Mercurial > jwe > octave
annotate liboctave/util/oct-string.cc @ 30827:0826c503f294
Encoding facet based on gnulib uniconv for STL iostreams (bug #61839).
* liboctave/util/oct-string.h, liboctave/util/oct-string.cc (codecvt_u8): Add
encoding facet based on gnulib uniconv for STL iostreams.
* liboctave/wrappers/uniconv-wrappers.h, liboctave/wrappers/uniconv-wrappers.c
(octave_u8_conv_from_encoding_offsets, octave_u8_conv_to_encoding_offsets): Add
new wrappers.
* libinterp/corefcn/oct-stream.h, libinterp/corefcn/oct-stream.cc
(octave::stream): Wrap output stream with encoding facet.
* libinterp/corefcn/utils.h, libinterp/corefcn/utils.cc (format, vformat):
Remove functions that are no longer needed.
* libinterp/corefcn/file-io.cc: Add BIST.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Sat, 05 Mar 2022 21:20:58 +0100 |
parents | 796f54d4ddbf |
children | 79edd49a5a97 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2016-2022 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 //////////////////////////////////////////////////////////////////////// |
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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 "oct-string.h" |
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31 |
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32 #include <algorithm> |
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33 #include <cctype> |
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34 #include <cstring> |
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35 #include <iomanip> |
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36 #include <string> |
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37 |
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38 #include "Array.h" |
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39 #include "lo-ieee.h" |
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40 #include "lo-mappers.h" |
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41 #include "uniconv-wrappers.h" |
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42 #include "unistr-wrappers.h" |
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43 #include "unwind-prot.h" |
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44 |
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45 template <typename T> |
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46 static bool |
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47 str_data_cmp (const typename T::value_type *a, const typename T::value_type *b, |
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48 const typename T::size_type n) |
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49 { |
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50 for (typename T::size_type i = 0; i < n; ++i) |
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51 if (a[i] != b[i]) |
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52 return false; |
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53 return true; |
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54 } |
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55 |
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56 template <typename T> |
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57 static bool |
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58 str_data_cmpi (const typename T::value_type *a, const typename T::value_type *b, |
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59 const typename T::size_type n) |
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60 { |
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61 for (typename T::size_type i = 0; i < n; ++i) |
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62 if (std::tolower (a[i]) != std::tolower (b[i])) |
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63 return false; |
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64 return true; |
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65 } |
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66 |
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67 |
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68 // Templates to handle std::basic_string, std::vector, Array, and char*. |
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69 template <typename T> |
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70 typename T::size_type |
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71 numel (const T& str) |
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72 { |
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73 return str.size (); |
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74 } |
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75 |
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76 template <> |
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77 octave_idx_type |
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78 numel (const Array<char>& str) |
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79 { |
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80 return str.numel (); |
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81 } |
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82 |
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83 template <typename T> |
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84 typename T::size_type |
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85 strlen (const typename T::value_type *str) |
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86 { |
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87 return std::strlen (str); |
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88 } |
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89 |
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90 template <typename T> |
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91 bool |
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92 sizes_cmp (const T& str_a, const T& str_b) |
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93 { |
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94 return str_a.size () == str_b.size (); |
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95 } |
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96 |
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97 template <> |
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98 bool |
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99 sizes_cmp (const Array<char>& str_a, const Array<char>& str_b) |
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100 { |
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101 return str_a.dims () == str_b.dims (); |
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102 } |
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103 |
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104 template <typename T> |
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105 bool |
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106 sizes_cmp (const T& str_a, const typename T::value_type *str_b) |
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107 { |
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108 return str_a.size () == strlen<T> (str_b); |
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109 } |
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110 |
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111 template <> |
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112 bool |
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113 sizes_cmp (const Array<char>& str_a, const char *str_b) |
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114 { |
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115 return (str_a.isvector () && str_a.rows () == 1 |
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116 && str_a.numel () == strlen<Array<char>> (str_b)); |
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117 } |
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118 |
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119 |
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120 template<typename T> |
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121 bool |
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122 octave::string::strcmp (const T& str_a, const T& str_b) |
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123 { |
