hmap is a command line tool to work with Clang header maps produced by Xcode. It is written in Swift.

NOTE: I've also created chmap, a cross-platform tool which provides similar functionality as hmap.

• Homebrew: brew install milend/taps/hmap
• Grab a release from GitHub.
• Build from source. See instructions below.

To print the contents of a header map:

hmap print ~/path/to/header_map.hmap

To convert the contents of a binary header map to JSON:

hmap convert ~/header_map.hmap ~/header_map.json

hmap deduces file formats by looking at the file extensions of the paths.

You can also use the convert command to create a binary header map from JSON:

hmap convert ~/header_map.json ~/header_map.hmap

You can discover all the commands and options by using hmap --help.

• hmap requires Swift 5.
• Starting from Xcode 10.2, Swift 5 command line tools require the Swift 5 runtime libraries which are included in macOS Majave 10.4.4. If you're running an earlier version of macOS, you need to install the Swift 5 Runtime Support for Command Line Tools.

Before building with Xcode, you must download all dependencies by running:

swift package update

Then generate an Xcode project by running:

swift package generate-xcodeproj

If you would like to build from the command line, run:

swift build

To produce a release build suitable for distribution, run:

swift build -c release

To verify that all tests pass, run:

swift test