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Deprecated old versions of transform, html and tex generation.

image-namespaces
Jan Černohorský 9 months ago
parent
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commit
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3 changed files with 0 additions and 757 deletions
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  1. 311
      src/formatitko/html.py
  2. 270
      src/formatitko/tex.py
  3. 176
      src/formatitko/transform.py

311
src/formatitko/html.py
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@ -1,311 +0,0 @@
from panflute import *
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter
from pygments.util import ClassNotFound
import os
from typing import Union
from .whitespace import NBSP
from .elements import FQuoted
from .katex import KatexClient
from .util import inlinify
from .context import Group
from .images import ImageProcessor
import warnings
warnings.warn("The html function has been deprecated, is left only for reference and will be removed in future commits. HTML_generator should be used in its place.", DeprecationWarning)
def html(e: Union[Element, ListContainer], k: KatexClient, i: ImageProcessor, indent_level: int=0, indent_str: str="\t") -> str:
warnings.warn("The html function has been deprecated, is left only for reference and will be removed in future commits. HTML_generator should be used in its place.", DeprecationWarning)
# `only` attribute which makes transformed elements appear only in tex
# output or html output
if hasattr(e, "attributes") and "only" in e.attributes and e.attributes["only"] != "html":
return ""
if isinstance(e, ListContainer):
return ''.join([html(child, k, i, indent_level, indent_str) for child in e])
# Bits from which the final element output is built at the end of this
# function. Most elements override this by returning their own output.
tag = e.tag.lower()
attributes = ""
content_foot = ""
content_head = ""
if isinstance(e, Str):
return e.text.replace(" ", " ")
# Most elements fit the general template at the end of the function, just
# need their html tag specified.
tags = {
BulletList: "ul",
Doc: "main",
Emph: "em",
Caption: "figcaption",
Para: "p",
Header: "h"+str(e.level) if isinstance(e, Header) else "",
LineBlock: "p",
ListItem: "li",
SmallCaps: "span",
Strikeout: "strike",
Subscript: "sub",
Superscript: "sup",
Underline: "u",
TableBody: "tbody",
TableHead: "thead",
TableFoot: "tfoot",
TableRow: "tr",
TableCell: "td",
}
if type(e) in tags:
tag = tags[type(e)]
# These are also disabled in pandoc so they shouldn't appear in the AST at all.
not_implemented = {
Citation: True,
Cite: True,
Definition: True,
DefinitionItem: True,
DefinitionList: True
}
if type(e) in not_implemented:
return f'<!-- FIXME: {type(e)}s not implemented -->'
# Elements which can be represented by a simple string
simple_string = {
NBSP: "&nbsp;",
Space: " ",
Null: "",
LineBreak: f"\n{indent_level*indent_str}<br>\n{indent_level*indent_str}",
SoftBreak: f" ",
HorizontalRule: f"{indent_level*indent_str}<hr>\n"
}
if type(e) in simple_string:
return simple_string[type(e)]
if hasattr(e, "identifier") and e.identifier != "":
attributes += f' id="{e.identifier}"'
if hasattr(e, "classes") and len(e.classes) != 0:
attributes += f' class="{" ".join(e.classes)}"'
