一段用来清除C++/C代码中空白行的perl脚本

用Umbrello自动生成框架之后，里面有很多临时用不着的空行，而且生成的头文件都是单词开头大写字母，但是到了内部的#include就成了小写，于是写了个脚本解决这个问题

对于#ifndef..#define .. #endif在 #define行之后及 #endif行之前会各加一个空行

perl对我而言是救急语言，写的草率，将就着用吧……

使用：

ls *.cpp *.h|./changeFile.pl

#!/usr/bin/perl -w
#TO DO:
#replace all header includes which are in lowercase
#remove all blank lines
#among all the .cpp files in the argument list
@headers= qw/ActThread.h  InvalidSettingsException.h  PacketHeader.h   QString.h QObject.h QThread.h SniffThread.h DialogManager.h  LuaSetDialog.h              PacketList.h      Thread.h Exception.h      LuaSettings.h               SetDialog.h       ThreadManager.h HttpSetDialog.h  LuaThread.h                 Settings.h HttpSettings.h   MainWindow.h  SniffSetDialog.h HttpThread.h  Packet.h  SniffSettings.h/;
sub editFile {
    $fileName=$_[0];
    $tmpFileName=$fileName.".tmp";
    if($fileName ne "." && $fileName ne "..") {
        if(! open READFILE,$fileName) {
            die "Cannot open file";
        }
        if(! open TMPFILE,">".$tmpFileName) {
            die "Cannot create file";
        }
        print "File Name :".$fileName."\n";
        while(<READFILE>) {
            if(/^\n/) {
                #print "BlankLine";
            }else{
                $line=$_;
                if(!/_H/) {
                    foreach $headerFile (@headers) {
                        if(/($headerFile)/i){
                            $line=~s/$1/$headerFile/;
                        }
                    }
                }
                if(/endif/){ print TMPFILE "\n";}
                print TMPFILE $line;
                if(/define/){ print TMPFILE "\n";}
            }
        }
        close READFILE;
        close TMPFILE;
        `rm $fileName`;
        `mv $tmpFileName $fileName`;
    }
}
while(<>){
chomp($_);
editFile($_);
}