69 lines
2.4 KiB
Bash
69 lines
2.4 KiB
Bash
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#!/usr/bin/env bash
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# tools/fetch-skia-artifact.sh — Variant A: GitHub release asset
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#
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# Fetches the Skia WASM static library selected by P0 §3.1 Artifact
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# Distribution Strategy (release asset hosting; rationale: <1 MB gzip,
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# free hosting, no extra git-lfs setup).
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#
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# The actual release asset is published in Phase E once the production
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# build pipeline lands; for Step 1b kickoff (Phase A onward) the dev
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# loop builds Skia from source via skia-bindings, so this script's
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# best-effort fetch is allowed to no-op when the release tag is absent.
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#
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# Exit semantics:
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# 0 vendor/skia-wasm/libskia-current.a is present and (when
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# EXPECTED_SHA256 is set) matches the pinned hash; OR the artifact
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# is absent and Phase A from-source build is the active path.
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# 1 artifact present but SHA mismatched, OR network/git-lfs failure
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# after a download was attempted.
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#
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# Phase E will populate EXPECTED_SHA256 + RELEASE_TAG + RELEASE_FILE
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# constants below; until then the script logs and returns 0 so dev
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# builds keep working without a published release.
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set -euo pipefail
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DEST_DIR="vendor/skia-wasm"
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DEST="${DEST_DIR}/libskia-current.a"
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# Phase E will overwrite the next three constants with the published
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# release asset metadata. Empty string = "no release yet, fall through
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# to from-source build".
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RELEASE_TAG=""
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RELEASE_FILE=""
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EXPECTED_SHA256=""
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mkdir -p "$DEST_DIR"
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if [ -f "$DEST" ]; then
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if [ -n "$EXPECTED_SHA256" ]; then
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actual="$(shasum -a 256 "$DEST" | awk '{print $1}')"
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if [ "$actual" = "$EXPECTED_SHA256" ]; then
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echo "skia artifact present and SHA matches: $DEST"
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exit 0
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fi
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echo "skia artifact SHA mismatch (have=$actual want=$EXPECTED_SHA256), re-fetching" >&2
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else
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echo "skia artifact present at $DEST (no SHA pin yet — Phase E will pin)"
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exit 0
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fi
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fi
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if [ -z "$RELEASE_TAG" ] || [ -z "$RELEASE_FILE" ]; then
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echo "no release tag pinned yet — Phase E will publish; dev builds use skia-bindings from-source path"
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exit 0
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fi
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RELEASE_URL="https://github.com/ZSeven-W/openpencil/releases/download/${RELEASE_TAG}/${RELEASE_FILE}"
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echo "fetching skia artifact: $RELEASE_URL"
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curl -fL "$RELEASE_URL" -o "$DEST"
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if [ -n "$EXPECTED_SHA256" ]; then
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actual="$(shasum -a 256 "$DEST" | awk '{print $1}')"
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if [ "$actual" != "$EXPECTED_SHA256" ]; then
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echo "skia artifact SHA still mismatched after fetch: have=$actual want=$EXPECTED_SHA256" >&2
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exit 1
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fi
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fi
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echo "skia artifact fetched: $DEST"
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