# Attributes are only passed down manually, because we use them internally.
# Maybe this should be a blocklist instead of an allowlist?
# Overriding elements with their own returns
if isinstance(e, CodeBlock):
if len(e.classes) > 0 and (e.attributes["highlight"] == True or e.attributes["highlight"] == 'True'):
# Syntax highlighting using pygments
for cl in e.classes:
try:
lexer = get_lexer_by_name(cl)
except ClassNotFound:
continue
break
else:
print(f"WARN: Syntax highligher does not have lexer for element with these classes: {e.classes}")
formatter = HtmlFormatter(style=e.attributes["style"])
result = highlight(e.text, lexer, formatter)
return f'{result}'
else:
return f'<pre>{e.text}</pre>'
if isinstance(e, Doc):
formatter = HtmlFormatter(style=e.get_metadata("highlight-style") if e.get_metadata("highlight-style") is not None else "default")
content_head = f'<style>{formatter.get_style_defs(".highlight")}</style>'
if isinstance(e, Image):
url = e.url
# Attributes → image processor args
additional_args = {}
if "file-width" in e.attributes:
additional_args["width"] = int(e.attributes["file-width"])
if "file-height" in e.attributes:
additional_args["height"] = int(e.attributes["file-height"])
if "file-quality" in e.attributes:
additional_args["quality"] = int(e.attributes["file-quality"])
if "file-dpi" in e.attributes:
additional_args["dpi"] = int(e.attributes["file-dpi"])
# The directory of the current file, will also look for images there.
source_dir = e.attributes["source_dir"]
_, ext = os.path.splitext(url)
ext = ext[1:]
# Conversions between various formats.
if ext in ["svg", "png", "jpeg", "gif"]:
# Even supported elements have to be 'converted' because the
# processing contains finding and moving them to the output
# directory.
url = i.process_image(url, ext, source_dir, **additional_args)
elif ext in ["pdf", "epdf"]:
if not "dpi" in additional_args:
additional_args["dpi"] = 300
url = i.process_image(url, "png", source_dir, **additional_args)
elif ext in ["jpg"]:
url = i.process_image(url, "jpeg", source_dir, **additional_args)
else:
url = i.process_image(url, "png", source_dir, **additional_args)
# Srcset generation - multiple alternative sizes of images browsers can
# choose from.
_, ext = os.path.splitext(url)
ext = ext[1:]
srcset = []
if ext in ["png", "jpeg"] and (not "no-srcset" in e.attributes or e.attributes["no-srcset"] == False or e.attributes["no-srcset"] == 'False'):
# This is inspired by @vojta001's blogPhoto shortcode he made for
# patek.cz:
# https://gitlab.com/patek-devs/patek.cz/-/blob/master/themes/patek/layouts/shortcodes/blogPhoto.html
width, height = i.get_image_size(url, [i.public_dir])
sizes = [(640, 360, 85), (1280, 720, 85), (1920, 1080, 90)] # (widht, height, quality)
for size in sizes:
if width <= size[0] and height <= size[1]:
srcset.append((f'{i.web_path}/{url}', f'{width}w'))
break
quality = size[2] if ext == "jpeg" else None
srcset.append((f'{i.web_path}/{i.process_image(url, ext, i.public_dir, width=size[0], height=size[1], quality=quality)}', f'{size[0]}w'))
url = i.web_path + "/" + url
attributes = f'{" style=width:"+e.attributes["width"] if "width" in e.attributes else ""} alt="{e.title or html(e.content, k, i, 0, "")}"'
if len(srcset) != 0:
return f'<a href="{url}"><img src="{srcset[-1][0]}" srcset="{", ".join([" ".join(src) for src in srcset])}"{attributes}></a>'
else:
return f'<img src="{url}"{attributes}>'
# See https://pandoc.org/MANUAL.html#line-blocks
if isinstance(e, LineItem):
return indent_level*indent_str + html(e.content, k, i) + "<br>\n"
# Footnotes are placed into parentheses. (And not footnotes (This is how KSP did it before me))
if isinstance(e, Note):
content_head = "("
content_foot = ")"
if inlinify(e) is not None:
return f' <note>({html(inlinify(e), k, i, 0, "")})</note>'
if isinstance(e, FQuoted):
if e.style == "cs":
