mikael-lovqvists-claude-agent
33bd288f9e
- package.json (ESM, bin entry) - bin/delta-backup.js — entrypoint - lib/args.js — CLI arg parsing via Node parseArgs - lib/config.js — config file merging + required path guards - lib/spawn.js — safe process spawning (no shell strings) - lib/state.js — sequence number + phase state management - lib/backends/zstd.js — zstd delta backend - lib/backends/index.js — backend registry - lib/commands/run.js — full run skeleton (phases 1-3 wired, 4-6 stubbed) - lib/commands/status.js — status command
36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
/**
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* zstd delta backend.
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*
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* Modified files: zstd --patch-from=prev new -o out.zst
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* New files: zstd new -o out.zst (no base, just compress)
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* Deleted files: no delta file, manifest entry only
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*/
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import { run } from '../spawn.js';
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export const name = 'zstd';
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export const ext = '.zst';
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/**
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* Create a delta from prevFile to newFile, output to outFile.
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* If prevFile is null, newFile is new — compress without a base.
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*/
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export async function createDelta(prevFile, newFile, outFile, { dryRun } = {}) {
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if (prevFile) {
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await run('zstd', ['--patch-from', prevFile, newFile, '-o', outFile, '-f'], { dryRun });
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} else {
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await run('zstd', [newFile, '-o', outFile, '-f'], { dryRun });
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}
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}
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/**
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* Apply a delta on top of prevFile to produce outFile.
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* If prevFile is null, the delta is a plain compressed file.
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*/
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export async function applyDelta(prevFile, deltaFile, outFile, { dryRun } = {}) {
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if (prevFile) {
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await run('zstd', ['-d', '--patch-from', prevFile, deltaFile, '-o', outFile, '-f'], { dryRun });
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} else {
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await run('zstd', ['-d', deltaFile, '-o', outFile, '-f'], { dryRun });
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}
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}
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