1 files changed, 45 insertions, 0 deletions
diff --git a/example/luatest/script/handle_weixinnum.lua b/example/luatest/script/handle_weixinnum.lua
new file mode 100644
index 0000000..971845e
--- /dev/null
+++ b/example/luatest/script/handle_weixinnum.lua
@@ -0,0 +1,45 @@
+---------------------------------------------------------------------------------------------
+--                          脚本功能：在数据中查找符合特征的weixinnum                      --
+--  特征如下：                                                                             --
+--  00 00 00 09 | 77 65 69 78 69 6e 6d 75 2d | 00 00 00 0a | 31 39 35 35 37 34 30 37 38 30 --
+--  weixinnum   | w  e  i  x  i  n  n  u  m  | weixinnum   | 1  9  5  5  7  4  0  7  8  0  --
+--  字符串长度  |    字符串                  | 数值长度    |        字符串                 --
+---------------------------------------------------------------------------------------------
+
+local data = tsg.data   --tsg.data 获取待处理数据 
+local data_len = string.len(tsg.data)
+local feature = "weixinnum" --待识别的特征
+local max_weixinnum_len = 12
+local offset = 4 -- 字符串长度所占位数
+local locate = 0 -- 字符串中当前正在处理的位置
+
+-- 查找字符串weixinnum位置
+local _start, _end = string.find(data, feature)
+if not _end then
+    return 1, false
+end
+
+-- 获取weixinnum数值字符串长度
+-- weixinnum数值字符串长度不超过12，所以前三位必须为0
+if ((string.byte(data, _end + 1) ~= 0) or (string.byte(data, _end + 2) ~=0 ) or (string.byte(data, _end + 3) ~= 0)) then
+    return 1, false
+end
+local weixinnum_len = string.byte(data, _end + offset)
+if not weixinnum_len then
+    return 1, false
+end
+locate = _end + offset
+
+-- 判断weixinnum数值字符串长度的合法性
+if weixinnum_len > data_len - _end - offset  or weixinnum_len > max_weixinnum_len then
+    return 1, false
+end
+
+-- 获取weixinnum数值字符串
+local weixinnum = string.sub(data, locate + 1, locate + weixinnum_len)
+-- weixinnum数值字符串是否可以转换为数字
+if tonumber(weixinnum) then
+    return weixinnum_len, weixinnum
+else
+    return 1, false
+end