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#encoding=utf-8

from PIL import Image

import argparse

import os,os.path

import sys

def thumb(src,to):

"""

读取文件或者遍历文件夹，将图片缩略

"""

if not os.path.exists(src):

print "src directory or file not exits"

sys.exit(0)

if os.path.isfile(src):

thumb_file(src,to)

elif os.path.isdir(src):

thumb_dir(src,to)

else:

print "src neither a file or a directory"

sys.exit(0)

def thumb_file(src,to):

#print src,to

#print to + "/thumb_" + os.path.split(src)[1]

img = Image.open(src)

size = get_proper_size(img)

img.thumbnail(size)

if not os.path.exists(to):

os.makedirs(to)

img.save(to+"/thumb_"+os.path.split(src)[1])

img.close()

def thumb_dir(src_dir,to_dir):

for root,dirs,files in os.walk(src_dir,topdown=True):

for fname in files:

filename = os.path.join(root,fname)

thumb_file(filename,to_dir)

def get_proper_size(fp,max_size=1000):

"""

获得图片一个合适的缩略大小，最大尺寸不要超过1000

"""

(width,height) = fp.size

x = max(width,height) / max_size

if x:

return (width / x,height / x)

return (width,height)

def main():

parser = argparse.ArgumentParser()

parser.add_argument("src",default="full",help="file or directory thumbnail from")

parser.add_argument("to",default="thumb",help="directory thumbnail to")

args = parser.parse_args()

thumb(args.src,args.to)

if __name__ == "__main__":

main()