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feat: add xmlsvg export option (#761)

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* feat: add xmlsvg export option

* fix: avoid atob for xmlsvg export to prevent UTF-8 corruption

Pass the data URL directly (like PNG export) instead of decoding
with atob(). atob() + Blob([string]) double-encodes non-ASCII
characters (Chinese, Japanese, emoji), corrupting the output file.

---------

Co-authored-by: dayuan.jiang <jdy.toh@gmail.com>
This commit is contained in:
zongxi1115
2026-04-03 07:50:57 +08:00
committed by GitHub
parent 29538782fc
commit cb8127920c
6 changed files with 24 additions and 8 deletions
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13
contexts/diagram-context.tsx
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@@ -233,7 +233,8 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
saveResolverRef.current = { resolver: null, format: null }
// For non-xmlsvg formats, skip XML extraction as it will fail
// Only drawio (which uses xmlsvg internally) has the content attribute
if (format === "png" || format === "svg") {
// xmlsvg is saved directly as SVG file, no need for extraction
if (format === "png" || format === "svg" || format === "xmlsvg") {
return
}
}
@@ -296,7 +297,8 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
}
// Map format to draw.io export format
const drawioFormat = format === "drawio" ? "xmlsvg" : format
const drawioFormat =
format === "drawio" || format === "xmlsvg" ? "xmlsvg" : format
// Set up the resolver before triggering export
saveResolverRef.current = {
@@ -320,8 +322,13 @@ export function DiagramProvider({ children }: { children: React.ReactNode }) {
fileContent = exportData
mimeType = "image/png"
extension = ".png"
} else if (format === "xmlsvg") {
// Editable SVG: pass data URL directly (like PNG)
fileContent = exportData
mimeType = "image/svg+xml"
extension = ".drawio.svg"
} else {
// SVG format
// SVG format (view-only)
fileContent = exportData
mimeType = "image/svg+xml"
extension = ".svg"