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clipboard</div></span></h1><div class="metadata">Published <span><a class="-x-ago" href="" title="Apr 18, 2025" role="button" data-timestamp="1744947861839">4 days ago</a></span> • <a class="-pub-publisher" href="/publishers/loki3d.com"><img class="-pub-publisher-shield filter-invert-on-dark" src="/static/hash-j60jq2j3/img/material-icon-verified.svg" alt="verified publisher" width="14" height="14" title="Published by a pub.dev verified publisher"/>loki3d.com</a><span class="package-badge" title="Package is compatible with Dart 3.">Dart 3 compatible</span></div><div class="detail-tags-and-like"><div class="detail-tags"><div class="-pub-tag-badge"><span class="tag-badge-main">SDK</span><a class="tag-badge-sub" href="/packages?q=sdk%3Adart" rel="nofollow" title="Packages compatible with Dart SDK">Dart</a><a class="tag-badge-sub" href="/packages?q=sdk%3Aflutter" rel="nofollow" title="Packages compatible with Flutter SDK">Flutter</a></div><div class="-pub-tag-badge"><span class="tag-badge-main">Platform</span><a class="tag-badge-sub" href="/packages?q=platform%3Aandroid" rel="nofollow" title="Packages compatible with Android platform">Android</a><a class="tag-badge-sub" href="/packages?q=platform%3Aios" rel="nofollow" title="Packages compatible with iOS platform">iOS</a><a class="tag-badge-sub" href="/packages?q=platform%3Alinux" rel="nofollow" title="Packages compatible with Linux platform">Linux</a><a class="tag-badge-sub" href="/packages?q=platform%3Amacos" rel="nofollow" title="Packages compatible with macOS platform">macOS</a><a class="tag-badge-sub" href="/packages?q=platform%3Aweb" rel="nofollow" title="Packages compatible with Web platform">web</a><a class="tag-badge-sub" href="/packages?q=platform%3Awindows" rel="nofollow" title="Packages compatible with Windows platform">Windows</a></div></div><div class="detail-like"><button id="-pub-like-icon-button" class="mdc-icon-button" data-ga-click-event="toggle-like" aria-pressed="false" title="Like this package"><img class="mdc-icon-button__icon" src="/static/hash-j60jq2j3/img/like-inactive.svg" alt="liked status: inactive" width="18" height="18"/><img class="mdc-icon-button__icon mdc-icon-button__icon--on" src="/static/hash-j60jq2j3/img/like-active.svg" alt="liked status: active" width="18" height="18"/></button><span class="likes-count"><span id="likes-count">817</span></span></div></div></div></div></div></div><div class="detail-container"><div class="detail-lead"><div class="detail-metadata-toggle"><div class="detail-metadata-toggle-icon">→</div><h3 class="detail-lead-title">Metadata</h3></div><p class="detail-lead-text">Provides encoders and decoders for various archive and compression formats such as zip, tar, bzip2, gzip, and zlib.</p><p class="detail-lead-more"><a class="detail-metadata-toggle">More...</a></p></div></div><div class="detail-body"><div class="detail-tabs"><div class="detail-tabs-wide-header"><div class="detail-container"><ul class="detail-tabs-header"><li class="detail-tab tab-button detail-tab-readme-title -active">Readme</li><li class="detail-tab tab-link detail-tab-changelog-title"><a href="/packages/archive/changelog" role="button">Changelog</a></li><li class="detail-tab tab-link detail-tab-installing-title"><a href="/packages/archive/install" role="button">Installing</a></li><li class="detail-tab tab-link detail-tab-versions-title"><a href="/packages/archive/versions" role="button">Versions</a></li><li class="detail-tab tab-link detail-tab-analysis-title"><a href="/packages/archive/score" role="button">Scores</a></li></ul></div></div><div class="detail-container detail-body-main"><div class="detail-tabs-content"><section class="tab-content detail-tab-readme-content -active markdown-body"><h1 id="archive" class="hash-header">archive <a href="#archive" class="hash-link">#</a></h1> <p><a href="https://github.com/brendan-duncan/archive/actions/workflows/build.yaml" rel="ugc"><img src="https://github.com/brendan-duncan/archive/actions/workflows/build.yaml/badge.svg" alt="Dart CI"></a> <a href="https://pub.dev/packages/archive"><img src="https://img.shields.io/pub/v/archive.svg" alt="pub package"></a></p> <h2 id="40-update" class="hash-header">4.0 Update <a href="#40-update" class="hash-link">#</a></h2> <p>The Archive library was originally written when the web was the primary use of Dart. File IO was less of a concern and the design was around having everything in memory. As other uses of Dart came about, such as Flutter, a lot of File IO operations were added to the library, but not in a very clean way.