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(Unicode C++) Compress Text Feed to BinaryThis example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed binary data. Note: This example requires Chilkat v11.0.0 or greater.
#include <CkBinDataW.h> #include <CkCompressionW.h> #include <CkStringBuilderW.h> void ChilkatSample(void) { bool success = false; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkBinDataW bdCompressed; CkCompressionW compress; compress.put_Algorithm(L"deflate"); compress.put_Charset(L"utf-8"); CkStringBuilderW sbUncompressedChunk; compress.put_FirstChunk(true); compress.put_LastChunk(false); int i; for (i = 0; i <= 24; i++) { if (i == 24) { compress.put_LastChunk(true); } sbUncompressedChunk.Clear(); sbUncompressedChunk.AppendInt(i); sbUncompressedChunk.Append(L": This is a line of data to be compressed...\r\n"); compress.CompressSb(sbUncompressedChunk,bdCompressed); compress.put_FirstChunk(false); } // Show the compressed data in hex format: wprintf(L"The hex encoded compressed text:\n"); wprintf(L"%s\n",bdCompressed.getEncoded(L"hex")); // Now decompress in one call. It is important to set both FirstChunk and LastChunk = true CkBinDataW bdDecompressed; compress.put_FirstChunk(true); compress.put_LastChunk(true); success = compress.DecompressBd2(bdCompressed,bdDecompressed); if (success == false) { wprintf(L"%s\n",compress.lastErrorText()); return; } const wchar_t *originalText = bdDecompressed.getString(L"utf-8"); wprintf(L"%s\n",originalText); } |
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