From a11b8764f1be5124b5a81a39809cfeb520f4a96d Mon Sep 17 00:00:00 2001
From: bigfoot547 <bigfoot@figboot.dev>
Date: Tue, 21 Jan 2025 16:36:33 -0600
Subject: strip verbatim prefix \\?\ from paths on windows

without this, java freaks out
(amended to remove an artifact, arguments.txt)
---
 src/util.rs | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

(limited to 'src/util.rs')

diff --git a/src/util.rs b/src/util.rs
index a7c2d5e..7927620 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,11 +1,13 @@
 use std::error::Error;
+use std::ffi::OsStr;
 use std::fmt::{Display, Formatter};
 use std::io::ErrorKind;
-use std::path::{Component, Path, PathBuf};
+use std::path::{Component, Path, PathBuf, Prefix};
 use log::debug;
 use sha1_smol::{Digest, Sha1};
 use tokio::fs::File;
 use tokio::io::AsyncReadExt;
+use crate::util;
 
 #[derive(Debug)]
 pub enum IntegrityError {
@@ -128,3 +130,52 @@ pub fn check_path(name: &str) -> Result<&Path, &'static str> {
 
     Ok(entry_path)
 }
+
+#[cfg(windows)]
+pub fn strip_verbatim(path: &Path) -> &Path {
+    let Some(Component::Prefix(p)) = path.components().next() else {
+        return path;
+    };
+
+    match p.kind() {
+        Prefix::VerbatimDisk(_) =>
+            Path::new(unsafe { OsStr::from_encoded_bytes_unchecked(&path.as_os_str().as_encoded_bytes()[4..]) }),
+        _ => path
+    }
+}
+
+#[cfg(not(windows))]
+pub fn strip_verbatim(path: &Path) -> &Path {
+    path
+}
+
+pub trait AsJavaPath {
+    fn as_java_path(&self) -> &Path;
+}
+
+impl AsJavaPath for Path {
+    fn as_java_path(&self) -> &Path {
+        strip_verbatim(self)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(windows)]
+    fn test_strip_verbatim() {
+        let path = Path::new(r"\\?\C:\Some\Verbatim\Path");
+        match path.components().next().unwrap() {
+            Component::Prefix(p) => assert!(matches!(p.kind(), Prefix::VerbatimDisk(_)), "(TEST BUG) path does not start with verbatim disk"),
+            _ => panic!("(TEST BUG) path does not start with prefix")
+        }
+
+        let path2 = path.as_java_path();
+        match path2.components().next().unwrap() {
+            Component::Prefix(p) => assert!(matches!(p.kind(), Prefix::Disk(_))),
+            _ => panic!("path does not begin with prefix")
+        }
+    }
+}
-- 
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