商业编程-源码-文件分割代码.zip

//////////////////////////////////////////// // // module: 核心模块状 // date : 24/03/2005 // copyright: 1.0 // author: 晏丹强 //////////////////////////////////////////// #include<windows.h> #include<string.h> #include<shellapi.h> #include<shlobj.h> #include"tool.h" #include"resource.h" HWND hwndprocess; bool lsroot(LPCTSTR lpszPath)//////////确定是否是根目录 { TCHAR szRoot[4]; wsprintf(szRoot,"%c:\\\0",lpszPath[0]); return (lstrcmp(szRoot,lpszPath)==0); } LPTSTR DoOpenDir(HWND hwnd)///////打开目录对话框架 { static char tempdir[256]="c:"; LPMALLOC lpMalloc; LPTSTR tt=tempdir; if(SHGetMalloc(&lpMalloc)!=NOERROR) { MessageBox(0,"初始化失败","error",0); return tt=NULL; } BROWSEINFO brow; memset(&brow,0,sizeof(brow)); brow.hwndOwner=hwnd; brow.pidlRoot=NULL; brow.pszDisplayName=tempdir; brow.ulFlags=BIF_RETURNFSANCESTORS|BIF_RETURNONLYFSDIRS; brow.lpfn=NULL; brow.lParam=0; LPITEMIDLIST lpItem; if((lpItem=::SHBrowseForFolder(&brow))!=NULL) { if(SHGetPathFromIDList(lpItem,tt)) return tt; else MessageBox(0,"打开目录失败","error",0); lpMalloc->Free(lpItem); lpMalloc->Release (); } return tt=NULL; } LPTSTR OpenFindFile(HWND hwnd,BOOL jorc)///////////打开文件对话框 { OPENFILENAME File; static char filepath[256]="ydq"; LPTSTR tempdir=filepath; ZeroMemory(&File,sizeof(File)); File.lStructSize=sizeof(File); File.Flags=OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST; File.hwndOwner=hwnd; if(jorc==TRUE)///判断是打开目录还是文件 File.lpstrFilter="All Files (*.*)\0*.*\0"; else File.lpstrFilter="All Files (*.join)\0*.join\0"; File.nFilterIndex=1; File.lpstrFile=filepath; File.nMaxFile=sizeof(filepath); if(GetOpenFileName(&File)) { return tempdir; } else return tempdir=NULL; } /////////////////////分割文件涵数 void Split(LPTSTR filename,LPTSTR SavePath,DWORD SplitByte) { HANDLE handle; DWORD dw,bytedw,filesize; FILEINFO fileinfo; DWORD backbyte; int SplitNum; int i,len; static BYTE *lpdata,*data; char temppath[256]; char tempnum[2]; ///////////////////////////////////////////////////////// handle=CreateFile(filename,GENERIC_READ,FILE_SHARE_READ, 0,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); if(handle==INVALID_HANDLE_VALUE) { MessageBox(0,"打开文件错误","split",0); return ; } filesize=GetFileSize(handle,&bytedw); SplitNum=filesize/SplitByte;///求得分割数量 backbyte=filesize%SplitByte;///剩余字节 lpdata=data=new BYTE[filesize]; if(lpdata==NULL)MessageBox(0,"申请空间失败","split",0); ReadFile(handle,lpdata,filesize,&dw,0); CloseHandle(handle); if(filesize%SplitByte!=0) SplitNum+=1; //////////////////////////////////////循环写分割文件 for(i=0;i<SplitNum;i++) { strcpy(temppath,SavePath); if(lsroot(SavePath)==0) strcat(temppath,"\\part"); else strcat(temppath,"part"); wsprintf(tempnum,"%d",i+1); strcat(temppath,tempnum); strcat(temppath,".dat"); if(i==SplitNum-1&&filesize%SplitByte!=0) { handle=CreateFile(temppath,GENERIC_WRITE,FILE_SHARE_READ| FILE_SHARE_WRITE, 0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); WriteFile(handle,data,backbyte,&dw,0); CloseHandle(handle); } else { handle=CreateFile(temppath,GENERIC_WRITE,FILE_SHARE_READ, 0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); WriteFile(handle,data,SplitByte,&dw,0); CloseHandle(handle); data+=SplitByte; } } ////////////写文件信息 len=strlen(filename); for( i=len;i>0;i--) { if(filename[i]=='\\') break; } filename+=i+1; strcpy(fileinfo.ResouFileName,filename); fileinfo.TotalByte =filesize; fileinfo.FileNum =SplitNum; dw=sizeof(FILEINFO); if(lsroot(SavePath)==0) strcat(SavePath,"\\"); strcat(filename,".join"); strcat(SavePath,filename); handle=CreateFile(SavePath,GENERIC_WRITE,FILE_SHARE_READ| FILE_SHARE_WRITE, 0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); WriteFile(handle,&fileinfo,sizeof(FILEINFO),&dw,0); CloseHandle(handle); delete []lpdata; lpdata=NULL; MessageBox(0,"分割完成","split",0); } //////////////////////////////合并文件涵数 void Join(LPTSTR filename,LPTSTR savepath) { HANDLE handle; DWORD dw; DWORD filesize; DWORD TotalSize; LPTSTR templp=filename; FILEINFO file; BYTE *lpdata,*data,*joindata; int j,filenum,num; int filestrlen; char resname[256]={0}; char pathtemp[10]="part"; char numchar[2]; char temppath[256]={0}; handle=CreateFile(filename,GENERIC_READ,FILE_SHARE_READ| FILE_SHARE_WRITE, 0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0); ReadFile(handle,(FILEINFO*)&file,sizeof(FILEINFO),&dw,0); filenum=file.FileNum ; strcpy(resname,file.ResouFileName); TotalSize=file.TotalByte; filestrlen=strlen(filename); strcpy(temppath,filename); lpdata=data=new BYTE[TotalSize]; if(lpdata==NULL)MessageBox(0,"申请空间出错","split",0); CloseHandle(handle); //////////////////////////////////////////////////////// for(;filestrlen>0;filestrlen--) if(filename[filestrlen]=='\\') break; filestrlen+=1;///获得文件的文件名 filename+=filestrlen; for(j=0;j<filenum;j++) { strcpy(filename,pathtemp); wsprintf(numchar,"%d",j+1); strcat(filename,numchar); strcat(filename,".dat"); handle=CreateFile(templp,GENERIC_READ,FILE_SHARE_READ, 0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0); filesize=GetFileSize(handle,&dw); joindata=new BYTE[filesize]; if(joindata==NULL)MessageBox(0,"申请空间出错","split",0); ReadFile(handle,joindata,filesize,&dw,0); memcpy(data,joindata,filesize); ////////////////连接内存数据 data+=filesize; CloseHandle(handle); delete []joindata; } if(!lsroot(savepath)) strcat(savepath,"\\"); strcat(savepath,resname); handle=CreateFile(savepath,GENERIC_WRITE,FILE_SHARE_READ, 0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); WriteFile(handle,lpdata,TotalSize,&dw,0); delete []lpdata; lpdata=NULL; CloseHandle(handle); MessageBox(0,"合并文件成功","split",0); }