zulip/zerver/lib/bugdown/api_arguments_table_generat...

114 lines
4.0 KiB
Python

import re
import os
import ujson
from markdown.extensions import Extension
from markdown.preprocessors import Preprocessor
from typing import Any, Dict, Optional, List
import markdown
REGEXP = re.compile(r'\{generate_api_arguments_table\|\s*(.+?)\s*\|\s*(.+?)\s*\}')
class MarkdownArgumentsTableGenerator(Extension):
def __init__(self, configs: Optional[Dict[str, Any]]={}) -> None:
self.config = {
'base_path': ['.', 'Default location from which to evaluate relative paths for the JSON files.'],
}
for key, value in configs.items():
self.setConfig(key, value)
def extendMarkdown(self, md: markdown.Markdown, md_globals: Dict[str, Any]) -> None:
md.preprocessors.add(
'generate_api_arguments', APIArgumentsTablePreprocessor(md, self.getConfigs()), '_begin'
)
class APIArgumentsTablePreprocessor(Preprocessor):
def __init__(self, md: markdown.Markdown, config: Dict[str, Any]) -> None:
super(APIArgumentsTablePreprocessor, self).__init__(md)
self.base_path = config['base_path']
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:
json_filename = match.group(1)
doc_filename = match.group(2)
json_filename = os.path.expanduser(json_filename)
if not os.path.isabs(json_filename):
json_filename = os.path.normpath(os.path.join(self.base_path, json_filename))
try:
with open(json_filename, 'r') as fp:
json_obj = ujson.loads(fp.read())
arguments = json_obj[doc_filename]
text = self.render_table(arguments)
except Exception as e:
print('Warning: could not find file {}. Ignoring '
'statement. Error: {}'.format(json_filename, e))
# If the file cannot be opened, just substitute an empty line
# in place of the macro include line
lines[loc] = REGEXP.sub('', line)
break
# 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 render_table(self, arguments: List[Dict[str, Any]]) -> List[str]:
table = []
beginning = """
<table class="table">
<thead>
<tr>
<th>Argument</th>
<th>Example</th>
<th>Required</th>
<th>Description</th>
</tr>
</thead>
<tbody>
"""
tr = """
<tr>
<td><code>{argument}</code></td>
<td><code>{example}</code></td>
<td>{required}</td>
<td>{description}</td>
</tr>
"""
table.append(beginning)
md_engine = markdown.Markdown(extensions=[])
for argument in arguments:
table.append(tr.format(
argument=argument['argument'],
example=argument['example'],
required=argument['required'],
description=md_engine.convert(argument['description']),
))
table.append("</tbody>")
table.append("</table>")
return table
def makeExtension(*args: Any, **kwargs: str) -> MarkdownArgumentsTableGenerator:
return MarkdownArgumentsTableGenerator(kwargs)