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A utility for configuring iOS and OSX applications for different environments

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About

Backdrop is a utility for configuring an application's Info.plist file for separate environments. It can be used:

  • In dev environments for quickly switching between dev, staging, production environments.
  • On continuous integration build servers to automate deployment of pre-configured builds.

How Does it Work?

  • We create an EnvFile.plist that declares the properties (icon file, TyphoonConfig, CFBundleID, etc) that will be different between each environment.
  • We use a cmd-line utility to apply those configurations.

Optionally, the cmd-line utility can apply a build number - CFBundleVersion - in the format: <week_number_since_project_start>.<day_in_week>.<build_number_for_day>

Running

Apply the config named 'staging' in the EnvFile.plist, and generate a new version number.

backdrop.swift --select staging --newVersion

Using in CI Environments

Here's how we do it:

  • Set up a branch for each environment in git, and set up a Jenkins job to monitor for pushes to those branches.
  • Exececute the follow script to build and upload to iTunes Connect

(the script below uses Shenzhen to upload the build)

#!/bin/sh


product_name='AmazingApp'
provisioning_profile='My Store Profile'

#Fail immediately if a task fails
set -e
set -o pipefail

echo "--- Backing up Info.plist ---"
cp "./$product_name/Supporting Files/Info.plist" "./$product_name/Supporting Files/Info.plist.bak"

echo "--- Building ---"

rm -fr ./$product_name.ipa
rm -fr ./$product_name.xcarchive/

./backdrop.swift --select production --newVersion

xcodebuild -workspace $product_name.xcworkspace/ -scheme $product_name -destination 'generic/platform=iOS' -archivePath "$product_name.xcarchive" archive | xcpretty
xcodebuild -exportArchive -exportFormat ipa -archivePath "$product_name.xcarchive"  -exportPath "$product_name.ipa" -exportProvisioningProfile "$provisioning_profile"
ipa info $product_name.ipa

echo "------ Built ------"
rm "./$product_name/Supporting Files/Info.plist"
mv "./$product_name/Supporting Files/Info.plist.bak" "./$product_name/Supporting Files/Info.plist"
./backdrop.swift

Installing

Later we'll publish to Brew and MacPorts, but for now, this executable Swift script can be used.

TODO

  1. Make backdrop peform the build and upload to iTunes Connect, rather than use the bash script above.
  2. Remove the dependency on Shenzhen ipa distribute task.
  3. Add generation of debug symbols and tie in to our (or others?) crash reporters

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A utility for configuring iOS and OSX applications for different environments

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