// traverse a directory tree applying a function when a file is found
void process(char *root)
{
int numOfFiles = 0;
que_t nameq;
char dname[MAXLENGTH];
char cname[MAXLENGTH];
char prefix[MAXLENGTH];
struct dirent *dp;
DIR *dirp;
initq(&nameq);
enqueue(root,&nameq);
while (true != queue_empty(nameq)) {
peek_front(dname,nameq);
dequeue(&nameq);
dirp = opendir(dname);
if (dirp != NULL) { // it is a directory
printf("directory : %s\n",dname);
strncpy(prefix, dname, MAXLENGTH);
strncat(prefix,"/", MAXLENGTH);
for (dp = readdir(dirp); NULL != dp; dp = readdir(dirp)) {
if ((strcmp(dp->d_name,"..") != 0) &&
(strcmp(dp->d_name,".") != 0)) {
// prevent from infinite loop
strncpy(cname, prefix, MAXLENGTH);
// concatenate the prefix
strncat(cname, dp->d_name, MAXLENGTH);
enqueue(cname,&nameq);
}
}
closedir (dirp);
} else {
// test if it is a regular file and not a device or link -- TO-DO
// if this is a regular file, then process it -- TO-DO
printf(" processing file: %s\n", dname);
numOfFiles++;
}
} // while
printf(" a total of %d files were counted\n",numOfFiles);
}
// traverse a directory tree applying a function when a file is found
void process(char *root)
{
int numOfFiles = 0;
que_t nameq;
char dname[MAXLENGTH];
char cname[MAXLENGTH];
char prefix[MAXLENGTH];
struct dirent *dp;
DIR *dirp;
struct stat file_info;
unsigned int fd;
initq(&nameq);
enqueue(root,&nameq);
while (true != queue_empty(nameq)) {
peek_front(dname,nameq);
dequeue(&nameq);
dirp = opendir(dname);
if (dirp != NULL) { // it is a directory
printf("directory : %s\n",dname);
strncpy(prefix, dname, MAXLENGTH);
strncat(prefix,"/", MAXLENGTH);
for (dp = readdir(dirp); NULL != dp; dp = readdir(dirp)) {
if ((strcmp(dp->d_name,"..") != 0) &&
(strcmp(dp->d_name,".") != 0)) {
// prevent from infinite loop
strncpy(cname, prefix, MAXLENGTH);
// concatenate the prefix
strncat(cname, dp->d_name, MAXLENGTH);
enqueue(cname,&nameq);
}
}
closedir (dirp);
} else {
// test if it is a regular file and not a device or link -- TO-DO
fd = open(dname, O_RDONLY);
if (-1 == fd) {
perror("Failed to open read only file - ");
exit(-1);
}
if(fstat(fd, &file_info)==0){
// if this is a regular file, then process it -- TO-DO
if(S_ISREG(file_info.st_mode)){
printf(" processing file: %s\n", dname);
numOfFiles++;
}
}
close(fd);
}
} // while
printf(" a total of %d files were counted\n",numOfFiles);
}
int queue_peek(node* list) {
return peek_front(list);
}
