59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
// This file is part of the uSTL library, an STL implementation.
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//
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// Copyright (c) 2005 by Mike Sharov <msharov@users.sourceforge.net>
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// This file is free software, distributed under the MIT License.
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#pragma once
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#include "uios.h"
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#include "ustring.h"
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namespace ustl {
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/// \class fstream fstream.h ustl.h
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/// \ingroup DeviceStreams
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///
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/// \brief Implements file operations.
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///
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/// This is not implemented as a stream, but rather as a base for one. You
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/// should use ifstream or ofstream if you want flow operators. Otherwise
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/// this only implements functions for binary i/o.
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///
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class fstream : public ios_base {
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public:
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fstream (void) noexcept;
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explicit fstream (const char* filename, openmode mode = in | out);
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explicit fstream (int nfd, const char* filename = "");
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~fstream (void) noexcept;
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void open (const char* filename, openmode mode, mode_t perms = 0644);
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void attach (int nfd, const char* filename = "");
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void detach (void) noexcept;
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void close (void);
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void sync (void);
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off_t read (void* p, off_t n);
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off_t readsome (void* p, off_t n);
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off_t write (const void* p, off_t n);
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off_t size (void) const;
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off_t seek (off_t n, seekdir whence = beg);
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off_t pos (void) const noexcept;
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inline int fd (void) const { return (m_fd); }
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inline bool is_open (void) const { return (fd() >= 0); }
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inline off_t tellg (void) const { return (pos()); }
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inline off_t tellp (void) const { return (pos()); }
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inline void seekg (off_t n, seekdir whence = beg) { seek (n, whence); }
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inline void seekp (off_t n, seekdir whence = beg) { seek (n, whence); }
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inline void flush (void) { sync(); }
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inline const string& name (void) const { return (m_Filename); }
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private:
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DLL_LOCAL static int om_to_flags (openmode m) noexcept;
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DLL_LOCAL void set_and_throw (iostate s, const char* op);
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private:
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int m_fd; ///< Currently open file descriptor.
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string m_Filename; ///< Currently open filename.
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};
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/// Argument macro for fstream::ioctl. Use like fs.ioctl (IOCTLID (TCGETS), &ts).
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#define IOCTLID(r) "ioctl("#r")", r
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#define FCNTLID(r) "fcntl("#r")", r
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} // namespace ustl
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