Mercurial > octave
annotate liboctave/system/file-stat.h @ 31605:e88a07dec498 stable
maint: Use macros to begin/end C++ namespaces.
* oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE,
OCTAVE_END_NAMESPACE) that can be used to start/end a namespace.
* mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc,
__dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc,
__ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc,
__magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc,
auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h,
besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc,
colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc,
defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc,
display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc,
ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h,
event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc,
fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc,
ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc,
getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc,
gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc,
graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc,
help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h,
interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h,
inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc,
ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h,
mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc,
oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h,
oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h,
oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h,
oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy,
ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc,
pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc,
qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h,
sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc,
sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h,
stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc,
symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h,
symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h,
text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc,
toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc,
url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc,
variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h,
__delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc,
audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh,
mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc,
cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h,
cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h,
cdef-utils.cc, cdef-utils.h, ov-base.cc, ov-base.h, ov-bool-mat.cc,
ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc,
ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h,
ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc,
ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h,
ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc,
op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc,
op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc,
op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc,
op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc,
op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc,
op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc,
op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc,
op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc,
op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc,
op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc,
op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc,
op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc,
op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc,
op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc,
op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc,
op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc,
op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h,
anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h,
comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc,
oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h,
pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h,
pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h,
pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h,
pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc,
pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc,
pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc,
pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc,
pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc,
pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc,
pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-vm-eval.cc, pt-walk.cc, pt-walk.h,
pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h,
range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc,
chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h,
lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h,
oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h,
oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc,
qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc,
randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc,
sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc,
child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc,
file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h,
mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h,
oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc,
oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h,
base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h,
file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc,
lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h,
oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h,
oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h,
oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h,
pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h,
url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 01 Dec 2022 14:23:45 -0800 |
parents | 796f54d4ddbf |
children | aac27ad79be6 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2022 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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26 #if ! defined (octave_file_stat_h) |
2926 | 27 #define octave_file_stat_h 1 |
28 | |
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29 #include "octave-config.h" |
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30 |
2926 | 31 #include <string> |
32 | |
3260 | 33 #include "oct-time.h" |
34 | |
2926 | 35 #include <sys/types.h> |
36 | |
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37 OCTAVE_BEGIN_NAMESPACE(octave) |
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38 |
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39 OCTAVE_BEGIN_NAMESPACE(sys) |
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40 |
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41 class |
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42 OCTAVE_API |
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43 base_file_stat |
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44 { |
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45 public: |
2926 | 46 |
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47 base_file_stat (void) |
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48 : m_initialized (false), m_fail (false), m_errmsg (), m_mode (), |
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49 m_ino (), m_dev (), m_nlink (), m_uid (), m_gid (), |
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50 m_size (), m_atime (), m_mtime (), m_ctime (), m_rdev (), |
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51 m_blksize (), m_blocks () { } |
8549 | 52 |
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53 base_file_stat (const base_file_stat& fs) |
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54 : m_initialized (fs.m_initialized), m_fail (fs.m_fail), |
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55 m_errmsg (fs.m_errmsg), m_mode (fs.m_mode), m_ino (fs.m_ino), |
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56 m_dev (fs.m_dev), m_nlink (fs.m_nlink), m_uid (fs.m_uid), |
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57 m_gid (fs.m_gid), m_size (fs.m_size), m_atime (fs.m_atime), |
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58 m_mtime (fs.m_mtime), m_ctime (fs.m_ctime), m_rdev (fs.m_rdev), |
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59 m_blksize (fs.m_blksize), m_blocks (fs.m_blocks) { } |
8549 | 60 |
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61 base_file_stat& operator = (const base_file_stat& fs) |
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62 { |
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63 if (this != &fs) |
