package com.enjoyor.soa.traffic.server.tms.controller;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class FileNameTest {

private static String readFile(String filename) {
filename = filename.trim();
if (readFiles.contains(filename)) {
//循环include，则直接返回
return "######Error to read " + filename +"\n";
}

BufferedReader reader = null;
try {
readFiles.add(filename);
reader = new BufferedReader(new FileReader(filename));
String line;
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
int includeIndex = line.indexOf(INCLUDE);
if (includeIndex >= 0) {
String file = line.substring(includeIndex + INCLUDE.length());
line = readFile(file);
sb.append(line);
} else {
sb.append(line + "\n");
}
}
readFiles.remove(filename);
return sb.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

return null;
}

private static Set<String> readFiles = new HashSet<String>();
private static final String INCLUDE = "#include";
public static void main(String[] args) {
/**
* 文件内容如下：
-----------------
a.txt
A
#include b.txt
#include c.txt
#include d.txt
----------------
b.txt
B B
----------------
c.txt
C C C
----------------
d.txt
D D D D
#include b.txt
#include c.txt
---------------
e.txt
E E E E E
#include d.txt
#include e.txt
*/
String filename = "C:/Users/xujianjun/Desktop/a.txt";
System.out.println("Read a.txt---->");
String content = readFile(filename);
System.out.println(content);

filename = "C:/Users/xujianjun/Desktop/d.txt";
System.out.println("Read d.txt---->");
content = readFile(filename);
System.out.println(content);

filename = "C:/Users/xujianjun/Desktop/e.txt";
System.out.println("Read d.txt---->");
content = readFile(filename);
System.out.println(content);
}
}

filename