Big-endian UTF-16 Unicode text

操做系統環境：Windows 7 6-bit，安裝mingw和msys

有兩個文件，用cat命令看不出來區別：

D:\code\cxx>cat b.cpp c.cpp

#include <iostream>

using namespace std;

 

int

main(void)

{

    cout << "aaaaabbbbb" << endl;

    return 0;

}

#include <iostream>

using namespace std;

 

int

main(void)

{

    cout << "aaaaabbbbb" << endl;

    return 0;

}

 

 

D:\code\cxx>

 

可是用type命令就出現了區別：

D:\code\cxx>type b.cpp c.cpp

 

b.cpp

 

 

??

c.cpp

 

 

#include <iostream>

using namespace std;

 

int

main(void)

{

    cout << "aaaaabbbbb" << endl;

    return 0;

}

 

 

D:\code\cxx>

能夠看到對b.cpp文件，type命令沒法讀出其內容。

進一步，採用file命令查看文件屬性：

D:\code\cxx>file b.cpp c.cpp

b.cpp: Big-endian UTF-16 Unicode text, with CRLF line terminators

c.cpp: ASCII C program text, with CRLF line terminators

而後，咱們用mingw-g++編譯，對c.cpp沒有問題，一次即過。

可是對於b.cpp，編譯結果以下：

D:\code\cxx>g++ b.cpp

b.cpp:1:1: error: stray '\376' in program

b.cpp:1:1: error: stray '\377' in program

b.cpp:1:1: error: stray '\376' in program

b.cpp:1:1: error: stray '\377' in program

b.cpp:1:5: warning: null character(s) ignored [enabled by default]

b.cpp:1:1: error: stray '#' in program

b.cpp:1:7: warning: null character(s) ignored [enabled by default]

b.cpp:1:9: warning: null character(s) ignored [enabled by default]

b.cpp:1:11: warning: null character(s) ignored [enabled by default]

b.cpp:1:13: warning: null character(s) ignored [enabled by default]

b.cpp:1:15: warning: null character(s) ignored [enabled by default]

b.cpp:1:17: warning: null character(s) ignored [enabled by default]

b.cpp:1:19: warning: null character(s) ignored [enabled by default]

b.cpp:1:21: warning: null character(s) ignored [enabled by default]

b.cpp:1:25: warning: null character(s) ignored [enabled by default]

b.cpp:1:27: warning: null character(s) ignored [enabled by default]

b.cpp:1:29: warning: null character(s) ignored [enabled by default]

b.cpp:1:31: warning: null character(s) ignored [enabled by default]

b.cpp:1:33: warning: null character(s) ignored [enabled by default]

b.cpp:1:35: warning: null character(s) ignored [enabled by default]

b.cpp:1:37: warning: null character(s) ignored [enabled by default]

b.cpp:1:39: warning: null character(s) ignored [enabled by default]

b.cpp:1:41: warning: null character(s) ignored [enabled by default]

b.cpp:1:43: warning: null character(s) ignored [enabled by default]

b.cpp:2:1: warning: null character(s) ignored [enabled by default]

b.cpp:3:1: warning: null character(s) ignored [enabled by default]

b.cpp:3:3: warning: null character(s) ignored [enabled by default]

b.cpp:3:5: warning: null character(s) ignored [enabled by default]

b.cpp:3:7: warning: null character(s) ignored [enabled by default]

b.cpp:3:9: warning: null character(s) ignored [enabled by default]

b.cpp:3:11: warning: null character(s) ignored [enabled by default]

b.cpp:3:15: warning: null character(s) ignored [enabled by default]

b.cpp:3:17: warning: null character(s) ignored [enabled by default]

b.cpp:3:19: warning: null character(s) ignored [enabled by default]

b.cpp:3:21: warning: null character(s) ignored [enabled by default]

b.cpp:3:23: warning: null character(s) ignored [enabled by default]

b.cpp:3:25: warning: null character(s) ignored [enabled by default]

b.cpp:3:27: warning: null character(s) ignored [enabled by default]

b.cpp:3:29: warning: null character(s) ignored [enabled by default]

b.cpp:3:31: warning: null character(s) ignored [enabled by default]

b.cpp:3:35: warning: null character(s) ignored [enabled by default]

b.cpp:3:37: warning: null character(s) ignored [enabled by default]

b.cpp:3:39: warning: null character(s) ignored [enabled by default]