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124 return (sizes_cmp (str_a, str_b) |
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125 && str_data_cmp<T> (str_a.data (), str_b.data (), numel (str_a))); |
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126 } |
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127 |
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128 template<typename T> |
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129 bool |
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130 octave::string::strcmp (const T& str_a, const typename T::value_type *str_b) |
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131 { |
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132 return (sizes_cmp (str_a, str_b) |
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133 && str_data_cmp<T> (str_a.data (), str_b, numel (str_a))); |
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134 } |
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135 |
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136 |
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137 template<typename T> |
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138 bool |
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139 octave::string::strcmpi (const T& str_a, const T& str_b) |
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140 { |
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141 return (sizes_cmp (str_a, str_b) |
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142 && str_data_cmpi<T> (str_a.data (), str_b.data (), numel (str_a))); |
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143 } |
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144 |
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145 template<typename T> |
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146 bool |
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147 octave::string::strcmpi (const T& str_a, const typename T::value_type *str_b) |
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148 { |
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149 return (sizes_cmp (str_a, str_b) |
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150 && str_data_cmpi<T> (str_a.data (), str_b, numel (str_a))); |
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151 } |
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152 |
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153 |
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154 template<typename T> |
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155 bool |
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156 octave::string::strncmp (const T& str_a, const T& str_b, |
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157 const typename T::size_type n) |
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158 { |
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159 typename T::size_type neff; |
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160 auto len_a = numel (str_a); |
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161 auto len_b = numel (str_b); |
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162 neff = std::min (std::max (len_a, len_b), n); |
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163 |
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164 return (len_a >= neff && len_b >= neff |
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165 && str_data_cmp<T> (str_a.data (), str_b.data (), neff)); |
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166 } |
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167 |
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168 template<typename T> |
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169 bool |
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170 octave::string::strncmp (const T& str_a, const typename T::value_type *str_b, |
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171 const typename T::size_type n) |
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172 { |
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173 typename T::size_type neff; |
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174 auto len_a = numel (str_a); |
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175 auto len_b = strlen<T> (str_b); |
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176 neff = std::min (std::max (len_a, len_b), n); |
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177 |
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178 return (len_a >= neff && len_b >= neff |
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179 && str_data_cmp<T> (str_a.data (), str_b, neff)); |
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180 } |
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181 |
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182 |
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183 template<typename T> |
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184 bool |
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185 octave::string::strncmpi (const T& str_a, const T& str_b, |
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186 const typename T::size_type n) |
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187 { |
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188 typename T::size_type neff; |
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189 auto len_a = numel (str_a); |
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190 auto len_b = numel (str_b); |
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191 neff = std::min (std::max (len_a, len_b), n); |
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192 |
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193 return (len_a >= neff && len_b >= neff |
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194 && str_data_cmpi<T> (str_a.data (), str_b.data (), neff)); |
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195 } |
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196 |
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197 template<typename T> |
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198 bool |
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199 octave::string::strncmpi (const T& str_a, const typename T::value_type *str_b, |
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200 const typename T::size_type n) |
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201 { |
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202 typename T::size_type neff; |
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203 auto len_a = numel (str_a); |
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204 auto len_b = strlen<T> (str_b); |
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205 neff = std::min (std::max (len_a, len_b), n); |
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206 |
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207 return (len_a >= neff && len_b >= neff |
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208 && str_data_cmpi<T> (str_a.data (), str_b, neff)); |
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209 } |
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210 |
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211 |
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212 // Instantiations we need |
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213 #define INSTANTIATE_OCTAVE_STRING(T, API) \ |
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214 template API bool octave::string::strcmp<T> (const T&, const T&); \ |
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215 template API bool \ |
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216 octave::string::strcmp<T> (const T&, const typename T::value_type*); \ |
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217 template API bool octave::string::strcmpi<T> (const T&, const T&); \ |
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218 template API bool \ |
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219 octave::string::strcmpi<T> (const T&, const typename T::value_type*); \ |
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220 template API bool \ |
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221 octave::string::strncmp<T> (const T&, const T&, \ |
