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v0.7.3 — Binary G-code (.bgcode) parsing

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@xiao-villamor xiao-villamor released this 25 Jun 09:15
· 127 commits to main since this release
v0.7.3
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0.7.3

Closes the one explicitly-deferred item from the 0.7 parser theme: PrusaSlicer binary G-code (.bgcode) was indexed but unparsed (it returned empty metadata, tracked as a 0.7.0 follow-up). It's now a first-class supported file type.

Added

  • .bgcode is a supported file type — upload, URL/zip import, and shared-volume scans now read PrusaSlicer binary G-code. A new stdlib-only reader walks the libbgcode container and extracts the slicer/printer/print metadata (slicer + version, printer model, nozzle/bed temps, layer height, infill, filament length/weight/cost, estimated time, material, …) and the largest embedded PNG/JPG thumbnail — just like a text .gcode. Only the metadata and thumbnail blocks are read (stored uncompressed or zlib-deflated), so this needs no new dependency; the heatshrink-compressed G-code body is skipped, keeping the read cheap on large files.

Changed

  • Binary G-code is metadata-only where it can't be more — a .bgcode file's toolpath is heatshrink-compressed, and Moonraker/Klipper and Bambu LAN print plain-text G-code only. So for .bgcode files the in-browser toolpath preview shows a notice instead of an empty plot, "Open in slicer" is hidden, and send-to-printer is excluded (and rejected by the API with binary_gcode_not_printable as a backstop). Metadata and thumbnail still display, and the file downloads normally.

Notes

  • No schema changes. No new configuration.
  • No new dependencies — bgcode metadata/thumbnail blocks are decoded with the stdlib (struct + zlib).

Internal

  • New app.services.bgcode reader (container walk, deflate, INI metadata, thumbnail blocks) with safety caps for truncated/hostile files. Covered by synthetic-container unit tests plus a guarded real-fixture test; the .bgcode-skipped assertions in the import and shared-volume suites were updated to expect ingestion.

Full changelog: https://github.com/xiao-villamor/PrintStash/blob/main/CHANGELOG.md

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