92 lines
2.8 KiB
Java
92 lines
2.8 KiB
Java
package hae.utils.string;
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import java.net.URL;
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import java.util.HashMap;
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import java.util.Map;
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public class StringProcessor {
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public static String replaceFirstOccurrence(String original, String find, String replace) {
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int index = original.indexOf(find);
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if (index != -1) {
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return original.substring(0, index) + replace + original.substring(index + find.length());
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}
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return original;
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}
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public static boolean matchFromEnd(String input, String pattern) {
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int inputLength = input.length();
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int patternLength = pattern.length();
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int inputIndex = inputLength - 1;
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int patternIndex = patternLength - 1;
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while (inputIndex >= 0 && patternIndex >= 0) {
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if (input.charAt(inputIndex) != pattern.charAt(patternIndex)) {
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return false;
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}
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inputIndex--;
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patternIndex--;
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}
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// 如果patternIndex为-1，表示pattern字符串已经完全匹配
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return patternIndex == -1;
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}
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public static String mergeComment(String comment) {
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if (!comment.contains(",")) {
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return comment;
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}
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Map<String, Integer> itemCounts = getStringIntegerMap(comment);
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StringBuilder mergedItems = new StringBuilder();
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for (Map.Entry<String, Integer> entry : itemCounts.entrySet()) {
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String itemName = entry.getKey();
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int count = entry.getValue();
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if (count != 0) {
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mergedItems.append(itemName).append(" (").append(count).append("), ");
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}
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}
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return mergedItems.substring(0, mergedItems.length() - 2);
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}
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public static String getHostByUrl(String url) {
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String host = "";
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try {
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URL u = new URL(url);
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int port = u.getPort();
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if (port == -1) {
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host = u.getHost();
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} else {
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host = String.format("%s:%s", u.getHost(), port);
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}
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} catch (Exception ignored) {
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}
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return host;
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}
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private static Map<String, Integer> getStringIntegerMap(String comment) {
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Map<String, Integer> itemCounts = new HashMap<>();
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String[] items = comment.split(", ");
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for (String item : items) {
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if (item.contains("(") && item.contains(")")) {
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int openParenIndex = item.lastIndexOf("(");
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int closeParenIndex = item.lastIndexOf(")");
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String itemName = item.substring(0, openParenIndex).trim();
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int count = Integer.parseInt(item.substring(openParenIndex + 1, closeParenIndex).trim());
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itemCounts.put(itemName, itemCounts.getOrDefault(itemName, 0) + count);
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} else {
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itemCounts.put(item, 0);
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}
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}
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return itemCounts;
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}
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}
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