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222 const typename T::size_type); \ |
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223 template API bool \ |
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224 octave::string::strncmp<T> (const T&, const typename T::value_type*, \ |
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225 const typename T::size_type); \ |
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226 template API bool \ |
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227 octave::string::strncmpi<T> (const T&, const T&, \ |
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228 const typename T::size_type n); \ |
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229 template API bool \ |
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230 octave::string::strncmpi<T> (const T&, const typename T::value_type*, \ |
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231 const typename T::size_type); |
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232 |
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233 // We could also instantiate std::vector<char> but would it be |
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234 // useful for anyone? |
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235 INSTANTIATE_OCTAVE_STRING(std::string, OCTAVE_API) |
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236 INSTANTIATE_OCTAVE_STRING(Array<char>, OCTAVE_API) |
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237 |
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238 #undef INSTANTIATE_OCTAVE_STRING |
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239 |
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240 static inline bool |
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241 is_imag_unit (int c) |
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242 { return c == 'i' || c == 'j'; } |
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243 |
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244 static double |
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245 single_num (std::istringstream& is) |
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246 { |
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247 double num = 0.0; |
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248 |
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249 char c = is.peek (); |
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250 |
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251 // Skip spaces. |
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252 while (isspace (c)) |
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253 { |
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254 is.get (); |
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255 c = is.peek (); |
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256 } |
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257 |
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258 if (std::toupper (c) == 'I') |
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259 { |
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260 // It's infinity. |
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261 is.get (); |
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262 char c1 = is.get (); |
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263 char c2 = is.get (); |
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264 if (std::tolower (c1) == 'n' && std::tolower (c2) == 'f') |
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265 { |
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266 num = octave::numeric_limits<double>::Inf (); |
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267 is.peek (); // May set EOF bit. |
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268 } |
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269 else |
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270 is.setstate (std::ios::failbit); // indicate that read has failed. |
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271 } |
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272 else if (c == 'N') |
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273 { |
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274 // It's NA or NaN |
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275 is.get (); |
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276 char c1 = is.get (); |
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277 if (c1 == 'A') |
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278 { |
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279 num = octave_NA; |
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280 is.peek (); // May set EOF bit. |
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281 } |
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282 else |
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283 { |
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284 char c2 = is.get (); |
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285 if (c1 == 'a' && c2 == 'N') |
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286 { |
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287 num = octave::numeric_limits<double>::NaN (); |
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288 is.peek (); // May set EOF bit. |
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289 } |
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290 else |
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291 is.setstate (std::ios::failbit); // indicate that read has failed. |
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292 } |
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293 } |
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294 else |
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295 is >> num; |
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296 |
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297 return num; |
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298 } |
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299 |
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300 static std::istringstream& |
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301 extract_num (std::istringstream& is, double& num, bool& imag, bool& have_sign) |
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302 { |
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303 have_sign = imag = false; |
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304 |
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305 char c = is.peek (); |
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306 |
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307 // Skip leading spaces. |
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308 while (isspace (c)) |
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309 { |
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310 is.get (); |
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311 c = is.peek (); |
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312 } |
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313 |
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314 bool negative = false; |
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315 |
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316 // Accept leading sign. |
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317 if (c == '+' || c == '-') |
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318 { |
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319 have_sign = true; |
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320 negative = c == '-'; |
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321 is.get (); |
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322 c = is.peek (); |
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323 } |
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324 |
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325 // Skip spaces after sign. |
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Move octave_str2double to liboctave (patch #9084).
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326 while (isspace (c)) |
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Move octave_str2double to liboctave (patch #9084).
