会编程的请进～～

Posted 2023-03-09

请大家帮个忙来实现一个这样的程序：它能根据用户的需要，将一个大的文件分割成几个小的文件，这些小文件的长度和名称可以由用户指定，也可以是默认值。它能将几个小文件合并成一个大文件，大文件的名称也可以由用户指定，也可以是默认值。要求用户操作比较方便。谢谢大家了～～
我的E－mail地址：[e-mail]
不是我吝啬只给那么点分，是我只有10分全给你们了。大家进来编程提高水平嘛，不要总为了拿分啊~~
注：请用C来做——————

不难,用流(文件类的SEEK也行)来做,动手试试吧

附上超级猛料上摘来的原代码,呵呵,大致意思看看就明白了,DELPHI写的,改成C/C++很方便的,动手做做看吧

至于原作者嘛...对不起了,上面没写...
unit mgr;
interface

uses

Windows, Messages, SysUtils, Classes, Forms,

StdCtrls,shlobj, Controls, Dialogs,shellapi;

type

TForm1 = class(TForm)

GroupBox1: TGroupBox;

Button1: TButton;

OpenDialog1: TOpenDialog;

SaveDialog1: TSaveDialog;

Button3: TButton;

GroupBox2: TGroupBox;

ListBox1: TListBox;

procedure Button1Click(Sender: TObject);

procedure Button3Click(Sender: TObject);

procedure FormCreate(Sender: TObject);

procedure SaveDialog1CanClose(Sender: TObject; var CanClose: Boolean);

procedure ListBox1DblClick(Sender: TObject);

procedure FormDestroy(Sender: TObject);

private

Private declarations

fstream1:tfilestream;

fstream2:tfilestream;

list:tstrings;

len:tstrings;

public

Public declarations

end;

var

Form1: TForm1;

implementation

$R *.DFM

const

flen=136192; //请注意修改这儿的长度

type

FILE_INFO=record

filename:array[0..MAX_PATH] of char;

len:integer;

end;

function SelectDirectory(handle:hwnd;const Caption: string; const Root: WideString;out Directory: string): Boolean;

var

lpbi:_browseinfo;

buf:array [0..MAX_PATH] of char;

id:ishellfolder;

eaten,att:cardinal;

rt:pitemidlist;

initdir:pwidechar;

begin

result:=false;

lpbi.hwndOwner:=handle;

lpbi.lpfn:=nil;

lpbi.lpszTitle:=pchar(caption);

lpbi.ulFlags:=BIF_RETURNONLYFSDIRS+BIF_EDITBOX;

SHGetDesktopFolder(id);

initdir:=pwchar(root);

id.ParseDisplayName(0,nil,initdir,eaten,rt,att);

lpbi.pidlRoot:=rt;

getmem(lpbi.pszDisplayName,MAX_PATH);

try

result:=shgetpathfromidlist(shbrowseforfolder(lpbi),buf);

except

freemem(lpbi.pszDisplayName);

end;

if result then

begin

directory:=buf;

if length(directory)<>3 then directory:=directory+';

end;

end;

procedure TForm1.Button1Click(Sender: TObject);

var

info:FILE_INFO;

i:integer;

buf:array[0..4096] of byte;

s:integer;

begin

if savedialog1.Execute then

if opendialog1.Execute then

begin

try

copyfile(pchar(paramstr(0)),pchar(savedialog1.FileName),false);

fstream1:=tfilestream.Create(pchar(savedialog1.FileName),fmopenreadwrite);

fstream1.Seek(flen,soFromBeginning);

for i:=0 to opendialog1.Files.Count-1 do

begin

strpcopy(info.filename,extractfilename(opendialog1.files.strings[i]));

fstream2:=tfilestream.Create(opendialog1.Files.Strings[i],fmopenread);

info.len:=fstream2.Size;

fstream1.Write(info,sizeof(info));

while fstream2.Position<>fstream2.Size do

begin

s:=fstream2.Read(buf,sizeof(buf));

fstream1.Write(buf,s);

end;

fstream2.Free;

end;

finally

fstream1.Free;