</p> <p>The design goal for the 4.0 revision of the library is to ensure File IO is a primary focus, while minimizing memory usage. Memory-only interfaces are still available for web platforms.</p> <h4 id="migrating-3x-to-4xdocmigrating_3_to_4md"><a href="https://github.com/brendan-duncan/archive/blob/main/doc/migrating_3_to_4.md" rel="ugc">Migrating 3.x to 4.x</a>.</h4> <h3 id="migration-quick-tips" class="hash-header">Migration quick tips: <a href="#migration-quick-tips" class="hash-link">#</a></h3> <ul> <li><strong>decodeBuffer</strong> has been renamed to <strong>decodeStream</strong> in the various decoder classes.</li> <li><strong>InputStream</strong> has been renamed to <strong>InputMemoryStream</strong>.</li> <li><strong>OutputStream</strong> has been renamed to <strong>OutputMemoryStream</strong>.</li> </ul> <hr> <h2 id="overview" class="hash-header">Overview <a href="#overview" class="hash-link">#</a></h2> <p>A Dart library to encode and decode various archive and compression formats.</p> <p>The archive library currently supports the following codecs:</p> <ul> <li>Zip</li> <li>Tar</li> <li>ZLib</li> <li>GZip</li> <li>BZip2</li> <li>XZ</li> </ul> <hr> <h2 id="usage" class="hash-header">Usage <a href="#usage" class="hash-link">#</a></h2> <p><strong>package:archive/archive.dart</strong></p> <ul> <li>Can be used for both web and native applications.</li> </ul> <p><strong>package:archive/archive_io.dart</strong></p> <ul> <li>Provides some extra utilities for 'dart:io' based applications.</li> </ul> <h4 id="decoding-a-zip-file-in-memory">Decoding a zip file in memory</h4> <pre><code class="language-dart">import 'package:archive/archive.dart'; import 'dart:io'; void main() { final bytes = File('test.zip').readAsBytesSync(); final archive = ZipDecoder().decodeBytes(bytes); for (final entry in archive) { if (entry.isFile) { final fileBytes = file.readBytes(); File('out/${file.fullPathName}') ..createSync(recursive: true) ..writeAsBytesSync(fileBytes); } } } </code></pre> <h4 id="using-inputfilestream-and-outputfilestream-to-extract-a-zip">Using InputFileStream and OutputFileStream to extract a zip:</h4> <pre><code class="language-dart">import 'dart:io'; import 'package:archive/archive.dart'; void main() { // Use an InputFileStream to access the zip file without storing it in memory. // Note that using InputFileStream will result in an error from the web platform // as there is no file system there. final inputStream = InputFileStream('test.zip'); // Decode the zip from the InputFileStream. The archive will have the contents of the // zip, without having stored the data in memory. final archive = ZipDecoder().decodeStream(inputStream); final symbolicLinks = []; // keep a list of the symbolic link entities, if any. // For all of the entries in the archive for (final file in archive) { // You should create symbolic links **after** the rest of the archive has been // extracted, otherwise the file being linked might not exist yet. if (file.isSymbolicLink) { symbolicLinks.add(file); continue; } if (file.isFile) { // Write the file content to a directory called 'out'. // In practice, you should make sure file.name doesn't include '..' paths // that would put it outside of the extraction directory. // An OutputFileStream will write the data to disk. final outputStream = OutputFileStream('out/${file.name}'); // The writeContent method will decompress the file content directly to disk without // storing the decompressed data in memory. entity.writeContent(outputStream); // Make sure to close the output stream so the File is closed. outputStream.closeSync(); } else { // If the entity is a directory, create it. Normally writing a file will create // the directories necessary, but sometimes an archive will have an empty directory // with no files. Directory('out/${file.name}').createSync(recursive: true); } } // Create symbolic links **after** the rest of the archive has been extracted to make sure // the file being linked exists. for (final entity in symbolicLinks) { // Before using this in production code, you should ensure the symbolicLink path // points to a file within the archive, otherwise it could be a security issue. final link = Link('out/${entity.fullPathName}'); link.createSync(entity.symbolicLink!, recursive: true); } } </code></pre> <h4 id="extractfiletodisk">extractFileToDisk</h4> <p><code>extractFileToDisk</code> is a convenience function to extract the contents of an archive file directory to an output directory. The type of archive it is will be determined by the file extension.