Mercurial > hg > octave-avbm
changeset 1782:b17d014b6926
[project @ 1996-01-24 08:09:17 by jwe]
Initial revision
author | jwe |
---|---|
date | Wed, 24 Jan 1996 08:09:17 +0000 |
parents | e090f89bf2f5 |
children | da0fc3c3a7b2 |
files | liboctave/dir-ops.cc liboctave/dir-ops.h |
diffstat | 2 files changed, 206 insertions(+), 0 deletions(-) [+] |
line wrap: on
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new file mode 100644 --- /dev/null +++ b/liboctave/dir-ops.cc @@ -0,0 +1,116 @@ +// dir-ops.cc -*- C++ -*- +/* + +Copyright (C) 1996 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 2, 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, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <cerrno> +#include <cstring> + +#include "sysdir.h" + +#include "dir-ops.h" +#include "str-vec.h" + +bool +dir_entry::open (const string& n) +{ + fail = true; + + if (! n.empty ()) + name = n; + + if (! name.empty ()) + { + close (); + + dir = opendir (name.c_str ()); + + if (dir) + fail = false; + else + errmsg = strerror (errno); + } + else + errmsg = "dir_entry::open: empty file name"; + + return ! fail; +} + +string_vector +dir_entry::read (void) +{ + string_vector dirlist; + + if (ok ()) + { + int count = 0; + + struct dirent *dir_ent; + + while ((dir_ent = readdir (dir))) + count++; + + rewinddir (dir); + + dirlist.resize (count); + + for (int i = 0; i < count; i++) + { + dir_ent = readdir (dir); + + if (dir_ent) + dirlist[i] = dir_ent->d_name; + else + break; + } + } + + return dirlist; +} + +void +dir_entry::close (void) +{ + if (dir) + closedir (dir); + + dir = 0; +} + +void +dir_entry::copy (const dir_entry& de) +{ + name = de.name; + dir = de.dir; + fail = de.fail; + errmsg = de.errmsg; +} + +/* +;;; Local Variables: *** +;;; mode: C++ *** +;;; page-delimiter: "^/\\*" *** +;;; End: *** +*/
new file mode 100644 --- /dev/null +++ b/liboctave/dir-ops.h @@ -0,0 +1,90 @@ +// dir-ops.h -*- C++ -*- +/* + +Copyright (C) 1996 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 2, 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, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ + +#if !defined (octave_dir_ops_h) +#define octave_dir_ops_h 1 + +#include <string> + +#include "str-vec.h" + +struct DIR; + +class +dir_entry +{ +public: + + dir_entry (const string& n = string ()) : name (n), dir (0) + { + if (! name.empty ()) + open (); + } + + dir_entry (const dir_entry& d) { copy (d); } + + dir_entry& operator = (const dir_entry& d) + { + copy (d); + return *this; + } + + ~dir_entry (void) { close (); } + + bool open (const string& = string ()); + + string_vector read (void); + + void close (void); + + bool ok (void) const { return dir && ! fail; } + + operator void* () const { return ok () ? (void *) -1 : (void *) 0; } + + string error (void) const { return ok () ? string () : errmsg; } + +private: + + // Name of the directory. + string name; + + // A pointer to the contents of the directory. + DIR *dir; + + // TRUE means the open for this directory failed. + bool fail; + + // If a failure occurs, this contains the system error text. + string errmsg; + + void copy (const dir_entry&); +}; + +#endif + +/* +;;; Local Variables: *** +;;; mode: C++ *** +;;; page-delimiter: "^/\\*" *** +;;; End: *** +*/