用c的写python模块的演示
文章分类:Web前端 不说话,贴代码uuxx/test.py
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#!/usr/bin/env python
import uuxx
for i in range(111):
filename=uuxx.uufilename()
print filename,len(filename)
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uuxx/setup.py
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#!/usr/bin/python
from distutils.core import setup, Extension
setup(
name = "uuxx",
version = "1.1",
author = "zsp",
author_email = "[email protected]",
url = "http://zsp.javaeye.com",
description = "uuid for more things",
license = "GPL",
classifiers = [
"License :: GPL",
"Programming Language :: C++"],
ext_modules = [
Extension(
"uuxx",
["uuxx.cpp"],
include_dirs = ["/usr/include/"],
libraries = ["uuid","util"]
)
]
)
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uuxx.cpp
________________________
extern "C" {
#include <uuid/uuid.h>
#include <Python.h>
}
void base64_encode(const void * pdata,const unsigned long data_size, void * out_pcode)
{
static const unsigned char base64char[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_!" ;
if (data_size <=0 ) return ;
const unsigned char * pS = (const unsigned char *)pdata;
const unsigned char * pSEnd = &pS[data_size];
unsigned char * pD =(unsigned char *)out_pcode;
for (;pS <pSEnd-2 ;pS+=3 ,pD+=4 )
{
pD[0 ] = base64char[pS[0 ]>> 2 ];
pD[1 ] = base64char[0x3F & (pS[0 ] <<4 | pS[1 ]>> 4 )];
pD[2 ] = base64char[0x3F & (pS[1 ] <<2 | pS[2 ]>> 6 )];
pD[3 ] = base64char[0x3F & pS[2 ]];
}
//static const unsigned char BASE64_PADDING='=';
switch (pSEnd-pS)
{
case 1 :
pD[0 ]=base64char[pS[0 ]>> 2 ];
pD[1 ]=base64char[0x3F & (pS[0 ] <<4 )];
//pD[2] = BASE64_PADDING;
//pD[3] = BASE64_PADDING ;
break ;
case 2 :
pD[0 ]=base64char[pS[0 ]>> 2 ];
pD[1 ]=base64char[0x3F & (pS[0 ] <<4 | pS[1 ]>> 4 )];
pD[2 ]=base64char[0x3F & (pS[1 ] <<2 )];
//pD[3] = BASE64_PADDING ;
break ;
}
};
PyObject * uufilename(PyObject * args,PyObject *kwds){
uuid_t uu;
uuid_generate( uu );
//用的改造过的base64的编码+改造的uuid
static const unsigned data_size=16 ;
static const int b64_length = (data_size+2 )/3 *4 -2 ;
char b64uu[data_size];
base64_encode(uu,data_size,b64uu);
PyObject *value = PyString_FromStringAndSize(b64uu,b64_length);
return value;
};
PyDoc_STRVAR(uufilename__doc__,
"uufilename"
);
static PyMethodDef uuxx_methods[] = {
{
"uufilename" ,
uufilename,
METH_VARARGS,
uufilename__doc__
},
{NULL, NULL, 0 , NULL}
};
PyMODINIT_FUNC inituuxx(){
Py_InitModule("uuxx" , uuxx_methods);
}
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