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- // -*- mode: cpp; mode: fold -*-
- // Description /*{{{*/
- // $Id: fileutl.h,v 1.26 2001/05/07 05:06:52 jgg Exp $
- /* ######################################################################
-
- File Utilities
-
- CopyFile - Buffered copy of a single file
- GetLock - dpkg compatible lock file manipulation (fcntl)
- FileExists - Returns true if the file exists
- SafeGetCWD - Returns the CWD in a string with overrun protection
-
- The file class is a handy abstraction for various functions+classes
- that need to accept filenames.
-
- This source is placed in the Public Domain, do with it what you will
- It was originally written by Jason Gunthorpe.
-
- ##################################################################### */
- /*}}}*/
- #ifndef PKGLIB_FILEUTL_H
- #define PKGLIB_FILEUTL_H
- #include <string>
- #include <vector>
- using std::string;
- class FileFd
- {
- protected:
- int iFd;
-
- enum LocalFlags {AutoClose = (1<<0),Fail = (1<<1),DelOnFail = (1<<2),
- HitEof = (1<<3)};
- unsigned long Flags;
- string FileName;
-
- public:
- enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp};
-
- inline bool Read(void *To,unsigned long Size,bool AllowEof)
- {
- unsigned long Jnk;
- if (AllowEof)
- return Read(To,Size,&Jnk);
- return Read(To,Size);
- }
- bool Read(void *To,unsigned long Size,unsigned long *Actual = 0);
- bool Write(const void *From,unsigned long Size);
- bool Seek(unsigned long To);
- bool Skip(unsigned long To);
- bool Truncate(unsigned long To);
- unsigned long Tell();
- unsigned long Size();
- bool Open(string FileName,OpenMode Mode,unsigned long Perms = 0666);
- bool Close();
- bool Sync();
-
- // Simple manipulators
- inline int Fd() {return iFd;};
- inline void Fd(int fd) {iFd = fd;};
- inline bool IsOpen() {return iFd >= 0;};
- inline bool Failed() {return (Flags & Fail) == Fail;};
- inline void EraseOnFailure() {Flags |= DelOnFail;};
- inline void OpFail() {Flags |= Fail;};
- inline bool Eof() {return (Flags & HitEof) == HitEof;};
- inline string &Name() {return FileName;};
-
- FileFd(string FileName,OpenMode Mode,unsigned long Perms = 0666) : iFd(-1),
- Flags(0)
- {
- Open(FileName,Mode,Perms);
- };
- FileFd(int Fd = -1) : iFd(Fd), Flags(AutoClose) {};
- FileFd(int Fd,bool) : iFd(Fd), Flags(0) {};
- virtual ~FileFd();
- };
- bool RunScripts(const char *Cnf);
- bool CopyFile(FileFd &From,FileFd &To);
- int GetLock(string File,bool Errors = true);
- bool FileExists(string File);
- // FIXME: next ABI-Break: merge the two method-headers
- std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
- bool const &SortList);
- std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
- bool const &SortList, bool const &AllowNoExt);
- std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> const &Ext,
- bool const &SortList);
- string SafeGetCWD();
- void SetCloseExec(int Fd,bool Close);
- void SetNonBlock(int Fd,bool Block);
- bool WaitFd(int Fd,bool write = false,unsigned long timeout = 0);
- pid_t ExecFork();
- bool ExecWait(pid_t Pid,const char *Name,bool Reap = false);
- // File string manipulators
- string flNotDir(string File);
- string flNotFile(string File);
- string flNoLink(string File);
- string flExtension(string File);
- string flCombine(string Dir,string File);
- #endif
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