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(Unicode C) 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.
#include <C_CkStringBuilderW.h> #include <C_CkCompressionW.h> #include <C_CkBinDataW.h> void ChilkatSample(void) { BOOL success; HCkStringBuilderW sbCompressedBase64; HCkCompressionW compress; HCkBinDataW bdCompressed; HCkStringBuilderW sbUncompressedChunk; int i; const wchar_t *originalText; success = FALSE; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. sbCompressedBase64 = CkStringBuilderW_Create(); compress = CkCompressionW_Create(); CkCompressionW_putAlgorithm(compress,L"deflate"); CkCompressionW_putCharset(compress,L"utf-8"); CkCompressionW_putEncodingMode(compress,L"base64"); CkCompressionW_putFirstChunk(compress,TRUE); CkCompressionW_putLastChunk(compress,FALSE); bdCompressed = CkBinDataW_Create(); sbUncompressedChunk = CkStringBuilderW_Create(); for (i = 0; i <= 24; i++) { if (i == 24) { CkCompressionW_putLastChunk(compress,TRUE); } CkStringBuilderW_Clear(sbUncompressedChunk); CkStringBuilderW_AppendInt(sbUncompressedChunk,i); CkStringBuilderW_Append(sbUncompressedChunk,L": This is a line of data to be compressed...\r\n"); CkCompressionW_CompressSb(compress,sbUncompressedChunk,bdCompressed); CkCompressionW_putFirstChunk(compress,FALSE); } wprintf(L"The base64 encoded compressed text:\n"); wprintf(L"%s\n",CkBinDataW_getEncoded(bdCompressed,L"base64")); // Decompress in one call: originalText = CkCompressionW_decompressStringENC(compress,CkBinDataW_getEncoded(bdCompressed,L"base64")); wprintf(L"%s\n",originalText); CkStringBuilderW_Dispose(sbCompressedBase64); CkCompressionW_Dispose(compress); CkBinDataW_Dispose(bdCompressed); CkStringBuilderW_Dispose(sbUncompressedChunk); } |
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