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| import ctypes
from ctypes import *
import json
def loadtext(path):
try:
f = open(path,"r")
txt = f.read()
f.close()
return txt
except Exception as e:
print("load file error! {}".format(path))
return None
return None
def txt2json(text):
try:
jsondict=json.loads(text)
return jsondict
except Exception as e:
print('json error!')
return None
return None
def json2txt(jsondict):
try:
text=json.dumps(jsondict)
return text
except Exception as e:
print('json error!')
return None
return None
def call_func(obj, name, params, types, restype=None):
try:
funcname="obj."+name
strtypes=""
args=[]
for i in range(len(params)):
args.append(params[i])
if strtypes=="":
strtypes=types[i]
else:
strtypes=strtypes+","+types[i]
if "" != strtypes:
strtypes="["+strtypes+"]"
sss = funcname+".argtypes="+strtypes
exec(sss)
if restype:
sss = funcname+".restype="+restype
exec(sss)
res = eval(funcname)(*args)
print("{} {} {} ".format(funcname, params, res))
except BaseException as e:
return False, str(e)
return True , res
def call_dll_funcs(data):
path = data["path"]
dll = data["dll"]
calls=data["calls"]
msg={"dll":dll}
if not dll or not path:
msg["msg"] = "dll or path不能为空！"
return False , msg
if "" == dll or "" == path:
msg["msg"] = "dll or path不能为空！"
return False , msg
msg ={}
try:
obj = ctypes.cdll.LoadLibrary(path)
for name in calls:
params = calls[name].get("params")
types = calls[name].get("types")
restype = calls[name].get("restype")
if not params or not types:
msg["msg"] = "params or types不能为空！"
return False , msg
if len(params) != len(types):
msg["msg"] = "params and types数量不等！"
return False , msg
flg, res = call_func(obj, name, params, types, restype)
msg[name]={}
if flg:
msg[name]["res"] = res
else:
msg[name]["msg"] = res
except BaseException as e:
msg["msg"]=str(e)
return False , msg
return True, msg
def test_loaddll2(mjs):
if not mjs:
return False, "空参数"
print("call={}", mjs)
msgs = {}
for index in mjs:
data = mjs[index]
res, msg = call_dll_funcs(data)
msgs[index]=msg
print(msgs)
js = json2txt(msgs)
print("msg={}".format(js))
return True, msgs
if __name__ == "__main__":
js = '{"d1":{"dll":"dynamic.dll","path":"./dynamic.dll","calls":{"addf":{"params":[1.1,2.2],"types":["c_float","c_float"],"restype":"c_float"},"add":{"params":[1,2],"types":["c_int","c_int"],"restype":"c_int"},"sub":{"params":[1,2],"types":["c_int","c_int"]},"add3":{"params":[1,2,3],"types":["c_int","c_int","c_int"]} } } }'
mapa = txt2json(js)
test_loaddll2(mapa)
|