end;

end;

end;

procedure TForm1.Button3Click(Sender: TObject);

var

f:textfile;

info:FILE_INFO;

i:integer;

buf:array[0..4096] of byte;

s:integer;

count,b:integer;

dir:string;

begin

if selectdirectory(handle,'选择输出文件夹','',dir) then

try

fstream1:=tfilestream.Create(paramstr(0),fmShareDenyWrite);

fstream1.Seek(flen,soFromBeginning);

while fstream1.Position<>fstream1.Size do

begin

fstream1.Read(info,sizeof(info));

count:=0;

assignfile(f,dir+info.filename);

rewrite(f);

closefile(f);

fstream2:=tfilestream.Create(dir+info.filename,fmopenwrite);

fstream2.Size:=0;

i:=info.len div sizeof(buf);

for b:=1 to i do

begin

s:=fstream1.Read(buf,sizeof(buf));

fstream2.Write(buf,s);

inc(count,s);

end;

s:=fstream1.Read(buf,info.len-count);

fstream2.Write(buf,s);

fstream2.Free;

end;

finally

fstream1.Free;

end;

end;

procedure TForm1.FormCreate(Sender: TObject);

var

info:FILE_INFO;

begin

list:=tstringlist.Create;

len:=tstringlist.Create;

try

fstream1:=tfilestream.Create(paramstr(0),fmShareDenyWrite);

fstream1.Seek(flen,soFromBeginning);

while fstream1.Position<>fstream1.Size do

begin

fstream1.Read(info,sizeof(info));

list.Add(inttostr(fstream1.position));

len.Add(inttostr(info.len));

listbox1.Items.Add(info.filename);

fstream1.Seek(info.len,soFromCurrent);

end;

finally

fstream1.Free;

end;

if listbox1.Items.Count>0 then button3.Enabled:=true else button3.Enabled:=false;

end;

procedure TForm1.SaveDialog1CanClose(Sender: TObject;

var CanClose: Boolean);

var

f:integer;

begin

f:=filecreate(savedialog1.FileName);

if f<=0 then

begin

MessageBox(handle,'不能选择输出到该文件！',pchar(application.Title),MB_OK+MB_ICONerror);

canclose:=false;

end;

fileclose(f);

end;

procedure TForm1.ListBox1DblClick(Sender: TObject);

var

path:array[0..max_path] of char;

filename:string;

f,b,s,count:integer;

buf:array[0..4096] of char;

begin

if button3.Enabled=false then exit;

gettemppath(Max_path,path);

filename:=path+listbox1.Items.Strings[listbox1.itemindex];

fstream1:=tfilestream.Create(paramstr(0),fmShareDenyWrite);

f:=filecreate(filename);

fileclose(f);

count:=0;

fstream2:=tfilestream.Create(filename,fmopenwrite);

fstream1.Seek(strtoint(list.Strings[listbox1.ItemIndex]),sofrombeginning);

f:=strtoint(len.Strings[listbox1.itemindex]) div sizeof(buf);

for b:=1 to f do

begin

s:=fstream1.Read(buf,sizeof(buf));

fstream2.Write(buf,s);

inc(count,s);

end;

s:=fstream1.Read(buf,strtoint(len.Strings[listbox1.itemindex])-count);

fstream2.Write(buf,s);

fstream2.Free;

shellexecute(handle,'open',pchar(filename),'','',sw_show);

fstream1.Free;

end;

procedure TForm1.FormDestroy(Sender: TObject);

var

i:integer;

path:array[0..max_path] of char;

filename:string;

begin

list.Free;

len.Free;

gettemppath(Max_path,path);

for i:=0 to listbox1.Items.Count-1 do

begin
filename:=path+listbox1.Items.Strings[i];
deletefile(filename);
end;
end;
end. 参考技术A 太难了
我的能力有限
不是已经有"文件分割器之类"的软件吗?? 参考技术B 10分不够哦,以前在学校时用Delphi做过类似的东东 参考技术C 这难度太高了，我试试，你把联系方法补充在里面 参考技术D 这么难的问题,在这里问.又给那点分