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acsync-core

PyPI

Incremental binary patch system — SHA256 diff, 7z (LZMA2) patch creation and application

Versions collected1

Direct dependencies1From release 1.0.0

Last observed20 Oct, 18:28 UTC

README

Version 1.0.0 documentation

acsync-core

acsync-core is an incremental binary patch system for Python. It uses SHA256 for change detection and 7z (LZMA2) for compression — ideal for distributing application updates with minimal bandwidth.

Powered by ACSync.Core (.NET) via pythonnet.

Installation

pip install acsync-core

Windows only — the underlying .NET assembly and 7za.exe are bundled for Windows x64. Requires a .NET 10 SDK or later runtime on the target machine.

Quick Start

1. Create a manifest

import acsync

# Scan directory A (v1.0) and save its manifest
manifest_a = acsync.create_manifest(r"D:\app\v1.0")
acsync.save_manifest(manifest_a, r"D:\app\manifest_v1.json")

# Scan directory B (v2.0) and save its manifest
manifest_b = acsync.create_manifest(r"D:\app\v2.0")
acsync.save_manifest(manifest_b, r"D:\app\manifest_v2.json")

2. Diff two manifests

diff = acsync.diff(manifest_a, manifest_b)
print(f"Changed: {len(diff['changed'])} files")
print(f"Deleted: {len(diff['deleted'])} files")
for f in diff["changed"]:
    print(f"  + {f['relativePath']} ({f['sha256'][:12]}...)")

3. Create a patch

acsync.create_patch(
    r"D:\app\v1.0",
    r"D:\app\v2.0",
    r"D:\app\update_patch.7z",
)

4. Apply a patch

acsync.apply_patch(
    r"D:\deployed_app",
    r"D:\app\update_patch.7z",
    exclude_extensions=[".config"],  # preserve local config files
)

API

Function	Description
`create_manifest(directory)`	Scan a directory, returns manifest dict with SHA256 per file
`save_manifest(manifest, path)`	Save manifest dict to JSON file
`load_manifest(path)`	Load manifest from JSON file
`load_manifest_from_directory(dir)`	Load manifest from a directory (`acsync_manifest.json`)
`diff(old, new)`	Compare two manifests, returns `{changed: [...], deleted: [...]}`
`create_patch(old_dir, new_dir, output?)`	Create incremental 7z patch between two directories
`apply_patch(target, patch?, exclude?)`	Apply patch to target directory

License

Apache 2.0

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Versions 1

Collected releases

Version	Published	Direct dependencies	Open version
1.0.0	10 Jul 2026	1

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Repository

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g-poplo/acsync

Shared repository data · GitHub

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Current collected state Current

Observed since 20 Oct, 18:28 UTC

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Record identity

package:ad0e64dba1b811ec346f08d22ef842404768d74e74c503ba4a36b91345414eb3