Linuxls命令ls命令模拟.docx

1、Linuxls命令ls命令模拟Linux-ls命令模拟/ ls.c/ wxd/ create by jneeyou on 15/11/13/ Copyright (c) 2015 wxd. All rights reserved./#include #include #include #include ls_fileHandle.h/*主函数*/int main(int argc, char *argv) int mask = 0; bool ret = false; freopen(.err.dat,wb,stderr); if (!init() return -1; mask = getC

2、mdLineArgs(argc,argv); if (mask = -2)/-help命令 getHelpMenu();/显示帮助 else if (mask = ERROR) printf(参数有误，输入./ls -help查看帮助n); else/其他命令 setMaskArray(mask); ret = getDirInfo(., 0); if (!ret) printf(参数有误，输入./ls -help查看帮助n); freeMem(); system(rm -f .err.dat); return 0;/ ls_fileHandle.h/ wxd/ create by jneey

3、ou on 15/11/13/ Copyright (c) 2015 wxd. All rights reserved./#ifndef _LS_FILE_HANDLE_H_#define _LS_FILE_HANDLE_H_/定义bool型#if !defined(bool) #define bool char #define true 1 #define false 0#endif#ifndef ERROR#define ERROR -1#endif#if defined(_STDC_VERSION_) & (_STDC_VERSION_=199901L) /desc 宏函数,输出文件信息

4、 #define printf_c(fontBgColor,fontColor,format,args.) printf(033fontBgColor;fontColorm format0330m,args)#else /desc 输出文件信息 / 带颜色输出，可设置字体颜色和字体背景颜色 extern int printf_c(char fontBgColor, char fontColor, const char *format, .); #endif/desc 获取命令行参数，返回掩码值extern int getCmdLineArgs(int argc, char *argv);/de

5、sc 设置掩码数组/ret 成功返回true，否则返回falseextern bool setMaskArray(int maskValue);/desc 获得文件信息/ret 成功返回true，否则返回falseextern bool getFileInfo(const char *dirName, const char *fileName, unsigned int index);/desc 获得目录信息/ret 成功返回true，否则返回falseextern bool getDirInfo(const char *dirName, int dirLevel);/desc 获得帮助菜单e

6、xtern void getHelpMenu();/desc 释放内存void freeMem();/desc 初始化bool init();#endif / _LS_FILE_HANDLE_H_/ ls_fileHandle.c/ wxd/ create by jneeyou on 15/11/13/ Copyright (c) 2015 wxd. All rights reserved./#include #include #include #include #include #include #include #include #include #include #include #in

7、clude #ifndef ERROR#define ERROR -1#endif#define OK 0#define NUL_POINTER NULL/定义bool,true,false#ifndef bool#define bool char#define true 1#define false 0#endif/帮助文件名#define HELP_FILE helpInfo.dat#define TMP_FILE .tmp/定义 errno_t 型#define errno_t int/定义文件类型#define block_file b#define direct_file d#def

8、ine spec_char_file c#define fifo_device p#define regular_file -#define link_file l#define socket_file s#define BF block_file /块文件#define DF direct_file /目录文件#define CF spec_char_file /特殊字符文件#define FD fifo_device /FIFO设备#define RF regular_file /普通文件#define LF link_file /符号链接文件#define SF socket_file

9、/scoket文件/文件名最大长度#define MAX_FILE_NAME 512/最多子目录个数#define MAX_SUB_DIR 100 /背景色typedef struct BG_COLOR const char BLACK; /黑 const char DARKRED; /深红 const char GREEN; /绿 const char YELLOW; /黄 const char BLUE; /蓝 const char PURPLE; /紫 const char DARKGREEN; /深绿 const char WHITE; /白 const char DEFAULT; /

10、默认 bgColor;/文字背景色static const bgColor font_bgColor = 40, 41, 42, 43, 44, 45, 46, 47, 0 ;/前景色typedef struct FG_COLOR const char BLACK; /黑 const char RED; /红 const char GREEN ; /绿 const char YELLOW ; /黄 const char BLUE; /蓝 const char PURPLE; /紫 const char DARKGREEN; /深绿 const char WHITE; /白 const char

11、 DEFAULT; /默认 fgColor;/文字颜色static const fgColor font_fgColor = 30, 31, 32, 33, 34, 35, 36, 37, 0 ;/文件信息结构体typedef struct File_Info ino_t ino; /节点号 char type; /类型 char perm10; /权限 nlink_t nlink; /硬链接数 char uname32; /用户名 char gname32; /所属组名 off_t size; /大小 time_t mtime; /最后修改时间 char name32; /文件名 char

12、lname32; /链接的文件名 char nameColor; /名字颜色 char lnameColor; /链接文件颜色 fileInfo;#define MAX_FILE_NUM 100/文件信息结构体数组static fileInfo *m_fileInfo = NULL;/已分配空间static unsigned int ALLOC_MEM_LEN = 0; /全局变量/掩码数组，根据每位元素值是否为1选择获取文件哪些/信息,每位元素对应一个ls命令参数,对应关系如下：/ maskArray0 - -l/ maskArray1 - -a/ maskArray2 - -R/ mask