if e.quote_type == "SingleQuote":
return f'‚{html(e.content, k, i, 0, "")}‘'
elif e.quote_type == "DoubleQuote":
return f'„{html(e.content, k, i, 0, "")}“'
elif e.style == "en":
if e.quote_type == "SingleQuote":
return f'‘{html(e.content, k, i, 0, "")}’'
elif e.quote_type == "DoubleQuote":
return f'“{html(e.content, k, i, 0, "")}”'
else:
if e.quote_type == "SingleQuote":
return f'\'{html(e.content, k, i, 0, "")}\''
elif e.quote_type == "DoubleQuote":
return f'"{html(e.content, k, i, 0, "")}"'
else:
return f'"{html(e.content, k, i, 0, "")}"'
if isinstance(e, Group):
k.begingroup()
ret = html(e.content, k, i, indent_level, indent_str)
k.endgroup()
return ret
if isinstance(e, Math):
formats = {
"DisplayMath": True,
"InlineMath": False
}
return indent_level*indent_str + k.render(e.text, {"displayMode": formats[e.format]})
if isinstance(e, RawInline):
if e.format == "html":
return e.text
else:
return ""
if isinstance(e, RawBlock):
if e.format == "html":
return f'{e.text}\n'
else:
return ""
# Non-overriding elements, they get generated using the template at the end
# of this function
if isinstance(e, Header):
tag = "h"+str(e.level)
if isinstance(e, Figure):
content_foot = html(e.caption, k, i, indent_level+1, indent_str)
if isinstance(e, Caption):
tag = "figcaption"
if isinstance(e, Link):
tag = "a"
attributes += f' href="{e.url}"'
if e.title:
attributes += f' title="{e.title}"'
if isinstance(e, OrderedList):
tag = "ol"
if e.start and e.start != 1:
attributes += f' start="{e.start}"'
html_styles = {
"Decimal": "1",
"LowerRoman": "i",
"UpperRoman:": "I",
"LowerAlpha": "a",
"UpperAlpha": "A"
}
if e.style and e.style != "DefaultStyle":
attributes += f' type="{html_styles[e.style]}"'
# FIXME: Delimeter styles
if isinstance(e, Table):
content_head = html(e.head, k, i, indent_level+1, indent_str)
content_foot = html(e.foot, k, i, indent_level+1, indent_str)
# FIXME: Fancy pandoc tables, using colspec
if isinstance(e, TableCell):
tag = "td"
if e.colspan != 1:
attributes += f' colspan="{e.colspan}"'
if e.rowspan != 1:
attributes += f' rowspan="{e.rowspan}"'
aligns = {
"AlignLeft": "left",
"AlignRight": "right",
"AlignCenter": "center"
}
if e.alignment and e.alignment != "AlignDefault":
attributes += f' style="text-align: {aligns[e.alignment]}"'
# The default which all non-overriding elements get generated by. This
# includes elements, which were not explicitly mentioned in this function,
# e. g. Strong
if isinstance(e, Inline):
return f'<{tag}{attributes}>{content_head}{html(e.content, k, i, 0, "") if hasattr(e, "_content") else ""}{e.text if hasattr(e, "text") else ""}{content_foot}</{tag}>'
out_str = ""
if not isinstance(e, Plain):
out_str += f"{indent_level*indent_str}<{tag}{attributes}>\n"
out_str += content_head
if hasattr(e, "_content"):
if len(e.content) > 0 and isinstance(e.content[0], Inline):
out_str += (indent_level+1)*indent_str
out_str += html(e.content, k, i, indent_level+1, indent_str)
if hasattr(e, "text"):
out_str += e.text
out_str += f"{content_foot}\n"
if not isinstance(e, Plain):
out_str += f"{indent_level*indent_str}</{tag}>\n"
return out_str

270
src/formatitko/tex.py
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from panflute import *
import os
from typing import Union
from .whitespace import NBSP
from .elements import FQuoted
from .util import inlinify
from .context import Group
from .images import ImageProcessor
# Heavily inspired by: git://git.ucw.cz/labsconf2022.git
def tex(e: Union[Element, ListContainer], i: ImageProcessor, indent_level: int=0, indent_str: str="\t") -> str:
# `only` attribute which makes transformed elements appear only in tex
# output or html output
if hasattr(e, "attributes") and "only" in e.attributes and e.attributes["only"] != "tex":
return ""
if isinstance(e, ListContainer):
return ''.join([tex(child, i, indent_level, indent_str) for child in e])
