void FileSys::add_dir(Dir& dvec)
{
// push work dir
char pwd_buffer[256];
getcwd(pwd_buffer, sizeof(pwd_buffer));
// go into directory
char cwd_buffer[256];
getcwd(cwd_buffer, sizeof(cwd_buffer));
strcat(cwd_buffer, "/");
strcat(cwd_buffer, dvec.name.c_str());
//printf("*** Entering %s...\n", cwd_buffer);
chdir(cwd_buffer);
auto* dir = opendir(cwd_buffer);
if (dir == nullptr)
{
printf("Could not open directory:\n-> %s\n", cwd_buffer);
return;
}
struct dirent* ent;
while ((ent = readdir(dir)) != nullptr)
{
std::string name(ent->d_name);
if (name == ".." || name == ".") continue;
if (ent->d_type == DT_DIR) {
auto& d = dvec.add_dir(ent->d_name);
add_dir(d);
}
else {
dvec.add_file(ent->d_name);
}
}
// pop work dir
chdir(pwd_buffer);
}
void FileSys::add_dir(Dir& dvec)
{
// push work dir
char pwd_buffer[256];
getcwd(pwd_buffer, sizeof(pwd_buffer));
// go into directory
char cwd_buffer[256];
getcwd(cwd_buffer, sizeof(cwd_buffer));
strcat(cwd_buffer, "/");
strcat(cwd_buffer, dvec.name.c_str());
int res = chdir(cwd_buffer);
// throw immediately when unable to read directory
if (res < 0) {
fprintf(stderr, "Unable to enter directory %s: %s\n", cwd_buffer, strerror(errno));
throw std::runtime_error("Unable to enter directory " + std::string(cwd_buffer));
}
auto* dir = opendir(cwd_buffer);
// throw immediately when unable to open directory
if (dir == nullptr) {
fprintf(stderr, "Unable to open directory %s: %s\n", cwd_buffer, strerror(errno));
throw std::runtime_error("Unable to open directory " + std::string(cwd_buffer));
}
std::vector<std::string> sub_dirs;
std::vector<std::string> sub_files;
struct dirent* ent;
while ((ent = readdir(dir)) != nullptr)
{
std::string name(ent->d_name);
if (name == ".." || name == ".") continue;
struct stat buf;
int res = lstat(ent->d_name, &buf);
if (res < 0) {
fprintf(stderr, "Stat failed on %s with error %s\n",
ent->d_name, strerror(errno));
continue;
}
if (S_ISDIR(buf.st_mode)) {
sub_dirs.push_back(std::move(name));
}
else if (S_ISREG(buf.st_mode)) {
sub_files.push_back(std::move(name));
}
else {
fprintf(stderr, "Encountered unknown entry %s\n", ent->d_name);
}
}
// close directory before adding more folders and files
res = closedir(dir);
if (res < 0) {
fprintf(stderr, "Unable to close directory: %s\n", strerror(errno));
throw std::runtime_error("diskbuilder: Failed to close directory");
}
// add sub directories
for (const auto& dirname : sub_dirs) {
auto& d = dvec.add_dir(dirname.c_str());
add_dir(d);
}
// add files in current directory
for (const auto& filename : sub_files)
{
try {
dvec.add_file(filename.c_str());
} catch (std::exception& e) {
fprintf(stderr, "%s\n", e.what());
}
}
// pop work dir
res = chdir(pwd_buffer);
if (res < 0) {
fprintf(stderr, "Unable to return to parent directory %s: %s\n", pwd_buffer, strerror(errno));
throw std::runtime_error("diskbuilder: Failed to return back to parent directory");
}
}