</p> <pre><code class="language-dart">import 'package:archive/archive_io.dart'; // ... extractFileToDisk('test.zip', 'out'); </code></pre> <h4 id="extractarchivetodisk">extractArchiveToDisk</h4> <p><code>extractArchiveToDisk</code> is a convenience function to write the contents of an Archive to an output directory.</p> <pre><code class="language-dart">import 'package:archive/archive_io.dart'; // ... // Use an InputFileStream to access the zip file without storing it in memory. final inputStream = InputFileStream('test.zip'); // Decode the zip from the InputFileStream. The archive will have the contents of the // zip, without having stored the data in memory. final archive = ZipDecoder().decodeStream(inputStream); extractArchiveToDisk(archive, 'out'); </code></pre> </section></div></div></div><aside class="detail-info-box"><a class="packages-scores" href="/packages/archive/score"><div class="packages-score packages-score-like"><div class="packages-score-value -has-value"><span class="packages-score-value-number">817</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">likes</div></div><div class="packages-score packages-score-health"><div class="packages-score-value -has-value"><span class="packages-score-value-number">150</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">points</div></div><div class="packages-score packages-score-downloads" title="Number of downloads of this package during the past 30 days"><div class="packages-score-value -has-value"><span class="packages-score-value-number">6.52M</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">downloads</div></div></a><h3 class="title">Publisher</h3><p><a href="/publishers/loki3d.com"><img class="-pub-publisher-shield filter-invert-on-dark" src="/static/hash-j60jq2j3/img/material-icon-verified.svg" alt="verified publisher" width="14" height="14" title="Published by a pub.dev verified publisher"/>loki3d.com</a></p><h3 class="title">Weekly Downloads</h3><div id="-weekly-downloads-sparkline" class="weekly-downloads-sparkline" data-widget="weekly-sparkline" data-weekly-sparkline-points="gIoFaIP7FQDMCxcAvhsaADnHGACqWBcA0ywXAH4gFwBvmBsAKqQWAH4yFgA6bhUALoEXADCqFAAnvxMA9noSAJ8FCwBSxAoAt4wSALEIFgCOfxMARIgRAC8XFACnqxMAsgYUAEXiFAAXzBcAwl0WAEQ6FAD2wxQAHrYWACqhEwDyrxUAKQ0XAGbNFQBb4xgAKg4WAM8bFwBkahcA6YsXAMsYFwBZsBYAbYUWAMv2GQDOuBcAO7QXAAvMFwARuxcA5LcYAPvcGAC+OhcAlR4WAHcJGQA="></div><h3 class="title pkg-infobox-metadata">Metadata</h3><p>Provides encoders and decoders for various archive and compression formats such as zip, tar, bzip2, gzip, and zlib.</p><p><a class="link" href="https://github.com/brendan-duncan/archive" rel="ugc">Repository (GitHub)</a><br/></p><h3 class="title">Topics</h3><p><a class="topics-tag" href="/packages?q=topic%3Aarchive" rel="nofollow">#archive</a> <a class="topics-tag" href="/packages?q=topic%3Azip" rel="nofollow">#zip</a> <a class="topics-tag" href="/packages?q=topic%3Atar" rel="nofollow">#tar</a> <a class="topics-tag" href="/packages?q=topic%3Agzip" rel="nofollow">#gzip</a> <a class="topics-tag" href="/packages?q=topic%3Axz" rel="nofollow">#xz</a></p><h3 class="title">Documentation</h3><p><a class="link" href="/documentation/archive/latest/">API reference</a><br/></p><h3 class="title">License</h3><p><img class="inline-icon-img filter-invert-on-dark" src="/static/hash-j60jq2j3/img/material-icon-balance.svg" alt="" width="14" height="14" role="presentation"/>MIT (<a href="/packages/archive/license">license</a>)</p><h3 class="title">Dependencies</h3><p><a href="/packages/crypto" title="^3.0.3">crypto</a>, <a href="/packages/path" title="^1.8.0">path</a>, <a href="/packages/posix" title="^6.0.1">posix</a></p><h3 