From 2ac1f453cf2f12baeb562b0ff47911e1358d988d Mon Sep 17 00:00:00 2001
From: Anton Hvornum <anton@hvornum.se>
Date: Mon, 14 Jun 2021 18:53:34 +0200
Subject: Added BlockDevice.largest_free_space and BlockDevice.free_space
 (iterator). Also added additional supported filesystems to parted. Apparently
 the online manpages doesn't agree with the local manpages, my previous
 statement that these gets ignored is false so added those in and removed some
 that isn't supported by my local manpages, 'ufs' for instance.

---
 archinstall/lib/disk.py | 38 ++++++++++++++++++++++++++++++++++----
 1 file changed, 34 insertions(+), 4 deletions(-)

(limited to 'archinstall/lib/disk.py')

diff --git a/archinstall/lib/disk.py b/archinstall/lib/disk.py
index aa52c7af..1911110a 100644
--- a/archinstall/lib/disk.py
+++ b/archinstall/lib/disk.py
@@ -15,16 +15,27 @@ MBR = 0b00000010
 
 def valid_fs_type(fstype :str) -> bool:
 	# https://www.gnu.org/software/parted/manual/html_node/mkpart.html
+	# Above link doesn't agree with `man parted` /mkpart documentation:
+	"""
+		fs-type can
+		be  one  of  "btrfs",  "ext2",
+		"ext3",    "ext4",    "fat16",
+		"fat32",    "hfs",     "hfs+",
+		"linux-swap",  "ntfs",  "reis‐
+		erfs", "udf", or "xfs".
+	"""
 
 	return fstype in [
+		"btrfs",
 		"ext2",
+		"ext3", "ext4", # `man parted` allows these
 		"fat16", "fat32",
-		"hfs", "hfs+", "hfsx",
+		"hfs", "hfs+", # "hfsx", not included in `man parted`
 		"linux-swap",
-		"NTFS",
+		"ntfs",
 		"reiserfs",
-		"ufs",
-		"btrfs",
+		"udf", # "ufs", not included in `man parted`
+		"xfs", # `man parted` allows this
 	]
 
 
@@ -335,6 +346,25 @@ class BlockDevice:
 		for device in output['blockdevices']:
 			return device['rota'] is True
 
+	@property
+	def free_space(self):
+		for line in SysCommand(f"parted --machine {self.path} print free"):
+			if 'free' in (free_space := line.decode('UTF-8')):
+				_, start, end, size, *_ = free_space.strip('\r\n;').split(':')
+				yield (start, end, size)
+
+	@property
+	def largest_free_space(self):
+		info = None
+		for space_info in self.free_space:
+			if not info:
+				info = space_info
+			else:
+				# [-1] = size
+				if space_info[-1] > info[-1]:
+					info = space_info
+		return info
+
 	def has_partitions(self):
 		return len(self.partitions)
 
-- 
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