# Bits from which the final element output is built at the end of this
# function. Most elements override this by returning their own output.
content_foot = ""
content_head = ""
arguments = ""
open = "{"
close = "}"
tag = e.tag.lower()
tags = {
Header: "h"+chr(64 + e.level) if isinstance(e, Header) else "",
}
if type(e) in tags:
tag = tags[type(e)]
# These are also disabled in pandoc so they shouldn't appear in the AST at all.
not_implemented = {
Citation: True,
Cite: True,
Definition: True,
DefinitionItem: True,
DefinitionList: True
}
if type(e) in not_implemented:
return f'% FIXME: {type(e)}s not implemented \n'
# Elements which can be represented by a simple string
simple_string = {
NBSP: "~",
Space: " ",
Null: "",
LineBreak: f"\\\\",
SoftBreak: f" ",
HorizontalRule: "\\hr\n\n"
}
if type(e) in simple_string:
return simple_string[type(e)]
# Simplest basic elements
if isinstance(e, Str):
return e.text.replace(" ", "~")
if isinstance(e, Para):
return tex(e.content, i, 0, "")+"\n\n"
if isinstance(e, Span) or isinstance(e, Plain):
return tex(e.content, i, 0, "")
# Overriding elements with their own returns
if isinstance(e, Image):
url = e.url
# TODO: This should use OutputGenerator's get_image_processor_args
# Attributes → image processor args
additional_args = {}
if "file-width" in e.attributes:
additional_args["width"] = int(e.attributes["file-width"])
if "file-height" in e.attributes:
additional_args["height"] = int(e.attributes["file-height"])
if "file-quality" in e.attributes:
additional_args["quality"] = int(e.attributes["file-quality"])
if "file-dpi" in e.attributes:
additional_args["dpi"] = int(e.attributes["file-dpi"])
# The directory of the current file, will also look for images there.
source_dir = e.attributes["source_dir"]
_, ext = os.path.splitext(url)
ext = ext[1:]
# Conversions between various formats.
if ext in ["pdf", "png", "jpeg"]:
# Even supported elements have to be 'converted' because the
# processing contains finding and moving them to the cache
# directory.
url = i.process_image(url, ext, source_dir, **additional_args)
elif ext in ["svg"]:
url = i.process_image(url, "pdf", source_dir, **additional_args)
elif ext in ["epdf"]:
url = i.process_image(url, "pdf", source_dir, **additional_args)
elif ext in ["jpg"]:
url = i.process_image(url, "jpeg", source_dir, **additional_args)
else:
url = i.process_image(url, "pdf", source_dir, **additional_args)
url = i.find_image(url, [i.cache_dir])
width = ""
if "width" in e.attributes:
width = e.attributes["width"]
# 50% → 0.5\hsize
if e.attributes["width"][-1] == "%":
width = str(int(e.attributes["width"][:-1])/100) + "\\hsize"
width = "width " + width
return f'\\image{{{width}}}{{{url}}}'
if isinstance(e, FQuoted):
if e.style == "cs":
if e.quote_type == "SingleQuote":
return f'‚{tex(e.content, i, 0, "")}‘'
elif e.quote_type == "DoubleQuote":
return f'„{tex(e.content, i, 0, "")}“'
elif e.style == "en":
if e.quote_type == "SingleQuote":
return f'‘{tex(e.content, i, 0, "")}’'
elif e.quote_type == "DoubleQuote":
return f'“{tex(e.content, i, 0, "")}”'
else:
