137 lines
3.1 KiB
C++
137 lines
3.1 KiB
C++
/* Path implementation bits.
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*
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* This file is part of libostd. See COPYING.md for futher information.
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*/
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#include <cstdlib>
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#include <dirent.h>
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#include <sys/stat.h>
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#include "ostd/path.hh"
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namespace ostd {
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namespace fs {
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static void dir_read_next(DIR *dh, directory_entry &cur, path const &base) {
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struct dirent d;
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struct dirent *o;
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for (;;) {
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if (readdir_r(dh, &d, &o)) {
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/* FIXME: throw */
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abort();
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}
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if (!o) {
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cur.clear();
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return;
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}
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string_range nm{static_cast<char const *>(o->d_name)};
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if ((nm == ".") || (nm == "..")) {
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continue;
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}
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path p{base};
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p.append(nm);
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cur.assign(std::move(p));
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break;
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}
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}
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/* dir range */
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OSTD_EXPORT void directory_range::open(path const &p) {
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DIR *d = opendir(p.string().data());
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if (!d) {
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/* FIXME: throw */
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abort();
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}
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p_dir = p;
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p_handle = d;
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p_owned = true;
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read_next();
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}
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OSTD_EXPORT void directory_range::close() noexcept {
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if (!p_owned) {
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return;
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}
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closedir(static_cast<DIR *>(p_handle));
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p_owned = false;
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}
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OSTD_EXPORT void directory_range::read_next() {
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dir_read_next(static_cast<DIR *>(p_handle), p_current, p_dir);
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}
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/* recursive dir range */
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OSTD_EXPORT void recursive_directory_range::open(path const &p) {
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DIR *d = opendir(p.string().data());
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if (!d) {
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/* FIXME: throw */
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abort();
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}
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p_dir = p;
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p_stack = &p_handles;
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p_stack->push(d);
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p_owned = true;
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read_next();
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}
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OSTD_EXPORT void recursive_directory_range::close() noexcept {
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if (!p_owned) {
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return;
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}
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while (!p_handles.empty()) {
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closedir(static_cast<DIR *>(p_handles.top()));
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p_handles.pop();
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}
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p_owned = false;
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}
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OSTD_EXPORT void recursive_directory_range::read_next() {
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directory_entry curd;
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if (p_stack->empty()) {
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return;
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}
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dir_read_next(static_cast<DIR *>(p_stack->top()), curd, p_dir);
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struct stat sb;
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/* check if dir and recurse maybe */
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while (!curd.path().empty()) {
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if (stat(curd.path().string().data(), &sb) < 0) {
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/* FIXME: throw */
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abort();
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}
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if (S_ISDIR(sb.st_mode)) {
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/* directory, recurse into it */
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DIR *nd = opendir(curd.path().string().data());
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if (!nd) {
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abort();
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}
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p_dir = curd;
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p_stack->push(nd);
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dir_read_next(nd, curd, p_dir);
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p_current = curd;
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if (curd.path().empty()) {
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break;
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} else {
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return;
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}
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} else {
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/* not a dir, stick with it */
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p_current = curd;
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return;
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}
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}
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/* empty result - done with a dir, pop */
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closedir(static_cast<DIR *>(p_stack->top()));
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p_stack->pop();
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if (!p_stack->empty()) {
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p_current.assign(p_dir);
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p_dir.remove_name();
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} else {
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p_current.clear();
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}
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}
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} /* namesapce fs */
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} /* namespace ostd */
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