io: add lots of directory and path manipulation functions

io/sys/darwin/posix.c

@@ -0,0 +1,58 @@
+#include <blue/core/status.h>
+#include <blue/io/file.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+enum b_status b_status_from_errno(int error, enum b_status default_value)
+{
+	switch (error) {
+	case 0:
+		return B_SUCCESS;
+	case ENOENT:
+		return B_ERR_NO_ENTRY;
+	case EEXIST:
+		return B_ERR_NAME_EXISTS;
+	case ENOMEM:
+		return B_ERR_NO_MEMORY;
+	case EINVAL:
+		return B_ERR_INVALID_ARGUMENT;
+	case EIO:
+		return B_ERR_IO_FAILURE;
+	case EISDIR:
+		return B_ERR_IS_DIRECTORY;
+	case ENOTDIR:
+		return B_ERR_NOT_DIRECTORY;
+	case ENOTSUP:
+	case ENOSYS:
+		return B_ERR_NOT_SUPPORTED;
+	default:
+		return default_value;
+	}
+}
+
+enum b_status b_file_info_from_stat(const struct stat *st, struct b_file_info *out)
+{
+	out->length = st->st_size;
+
+	if (S_ISREG(st->st_mode)) {
+		out->attrib |= B_FILE_ATTRIB_NORMAL;
+	}
+
+	if (S_ISDIR(st->st_mode)) {
+		out->attrib |= B_FILE_ATTRIB_DIRECTORY;
+	}
+
+	if (S_ISBLK(st->st_mode)) {
+		out->attrib |= B_FILE_ATTRIB_BLOCK_DEVICE;
+	}
+
+	if (S_ISCHR(st->st_mode)) {
+		out->attrib |= B_FILE_ATTRIB_CHAR_DEVICE;
+	}
+
+	if (S_ISLNK(st->st_mode)) {
+		out->attrib |= B_FILE_ATTRIB_SYMLINK;
+	}
+
+	return B_SUCCESS;
+}