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annotate libinterp/corefcn/oct-iostrm.cc @ 25054:6652d3823428 stable

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maint: Update copyright dates in all source files.
author John W. Eaton <jwe@octave.org>
date Fri, 30 Mar 2018 09:19:05 -0400
parents 194eb4bd202b
children cb1606f78f6b
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1 /*
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2
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3 Copyright (C) 1996-2018 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include "config.h"
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25 #endif
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26
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27 #include <iostream>
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28
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29 #include "error.h"
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30 #include "oct-iostrm.h"
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31
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32 // Position a stream at OFFSET relative to ORIGIN.
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33
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34 int
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35 octave_base_iostream::seek (off_t, int)
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36 {
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37 invalid_operation ();
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38 return -1;
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39 }
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40
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41 // Return current stream position.
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42
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43 off_t
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44 octave_base_iostream::tell (void)
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45 {
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46 invalid_operation ();
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47 return -1;
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48 }
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49
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50 // Return nonzero if EOF has been reached on this stream.
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51
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52 bool
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53 octave_base_iostream::eof (void) const
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54 {
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55 invalid_operation ();
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56 return false;
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57 }
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58
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59 void
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60 octave_base_iostream::invalid_operation (void) const
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61 {
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62 // Note: use ::error to get error from error.h which halts operation.
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63 ::error ("%s: invalid operation", stream_type ());
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64 }
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65
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66 // Return nonzero if EOF has been reached on this stream.
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67
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68 bool
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69 octave_istream::eof (void) const
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70 {
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71 return is && is->eof ();
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72 }
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73
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74 octave::stream
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75 octave_istream::create (std::istream *arg, const std::string& n)
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76 {
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77 return octave::stream (new octave_istream (arg, n));
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78 }
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79
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80 // Return nonzero if EOF has been reached on this stream.
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82 bool
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83 octave_ostream::eof (void) const
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84 {
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85 return os && os->eof ();
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86 }
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87
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88 octave::stream
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89 octave_ostream::create (std::ostream *arg, const std::string& n)
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90 {
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91 return octave::stream (new octave_ostream (arg, n));
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92 }