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annotate libinterp/corefcn/c-file-ptr-stream.cc @ 31706:597f3ee61a48 stable

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update Octave Project Developers copyright for the new year
author John W. Eaton <jwe@octave.org>
date Fri, 06 Jan 2023 13:11:27 -0500
parents e88a07dec498
children 21f9b34eb893
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2000-2023 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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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <iomanip>
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31
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32 #include "filepos-wrappers.h"
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33
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34 #include "c-file-ptr-stream.h"
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35
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36 OCTAVE_BEGIN_NAMESPACE(octave)
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37
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38 #if ! defined (SEEK_SET)
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39 # define SEEK_SET 0
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40 #endif
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41
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42 #if ! defined (SEEK_CUR)
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43 # define SEEK_CUR 1
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44 #endif
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45
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46 #if ! defined (SEEK_END)
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47 # define SEEK_END 2
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48 #endif
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49
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50 c_file_ptr_buf::~c_file_ptr_buf (void)
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51 {
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52 buf_close ();
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53 }
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54
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55 // FIXME: I'm sure there is room for improvement here...
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56
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57 c_file_ptr_buf::int_type
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58 c_file_ptr_buf::overflow (int_type c)
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59 {
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60 if (m_f)
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61 return (c != traits_type::eof ()) ? std::fputc (c, m_f) : flush ();
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62 else
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63 return traits_type::not_eof (c);
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64 }
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65
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66 c_file_ptr_buf::int_type
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67 c_file_ptr_buf::underflow_common (bool bump)
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68 {
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69 if (m_f)
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70 {
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71 int_type c = std::fgetc (m_f);
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72
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73 if (! bump && c != traits_type::eof ())
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74 ungetc (c, m_f);
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75
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76 return c;
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77 }
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78 else
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79 return traits_type::eof ();
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80 }
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81
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82 c_file_ptr_buf::int_type
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83 c_file_ptr_buf::pbackfail (int_type c)
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84 {
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85 return ((c != traits_type::eof () && m_f)
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86 ? ungetc (c, m_f) : traits_type::not_eof (c));
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87 }
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88
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89 std::streamsize
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90 c_file_ptr_buf::xsputn (const char *s, std::streamsize n)
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91 {
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92 if (m_f)
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93 return std::fwrite (s, 1, n, m_f);
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94 else
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95 return 0;
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96 }
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97
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98 std::streamsize
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99 c_file_ptr_buf::xsgetn (char *s, std::streamsize n)
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100 {
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101 if (m_f)
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102 return std::fread (s, 1, n, m_f);
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103 else
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104 return 0;
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105 }
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106
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107 static inline int
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108 seekdir_to_whence (std::ios::seekdir dir)
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109 {
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110 return (dir == std::ios::beg
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111 ? SEEK_SET : (dir == std::ios::cur
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112 ? SEEK_CUR : (dir == std::ios::end
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113 ? SEEK_END : dir)));
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114 }
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115
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116 std::streampos
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117 c_file_ptr_buf::seekoff (std::streamoff offset,
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118 std::ios::seekdir dir,
