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Make Mermaid.js limit configurable (#16519)

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* Make Mermaid.js limit configurable

Add `MERMAID_MAX_SOURCE_CHARACTERS` to `[markup]` settings
to make the maximum size of a mermaid render configurable.

Fix #16513

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fixup! Make Mermaid.js limit configurable

* Update custom/conf/app.example.ini

Co-authored-by: silverwind <me@silverwind.io>

* Update docs/content/doc/advanced/config-cheat-sheet.en-us.md

Co-authored-by: silverwind <me@silverwind.io>

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
zeripath 2021-07-24 05:21:51 +01:00 • committed by GitHub
parent 342f338bda
commit f135a818f5
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 22 additions and 5 deletions
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6
web_src/js/markup/mermaid.js
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@ -1,4 +1,4 @@
const MAX_SOURCE_CHARACTERS = 5000;
const {MermaidMaxSourceCharacters} = window.config;
function displayError(el, err) {
el.closest('pre').classList.remove('is-loading');
@ -26,8 +26,8 @@ export async function renderMermaid(els) {
});
for (const el of els) {
if (el.textContent.length > MAX_SOURCE_CHARACTERS) {
displayError(el, new Error(`Mermaid source of ${el.textContent.length} characters exceeds the maximum allowed length of ${MAX_SOURCE_CHARACTERS}.`));
if (MermaidMaxSourceCharacters >= 0 && el.textContent.length > MermaidMaxSourceCharacters) {
displayError(el, new Error(`Mermaid source of ${el.textContent.length} characters exceeds the maximum allowed length of ${MermaidMaxSourceCharacters}.`));
continue;
}