mirror of
https://github.com/3b1b/manim.git
synced 2025-04-13 09:47:07 +00:00
Clean up tex_file_writing
This commit is contained in:
Grant Sanderson
parent
129e512b0c
commit
ac01b144e8
3 changed files with 82 additions and 76 deletions
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@ -7,7 +7,7 @@ import re
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from manimlib.constants import BLACK, WHITE
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from manimlib.mobject.svg.svg_mobject import SVGMobject
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from manimlib.mobject.types.vectorized_mobject import VGroup
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from manimlib.utils.tex_file_writing import tex_to_svg
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from manimlib.utils.tex_file_writing import latex_to_svg
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from typing import TYPE_CHECKING
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@ -79,7 +79,7 @@ class SingleStringTex(SVGMobject):
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def get_svg_string_by_content(self, content: str) -> str:
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return get_cached_value(
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key=hash_string(str((content, self.template, self.additional_preamble))),
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value_func=lambda: tex_to_svg(content, self.template, self.additional_preamble),
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value_func=lambda: latex_to_svg(content, self.template, self.additional_preamble),
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message=f"Writing {self.tex_string}..."
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)
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@ -9,7 +9,7 @@ from manimlib.mobject.types.vectorized_mobject import VMobject
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from manimlib.utils.cache import get_cached_value
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from manimlib.utils.color import color_to_hex
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from manimlib.utils.color import hex_to_int
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from manimlib.utils.tex_file_writing import tex_to_svg
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from manimlib.utils.tex_file_writing import latex_to_svg
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from manimlib.utils.tex import num_tex_symbols
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from manimlib.utils.simple_functions import hash_string
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from manimlib.logger import log
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@ -88,7 +88,7 @@ class Tex(StringMobject):
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def get_svg_string_by_content(self, content: str) -> str:
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return get_cached_value(
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key=hash_string(str((content, self.template, self.additional_preamble))),
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value_func=lambda: tex_to_svg(content, self.template, self.additional_preamble),
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value_func=lambda: latex_to_svg(content, self.template, self.additional_preamble),
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message=f"Writing {self.tex_string}..."
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)
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@ -3,6 +3,7 @@ from __future__ import annotations
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import os
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import re
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import yaml
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import subprocess
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from pathlib import Path
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import tempfile
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@ -19,9 +20,8 @@ SAVED_TEX_CONFIG = {}
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def get_tex_template_config(template_name: str) -> dict[str, str]:
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name = template_name.replace(" ", "_").lower()
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with open(os.path.join(
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get_manim_dir(), "manimlib", "tex_templates.yml"
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), encoding="utf-8") as tex_templates_file:
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template_path = os.path.join(get_manim_dir(), "manimlib", "tex_templates.yml")
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with open(template_path, encoding="utf-8") as tex_templates_file:
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templates_dict = yaml.safe_load(tex_templates_file)
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if name not in templates_dict:
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log.warning(
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@ -53,23 +53,8 @@ def get_tex_config() -> dict[str, str]:
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return SAVED_TEX_CONFIG
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def tex_to_svg(
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content: str,
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template: str,
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additional_preamble: str,
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) -> str:
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tex_config = get_tex_config()
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if not template or template == tex_config["template"]:
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compiler = tex_config["compiler"]
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preamble = tex_config["preamble"]
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else:
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config = get_tex_template_config(template)
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compiler = config["compiler"]
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preamble = config["preamble"]
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if additional_preamble:
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preamble += "\n" + additional_preamble
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full_tex = "\n\n".join((
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def get_full_tex(content: str, preamble: str = ""):
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return "\n\n".join((
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"\\documentclass[preview]{standalone}",
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preamble,
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"\\begin{document}",
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@ -77,14 +62,32 @@ def tex_to_svg(
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"\\end{document}"
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)) + "\n"
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with tempfile.NamedTemporaryFile(suffix='.svg', mode='r+') as tmp:
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create_tex_svg(full_tex, tmp.name, compiler)
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# Read the contents
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tmp.seek(0)
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return tmp.read()
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def latex_to_svg(
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latex: str,
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template: str = "",
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additional_preamble: str = ""
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) -> str:
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"""Convert LaTeX string to SVG string.
