private static List readStickers()

in Android/app/src/main/java/com/example/samplestickerapp/ContentFileParser.java [151:191]
39 lines of code
11 McCabe index (conditional complexity)

    private static List<Sticker> readStickers(@NonNull JsonReader reader) throws IOException, IllegalStateException {
        reader.beginArray();
        List<Sticker> stickerList = new ArrayList<>();

        while (reader.hasNext()) {
            reader.beginObject();
            String imageFile = null;
            List<String> emojis = new ArrayList<>(StickerPackValidator.EMOJI_MAX_LIMIT);
            while (reader.hasNext()) {
                final String key = reader.nextName();
                if ("image_file".equals(key)) {
                    imageFile = reader.nextString();
                } else if ("emojis".equals(key)) {
                    reader.beginArray();
                    while (reader.hasNext()) {
                        String emoji = reader.nextString();
                        if (!TextUtils.isEmpty(emoji)) {
                            emojis.add(emoji);
                        }
                    }
                    reader.endArray();

                } else {
                    throw new IllegalStateException("unknown field in json: " + key);
                }
            }
            reader.endObject();
            if (TextUtils.isEmpty(imageFile)) {
                throw new IllegalStateException("sticker image_file cannot be empty");
            }
            if (!imageFile.endsWith(".webp")) {
                throw new IllegalStateException("image file for stickers should be webp files, image file is: " + imageFile);
            }
            if (imageFile.contains("..") || imageFile.contains("/")) {
                throw new IllegalStateException("the file name should not contain .. or / to prevent directory traversal, image file is:" + imageFile);
            }
            stickerList.add(new Sticker(imageFile, emojis));
        }
        reader.endArray();
        return stickerList;
    }