X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/46e39c8e14dc98045107cfb38af8cecb8a4773b0..0d29b9d4368284782862c7b507c47002b79ddb27:/apt-pkg/contrib/fileutl.h diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h index 2807c29d9..fb01531fd 100644 --- a/apt-pkg/contrib/fileutl.h +++ b/apt-pkg/contrib/fileutl.h @@ -21,81 +21,186 @@ #ifndef PKGLIB_FILEUTL_H #define PKGLIB_FILEUTL_H +#include +#include #include #include +#include +#include +#include + +#ifndef APT_8_CLEANER_HEADERS using std::string; +#endif +/* Define this for python-apt */ +#define APT_HAS_GZIP 1 + +class FileFdPrivate; class FileFd { protected: int iFd; enum LocalFlags {AutoClose = (1<<0),Fail = (1<<1),DelOnFail = (1<<2), - HitEof = (1<<3)}; + HitEof = (1<<3), Replace = (1<<4), Compressed = (1<<5) }; unsigned long Flags; - string FileName; - + std::string FileName; + std::string TemporaryFileName; + public: - enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp}; + enum OpenMode { + ReadOnly = (1 << 0), + WriteOnly = (1 << 1), + ReadWrite = ReadOnly | WriteOnly, + + Create = (1 << 2), + Exclusive = (1 << 3), + Atomic = Exclusive | (1 << 4), + Empty = (1 << 5), + + WriteEmpty = ReadWrite | Create | Empty, + WriteExists = ReadWrite, + WriteAny = ReadWrite | Create, + WriteTemp = ReadWrite | Create | Exclusive, + ReadOnlyGzip, + WriteAtomic = ReadWrite | Create | Atomic + }; + enum CompressMode { Auto = 'A', None = 'N', Extension = 'E', Gzip = 'G', Bzip2 = 'B', Lzma = 'L', Xz = 'X' }; - inline bool Read(void *To,unsigned long Size,bool AllowEof) + inline bool Read(void *To,unsigned long long Size,bool AllowEof) { - unsigned long Jnk; + unsigned long 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 Read(void *To,unsigned long long Size,unsigned long long *Actual = 0); + char* ReadLine(char *To, unsigned long long const Size); + bool Write(const void *From,unsigned long long Size); + bool static Write(int Fd, const void *From, unsigned long long Size); + bool Seek(unsigned long long To); + bool Skip(unsigned long long To); + bool Truncate(unsigned long long To); + unsigned long long Tell(); + unsigned long long Size(); + unsigned long long FileSize(); + time_t ModificationTime(); + + /* You want to use 'unsigned long long' if you are talking about a file + to be able to support large files (>2 or >4 GB) properly. + This shouldn't happen all to often for the indexes, but deb's might be… + And as the auto-conversation converts a 'unsigned long *' to a 'bool' + instead of 'unsigned long long *' we need to provide this explicitely - + otherwise applications magically start to fail… */ + bool Read(void *To,unsigned long long Size,unsigned long *Actual) APT_DEPRECATED + { + unsigned long long R; + bool const T = Read(To, Size, &R); + *Actual = R; + return T; + } + + bool Open(std::string FileName,unsigned int const Mode,CompressMode Compress,unsigned long const AccessMode = 0666); + bool Open(std::string FileName,unsigned int const Mode,APT::Configuration::Compressor const &compressor,unsigned long const AccessMode = 0666); + inline bool Open(std::string const &FileName,unsigned int const Mode, unsigned long const AccessMode = 0666) { + return Open(FileName, Mode, None, AccessMode); + }; + bool OpenDescriptor(int Fd, unsigned int const Mode, CompressMode Compress, bool AutoClose=false); + bool OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration::Compressor const &compressor, bool AutoClose=false); + inline bool OpenDescriptor(int Fd, unsigned int const Mode, bool AutoClose=false) { + return OpenDescriptor(Fd, Mode, None, AutoClose); + }; bool Close(); bool Sync(); // Simple manipulators inline int Fd() {return iFd;}; - inline void Fd(int fd) {iFd = fd;}; + inline void Fd(int fd) { OpenDescriptor(fd, ReadWrite);}; + gzFile gzFd() APT_DEPRECATED APT_PURE; + 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;}; + inline bool IsCompressed() {return (Flags & Compressed) == Compressed;}; + inline std::string &Name() {return FileName;}; - FileFd(string FileName,OpenMode Mode,unsigned long Perms = 0666) : iFd(-1), - Flags(0) + FileFd(std::string FileName,unsigned int const Mode,unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL) + { + Open(FileName,Mode, None, AccessMode); + }; + FileFd(std::string FileName,unsigned int const Mode, CompressMode Compress, unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL) + { + Open(FileName,Mode, Compress, AccessMode); + }; + FileFd() : iFd(-1), Flags(AutoClose), d(NULL) {}; + FileFd(int const Fd, unsigned int const Mode = ReadWrite, CompressMode Compress = None) : iFd(-1), Flags(0), d(NULL) + { + OpenDescriptor(Fd, Mode, Compress); + }; + FileFd(int const Fd, bool const AutoClose) : iFd(-1), Flags(0), d(NULL) { - Open(FileName,Mode,Perms); + OpenDescriptor(Fd, ReadWrite, None, AutoClose); }; - FileFd(int Fd = -1) : iFd(Fd), Flags(AutoClose) {}; - FileFd(int Fd,bool) : iFd(Fd), Flags(0) {}; virtual ~FileFd(); + + private: + FileFdPrivate* d; + APT_HIDDEN bool OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor); + + // private helpers to set Fail flag and call _error->Error + APT_HIDDEN bool FileFdErrno(const char* Function, const char* Description,...) APT_PRINTF(3) APT_COLD; + APT_HIDDEN bool FileFdError(const char* Description,...) APT_PRINTF(2) APT_COLD; }; bool RunScripts(const char *Cnf); bool CopyFile(FileFd &From,FileFd &To); -int GetLock(string File,bool Errors = true); -bool FileExists(string File); -std::vector GetListOfFilesInDir(string const &Dir, string const &Ext, +int GetLock(std::string File,bool Errors = true); +bool FileExists(std::string File); +bool RealFileExists(std::string File); +bool DirectoryExists(std::string const &Path) APT_CONST; +bool CreateDirectory(std::string const &Parent, std::string const &Path); +time_t GetModificationTime(std::string const &Path); +bool Rename(std::string From, std::string To); + +std::string GetTempDir(); +FileFd* GetTempFile(std::string const &Prefix = "", + bool ImmediateUnlink = true); + +/** \brief Ensure the existence of the given Path + * + * \param Parent directory of the Path directory - a trailing + * /apt/ will be removed before CreateDirectory call. + * \param Path which should exist after (successful) call + */ +bool CreateAPTDirectoryIfNeeded(std::string const &Parent, std::string const &Path); + +std::vector GetListOfFilesInDir(std::string const &Dir, std::string const &Ext, + bool const &SortList, bool const &AllowNoExt=false); +std::vector GetListOfFilesInDir(std::string const &Dir, std::vector const &Ext, bool const &SortList); -string SafeGetCWD(); +std::vector GetListOfFilesInDir(std::string const &Dir, bool SortList); +std::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(); +pid_t ExecFork(std::set keep_fds); +void MergeKeepFdsFromConfiguration(std::set &keep_fds); 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); +std::string flNotDir(std::string File); +std::string flNotFile(std::string File); +std::string flNoLink(std::string File); +std::string flExtension(std::string File); +std::string flCombine(std::string Dir,std::string File); + +// simple c++ glob +std::vector Glob(std::string const &pattern, int flags=0); #endif