submission = reddit.get_submission(url, comment_sort=order)
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return cls(submission, loader, indent_size, max_indent_level, order,
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max_comment_cols)
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@property
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def range(self):
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return -1, len(self._comment_data) - 1
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def get(self, index, n_cols=70):
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"""
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Grab the `i`th submission, with the title field formatted to fit inside
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of a window of width `n`
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"""
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if index < -1:
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raise IndexError
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elif index == -1:
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data = self._submission_data
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data['split_title'] = self.wrap_text(data['title'], width=n_cols-2)
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data['split_text'] = self.wrap_text(data['text'], width=n_cols-2)
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data['n_rows'] = len(data['split_title'] + data['split_text']) + 5
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data['h_offset'] = 0
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else:
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data = self._comment_data[index]
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indent_level = min(data['level'], self.max_indent_level)
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data['h_offset'] = indent_level * self.indent_size
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if data['type'] == 'Comment':
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width = min(n_cols - data['h_offset'], self._max_comment_cols)
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data['split_body'] = self.wrap_text(data['body'], width=width)
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data['n_rows'] = len(data['split_body']) + 1
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else:
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data['n_rows'] = 1
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return data
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def toggle(self, index, n_cols=70):
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"""
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Toggle the state of the object at the given index.
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If it is a comment, pack it into a hidden comment.
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If it is a hidden comment, unpack it.
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If it is more comments, load the comments.
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"""
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data = self.get(index)
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if data['type'] == 'Submission':
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# Can't hide the submission!
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pass
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elif data['type'] == 'Comment':
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cache = [data]
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count = 1
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for d in self.iterate(index + 1, 1, n_cols):
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if d['level'] <= data['level']:
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break
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count += d.get('count', 1)
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cache.append(d)
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comment = {
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'type': 'HiddenComment',
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'cache': cache,
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'count': count,
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'level': data['level'],
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'body': 'Hidden',
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'hidden': True}
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self._comment_data[index:index + len(cache)] = [comment]
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elif data['type'] == 'HiddenComment':
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self._comment_data[index:index + 1] = data['cache']
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elif data['type'] == 'MoreComments':
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with self._loader('Loading comments'):
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# Undefined behavior if using a nested loader here
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assert self._loader.depth == 1
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comments = data['object'].comments(update=True)
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if not self._loader.exception:
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comments = self.flatten_comments(comments, data['level'])
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comment_data = [self.strip_praw_comment(c) for c in comments]
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self._comment_data[index:index + 1] = comment_data
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else:
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raise ValueError('%s type not recognized' % data['type'])
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class SubredditContent(Content):
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"""
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Grab a subreddit from PRAW and lazily stores submissions to an internal
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list for repeat access.
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"""
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def __init__(self, name, submissions, loader, order=None, max_title_rows=4):
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self.name = name
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self.order = order
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self.max_title_rows = max_title_rows
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self._loader = loader
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self._submissions = submissions
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self._submission_data = []
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# Verify that content exists for the given submission generator.
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# This is necessary because PRAW loads submissions lazily, and
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# there is is no other way to check things like multireddits that
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# don't have a real corresponding subreddit object.
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try:
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self.get(0)
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except IndexError:
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full_name = self.name
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if self.order:
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full_name += '/' + self.order
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raise exceptions.NoSubmissionsError(full_name)
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@classmethod
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def from_name(cls, reddit, name, loader, order=None, query=None):
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"""
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Params:
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reddit (praw.Reddit): Instance of the reddit api.
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name (text): The name of the desired subreddit, user, multireddit,
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etc. In most cases this translates directly from the URL that
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reddit itself uses. This is what users will type in the command
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prompt when they navigate to a new location.
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loader (terminal.loader): Handler for the load screen that will be
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displayed when making http requests.
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order (text): If specified, the order that posts will be sorted in.
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For `top` and `controversial`, you can specify the time frame
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by including a dash, e.g. "top-year". If an order is not
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specified, it will be extracted from the name.
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query (text): Content to search for on the given subreddit or
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user's page.
