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(C++) Compress String Feed to Base64This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed data in base64. The purpose is to demonstrate the BeginCompressStringENC, MoreCompressStringENC, and EndCompressStringENC methods.
#include <CkStringBuilder.h> #include <CkCompression.h> void ChilkatSample(void) { // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. bool success; CkStringBuilder sbCompressedBase64; CkCompression compress; compress.put_Algorithm("deflate"); compress.put_Charset("utf-8"); compress.put_EncodingMode("base64"); CkStringBuilder sbIndex; int i; for (i = 0; i <= 24; i++) { // Note: It is possible (and normal) for a BeginCompress* or MoreCompress* method to return // an empty string (or 0 bytes). When this happens, the input data is not lost. It will be flushed // in a subsequent call. sbIndex.Clear(); sbIndex.AppendInt(i); if (i == 0) { sbCompressedBase64.Append(compress.beginCompressStringENC(sbIndex.getAsString())); } else { sbCompressedBase64.Append(compress.moreCompressStringENC(sbIndex.getAsString())); } sbCompressedBase64.Append(compress.moreCompressStringENC(": This is a line of data to be compressed...\r\n")); } // Flush any remaining output. sbCompressedBase64.Append(compress.endCompressStringENC()); std::cout << "The base64 encoded compressed text:" << "\r\n"; std::cout << sbCompressedBase64.getAsString() << "\r\n"; // Now decompress in one call: const char *originalText = compress.decompressStringENC(sbCompressedBase64.getAsString()); std::cout << originalText << "\r\n"; } |
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