13、Array3 - -r/ maskArray4 - -d/ maskArray5 - -i/ maskArray6 - -S(大写S)/ maskArray7 - -t/ maskArray8 - -m/ maskArray9 - -1(数字1）/ maskArray10 - -help/ maskArray11 - 无参数/ maskArray12.15 - 保留static unsigned char maskArray16 = 0;/掩码数组有效长度#define VALID_LEN_ARRAY 10/保存外部输入的文件名static char fileName12820 = ;/外部文

14、件数目static int extFileNums = 0;/- 函数实现-/检查参数errno_t checkArgement(char arg) static const char allArgs = l,a,R,r,d,i,S,t,m,1; int len = strlen(allArgs); int i = 0; for (i = 0; i _SizeInBytes) return ERROR; ret= strcpy(_Dst, _Src); if (ret = NULL) return ERROR; return OK;/安全打开errno_t fopen_s(FILE * _Fi

15、le, const char * _Filename, const char * _Mode) *_File = fopen(_Filename, _Mode); if (*_File = NULL) return ERROR; return OK;/安全输出errno_t vsprintf_s(char * _DstBuf, size_t _SizeInBytes, const char * _Format,va_list _ArgList) errno_t ret = vsnprintf(_DstBuf, _SizeInBytes, _Format, _ArgList); return r

16、et;/获取命令行参数，返回掩码值int getCmdLineArgs(int argc, char *argv) int maskValue = 0x0000; int fileCount = 0; int i = 0; for (i = 1; i argc; i+) if (!strcmp(argvi, -help) return -2; else if (argvi0 = -) int len = strlen(argvi); int ret = ERROR; while (-len) ret = checkArgement(argvilen); if (ret = ERROR) ret

17、urn ERROR; maskValue |= (0x0001 = 1) & maskValue) & tmp 0) i-; while (tmp 0) if (tmp & maskValue) maskArrayi- = 1; else maskArrayi- = 0; tmp = 1; return true;#if !(defined(_STDC_VERSION_)& _STDC_VERSION_=199901L)/desc 宏函数,带颜色输出，#format，将format对应的参数字符串化（为变量名时，不是变量中的值，而是变量名）#define PRINT_BY_COLOR(font

18、BgColor,Bold,fontColor,format,argsValue) printf(033%d;%02d;%dm#format0330m,fontBgColor,Bold,fontColor,argsValue) /输出文件信息int printf_c(char fontBgColor, char fontColor, const char *format, .) static char printf_buf1024; va_list args; int n = 0; int bold = 0; va_start(args, format); n = vsprintf_s(prin

19、tf_buf, sizeof(printf_buf), format, args); va_end(args); if ( fontBgColor 47 ) fontBgColor = font_bgColor.DEFAULT; if ( fontColor 37 ) fontBgColor = font_fgColor.DEFAULT; if (fontColor = font_fgColor.BLACK) bold = 0; PRINT_BY_COLOR(fontBgColor, bold, fontColor, %s, printf_buf); return n; #endif/通过ui

20、d获得用户名char * getUnameByUid(uid_t uid) struct passwd *m_pw; static char name20 = ; m_pw = getpwuid(uid); if (m_pw = NULL) return NUL_POINTER; strcpy_s(name, sizeof(name), m_pw-pw_name); return name;/通过gid获得组名char * getGnameByGid(gid_t gid) struct group *m_gr; static char name20 = ; m_gr = getgrgid(gi

21、d); if (m_gr = NULL) return NUL_POINTER; strcpy_s(name, sizeof(name), m_gr-gr_name); return name;/ 获取符号链接链接的文件名bool getFileNameBySLink(char *sLinkName,char *buf, size_t bufSize) int len = 0; len = readlink(sLinkName, buf, bufSize); buflen = 0; if (len bufSize) perror(文件名过长,已被截取.); return true;/获取文件访

22、问权限char * getFileAccePermis(mode_t st_mode) static char perm9 = ; char permValue4 = xwr-; int i = 0, len = 9; for (i = 0; i len; i+) if ( st_mode & (0x1 i) permlen - i - 1 = permValuei % 3; else permlen - i - 1 = permValue3; return perm;/获取文件类型char getFileType(mode_t st_mode) switch (st_mode & S_IFM

23、T) case S_IFBLK: return BF; case S_IFDIR: return DF; case S_IFCHR: return CF; case S_IFIFO: return FD; case S_IFREG: return RF; case S_IFLNK: return LF; case S_IFSOCK: return SF; default: return ERROR; /通过文件类型获得文件名颜色char getFileColorByType(const char *fileName,char type) char cmd3512; char ret = fon

24、t_fgColor.BLACK; if (type = DF) return font_fgColor.BLUE; if (type = LF) return font_fgColor.DARKGREEN; if (access(fileName, X_OK) = 0) return font_fgColor.GREEN; /测试是否为压缩文件 if (!system(mkdir tmp) sprintf(cmd0, tar -xf %s -C tmp, fileName); sprintf(cmd1, tar -xzf %s -C tmp, fileName); sprintf(cmd2, tar