if e.quote_type == "SingleQuote":
return f'\'{tex(e.content, i, 0, "")}\''
elif e.quote_type == "DoubleQuote":
return f'"{tex(e.content, i, 0, "")}"'
else:
return f'"{tex(e.content, i, 0, "")}"'
if isinstance(e, Code):
return f'\\verb`{e.text.replace("`", "backtick")}`'
if isinstance(e, Figure):
return f'\\figure{{{tex(e.content, i, indent_level+1, indent_str)}}}{{{tex(e.caption, i, indent_level+1, indent_str)}}}\n\n'
# Figure caption
if isinstance(e, Caption):
if inlinify(e) is not None:
return f'\\figcaption{{{tex(e.content, i, 0, "")}}}'
if isinstance(e, Math):
if e.format == "DisplayMath":
return f'$${e.text}$$\n'
else:
return f'${e.text}$'
# Footnote
if isinstance(e, Note):
tag = "fn"
if inlinify(e) is not None:
return f'\\fn{{{tex(inlinify(e), i, 0, "")}}}'
if isinstance(e, Table):
aligns = {
"AlignLeft": "\\quad#\\quad\\hfil",
"AlignRight": "\\quad\\hfil#\\quad",
"AlignCenter": "\\quad\\hfil#\\hfil\\quad",
"AlignDefault": "\\quad#\\quad\\hfil"
}
text = "\strut"+"&".join([aligns[col[0]] for col in e.colspec])+"\cr\n"
text += tex(e.head.content, i, 0, "")
text += "\\noalign{\\hrule}\n"
text += tex(e.content[0].content, i, 0, "")
text += "\\noalign{\\hrule}\n"
text += tex(e.foot.content, i, 0, "")
return "\\vskip1em\n\\halign{"+text+"}\n\\vskip1em\n"
# FIXME: Implement rowspan
if isinstance(e, TableRow):
return "&".join([("\\multispan"+str(cell.colspan)+" " if cell.colspan > 1 else "")+tex(cell.content, i, 0, "") for cell in e.content])+"\cr\n"
if isinstance(e, RawInline):
if e.format == "tex":
return e.text
else:
return ""
if isinstance(e, RawBlock):
if e.format == "tex":
return f'{e.text}\n'
else:
return ""
# See https://pandoc.org/MANUAL.html#line-blocks
if isinstance(e, LineBlock):
return f'{tex(e.content, i, indent_level+1, indent_str)}\n'
if isinstance(e, LineItem):
return tex(e.content, i, 0, "") + ("\\\\\n" if e.next else "\n")
if type(e) is Div:
return f'{tex(e.content, i, indent_level+1, indent_str)}'
if isinstance(e, Doc):
return tex(e.content, i, indent_level, indent_str)+"\n\\bye" # Is having the \bye a bad idea here?
# Non-overriding elements, they get generated using the template at the end
# of this function
if isinstance(e, BulletList):
tag = "list"
open = ""
arguments = "{o}"
close = "\\endlist"
elif isinstance(e, OrderedList):
tag = "list"
open = ""
styles = {
"DefaultStyle": "n",
"Decimal": "n",
"LowerRoman": "i",
"UpperRoman:": "I",
"LowerAlpha": "a",
"UpperAlpha": "A"
}
style = styles[e.style]
delimiters = {
"DefaultDelim": f"{style}.",
"Period": f"{style}.",
"OneParen": f"{style})",
"TwoParens": f"({style})"
}
style = delimiters[e.delimiter]
arguments = f"{{{style}}}"
close = "\\endlist"
# FIXME: Starting number of list
elif isinstance(e, ListItem):
tag = ":"
elif isinstance(e, Link):
if len(e.content) == 1 and isinstance(e.content[0], Str) and e.content[0].text == e.url:
tag = "url"
else:
tag = "linkurl"
arguments = f'{{{e.url}}}'
elif isinstance(e, Group):
tag = "begingroup"
open = ""
if "lang" in e.metadata and e.metadata["lang"] is not None:
open = "\\language"+e.metadata["lang"]
close = "\\endgroup"