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"""
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# TODO: refactor this into smaller methods
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# Strip leading, trailing, and redundant backslashes
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parts = [seg for seg in name.strip(' /').split('/') if seg]
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# Check for the resource type, assume /r/ as the default
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if len(parts) >= 3 and parts[2] == 'm':
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# E.g. /u/multi-mod/m/android
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resource_root, parts = '/'.join(parts[:3]), parts[3:]
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elif len(parts) > 1 and parts[0] in ['r', 'u', 'user', 'domain']:
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resource_root = parts.pop(0)
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else:
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resource_root = 'r'
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if resource_root == 'user':
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resource_root = 'u'
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# There should at most two parts left, the resource and the order
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if len(parts) == 1:
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resource, resource_order = parts[0], None
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elif len(parts) == 2:
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resource, resource_order = parts
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else:
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raise InvalidSubreddit('`{}` is an invalid format'.format(name))
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if not resource:
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# Praw does not correctly handle empty strings
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# https://github.com/praw-dev/praw/issues/615
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raise InvalidSubreddit('Subreddit cannot be empty')
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# If the order was explicitly passed in, it will take priority over
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# the order that was extracted from the name
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order = order or resource_order
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display_order = order
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display_name = '/'.join(['', resource_root, resource])
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# Split the order from the period E.g. controversial-all, top-hour
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if order and '-' in order:
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order, period = order.split('-', 1)
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else:
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period = None
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if order not in ['hot', 'top', 'rising', 'new', 'controversial', None]:
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raise InvalidSubreddit('Invalid order `%s`' % order)
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if period not in ['all', 'day', 'hour', 'month', 'week', 'year', None]:
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raise InvalidSubreddit('Invalid period `%s`' % period)
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if period and order not in ['top', 'controversial']:
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raise InvalidSubreddit('`%s` order does not allow sorting by'
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' period' % order)
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# On some objects, praw doesn't allow you to pass arguments for the
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# order and period. Instead you need to call special helper functions
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# such as Multireddit.get_controversial_from_year(). Build the method
|
|
# name here for convenience.
|
|
if period:
|
|
method_alias = 'get_{0}_from_{1}'.format(order, period)
|
|
elif order:
|
|
method_alias = 'get_{0}'.format(order)
|
|
else:
|
|
method_alias = 'get_hot'
|
|
|
|
# Here's where we start to build the submission generators
|
|
if query:
|
|
if resource_root == 'u':
|
|
search = '/r/{subreddit}/search'
|
|
author = reddit.user.name if resource == 'me' else resource
|
|
query = 'author:{0} {1}'.format(author, query)
|
|
subreddit = None
|
|
else:
|
|
search = resource_root + '/{subreddit}/search'
|
|
subreddit = None if resource == 'front' else resource
|
|
|
|
reddit.config.API_PATHS['search'] = search
|
|
submissions = reddit.search(query, subreddit=subreddit,
|
|
sort=order, period=period)
|
|
|
|
elif resource_root == 'domain':
|
|
order = order or 'hot'
|
|
submissions = reddit.get_domain_listing(
|
|
resource, sort=order, period=period, limit=None)
|
|
|
|
elif resource_root.endswith('/m'):
|
|
redditor = resource_root.split('/')[1]
|
|
multireddit = reddit.get_multireddit(redditor, resource)
|
|
submissions = getattr(multireddit, method_alias)(limit=None)
|
|
|
|
elif resource_root == 'u' and resource == 'me':
|
|
if not reddit.is_oauth_session():
|
|
raise exceptions.AccountError('Not logged in')
|
|
else:
|
|
order = order or 'new'
|
|
submissions = reddit.user.get_submitted(sort=order, limit=None)
|
|
|
|
elif resource_root == 'u' and resource == 'saved':
|
|
if not reddit.is_oauth_session():
|
|
raise exceptions.AccountError('Not logged in')
|
|
else:
|
|
order = order or 'new'
|
|
submissions = reddit.user.get_saved(sort=order, limit=None)
|
|
|
|
elif resource_root == 'u':
|
|
order = order or 'new'
|
|
period = period or 'all'
|
|
redditor = reddit.get_redditor(resource)
|
|
submissions = redditor.get_submitted(
|
|
sort=order, time=period, limit=None)
|
|
|
|
elif resource == 'front':
|
|
if order in (None, 'hot'):
|
|
submissions = reddit.get_front_page(limit=None)
|
|
elif period:
|
|
# For the front page, praw makes you send the period as `t`
|
|
# instead of calling reddit.get_hot_from_week()
|
|
method_alias = 'get_{0}'.format(order)
|
|
method = getattr(reddit, method_alias)
|
|
submissions = method(limit=None, params={'t': period})
|
|
else:
|
|
submissions = getattr(reddit, method_alias)(limit=None)
|
|
|
|
else:
|
|
subreddit = reddit.get_subreddit(resource)
|
|
submissions = getattr(subreddit, method_alias)(limit=None)
