/*
* 根据命令行参数和完整路径名显示目标文件
* 参数flag： 命令行参数
* 参数pathname： 包含了文件名的路径名
*/
void display (int flag, char *pathname) {
int i, j;
struct stat buf;
char name[NAME_MAX + 1];
//从路径解析文件名
for (i = 0, j = 0; i < strlen(pathname); i++) {
if (pathname[i] == '/') {
j = 0;
continue;
}
name[j++] = pathname[i];
}
name[j] = '\0';
//用lstat解析链接文件
if (lstat (pathname, &buf) == -1) {
my_err ("stat", errno);
}
switch (flag) {
case PARAM_NONE: //无 -l, -a;
if (name[0] != '.') {
display_single (name);
}
break;
case PARAM_A: //-a;
display_single (name);
break;
case PARAM_L: //-l;
if (name[0] != '.') {
display_attribute (buf, name);
printf (" %-s\n", name);
}
break;
case PARAM_A + PARAM_L: //-a,-l
display_attribute (buf, name);
printf (" %-s\n", name);
break;
}
}
/*
* 根据命令行参数和完整路径名显示目标文件
* 参数flag: 命令行参数
* 参数pathname： 包含了文件的路径名
*/
void display (int flag, char *pathname)
{
int i, j;
struct stat buf;
char name[PATH_MAX + 1];
/* 从路径中解析出文件名 */
for (i = 0, j = 0; i < strlen (pathname); i++) {
if (pathname[i] == '/') {
j = 0;
continue;
}
name[j++] = pathname[i];
}
name[j] = '\0';
/* lstat函数来方便解析链接文件,获取文件的状态信息 */
if (lstat (pathname, &buf) == -1) {
my_err ("lstat", errno);
}
/*
* 参数pathname指定文件的路径。
* 参数buf表示存储stat结构的缓冲区的地址。
* stat结构用于存储文件的状态信息。
*/
switch (flag) {
case PARAM_NONE: //没有-l和-a选项
if (name[0] != '.')
display_single (name);
break;
case PARAM_A:
display_single (name);
break;
case PARAM_L:
//printf ("total %d\n", count);
if (name[0] != '.') {
display_attribute (buf, name);
printf (" %-s\n", name);
}
break;
case PARAM_A + PARAM_L:
//printf ("total %d\n", count);
display_attribute (buf, name);
printf (" %-s\n", name);
break;
default:
break;
}
}
void display(int flag,char* pathname)
{
int i,j;
struct stat buf;
char name[NAME_MAX+1];
//extract the file name from pathname;
for(i=0,j=0;i<strlen(pathname);i++)
{
if(pathname[i]=='/')
{
j=0;
continue;
}
name[j++]=pathname[i];
}
name[j]='\0';
if(lstat(pathname,&buf)==-1)
{
my_err("lstat",errno,__LINE__);
}
switch(flag)
{
case PARAM_NONE://no any argument
if(name[0]!='.')
{
display_single(name);
}
break;
case PARAM_L://-l
if(name[0]!='.')
{
display_attribute(buf,name);
printf(" %-s\n",name);
}
break;
case PARAM_A://-a
//the first character of hidden files is '.'(dot)
display_single(name);
break;
case PARAM_A+PARAM_L://-a -l
display_attribute(buf,name);
printf(" %-s\n",name);
break;
default:
break;
}
}
void display_R(int flag,char *pathname)
{
int i,j;
struct stat buf;
char name[NAME_MAX + 1];
for(i=0,j=0;i<strlen(pathname);i++)
{
if(pathname[i] == '/')
{
j = 0;
}
else
name[j++] = pathname[i];
}
name[j] = 0;
if(lstat(pathname,&buf) == -1)
{
my_error("stat",__LINE__);
}
if(flag == PARAM_NONE)
{
if(name[0] != '.')//不显示隐藏文件
{
display_single(name);
}
}
else if(flag == PARAM_A)
{
display_single(name);
}
else if(flag == PARAM_L)
{
if(name[0] != '.')
