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(C) Compress and Decompress a StringDemonstrates how to compress and decompress a string.
#include <C_CkStringBuilder.h> #include <C_CkCompression.h> #include <C_CkByteData.h> void ChilkatSample(void) { BOOL success; HCkStringBuilder sb; int i; HCkCompression compress; HCkByteData compressedBytes; const char *compressedBase64; const char *decompressedString; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. sb = CkStringBuilder_Create(); for (i = 1; i <= 20; i++) { CkStringBuilder_Append(sb,"This is the original uncompressed string.\r\n"); } compress = CkCompression_Create(); CkCompression_putAlgorithm(compress,"deflate"); // Indicate that the utf-8 byte representation of the string should be compressed. CkCompression_putCharset(compress,"utf-8"); compressedBytes = CkByteData_Create(); success = CkCompression_CompressString(compress,CkStringBuilder_getAsString(sb),compressedBytes); // If the compressed data is desired in string format, then get the base64 representation of the bytes. CkCompression_putEncodingMode(compress,"base64"); compressedBase64 = CkCompression_compressStringENC(compress,CkStringBuilder_getAsString(sb)); printf("Compressed Bytes as Base64: %s\n",compressedBase64); // Now decompress... decompressedString = CkCompression_decompressString(compress,compressedBytes); printf("The original string after decompressing from binary compressed data:\n"); printf("%s\n",decompressedString); // To decompress from Base64... CkCompression_putEncodingMode(compress,"base64"); decompressedString = CkCompression_decompressStringENC(compress,compressedBase64); printf("The original string after decompressing from Base64:\n"); printf("%s\n",decompressedString); CkStringBuilder_Dispose(sb); CkCompression_Dispose(compress); CkByteData_Dispose(compressedBytes); } |
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