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Removed dependency on Apache Commons-lang. Jsoup now has no external …
…dependencies.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| package org.jsoup.helper; | ||
|
|
||
| import java.util.Collection; | ||
| import java.util.Iterator; | ||
|
|
||
| /** | ||
| * A minimal String utility class. Designed for interal jsoup use only. | ||
| */ | ||
| public final class StringUtil { | ||
| // memoised padding up to 10 | ||
| private static final String[] padding = {"", " ", " ", " ", " ", " ", " ", " ", " ", " ", " "}; | ||
|
|
||
| /** | ||
| * Join a collection of strings by a seperator | ||
| * @param strings collection of string objects | ||
| * @param sep string to place between strings | ||
| * @return joined string | ||
| */ | ||
| public static String join(Collection<String> strings, String sep) { | ||
| return join(strings.iterator(), sep); | ||
| } | ||
|
|
||
| /** | ||
| * Join a collection of strings by a seperator | ||
| * @param strings iterator of string objects | ||
| * @param sep string to place between strings | ||
| * @return joined string | ||
| */ | ||
| public static String join(Iterator<String> strings, String sep) { | ||
| if (!strings.hasNext()) | ||
| return ""; | ||
|
|
||
| String start = strings.next(); | ||
| if (!strings.hasNext()) // only one, avoid builder | ||
| return start; | ||
|
|
||
| StringBuilder sb = new StringBuilder(64).append(start); | ||
| while (strings.hasNext()) { | ||
| sb.append(sep); | ||
| sb.append(strings.next()); | ||
| } | ||
| return sb.toString(); | ||
| } | ||
|
|
||
| /** | ||
| * Returns space padding | ||
| * @param width amount of padding desired | ||
| * @return string of spaces * width | ||
| */ | ||
| public static String padding(int width) { | ||
| if (width < 0) | ||
| throw new IllegalArgumentException("width must be > 0"); | ||
|
|
||
| if (width < padding.length) | ||
| return padding[width]; | ||
|
|
||
| char[] out = new char[width]; | ||
| for (int i = 0; i < width; i++) | ||
| out[i] = ' '; | ||
| return String.valueOf(out); | ||
| } | ||
|
|
||
| /** | ||
| * Tests if a string is blank: null, emtpy, or only whitespace (" ", \r\n, \t, etc) | ||
| * @param string string to test | ||
| * @return if string is blank | ||
| */ | ||
| public static boolean isBlank(String string) { | ||
| if (string == null || string.length() == 0) | ||
| return true; | ||
|
|
||
| int l = string.length(); | ||
| for (int i = 0; i < l; i++) { | ||
| if (!Character.isWhitespace(string.codePointAt(i))) | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Tests if a string is numeric, i.e. contains only digit characters | ||
| * @param string string to test | ||
| * @return true if only digit chars, false if empty or null or contains non-digit chrs | ||
| */ | ||
| public static boolean isNumeric(String string) { | ||
| if (string == null || string.length() == 0) | ||
| return false; | ||
|
|
||
| int l = string.length(); | ||
| for (int i = 0; i < l; i++) { | ||
| if (!Character.isDigit(string.codePointAt(i))) | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package org.jsoup.helper; | ||
|
|
||
| import java.util.Collection; | ||
|
|
||
| /** | ||
| * Simple validation methods. Designed for jsoup internal use | ||
| */ | ||
| public final class Validate { | ||
|
|
||
| /** | ||
| * Validates that the obect is not null | ||
| * @param obj object to test | ||
| */ | ||
| public static void notNull(Object obj) { | ||
| if (obj == null) | ||
| throw new IllegalArgumentException("Object must not be null"); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the object is not null | ||
| * @param obj object to test | ||
| * @param msg message to output if validation fails | ||
| */ | ||
| public static void notNull(Object obj, String msg) { | ||
| if (obj == null) | ||
| throw new IllegalArgumentException(msg); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the value is true | ||
| * @param val object to test | ||
| */ | ||
| public static void isTrue(boolean val) { | ||
| if (!val) | ||
| throw new IllegalArgumentException("Must be true"); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the value is true | ||
| * @param val object to test | ||
| * @param msg message to output if validation fails | ||
| */ | ||
| public static void isTrue(boolean val, String msg) { | ||
| if (!val) | ||
| throw new IllegalArgumentException(msg); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the array contains no null elements | ||
| * @param objects the array to test | ||
| */ | ||
| public static void noNullElements(Object[] objects) { | ||
| noNullElements(objects, "Array must not contain any null objects"); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the array contains no null elements | ||
| * @param objects the array to test | ||
| * @param msg message to output if validation fails | ||
| */ | ||
| public static void noNullElements(Object[] objects, String msg) { | ||
| for (Object obj : objects) | ||
| if (obj == null) | ||
| throw new IllegalArgumentException(msg); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the string is not empty | ||
| * @param string the string to test | ||
| */ | ||
| public static void notEmpty(String string) { | ||
| if (string == null || string.length() == 0) | ||
| throw new IllegalArgumentException("String must not be empty"); | ||
| } | ||
|
|
||
| /** | ||
| * Validates that the string is not empty | ||
| * @param string the string to test | ||
| * @param msg message to output if validation fails | ||
| */ | ||
| public static void notEmpty(String string, String msg) { | ||
| if (string == null || string.length() == 0) | ||
| throw new IllegalArgumentException(msg); | ||
| } | ||
| } |
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