|
|
|
|
# For special subreddits like /r/random we want to replace the
|
|
# display name with the one returned by the request.
|
|
display_name = '/r/{0}'.format(subreddit.display_name)
|
|
|
|
# We made it!
|
|
return cls(display_name, submissions, loader, order=display_order)
|
|
|
|
@property
|
|
def range(self):
|
|
# Note that for subreddits, the submissions are generated lazily and
|
|
# there is no actual "end" index. Instead, we return the bottom index
|
|
# that we have loaded so far.
|
|
return 0, len(self._submission_data) - 1
|
|
|
|
def get(self, index, n_cols=70):
|
|
"""
|
|
Grab the `i`th submission, with the title field formatted to fit inside
|
|
of a window of width `n_cols`
|
|
"""
|
|
|
|
if index < 0:
|
|
raise IndexError
|
|
|
|
while index >= len(self._submission_data):
|
|
try:
|
|
with self._loader('Loading more submissions'):
|
|
submission = next(self._submissions)
|
|
if self._loader.exception:
|
|
raise IndexError
|
|
except StopIteration:
|
|
raise IndexError
|
|
else:
|
|
if hasattr(submission, 'title'):
|
|
data = self.strip_praw_submission(submission)
|
|
else:
|
|
# when submission is a saved commment
|
|
data = self.strip_praw_comment(submission)
|
|
|
|
data['index'] = len(self._submission_data) + 1
|
|
# Add the post number to the beginning of the title
|
|
data['title'] = '{0}. {1}'.format(data['index'], data['title'])
|
|
self._submission_data.append(data)
|
|
|
|
# Modifies the original dict, faster than copying
|
|
data = self._submission_data[index]
|
|
data['split_title'] = self.wrap_text(data['title'], width=n_cols)
|
|
if len(data['split_title']) > self.max_title_rows:
|
|
data['split_title'] = data['split_title'][:self.max_title_rows-1]
|
|
data['split_title'].append('(Not enough space to display)')
|
|
data['n_rows'] = len(data['split_title']) + 3
|
|
data['h_offset'] = 0
|
|
|
|
return data
|
|
|
|
|
|
class SubscriptionContent(Content):
|
|
|
|
def __init__(self, name, subscriptions, loader):
|
|
|
|
self.name = name
|
|
self.order = None
|
|
self._loader = loader
|
|
self._subscriptions = subscriptions
|
|
self._subscription_data = []
|
|
|
|
try:
|
|
self.get(0)
|
|
except IndexError:
|
|
raise exceptions.SubscriptionError('No content')
|
|
|
|
# Load 1024 subscriptions up front (one http request's worth)
|
|
# For most people this should be all of their subscriptions. Doing thi
|
|
# allows the user to jump to the end of the page with `G`.
|
|
if name != 'Popular Subreddits':
|
|
try:
|
|
self.get(1023)
|
|
except IndexError:
|
|
pass
|
|
|
|
@classmethod
|
|
def from_user(cls, reddit, loader, content_type='subreddit'):
|
|
if content_type == 'subreddit':
|
|
name = 'My Subreddits'
|
|
items = reddit.get_my_subreddits(limit=None)
|
|
elif content_type == 'multireddit':
|
|
name = 'My Multireddits'
|
|
# Multireddits are returned as a list
|
|
items = iter(reddit.get_my_multireddits())
|
|
elif content_type == 'popular':
|
|
name = 'Popular Subreddits'
|
|
items = reddit.get_popular_subreddits(limit=None)
|
|
else:
|
|
raise exceptions.SubscriptionError('Invalid type %s', content_type)
|
|
|
|
return cls(name, items, loader)
|
|
|
|
@property
|
|
def range(self):
|
|
return 0, len(self._subscription_data) - 1
|
|
|
|
def get(self, index, n_cols=70):
|
|
"""
|
|
Grab the `i`th object, with the title field formatted to fit
|
|
inside of a window of width `n_cols`
|
|
"""
|
|
|
|
if index < 0:
|
|
raise IndexError
|
|
|
|
while index >= len(self._subscription_data):
|
|
try:
|
|
with self._loader('Loading content'):
|
|
subscription = next(self._subscriptions)
|
|
if self._loader.exception:
|
|
raise IndexError
|
|
except StopIteration:
|
|
raise IndexError
|
|
else:
|
|
data = self.strip_praw_subscription(subscription)
|
|
self._subscription_data.append(data)
|
|
|
|
data = self._subscription_data[index]
|
|
data['split_title'] = self.wrap_text(data['title'], width=n_cols)
|
|
data['n_rows'] = len(data['split_title']) + 1
|
|
data['h_offset'] = 0
|
|
|
|
return data
|