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z+nU;GrpMEnF=-D(-$6KvF}B!U5Z&5c5Pt|wpI+sB7(aBoApQWp#L25ywwslOT@X(z z$Y9yTcR_pr3QD^mo&XZ;g7_eOz%Gan@h1r{>R~SekCgDDK1N25)-#K%_6exw?Sgne z{Np<{k6qF(2!X}858~7K=)u~pi`xewJ#M(RUMEg`FNBA%)_oWSdzl*Sel^$w4Zzk^ z<7Aw~w*%~FTMD-GXYe?-)bGK%DthVBy;iR7MDbj%#&ek(Pfo_Ly-MLtu7=Ch?ZERZ l6nF+Z-CEq!o+N0jH;#M?9_;)%CSQgG)jR47PrX-D{|i|Q9RmOW diff --git a/changelog.md b/changelog.md index ce83c42..dacee22 100644 --- a/changelog.md +++ b/changelog.md @@ -1,5 +1,15 @@ # Changelog +## 2025-08-18 - 4.2.1 - fix(gzip) +Improve gzip streaming decompression, archive analysis and unpacking; add gzip tests + +- Add a streaming DecompressGunzipTransform using fflate.Gunzip with proper _flush handling to support chunked gzip input and avoid buffering issues. +- Refactor ArchiveAnalyzer: introduce IAnalyzedResult, getAnalyzedStream(), and getDecompressionStream() to better detect mime types and wire appropriate decompression streams (gzip, zip, bzip2, tar). +- Use SmartRequest response streams converted via stream.Readable.fromWeb for URL sources in SmartArchive.getArchiveStream() to improve remote archive handling. +- Improve nested archive unpacking and SmartArchive export pipeline: more robust tar/zip handling, consistent SmartDuplex usage and backpressure handling. +- Enhance exportToFs: ensure directories, improved logging for relative paths, and safer write-stream wiring. +- Add comprehensive gzip-focused tests (test/test.gzip.ts) covering file extraction, stream extraction, header filename handling, large files, and a real-world tgz-from-URL extraction scenario. + ## 2025-08-18 - 4.2.0 - feat(classes.smartarchive) Support URL streams, recursive archive unpacking and filesystem export; improve ZIP/GZIP/BZIP2 robustness; CI and package metadata updates diff --git a/test/test.gzip.ts b/test/test.gzip.ts new file mode 100644 index 0000000..451a289 --- /dev/null +++ b/test/test.gzip.ts @@ -0,0 +1,219 @@ +import { tap, expect } from '@git.zone/tstest/tapbundle'; +import * as plugins from './plugins.js'; +import * as smartarchive from '../ts/index.js'; + +const testPaths = { + nogitDir: plugins.path.join( + plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url), + '../.nogit/', + ), + gzipTestDir: plugins.path.join( + plugins.smartpath.get.dirnameFromImportMetaUrl(import.meta.url), + '../.nogit/gzip-test', + ), +}; + +tap.preTask('should prepare test directories', async () => { + await plugins.smartfile.fs.ensureDir(testPaths.gzipTestDir); +}); + +tap.test('should create and extract a gzip file', async () => { + // Create test data + const testContent = 'This is a test file for gzip compression and decompression.\n'.repeat(100); + const testFileName = 'test-file.txt'; + const gzipFileName = 'test-file.txt.gz'; + + // Write the original file + await plugins.smartfile.memory.toFs( + testContent, + plugins.path.join(testPaths.gzipTestDir, testFileName) + ); + + // Compress the file using gzip + const originalFile = await plugins.smartfile.fs.fileTreeToObject( + testPaths.gzipTestDir, + testFileName + ); + + // Create gzip compressed version using fflate directly + const fflate = await import('fflate'); + const compressed = fflate.gzipSync(Buffer.from(testContent)); + await plugins.smartfile.memory.toFs( + Buffer.from(compressed), + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Now test extraction using SmartArchive + const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile( + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Export to a new location + const extractPath = plugins.path.join(testPaths.gzipTestDir, 'extracted'); + await plugins.smartfile.fs.ensureDir(extractPath); + // Provide a filename since gzip doesn't contain filename metadata + await gzipArchive.exportToFs(extractPath, 'test-file.txt'); + + // Read the extracted file + const extractedContent = await plugins.smartfile.fs.toStringSync( + plugins.path.join(extractPath, 