From acbb2104cd089c1481c77ca376a6994cb15d1605 Mon Sep 17 00:00:00 2001
From: Ryan Gonzalez <git@refi64.dev>
Date: Sat, 19 Aug 2023 19:35:55 -0500
Subject: [PATCH] converter: Support writing to stdout

---
 tools/alys_converter.cr | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/tools/alys_converter.cr b/tools/alys_converter.cr
index 0f2154f..a8c5bdc 100644
--- a/tools/alys_converter.cr
+++ b/tools/alys_converter.cr
@@ -458,6 +458,15 @@ enum Format
   end
 end
 
+def convert(*, from reader : EventReader, to dest : IO, format : Format, indent_json : Bool)
+  case format
+  when Format::JSON
+    CustomJsonEventWriter.write from: reader, to: dest, indent_json: indent_json
+  when Format::PProf
+    PProfEventWriter.write from: reader, to: dest
+  end
+end
+
 def run
   indent_json = false
   symbolizer = nil
@@ -506,12 +515,11 @@ def run
   event = File.open source do |source_file|
     source = MessagePack::IOUnpacker.new source_file
     reader = EventReader.new source, symbolizer
-    File.open dest, "w" do |dest_file|
-      case format
-      when Format::JSON
-        CustomJsonEventWriter.write from: reader, to: dest_file, indent_json: indent_json
-      when Format::PProf
-        PProfEventWriter.write from: reader, to: dest_file
+    if dest == "-"
+      convert from: reader, to: STDOUT, format: format, indent_json: indent_json
+    else
+      File.open dest, "w" do |dest_file|
+        convert from: reader, to: dest_file, format: format, indent_json: indent_json
       end
     end
   end
-- 
2.45.2