package test20140709;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

/**

 * 以行为单位读取文件并比对，显示不同行

 * @author fushihua-wb

 * @date   2014-7-11

 */

public class compare {

	/**

	 * 以行为单位读取文件，经常使用于读面向行的格式化文件

	 */

	private static String[] readFileByLines(String fileName) {

		File file = new File(fileName);

		BufferedReader reader = null;

		String ss[] = new String[0];

		int i = 0;

		try {

			System.out.println("以行为单位读取文件内容，一次读一整行：");

			reader = new BufferedReader(new FileReader(file));

			String tempString = null;

			int line = 1;

			// 一次读入一行，直到读入null为文件结束

			while ((tempString = reader.readLine()) != null) {

				// 显示行号

				// if(tempString.contains("<url-pattern>")){

				// //System.out.println("line " + line + ":       " +

				// tempString);

				// //System.out.println("line " + line + ":       " +

				// tempString.trim());

				// //System.out.println(tempString.trim());

				// ss = insert(ss, tempString.trim());

				// i++;

				// }

				// System.out.println("line " + line + ":       " + tempString);

				ss = insert(ss, tempString.trim());

				i++;

				line++;

			}

			reader.close();

		} catch (IOException e) {

			e.printStackTrace();

		} finally {

			if (reader != null) {

				try {

					reader.close();

				} catch (IOException e1) {

				}

			}

			System.out.println("共" + i + "行");

			System.out.println("START");

			// for (String string : ss) {

			// System.out.println(string);

			// }

			// for (int j = 0;j <= ss.length;j++) {

			// System.out.println(ss[j]);

			// }

			System.out.println("END");

		}

		return ss;

	}

	/*

	 * 插入到数组

	 */

	private static String[] insert(String[] arr, String str) {

		int size = arr.length;

		String[] tmp = new String[size + 1];

		System.arraycopy(arr, 0, tmp, 0, size);

		tmp[size] = str;

		return tmp;

	}

	// 删除数组中当中一个元素

	public static String[] delString(String[] str, String delString) {

		// String [] str = {"Java", "C++", "Php", "C#", "Python"};

		// for (String elementA:str ) {

		// System.out.print(elementA + " ");

		// }

		// 删除php

		List<String> list = new ArrayList<String>();

		for (int i = 0; i < str.length; i++) {

			list.add(str[i]);

		}

		// list.remove(2);

		list.remove(delString);

		// System.out.println();

		String[] newStr = list.toArray(new String[1]); // 返回一个包括全部对象的指定类型的数组

		// for (String elementB:newStr ) {

		// System.out.print(elementB + " ");

		// }

		// System.out.println();

		return newStr;

	}

	/*

	 * 输出两个数组同样元素

	 */

	private static void compare(String fileName1, String fileName2) {

		String[] ss1 = readFileByLines(fileName1);

		String[] ss2 = readFileByLines(fileName2);

		for (String s1 : ss1) {

			for (String s2 : ss2) {

				if (s1.endsWith(s2)) {

					System.out.println(s1);

				}

			}

		}

		for (String s1 : ss2) {

			System.out.println(s1);

		}

	}

	/*

	 * 输出两个数组不同元素

	 */

	public static void compare1(String fileName1, String fileName2) {

		// String a[] = new String[]{"a","a2","b3"};

		// String b[] = new String[]{"b","b3","a2"};

		System.out.println("START");

		String[] a = readFileByLines(fileName1);

		String[] b = readFileByLines(fileName2);

		ArrayList c = new ArrayList();

		for (int i = 0; i < a.length; i++) {

			for (int j = 0; j < b.length; j++) {

				if (a[i].equals(b[j])) {

					c.add(a[i]);

				}

			}

		}

		System.out.println("仅仅在" + fileName1 + "中：");

		for (int i = 0; i < a.length; i++) {

			if (!c.contains(a[i])) {

				System.out.println(a[i] + "");

			}

		}

		System.out

				.println("----------------------------------------------------");

		System.out.println("仅仅在" + fileName2 + "中：");

		for (int i = 0; i < a.length; i++) {

			if (!c.contains(b[i])) {

				System.out.println(b[i] + "");

			}

		}

		System.out.println("END");

	}

	public static void main(String[] args) {

		// readFileByLines("D:\\web-release.xml");

		// readFileByLines("D:\\web-prod.xml");

		// readFileByLines("D:\\web-prod1.xml");

		// compare1("D:\\web-prod1.xml","D:\\web-release1.xml");

		compare1("D:\\web-release1.xml", "D:\\web-prod1.xml");

	}

}