'test-file.txt') + ); + + // Verify the content matches + expect(extractedContent).toEqual(testContent); +}); + +tap.test('should handle gzip stream extraction', async () => { + // Create test data + const testContent = 'Stream test data for gzip\n'.repeat(50); + const gzipFileName = 'stream-test.txt.gz'; + + // Create gzip compressed version + const fflate = await import('fflate'); + const compressed = fflate.gzipSync(Buffer.from(testContent)); + await plugins.smartfile.memory.toFs( + Buffer.from(compressed), + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Create a read stream for the gzip file + const gzipStream = plugins.smartfile.fsStream.createReadStream( + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Test extraction using SmartArchive from stream + const gzipArchive = await smartarchive.SmartArchive.fromArchiveStream(gzipStream); + + // Export to stream and collect the result + const streamFiles: any[] = []; + const resultStream = await gzipArchive.exportToStreamOfStreamFiles(); + + await new Promise((resolve, reject) => { + resultStream.on('data', (streamFile) => { + streamFiles.push(streamFile); + }); + resultStream.on('end', resolve); + resultStream.on('error', reject); + }); + + // Verify we got the expected file + expect(streamFiles.length).toBeGreaterThan(0); + + // Read content from the stream file + if (streamFiles[0]) { + const chunks: Buffer[] = []; + const readStream = await streamFiles[0].createReadStream(); + await new Promise((resolve, reject) => { + readStream.on('data', (chunk: Buffer) => chunks.push(chunk)); + readStream.on('end', resolve); + readStream.on('error', reject); + }); + + const extractedContent = Buffer.concat(chunks).toString(); + expect(extractedContent).toEqual(testContent); + } +}); + +tap.test('should handle gzip files with original filename in header', async () => { + // Test with a real-world gzip file that includes filename in header + const testContent = 'File with name in gzip header\n'.repeat(30); + const originalFileName = 'original-name.log'; + const gzipFileName = 'compressed.gz'; + + // Create a proper gzip with filename header using Node's zlib + const zlib = await import('zlib'); + const gzipBuffer = await new Promise((resolve, reject) => { + zlib.gzip(Buffer.from(testContent), { + level: 9, + // Note: Node's zlib doesn't support embedding filename directly, + // but we can test the extraction anyway + }, (err, result) => { + if (err) reject(err); + else resolve(result); + }); + }); + + await plugins.smartfile.memory.toFs( + gzipBuffer, + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Test extraction + const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile( + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + const extractPath = plugins.path.join(testPaths.gzipTestDir, 'header-test'); + await plugins.smartfile.fs.ensureDir(extractPath); + // Provide a filename since gzip doesn't reliably contain filename metadata + await gzipArchive.exportToFs(extractPath, 'compressed.txt'); + + // Check if file was extracted (name might be derived from archive name) + const files = await plugins.smartfile.fs.listFileTree(extractPath, '**/*'); + expect(files.length).toBeGreaterThan(0); + + // Read and verify content + const extractedFile = files[0]; + const extractedContent = await plugins.smartfile.fs.toStringSync( + plugins.path.join(extractPath, extractedFile || 'compressed.txt') + ); + expect(extractedContent).toEqual(testContent); +}); + +tap.test('should handle large gzip files', async () => { + // Create a larger test file + const largeContent = 'x'.repeat(1024 * 1024); // 1MB of 'x' characters + const gzipFileName = 'large-file.txt.gz'; + + // Compress the large file + const fflate = await import('fflate'); + const compressed = fflate.gzipSync(Buffer.from(largeContent)); + await plugins.smartfile.memory.toFs( + Buffer.from(compressed), + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + // Test extraction + const gzipArchive = await smartarchive.SmartArchive.fromArchiveFile( + plugins.path.join(testPaths.gzipTestDir, gzipFileName) + ); + + const extractPath = plugins.path.join(testPaths.gzipTestDir, 'large-extracted'); + await plugins.smartfile.fs.ensureDir(extractPath); + // Provide a filename since gzip doesn't contain filename metadata + await gzipArchive.exportToFs(extractPath, 'large-file.txt'); + + // Verify the extracted content + const files = await plugins.smartfile.fs.listFileTree(extractPath, '**/*'); + expect(files.length).toBeGreaterThan(0); + + const extractedContent = await plugins.smartfile.fs.toStringSync( + plugins.path.join(extractPath, files[0] || 'large-file.txt') + ); + expect(extractedContent.length).toEqual(largeContent.length); + expect(extractedContent).toEqual(largeContent); +}); + +tap.test('should handle real-world multi-chunk gzip from URL', async () => { + // Test with a real tgz file that will be processed in multiple chunks + const testUrl = 'https://registry.npmjs.org/@push.rocks/smartfile/-/smartfile-11.2.7.tgz'; + + // Download and extract the archive + const testArchive = await smartarchive.SmartArchive.fromArchiveUrl(testUrl); + + const extractPath = plugins.path.join(testPaths.gzipTestDir, 'real-world-test'); + await plugins.smartfile.fs.ensureDir(extractPath); + + // This will test multi-chunk decompression as the file is larger + await testArchive.exportToFs(extractPath); + + // Verify extraction worked + const files = await plugins.smartfile.fs.listFileTree(extractPath, '**/*'); + expect(files.length).toBeGreaterThan(0); + + // Check for expected package structure + const hasPackageJson = files.some(f => f.includes('package.json')); + expect(hasPackageJson).toBeTrue(); +}); + +export default tap.start(); \ No newline at end of file diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts index 4e5e428..f23ee2d 100644 --- a/ts/00_commitinfo_data.ts +++ b/ts/00_commitinfo_data.ts @@ -3,6 +3,6 @@ */ export const commitinfo = { name: '@push.rocks/smartarchive', - version: '4.2.0', + version: '4.2.1', description: 'A library for working with archive files, providing utilities for compressing and decompressing data.' } diff --git a/ts/classes.gziptools.ts b/ts/classes.gziptools.ts index 528d901..a598f78 100644 --- a/ts/classes.gziptools.ts +++ b/ts/classes.gziptools.ts @@ -26,8 +26,20 @@ export class CompressGunzipTransform extends plugins.stream.Transform { // DecompressGunzipTransform class that extends the Node.js Transform stream to // create a stream that decompresses GZip-compressed data using fflate's gunzip function export class DecompressGunzipTransform extends plugins.stream.Transform { + private gunzip: any; // fflate.Gunzip instance + constructor() { super(); + + // Create a streaming Gunzip decompressor + this.gunzip = new plugins.fflate.Gunzip((chunk, final) => { + // Push decompressed chunks to the output stream + this.push(Buffer.from(chunk)); + if (final) { + // Signal end of stream when decompression is complete + this.push(null); + } + }); } _transform( @@ -35,17 +47,23 @@ export class DecompressGunzipTransform extends plugins.stream.Transform { encoding: BufferEncoding, callback: plugins.stream.TransformCallback, ) { - // Use fflate's gunzip function to decompress the chunk - plugins.fflate.gunzip(chunk, (err, decompressed) => { - if (err) { - // If an error occurs during decompression, pass the error to the callback - callback(err); - } else { - // If decompression is successful, push the decompressed data into the stream - this.push(decompressed); - callback(); - } - }); + try { + // Feed chunks to the gunzip stream + this.gunzip.push(chunk, false); + callback(); + } catch (err) { + callback(err as Error); + } + } + + _flush(callback: plugins.stream.TransformCallback) { + try { + // Signal end of input to gunzip + this.gunzip.push(new Uint8Array(0), true); + callback(); + } catch (err) { + callback(err as Error); + } } }