抄代码,可以抄到什么程度

抄代码,可以抄到什么程度最近,老是有同学跟我提到 "不会写代码,只会从网上抄",在加上前两天提到的本科毕业论文同学"做"过的微博系统,觉得有必要说一下1. 什么是可以从网上抄的.最粗暴简单的回答是:一个字母也不能复制粘贴.2. 抄到什么程度你仍然可以说那是你的程序.这是个老大的哲学问题了,不过咱们不讨论那么深.故事开始.前一段时间写的程序–把窗口由一个显示器切到另一个显示器的工具–有个缺点,如果窗口已经在大显示器上最大化了,或者很长,怎么也不移动了小显示器上。虽然我可以快捷键先把它整小,然后再移。终究不爽得很。忍了很久,而且前一段时间已经找到问题的症结。今天改了下程序。因为我的程序信赖的一个工具 xdotool,不能移动最大化的窗口。而且,如果窗口比目标显示器还大,也不能移动。首先想到的是可以先把窗口缩小,然后移走,再恢复原来的大小。奈何,我没有找到 xdotool 改变最大化窗口大小的方法。所以,此路不通。想起来另一个工具可以信赖,wmctrl,倒是可以操作。不过,它不能找到当前的激活窗口。而这,正是我们要移动的东西,得知道。在网上找到一德国兄弟的作品[http://my.opera.com/raphman/blog/show.dml/302528?cid=56972962#comment56972962],我改吧改吧抄吧抄吧,把关于xprop得到当前激活窗口的那段放我的代码里了。顺手,把用同一工具判定当前窗口是不是最大化啥的一段代码抄过来。因为窗口系统不太一样,他用KDE,我用GNOME,又改了一下。终于,我的程序能够工作了。放在[https://github.com/younggift/argus/blob/master/monitor_switch.sh]里了。现在,我们可以回过头来回答先前的问题了.1. 什么是可以从网上抄的.事实上,我们通常会抄一下 某种实现机制(比如怎么调用printf,它的参数)的代码示例, 从MSDN或者 code project 这样的站点中.当然,应该通读一下文档,而不是简单的抄代码.没有看懂的情况下就抄代码,实践证明,后患无穷.不读说明书就使用工具或者设备,是极其危险的.API也是一样.不过,如果已经了解原理,抄一段别人的实现,改吧改吧…似乎可以容忍.2. 抄到什么程度你仍然可以说那是你的程序.业务逻辑必须是你手写的,因为那是你的工作唯一区别于别人的东西.让你的需求适应用户的要求,而不是服从你能找到的资源的下限,即不能因为你手儿不行就降低要求,除非你明确知道你不行,别人也不能实现.如果我抄了德国哥们的整休代码,把其中KDE那部分换成了GNOME的,那就是大抄.我原来的代码是把适用于 左右显示器布局 的代码改成了 适用于 任何布局的双显示器, 这是加入了一部分功能, 有贡献,不过,整体的代码仍然是人家的.现在,我改成了用wmctrl,改动就又多了一些.郭小四同学抄了整体的人物设定和故事情节,那就是抄.如果只是引用一两句主席语录,那叫时尚.或者叫致敬.=======================#!/bin/bash#++++++++++++++++# Monitor Switch## Moves currently focused window from one monitor to the other.# Designed for a system with two monitors.# Script should be triggered using a keyboard shortcut.# If the window is maximized it should remain maximized after being moved.# If the window is not maximized it should retain its current size, unless# height is too large for the destination monitor, when it will be trimmed.#———————————————# dependence on xrandr, wmctrl, xprop, xwininfo, awk## modified by Young <gift.young@gmail.com># based on chips617's work at
[http://ubuntuforums.org/showthread.php?t=1045417].# based on Raphael Wimmer's work at
[http://my.opera.com/raphman/blog/show.dml/302528]# History:# 2011-3-19 bug fixed: we don't depend on xdotool any more, because we
can't find the function by it to manipulate the maximized window.# 1. If the left-top conner of the active window is out of your
monitors, we cannot determin which monitor is on, therefore we suppose
it is on monitor B.# 2. if one of the monitor is rotated left, the shortcut will be disabled.# 2011-1-31 The monitors can be at any position, not only left and right.# 2007-11 the original chips617's work# bugs knonw:# empty now.# resolution and position of monitorscount=0while read linedo keys[$((++count))]="${line}"done <<EOF$( xrandr -q | grep " connected" | awk '{print $3}' | awk -F'[x+]'
