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43 lines
1.6 KiB
43 lines
1.6 KiB
from panflute import Element, Block, Inline, Null, Str, Doc, convert_text, Para, Plain, Span, Space
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import re
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from typing import Union
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# It sometimes happens that an element contains a single paragraph or even a
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# single plaintext line. It can be sometimes useful to extract this single
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# paragraph, which is inline.
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def inlinify(e: Element) -> Union[list[Element], None]:
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if len(e.content) == 1 and (isinstance(e.content[0], Para) or isinstance(e.content[0], Plain)):
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return e.content[0].content
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# In transform, inline elements cannot be replaced with Block ones and also
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# cannot be removed from the tree entirely, because that would mess up the
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# iteration process through the tree. We replace them with null elements
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# instead which never make it to the output.
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def nullify(e: Element) -> Union[Str, Null]:
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if isinstance(e, Inline):
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return Str("")
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else:
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return Null()
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def parse_string(s: str) -> list[Union[Str, Space]]:
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words = s.split(" ")
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output = []
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first_word, *words = words
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if first_word != "":
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output.append(Str(first_word))
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for word in words:
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output.append(Space())
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if word != "":
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output.append(Str(word))
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return output
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# A helper function to import markdown using panflute (which calls pandoc). If
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# we ever want to disable or enable some of panflute's markdown extensions,
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# this is the place to do it.
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def import_md(s: str, standalone: bool=True) -> Union[Doc, list[Element]]:
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return convert_text(s, standalone=standalone, input_format="markdown-definition_lists-latex_macros", extra_args=["--strip-comments"])
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def import_md_list(s: str) -> list[Element]:
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return import_md(s, standalone=False)
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