Added: debug script without colors

Author: patrickallaert

README.md

@@ -37,4 +37,8 @@ Colors are also used to denote slow queries: time displayed in red instead of
 green. When a query returns no rows nor affect records, "<NONE>" is displayed
 using red in reverse video.
 
+### debug-blind.lua
+
+Same as debug.lua, but without shell colors.
+
 [mysql-proxy]: http://forge.mysql.com/wiki/MySQL_Proxy

debug-blind.lua

@@ -0,0 +1,78 @@
+-- MySQL Proxy script for development/debugging purposes
+--
+-- Written by Patrick Allaert <[email protected]>
+-- Copyright © 2009-2011 Libereco Technologies
+-- 
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+transaction_counter = 0
+
+function read_query( packet )
+    if packet:byte() ~= proxy.COM_QUERY then
+        return
+    end
+    proxy.queries:append(1, string.char(proxy.COM_QUERY) .. packet:sub(2), {resultset_is_needed = true}) 
+
+    return proxy.PROXY_SEND_QUERY
+end
+
+function read_query_result (inj)
+  local res = assert(inj.resultset)
+  local error_status = ""
+  if res.flags.no_good_index_used then
+    error_status = error_status .. "No good index used!"
+  end
+  if res.flags.no_index_used then
+    error_status = error_status .. "No index used!"
+  end
+  local row_count = 0
+  if res.affected_rows then
+    row_count = res.affected_rows
+  else
+    local num_cols = string.byte(res.raw, 1)
+    if num_cols > 0 and num_cols < 255 then
+      for row in inj.resultset.rows do
+        row_count = row_count + 1
+      end
+    end
+  end
+  if res.query_status == proxy.MYSQLD_PACKET_ERR then
+    error_status = string.format("%q", res.raw:sub(10)) 
+  end
+  local query = string.gsub(string.sub(inj.query, 2), "%s+", " ")
+  local word = string.upper(string.sub(query,1,6))
+  if word == "COMMIT" then
+    transaction_counter = transaction_counter - 1
+  end
+
+  local i = 0
+  while i < transaction_counter do
+    io.write("    ")
+    i = i +1
+  end
+
+  if string.upper(string.sub(query,1,5)) == "BEGIN" then
+    transaction_counter = transaction_counter + 1
+  end
+  
+  print(
+    string.format(
+      "%s\t%s\t%s\t%fms", 
+      query,
+      error_status,
+      row_count == 0 and "<NONE>" or row_count,
+      inj.response_time / 1e3
+    )
+  )
+end