class="title">More</h3><p><a href="/packages?q=dependency%3Aarchive" rel="nofollow">Packages that depend on archive</a></p></aside></div><script type="application/ld+json">{"@context":"http\u003a\u002f\u002fschema.org","@type":"SoftwareSourceCode","name":"archive","version":"4.0.6","description":"archive - Provides encoders and decoders for various archive and compression formats such as zip, tar, bzip2, gzip, and zlib.","url":"https\u003a\u002f\u002fpub.dev\u002fpackages\u002farchive","dateCreated":"2013-12-31T00\u003a47\u003a39.876Z","dateModified":"2025-04-18T03\u003a44\u003a21.839208Z","programmingLanguage":"Dart","image":"https\u003a\u002f\u002fpub.dev\u002fstatic\u002fimg\u002fpub-dev-icon-cover-image.png","license":"https\u003a\u002f\u002fpub.dev\u002fpackages\u002farchive\u002flicense"}</script></div><div class="detail-metadata"><h3 class="detail-metadata-title"><span class="detail-metadata-toggle">←</span> Metadata</h3><div class="detail-info-box"><a class="packages-scores" href="/packages/archive/score"><div class="packages-score packages-score-like"><div class="packages-score-value -has-value"><span class="packages-score-value-number">817</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">likes</div></div><div class="packages-score packages-score-health"><div class="packages-score-value -has-value"><span class="packages-score-value-number">150</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">points</div></div><div class="packages-score packages-score-downloads" title="Number of downloads of this package during the past 30 days"><div class="packages-score-value -has-value"><span class="packages-score-value-number">6.52M</span><span class="packages-score-value-sign"></span></div><div class="packages-score-label">downloads</div></div></a><h3 class="title">Publisher</h3><p><a href="/publishers/loki3d.com"><img class="-pub-publisher-shield filter-invert-on-dark" src="/static/hash-j60jq2j3/img/material-icon-verified.svg" alt="verified publisher" width="14" height="14" title="Published by a pub.dev verified publisher"/>loki3d.com</a></p><h3 class="title">Weekly Downloads</h3><div id="-weekly-downloads-sparkline" class="weekly-downloads-sparkline" data-widget="weekly-sparkline" data-weekly-sparkline-points="gIoFaIP7FQDMCxcAvhsaADnHGACqWBcA0ywXAH4gFwBvmBsAKqQWAH4yFgA6bhUALoEXADCqFAAnvxMA9noSAJ8FCwBSxAoAt4wSALEIFgCOfxMARIgRAC8XFACnqxMAsgYUAEXiFAAXzBcAwl0WAEQ6FAD2wxQAHrYWACqhEwDyrxUAKQ0XAGbNFQBb4xgAKg4WAM8bFwBkahcA6YsXAMsYFwBZsBYAbYUWAMv2GQDOuBcAO7QXAAvMFwARuxcA5LcYAPvcGAC+OhcAlR4WAHcJGQA="></div><h3 class="title pkg-infobox-metadata">Metadata</h3><p>Provides encoders and decoders for various archive and compression formats such as zip, tar, bzip2, gzip, and zlib.</p><p><a class="link" href="https://github.com/brendan-duncan/archive" rel="ugc">Repository (GitHub)</a><br/></p><h3 class="title">Topics</h3><p><a class="topics-tag" href="/packages?q=topic%3Aarchive" rel="nofollow">#archive</a> <a class="topics-tag" href="/packages?q=topic%3Azip" rel="nofollow">#zip</a> <a class="topics-tag" href="/packages?q=topic%3Atar" rel="nofollow">#tar</a> <a class="topics-tag" href="/packages?q=topic%3Agzip" rel="nofollow">#gzip</a> <a class="topics-tag" href="/packages?q=topic%3Axz" rel="nofollow">#xz</a></p><h3 class="title">Documentation</h3><p><a class="link" href="/documentation/archive/latest/">API reference</a><br/></p><h3 class="title">License</h3><p><img class="inline-icon-img filter-invert-on-dark" src="/static/hash-j60jq2j3/img/material-icon-balance.svg" alt="" width="14" height="14" role="presentation"/>MIT (<a href="/packages/archive/license">license</a>)</p><h3 class="title">Dependencies</h3><p><a href="/packages/crypto" title="^3.0.3">crypto</a>, <a href="/packages/path" title="^1.8.0">path</a>, <a href="/packages/posix" title="^6.0.1">posix</a></p><h3 class="title">More</h3><p><a href="/packages?q=dependency%3Aarchive" rel="nofollow">Packages that depend on archive</a></p></div><p class="detail-lead-back"><a class="detail-metadata-toggle">Back</a></p></div><div id="-screenshot-carousel" class="carousel"><fab id="-carousel-prev" class="mdc-fab carousel-prev carousel-nav" data-mdc-auto-init="MDCRipple" title="Previous" 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