Mercurial > octave
annotate libinterp/corefcn/oct-stdstrm.h @ 26703:29ea2369971d
Add basic backend for encodings in file streams (bug #55452).
* oct-stream.h (base_stream): Store encoding in class.
* oct-stream.cc (do_scanf_conv): Convert strings from encoding.
(do_printf_string): Convert strings to encoding.
(base_stream::printf): Convert format string to encoding.
* oct-stdstrm.h (octave_stdiostream, octave_tstdiostream, octave_zstdiostream,
create): Pass encoding through to base_stream.
* oct-prcstrm.[cc,h] (octave_iprocstream, octave_oprocstream, create): Pass
encoding through to octave_stdiostream.
* oct-strstrm.[cc,h] (octave_istrstream, octave_ostrstream, create): Pass
encoding through to base_stream.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Sat, 09 Feb 2019 16:43:11 +0100 |
parents | 00f796120a6d |
children | 92ba3434f0b0 |
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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43 const std::string& encoding = "utf-8", |
10313 | 44 typename BUF_T::close_fcn cf = BUF_T::file_close) |
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45 : octave::base_stream (m, ff, encoding), nm (n), md (m), |
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46 s (f ? new STREAM_T (f, cf) : nullptr), fnum (fid) |
5325 | 47 { } |
4327 | 48 |
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49 // No copying! |
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50 |
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51 octave_tstdiostream (const octave_tstdiostream&) = delete; |
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52 |
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53 octave_tstdiostream& operator = (const octave_tstdiostream&) = delete; |
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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 { return s ? s->seek (offset, origin) : -1; } |
2081 | 59 |
60 // Return current stream position. | |
61 | |
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62 off_t tell (void) { return s ? s->tell () : -1; } |
2081 | 63 |
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64 // Return nonzero if EOF has been reached on this stream. |
4327 | 65 |
66 bool eof (void) const { return s ? s->eof () : true; } | |
67 | |
2081 | 68 // The name of the file. |
69 | |
3523 | 70 std::string name (void) const { return nm; } |
2081 | 71 |
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72 std::istream * input_stream (void) { return (md & std::ios::in) ? s : nullptr; } |
2081 | 73 |
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74 std::ostream * output_stream (void) { return (md & std::ios::out) ? s : nullptr; } |
4326 | 75 |
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76 // FIXME: should not have to cast away const here. |
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77 BUF_T * rdbuf (void) const |
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78 { return s ? (const_cast<STREAM_T *> (s))->rdbuf () : nullptr; } |
4326 | 79 |
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80 int file_number (void) const { return fnum; } |
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81 |
4326 | 82 bool bad (void) const { return s ? s->bad () : true; } |
83 | |
4327 | 84 void clear (void) { if (s) s->clear (); } |
4326 | 85 |
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86 void do_close (void) { if (s) s->stream_close (); } |
4326 | 87 |
88 protected: | |
89 | |
4327 | 90 std::string nm; |
91 | |
92 std::ios::openmode md; | |
93 | |
5325 | 94 STREAM_T *s; |
4326 | 95 |
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96 // The file number associated with this file. |
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97 int fnum; |
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98 |
5325 | 99 ~octave_tstdiostream (void) { delete s; } |
100 }; | |
4326 | 101 |
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102 class |
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103 octave_stdiostream |
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104 : public octave_tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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105 { |
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106 public: |
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107 |
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108 octave_stdiostream (const std::string& n, FILE *f = nullptr, |
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109 std::ios::openmode m = std::ios::in | std::ios::out, |
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110 octave::mach_info::float_format ff |
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111 = octave::mach_info::native_float_format (), |
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112 const std::string& encoding = "utf-8", |
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113 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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114 : octave_tstdiostream<c_file_ptr_buf, io_c_file_ptr_stream, FILE *> |
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115 (n, f, f ? fileno (f) : -1, m, ff, encoding, cf) { } |
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116 |
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117 static octave::stream |
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118 create (const std::string& n, FILE *f = nullptr, |
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119 std::ios::openmode m = std::ios::in | std::ios::out, |
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120 octave::mach_info::float_format ff |
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121 = octave::mach_info::native_float_format (), |
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122 const std::string& encoding = "utf-8", |
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123 c_file_ptr_buf::close_fcn cf = c_file_ptr_buf::file_close) |
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124 { |
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125 return octave::stream (new octave_stdiostream (n, f, m, ff, encoding, cf)); |
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126 } |
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127 |
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128 // No copying! |
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129 |
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130 octave_stdiostream (const octave_stdiostream&) = delete; |
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131 |
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132 octave_stdiostream& operator = (const octave_stdiostream&) = delete; |
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133 |
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134 protected: |
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135 |
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136 ~octave_stdiostream (void) = default; |
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137 }; |
5325 | 138 |
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139 #if defined (HAVE_ZLIB) |
5325 | 140 |
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141 class |
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142 octave_zstdiostream |
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143 : public octave_tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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144 { |
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145 public: |
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146 |
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147 octave_zstdiostream (const std::string& n, gzFile f = nullptr, int fid = 0, |
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148 std::ios::openmode m = std::ios::in | std::ios::out, |
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149 octave::mach_info::float_format ff |
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150 = octave::mach_info::native_float_format (), |
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151 const std::string& encoding = "utf-8", |
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152 c_zfile_ptr_buf::close_fcn cf |
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153 = c_zfile_ptr_buf::file_close) |
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154 : octave_tstdiostream<c_zfile_ptr_buf, io_c_zfile_ptr_stream, gzFile> |
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155 (n, f, fid, m, ff, encoding, cf) { } |
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156 |
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157 static octave::stream |
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158 create (const std::string& n, gzFile f = nullptr, int fid = 0, |
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159 std::ios::openmode m = std::ios::in | std::ios::out, |
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160 octave::mach_info::float_format ff |
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161 = octave::mach_info::native_float_format (), |
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162 const std::string& encoding = "utf-8", |
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163 c_zfile_ptr_buf::close_fcn cf = c_zfile_ptr_buf::file_close) |
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164 { |
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165 return octave::stream (new octave_zstdiostream (n, f, fid, m, ff, encoding, |
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166 cf)); |
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167 } |
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168 |
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169 // No copying! |
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170 |
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171 octave_zstdiostream (const octave_zstdiostream&) = delete; |
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172 |
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173 octave_zstdiostream& operator = (const octave_zstdiostream&) = delete; |
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174 |
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175 protected: |
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176 |
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177 ~octave_zstdiostream (void) = default; |
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178 }; |
5325 | 179 |
180 #endif | |
4326 | 181 |
2081 | 182 #endif |