Find uses of non-localized NSLocalizedString by scanning the projects files

testLocalizations.sh

#!/bin/bash
IFS=$'\n'

# List of all localized strings by cat over all string files, then removing comments, empty lines
# result is a list of strings like this (including paranthesis): "order_list.title"
#   - Remove comments from result: | grep -v '/\*' \ 
#   - Remove empty lines: | grep -v '^$' \
LOCALIZED_STRINGS=$(\
  find . -name '*.strings' -not -path './Pods/*' -print0 | xargs -0 cat \
  | grep -v '/\*' \
  | grep -v '^$' \
  | awk '{ print $1 }' \
)

# List of used localized strings, find lines in files with grep, extract string with perl, then filtering out duplicates
# egrep -o is used to split multiple matches in a single line into multiple lines
OCCURANCES=$( \
  grep --exclude-dir="Pods" -hR LocalizedString\(@\".* . \
  | egrep -o 'LocalizedString\(@"[^"]*[^)]*)' \
  | perl -n -e'/LocalizedString\(@"([^"]+)"/ && print $1 . "\n"' \
  | sort \
  | uniq \
)

function countLocalizations {
  UNTRIMMED=$(echo "${LOCALIZED_STRINGS}" | grep "^\"$1\"$" | wc -l)
  echo $UNTRIMMED | sed 's/[[:space:]]//g'
}

function isLocalisationUsed {
  LOCALISATION=`echo $1 | sed s/\"//g`
  MATCH=$(echo "${OCCURANCES}" | grep "^$LOCALISATION$")
  echo $MATCH
}

echo Count localisation definitions
for I in $(echo "${OCCURANCES}"); do
  echo $(countLocalizations "$I") -  $I;
done;

echo Show unused localisations
for I in $(echo "${LOCALIZED_STRINGS}" | sort | uniq); do
        if [ "`isLocalisationUsed $I`" = "" ]; then
                echo $I is not used
        fi;
done;

Finds all occurences of localizations by grepping for "LocalizedString".
Then counting how often this string appears in *.strings files.
This allows you to check if a string has been translated for all your languages.

This would match to MyApp.title and test your *.strings files how many localizations exist for this string

NSSting *title = NSLocalizedString(@"MyApp.title", nil);