esphome-docs/markdown.py

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#!/usr/bin/env python
# reStructuredText (RST) to GitHub-flavored Markdown converter
import re
import sys
from docutils import core, nodes, writers
from urllib import parse
class Translator(nodes.NodeVisitor):
def __init__(self, base_url, document):
nodes.NodeVisitor.__init__(self, document)
self.output = ""
self.indent = 0
self.preserve_newlines = False
self.base_url = base_url
def write(self, text):
self.output += text.replace("\n", "\n" + " " * self.indent)
def visit_document(self, node):
pass
def depart_document(self, node):
pass
def visit_section(self, node):
pass
def depart_section(self, node):
# Skip all sections except the first one.
raise nodes.StopTraversal
def visit_title(self, node):
self.version = re.match(r"(\d+\.\d+\.\d+).*", node.children[0]).group(1)
raise nodes.SkipChildren
def visit_title_reference(self, node):
raise Exception(
f'Markdown conversion: Improper format or not supported feature in "{node.parent.rawsource}". Check "`"'
)
def depart_title(self, node):
pass
def visit_Text(self, node):
if not self.preserve_newlines:
node = node.replace("\n", " ")
self.write(node)
def depart_Text(self, node):
pass
def visit_bullet_list(self, node):
self.write("\n")
pass
def depart_bullet_list(self, node):
pass
def visit_list_item(self, node):
self.write("* ")
self.indent += 2
def depart_list_item(self, node):
self.indent -= 2
self.write("\n\n")
def visit_paragraph(self, node):
pass
def depart_paragraph(self, node):
pass
def visit_reference(self, node):
# if not is_github_ref(node):
self.write("[")
def depart_reference(self, node):
# if not is_github_ref(node):
# self.write('](' + node['refuri'] + ')')
refid = node.get("refid")
if refid:
self.write("](" + parse.urljoin(self.base_url, "#" + refid) + ")")
else:
refuri = node.get("refuri")
if refuri:
# if refuri.startswith('../'):
# refuri = parse.urljoin(self.base_url, refuri)
# self.write('](' + refuri + ')')
self.write("](" + parse.urljoin(self.base_url, refuri) + ")")
def visit_emphasis(self, node):
self.write("*")
pass
def depart_emphasis(self, node):
self.write("*")
pass
def visit_target(self, node):
pass
def depart_target(self, node):
pass
def visit_literal(self, node):
self.write("`")
def depart_literal(self, node):
self.write("`")
def visit_literal_block(self, node):
self.write("\n\n```")
if "c++" in node["classes"]:
self.write("c++")
self.write("\n")
self.preserve_newlines = True
def depart_literal_block(self, node):
self.write("\n```\n")
self.preserve_newlines = False
def visit_inline(self, node):
pass
def depart_inline(self, node):
pass
def visit_image(self, node):
self.write("![](" + node["uri"] + ")")
def depart_image(self, node):
pass
def write_row(self, row, widths):
for i, entry in enumerate(row):
text = entry[0][0] if len(entry) > 0 else ""
if i != 0:
self.write("|")
self.write("{:{}}".format(text, widths[i]))
self.write("\n")
def visit_table(self, node):
table = node.children[0]
colspecs = table[:-2]
thead = table[-2]
tbody = table[-1]
widths = [int(cs["colwidth"]) for cs in colspecs]
sep = "|".join(["-" * w for w in widths]) + "\n"
self.write("\n\n")
self.write_row(thead[0], widths)
self.write(sep)
for row in tbody:
self.write_row(row, widths)
raise nodes.SkipChildren
def depart_table(self, node):
pass
def visit_strong(self, node):
self.write("**")
pass
def depart_strong(self, node):
self.write("**")
pass
def visit_block_quote(self, node):
pass
def depart_block_quote(self, node):
pass
class MDWriter(writers.Writer):
"""GitHub-flavored markdown writer"""
supported = ("md",)
"""Formats this writer supports."""
def translate(self):
translator = Translator(self.document)
self.document.walkabout(translator)
self.output = (translator.output, translator.version)
def convert(rst_path):
"""Converts RST file to Markdown."""
return core.publish_file(source_path=rst_path, writer=MDWriter())
if __name__ == "__main__":
convert(sys.argv[1])