From d9eed9f0a7f7279b70d13109f4d3a665481149ed Mon Sep 17 00:00:00 2001
From: Anthony Perkins <anthony@acperkins.com>
Date: Mon, 17 Apr 2023 13:04:07 +0100
Subject: [PATCH] Add PowerShell UTF-16 diff

---
 roles/home-cli/files/gitwindows    | 2 ++
 roles/home-cli/files/utf16diff.cmd | 3 +++
 roles/home-cli/files/utf16diff.ps1 | 3 +++
 3 files changed, 8 insertions(+)
 create mode 100644 roles/home-cli/files/utf16diff.cmd
 create mode 100644 roles/home-cli/files/utf16diff.ps1

diff --git a/roles/home-cli/files/gitwindows b/roles/home-cli/files/gitwindows
index 47320ac..63e0631 100644
--- a/roles/home-cli/files/gitwindows
+++ b/roles/home-cli/files/gitwindows
@@ -9,3 +9,5 @@
 	helper = manager
 [credential "https://dev.azure.com"]
 	useHttpPath = true
+[diff "utf16diff"]
+	textconv = "C:/Users/anthony.perkins/data/workstation/roles/home-cli/files/utf16diff.cmd"
diff --git a/roles/home-cli/files/utf16diff.cmd b/roles/home-cli/files/utf16diff.cmd
new file mode 100644
index 0000000..a90dfa9
--- /dev/null
+++ b/roles/home-cli/files/utf16diff.cmd
@@ -0,0 +1,3 @@
+@ECHO OFF
+REM Add "*.ps1 diff=utf16diff" to ~/.config/git/attributes to use this.
+powershell.exe -Command "%~dp0\utf16diff.ps1" "%1"
diff --git a/roles/home-cli/files/utf16diff.ps1 b/roles/home-cli/files/utf16diff.ps1
new file mode 100644
index 0000000..e56f0f6
--- /dev/null
+++ b/roles/home-cli/files/utf16diff.ps1
@@ -0,0 +1,3 @@
+[string]$file = $args[0]
+[string]$encoding = $(&"C:\Program Files\Git\usr\bin\file.exe" -b --mime-encoding $file)
+&"C:\Program Files\Git\usr\bin\iconv.exe" -c -f $encoding -t UTF-8 $file