From 0f44fc860f5481893bfe46c9339be953533aef8b Mon Sep 17 00:00:00 2001
From: TitanSnow <sweeto@live.cn>
Date: Wed, 10 May 2017 14:02:21 +0800
Subject: check feature readline before load/save replhistory

---
 xmake/plugins/lua/xmake.lua | 42 +++++++++++++++++++++++++-----------------
 1 file changed, 25 insertions(+), 17 deletions(-)

(limited to 'xmake/plugins/lua/xmake.lua')

diff --git a/xmake/plugins/lua/xmake.lua b/xmake/plugins/lua/xmake.lua
index bef62203b..269e1b944 100644
--- a/xmake/plugins/lua/xmake.lua
+++ b/xmake/plugins/lua/xmake.lua
@@ -34,8 +34,11 @@ task("lua")
         -- imports
         import("core.base.option")
         import("core.sandbox.sandbox")
-        import("core.project.history")
-        import("lib.readline")
+        local enable_readline = os.versioninfo().features.readline
+        if enable_readline then
+            import("core.project.history")
+            import("lib.readline")
+        end
 
         -- list all scripts?
         if option.get("list") then
@@ -58,28 +61,33 @@ task("lua")
                 import("scripts." .. name).main(unpack(option.get("arguments") or {}))
             end
         else
-            -- clear history
-            readline.clear_history()
-
-            -- load history
-            local replhistory = history.load("replhistory") or {}
-            for _, ln in ipairs(replhistory) do
-                readline.add_history(ln)
+            local replhistory
+            if enable_readline then
+                -- clear history
+                readline.clear_history()
+
+                -- load history
+                replhistory = history.load("replhistory") or {}
+                for _, ln in ipairs(replhistory) do
+                    readline.add_history(ln)
+                end
             end
 
             -- enter interactive mode
             sandbox.interactive()
 
-            -- save to history
-            local entries = readline.get_history_state().entries
-            if #entries > #replhistory then
-                for i = #replhistory+1, #entries do
-                    history.save("replhistory", entries[i].line)
+            if enable_readline then
+                -- save to history
+                local entries = readline.get_history_state().entries
+                if #entries > #replhistory then
+                    for i = #replhistory+1, #entries do
+                        history.save("replhistory", entries[i].line)
+                    end
                 end
-            end
 
-            -- clear history
-            readline.clear_history()
+                -- clear history
+                readline.clear_history()
+            end
         end
     end)
 
-- 
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