improve linewidth

xmake/core/base/utils.lua

@@ -324,7 +324,7 @@ end
 -- generate c/c++ code from the binary file
 function utils.bin2c(binaryfile, outputfile, opt)
     opt = opt or {}
-    return utils._bin2c(binaryfile, outputfile, opt.linewidth or 0x20, opt.nozeroend or false)
+    return utils._bin2c(binaryfile, outputfile, opt.linewidth or 32, opt.nozeroend or false)
 end
 
 -- return module

xmake/modules/private/utils/bin2c.lua

@@ -35,7 +35,7 @@ function _do_dump(binarydata, outputfile, opt)
     local p = 0
     local e = binarydata:size()
     local line = nil
-    local linewidth = opt.linewidth or 0x20
+    local linewidth = opt.linewidth or 32
     local first = true
     while p < e do
         line = ""
@@ -81,6 +81,22 @@ function _do_bin2c(binarypath, outputpath, opt)
     -- trace
     print("generating code data file from %s ..", binarypath)
 
+    -- optimize the default linewidth for reading large file
+    if not opt.linewidth then
+        local filesize = os.filesize(binarypath)
+        if filesize > 1024 * 1024 * 1024 then
+            opt.linewidth = 512
+        elseif filesize > 100 * 1024 * 1024 then
+            opt.linewidth = 256
+        elseif filesize > 10 * 1024 * 1024 then
+            opt.linewidth = 128
+        elseif filesize > 1024 * 1024 then
+            opt.linewidth = 64
+        else
+            opt.linewidth = 32
+        end
+    end
+
     -- do dump
     if utils.bin2c then
         utils.bin2c(binarypath, outputpath, opt)