package stirling.software.SPDF.utils; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.ArrayList; import java.util.List; public class GeneralUtils { public static Long convertSizeToBytes(String sizeStr) { if (sizeStr == null) { return null; } sizeStr = sizeStr.trim().toUpperCase(); try { if (sizeStr.endsWith("KB")) { return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024); } else if (sizeStr.endsWith("MB")) { return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024); } else if (sizeStr.endsWith("GB")) { return (long) (Double.parseDouble(sizeStr.substring(0, sizeStr.length() - 2)) * 1024 * 1024 * 1024); } else if (sizeStr.endsWith("B")) { return Long.parseLong(sizeStr.substring(0, sizeStr.length() - 1)); } else { // Input string does not have a valid format, handle this case } } catch (NumberFormatException e) { // The numeric part of the input string cannot be parsed, handle this case } return null; } public static List parsePageList(String[] pageOrderArr, int totalPages) { List newPageOrder = new ArrayList<>(); // loop through the page order array for (String element : pageOrderArr) { // check if the element contains a range of pages if (element.matches("\\d*n\\+?-?\\d*|\\d*\\+?n")) { // Handle page order as a function int coefficient = 0; int constant = 0; boolean coefficientExists = false; boolean constantExists = false; if (element.contains("n")) { String[] parts = element.split("n"); if (!parts[0].equals("") && parts[0] != null) { coefficient = Integer.parseInt(parts[0]); coefficientExists = true; } if (parts.length > 1 && !parts[1].equals("") && parts[1] != null) { constant = Integer.parseInt(parts[1]); constantExists = true; } } else if (element.contains("+")) { constant = Integer.parseInt(element.replace("+", "")); constantExists = true; } for (int i = 1; i <= totalPages; i++) { int pageNum = coefficientExists ? coefficient * i : i; pageNum += constantExists ? constant : 0; if (pageNum <= totalPages && pageNum > 0) { newPageOrder.add(pageNum - 1); } } } else if (element.contains("-")) { // split the range into start and end page String[] range = element.split("-"); int start = Integer.parseInt(range[0]); int end = Integer.parseInt(range[1]); // check if the end page is greater than total pages if (end > totalPages) { end = totalPages; } // loop through the range of pages for (int j = start; j <= end; j++) { // print the current index newPageOrder.add(j - 1); } } else { // if the element is a single page newPageOrder.add(Integer.parseInt(element) - 1); } } return newPageOrder; } public static boolean createDir(String path) { Path folder = Paths.get(path); if (!Files.exists(folder)) { try { Files.createDirectories(folder); } catch (IOException e) { e.printStackTrace(); return false; } } return true; } }