Mercurial > octave
annotate libinterp/corefcn/oct-stdstrm.h @ 33658:b1d6e40ac737 stable tip
NEWS.9.md: Fix typo and minor formatting changes.
* etc/NEWS.9.md: Fix typo. Adjust whitespace. Use markdown syntax for code
snippets.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Wed, 05 Jun 2024 11:27:35 +0200 |
parents | 2e484f9f1f18 |
children | 4b601ca024d5 |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2024 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_oct_stdstrm_h) |
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27 #define octave_oct_stdstrm_h 1 |
2081 | 28 |
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29 #include "octave-config.h" |
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30 |
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31 #include <iomanip> |
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32 |
2081 | 33 #include "oct-stream.h" |
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36 OCTAVE_BEGIN_NAMESPACE(octave) |
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37 |
5325 | 38 template <typename BUF_T, typename STREAM_T, typename FILE_T> |
2081 | 39 class |
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40 tstdiostream : public base_stream |
2081 | 41 { |
42 public: | |
43 | |
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44 tstdiostream (const std::string& n, FILE_T f = 0, int fid = 0, |
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45 std::ios::openmode m = std::ios::in | std::ios::out, |
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46 mach_info::float_format ff = mach_info::native_float_format (), |
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47 const std::string& encoding = "utf-8", |
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48 typename BUF_T::close_fcn cf = BUF_T::file_close) |
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49 : base_stream (m, ff, encoding), m_name (n), m_mode (m), |
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50 m_stream (f ? new STREAM_T (f, cf) : nullptr), m_fnum (fid) |
5325 | 51 { } |
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53 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (tstdiostream) |
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54 |
2081 | 55 // Position a stream at OFFSET relative to ORIGIN. |
56 | |
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57 int seek (off_t offset, int origin) |
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58 { |
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59 return m_stream ? m_stream->seek (offset, origin) : -1; |
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60 } |
2081 | 61 |
62 // Return current stream position. | |
63 | |
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64 off_t tell () { return m_stream ? m_stream->tell () : -1; } |
2081 | 65 |
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66 // Return nonzero if EOF has been reached on this stream. |
4327 | 67 |
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68 bool eof () const { return m_stream ? m_stream->eof () : true; } |
4327 | 69 |
2081 | 70 // The name of the file. |
71 | |
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72 std::string name () const { return m_name; } |
2081 | 73 |
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74 std::istream * input_stream () |
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75 { |
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76 return (m_mode & std::ios::in) ? m_stream : nullptr; |
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77 } |
2081 | 78 |
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79 std::ostream * output_stream () |
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80 { |
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81 return (m_mode & std::ios::out) ? m_stream : nullptr; |
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82 } |
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84 // FIXME: should not have to cast away const here. |
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85 BUF_T * rdbuf () const |
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86 { |
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87 return m_stream ? (const_cast<STREAM_T *> (m_stream))->rdbuf () : nullptr; |
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88 } |
4326 | 89 |
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90 int file_number () const { return m_fnum; } |
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91 |
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92 bool bad () const { return m_stream ? m_stream->bad () : true; } |
4326 | 93 |
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94 void clear () |
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95 { |
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96 if (m_stream) |
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97 m_stream->clear (); |
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98 } |
4326 | 99 |
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100 void do_close () |
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101 { |
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102 if (m_stream) |
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103 m_stream->stream_close (); |
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104 } |
4326 | 105 |
106 protected: | |
107 | |
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108 ~tstdiostream () { delete m_stream; } |
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109 |
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110 //-------- |
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111 |
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112 std::string m_name; |
4327 | 113 |
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114 std::ios::openmode m_mode; |
4327 | 115 |
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116 STREAM_T *m_stream; |
4326 | 117 |
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118 // The file number associated with this file. |
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119 int m_fnum; |
5325 | 120 }; |
4326 | 121 |
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122 class |
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123 stdiostream |
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124 : public tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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125 { |
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126 public: |
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127 |
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128 stdiostream (const std::string& n, FILE *f = nullptr, |
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129 std::ios::openmode m = std::ios::in | std::ios::out, |
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130 mach_info::float_format ff = mach_info::native_float_format (), |
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131 const std::string& encoding = "utf-8", |
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132 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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133 : tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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134 (n, f, f ? fileno (f) : -1, m, ff, encoding, cf) { } |
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135 |
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136 static stream |
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137 create (const std::string& n, FILE *f = nullptr, |
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138 std::ios::openmode m = std::ios::in | std::ios::out, |
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139 mach_info::float_format ff = mach_info::native_float_format (), |
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140 const std::string& encoding = "utf-8", |
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141 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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142 { |
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143 return stream (new stdiostream (n, f, m, ff, encoding, cf)); |
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144 } |
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145 |
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146 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (stdiostream) |
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147 |
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148 protected: |
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149 |
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150 ~stdiostream () = default; |
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151 }; |
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153 #if defined (HAVE_ZLIB) |
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155 class |
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156 zstdiostream |
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157 : public tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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158 { |
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159 public: |
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160 |
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161 zstdiostream (const std::string& n, gzFile f = nullptr, int fid = 0, |
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162 std::ios::openmode m = std::ios::in | std::ios::out, |
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163 mach_info::float_format ff = mach_info::native_float_format (), |
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164 const std::string& encoding = "utf-8", |
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165 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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166 : tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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167 (n, f, fid, m, ff, encoding, cf) { } |
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168 |
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169 static stream |
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170 create (const std::string& n, gzFile f = nullptr, int fid = 0, |
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171 std::ios::openmode m = std::ios::in | std::ios::out, |
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172 mach_info::float_format ff = mach_info::native_float_format (), |
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173 const std::string& encoding = "utf-8", |
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174 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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175 { |
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176 return stream (new zstdiostream (n, f, fid, m, ff, encoding, cf)); |
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177 } |
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178 |
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179 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (zstdiostream) |
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180 |
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181 protected: |
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182 |
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183 ~zstdiostream () = default; |
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184 }; |
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186 #endif | |
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188 OCTAVE_END_NAMESPACE(octave) |
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189 |
2081 | 190 #endif |