'{printf("%sn%sn%sn%sn",$1, $2, $3, $4)}' )EOFw_A_monitor=${keys[1]}h_A_monitor=${keys[2]}x_A_monitor=${keys[3]}y_A_monitor=${keys[4]}w_B_monitor=${keys[5]}h_B_monitor=${keys[6]}x_B_monitor=${keys[7]}y_B_monitor=${keys[8]}# get active window# window=`xdotool getactivewindow`activeWinLine=$(xprop -root | grep "_NET_ACTIVE_WINDOW(WINDOW)")window="${activeWinLine:40}"# window title bar height# h_tbar=29xWinDecorLine=$(xprop -id $window | grep "_NET_FRAME_EXTENTS(CARDINAL)")h_tbar=${xWinDecorLine:37 :2}# get active window size and positionx=`xwininfo -id $window | grep "Absolute upper-left X" | awk '{print $4}'`y=`xwininfo -id $window | grep "Absolute upper-left Y" | awk '{print $4}'`w=`xwininfo -id $window | grep "Width" | awk '{print $2}'`h=`xwininfo -id $window | grep "Height" | awk '{print $2}'`# calculate the new position of the window …## if the window was on A monitorif [ "$x" -ge $x_A_monitor ] && [ "$x" -le $[$x_A_monitor + $w_A_monitor] ] && [ "$y" -ge $y_A_monitor ] && [ "$y" -le $[$y_A_monitor + $h_A_monitor ] ] ; then x_target_monitor=$x_B_monitor y_target_monitor=$y_B_monitor w_target_monitor=$w_B_monitor h_target_monitor=$h_B_monitor x_source_monitor=$x_A_monitor y_source_monitor=$y_A_monitor## if the window was on B monitorelse x_target_monitor=$x_A_monitor y_target_monitor=$y_A_monitor w_target_monitor=$w_A_monitor h_target_monitor=$h_A_monitor x_source_monitor=$x_B_monitor y_source_monitor=$y_B_monitorfinew_x=$(($x-$x_source_monitor+$x_target_monitor))new_y=$(($y-$y_source_monitor+$y_target_monitor-$h_tbar))# … and the width or the height up to the edge of the target monitorif (($w > $w_target_monitor))then w=$w_target_monitorfiif (($h > $h_target_monitor))then h=$h_target_monitorfi# move the window to another monitor# if maximized store info and de-maximizewinState=$(xprop -id $window | grep "_NET_WM_STATE(ATOM)" )if [[ `echo ${winState} | grep "_NET_WM_STATE_MAXIMIZED_HORZ"` != "" ]]then maxH=1 wmctrl -i -r $window -b remove,maximized_horzfiif [[ `echo ${winState} | grep "_NET_WM_STATE_MAXIMIZED_VERT"` != "" ]]then maxV=1 wmctrl -i -r $window -b remove,maximized_vertfi# do movewmctrl -i -r $window -e 0,$new_x,$new_y,$w,$h# the following lines are for debug.# echo x x_source_monitor x_target_monitor# echo $x $x_source_monitor $x_target_monitor# echo y y_source_monitor y_target_monitor# echo $y $y_source_monitor $y_target_monitor# echo h $h w $w# echo new_x $new_x# echo new_y $new_y# restore maximization((${maxV})) && wmctrl -i -r $window -b add,maximized_vert((${maxH})) && wmctrl -i -r $window -b add,maximized_horz# raise window (seems to be necessary sometimes)#wmctrl -i -a $window# and byeexit 0

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