Automatically minifies all JSON files after building (release or debug).

JSONPrettyToUgly.py

#!/usr/bin/python

#-------------------------
# Import the dependencies
#-------------------------
import json, sys
#-------------------------

#-------------------------------------
# Get the file names from the argument
#-------------------------------------
files = sys.argv[1:]
#-------------------------------------

#-------------------------------------
# Repeat for all the files
#-------------------------------------
for jsonFile in files:
#-------------------------------------
    
    #-------------------------
    # Open the file 
    #-------------------------
    with open(jsonFile) as f:
        data = json.load(f)
    #-------------------------
    
    #-------------------------
    # Compact JSON encoding
    #-------------------------
    compressed = json.dumps(data, separators=( ',', ':' ))
    #-------------------------
    
    #-------------------------------------------
    # Replace the contents with the compact JSON
    #-------------------------------------------
    with open(jsonFile, 'w') as f:
        f.write(compressed)
    #-------------------------------------------

#-------------------------------------

xcode-auto-json-minify.sh

# xcode-auto-json-minify.sh
# Author: Dominik Hadl (@dominikhadl)
# @desc Automatically minifies all JSON files after building (release or debug).
# @usage
# 1. Add 'JSONPrettyToUgly.py' script to your project (make sure 'copy files if needed blabla...' checkbox is selected) and uncheck your target.
# 2. Go to your project (blue icon in the top of file navigator), select your target, then to "Build Phases" and "Add Build Phase" with "Add Run Script".
# 3. Move the script after the "Copy Bundle Resources" phase and paste in this script.
# 4. Enjoy minifed JSON files and faster loading times on the device or simulator! :)

PYTHONSCRIPT=$(find "${SRCROOT}" -name "JSONPrettyToUgly.py");
find "${BUILT_PRODUCTS_DIR}" -name "*.json" -exec "$PYTHONSCRIPT" {} \;