(Objective-C) Iterate Through Matching ZIP Entries Using EntryMatching and ZipEntry.GetNextMatch

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This example demonstrates how to iterate through ZIP entries matching a wildcard pattern using:

• Zip.EntryMatching to obtain the first matching entry
• ZipEntry.GetNextMatch to advance to subsequent matching entries

The wildcard character * matches zero or more characters. Matching is performed against the full stored ZIP entry path.

The example searches for all entries beneath the docs/ directory.

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt
images/logo.png
hello.txt

The wildcard pattern:

docs/*

Matches:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt

Note that ZIP archives may optionally contain separate directory entries. Therefore, the first matching entry may be the directory entry docs/ rather than a file entry.

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

BOOL success = NO;

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

// Open an existing ZIP archive.
success = [zip OpenZip: @"c:/temp/sample.zip"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// ------------------------------------------------------------
// Find the first ZIP entry matching the wildcard pattern:
// 
//     docs/*
// 
// Matching is performed against the full stored ZIP path.
// 
CkoZipEntry *entry = [[CkoZipEntry alloc] init];

success = [zip EntryMatching: @"docs/*" entry: entry];
if (success == NO) {
    NSLog(@"%@",@"No matching entries found.");
    [zip CloseZip];
    return;
}

// ------------------------------------------------------------
// Iterate through all matching entries.
// 
// GetNextMatch updates the same ZipEntry object so that
// it represents the next matching entry.
// 
while ((success == YES)) {
    if (entry.IsDirectory == YES) {
        NSLog(@"%@%@",@"[Directory] ",entry.FileName);
    }
    else {
        NSLog(@"%@%@",@"[File] ",entry.FileName);
    }

    // Advance to the next matching entry.
    success = [entry GetNextMatch: @"docs/*"];
}

[zip CloseZip];

NSLog(@"%@",@"Done.");