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1 | // -*- mode: cpp; mode: fold -*- |
2 | // Description /*{{{*/ | |
f08fcf34 | 3 | // $Id: fileutl.h,v 1.24 2001/03/03 22:36:20 tausq Exp $ |
578bfd0a AL |
4 | /* ###################################################################### |
5 | ||
6 | File Utilities | |
7 | ||
8 | CopyFile - Buffered copy of a single file | |
9 | GetLock - dpkg compatible lock file manipulation (fcntl) | |
10 | FileExists - Returns true if the file exists | |
11 | SafeGetCWD - Returns the CWD in a string with overrun protection | |
12 | ||
13 | The file class is a handy abstraction for various functions+classes | |
14 | that need to accept filenames. | |
15 | ||
16 | This source is placed in the Public Domain, do with it what you will | |
17 | It was originally written by Jason Gunthorpe. | |
18 | ||
19 | ##################################################################### */ | |
20 | /*}}}*/ | |
578bfd0a AL |
21 | #ifndef PKGLIB_FILEUTL_H |
22 | #define PKGLIB_FILEUTL_H | |
23 | ||
6c139d6e | 24 | #ifdef __GNUG__ |
094a497d | 25 | #pragma interface "apt-pkg/fileutl.h" |
6c139d6e AL |
26 | #endif |
27 | ||
578bfd0a AL |
28 | #include <string> |
29 | ||
8e06abb2 | 30 | class FileFd |
578bfd0a AL |
31 | { |
32 | protected: | |
33 | int iFd; | |
34 | ||
ddc1d8d0 AL |
35 | enum LocalFlags {AutoClose = (1<<0),Fail = (1<<1),DelOnFail = (1<<2), |
36 | HitEof = (1<<3)}; | |
578bfd0a AL |
37 | unsigned long Flags; |
38 | string FileName; | |
39 | ||
40 | public: | |
f08fcf34 | 41 | enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp}; |
578bfd0a | 42 | |
ddc1d8d0 | 43 | bool Read(void *To,unsigned long Size,bool AllowEof = false); |
a05599f1 | 44 | bool Write(const void *From,unsigned long Size); |
578bfd0a | 45 | bool Seek(unsigned long To); |
727f18af | 46 | bool Skip(unsigned long To); |
6d5dd02a | 47 | bool Truncate(unsigned long To); |
7f25bdff | 48 | unsigned long Tell(); |
578bfd0a | 49 | unsigned long Size(); |
13d87e2e | 50 | bool Open(string FileName,OpenMode Mode,unsigned long Perms = 0666); |
578bfd0a | 51 | bool Close(); |
b2e465d6 AL |
52 | bool Sync(); |
53 | ||
578bfd0a AL |
54 | // Simple manipulators |
55 | inline int Fd() {return iFd;}; | |
869f717a | 56 | inline void Fd(int fd) {iFd = fd;}; |
578bfd0a AL |
57 | inline bool IsOpen() {return iFd >= 0;}; |
58 | inline bool Failed() {return (Flags & Fail) == Fail;}; | |
59 | inline void EraseOnFailure() {Flags |= DelOnFail;}; | |
60 | inline void OpFail() {Flags |= Fail;}; | |
ddc1d8d0 | 61 | inline bool Eof() {return (Flags & HitEof) == HitEof;}; |
c7b5ce1c AL |
62 | inline string &Name() {return FileName;}; |
63 | ||
13d87e2e AL |
64 | FileFd(string FileName,OpenMode Mode,unsigned long Perms = 0666) : iFd(-1), |
65 | Flags(0) | |
66 | { | |
67 | Open(FileName,Mode,Perms); | |
68 | }; | |
36375005 | 69 | FileFd(int Fd = -1) : iFd(Fd), Flags(AutoClose) {}; |
8e06abb2 AL |
70 | FileFd(int Fd,bool) : iFd(Fd), Flags(0) {}; |
71 | virtual ~FileFd(); | |
578bfd0a AL |
72 | }; |
73 | ||
8b89e57f | 74 | bool CopyFile(FileFd &From,FileFd &To); |
578bfd0a AL |
75 | int GetLock(string File,bool Errors = true); |
76 | bool FileExists(string File); | |
77 | string SafeGetCWD(); | |
3b5421b4 AL |
78 | void SetCloseExec(int Fd,bool Close); |
79 | void SetNonBlock(int Fd,bool Block); | |
1084d58a | 80 | bool WaitFd(int Fd,bool write = false,unsigned long timeout = 0); |
54676e1a | 81 | int ExecFork(); |
ddc1d8d0 | 82 | bool ExecWait(int Pid,const char *Name,bool Reap = false); |
578bfd0a | 83 | |
8ce4327b AL |
84 | // File string manipulators |
85 | string flNotDir(string File); | |
d38b7b3d | 86 | string flNotFile(string File); |
421c8d10 | 87 | string flNoLink(string File); |
b2e465d6 AL |
88 | string flExtension(string File); |
89 | string flCombine(string Dir,string File); | |
8ce4327b | 90 | |
578bfd0a | 91 | #endif |