Subversion is a popular version control system used by developers to manage and track changes to their code. It allows for multiple people to work on the same project simultaneously, keeping a record of all changes made and allowing for easy collaboration. One useful feature of Subversion is the ability to insert the current revision number into code, which can be especially helpful when working with Xcode, Apple's integrated development environment for building apps for their various platforms.
To insert the Subversion revision number into Xcode, there are a few steps you need to follow. First, you will need to have Subversion installed and set up on your computer. If you are not familiar with Subversion, there are plenty of resources available online to help you get started.
Once Subversion is set up, you can start integrating it into your Xcode project. The first step is to open your Xcode project and select the target you want to add the revision number to. Next, go to the Build Settings tab and search for the "Preprocessor Macros" setting. Double-click on it to open the editor and then click on the "+" button to add a new macro.
In the macro editor, type in "SVN_REVISION" as the name of the macro and then click on the "Done" button. This will add the macro to your project's preprocessor macros. Next, you will need to add a build phase to your project. To do this, click on the "Build Phases" tab and then click on the "+" button at the top left corner of the tab. Select "New Run Script Phase" from the drop-down menu.
In the new run script phase, type in the following command:
echo "#define SVN_REVISION @\"$SVN_REVISION\"" > ${TARGET_BUILD_DIR}/${INFOPLIST_PATH}.tmp
This command will write the current Subversion revision number to a temporary file. Next, you will need to add another command to replace the original Info.plist file with the new one that contains the revision number. In the same run script phase, add the following command:
mv ${TARGET_BUILD_DIR}/${INFOPLIST_PATH}.tmp ${TARGET_BUILD_DIR}/${INFOPLIST_PATH}
This command will replace the original Info.plist file with the new one that contains the revision number. Finally, make sure to drag the run script phase so that it is executed before the "Copy Bundle Resources" phase.
At this point, you should be able to build your project and have the Subversion revision number automatically inserted into your code. To verify that the revision number is being inserted correctly, you can check the Info.plist file in your project's build folder.
Having the Subversion revision number automatically inserted into your code can be very useful for tracking changes and keeping a record of which version of your code was used to build your app. It can also be helpful when working with multiple developers, as it allows for easy identification of which version of the code each developer is working on.
In conclusion, integrating Subversion into Xcode and inserting the revision number into your code is a straightforward process that can greatly benefit your development workflow. With the revision number automatically inserted, you can keep track of changes and collaborate with other developers more efficiently. So if you haven't already, give it a try and see how it can improve your development process.
