Max P.
65f26e495a
- Introduces a script to build self-extracting archives with validation - Includes payload compression, placeholder replacement, and output creation - Adds a header script to extract and execute the embedded entrypoint
79 lines
2.1 KiB
Bash
Executable File
79 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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usage() {
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echo "Usage: $0 --payload-dir DIR --entrypoint FILE [--output FILE]"
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echo " $0 -p DIR -e FILE [-o FILE]"
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exit 1
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}
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# 📥 Default values
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HEADER="sfx_header.sh"
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PAYLOAD_DIR=""
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ENTRYPOINT=""
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OUTPUT="sfx.run"
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# 📋 Process arguments
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--payload-dir|-p)
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PAYLOAD_DIR="$2"
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shift 2
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;;
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--entrypoint|-e)
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ENTRYPOINT="$2"
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shift 2
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;;
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--output|-o)
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OUTPUT="$2"
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shift 2
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;;
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*)
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echo "❌ Unknown option: $1" >&2
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usage
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;;
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esac
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done
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# ✅ Validation
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[[ -z "$PAYLOAD_DIR" || -z "$ENTRYPOINT" ]] && usage
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[[ ! -d "$PAYLOAD_DIR" ]] && { echo "❌ Payload directory not found: $PAYLOAD_DIR" >&2; exit 1; }
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[[ ! -f "$PAYLOAD_DIR/$ENTRYPOINT" ]] && { echo "❌ Entrypoint not found in payload: $ENTRYPOINT" >&2; exit 1; }
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# 🧊 Temporary directory
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BUILD_TMP="$(mktemp -d "${TMPDIR:-/tmp}/sfxbuild.XXXXXX")"
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PAYLOAD_ARCHIVE="$BUILD_TMP/payload.tar.zst"
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HEADER_TMP="$BUILD_TMP/sfx_header.final"
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cleanup() {
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rm -rf "$BUILD_TMP"
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}
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trap cleanup EXIT
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echo "📦 Creating payload (→ $PAYLOAD_ARCHIVE)..."
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tar -cf - -C "$PAYLOAD_DIR" . | tee >(wc -c > "$BUILD_TMP/raw_size") | zstd -19 -T0 -o "$PAYLOAD_ARCHIVE"
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RAW_SIZE=$(numfmt --to=iec < "$BUILD_TMP/raw_size")
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# 🧭 Find marker
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ARCHIVE_LINE=$(grep -n '^__ARCHIVE_BEGIN__$' "$HEADER" | cut -d: -f1)
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[[ ! "$ARCHIVE_LINE" =~ ^[0-9]+$ ]] && {
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echo "❌ Error: Marker __ARCHIVE_BEGIN__ not found!" >&2
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exit 1
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}
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echo "🧮 Archive starts from line $ARCHIVE_LINE"
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# 🛠️ Replace placeholders
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sed "s|__ARCHIVE_LINE__|$ARCHIVE_LINE|" "$HEADER" | \
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sed "s|__ENTRYPOINT__|$ENTRYPOINT|" | \
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sed '/^__ARCHIVE_BEGIN__$/d' > "$HEADER_TMP"
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# 🔗 Combine
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cat "$HEADER_TMP" "$PAYLOAD_ARCHIVE" > "$OUTPUT"
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chmod +x "$OUTPUT"
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# 📊 Output
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FINAL_SIZE=$(du -h "$OUTPUT" | cut -f1)
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echo "✅ Done: $OUTPUT"
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echo " 📁 Original size: $RAW_SIZE"
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echo " 📦 Output file: $FINAL_SIZE"
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