151 lines
3.7 KiB
Python
151 lines
3.7 KiB
Python
# reStructuredText (RST) to GitHub-flavored Markdown converter
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import re
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from docutils import core, nodes, writers
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def is_github_ref(node):
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return re.match('https://github.com/.*/(issues|pull)/.*', node['refuri'])
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class Translator(nodes.NodeVisitor):
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def __init__(self, document):
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nodes.NodeVisitor.__init__(self, document)
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self.output = ''
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self.indent = 0
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self.preserve_newlines = False
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def write(self, text):
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self.output += text.replace('\n', '\n' + ' ' * self.indent)
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def visit_document(self, node):
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pass
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def depart_document(self, node):
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pass
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def visit_section(self, node):
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pass
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def depart_section(self, node):
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# Skip all sections except the first one.
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raise nodes.StopTraversal
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def visit_title(self, node):
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self.version = re.match(r'(\d+\.\d+\.\d+).*', node.children[0]).group(1)
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raise nodes.SkipChildren
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def depart_title(self, node):
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pass
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def visit_Text(self, node):
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if not self.preserve_newlines:
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node = node.replace('\n', ' ')
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self.write(node)
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def depart_Text(self, node):
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pass
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def visit_bullet_list(self, node):
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pass
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def depart_bullet_list(self, node):
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pass
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def visit_list_item(self, node):
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self.write('* ')
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self.indent += 2
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def depart_list_item(self, node):
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self.indent -= 2
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self.write('\n\n')
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def visit_paragraph(self, node):
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pass
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def depart_paragraph(self, node):
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pass
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def visit_reference(self, node):
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if not is_github_ref(node):
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self.write('[')
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def depart_reference(self, node):
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if not is_github_ref(node):
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self.write('](' + node['refuri'] + ')')
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def visit_target(self, node):
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pass
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def depart_target(self, node):
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pass
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def visit_literal(self, node):
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self.write('`')
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def depart_literal(self, node):
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self.write('`')
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def visit_literal_block(self, node):
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self.write('\n\n```')
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if 'c++' in node['classes']:
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self.write('c++')
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self.write('\n')
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self.preserve_newlines = True
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def depart_literal_block(self, node):
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self.write('\n```\n')
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self.preserve_newlines = False
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def visit_inline(self, node):
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pass
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def depart_inline(self, node):
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pass
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def visit_image(self, node):
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self.write('')
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def depart_image(self, node):
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pass
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def write_row(self, row, widths):
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for i, entry in enumerate(row):
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text = entry[0][0] if len(entry) > 0 else ''
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if i != 0:
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self.write('|')
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self.write('{:{}}'.format(text, widths[i]))
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self.write('\n')
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def visit_table(self, node):
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table = node.children[0]
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colspecs = table[:-2]
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thead = table[-2]
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tbody = table[-1]
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widths = [int(cs['colwidth']) for cs in colspecs]
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sep = '|'.join(['-' * w for w in widths]) + '\n'
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self.write('\n\n')
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self.write_row(thead[0], widths)
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self.write(sep)
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for row in tbody:
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self.write_row(row, widths)
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raise nodes.SkipChildren
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def depart_table(self, node):
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pass
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class MDWriter(writers.Writer):
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"""GitHub-flavored markdown writer"""
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supported = ('md',)
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"""Formats this writer supports."""
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def translate(self):
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translator = Translator(self.document)
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self.document.walkabout(translator)
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self.output = (translator.output, translator.version)
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def convert(rst_path):
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"""Converts RST file to Markdown."""
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return core.publish_file(source_path=rst_path, writer=MDWriter())
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