script is intended to use inside an Xcode project's build steps. It creates a InfoPlist.strings file that are used by the system to localize Info.plist values.

createInfoPlistStrings.sh

#!/bin/bash
# Thom Ritterfeld 2016
# This script is intended to use inside an Xcode project's build steps. It creates a InfoPlist.strings file that are used by the system to localize Info.plist values.

# Define localize keys values, the values are the ones that need to be placed inside InfoPlist.strings.
# For example in Localizable.strings you defined: "note_location_disclaimer" = "we want to know where you work";
# This script will add "NSLocationWhenInUseUsageDescription" = "we want to know where you work"; into InfoPlist.strings.
# To define these keys define the key of Localizable.strings into localizable_keys and the key for InfoPlist.strings into info_plist_keys.
# Use the same positions, because of lack of good dictionary support. For the sample:
# localizable_keys=("NSLocationWhenInUseUsageDescription=note_location_disclaimer")

localizable_keys=("NSLocationWhenInUseUsageDescription=note_location_disclaimer")

# Remove old InfoPlist.strings
find . -name "*InfoPlist.strings" -delete
​
# Find all Localization files
for file in $(find . -name "*.strings")
do
  file_dir=$(dirname "${file}")
  echo "Found strings file: ${file} for language $(basename $file_dir)"

  # Loop through all localizable_keys with index
  for key_value in ${localizable_keys[@]}
  do
    # define keys of arrays using the same index
    l_key="${key_value##*=}"
    i_p_key="${key_value%%=*}"
    echo "Value of ${l_key} of ${file} into ${i_p_key} in file ${file_dir}/InfoPlist.strings"
    # search for keys | print the info_plist_key with the value of the Localization.strings | >> place into InfoPlist.strings file
    sed -n "s/\"${l_key}\" *\([^ ]*\) */\"${i_p_key}\"\1/p" $file >> "${file_dir}/InfoPlist.strings"
  done
done