fix(swiftformat): range formatting support and add cwd (#326)

1 files changed, 11 insertions, 0 deletions

diff --git a/lua/conform/formatters/swiftformat.lua b/lua/conform/formatters/swiftformat.lua
index ed142ad..adde245 100644
--- a/lua/conform/formatters/swiftformat.lua
+++ b/lua/conform/formatters/swiftformat.lua
@@ -5,5 +5,16 @@ return {
     description = "SwiftFormat is a code library and command-line tool for reformatting `swift` code on macOS or Linux.",
   },
   command = "swiftformat",
+  stdin = true,
   args = { "--stdinpath", "$FILENAME" },
+  range_args = function(self, ctx)
+    local startOffset = tonumber(ctx.range.start[1]) - 1
+    local endOffset = tonumber(ctx.range["end"][1]) - 1
+
+    return {
+      "--linerange",
+      startOffset .. "," .. endOffset,
+    }
+  end,
+  cwd = require("conform.util").root_file({ ".swiftformat", "Package.swift", "buildServer.json" }),
 }