gptman: change the way of how args are passed to subcommands

1 files changed, 28 insertions, 2 deletions

diff --git a/create/create.ha b/create/create.ha
index 2c08eec..b7dc0f7 100644
--- a/create/create.ha
+++ b/create/create.ha
@@ -1,12 +1,38 @@
 use fmt;
+use fs;
+use getopt;
 use io;
+use os;
+use strconv;
 
 use gpt;
+use volume;
 
-export fn create(vol: io::file, args: []str) void = {
+export fn create(vol: str, args: []str) void = {
 	// XXX this is a stub
 
-	const vol = gpt::create(vol, 1000);
+	const cmd = getopt::parse(args,
+		"create a volume",
+		('f', "file", "specify another partition file to fit"),
+		('l', "length", "specify another length margin")
+	);
+	defer getopt::finish(&cmd);
+	
+	let length = 0z;
+
+	for (let i = 0z; i < len(cmd.opts); i += 1) {
+		const opt = cmd.opts[i];
+		switch (opt.0) {
+		case 'l' =>
+			length += (strconv::stoi(opt.1)! / 512 + 1): size;
+		case 'f' =>
+			const stat = os::stat(opt.1)!;
+			length += stat.sz / 512 + 1;
+		};
+	};
+
+	const vol = volume::mkvol(vol);
+	const vol = gpt::create(vol, length);
 	defer {
 		gpt::chksums(vol);
 		gpt::commit(vol)!;