Merge pull request #21 from vxcontrol/add-cmd-exec

add utils/system

utils/system/info.lua

@@ -0,0 +1,38 @@
+require("yaci")
+require("strict")
+local pp    = require("pp")
+local glue  = require("glue")
+
+CSystemInfo = newclass("CSystemInfo")
+
+function CSystemInfo:print(...)
+    if self.is_debug then
+        local t = glue.pack(...)
+        for i, v in ipairs(t) do
+            t[i] = pp.format(v)
+        end
+        print(glue.unpack(t))
+    end
+end
+
+function CSystemInfo:init(is_debug)
+    self.is_debug = false
+
+    if type(is_debug) == "boolean" then
+        self.is_debug = is_debug
+    end
+    self:print("intialize CSystemInfo object")
+end
+
+function CSystemInfo:exec_cmd(cmd, raw)
+    self:print("cmd to exec: " .. tostring(cmd))
+    local f = assert(io.popen(cmd, 'r'))
+    local s = assert(f:read('*a'))
+    f:close()
+    self:print("cmd output: " .. tostring(s))
+    if raw or raw == nil then return s end
+    s = string.gsub(s, '^%s+', '')
+    s = string.gsub(s, '%s+$', '')
+    s = string.gsub(s, '[\n\r]+', ' ')
+    return s
+end

utils/system/init.lua

@@ -0,0 +1 @@
+require("system.info")