166 lines
4.2 KiB
Python
166 lines
4.2 KiB
Python
__author__ = "Peter Molnar"
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__copyright__ = "Copyright 2017-2019, Peter Molnar"
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__license__ = "apache-2.0"
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__maintainer__ = "Peter Molnar"
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__email__ = "mail@petermolnar.net"
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import subprocess
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import logging
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import hashlib
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import os
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import settings
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class Pandoc(str):
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in_format = "html"
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in_options = []
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out_format = "plain"
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out_options = []
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columns = None
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@property
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def hash(self):
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return str(hashlib.sha1(self.source.encode()).hexdigest())
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@property
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def cachefile(self):
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return os.path.join(
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settings.tmpdir, "%s_%s.pandoc" % (self.__class__.__name__, self.hash)
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)
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@property
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def cache(self):
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if not os.path.exists(self.cachefile):
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return False
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with open(self.cachefile, "rt") as f:
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self.result = f.read()
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return True
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def __init__(self, text):
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self.source = text
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if self.cache:
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return
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conv_to = "--to=%s" % (self.out_format)
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if len(self.out_options):
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conv_to = "%s%s" % (conv_to, "".join(self.out_options))
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conv_from = "--from=%s" % (self.in_format)
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if len(self.in_options):
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conv_from = "%s%s" % (conv_from, "".join(self.in_options))
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is_pandoc_version2 = False
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try:
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version = subprocess.check_output(["pandoc", "-v"])
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if version.startswith(b"pandoc 2"):
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is_pandoc_version2 = True
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except OSError:
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print("Error: pandoc is not installed!")
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cmd = ["pandoc", "-o-", conv_to, conv_from, "--no-highlight"]
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if is_pandoc_version2:
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# Only pandoc v2 and higher support quiet param
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cmd.append("--quiet")
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if self.columns:
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cmd.append(self.columns)
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p = subprocess.Popen(
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tuple(cmd),
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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)
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stdout, stderr = p.communicate(input=text.encode())
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if stderr:
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logging.warning("Error during pandoc covert:\n\t%s\n\t%s", cmd, stderr)
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r = stdout.decode("utf-8").strip()
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self.result = r
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with open(self.cachefile, "wt") as f:
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f.write(self.result)
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def __str__(self):
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return str(self.result)
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def __repr__(self):
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return str(self.result)
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class PandocMD2HTML(Pandoc):
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in_format = "markdown"
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in_options = [
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"+footnotes",
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"+pipe_tables",
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"+strikeout",
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# 'superscript',
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# 'subscript',
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"+raw_html",
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"+definition_lists",
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"+backtick_code_blocks",
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"+fenced_code_attributes",
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"+shortcut_reference_links",
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"+lists_without_preceding_blankline",
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"+autolink_bare_uris",
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"-smart",
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]
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out_format = "html5"
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out_options = []
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class PandocHTML2MD(Pandoc):
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in_format = "html"
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in_options = []
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out_format = "markdown"
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out_options = [
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"+footnotes",
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"+pipe_tables",
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"+strikeout",
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"+raw_html",
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"+definition_lists",
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"+backtick_code_blocks",
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"+fenced_code_attributes",
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"+shortcut_reference_links",
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"+lists_without_preceding_blankline",
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"+autolink_bare_uris",
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"-smart",
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]
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class PandocMD2TXT(Pandoc):
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in_format = "markdown"
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in_options = [
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"+footnotes",
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"+pipe_tables",
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"+strikeout",
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"+raw_html",
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"+definition_lists",
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"+backtick_code_blocks",
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"+fenced_code_attributes",
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"+shortcut_reference_links",
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"+lists_without_preceding_blankline",
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"+autolink_bare_uris",
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"-smart",
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]
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out_format = "markdown"
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out_options = [
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"+footnotes",
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"+pipe_tables",
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"+strikeout",
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"+raw_html",
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"+definition_lists",
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"+backtick_code_blocks",
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"+fenced_code_attributes",
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"+shortcut_reference_links",
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"+lists_without_preceding_blankline",
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"+autolink_bare_uris",
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"-smart",
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]
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columns = "--columns=80"
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class PandocHTML2TXT(Pandoc):
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in_format = "html"
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in_options = []
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out_format = "plain"
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out_options = []
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columns = "--columns=80"
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