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327 { |
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Move octave_str2double to liboctave (patch #9084).
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328 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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329 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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330 } |
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Move octave_str2double to liboctave (patch #9084).
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331 |
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Move octave_str2double to liboctave (patch #9084).
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332 // Imaginary number (i*num or just i), or maybe 'inf'. |
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Move octave_str2double to liboctave (patch #9084).
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333 if (c == 'i') |
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Move octave_str2double to liboctave (patch #9084).
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334 { |
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Move octave_str2double to liboctave (patch #9084).
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335 // possible infinity. |
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Move octave_str2double to liboctave (patch #9084).
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336 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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337 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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338 |
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Move octave_str2double to liboctave (patch #9084).
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339 if (is.eof ()) |
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Move octave_str2double to liboctave (patch #9084).
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340 { |
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Move octave_str2double to liboctave (patch #9084).
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341 // just 'i' and string is finished. Return immediately. |
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Move octave_str2double to liboctave (patch #9084).
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342 imag = true; |
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Move octave_str2double to liboctave (patch #9084).
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343 num = (negative ? -1.0 : 1.0); |
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Move octave_str2double to liboctave (patch #9084).
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344 return is; |
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345 } |
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Move octave_str2double to liboctave (patch #9084).
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346 else |
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Move octave_str2double to liboctave (patch #9084).
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347 { |
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Move octave_str2double to liboctave (patch #9084).
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348 if (std::tolower (c) != 'n') |
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349 imag = true; |
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Move octave_str2double to liboctave (patch #9084).
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350 is.unget (); |
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Move octave_str2double to liboctave (patch #9084).
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351 } |
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Move octave_str2double to liboctave (patch #9084).
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|
352 } |
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Move octave_str2double to liboctave (patch #9084).
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353 else if (c == 'j') |
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Move octave_str2double to liboctave (patch #9084).
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354 imag = true; |
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Move octave_str2double to liboctave (patch #9084).
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355 |
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Move octave_str2double to liboctave (patch #9084).
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356 // It's i*num or just i |
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Move octave_str2double to liboctave (patch #9084).
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357 if (imag) |
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Move octave_str2double to liboctave (patch #9084).
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358 { |
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Move octave_str2double to liboctave (patch #9084).
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359 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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360 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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361 // Skip spaces after imaginary unit. |
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Move octave_str2double to liboctave (patch #9084).
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362 while (isspace (c)) |
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Move octave_str2double to liboctave (patch #9084).
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363 { |
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Move octave_str2double to liboctave (patch #9084).
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364 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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365 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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366 } |
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Move octave_str2double to liboctave (patch #9084).
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367 |
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Move octave_str2double to liboctave (patch #9084).
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368 if (c == '*') |
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Move octave_str2double to liboctave (patch #9084).
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369 { |
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Move octave_str2double to liboctave (patch #9084).
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370 // Multiplier follows, we extract it as a number. |
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371 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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372 num = single_num (is); |
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373 if (is.good ()) |
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Move octave_str2double to liboctave (patch #9084).
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374 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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375 } |
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Move octave_str2double to liboctave (patch #9084).
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376 else |
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Move octave_str2double to liboctave (patch #9084).
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377 num = 1.0; |
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378 } |
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Move octave_str2double to liboctave (patch #9084).
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379 else |
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Move octave_str2double to liboctave (patch #9084).
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|
380 { |
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Move octave_str2double to liboctave (patch #9084).
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|
381 // It's num, num*i, or numi. |
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Move octave_str2double to liboctave (patch #9084).
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382 num = single_num (is); |
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Move octave_str2double to liboctave (patch #9084).
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|
383 if (is.good ()) |
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Move octave_str2double to liboctave (patch #9084).
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|
384 { |
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Move octave_str2double to liboctave (patch #9084).
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|
385 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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|
386 |
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Move octave_str2double to liboctave (patch #9084).
