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(Node.js) Compress String Feed to Base64This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed data in base64. Note: This example requires Chilkat v11.0.0 or greater.
var os = require('os'); if (os.platform() == 'win32') { var chilkat = require('@chilkat/ck-node23-win64'); } else if (os.platform() == 'linux') { if (os.arch() == 'arm') { var chilkat = require('@chilkat/ck-node23-linux-arm'); } else if (os.arch() == 'arm64') { var chilkat = require('@chilkat/ck-node23-linux-arm64'); } else { var chilkat = require('@chilkat/ck-node23-linux-x64'); } } else if (os.platform() == 'darwin') { var chilkat = require('@chilkat/ck-node23-mac-universal'); } function chilkatExample() { var success = false; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. var sbCompressedBase64 = new chilkat.StringBuilder(); var compress = new chilkat.Compression(); compress.Algorithm = "deflate"; compress.Charset = "utf-8"; compress.EncodingMode = "base64"; compress.FirstChunk = true; compress.LastChunk = false; var bdCompressed = new chilkat.BinData(); var sbUncompressedChunk = new chilkat.StringBuilder(); var i; for (i = 0; i <= 24; i++) { if (i == 24) { compress.LastChunk = true; } sbUncompressedChunk.Clear(); sbUncompressedChunk.AppendInt(i); sbUncompressedChunk.Append(": This is a line of data to be compressed...\r\n"); compress.CompressSb(sbUncompressedChunk,bdCompressed); compress.FirstChunk = false; } console.log("The base64 encoded compressed text:"); console.log(bdCompressed.GetEncoded("base64")); // Decompress in one call: var originalText = compress.DecompressStringENC(bdCompressed.GetEncoded("base64")); console.log(originalText); } chilkatExample(); |
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