增强版的cp

完全兼容系统cp特性
支持文件和目录断点续传，显示速度，进度，大小等等信息。
可用来替换系统cp。




代码如下（python）

#!/usr/bin/python
#coding:u8

#-------------------------------------------------------------------------------
# Name: mcp
# Created: 02/09/2013
# Copyright: (c) xk 2013
#-------------------------------------------------------------------------------

import os
import sys
import re
import platform
import time


class Mfile(object):
    def __init__(self,pfile,mode):
        self.file_dir = os.path.dirname(pfile)
        self.file_name = os.path.basename(pfile)
        self.file_path = os.path.abspath(pfile)
        self.file_mode = mode
        self.file_md5 = 'md5'

        self.file_uptime = 0
        self.file_uptime_size = 0

        if os.path.isfile(pfile):
            self.file_size = os.path.getsize(pfile)
        else:
            self.file_size = 0

        if self.file_size > 2000:
            self.file_get_size = self.file_size - 1000
            self.file_buffer_size = 1000
        else:
            self.file_get_size = self.file_size
            self.file_buffer_size = self.file_size

        try:
            self.file_open=open(self.file_path,self.file_mode)
        except Exception,e:
            open_status=1
            print e
            sys.exit()

    def move_tell(self,number):
        pass

    def __del__(self):
        pass


def fcp(s , d , show_size_on = 0 ):

    c=10485760
    sfile = Mfile(s,'rb')
    dfile = Mfile(d,'ab+')

    #修正指针偏移
    if sfile.file_size != 0:
        if (sfile.file_size != dfile.file_size) and ( dfile.file_size != 0):

            dfile.file_open.seek(dfile.file_get_size,0)
            sfile.file_open.seek(dfile.file_get_size,0)

            if dfile.file_open.read(dfile.file_buffer_size) == sfile.file_open.read(dfile.file_buffer_size):
                sfile.file_open.seek(dfile.file_size,0)
                dfile.file_open.seek(0,2)

            elif( 'yes' == raw_input('overwrite '+dfile.file_name+' [yes/no]:') ):
                dfile.file_open.close()
                dfile=Mfile(d,'wb+')
                sfile.file_open.seek(0,0)
            else:
                sfile.file_open.seek(0,2)
                dfile.file_open.seek(0,2)

        elif sfile.file_size == dfile.file_size :
            print 'File exists:',dfile.file_path,
            sfile.file_open.seek(0,2)

    #开始复制
    dfile.file_uptime=time.time()
    dfile_tell = sfile.file_open.tell()
    if ( sfile.file_size == 0 ):
        print (sfile.file_name)+' '*(50 - len(sfile.file_name)),'100% ['+ ('*'*50) +'] 0.0MB/s   | 0.0KB'
    else:
        while(sfile.file_open.tell() != sfile.file_size ):
            buffer=sfile.file_open.read(c)
            dfile.file_open.write(buffer)

            if ( show_size_on == 1 ):
                dfile.file_uptime_size = ( sfile.file_open.tell() - dfile_tell ) / (time.time() - dfile.file_uptime)
                show_size( sfile.file_size , sfile.file_open.tell() , dfile.file_name , dfile.file_uptime_size)
                #time.sleep(0.2)
        else:
            print ''

    del sfile
    del dfile



def dcp(s,d,jc=0,mshow=0):
    s = os.path.abspath(s)
    d = os.path.abspath(d)

    if ( s == d ) or ( s == d+'/'+os.path.basename(s) ):
        print 'cp :','\''+s+'\'','and','\''+d+'\'',': are the same file'
        sys.exit()

    #文件
    elif os.path.isfile(s):
        if os.path.isfile(d):
            fcp(s,d, show_size_on = mshow)
        elif os.path.isdir(d):
            d = d+'/'+os.path.basename(s)
            fcp(s,d, show_size_on = mshow)
        elif os.path.isdir( os.path.dirname(d)):
            fcp(s,d, show_size_on = mshow)
        else:
            print 'Not found file:',d

    #目录递归
    elif os.path.isdir(s) :
        if (os.path.isfile(d)):
            print 'cp :','\''+s+'\'','and','\''+d+'\'',': are the same file'
            sys.exit()
        elif not os.access(s,os.R_OK):
            print d,': Permission denied'
            sys.exit()
        elif s in d:
            print '\''+s+'\'','to','\''+d+'\'',": File error"
            sys.exit()
        #确定目标文件夹根路径（只调用一次）
        elif ( jc == 0 ):
            jc += 1
            if os.path.isdir(d):
                d = d+'/'+ os.path.basename(s)

        if os.path.isdir( os.path.dirname(d)):
            if not os.path.isdir(d):
                os.mkdir(d)
        else:
            print 'Not found :',os.path.dirname(d)
            sys.exit()

        for x in os.listdir(s):
                dcp(s+'/'+x ,d+'/'+x , jc ,mshow = mshow )

    elif not os.path.exists(s):
        print s,': No such file or directory'



def show_size(total_size , tail_size , filename , minute_size):
    filename = (filename)+' '*(50 - len(filename))

    #百分比
    if ( tail_size != total_size ):
        rate = (float(tail_size) / float(total_size) * 100)
        rate_sum = '%d%s' % (rate,'%')
    else:
        rate_sum = str(100)+'%'

    #进度条
    jd_size = '*' * (int(float(tail_size) / float(total_size) * 50))
    jd_size = '[%s%s]' % (jd_size , (' ' * (50 - len(jd_size))))

    #速度
    i=0
    #minute_size = minute_size / 2
    while ( minute_size >= 1024 and i <= 2):
        minute_size = float(minute_size) / float(1024)
        i = i + 1
    else:
        if i == 0:
            minute_size = str(round(minute_size,1)) + 'k/s'
        elif i == 1:
            minute_size = str(round(minute_size,1)) + 'kB/s'
        elif i == 2:
            minute_size = str(round(minute_size,1)) + 'MB/s'
    minute_size = '%s%s' % ( minute_size , ( ' ' * (10 - len(str(minute_size)) )))

    #已经复制大小
    i=0
    while ( tail_size >= 1024 and i < 2):
        tail_size = float(tail_size) / float(1024)
        i = i+1
    else:
        if i == 0 :
            tail_size = str(round(tail_size))+'K'
        elif i == 1:
            tail_size = str(round(tail_size))+'KB'
        elif i == 2:
            tail_size = str(round(tail_size))+'M'

    print '\r',filename , rate_sum , jd_size , minute_size , '|' , tail_size, '   ',
    sys.stdout.flush()



if __name__ == '__main__':
    sys_type=platform.system()

    if ( sys_type == 'Windows'):
        sfile=raw_input('source File:')
        dfile=raw_input('destination File:')

        try:
            dcp(sfile,dfile)
        except KeyboardInterrupt:
            sys.exit()
        os.system('pause')

    else:
        filelist=[]
        for x in sys.argv[1:]:
            if not re.match('-(.*)$', x):
                filelist.append(x)
        if ( len(filelist) == 2 ):

            try:
                dcp( filelist[0] , filelist[1] , mshow = 1)
            except KeyboardInterrupt:
                sys.exit()
        else:
            print '[ERROR]'
            print '  example :[ cp sfile dfile ]'