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Args:
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latex: LaTeX source code
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template: Path to a template LaTeX file
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additional_preamble: String including any added "\\usepackage{...}" style imports
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Returns:
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str: SVG source code
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Raises:
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LatexError: If LaTeX compilation fails
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NotImplementedError: If compiler is not supported
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"""
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tex_config = get_tex_config()
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if template and template != tex_config["template"]:
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tex_config = get_tex_template_config(template)
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compiler = tex_config["compiler"]
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def create_tex_svg(full_tex: str, svg_file: str, compiler: str) -> None:
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if compiler == "latex":
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program = "latex"
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dvi_ext = ".dvi"
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@ -92,57 +95,60 @@ def create_tex_svg(full_tex: str, svg_file: str, compiler: str) -> None:
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program = "xelatex -no-pdf"
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dvi_ext = ".xdv"
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else:
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raise NotImplementedError(
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f"Compiler '{compiler}' is not implemented"
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)
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raise NotImplementedError(f"Compiler '{compiler}' is not implemented")
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preamble = tex_config["preamble"] + "\n" + additional_preamble
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full_tex = get_full_tex(latex, preamble)
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# Write intermediate files to a temporary directory
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with tempfile.TemporaryDirectory() as temp_dir:
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base_path = os.path.join(temp_dir, "working")
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tex_path = base_path + ".tex"
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dvi_path = base_path + dvi_ext
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# Write tex file
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root, _ = os.path.splitext(svg_file)
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with open(root + ".tex", "w", encoding="utf-8") as tex_file:
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with open(tex_path, "w", encoding="utf-8") as tex_file:
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tex_file.write(full_tex)
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# tex to dvi
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if os.system(" ".join((
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program,
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# Run latex compiler
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process = subprocess.run(
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[
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program.split()[0], # Split for xelatex case
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"-interaction=batchmode",
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"-halt-on-error",
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f"-output-directory=\"{os.path.dirname(svg_file)}\"",
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f"\"{root}.tex\"",
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">",
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os.devnull
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))):
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log.error(
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"LaTeX Error! Not a worry, it happens to the best of us."
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"-output-directory=" + temp_dir,
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tex_path
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] + (["--no-pdf"] if compiler == "xelatex" else []),
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capture_output=True,
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text=True
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)
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if process.returncode != 0:
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# Handle error
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error_str = ""
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with open(root + ".log", "r", encoding="utf-8") as log_file:
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error_match_obj = re.search(r"(?<=\n! ).*\n.*\n", log_file.read())
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if error_match_obj:
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error_str = error_match_obj.group()
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log.debug(
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f"The error could be:\n`{error_str}`",
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)
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raise LatexError(error_str)
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log_path = base_path + ".log"
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if os.path.exists(log_path):
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with open(log_path, "r", encoding="utf-8") as log_file:
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content = log_file.read()
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error_match = re.search(r"(?<=\n! ).*\n.*\n", content)
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if error_match:
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error_str = error_match.group()
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raise LatexError(error_str or "LaTeX compilation failed")
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# dvi to svg
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os.system(" ".join((
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# Run dvisvgm and capture output directly
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process = subprocess.run(
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[
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"dvisvgm",
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f"\"{root}{dvi_ext}\"",
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"-n",
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"-v",
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"0",
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"-o",
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f"\"{svg_file}\"",
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">",
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os.devnull
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)))
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dvi_path,
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"-n", # no fonts
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"-v", "0", # quiet
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"--stdout", # output to stdout instead of file
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],
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capture_output=True
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)
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# Cleanup superfluous documents
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for ext in (".tex", dvi_ext, ".log", ".aux"):
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try:
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os.remove(root + ext)
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except FileNotFoundError:
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pass
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# Return SVG string
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return process.stdout.decode('utf-8')
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class LatexError(Exception):
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