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119 std::ios::openmode)
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120 {
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121 if (m_f)
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122 {
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123 octave_fseeko_wrapper (m_f, offset, seekdir_to_whence (dir));
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124
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125 return octave_ftello_wrapper (m_f);
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126 }
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127 else
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128 return 0;
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129 }
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130
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131 std::streampos
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132 c_file_ptr_buf::seekpos (std::streampos offset, std::ios::openmode)
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133 {
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134 if (m_f)
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135 {
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136 octave_fseeko_wrapper (m_f, offset, SEEK_SET);
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137
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138 return octave_ftello_wrapper (m_f);
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139 }
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140 else
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141 return 0;
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142 }
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143
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144 int
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145 c_file_ptr_buf::sync (void)
168c4d71dc63 [project @ 2000-03-23 07:34:54 by jwe]
jwe
parents:
diff changeset
146 {
3652
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
147 flush ();
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
148
3628
168c4d71dc63 [project @ 2000-03-23 07:34:54 by jwe]
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parents:
diff changeset
149 return 0;
168c4d71dc63 [project @ 2000-03-23 07:34:54 by jwe]
jwe
parents:
diff changeset
150 }
168c4d71dc63 [project @ 2000-03-23 07:34:54 by jwe]
jwe
parents:
diff changeset
151
3652
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jwe
parents: 3644
diff changeset
152 int
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
153 c_file_ptr_buf::flush (void)
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
154 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
155 return m_f ? std::fflush (m_f) : traits_type::eof ();
3652
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
156 }
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
157
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
158 int
10288
5e972e2deffe avoid some possible gnulib #defines
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
159 c_file_ptr_buf::buf_close (void)
3652
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
160 {
3693
87fa55a09f19 [project @ 2000-07-05 16:04:11 by jwe]
jwe
parents: 3652
diff changeset
161 int retval = -1;
87fa55a09f19 [project @ 2000-07-05 16:04:11 by jwe]
jwe
parents: 3652
diff changeset
162
3716
08fe5f74c7d4 [project @ 2000-09-07 04:59:03 by jwe]
jwe
parents: 3693
diff changeset
163 flush ();
08fe5f74c7d4 [project @ 2000-09-07 04:59:03 by jwe]
jwe
parents: 3693
diff changeset
164
30125
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Rik <rik@octave.org>
parents: 30002
diff changeset
165 if (m_f)
3693
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jwe
parents: 3652
diff changeset
166 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
167 retval = m_cf (m_f);
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
168 m_f = nullptr;
3693
87fa55a09f19 [project @ 2000-07-05 16:04:11 by jwe]
jwe
parents: 3652
diff changeset
169 }
87fa55a09f19 [project @ 2000-07-05 16:04:11 by jwe]
jwe
parents: 3652
diff changeset
170
87fa55a09f19 [project @ 2000-07-05 16:04:11 by jwe]
jwe
parents: 3652
diff changeset
171 return retval;
3652
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
172 }
25e84fcef38a [project @ 2000-03-31 08:50:48 by jwe]
jwe
parents: 3644
diff changeset
173
10411
479cc8a0a846 use gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
174 int
16011
8122286c69a9 initial large file support for 32-bit systems
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
175 c_file_ptr_buf::seek (off_t offset, int origin)
12927
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
176 {
30125
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Rik <rik@octave.org>
parents: 30002
diff changeset
177 return m_f ? octave_fseeko_wrapper (m_f, offset, origin) : -1;
12927
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
178 }
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
179
16011
8122286c69a9 initial large file support for 32-bit systems
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
180 off_t
12927
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
181 c_file_ptr_buf::tell (void)
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
182 {
30125
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Rik <rik@octave.org>
parents: 30002
diff changeset
183 return m_f ? octave_ftello_wrapper (m_f) : -1;
12927
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
184 }
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
185
f9c1f7c1ead0 maint: undo part of previous gnulib changes
John W. Eaton <jwe@octave.org>
parents: 12912
diff changeset
186 int
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
187 c_file_ptr_buf::file_close (FILE *m_f)
10411
479cc8a0a846 use gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
188 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
189 return std::fclose (m_f);
10411
479cc8a0a846 use gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
190 }
479cc8a0a846 use gnulib namespace
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
191
21724
aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef"
John W. Eaton <jwe@octave.org>
parents: 21550
diff changeset
192 #if defined (HAVE_ZLIB)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
193
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
194 c_zfile_ptr_buf::~c_zfile_ptr_buf (void)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
195 {
10288
5e972e2deffe avoid some possible gnulib #defines
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
196 buf_close ();
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
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diff changeset
197 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
198
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
199 // FIXME: I'm sure there is room for improvement here...