# The default which all non-overriding elements get generated by. This
# includes elements, which were not explicitly mentioned in this function,
# e. g. Strong, Emph...
if isinstance(e, Inline):
return f'\\{tag}{arguments}{open}{content_head}{tex(e.content, i, 0, "") if hasattr(e, "_content") else ""}{e.text if hasattr(e, "text") else ""}{content_foot}{close}'
out_str = ""
out_str = f"\\{tag}{arguments}{open}\n"
out_str += content_head
if hasattr(e, "_content"):
out_str += tex(e.content, i, indent_level+1, indent_str)
if hasattr(e, "text"):
out_str += e.text
out_str += f"{content_foot}\n{close}\n\n"
return out_str

176
src/formatitko/transform.py
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@ -1,176 +0,0 @@
from panflute import Element, Div, Span, Quoted, Image, CodeBlock, Str, MetaInlines, MetaString, MetaBool, RawBlock
import re
import os
# Import local files
from .whitespace import Whitespace, NBSP, bavlna
from .util import nullify, import_md
from .context import Context, BlockGroup
from .command import Command, BlockCommand, InlineCommand
from .command_util import handle_command_define, parse_command
from .elements import FQuoted
import warnings
warnings.warn("The transform function has been deprecated, is left only for reference and will be removed in future commits. TransformProcessor should be used in its place.", DeprecationWarning)
# This is where tha magic happens. This function transforms a single element,
# to transform the entire tree, panflute's walk should be used.
def transform(e: Element, c: Context) -> Element:
warnings.warn("The transform function has been deprecated, is left only for reference and will be removed in future commits. TransformProcessor should be used in its place.", DeprecationWarning)
# Determine if this space should be non-breakable. See whitespace.py.
if isinstance(e, Whitespace) and bavlna(e, c):
e = NBSP()
if hasattr(e, "attributes"):
# `if` attribute. Only show this element if flag is set.
if "if" in e.attributes:
if not c.is_flag_set(e.attributes["if"]):
return nullify(e)
# `ifn` attribute. Only show this element if flag is NOT set
if "ifn" in e.attributes:
if c.is_flag_set(e.attributes["ifn"]):
return nullify(e)
# There are multiple ways to call a command so we turn it into a
# unified element first and then call it at the end. This handles the
# []{c=commandname} and
# :::{c=commandname}
# :::
# syntax.
if (isinstance(e, Div) or isinstance(e, Span)) and "c" in e.attributes:
if isinstance(e, Div):
e = BlockCommand(*e.content, identifier=e.identifier, classes=e.classes, attributes=e.attributes)
else:
e = InlineCommand(*e.content, identifier=e.identifier, classes=e.classes, attributes=e.attributes)
# Isolated subdocuments using Group and a different Context. Can be
# separate files (using attribute `partial`) or be inline using the
# following syntax:
# ```markdown {.group}
# * file content *
# ```
# Both can contain their own metadata in a FrontMatter (YAML header)
if (isinstance(e, Div) and "partial" in e.attributes)\
or (isinstance(e, CodeBlock) and "markdown" in e.classes and "group" in e.classes):
if isinstance(e, Div):
if not c.trusted: # If we're in an untrusted context, we shouldn't allow inclusion of files outside the PWD.
full_path = os.path.abspath(c.dir + "/" + e.attributes["partial"])
pwd = os.path.abspath(".")
if os.path.commonpath([full_path, pwd]) != os.path.commonpath([pwd]):
return nullify(e)
text = open(c.dir + "/" + e.attributes["partial"], "r").read()
path = c.dir + "/" + e.attributes["partial"]
else:
text = e.text
path = c.path
if "type" in e.attributes and e.attributes["type"] in ["tex", "html"]:
e = RawBlock(text, e.attributes["type"])
else:
includedDoc = import_md(text)
trusted = True
if "untrusted" in e.attributes and (e.attributes["untrusted"] == True or e.attributes["untrusted"] == 'True'):
trusted = False
if not c.trusted:
trusted = False
nContext = Context(includedDoc, path, c, trusted=trusted)
language = includedDoc.get_metadata("lang")
includedDoc = includedDoc.walk(transform, nContext)
e = BlockGroup(*includedDoc.content, context=nContext, metadata={"lang": language})