{
display_attribute(buf,name);
printf(" %-s\n",name);
}
}
else if(flag == (PARAM_A | PARAM_L))
{
display_attribute(buf,name);
printf(" %-s\n",name);
}
}
void display(int flag, char pathname[], int sT_INO) //是不是-i,name是文件名
{
int i,j;
struct stat buf;
char name[NAME_MAX+1];
/*从路径中解析出文件*/
for(i=0,j=0; i<strlen(pathname); i++){
if(pathname[i]=='/'){
j=0;
continue;
}
name[j++]=pathname[i];
}
name[j]='\0';
/*用lstat而不是stat以方便解析链接文件*/
if( lstat(pathname, &buf) ==-1 ){
my_err("stat",__LINE__);
}
switch(flag){
case PARAM_NONE: //没有-l和-a选项
if(name[0] != '.'){
display_single(name,sT_INO,buf);
}
break;
case PARAM_A: //-a显示包括隐藏文件在内的所有文件
display_single(name, sT_INO, buf);
break;
case PARAM_L: //-l每个文件单独占一行，显示文件详细属性信息
if(name[0] != '.'){
display_attribute(buf,name);
printf(" %-s\n",name);
}
break;
case PARAM_A+PARAM_L: //同时有-a和-l的选项
display_attribute(buf,name);
printf(" %-s\n",name);
break;
default:
break;
}
}
//信息输出
void output(struct stat *buf, char *path)
{
if (opt.a == 1) {
if (opt.l == 1) {
display_attribute(buf, path);
} else {
display_single(path);
}
} else {
if (path[0] != '.') {
if (opt.l == 1) {
display_attribute(buf, path);
} else {
display_single(path);
}
}
}
}
void display(int flag, char *pathname)
{
int i, j;
struct stat buf;
char name[NAME_MAX+ 1];
for(i=0, j=0; i<strlen(pathname); i++)
{
if(pathname[i] == '/')
{
j = 0;
continue;
}
name[j++] = pathname[i];
}
name[j] = '\0';
if(lstat(pathname, &buf) == -1) {
my_err("stat", __LINE__);
}
switch(flag) {
case PARAM_NONE:
if(name[0] != '.') {
display_single(name);
}
break;
case PARAM_A:
display_single(name);
break;
case PARAM_L:
if(name[0] != '.') {
display_attribute(buf/*, name*/);
printf(" %-s\n", name);
}
break;
case PARAM_A + PARAM_L:
display_attribute(buf/*, name*/);
printf(" %-s\n", name);
break;
default:
break;
}
}
int main(int argc, char * argv[])
{
int i = 0,n;
char a[6][20] = {"0","0","0","0","0","0"}; //存放命令，解析命令
char filename[N][100];
// struct stat buf;
char name[100];
char name1[100];
DIR *dir;
struct dirent *ptr;
int j = 0;
int k = 0;
int l = 0;
getcwd(name,100);
if((dir = opendir(name)) == NULL)
{
printf("error\n");
exit(1);
}
while((ptr = readdir(dir)) != NULL)
{
strcpy(filename[l], ptr->d_name);
//printf("filename[%d]: %s",l,filename[l]);
l++;
}
//sort(filename);
for(i = 1; i < argc; i++)
{
strcpy(a[i],argv[i]);
}
if(strcmp(a[1],"ls") == 0 && a[2][0] == '0')
{
n = my_readir(name,filename);
}
else if(strcmp(a[2],"-l") == 0 && a[3][0] == '0')
{
printf("ls -l\n");
for(i = 0; i < l;i++)
{
if(filename[i][0] != '.')
display_attribute(filename[i]);
}
}
else if(strcmp(a[2],"-a") == 0 && a[3][0] == '0')
{
printf("ls -a\n");
n =my_readirt(name,filename);
}
else if((strcmp(a[2],"-a") == 0 && strcmp(a[3],"-l") == 0 && a[4][0] == '0') ||
(strcmp(a[2],"-l") == 0 && strcmp(a[3],"-a") == 0 && a[4][0] == '0') ||
(strcmp(a[2],"-al") == 0 && a[3][0] == '0') ||
(strcmp(a[2],"-la") == 0 && a[3][0] == '0'))
{
printf("ls -al -la\n");
for(i = 0; i < l; i++)
display_attribute(filename[i]);
}
else if(strcmp(a[2],"-R") == 0 && a[3][0] == '0')
{
printf("ls -R\n");
getcwd(name1,100);
my_ls_r(name1);
}
else if(a[2][0] != '0')
{
printf("ls <filename>\n");
}
else if(strcmp(a[2],"-i") == 0 && a[3][0] == '0')
{
n = my_readirt(name,filename);
}
else
{
printf("error1\n");
}
return 0;
}
