Mercurial > octave
annotate libinterp/corefcn/oct-stdstrm.h @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | cb1606f78f6b |
children | 29ea2369971d |
rev | line source |
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2081 | 1 /* |
2 | |
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3 Copyright (C) 1996-2019 John W. Eaton |
2081 | 4 |
5 This file is part of Octave. | |
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. |
2081 | 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. |
2081 | 16 |
17 You should have received a copy of the GNU General Public License | |
7016 | 18 along with Octave; see the file COPYING. If not, see |
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19 <https://www.gnu.org/licenses/>. |
2081 | 20 |
21 */ | |
22 | |
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23 #if ! defined (octave_oct_stdstrm_h) |
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24 #define octave_oct_stdstrm_h 1 |
2081 | 25 |
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26 #include "octave-config.h" |
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27 |
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28 #include <iomanip> |
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29 |
2081 | 30 #include "oct-stream.h" |
3630 | 31 #include "c-file-ptr-stream.h" |
2081 | 32 |
5325 | 33 template <typename BUF_T, typename STREAM_T, typename FILE_T> |
2081 | 34 class |
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35 octave_tstdiostream : public octave::base_stream |
2081 | 36 { |
37 public: | |
38 | |
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39 octave_tstdiostream (const std::string& n, FILE_T f = 0, int fid = 0, |
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40 std::ios::openmode m = std::ios::in | std::ios::out, |
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41 octave::mach_info::float_format ff |
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42 = octave::mach_info::native_float_format (), |
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44 : octave::base_stream (m, ff), nm (n), md (m), |
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45 s (f ? new STREAM_T (f, cf) : nullptr), fnum (fid) |
5325 | 46 { } |
4327 | 47 |
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48 // No copying! |
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49 |
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50 octave_tstdiostream (const octave_tstdiostream&) = delete; |
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51 |
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52 octave_tstdiostream& operator = (const octave_tstdiostream&) = delete; |
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53 |
2081 | 54 // Position a stream at OFFSET relative to ORIGIN. |
55 | |
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56 int seek (off_t offset, int origin) |
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57 { return s ? s->seek (offset, origin) : -1; } |
2081 | 58 |
59 // Return current stream position. | |
60 | |
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61 off_t tell (void) { return s ? s->tell () : -1; } |
2081 | 62 |
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63 // Return nonzero if EOF has been reached on this stream. |
4327 | 64 |
65 bool eof (void) const { return s ? s->eof () : true; } | |
66 | |
2081 | 67 // The name of the file. |
68 | |
3523 | 69 std::string name (void) const { return nm; } |
2081 | 70 |
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71 std::istream * input_stream (void) { return (md & std::ios::in) ? s : nullptr; } |
2081 | 72 |
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73 std::ostream * output_stream (void) { return (md & std::ios::out) ? s : nullptr; } |
4326 | 74 |
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75 // FIXME: should not have to cast away const here. |
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76 BUF_T * rdbuf (void) const |
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77 { return s ? (const_cast<STREAM_T *> (s))->rdbuf () : nullptr; } |
4326 | 78 |
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79 int file_number (void) const { return fnum; } |
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80 |
4326 | 81 bool bad (void) const { return s ? s->bad () : true; } |
82 | |
4327 | 83 void clear (void) { if (s) s->clear (); } |
4326 | 84 |
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85 void do_close (void) { if (s) s->stream_close (); } |
4326 | 86 |
87 protected: | |
88 | |
4327 | 89 std::string nm; |
90 | |
91 std::ios::openmode md; | |
92 | |
5325 | 93 STREAM_T *s; |
4326 | 94 |
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95 // The file number associated with this file. |
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96 int fnum; |
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97 |
5325 | 98 ~octave_tstdiostream (void) { delete s; } |
99 }; | |
4326 | 100 |
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101 class |
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102 octave_stdiostream |
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103 : public octave_tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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104 { |
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105 public: |
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106 |
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107 octave_stdiostream (const std::string& n, FILE *f = nullptr, |
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108 std::ios::openmode m = std::ios::in | std::ios::out, |
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109 octave::mach_info::float_format ff |
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110 = octave::mach_info::native_float_format (), |
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111 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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112 : octave_tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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113 (n, f, f ? fileno (f) : -1, m, ff, cf) { } |
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114 |
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115 static octave::stream |
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116 create (const std::string& n, FILE *f = nullptr, |
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117 std::ios::openmode m = std::ios::in | std::ios::out, |
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118 octave::mach_info::float_format ff |
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119 = octave::mach_info::native_float_format (), |
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120 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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121 { |
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122 return octave::stream (new octave_stdiostream (n, f, m, ff, cf)); |
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123 } |
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124 |
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125 // No copying! |
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126 |
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127 octave_stdiostream (const octave_stdiostream&) = delete; |
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128 |
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129 octave_stdiostream& operator = (const octave_stdiostream&) = delete; |
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130 |
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131 protected: |
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132 |
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133 ~octave_stdiostream (void) = default; |
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134 }; |
5325 | 135 |
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136 #if defined (HAVE_ZLIB) |
5325 | 137 |
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138 class |
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139 octave_zstdiostream |
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140 : public octave_tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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141 { |
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142 public: |
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143 |
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144 octave_zstdiostream (const std::string& n, gzFile f = nullptr, int fid = 0, |
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145 std::ios::openmode m = std::ios::in | std::ios::out, |
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146 octave::mach_info::float_format ff |
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147 = octave::mach_info::native_float_format (), |
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148 c_zfile_ptr_buf::close_fcn cf |
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149 = c_zfile_ptr_buf::file_close) |
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150 : octave_tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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151 (n, f, fid, m, ff, cf) { } |
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152 |
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153 static octave::stream |
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154 create (const std::string& n, gzFile f = nullptr, int fid = 0, |
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155 std::ios::openmode m = std::ios::in | std::ios::out, |
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156 octave::mach_info::float_format ff |
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157 = octave::mach_info::native_float_format (), |
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158 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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159 { |
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160 return octave::stream (new octave_zstdiostream (n, f, fid, m, ff, cf)); |
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161 } |
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162 |
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163 // No copying! |
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164 |
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165 octave_zstdiostream (const octave_zstdiostream&) = delete; |
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166 |
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167 octave_zstdiostream& operator = (const octave_zstdiostream&) = delete; |
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168 |
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169 protected: |
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170 |
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171 ~octave_zstdiostream (void) = default; |
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172 }; |
5325 | 173 |
174 #endif | |
4326 | 175 |
2081 | 176 #endif |