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(Unicode C) Append Dir Tree to Existing Zip w/out Rewriting Entire ZipDemonstrates how to use the QuickAppend method to append a directory tree to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. Note: The QuickAppend method is new and available in the pre-release downloads, or in official releases dated after 6-October-2007.
#include <C_CkZipW.h> void ChilkatSample(void) { HCkZipW zip; BOOL success; BOOL recurse; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. zip = CkZipW_Create(); // The NewZip method only initializes the Zip object -- it does // not create or write a .zip file. success = CkZipW_NewZip(zip,L"notUsed.zip"); if (success != TRUE) { wprintf(L"%s\n",CkZipW_lastErrorText(zip)); CkZipW_Dispose(zip); return; } // Add a references to all files in a directory tree. // Note: this does not read or compress the file contents -- // it simply adds file references to the zip object. recurse = TRUE; success = CkZipW_AppendFiles(zip,L"c:/temp/abc123/*",recurse); if (success != TRUE) { wprintf(L"%s\n",CkZipW_lastErrorText(zip)); CkZipW_Dispose(zip); return; } // Appends the contents of the zip object to the preExisting.zip // zip archive. preExisting.zip is opened, and the files // referenced by this zip object are streamed in, compressed, // and appended to the end of the archive. success = CkZipW_QuickAppend(zip,L"preExisting.zip"); if (success != TRUE) { wprintf(L"%s\n",CkZipW_lastErrorText(zip)); CkZipW_Dispose(zip); return; } wprintf(L"Success!\n"); // Note: Additional files, directory trees, or in-memory data // can be appended by calling AppendOneFileOrDir, AppendFiles, // AppendString, AppendData, etc. multiple times. // Whatever files and/or in-memory data that are referenced by // this zip object will be appended to preExisting.zip when // QuickAppend is called CkZipW_Dispose(zip); } |
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