mirror of https://gitlab.com/ita1024/waf.git
123 lines
2.5 KiB
Python
Executable File
123 lines
2.5 KiB
Python
Executable File
#! /usr/bin/env python
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import os, subprocess, shutil, random, optparse
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comp = {
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'bz2': 'cjf',
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'xz' : 'cJf',
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'gz' : 'czf',
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}
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def read_wafdir():
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try:
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os.listdir('waflib')
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except:
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raise ImportError('please provide a waflib directory in the current folder')
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d = 'waflib'
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lst = [d + os.sep + x for x in os.listdir(d) if x.endswith('.py')]
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e = d + os.sep + 'Tools'
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lst.extend([e + os.sep + x for x in os.listdir(e) if x.endswith('.py')])
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f = d + os.sep + 'extras'
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lst.extend([f + os.sep + x for x in os.listdir(f) if x.endswith('.py')])
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random.shuffle(lst)
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#lst.sort()
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return lst
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def gen(lst, options):
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if options.maxi:
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opti_ref = 0
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filename = 'max.tar.%s' % options.kind
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def compare(a, b):
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return a > b
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else:
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opti_ref = 1000000000
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filename = 'min.tar.%s' % options.kind
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def compare(a, b):
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return a < b
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cmd = 'tar %s %s ' % (comp[options.kind], filename)
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opti = [opti_ref]
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LEN = len(lst)
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POP = 3*LEN + 1
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popul = [range(LEN) for x in xrange(POP)]
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fitn = [0 for x in xrange(POP)]
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def rnd():
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return random.randint(0, LEN -1)
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def mutate():
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for x in xrange(LEN):
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# rotate the previous element by one
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v = popul[x+LEN] = popul[x+LEN - 1]
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a = v.pop(0)
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v.append(a)
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for x in xrange(LEN):
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# swap elements
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a = rnd()
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b = rnd()
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v = popul[x]
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c = v[a]
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v[a] = v[b]
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v[b] = c
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for x in xrange(LEN):
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# get one element out, add at the end
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v = popul[x+2*LEN]
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a = rnd()
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c = v[a]
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del v[a]
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v.append(c)
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def evil():
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best = opti_ref
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pos = -1
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for x in xrange(len(popul)):
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v = popul[x]
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arr = [lst[a] for a in v]
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tmp = '%s %s' % (cmd, ' '.join(arr))
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subprocess.Popen(tmp, shell=True).wait()
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siz = os.stat(filename).st_size
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fitn[x] = siz
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if compare(siz, best):
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best = siz
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pos = x
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if compare(siz, opti[0]):
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opti[0] = siz
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shutil.copy2(filename, 'best_' + filename)
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#print popul[x], sum(popul[x]), sum(range(LEN))
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assert (sum(popul[x]) == sum(range(LEN)))
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#print pos
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for x in xrange(len(popul)):
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if x == pos:
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continue
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popul[x] = popul[pos][:]
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assert(len(popul[x]) == LEN)
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return best
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for i in xrange(10000):
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mutate()
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print(evil())
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if __name__ == '__main__':
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parser = optparse.OptionParser()
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parser.add_option('--max', dest='maxi', default=False, action='store_true', help='maximize the file size (default is minimize)')
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parser.add_option('--kind', dest='kind', default='bz2', action='store', help='bz2, xz or gz')
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(options, args) = parser.parse_args()
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lst = read_wafdir()
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gen(lst, options)
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