From 2f919bda91d0b0accfdf7367be207eabf64141af Mon Sep 17 00:00:00 2001
From: Adam Demasi <adam@hbang.com.au>
Date: Thu, 6 Aug 2020 13:25:24 +0930
Subject: [PATCH] =?UTF-8?q?[common]=20Integrate=20Procursus=E2=80=99s=20fu?=
 =?UTF-8?q?ll=20localization=20support=20(yay!)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Common/Controllers/SubProcess.swift | 22 +++++++++++++++++++++-
 control                             |  2 +-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/Common/Controllers/SubProcess.swift b/Common/Controllers/SubProcess.swift
index 6b6621e..f527eee 100644
--- a/Common/Controllers/SubProcess.swift
+++ b/Common/Controllers/SubProcess.swift
@@ -70,6 +70,7 @@ class SubProcess: NSObject {
 		windowSize.ws_row = SubProcess.defaultHeight
 
 		fileDescriptor = Int32()
+		let localeCode = self.localeCode
 		let pid = forkpty(&fileDescriptor!, nil, nil, &windowSize)
 
 		switch pid {
@@ -89,7 +90,7 @@ class SubProcess: NSObject {
 
 				let env = ([
 					"TERM=xterm-color",
-					"LANG=en_US.UTF-8",
+					"LANG=\(localeCode)",
 					"TERM_PROGRAM=NewTerm",
 					"LC_TERMINAL=NewTerm"
 				] as NSArray).cStringArray()!
@@ -176,6 +177,25 @@ class SubProcess: NSObject {
 		fileHandle!.write(data)
 	}
 
+	private var localeCode: String {
+		// Try and find a locale suitable for the user. Use en_US.UTF-8 as fallback.
+		// TODO: There has to be a better way to get a gettext locale out of the Apple locale. For
+		// instance, a phone set to Simplified Chinese but a region of Australia will only have the
+		// language zh_AU… which isn’t a thing. But gettext only has languages in country pairs, no
+		// safe generic fallbacks exist, like zh-Hans in this case.
+		for language in Locale.preferredLanguages {
+			let locale = Locale(identifier: language)
+			if let languageCode = locale.languageCode, let regionCode = locale.regionCode {
+				let identifier = "\(languageCode)_\(regionCode).UTF-8"
+				let url = URL(fileURLWithPath: "/usr/share/locale").appendingPathComponent(identifier)
+				if (try? url.checkResourceIsReachable()) == true {
+					return identifier
+				}
+			}
+		}
+		return "en_US.UTF-8"
+	}
+
 	deinit {
 		if childPID != nil {
 			NSLog("warning: illegal state — SubProcess deallocated while still running")
diff --git a/control b/control
index 6a54c12..b3e4a5d 100644
--- a/control
+++ b/control
@@ -1,6 +1,6 @@
 Package: ws.hbang.newterm2
 Name: NewTerm (iOS 10 – 13)
-Depends: firmware (>= 10.0), firmware (>= 12.2) | org.swift.libswift, firmware (>= 13.0) | ws.hbang.newtermfonts, ws.hbang.common (>= 1.14), bash, coreutils, ncurses, system-cmds, com.linusyang.localeutf8
+Depends: firmware (>= 10.0), firmware (>= 12.2) | org.swift.libswift, firmware (>= 13.0) | ws.hbang.newtermfonts, ws.hbang.common (>= 1.14), bash, coreutils, ncurses, system-cmds, gettext-localizations | com.linusyang.localeutf8
 Conflicts: ws.hbang.newterm, com.lint.ntarrows
 Replaces: ws.hbang.newterm, com.lint.ntarrows
 Version: 2.4