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pipe.py
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57 lines (55 loc) · 1.87 KB
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"""
/*
*
* The MIT License (MIT)
*
* Copyright (c) Sharil Tumin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
"""
class Pipe():
def __init__(my, s=100):
my.a=bytearray([0]*s);my.s=s
my.h=my.t=my.n=0
def put(my, w):
if my.n>=my.s:
return 0
else:
m=my.n
for v in list(w):
my.a[my.t]=v;my.t+=1;my.n+=1
if my.t==my.s:my.t=0
if my.n>=my.s or my.t==my.h: return my.n-m
return my.n-m
def get(my, c=0):
if my.n==0 or c<0:
return ''
else:
if c>my.n or c==0: c=my.n
if my.h+c<=my.s:
w=my.a[my.h:my.h+c]
my.h=(my.h+c)%my.s
else:
w=my.a[my.h:]+my.a[0:c-(my.s-my.h)]
my.h=c-(my.s-my.h)
my.n-=c
if my.n==0:
my.t=my.h
return w