Mercurial > octave
annotate libinterp/corefcn/oct-stdstrm.h @ 31608:23664317f0d3
maint: merge stable to default
author | Rik <rik@octave.org> |
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date | Thu, 01 Dec 2022 20:05:44 -0800 |
parents | dfa5d9c3ae72 aac27ad79be6 |
children | 5f11de0e7440 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1996-2022 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 //////////////////////////////////////////////////////////////////////// |
2081 | 25 |
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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" |
3630 | 34 #include "c-file-ptr-stream.h" |
2081 | 35 |
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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 // No copying! |
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54 |
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55 tstdiostream (const tstdiostream&) = delete; |
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56 |
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57 tstdiostream& operator = (const tstdiostream&) = delete; |
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58 |
2081 | 59 // Position a stream at OFFSET relative to ORIGIN. |
60 | |
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61 int seek (off_t offset, int origin) |
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62 { |
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63 return m_stream ? m_stream->seek (offset, origin) : -1; |
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64 } |
2081 | 65 |
66 // Return current stream position. | |
67 | |
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68 off_t tell (void) { return m_stream ? m_stream->tell () : -1; } |
2081 | 69 |
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70 // Return nonzero if EOF has been reached on this stream. |
4327 | 71 |
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72 bool eof (void) const { return m_stream ? m_stream->eof () : true; } |
4327 | 73 |
2081 | 74 // The name of the file. |
75 | |
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76 std::string name (void) const { return m_name; } |
2081 | 77 |
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78 std::istream * input_stream (void) |
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79 { |
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80 return (m_mode & std::ios::in) ? m_stream : nullptr; |
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81 } |
2081 | 82 |
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83 std::ostream * output_stream (void) |
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84 { |
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85 return (m_mode & std::ios::out) ? m_stream : nullptr; |
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86 } |
4326 | 87 |
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88 // FIXME: should not have to cast away const here. |
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89 BUF_T * rdbuf (void) const |
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90 { |
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91 return m_stream ? (const_cast<STREAM_T *> (m_stream))->rdbuf () : nullptr; |
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92 } |
4326 | 93 |
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94 int file_number (void) const { return m_fnum; } |
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95 |
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96 bool bad (void) const { return m_stream ? m_stream->bad () : true; } |
4326 | 97 |
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98 void clear (void) |
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99 { |
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100 if (m_stream) |
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101 m_stream->clear (); |
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102 } |
4326 | 103 |
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104 void do_close (void) |
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105 { |
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106 if (m_stream) |
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107 m_stream->stream_close (); |
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108 } |
4326 | 109 |
110 protected: | |
111 | |
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112 ~tstdiostream (void) { delete m_stream; } |
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113 |
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114 //-------- |
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115 |
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116 std::string m_name; |
4327 | 117 |
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118 std::ios::openmode m_mode; |
4327 | 119 |
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120 STREAM_T *m_stream; |
4326 | 121 |
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122 // The file number associated with this file. |
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123 int m_fnum; |
5325 | 124 }; |
4326 | 125 |
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126 class |
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127 stdiostream |
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128 : public tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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129 { |
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130 public: |
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131 |
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132 stdiostream (const std::string& n, FILE *f = nullptr, |
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133 std::ios::openmode m = std::ios::in | std::ios::out, |
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134 mach_info::float_format ff = mach_info::native_float_format (), |
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135 const std::string& encoding = "utf-8", |
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136 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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137 : tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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138 (n, f, f ? fileno (f) : -1, m, ff, encoding, cf) { } |
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139 |
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140 static stream |
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141 create (const std::string& n, FILE *f = nullptr, |
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142 std::ios::openmode m = std::ios::in | std::ios::out, |
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143 mach_info::float_format ff = mach_info::native_float_format (), |
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144 const std::string& encoding = "utf-8", |
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145 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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146 { |
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147 return stream (new stdiostream (n, f, m, ff, encoding, cf)); |
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148 } |
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149 |
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150 // No copying! |
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151 |
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152 stdiostream (const stdiostream&) = delete; |
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153 |
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154 stdiostream& operator = (const stdiostream&) = delete; |
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155 |
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156 protected: |
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157 |
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158 ~stdiostream (void) = default; |
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159 }; |
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161 #if defined (HAVE_ZLIB) |
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163 class |
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164 zstdiostream |
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165 : public tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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166 { |
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167 public: |
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168 |
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169 zstdiostream (const std::string& n, gzFile f = nullptr, int fid = 0, |
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170 std::ios::openmode m = std::ios::in | std::ios::out, |
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171 mach_info::float_format ff = mach_info::native_float_format (), |
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172 const std::string& encoding = "utf-8", |
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173 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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174 : tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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175 (n, f, fid, m, ff, encoding, cf) { } |
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176 |
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177 static stream |
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178 create (const std::string& n, gzFile f = nullptr, int fid = 0, |
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179 std::ios::openmode m = std::ios::in | std::ios::out, |
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180 mach_info::float_format ff = mach_info::native_float_format (), |
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181 const std::string& encoding = "utf-8", |
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182 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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183 { |
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184 return stream (new zstdiostream (n, f, fid, m, ff, encoding, cf)); |
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185 } |
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186 |
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187 // No copying! |
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188 |
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189 zstdiostream (const zstdiostream&) = delete; |
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190 |
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191 zstdiostream& operator = (const zstdiostream&) = delete; |
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192 |
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193 protected: |
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194 |
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195 ~zstdiostream (void) = default; |
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196 }; |
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198 #endif | |
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200 OCTAVE_END_NAMESPACE(octave) |
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201 |
2081 | 202 #endif |