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update media DB when adding LaTeX images

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This commit is contained in:
Damien Elmes 2020-02-11 19:25:57 +10:00
parent c3f22364c9
commit 6240bd613d
1 changed files with 7 additions and 12 deletions
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19
pylib/anki/latex.py
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@ -6,7 +6,6 @@ from __future__ import annotations
import html import html
import os import os
import re import re
import shutil
from typing import Any, List, Optional, Tuple from typing import Any, List, Optional, Tuple
import anki import anki
@ -28,11 +27,6 @@ svgCommands = [
] ]
build = True # if off, use existing media but don't create new build = True # if off, use existing media but don't create new
regexps = {
"standard": re.compile(r"\[latex\](.+?)\[/latex\]", re.DOTALL | re.IGNORECASE),
"expression": re.compile(r"\[\$\](.+?)\[/\$\]", re.DOTALL | re.IGNORECASE),
"math": re.compile(r"\[\$\$\](.+?)\[/\$\$\]", re.DOTALL | re.IGNORECASE),
}
# add standard tex install location to osx # add standard tex install location to osx
if isMac: if isMac:
@ -47,7 +41,7 @@ def on_card_did_render(output: TemplateRenderOutput, ctx: TemplateRenderContext)
def render_latex(html: str, model: NoteType, col: anki.storage._Collection,) -> str: def render_latex(html: str, model: NoteType, col: anki.storage._Collection,) -> str:
"Convert TEXT with embedded latex tags to image links." "Convert embedded latex tags in text to image links."
html, err = render_latex_returning_errors(html, model, col) html, err = render_latex_returning_errors(html, model, col)
if err: if err:
html += "\n".join(err) html += "\n".join(err)
@ -59,7 +53,7 @@ def render_latex_returning_errors(
) -> Tuple[str, List[str]]: ) -> Tuple[str, List[str]]:
"""Returns (text, errors). """Returns (text, errors).
error_message will be non-empty is LaTeX failed to render.""" errors will be non-empty if LaTeX failed to render."""
svg = model.get("latexsvg", False) svg = model.get("latexsvg", False)
header = model["latexPre"] header = model["latexPre"]
footer = model["latexPost"] footer = model["latexPost"]
@ -130,17 +124,18 @@ package in the LaTeX header instead."""
texfile = open(texpath, "w", encoding="utf8") texfile = open(texpath, "w", encoding="utf8")
texfile.write(latex) texfile.write(latex)
texfile.close() texfile.close()
mdir = col.media.dir()
oldcwd = os.getcwd() oldcwd = os.getcwd()
png = namedtmp("tmp.%s" % ext) png_or_svg = namedtmp("tmp.%s" % ext)
try: try:
# generate png # generate png/svg
os.chdir(tmpdir()) os.chdir(tmpdir())
for latexCmd in latexCmds: for latexCmd in latexCmds:
if call(latexCmd, stdout=log, stderr=log): if call(latexCmd, stdout=log, stderr=log):
return _errMsg(latexCmd[0], texpath) return _errMsg(latexCmd[0], texpath)
# add to media # add to media
shutil.copyfile(png, os.path.join(mdir, extracted.filename)) data = open(png_or_svg, "rb").read()
col.media.write_data(extracted.filename, data)
os.unlink(png_or_svg)
return None return None
finally: finally:
os.chdir(oldcwd) os.chdir(oldcwd)