* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
- *
+ *
* http://www.apache.org/licenses/LICENSE-2.0
- *
+ *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
public class GeneralUtility {
- public static boolean generateTextFile(String fileName, String fileData) {
- boolean isSuccessfull = true;
- try {
- FileUtils.writeStringToFile(new File(fileName), fileData);
- } catch (IOException e) {
- isSuccessfull = false;
- }
- return isSuccessfull;
- }
-
- /**
- * Use with care, usage is not advised!!!
- * The method only checks if String does not contain special characters + length divided by 4 with no remainder.
- * The methods contained in other common libraries do the same.
- */
- public static boolean isBase64Encoded(byte[] data) {
- return Base64.isBase64(data);
- }
-
- /**
- *Use with care, usage is not advised!!!
- * The method only checks if String does not contain special characters + length divided by 4 with no remainder.
- * The methods contained in other common libraries do the same.
- */
- public static boolean isBase64Encoded(String str) {
- boolean isEncoded = false;
- try {
- // checks if the string was properly padded to the
- isEncoded = ((str.length() % 4 == 0) && (Pattern.matches("\\A[a-zA-Z0-9/+]+={0,2}\\z", str)));
- if (isEncoded) {
- // If no exception is caught, then it is possibly a base64
- // encoded string
- byte[] data = Base64.decodeBase64(str);
- }
-
- } catch (Exception e) {
- // If exception is caught, then it is not a base64 encoded string
- isEncoded = false;
- }
- return isEncoded;
- }
-
- /**
- * Checks whether the passed string exceeds a limit of number of characters.
- *
- * @param str
- * @param limit
- * @return the result of comparison, or false if str is null.
- */
- public static boolean isExceedingLimit(String str, int limit) {
- if (str == null) {
- return false;
- }
- return str.length() > limit;
- }
-
- /**
- * Checks the passed string list whether the cumulative length of strings and delimiters between them exceeds a limit of number of characters. For example for list ("one","two","three") with delimiter "," the length of list is calculated
- * 3+1+3+1+5=13
- *
- * @param strList
- * @param limit
- * @param delimiterLength
- * - 0 if there is no delimeter.
- * @return the result of comparison, or false if strList is null.
- */
- public static boolean isExceedingLimit(List<String> strList, int limit, int delimiterLength) {
- if (strList == null || strList.isEmpty()) {
- return false;
- }
- int sum = 0;
- int size = strList.size();
- for (int i = 0; i < size - 1; i++) {
- String str = strList.get(i);
- if (str != null) {
- sum += str.length();
- }
- sum += delimiterLength;
- }
- String str = strList.get(size - 1);
- if (str != null) {
- sum += str.length();
- }
- return sum > limit;
- }
-
- /**
- * Return the extension as the substring from the last dot. For input "kuku.txt", "txt" will be returned. If no dot is found or input is null, empty string is returned.
- *
- * @param fileName
- * @return extension
- */
- public static String getFilenameExtension(String fileName) {
- String res = Constants.EMPTY_STRING;
- if (fileName != null) {
- int indexOf = fileName.lastIndexOf('.');
- if (indexOf != -1 && indexOf < (fileName.length() - 1)) {
- res = fileName.substring(indexOf + 1);
- }
- }
- return res;
- }
-
- public static String calculateMD5Base64EncodedByByteArray(byte[] payload) {
- String decodedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(payload);
- byte[] encodeMd5 = Base64.encodeBase64(decodedMd5.getBytes());
- return new String(encodeMd5);
-
- }
-
- /**
- *
- * @param data
- * @return
- */
- public static String calculateMD5Base64EncodedByString(String data) {
- String calculatedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(data);
-
- // encode base-64 result
- byte[] encodeBase64 = Base64.encodeBase64(calculatedMd5.getBytes());
- return new String(encodeBase64);
- }
-
-
- /**
- *
- * @param String
- * @return String is null or Empty
- */
- public static boolean isEmptyString(String str) {
+ private static final int STRING_LENGTH_MULTIPLIER = 4;
+
+ public static boolean generateTextFile(String fileName, String fileData) {
+ boolean isSuccessfull = true;
+ try {
+ FileUtils.writeStringToFile(new File(fileName), fileData);
+ } catch (IOException e) {
+ isSuccessfull = false;
+ }
+ return isSuccessfull;
+ }
+
+ /**
+ * Use with care, usage is not advised!!!
