package org.springblade.modules.words;
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import org.springblade.modules.words.internals.BaseSearch;
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import org.springblade.modules.words.internals.TrieNode2;
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import java.util.ArrayList;
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import java.util.List;
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public class WordsSearch extends BaseSearch {
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public String[] _others;
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/**
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* 在文本中查找第一个关键字
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*
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* @param text 文本
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* @return
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*/
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public WordsSearchResult FindFirst(final String text) {
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TrieNode2 ptr = null;
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for (int i = 0; i < text.length(); i++) {
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final char t = text.charAt(i);
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TrieNode2 tn = null;
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if (ptr == null) {
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tn = _first[t];
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} else {
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if (ptr.HasKey(t) == false) {
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tn = _first[t];
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} else {
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tn = ptr.GetValue(t);
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}
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}
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if (tn != null) {
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if (tn.End) {
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for (final Integer index : tn.Results) {
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final String key = _keywords[index];
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return new WordsSearchResult(key, i + 1 - key.length(), i, index);
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}
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}
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}
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ptr = tn;
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}
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return null;
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}
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/**
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* 在文本中查找所有的关键字
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*
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* @param text 文本
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* @return
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*/
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public List<WordsSearchResult> FindAll(final String text) {
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TrieNode2 ptr = null;
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final List<WordsSearchResult> list = new ArrayList<WordsSearchResult>();
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for (int i = 0; i < text.length(); i++) {
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final char t = text.charAt(i);
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TrieNode2 tn = null;
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if (ptr == null) {
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tn = _first[t];
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} else {
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if (ptr.HasKey(t) == false) {
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tn = _first[t];
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} else {
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tn = ptr.GetValue(t);
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}
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}
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if (tn != null) {
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if (tn.End) {
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for (final Integer index : tn.Results) {
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final String key = _keywords[index];
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final WordsSearchResult item = new WordsSearchResult(key, i + 1 - key.length(), i, index);
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list.add(item);
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}
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}
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}
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ptr = tn;
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}
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return list;
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}
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/**
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* 判断文本是否包含关键字
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*
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* @param text 文本
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* @return
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*/
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public boolean ContainsAny(final String text) {
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TrieNode2 ptr = null;
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for (int i = 0; i < text.length(); i++) {
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final char t = text.charAt(i);
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TrieNode2 tn = null;
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if (ptr == null) {
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tn = _first[t];
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} else {
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if (ptr.HasKey(t) == false) {
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tn = _first[t];
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} else {
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tn = ptr.GetValue(t);
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}
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}
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if (tn != null) {
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if (tn.End) {
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return true;
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}
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}
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ptr = tn;
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}
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return false;
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}
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/**
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* 在文本中替换所有的关键字, 替换符默认为 *
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*
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* @param text 文本
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* @return
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*/
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public String Replace(final String text) {
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return Replace(text, '*');
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}
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/**
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* 在文本中替换所有的关键字
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*
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* @param text 文本
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* @param replaceChar 替换符
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* @return
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*/
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public String Replace(final String text, final char replaceChar) {
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final StringBuilder result = new StringBuilder(text);
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TrieNode2 ptr = null;
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for (int i = 0; i < text.length(); i++) {
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final char t = text.charAt(i);
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TrieNode2 tn = null;
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if (ptr == null) {
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tn = _first[t];
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} else {
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if (ptr.HasKey(t) == false) {
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tn = _first[t];
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} else {
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tn = ptr.GetValue(t);
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}
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}
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if (tn != null) {
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if (tn.End) {
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final int maxLength = _keywords[tn.Results.get(0)].length();
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final int start = i + 1 - maxLength;
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for (int j = start; j <= i; j++) {
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result.setCharAt(j, replaceChar);
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}
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}
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}
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ptr = tn;
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}
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return result.toString();
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}
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}
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