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64 { |
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65 m_initialized = fs.m_initialized; |
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66 m_fail = fs.m_fail; |
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67 m_errmsg = fs.m_errmsg; |
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68 m_mode = fs.m_mode; |
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69 m_ino = fs.m_ino; |
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70 m_dev = fs.m_dev; |
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71 m_nlink = fs.m_nlink; |
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72 m_uid = fs.m_uid; |
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73 m_gid = fs.m_gid; |
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74 m_size = fs.m_size; |
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75 m_atime = fs.m_atime; |
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76 m_mtime = fs.m_mtime; |
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77 m_ctime = fs.m_ctime; |
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78 m_rdev = fs.m_rdev; |
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79 m_blksize = fs.m_blksize; |
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80 m_blocks = fs.m_blocks; |
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81 } |
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82 |
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83 return *this; |
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84 } |
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85 |
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86 // The minimum difference in file time stamp values. |
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87 // FIXME: This value should come from the filesystem itself. |
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88 // How can we get that info? |
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89 sys::time time_resolution (void) const |
2926 | 90 { |
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91 static sys::time resolution (1.0); |
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92 return resolution; |
2926 | 93 } |
94 | |
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95 // File status and info. The is_XXX functions will return false for |
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96 // file_stat objects that are not properly initialized. The others |
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97 // should all return 0 (or the equivalent, for the given object) |
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98 // which is likely not meaningful. |
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100 bool is_blk (void) const; |
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101 bool is_chr (void) const; |
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102 bool is_dir (void) const; |
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103 bool is_fifo (void) const; |
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104 bool is_lnk (void) const; |
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105 bool is_reg (void) const; |
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106 bool is_sock (void) const; |
2926 | 107 |
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108 static bool is_blk (mode_t mode); |
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109 static bool is_chr (mode_t mode); |
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110 static bool is_dir (mode_t mode); |
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111 static bool is_fifo (mode_t mode); |
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112 static bool is_lnk (mode_t mode); |
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113 static bool is_reg (mode_t mode); |
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114 static bool is_sock (mode_t mode); |
2926 | 115 |
21935 | 116 static bool have_struct_stat_st_rdev (void); |
117 static bool have_struct_stat_st_blksize (void); | |
118 static bool have_struct_stat_st_blocks (void); | |
119 | |
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120 ino_t ino (void) const { return m_ino; } |
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121 dev_t dev (void) const { return m_dev; } |
5476 | 122 |
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123 nlink_t nlink (void) const { return m_nlink; } |
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124 |
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125 uid_t uid (void) const { return m_uid; } |
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126 gid_t gid (void) const { return m_gid; } |
2926 | 127 |
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128 off_t size (void) const { return m_size; } |
2926 | 129 |
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130 sys::time atime (void) const { return m_atime; } |
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131 sys::time mtime (void) const { return m_mtime; } |
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132 sys::time ctime (void) const { return m_ctime; } |
2926 | 133 |
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134 dev_t rdev (void) const { return m_rdev; } |
2926 | 135 |
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136 long blksize (void) const { return m_blksize; } |
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137 long blocks (void) const { return m_blocks; } |
2926 | 138 |
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139 mode_t mode (void) const { return m_mode; } |
2926 | 140 |
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141 std::string mode_as_string (void) const; |
5476 | 142 |
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143 bool ok (void) const { return m_initialized && ! m_fail; } |
2926 | 144 |
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145 operator bool () const { return ok (); } |
2926 | 146 |
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147 bool exists (void) const { return ok (); } |
2926 | 148 |
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149 std::string error (void) const { return ok () ? "" : m_errmsg; } |
2926 | 150 |
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151 // Has the file referenced by this object been modified since TIME? |
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152 bool is_newer (const sys::time& time) const { return m_mtime > time; } |
2926 | 153 |
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154 // It's nice to be able to hide the file_stat object if we don't |
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155 // really care about it. |
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156 static int is_newer (const std::string&, const sys::time&); |
2926 | 157 |
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158 protected: |
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159 |
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160 virtual ~base_file_stat (void) = default; |
2926 | 161 |
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162 // TRUE means we have already called stat. |
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163 bool m_initialized; |
2926 | 164 |
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165 // TRUE means the stat for this file failed. |
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166 bool m_fail; |
2926 | 167 |
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168 // If a failure occurs, this contains the system error text. |
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169 std::string m_errmsg; |
2926 | 170 |
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171 // file type and permissions |
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172 mode_t m_mode; |
2926 | 173 |
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174 // serial number |
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175 ino_t m_ino; |
2926 | 176 |
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177 // device number |
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178 dev_t m_dev; |
2926 | 179 |
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180 // number of links |
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181 nlink_t m_nlink; |
2926 | 182 |
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183 // user ID of owner |
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184 uid_t m_uid; |
2926 | 185 |
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186 // group ID of owner |
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187 gid_t m_gid; |
2926 | 188 |
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189 // size in bytes, for regular files |