+ * The method only checks if String does not contain special characters + length divided by 4 with no remainder.
+ * The methods contained in other common libraries do the same.
+ */
+ public static boolean isBase64Encoded(byte[] data) {
+ return Base64.isBase64(data);
+ }
+
+ /**
+ * Use with care, usage is not advised!!!
+ * The method only checks if String does not contain special characters + length divided by 4 with no remainder.
+ * The methods contained in other common libraries do the same.
+ */
+ public static boolean isBase64Encoded(String str) {
+ boolean isEncoded = false;
+ try {
+ // checks if the string was properly padded to the
+ isEncoded = ((str.length() % STRING_LENGTH_MULTIPLIER == 0) && (Pattern.matches("\\A[a-zA-Z0-9/+]+={0,2}\\z", str)));
+ if (isEncoded) {
+ // If no exception is caught, then it is possibly a base64
+ // encoded string
+ byte[] data = Base64.decodeBase64(str);
+ }
+
+ } catch (Exception e) {
+ // If exception is caught, then it is not a base64 encoded string
+ isEncoded = false;
+ }
+ return isEncoded;
+ }
+
+ /**
+ * Checks whether the passed string exceeds a limit of number of characters.
+ *
+ * @param str
+ * @param limit
+ * @return the result of comparison, or false if str is null.
+ */
+ public static boolean isExceedingLimit(String str, int limit) {
+ if (str == null) {
+ return false;
+ }
+ return str.length() > limit;
+ }
+
+ /**
+ * Checks the passed string list whether the cumulative length of strings and delimiters between them exceeds a limit of number of characters. For example for list ("one","two","three") with delimiter "," the length of list is calculated
+ * 3+1+3+1+5=13
+ *
+ * @param strList
+ * @param limit
+ * @param delimiterLength - 0 if there is no delimeter.
+ * @return the result of comparison, or false if strList is null.
+ */
+ public static boolean isExceedingLimit(List<String> strList, int limit, int delimiterLength) {
+ if (strList == null || strList.isEmpty()) {
+ return false;
+ }
+ int sum = 0;
+ int size = strList.size();
+ for (int i = 0; i < size - 1; i++) {
+ String str = strList.get(i);
+ if (str != null) {
+ sum += str.length();
+ }
+ sum += delimiterLength;
+ }
+ String str = strList.get(size - 1);
+ if (str != null) {
+ sum += str.length();
+ }
+ return sum > limit;
+ }
+
+ /**
+ * Return the extension as the substring from the last dot. For input "kuku.txt", "txt" will be returned. If no dot is found or input is null, empty string is returned.
+ *
+ * @param fileName
+ * @return extension
+ */
+ public static String getFilenameExtension(String fileName) {
+ String res = Constants.EMPTY_STRING;
+ if (fileName != null) {
+ int indexOf = fileName.lastIndexOf('.');
+ if (indexOf != -1 && indexOf < (fileName.length() - 1)) {
+ res = fileName.substring(indexOf + 1);
+ }
+ }
+ return res;
+ }
+
+ public static String calculateMD5Base64EncodedByByteArray(byte[] payload) {
+ String decodedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(payload);
+ byte[] encodeMd5 = Base64.encodeBase64(decodedMd5.getBytes());
+ return new String(encodeMd5);
+
+ }
+
+ /**
+ * @param data
+ * @return
+ */
+ public static String calculateMD5Base64EncodedByString(String data) {
+ String calculatedMd5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(data);
+
+ // encode base-64 result
+ byte[] encodeBase64 = Base64.encodeBase64(calculatedMd5.getBytes());
+ return new String(encodeBase64);
+ }
+
+
+ /**
+ * @param String
+ * @return String is null or Empty
+ */
+ public static boolean isEmptyString(String str) {
return str == null || str.trim().isEmpty();
}
Code Review / sdc.git / blobdiff