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(Unicode C) Compress and Decompress a StringDemonstrates how to compress and decompress a string.
#include <C_CkStringBuilderW.h> #include <C_CkCompressionW.h> #include <C_CkByteData.h> void ChilkatSample(void) { BOOL success; HCkStringBuilderW sb; int i; HCkCompressionW compress; HCkByteData compressedBytes; const wchar_t *compressedBase64; const wchar_t *decompressedString; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. sb = CkStringBuilderW_Create(); for (i = 1; i <= 20; i++) { CkStringBuilderW_Append(sb,L"This is the original uncompressed string.\r\n"); } compress = CkCompressionW_Create(); CkCompressionW_putAlgorithm(compress,L"deflate"); // Indicate that the utf-8 byte representation of the string should be compressed. CkCompressionW_putCharset(compress,L"utf-8"); compressedBytes = CkByteData_Create(); success = CkCompressionW_CompressString(compress,CkStringBuilderW_getAsString(sb),compressedBytes); // If the compressed data is desired in string format, then get the base64 representation of the bytes. CkCompressionW_putEncodingMode(compress,L"base64"); compressedBase64 = CkCompressionW_compressStringENC(compress,CkStringBuilderW_getAsString(sb)); wprintf(L"Compressed Bytes as Base64: %s\n",compressedBase64); // Now decompress... decompressedString = CkCompressionW_decompressString(compress,compressedBytes); wprintf(L"The original string after decompressing from binary compressed data:\n"); wprintf(L"%s\n",decompressedString); // To decompress from Base64... CkCompressionW_putEncodingMode(compress,L"base64"); decompressedString = CkCompressionW_decompressStringENC(compress,compressedBase64); wprintf(L"The original string after decompressing from Base64:\n"); wprintf(L"%s\n",decompressedString); CkStringBuilderW_Dispose(sb); CkCompressionW_Dispose(compress); CkByteData_Dispose(compressedBytes); } |
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