zulip/zerver/lib/markdown/help_relative_links.py

117 lines
3.8 KiB
Python

import re
from typing import Any, List, Match, Optional
from markdown import Markdown
from markdown.extensions import Extension
from markdown.preprocessors import Preprocessor
# There is a lot of duplicated code between this file and
# help_settings_links.py. So if you're making a change here consider making
# it there as well.
REGEXP = re.compile(r"\{relative\|(?P<link_type>.*?)\|(?P<key>.*?)\}")
gear_info = {
# The pattern is key: [name, link]
# key is from REGEXP: `{relative|gear|key}`
# name is what the item is called in the gear menu: `Select **name**.`
# link is used for relative links: `Select [name](link).`
"manage-streams": ["Manage streams", "/#streams/subscribed"],
"settings": ["Personal Settings", "/#settings/profile"],
"manage-organization": ["Manage organization", "/#organization/organization-profile"],
"integrations": ["Integrations", "/integrations"],
"stats": ["Usage statistics", "/stats"],
"plans": ["Plans and pricing", "/plans"],
"billing": ["Billing", "/billing"],
"invite": ["Invite users", "/#invite"],
}
gear_instructions = """
1. Click on the **gear** (<i class="fa fa-cog"></i>) icon in the upper
right corner of the web or desktop app.
1. Select {item}.
"""
def gear_handle_match(key: str) -> str:
if relative_help_links:
item = f"[{gear_info[key][0]}]({gear_info[key][1]})"
else:
item = f"**{gear_info[key][0]}**"
return gear_instructions.format(item=item)
stream_info = {
"all": ["All streams", "/#streams/all"],
"subscribed": ["Your streams", "/#streams/subscribed"],
}
stream_instructions_no_link = """
1. Click on the **gear** (<i class="fa fa-cog"></i>) icon in the upper
right corner of the web or desktop app.
1. Click **Manage streams**.
"""
def stream_handle_match(key: str) -> str:
if relative_help_links:
return f"1. Go to [{stream_info[key][0]}]({stream_info[key][1]})."
if key == "all":
return stream_instructions_no_link + "\n\n1. Click **All streams** in the upper left."
return stream_instructions_no_link
LINK_TYPE_HANDLERS = {
"gear": gear_handle_match,
"stream": stream_handle_match,
}
class RelativeLinksHelpExtension(Extension):
def extendMarkdown(self, md: Markdown) -> None:
"""Add RelativeLinksHelpExtension to the Markdown instance."""
md.registerExtension(self)
md.preprocessors.register(RelativeLinks(), "help_relative_links", 520)
relative_help_links: Optional[bool] = None
def set_relative_help_links(value: bool) -> None:
global relative_help_links
relative_help_links = value
class RelativeLinks(Preprocessor):
def run(self, lines: List[str]) -> List[str]:
done = False
while not done:
for line in lines:
loc = lines.index(line)
match = REGEXP.search(line)
if match:
text = [self.handleMatch(match)]
# The line that contains the directive to include the macro
# may be preceded or followed by text or tags, in that case
# we need to make sure that any preceding or following text
# stays the same.
line_split = REGEXP.split(line, maxsplit=0)
preceding = line_split[0]
following = line_split[-1]
text = [preceding, *text, following]
lines = lines[:loc] + text + lines[loc + 1 :]
break
else:
done = True
return lines
def handleMatch(self, match: Match[str]) -> str:
return LINK_TYPE_HANDLERS[match.group("link_type")](match.group("key"))
def makeExtension(*args: Any, **kwargs: Any) -> RelativeLinksHelpExtension:
return RelativeLinksHelpExtension(*args, **kwargs)