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|
387 // Skip spaces after number. |
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Move octave_str2double to liboctave (patch #9084).
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|
388 while (isspace (c)) |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
389 { |
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Move octave_str2double to liboctave (patch #9084).
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|
390 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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|
391 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
392 } |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
393 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
394 if (c == '*') |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
395 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
396 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
397 c = is.peek (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
398 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
399 // Skip spaces after operator. |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
400 while (isspace (c)) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
401 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
402 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
403 c = is.peek (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
404 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
405 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
406 if (is_imag_unit (c)) |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
407 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
408 imag = true; |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
409 is.get (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
410 c = is.peek (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
411 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
412 else |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
413 is.setstate (std::ios::failbit); // indicate read has failed. |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
414 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
415 else if (is_imag_unit (c)) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
416 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
417 imag = true; |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
418 is.get (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
419 c = is.peek (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
420 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
421 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
422 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
423 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
424 if (is.good ()) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
425 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
426 // Skip trailing spaces. |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
427 while (isspace (c)) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
428 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
429 is.get (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
430 c = is.peek (); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
431 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
432 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
433 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
434 if (negative) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
435 num = -num; |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
436 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
437 return is; |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
438 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
25831
diff
changeset
|
439 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
440 static inline void |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
441 set_component (Complex& c, double num, bool imag) |
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Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
442 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
443 #if defined (HAVE_CXX_COMPLEX_SETTERS) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
444 if (imag) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
445 c.imag (num); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
446 else |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
447 c.real (num); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
448 #elif defined (HAVE_CXX_COMPLEX_REFERENCE_ACCESSORS) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
449 if (imag) |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
450 c.imag () = num; |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
451 else |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
452 c.real () = num; |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
453 #else |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
454 if (imag) |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
455 c = Complex (c.real (), num); |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
456 else |
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Move octave_str2double to liboctave (patch #9084).
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|
457 c = Complex (num, c.imag ()); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
458 #endif |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
459 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
460 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
461 Complex |
26130
37e3aa267374
Move function str2double inside octave::string namespace (patch #9084).
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diff
changeset
|
462 octave::string::str2double (const std::string& str_arg) |
26113
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
463 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
464 Complex val (0.0, 0.0); |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
465 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
466 std::string str = str_arg; |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
467 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
468 // FIXME: removing all commas doesn't allow actual parsing. |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
469 // Example: "1,23.45" is wrong, but passes Octave. |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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|
470 str.erase (std::remove (str.begin (), str.end(), ','), str.end ()); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
471 std::istringstream is (str); |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
472 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
473 double num; |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
474 bool i1, i2, s1, s2; |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
475 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
476 if (is.eof ()) |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
477 val = octave::numeric_limits<double>::NaN (); |
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Move octave_str2double to liboctave (patch #9084).
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|
478 else if (! extract_num (is, num, i1, s1)) |
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Move octave_str2double to liboctave (patch #9084).
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|
479 val = octave::numeric_limits<double>::NaN (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
480 else |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
481 { |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
482 set_component (val, num, i1); |
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Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
483 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
484 if (! is.eof ()) |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
485 { |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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parents:
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changeset
|
486 if (! extract_num (is, num, i2, s2) || i1 == i2 || ! s2) |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
487 val = octave::numeric_limits<double>::NaN (); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
488 else |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
489 set_component (val, num, i2); |
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Move octave_str2double to liboctave (patch #9084).
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changeset
|
490 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
491 } |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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diff
changeset
|
492 |
b543cf12c63f
Move octave_str2double to liboctave (patch #9084).
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changeset
|
493 return val; |
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Move octave_str2double to liboctave (patch #9084).
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parents:
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diff
changeset
|
494 } |
26114
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
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parents:
26113
diff
changeset
|
495 |
26705
2dc190401eeb
Add C++ functions to convert encoding of strings (bug #55452).
