From 3ae7113a61b03671b69adb1faac1bf61aea4b917 Mon Sep 17 00:00:00 2001
From: Allen Shaw <shuxiao9058@qq.com>
Date: Sat, 8 Sep 2018 14:10:43 +0800
Subject: [PATCH 1/3] add support format buffer from stdin

---
 commandline.lua | 64 ++++++++++++++++++++++++++++++-------------------
 1 file changed, 40 insertions(+), 24 deletions(-)

diff --git a/commandline.lua b/commandline.lua
index 2587eb0..21095e3 100755
--- a/commandline.lua
+++ b/commandline.lua
@@ -6,6 +6,7 @@ if _VERSION ~= 'Lua 5.1' then
 end
 
 local help = [[Formats Lua code.
+  -i, --stdin Read buffer from stdin.
   -a, --autosave Flush formatted Lua in given file instead of stdout.
   -s, --spaces (default 2) Spaces to use as indentation.
   -t, --tabs   (default 0) Tabulation(s) to use as indentation.
@@ -28,7 +29,7 @@ end
 --
 -- Check arguments
 --
-if #args == 0 then
+if not args.stdin and #args == 0 then
   print 'No files to format.'
   return
 elseif not (args.spaces or args.tabs) then
@@ -64,32 +65,47 @@ end
 -- Output formatted file
 --
 local formatter = require 'formatter'
-for _, filename in ipairs(args) do
 
-  --
-  -- Reading file
-  --
-  local file, err = io.open(filename, 'r')
-  if not file then print( err ) return end
-  local code, err = file:read('*a')
-  if not code then print( err ) return end
-  file:close()
+-- Read from stdin
+if args.stdin then
+  code = io.read("*a")
+    -- Format source
+    local formatted, errormessage = formatter.indentcode(code, delimiter, true,
+      indentation)
 
-  -- Format source
-  local formatted, errormessage = formatter.indentcode(code, delimiter, true,
-    indentation)
-  if formatted then
-    if args.autosave then
-      -- Saving formatted code straight in original file
-      local file, err = io.open(filename, 'w+')
-      if not file then print( err ) return end
-      local code, err = file:write(formatted)
-      if not code then print( err ) return end
-      file:close()
+     if formatted then
+      print( string.format('%s\n', formatted) )
+     else
+            print(string.format('Unable to format stdin:\n%s', errormessage))
+     end
+else
+  for _, filename in ipairs(args) do
+
+    --
+    -- Reading file
+    --
+    local file, err = io.open(filename, 'r')
+    if not file then print( err ) return end
+    local code, err = file:read('*a')
+    if not code then print( err ) return end
+    file:close()
+
+    -- Format source
+    local formatted, errormessage = formatter.indentcode(code, delimiter, true,
+      indentation)
+    if formatted then
+      if args.autosave then
+        -- Saving formatted code straight in original file
+        local file, err = io.open(filename, 'w+')
+        if not file then print( err ) return end
+        local code, err = file:write(formatted)
+        if not code then print( err ) return end
+        file:close()
+      else
+        io.write(formatted)
+      end
     else
-      io.write(formatted)
+      print(string.format('Unable to format `%s`:\n%s', filename, errormessage))
     end
-  else
-    print(string.format('Unable to format `%s`:\n%s', filename, errormessage))
   end
 end

From 5343e66db2960cb94379c44cb12bafc3b5284268 Mon Sep 17 00:00:00 2001
From: Allen Shaw <shuxiao9058@qq.com>
Date: Sat, 8 Sep 2018 14:17:28 +0800
Subject: [PATCH 2/3] remove \n

---
 commandline.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/commandline.lua b/commandline.lua
index 21095e3..786ddd3 100755
--- a/commandline.lua
+++ b/commandline.lua
@@ -74,7 +74,7 @@ if args.stdin then
       indentation)
 
      if formatted then
-      print( string.format('%s\n', formatted) )
+      print( formatted )
      else
             print(string.format('Unable to format stdin:\n%s', errormessage))
      end

From 05045ea215d8b81a9777823eadafd480aaec0f7e Mon Sep 17 00:00:00 2001
From: Allen Shaw <shuxiao9058@qq.com>
Date: Sat, 8 Sep 2018 14:19:42 +0800
Subject: [PATCH 3/3] reformat

---
 commandline.lua | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/commandline.lua b/commandline.lua
index 786ddd3..7400d26 100755
--- a/commandline.lua
+++ b/commandline.lua
@@ -69,15 +69,14 @@ local formatter = require 'formatter'
 -- Read from stdin
 if args.stdin then
   code = io.read("*a")
-    -- Format source
-    local formatted, errormessage = formatter.indentcode(code, delimiter, true,
-      indentation)
-
-     if formatted then
-      print( formatted )
-     else
-            print(string.format('Unable to format stdin:\n%s', errormessage))
-     end
+  -- Format source
+  local formatted, errormessage = formatter.indentcode(code, delimiter, true,
+    indentation)
+  if formatted then
+    print( formatted )
+  else
+    print(string.format('Unable to format stdin:\n%s', errormessage))
+  end
 else
   for _, filename in ipairs(args) do