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
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diff changeset
200
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
201 c_zfile_ptr_buf::int_type
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
202 c_zfile_ptr_buf::overflow (int_type c)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
203 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
204 if (m_f)
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
205 return (c != traits_type::eof ()) ? gzputc (m_f, c) : flush ();
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
206 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
207 return traits_type::not_eof (c);
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
208 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
209
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
210 c_zfile_ptr_buf::int_type
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
211 c_zfile_ptr_buf::underflow_common (bool bump)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
212 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
213 if (m_f)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
214 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
215 int_type c = gzgetc (m_f);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
216
21183
e7fda94aec6b eliminate OCTAVE_CXX_ISO_COMPLIANT_LIBRARY macro
John W. Eaton <jwe@octave.org>
parents: 19697
diff changeset
217 if (! bump && c != traits_type::eof ())
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
218 gzungetc (c, m_f);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
219
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
220 return c;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
221 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
222 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
223 return traits_type::eof ();
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
224 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
225
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
226 c_zfile_ptr_buf::int_type
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
227 c_zfile_ptr_buf::pbackfail (int_type c)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
228 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
229 return ((c != traits_type::eof () && m_f)
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
230 ? gzungetc (c, m_f) : traits_type::not_eof (c));
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
231 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
232
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
233 std::streamsize
23449
c763214a8260 maint: Use convention 'int *x' for naming pointers.
Rik <rik@octave.org>
parents: 23220
diff changeset
234 c_zfile_ptr_buf::xsputn (const char *s, std::streamsize n)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
235 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
236 if (m_f)
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
237 return gzwrite (m_f, s, n);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
238 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
239 return 0;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
240 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
241
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
242 std::streamsize
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
243 c_zfile_ptr_buf::xsgetn (char *s, std::streamsize n)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
244 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
245 if (m_f)
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
246 return gzread (m_f, s, n);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
247 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
248 return 0;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
249 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
250
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
251 std::streampos
8802
061780d8da1e c-file-ptr-stream.cc: avoid unused parameter warnings
John W. Eaton <jwe@octave.org>
parents: 7017
diff changeset
252 c_zfile_ptr_buf::seekoff (std::streamoff /* offset */,
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10288
diff changeset
253 std::ios::seekdir /* dir */,
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10288
diff changeset
254 std::ios::openmode)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
255 {
5775
ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe]
jwe
parents: 5325
diff changeset
256 // FIXME
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
257 #if 0
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
258 if (m_f)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
259 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
260 gzseek (m_f, offset, seekdir_to_whence (dir));
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
261
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
262 return gztell (m_f);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
263 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
264 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
265 return 0;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
266 #endif
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
267 return -1;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
268 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
269
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
270 std::streampos
8802
061780d8da1e c-file-ptr-stream.cc: avoid unused parameter warnings
John W. Eaton <jwe@octave.org>
parents: 7017
diff changeset
271 c_zfile_ptr_buf::seekpos (std::streampos /* offset */, std::ios::openmode)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
272 {
5775
ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe]
jwe
parents: 5325
diff changeset
273 // FIXME
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
274 #if 0
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
275 if (m_f)
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
276 {
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
277 gzseek (m_f, offset, SEEK_SET);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
278
30125
8dd5da409418 maint: use "m_" prefix for member variables in file c-file-ptr-stream.h.
Rik <rik@octave.org>
parents: 30002
diff changeset
279 return gztell (m_f);
5325
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
280 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
281 else
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
282 return 0;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
283 #endif
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
284 return -1;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
285 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
286
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
287 int
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
288 c_zfile_ptr_buf::sync (void)
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
289 {
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
290 flush ();
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
291
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
292 return 0;
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
293 }
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
294
ecbe4aa87e51 [project @ 2005-04-29 20:48:35 by jwe]
jwe
parents: 5307
diff changeset
295 int
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296 c_zfile_ptr_buf::flush (void)
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297 {
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298 // FIXME: do we need something more complex here, passing
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299 // something other than 0 for the second argument to gzflush and
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300 // checking the return value, etc.?
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301
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302 return m_f ? gzflush (m_f, 0) : traits_type::eof ();
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303 }
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304
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305 int
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306 c_zfile_ptr_buf::buf_close (void)
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307 {
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308 int retval = -1;
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309
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310 flush ();
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311
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312 if (m_f)
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313 {
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314 retval = m_cf (m_f);
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315 m_f = nullptr;
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316 }
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317
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318 return retval;
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319 }
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320
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321 #endif
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322
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323 OCTAVE_END_NAMESPACE(octave)