Generate a basic .strings file for each .plist of an iOS Settings.bundle

generate-settings-strings.command

#!/bin/bash

# NB: next line assumes that this script is in the root 
# of your Settings.bundle directory. Feel free to adapt
# accordingly.
# Reference from https://gist.github.com/simonwhitaker/2310061

#base_dir=$(cd `dirname $0` && pwd)
base_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

echo "base dir is $base_dir"
cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd

for plist in *.plist; do
# Guard against empty file
    [ -f "$plist" ] || break
    # Generate the name of the matching .strings file
    outfile=en.lproj/${plist%.*}.strings
    
    echo "Generating $outfile from $plist"
    
    # Step 1: convert plist to formatted JSON for easy parsing
    # Step 2: use Perl (old skool!) to pick out the values for the Title keys
    # Step 3: convert output to UTF-16

# Debugging to see converted json output
echo "plutil -convert json -r -o - $plist" | bash > "$base_dir/$outfile.json.txt"

# Converts plist file content to json pretty format, then regex to extract and format to a bunch of strings, which is then output to a file. The regex greedy grabs until the last quotation (ignoring commas/braces that comes after), and ignores empty spaces as well.
 plutil -convert json -r -o - $plist \
    | perl -ne '/"Title" : ([^\w].+")/ && print "$1 = $1;\n"' \
    | iconv -t UTF-16 > "$base_dir/$outfile"

#sed -i "/* A single strings file, whose title is specified in your preferences schema. The strings files provide the localized content to display to the user for each of your preferences. */" "$base_dir/$outfile"

done

read -n 1 -s -r -p "Press any key to continue"

There's an issue currently where it doesn't extract array strings like this:

"Values" : [
        "grid_view",
        "list_view"
      ],
      "Titles" : [
        "Grid View",
        "List View"
      ],

So any changes to the regex for this are welcomed.

How about this:

perl -ne '/"(?:FooterText|Title)" : (".+")/ && print "$1 = $1;\n"; if (/"(ShortTitles|Titles)"/ ... /\],/) { /(".+"),?$/ && print "$1 = $1;\n"; }'

It also handles "FooterText" and "ShortTitles".

It's a short and concise implementation for sure. I did my own in Swift. It's much longer but generates proper comments for a translator (considers group structure as well).
genstringsforsettingsbundle.swift