# Transform panflute's Quoted to custom FQuoted, see above.
if isinstance(e, Quoted):
quote_styles = {
"cs": "cs",
"en": "en",
"sk": "cs",
None: None
}
e = FQuoted(*e.content, quote_type=e.quote_type, style=quote_styles[c.get_metadata("lang")])
if isinstance(e, Image):
# Pass down the directory of the current source file for finding image
# files.
e.attributes["source_dir"] = c.dir
# Pass down "no-srcset" metadatum as attribute down to images.
if not "no-srcset" in e.attributes:
e.attributes["no-srcset"] = c.get_metadata("no-srcset") if c.get_metadata("no-srcset") is not None else False
# Pass down metadata 'highlight' and 'highlight_style' as attribute to CodeBlocks
if isinstance(e, CodeBlock):
if not "highlight" in e.attributes:
e.attributes["highlight"] = c.get_metadata("highlight") if c.get_metadata("highlight") is not None else True
if not "style" in e.attributes:
e.attributes["style"] = c.get_metadata("highlight-style") if c.get_metadata("highlight-style") is not None else "default"
e.attributes["noclasses"] = False
# I think this is supposed to enable inline styles for highlighting when the style differs from the document, but it clearly doesn't work. a) HTML_generator never accesses it and b) Only the top-level document contains a style so you have to ask the top level context, not the current context.
else:
e.attributes["noclasses"] = True
# Execute python code inside source code block. Works the same as commands.
# Syntax:
# ```python {.run}
# print("woo")
# ```
if isinstance(e, CodeBlock) and hasattr(e, "classes") and "python" in e.classes and "run" in e.classes:
if not c.trusted:
return nullify(e)
command_output = parse_command(e.text)(BlockCommand(), c)
e = BlockCommand().replaceSelf(*([] if command_output is None else command_output))
e = e.walk(transform, c)
# Command defines for calling using BlockCommand and InlineCommand. If
# redefine is used instead of define, the program doesn't check if the
# command already exists.
# Syntax:
# ```python {define=commandname}
# print(wooo)
# ```
if isinstance(e, CodeBlock) and hasattr(e, "classes") and "python" in e.classes and hasattr(e, "attributes")\
and ("define" in e.attributes or "redefine" in e.attributes):
if not c.trusted:
return nullify(e)
e = handle_command_define(e, c)
## Shorthands
# Shorter (and sometimes the only) forms of certain features
if isinstance(e, Span) and len(e.content) == 1 and isinstance(e.content[0], Str):
## Handle special command shorthand [!commandname]{}
if re.match(r"^![\w.]+$", e.content[0].text):
e = InlineCommand(identifier=e.identifier, classes=e.classes, attributes={**e.attributes, "c": e.content[0].text[1:]})
## Handle import [#path/file.md]{}
# This is the exact opposite of partials. We take the commands, flags
# and metadata but drop the content.
elif re.match(r"^#.+$", e.content[0].text):
importedDoc = import_md(open(c.dir + "/" + e.content[0].text[1:], "r").read())
importedDoc.walk(transform, c)
return nullify(e)
## Handle metadata print [$key1.key2]{}
# This is a shorthand for just printing the content of some metadata.
elif re.match(r"^\$[\w.]+$", e.content[0].text):
val = c.get_metadata(e.content[0].text[1:], False)
if isinstance(val, MetaInlines):
e = Span(*val.content)
e = e.walk(transform, c)
elif isinstance(val, MetaString):
e = Span(Str(val.string))
elif isinstance(val, MetaBool):
e = Span(Str(str(val.boolean)))
else:
raise TypeError(f"Cannot print value of metadatum '{e.content[0].text[1:]}' of type '{type(val)}'")
## Execute commands
# panflute's walk function transforms the children first, then the root
# element, so the content the command receives is already transformed.
# The output from the command is then transformed manually again.
if isinstance(e, Command):
if not c.get_command(e.attributes["c"]):
raise NameError(f"Command not defined '{e.attributes['c']}'.")
command_output = c.get_command(e.attributes["c"])(e, c)
e = e.replaceSelf(*command_output)
e = e.walk(transform, c)
return e
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