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view liboctave/system/file-stat.h @ 22868:87e3163f6c87
use c++11 "= default" syntax for declaration of trivial destructors
* make_int.cc, Canvas.h, GenericEventNotify.h, TextEdit.h, gl-select.h, QTerminal.h, files-dock-widget.h, history-dock-widget.h, octave-cmd.h, octave-dock-widget.h, octave-interpreter.h, thread-manager.h, welcome-wizard.h, workspace-model.h, workspace-view.h, base-text-renderer.h, comment-list.h, debug.h, dynamic-ld.cc, dynamic-ld.h, ft-text-renderer.cc, gl-render.h, gl2ps-print.cc, graphics.in.h, hook-fcn.h, input.h, load-path.h, mxarray.in.h, oct-errno.h, oct-fstrm.h, oct-handle.h, oct-iostrm.h, oct-lvalue.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, pr-output.cc, procstream.h, sighandlers.cc, symtab.h, text-renderer.h, txt-eng.h, variables.cc, workspace-element.h, __init_fltk__.cc, __init_gnuplot__.cc, ov-base-diag.h, ov-base-int.h, ov-base-scalar.h, ov-base-sparse.h, ov-base.h, ov-bool-mat.h, ov-bool-sparse.h, ov-bool.h, ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h, ov-fcn-handle.h, ov-fcn-inline.h, ov-fcn.h, ov-float.h, ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h, ov-flt-re-diag.h, ov-flt-re-mat.h, ov-intx.h, ov-lazy-idx.h, ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h, ov-str-mat.h, ov-struct.h, ov-typeinfo.h, ov-usr-fcn.h, ovl.h, octave.h, lex.h, parse.h, pt-binop.h, pt-bp.h, pt-cell.h, pt-check.h, pt-classdef.h, pt-cmd.h, pt-const.h, pt-decl.h, pt-eval.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h, pt-id.h, pt-jump.h, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.h, pt-pr-code.h, pt-unop.h, pt-walk.h, pt.h, DiagArray2.h, MArray.h, MDiagArray2.h, MSparse.h, idx-vector.h, quit.h, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h, DAERTFunc.h, DASPK.h, DASRT.h, DASSL.h, EIG.h, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h, aepbalance.h, base-dae.h, base-de.h, base-min.h, fEIG.h, gepbalance.h, gsvd.h, hess.h, lu.h, oct-rand.h, oct-spparms.h, qr.h, qrp.h, schur.h, sparse-lu.h, svd.h, child-list.h, file-stat.h, oct-passwd.h, oct-time.h, oct-uname.h, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, glob-match.h, lo-array-errwarn.h, lo-regexp.h, oct-mutex.h, pathsearch.h, str-vec.h, url-transfer.h:
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 06 Dec 2016 10:59:29 -0500 |
parents | 3a2b891d0b33 |
children | ef4d915df748 |
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/* Copyright (C) 1996-2016 John W. Eaton This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #if ! defined (octave_file_stat_h) #define octave_file_stat_h 1 #include "octave-config.h" #include <string> #include "oct-time.h" #include <sys/types.h> namespace octave { namespace sys { class OCTAVE_API base_file_stat { public: base_file_stat (void) : initialized (false), fail (false), errmsg (), m_mode (), m_ino (), m_dev (), m_nlink (), m_uid (), m_gid (), m_size (), m_atime (), m_mtime (), m_ctime (), m_rdev (), m_blksize (), m_blocks () { } base_file_stat (const base_file_stat& fs) : initialized (fs.initialized), fail (fs.fail), errmsg (fs.errmsg), m_mode (fs.m_mode), m_ino (fs.m_ino), m_dev (fs.m_dev), m_nlink (fs.m_nlink), m_uid (fs.m_uid), m_gid (fs.m_gid), m_size (fs.m_size), m_atime (fs.m_atime), m_mtime (fs.m_mtime), m_ctime (fs.m_ctime), m_rdev (fs.m_rdev), m_blksize (fs.m_blksize), m_blocks (fs.m_blocks) { } base_file_stat& operator = (const base_file_stat& fs) { if (this != &fs) { initialized = fs.initialized; fail = fs.fail; errmsg = fs.errmsg; m_mode = fs.m_mode; m_ino = fs.m_ino; m_dev = fs.m_dev; m_nlink = fs.m_nlink; m_uid = fs.m_uid; m_gid = fs.m_gid; m_size = fs.m_size; m_atime = fs.m_atime; m_mtime = fs.m_mtime; m_ctime = fs.m_ctime; m_rdev = fs.m_rdev; m_blksize = fs.m_blksize; m_blocks = fs.m_blocks; } return *this; } // The minimum difference in file time stamp values. // FIXME: This value should come from the filesystem itself. // How can we get that info? octave::sys::time time_resolution (void) const { static octave::sys::time resolution (1.0); return resolution; } // File status and info. The is_XXX functions will return false for // file_stat objects that are not properly initialized. The others // should all return 0 (or the equivalent, for the given object) // which is likely not meaningful. bool is_blk (void) const; bool is_chr (void) const; bool is_dir (void) const; bool is_fifo (void) const; bool is_lnk (void) const; bool is_reg (void) const; bool is_sock (void) const; static bool is_blk (mode_t mode); static bool is_chr (mode_t mode); static bool is_dir (mode_t mode); static bool is_fifo (mode_t mode); static bool is_lnk (mode_t mode); static bool is_reg (mode_t mode); static bool is_sock (mode_t mode); static bool have_struct_stat_st_rdev (void); static bool have_struct_stat_st_blksize (void); static bool have_struct_stat_st_blocks (void); ino_t ino (void) const { return m_ino; } dev_t dev (void) const { return m_dev; } nlink_t nlink (void) const { return m_nlink; } uid_t uid (void) const { return m_uid; } gid_t gid (void) const { return m_gid; } off_t size (void) const { return m_size; } octave::sys::time atime (void) const { return m_atime; } octave::sys::time mtime (void) const { return m_mtime; } octave::sys::time ctime (void) const { return m_ctime; } dev_t rdev (void) const { return m_rdev; } long blksize (void) const { return m_blksize; } long blocks (void) const { return m_blocks; } mode_t mode (void) const { return m_mode; } std::string mode_as_string (void) const; bool ok (void) const { return initialized && ! fail; } operator bool () const { return ok (); } bool exists (void) const { return ok (); } std::string error (void) const { return ok () ? "" : errmsg; } // Has the file referenced by this object been modified since TIME? bool is_newer (const octave::sys::time& time) const { return m_mtime > time; } // It's nice to be able to hide the file_stat object if we don't // really care about it. static int is_newer (const std::string&, const octave::sys::time&); protected: virtual ~base_file_stat (void) = default; // TRUE means we have already called stat. bool initialized; // TRUE means the stat for this file failed. bool fail; // If a failure occurs, this contains the system error text. std::string errmsg; // file type and permissions mode_t m_mode; // serial number ino_t m_ino; // device number dev_t m_dev; // number of links nlink_t m_nlink; // user ID of owner uid_t m_uid; // group ID of owner gid_t m_gid; // size in bytes, for regular files off_t m_size; // time of last access octave::sys::time m_atime; // time of last modification octave::sys::time m_mtime; // time of last file status change octave::sys::time m_ctime; // device number for special files dev_t m_rdev; // best I/O block size long m_blksize; // number of 512-byte blocks allocated long m_blocks; }; class OCTAVE_API file_stat : public base_file_stat { public: file_stat (const std::string& n = "", bool fl = true) : base_file_stat (), file_name (n), follow_links (fl) { if (! file_name.empty ()) update_internal (); } file_stat (const file_stat& fs) : base_file_stat (fs), file_name (fs.file_name), follow_links (fs.follow_links) { } file_stat& operator = (const file_stat& fs) { if (this != &fs) { base_file_stat::operator = (fs); file_name = fs.file_name; follow_links = fs.follow_links; } return *this; } ~file_stat (void) = default; void get_stats (bool force = false) { if (! initialized || force) update_internal (force); } void get_stats (const std::string& n, bool force = false) { if (n != file_name || ! initialized || force) { initialized = false; file_name = n; update_internal (force); } } private: // Name of the file. std::string file_name; // TRUE means follow symbolic links to the ultimate file (stat). // FALSE means get information about the link itself (lstat). bool follow_links; void update_internal (bool force = false); }; class OCTAVE_API file_fstat : public base_file_stat { public: file_fstat (int n) : base_file_stat (), fid (n) { update_internal (); } file_fstat (const file_fstat& fs) : base_file_stat (fs), fid (fs.fid) { } file_fstat& operator = (const file_fstat& fs) { if (this != &fs) { base_file_stat::operator = (fs); fid = fs.fid; } return *this; } ~file_fstat (void) = default; void get_stats (bool force = false) { if (! initialized || force) update_internal (force); } void get_stats (int n, bool force = false) { if (n != fid || ! initialized || force) { initialized = false; fid = n; update_internal (force); } } private: // Open file descriptor. int fid; void update_internal (bool force = false); }; } } #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) OCTAVE_DEPRECATED ("use 'octave::sys::base_file_stat' instead") typedef octave::sys::base_file_stat base_file_stat; OCTAVE_DEPRECATED ("use 'octave::sys::file_stat' instead") typedef octave::sys::file_stat file_stat; OCTAVE_DEPRECATED ("use 'octave::sys::file_fstat' instead") typedef octave::sys::file_fstat file_fstat; #endif #endif