b.cpp:3:41: warning: null character(s) ignored [enabled by default]

b.cpp:4:1: warning: null character(s) ignored [enabled by default]

b.cpp:5:1: warning: null character(s) ignored [enabled by default]

b.cpp:6:1: warning: null character(s) ignored [enabled by default]

b.cpp:7:1: warning: null character(s) ignored [enabled by default]

b.cpp:7:3: warning: null character(s) ignored [enabled by default]

b.cpp:7:5: warning: null character(s) ignored [enabled by default]

b.cpp:7:7: warning: null character(s) ignored [enabled by default]

b.cpp:8:1: warning: null character(s) ignored [enabled by default]

b.cpp:9:1: warning: null character(s) ignored [enabled by default]

b.cpp:9:3: warning: null character(s) ignored [enabled by default]

b.cpp:9:5: warning: null character(s) ignored [enabled by default]

b.cpp:9:7: warning: null character(s) ignored [enabled by default]

b.cpp:9:9: warning: null character(s) ignored [enabled by default]

b.cpp:9:11: warning: null character(s) ignored [enabled by default]

b.cpp:9:13: warning: null character(s) ignored [enabled by default]

b.cpp:9:15: warning: null character(s) ignored [enabled by default]

b.cpp:9:17: warning: null character(s) ignored [enabled by default]

b.cpp:9:19: warning: null character(s) ignored [enabled by default]

b.cpp:9:21: warning: null character(s) ignored [enabled by default]

b.cpp:10:1: warning: null character(s) ignored [enabled by default]

b.cpp:11:1: warning: null character(s) ignored [enabled by default]

b.cpp:11:3: warning: null character(s) ignored [enabled by default]

b.cpp:12:1: warning: null character(s) ignored [enabled by default]

b.cpp:13:1: warning: null character(s) ignored [enabled by default]

b.cpp:13:11: warning: null character(s) ignored [enabled by default]

b.cpp:13:13: warning: null character(s) ignored [enabled by default]

b.cpp:13:15: warning: null character(s) ignored [enabled by default]

b.cpp:13:17: warning: null character(s) ignored [enabled by default]

b.cpp:13:21: warning: null character(s) ignored [enabled by default]

b.cpp:13:23: warning: null character(s) ignored [enabled by default]

b.cpp:13:26: warning: null character(s) preserved in literal [enabled by default]

b.cpp:13:49: warning: null character(s) ignored [enabled by default]

b.cpp:13:53: warning: null character(s) ignored [enabled by default]

b.cpp:13:55: warning: null character(s) ignored [enabled by default]

b.cpp:13:59: warning: null character(s) ignored [enabled by default]

b.cpp:13:61: warning: null character(s) ignored [enabled by default]

b.cpp:13:63: warning: null character(s) ignored [enabled by default]

b.cpp:13:65: warning: null character(s) ignored [enabled by default]

b.cpp:13:67: warning: null character(s) ignored [enabled by default]

b.cpp:14:1: warning: null character(s) ignored [enabled by default]

b.cpp:15:1: warning: null character(s) ignored [enabled by default]

b.cpp:15:11: warning: null character(s) ignored [enabled by default]

b.cpp:15:13: warning: null character(s) ignored [enabled by default]

b.cpp:15:15: warning: null character(s) ignored [enabled by default]

b.cpp:15:17: warning: null character(s) ignored [enabled by default]

b.cpp:15:19: warning: null character(s) ignored [enabled by default]

b.cpp:15:21: warning: null character(s) ignored [enabled by default]

b.cpp:15:25: warning: null character(s) ignored [enabled by default]

b.cpp:15:27: warning: null character(s) ignored [enabled by default]

b.cpp:16:1: warning: null character(s) ignored [enabled by default]

b.cpp:17:1: warning: null character(s) ignored [enabled by default]

b.cpp:17:3: warning: null character(s) ignored [enabled by default]

b.cpp:18:1: warning: null character(s) ignored [enabled by default]

b.cpp:1:8: error: 'i' does not name a type

b.cpp:7:2: error: 'i' does not name a type

 

D:\code\cxx>

對UTF-16文件格式沒有沒有研究過，先記錄下來。

順便說下兩個文件的編輯過程，

b.cpp，使用Windows 7自帶的Microsoft PowerShell ISE的腳本編輯器編輯；

c.cpp，使用gvim on windows編輯。