(Objective-C) Set Entry Filepath (in output Zip) when Zipping

Demonstrates how to set the path for the file entry within the .zip to something different than the path in the filesystem.

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#import <CkoZip.h>
#import <CkoZipEntry.h>

// This requires the Chilkat Zip API to have been previously unlocked.
// See Unlock Chilkat Zip for sample code.

CkoZip *zip = [[CkoZip alloc] init];

BOOL success = [zip NewZip: @"qa_output/zipA.zip"];

// When an absolute filepath is passed to AppendOneFileOrDir, the path within the .zip
// will be one of two values:  (1) just the filename part if saveExtraPath is NO,
// or (2) the full absolute path, but made relative, if saveExtraPath is YES.
// (For example, "c:/ck2000/appData/UnitTest/qa_data/hamlet.xml" made relative is 
// "ck2000/appData/UnitTest/qa_data/hamlet.xml")
BOOL saveExtraPath = NO;
success = [zip AppendOneFileOrDir: @"c:/ck2000/appData/UnitTest/qa_data/hamlet.xml" saveExtraPath: saveExtraPath];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// When a relative path is passed to AppendOneFileOrDir, then saveExtraPath does not apply.
// For example, assume our current working directory is "c:/ck2000/appData/UnitTest".  The following
// call to AppendOneFileOrDir creates an entry with the filepath "qa_data/hamlet.xml".
success = [zip AppendOneFileOrDir: @"qa_data/hamlet.xml" saveExtraPath: saveExtraPath];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Examine the entries
int numEntries = [zip.NumEntries intValue];
int i = 0;
while (i < numEntries) {
    CkoZipEntry *e = [zip GetEntryByIndex: [NSNumber numberWithInt: i]];
    NSLog(@"%d%@%@",i,@": ",e.FileName);

    i = i + 1;
}

// The output so far is:

// 	0: hamlet.xml
// 	1: qa_data/hamlet.xml

// If we write the .zip as-is, then the zip will have two entries
// with the filepaths as shown above.

// This writes "qa_output/zipA.zip"
success = [zip WriteZip];

// Now change the entry filepaths to whatever is desired.
CkoZipEntry *entry = [zip GetEntryByName: @"hamlet.xml"];
if (zip.LastMethodSuccess == NO) {
    NSLog(@"%@",@"entry not found");
    return;
}

entry.FileName = @"Shakespeare/Claudius1.xml";

entry = [zip GetEntryByName: @"qa_data/hamlet.xml"];
if (zip.LastMethodSuccess == NO) {
    NSLog(@"%@",@"entry not found");
    return;
}

entry.FileName = @"Shakespeare/Claudius2.xml";

// Change the name of the .zip to be written and write again:
zip.FileName = @"qa_output/zipB.zip";
success = [zip WriteZipAndClose];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
}
else {
    NSLog(@"%@",@"Zip created!");
}

// Examine both zipA.zip and zipB.zip using 7zip (or another tool) to see the differences.