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|
496 std::string |
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|
497 octave::string::u8_to_encoding (const std::string& who, |
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Add C++ functions to convert encoding of strings (bug #55452).
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|
498 const std::string& u8_string, |
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changeset
|
499 const std::string& encoding) |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
500 { |
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Add C++ functions to convert encoding of strings (bug #55452).
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|
501 const uint8_t *src = reinterpret_cast<const uint8_t *> |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
502 (u8_string.c_str ()); |
29659
d13d090cb03a
use std::size_t and std::ptrdiff_t in C++ code (bug #60471)
John W. Eaton <jwe@octave.org>
parents:
29363
diff
changeset
|
503 std::size_t srclen = u8_string.length (); |
26705
2dc190401eeb
Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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diff
changeset
|
504 |
29659
d13d090cb03a
use std::size_t and std::ptrdiff_t in C++ code (bug #60471)
John W. Eaton <jwe@octave.org>
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diff
changeset
|
505 std::size_t length; |
26705
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Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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changeset
|
506 char *native_str = octave_u8_conv_to_encoding (encoding.c_str (), src, |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
507 srclen, &length); |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
508 |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
509 if (! native_str) |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
510 { |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
511 if (errno == ENOSYS) |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
512 (*current_liboctave_error_handler) |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
513 ("%s: iconv() is not supported. Installing GNU libiconv and then " |
2dc190401eeb
Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
514 "re-compiling Octave could fix this.", who.c_str ()); |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
515 else |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
516 (*current_liboctave_error_handler) |
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changeset
|
517 ("%s: converting from UTF-8 to codepage '%s' failed: %s", |
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Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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diff
changeset
|
518 who.c_str (), encoding.c_str (), std::strerror (errno)); |
2dc190401eeb
Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
519 } |
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Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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diff
changeset
|
520 |
28856
1ac5a76ae91d
use [=] capture default specification where possible
John W. Eaton <jwe@octave.org>
parents:
28855
diff
changeset
|
521 octave::unwind_action free_native_str ([=] () { ::free (native_str); }); |
26705
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
522 |
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changeset
|
523 std::string retval = std::string (native_str, length); |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
524 |
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changeset
|
525 return retval; |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
526 } |
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diff
changeset
|
527 |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
528 std::string |
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changeset
|
529 octave::string::u8_from_encoding (const std::string& who, |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
530 const std::string& native_string, |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
531 const std::string& encoding) |
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Add C++ functions to convert encoding of strings (bug #55452).
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changeset
|
532 { |
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Add C++ functions to convert encoding of strings (bug #55452).
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diff
changeset
|
533 const char *src = native_string.c_str (); |
29659
d13d090cb03a
use std::size_t and std::ptrdiff_t in C++ code (bug #60471)
John W. Eaton <jwe@octave.org>
parents:
29363
diff
changeset
|
534 std::size_t srclen = native_string.length (); |
26705
2dc190401eeb
Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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diff
changeset
|
535 |
29659
d13d090cb03a
use std::size_t and std::ptrdiff_t in C++ code (bug #60471)
John W. Eaton <jwe@octave.org>
parents:
29363
diff
changeset
|
536 std::size_t length; |
26705
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Add C++ functions to convert encoding of strings (bug #55452).
