A script meant to remove unwanted architectures from static libraries and report missing ones

lipo-libraries.sh

#!/bin/bash

contains() {
	local match="$1"
	shift
	local list=( "${@}" )
	
	for item in "${list[@]}"; do
		if [[ "${item}" == "${match}" ]]; then
			echo true
			return 1
		fi
	done
	
	echo false
	return 0
}

read -r -a libraries <<< "$1"
read -r -a valid_architectures <<< "$2"

echo "Libraries to check ${libraries[*]}"
echo "Required architectures ${valid_architectures[*]}"

# Check each static library for the included architectures and toss anything that shouldn't be included
for library in "${libraries[@]}"; do
	declare -a archive_library_architectures=()
	# Handle finding the architectures in a static library, fat or not.
    read -r -a archive_library_architectures <<< "$( lipo -detailed_info "${library}" |
                                        		     grep architecture |
                                        		     sed -e 's/.*architecture:\{0,1\} \{0,1\}//' |
                                        		     tr '\r\n' ' ' |
                                        		     xargs echo -n )"
    echo "${library} contains ${archive_library_architectures[*]}"
    
    missing_architectures=()
    for valid_architecture in "${valid_architectures[@]}"; do
    	has_architecture=$( contains "${valid_architecture}" "${archive_library_architectures[@]}" )
    	if [[ "${has_architecture}" = false ]]; then
            missing_architectures+=( "${valid_architecture}" )
        fi
    done
    
    if [ "${#missing_architectures[@]}" -gt 0 ]; then
    	echo "${library} missing ${missing_architectures[*]}"
    fi
    
    invalid_architectures=()
    for archive_library_architecture in "${archive_library_architectures[@]}"; do
        has_architecture=$( contains "${archive_library_architecture}" "${valid_architectures[@]}" )
        if [[ "${has_architecture}" = false ]]; then
            invalid_architectures+=( "${archive_library_architecture}" )
        fi
    done
        
    for invalid_architecture in "${invalid_architectures[@]}"; do
    	echo "lipo -remove ${invalid_architecture} -output ${library} $library"
#  	    lipo -remove "${invalid_architecture}" -output "${library}" "$library"
	done
done