io: implement stat'ing paths, files, and directory contents

io/sys/darwin/directory.c

@@ -1,9 +1,12 @@
+#include "status.h"
+
 #include <blue/io/directory.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <fts.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 struct b_directory {
@@ -27,38 +30,38 @@ static struct b_object_type directory_type = {
 	.t_release = directory_release,
 };
 
-static enum b_status status_from_errno(int error, enum b_status default_value)
-{
-	switch (error) {
-	case ENOENT:
-		return B_ERR_NO_ENTRY;
-	default:
-		return default_value;
-	}
-}
-
 enum b_status b_directory_open(
 	struct b_directory *root, const struct b_path *path,
 	struct b_directory **out)
 {
 	enum b_status status = B_SUCCESS;
 
+	struct b_path *cwd = NULL;
+
+	if (!root) {
+		cwd = b_path_create_cwd();
+	}
+
 	const b_path *parts[] = {
-		root ? root->abs_path : NULL,
+		root ? root->abs_path : cwd,
 		path,
 	};
 
-	b_path *new_path = b_path_join(parts, sizeof parts / sizeof *parts);
+	b_path *new_path = b_path_join(parts, sizeof parts / sizeof parts[0]);
 	if (!new_path) {
 		return B_ERR_NO_MEMORY;
 	}
 
+	if (cwd) {
+		b_path_release(cwd);
+	}
+
 	int root_fd = root ? root->fd : AT_FDCWD;
 
 	int fd = openat(root_fd, b_path_ptr(path), O_DIRECTORY);
 
 	if (fd == -1) {
-		status = status_from_errno(errno, B_ERR_IO_FAILURE);
+		status = b_status_from_errno(errno, B_ERR_IO_FAILURE);
 
 		b_path_release(new_path);
 
@@ -81,6 +84,69 @@ static int ftsent_compare(const FTSENT **one, const FTSENT **two)
 	return (strcmp((*one)->fts_name, (*two)->fts_name));
 }
 
+static void update_iterator_data(struct b_directory_iterator *it)
+{
+	struct z__b_directory_iterator *it_data = it->_z;
+
+	if (it->filepath) {
+		b_path_release((struct b_path *)it->filepath);
+		it->filepath = NULL;
+	}
+
+	FTSENT *ent = it_data->ent;
+
+	struct b_path *path = b_path_create_from_cstr(
+		ent->fts_path + b_path_length(it->root->abs_path) + 1);
+
+	it->filename = ent->fts_name;
+	it->filepath = path;
+
+	memset(&it->info, 0x0, sizeof it->info);
+
+	it->info.length = ent->fts_statp->st_size;
+
+	if (S_ISREG(ent->fts_statp->st_flags)) {
+		it->info.attrib |= B_FILE_ATTRIB_NORMAL;
+	}
+
+	if (S_ISDIR(ent->fts_statp->st_flags)) {
+		it->info.attrib |= B_FILE_ATTRIB_DIRECTORY;
+	}
+
+	if (S_ISBLK(ent->fts_statp->st_flags)) {
+		it->info.attrib |= B_FILE_ATTRIB_BLOCK_DEVICE;
+	}
+
+	if (S_ISCHR(ent->fts_statp->st_flags)) {
+		it->info.attrib |= B_FILE_ATTRIB_CHAR_DEVICE;
+	}
+
+	if (S_ISLNK(ent->fts_statp->st_flags)) {
+		it->info.attrib |= B_FILE_ATTRIB_SYMLINK;
+	}
+}
+
+static void cleanup_iterator(struct b_directory_iterator *it)
+{
+	if (it->filepath) {
+		b_path_release((struct b_path *)it->filepath);
+		it->filepath = NULL;
+	}
+
+	struct z__b_directory_iterator *it_data = it->_z;
+	memset(it, 0x0, sizeof *it);
+
+	if (!it_data) {
+		return;
+	}
+
+	if (it_data->fts) {
+		fts_close(it_data->fts);
+	}
+
+	free(it_data);
+}
+
 int b_directory_iterator_begin(
 	struct b_directory *directory, struct b_directory_iterator *it,
 	enum b_directory_iterator_flags flags)
@@ -89,6 +155,11 @@ int b_directory_iterator_begin(
 	it->root = directory;
 
 	struct z__b_directory_iterator *it_data = malloc(sizeof *it_data);
+
+	if (!it_data) {
+		return -1;
+	}
+
 	memset(it_data, 0x0, sizeof *it_data);
 
 	it->_z = it_data;
@@ -103,16 +174,13 @@ int b_directory_iterator_begin(
 	it_data->fts
 		= fts_open((char *const *)path_list, fts_flags, ftsent_compare);
 
-	if (!it_data) {
-		return -1;
-	}
-
 	bool done = false;
 
 	while (!done) {
 		it_data->ent = fts_read(it_data->fts);
 
 		if (!it_data->ent) {
+			cleanup_iterator(it);
 			return -1;
 		}
 
@@ -145,9 +213,7 @@ int b_directory_iterator_begin(
 		}
 	}
 
-	it->filename = it_data->ent->fts_name;
-	it->filepath
-		= it_data->ent->fts_path + b_path_length(it->root->abs_path) + 1;
+	update_iterator_data(it);
 	return 0;
 }
 
@@ -164,6 +230,7 @@ bool b_directory_iterator_next(struct b_directory_iterator *it)
 		it_data->ent = fts_read(it_data->fts);
 
 		if (!it_data->ent) {
+			cleanup_iterator(it);
 			return false;
 		}
 
@@ -195,9 +262,7 @@ bool b_directory_iterator_next(struct b_directory_iterator *it)
 		}
 	}
 
-	it->filename = it_data->ent->fts_name;
-	it->filepath
-		= it_data->ent->fts_path + b_path_length(it->root->abs_path) + 1;
+	update_iterator_data(it);
 	return true;
 }