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parents:
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diff
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|
537 uint8_t *utf8_str = octave_u8_conv_from_encoding (encoding.c_str (), src, |
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538 srclen, &length); |
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539 if (! utf8_str) |
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540 { |
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541 if (errno == ENOSYS) |
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542 (*current_liboctave_error_handler) |
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543 ("%s: iconv() is not supported. Installing GNU libiconv and then " |
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544 "re-compiling Octave could fix this.", who.c_str ()); |
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545 else |
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546 (*current_liboctave_error_handler) |
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547 ("%s: converting from codepage '%s' to UTF-8 failed: %s", |
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548 who.c_str (), encoding.c_str (), std::strerror (errno)); |
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549 } |
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550 |
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551 octave::unwind_action free_utf8_str ([=] () { ::free (utf8_str); }); |
26705
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552 |
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553 std::string retval = std::string (reinterpret_cast<char *> (utf8_str), length); |
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554 |
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555 return retval; |
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556 } |
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557 |
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558 unsigned int |
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559 octave::string::u8_validate (const std::string& who, |
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560 std::string& in_str, |
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561 const octave::string::u8_fallback_type type) |
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562 { |
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563 std::string out_str; |
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564 |
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565 unsigned int num_replacements = 0; |
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566 const char *in_chr = in_str.c_str (); |
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567 const char *inv_utf8 = in_chr; |
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568 const char *const in_end = in_chr + in_str.length (); |
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569 while (inv_utf8 && in_chr < in_end) |
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570 { |
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571 inv_utf8 = reinterpret_cast<const char *> |
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572 (octave_u8_check_wrapper (reinterpret_cast<const uint8_t *> (in_chr), |
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573 in_end - in_chr)); |
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574 |
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575 if (inv_utf8 == nullptr) |
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576 out_str.append (in_chr, in_end - in_chr); |
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577 else |
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578 { |
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579 num_replacements++; |
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580 out_str.append (in_chr, inv_utf8 - in_chr); |
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581 in_chr = inv_utf8 + 1; |
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582 |
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583 if (type == U8_REPLACEMENT_CHAR) |
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584 out_str.append ("\xef\xbf\xbd"); |
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585 else if (type == U8_ISO_8859_1) |
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586 { |
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587 std::string fallback = "iso-8859-1"; |
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588 std::size_t lengthp; |
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589 uint8_t *val_utf8 = octave_u8_conv_from_encoding |
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590 (fallback.c_str (), inv_utf8, 1, &lengthp); |
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591 |
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592 if (! val_utf8) |
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593 (*current_liboctave_error_handler) |
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|
594 ("%s: converting from codepage '%s' to UTF-8 failed: %s", |
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595 who.c_str (), fallback.c_str (), std::strerror (errno)); |
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diff
changeset
|
596 |
28829
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Replace unwind_protect with more efficient constructs in liboctave (bug #59192).
Rik <rik@octave.org>
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|
597 octave::unwind_action free_val_utf8 |
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598 ([=] () { ::free (val_utf8); }); |
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|
599 |
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600 out_str.append (reinterpret_cast<const char *> (val_utf8), |
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|
601 lengthp); |
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602 } |
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603 } |
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604 } |
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|
605 |
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606 in_str = out_str; |
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607 return num_replacements; |
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608 } |
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|
609 |
30827
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610 typedef octave::string::codecvt_u8::InternT InternT; |
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611 typedef octave::string::codecvt_u8::ExternT ExternT; |
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612 typedef octave::string::codecvt_u8::StateT StateT; |
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613 |
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614 typename std::codecvt<InternT, ExternT, StateT>::result |
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615 octave::string::codecvt_u8::do_out |
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616 (StateT& /* state */, |
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617 const InternT* from, const InternT* from_end, const InternT*& from_next, |
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618 ExternT* to, ExternT* to_end, ExternT*& to_next) const |
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619 { |
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620 if (from_end < from) |
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621 return std::codecvt<InternT, ExternT, StateT>::noconv; |
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622 |
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|
623 // Convert from UTF-8 to output encoding |
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624 std::size_t srclen = (from_end-from) * sizeof (InternT); |
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625 std::size_t lengthp = (to_end-to) * sizeof (ExternT); |
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626 const uint8_t *u8_str = reinterpret_cast<const uint8_t *> (from); |
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627 char *enc_str = octave_u8_conv_to_encoding (m_enc.c_str (), u8_str, srclen, |
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628 &lengthp); |
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|
629 |
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630 size_t max = to_end - to; |