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190 off_t m_size; |
2926 | 191 |
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192 // time of last access |
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193 sys::time m_atime; |
2926 | 194 |
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195 // time of last modification |
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196 sys::time m_mtime; |
8549 | 197 |
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198 // time of last file status change |
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199 sys::time m_ctime; |
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200 |
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201 // device number for special files |
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202 dev_t m_rdev; |
8549 | 203 |
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204 // best I/O block size |
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205 long m_blksize; |
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206 |
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207 // number of 512-byte blocks allocated |
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208 long m_blocks; |
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209 }; |
8549 | 210 |
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211 class |
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212 OCTAVE_API |
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213 file_stat : public base_file_stat |
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214 { |
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215 public: |
8549 | 216 |
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217 // This constructor must remain defined in the cpp file rather than in |
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218 // the header file (bug #50234). |
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219 file_stat (const std::string& n = "", bool fl = true); |
8549 | 220 |
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221 file_stat (const file_stat& fs) |
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222 : base_file_stat (fs), m_file_name (fs.m_file_name), |
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223 m_follow_links (fs.m_follow_links) { } |
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225 file_stat& operator = (const file_stat& fs) |
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226 { |
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227 if (this != &fs) |
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228 { |
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229 base_file_stat::operator = (fs); |
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231 m_file_name = fs.m_file_name; |
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232 m_follow_links = fs.m_follow_links; |
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233 } |
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235 return *this; |
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236 } |
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238 // This destructor must remain as an empty destructor defined in the |
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239 // cpp file rather than in the header file (bug #50234). |
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240 ~file_stat (void); |
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242 void get_stats (bool force = false) |
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243 { |
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244 if (! m_initialized || force) |
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245 update_internal (force); |
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246 } |
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248 void get_stats (const std::string& n, bool force = false) |
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249 { |
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250 if (n != m_file_name || ! m_initialized || force) |
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251 { |
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252 m_initialized = false; |
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253 |
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254 m_file_name = n; |
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256 update_internal (force); |
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257 } |
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258 } |
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260 private: |
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261 |
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262 // Name of the file. |
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263 std::string m_file_name; |
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265 // TRUE means follow symbolic links to the ultimate file (stat). |
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266 // FALSE means get information about the link itself (lstat). |
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267 bool m_follow_links; |
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269 void update_internal (bool force = false); |
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270 }; |
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272 class |
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273 OCTAVE_API |
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274 file_fstat : public base_file_stat |
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275 { |
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276 public: |
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277 |
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278 file_fstat (int n) : base_file_stat (), m_fid (n) |
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280 update_internal (); |
8549 | 281 } |
282 | |
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283 file_fstat (const file_fstat& fs) |
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284 : base_file_stat (fs), m_fid (fs.m_fid) { } |
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286 file_fstat& operator = (const file_fstat& fs) |
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287 { |
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288 if (this != &fs) |
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289 { |
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290 base_file_stat::operator = (fs); |
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291 |
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292 m_fid = fs.m_fid; |
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293 } |
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295 return *this; |
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296 } |
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297 |
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298 ~file_fstat (void) = default; |
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300 void get_stats (bool force = false) |
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301 { |
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302 if (! m_initialized || force) |
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303 update_internal (force); |
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304 } |
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305 |
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306 void get_stats (int n, bool force = false) |
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308 if (n != m_fid || ! m_initialized || force) |
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309 { |
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310 m_initialized = false; |
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312 m_fid = n; |
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314 update_internal (force); |
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315 } |
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317 |
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318 private: |
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319 |
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320 // Open file descriptor. |
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321 int m_fid; |
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323 void update_internal (bool force = false); |
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324 }; |
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325 |
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326 OCTAVE_END_NAMESPACE(sys) |
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327 OCTAVE_END_NAMESPACE(octave) |
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328 |
2926 | 329 #endif |