void copy_dir_to_dir(char* from, char* to){
DIR *dir;
if((dir=opendir(from))==NULL)
show_errno();
struct dirent *dp;
char next_from[FNAME] = {'\0'};
char next_to[FNAME] = {'\0'};
struct stat s;
for(dp=readdir(dir);dp!=NULL;dp=readdir(dir)){
sprintf(next_from,"%s/%s",from,dp->d_name);
if(dp->d_type==DT_REG){
copy_file_to_dir(next_from,to);
}
if(dp->d_type==DT_DIR){
if(strncmp(dp->d_name,"..",2)==0 || strncmp(dp->d_name,".",1)==0)
continue;
sprintf(next_to,"%s/%s",to,dp->d_name);
if(stat(next_from,&s) == 0){
mkdir(next_to,s.st_mode);
}else{
show_errno();
}
copy_dir_to_dir(next_from,next_to);
}
}
}
/**
* copy src to dst (recursively)
* @param src and dst are file or dir
* @return -1 if failed
*/
int copy_file(const char *src, const char *dst)
{
struct stat st;
if (stat(dst, &st) == 0 && S_ISDIR(st.st_mode)) {
if (stat(src, &st) < 0)
return -1;
if (S_ISDIR(st.st_mode))
return copy_dir_to_dir(src, dst);
else if (S_ISREG(st.st_mode))
return copy_file_to_dir(src, dst);
return -1;
}
else if (stat(src, &st) == 0 && S_ISDIR(st.st_mode))
return copy_dir_to_dir(src, dst);
return copy_file_to_file(src, dst);
}
void copy_from_backup(char* date){
char to_path[PNAME];
get_backup_dir(date,to_path);
struct stat s;
if( stat(to_path,&s) == 0 ){
if( !S_ISDIR(s.st_mode) )
show_errno();
}else{
printf("no backups of the date %s.\n",date);
exit(-1);
}
copy_dir_to_dir(to_path,".");
}
void copy_to_dir(int argc, char* argv[], char* backup){
int i;
char from[FNAME] = {'\0'};
struct stat s;
for(i=1;i<argc-1;i++){
sprintf(from,"%s",argv[i]);
if( stat(argv[i],&s) == 0 ){
if( S_ISREG(s.st_mode) )
copy_file_to_dir(argv[i],backup);
if( S_ISDIR(s.st_mode) )
copy_dir_to_dir(argv[i],backup);
}else{
show_errno();
}
}
}