Add `Error` to `os2.set_env`

core/os/os2/env.odin

@@ -22,8 +22,8 @@ lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string,
 }
 
 // set_env sets the value of the environment variable named by the key
-// Returns true on success, false on failure
-set_env :: proc(key, value: string) -> bool {
+// Returns Error on failure
+set_env :: proc(key, value: string) -> Error {
 	return _set_env(key, value)
 }
 

core/os/os2/env_linux.odin

@@ -54,7 +54,7 @@ _lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string
 	return
 }
 
-_set_env :: proc(key, v_new: string) -> bool {
+_set_env :: proc(key, v_new: string) -> Error {
 	if _org_env_begin == 0 {
 		_build_env()
 	}
@@ -63,7 +63,7 @@ _set_env :: proc(key, v_new: string) -> bool {
 	kv_size := len(key) + len(v_new) + 2
 	if v_curr, idx := _lookup(key); idx != NOT_FOUND {
 		if v_curr == v_new {
-			return true
+			return nil
 		}
 		sync.mutex_lock(&_env_mutex)
 		defer sync.mutex_unlock(&_env_mutex)
@@ -78,7 +78,7 @@ _set_env :: proc(key, v_new: string) -> bool {
 			if len(v_new) > len(v_curr) {
 				k_addr = ([^]u8)(runtime.heap_resize(k_addr, kv_size))
 				if k_addr == nil {
-					return false
+					return .Out_Of_Memory
 				}
 				v_addr = &k_addr[len(key) + 1]
 			}
@@ -86,13 +86,13 @@ _set_env :: proc(key, v_new: string) -> bool {
 			v_addr[len(v_new)] = 0
 
 			append(&_env, string(k_addr[:kv_size]))
-			return true
+			return nil
 		}
 	}
 
 	k_addr := ([^]u8)(runtime.heap_alloc(kv_size))
 	if k_addr == nil {
-		return false
+		return .Out_Of_Memory
 	}
 	intrinsics.mem_copy_non_overlapping(k_addr, raw_data(key), len(key))
 	k_addr[len(key)] = '='
@@ -104,7 +104,7 @@ _set_env :: proc(key, v_new: string) -> bool {
 	sync.mutex_lock(&_env_mutex)
 	append(&_env, string(k_addr[:kv_size - 1]))
 	sync.mutex_unlock(&_env_mutex)
-	return true
+	return nil
 }
 
 _unset_env :: proc(key: string) -> bool {

core/os/os2/env_posix.odin

@@ -26,13 +26,15 @@ _lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string
 	return
 }
 
-_set_env :: proc(key, value: string) -> (ok: bool) {
+_set_env :: proc(key, value: string) -> (err: Error) {
 	TEMP_ALLOCATOR_GUARD()
 
-	ckey := strings.clone_to_cstring(key, temp_allocator())
-	cval := strings.clone_to_cstring(key, temp_allocator())
+	ckey := strings.clone_to_cstring(key, temp_allocator()) or_return
+	cval := strings.clone_to_cstring(key, temp_allocator()) or_return
 
-	ok = posix.setenv(ckey, cval, true) == .OK
+	if posix.setenv(ckey, cval, true) != nil {
+		err = _get_platform_error_from_errno()
+	}
 	return
 }
 

core/os/os2/env_wasi.odin

@@ -80,46 +80,30 @@ _lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string
 }
 
 @(require_results)
-_set_env :: proc(key, value: string) -> bool {
-	if err := build_env(); err != nil {
-		return false
-	}
+_set_env :: proc(key, value: string) -> (err: Error) {
+	build_env() or_return
 
 	sync.guard(&g_env_mutex)
 
-	key_ptr, value_ptr, just_inserted, err := map_entry(&g_env, key)
-	if err != nil {
-		return false
+	defer if err != nil {
+		delete_key(&g_env, key)
 	}
 
-	alloc_err: runtime.Allocator_Error
+	key_ptr, value_ptr, just_inserted := map_entry(&g_env, key) or_return
 
 	if just_inserted {
-		key_ptr^, alloc_err = clone_string(key, file_allocator())
-		if alloc_err != nil {
-			delete_key(&g_env, key)
-			return false
-		}
-
-		value_ptr^, alloc_err = clone_string(value, file_allocator())
-		if alloc_err != nil {
-			delete_key(&g_env, key)
+		key_ptr^ = clone_string(key, file_allocator()) or_return
+		defer if err != nil {
 			delete(key_ptr^, file_allocator())
-			return false
 		}
-
-		return true
+		value_ptr^ = clone_string(value, file_allocator()) or_return
+		return
 	}
 
 	delete_string_if_not_original(value_ptr^)
 
-	value_ptr^, alloc_err = clone_string(value, file_allocator())
-	if alloc_err != nil {
-		delete_key(&g_env, key)
-		return false
-	}
-
-	return true
+	value_ptr^ = clone_string(value, file_allocator()) or_return
+	return
 }
 
 @(require_results)

core/os/os2/env_windows.odin

@@ -36,12 +36,15 @@ _lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string
 	return
 }
 
-_set_env :: proc(key, value: string) -> bool {
+_set_env :: proc(key, value: string) -> Error {
 	TEMP_ALLOCATOR_GUARD()
-	k, _ := win32_utf8_to_wstring(key,   temp_allocator())
-	v, _ := win32_utf8_to_wstring(value, temp_allocator())
+	k := win32_utf8_to_wstring(key,   temp_allocator()) or_return
+	v := win32_utf8_to_wstring(value, temp_allocator()) or_return
 
-	return bool(win32.SetEnvironmentVariableW(k, v))
+	if !win32.SetEnvironmentVariableW(k, v) {
+		return _get_platform_error()
+	}
+	return nil
 }
 
 _unset_env :: proc(key: string) -> bool {