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631 if (lengthp < max) |
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632 max = lengthp; |
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|
633 |
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634 // copy conversion result to output |
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635 // FIXME: Handle incomplete UTF-8 characters at end of buffer. |
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636 std::copy_n (enc_str, max, to); |
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637 ::free (enc_str); |
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638 |
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639 from_next = from + srclen; |
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640 to_next = to + max; |
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641 |
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642 return std::codecvt<InternT, ExternT, StateT>::ok; |
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643 } |
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644 |
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645 typename std::codecvt<InternT, ExternT, StateT>::result |
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646 octave::string::codecvt_u8::do_in |
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647 (StateT& /* state */, |
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648 const ExternT* from, const ExternT* from_end, const ExternT*& from_next, |
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649 InternT* to, InternT* to_end, InternT*& to_next) const |
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650 { |
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651 // Convert from input encoding to UTF-8 |
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652 std::size_t srclen = (from_end-from) * sizeof (ExternT); |
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653 std::size_t lengthp = (to_end-to) * sizeof (InternT); |
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654 const char *enc_str = reinterpret_cast<const char *> (from); |
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655 uint8_t *u8_str = octave_u8_conv_from_encoding (m_enc.c_str (), |
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656 enc_str, srclen, &lengthp); |
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657 |
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658 std::size_t max = to_end - to; |
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659 if (lengthp < max) |
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660 max = lengthp; |
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661 |
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662 // copy conversion result to output |
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663 std::copy_n (u8_str, max, to); |
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664 ::free (u8_str); |
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665 |
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666 from_next = from + srclen; |
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667 to_next = to + max; |
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668 |
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669 return std::codecvt<InternT, ExternT, StateT>::ok; |
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670 } |
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671 |
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672 int octave::string::codecvt_u8::do_length |
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673 (StateT& /* state */, const ExternT *src, const ExternT *end, |
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674 std::size_t max) const |
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675 { |
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676 // return number of external characters that produce MAX internal ones |
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677 std::size_t srclen = end-src; |
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678 std::size_t offsets[srclen]; |
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679 std::size_t lengthp = max; |
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680 octave_u8_conv_from_encoding_offsets (m_enc.c_str (), src, srclen, offsets, |
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681 &lengthp); |
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682 std::size_t ext_char; |
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683 for (ext_char = 0; ext_char < srclen; ext_char++) |
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684 { |
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685 if (offsets[ext_char] != static_cast<size_t> (-1) |
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686 && offsets[ext_char] >= max) |
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687 break; |
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688 } |
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689 |
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690 return ext_char; |
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691 } |
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692 |
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693 |
26114
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694 template <typename T> |
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695 std::string |
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696 rational_approx (T val, int len) |
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697 { |
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698 std::string s; |
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699 |
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700 if (len <= 0) |
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701 len = 10; |
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702 |
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703 if (octave::math::isinf (val)) |
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704 { |
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705 if (val > 0) |
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706 s = "1/0"; |
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707 else |
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708 s = "-1/0"; |
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709 } |
26114
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710 else if (octave::math::isnan (val)) |
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711 s = "0/0"; |
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712 else if (val < std::numeric_limits<int>::min () |
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713 || val > std::numeric_limits<int>::max () |
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714 || octave::math::x_nint (val) == val) |
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|
715 { |
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716 std::ostringstream buf; |
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717 buf.flags (std::ios::fixed); |
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718 buf << std::setprecision (0) << octave::math::round (val); |
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719 s = buf.str (); |
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720 } |
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721 else |
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changeset
|
722 { |
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723 T lastn = 1; |
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724 T lastd = 0; |
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|
725 T n = octave::math::round (val); |
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726 T d = 1; |
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727 T frac = val - n; |
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728 int m = 0; |
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changeset
|
729 |
27478
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Display '*' rather than '0' for small rational approximations (bug #56941)
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|
730 std::ostringstream init_buf; |
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731 init_buf.flags (std::ios::fixed); |
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732 init_buf << std::setprecision (0) << static_cast<int> (n); |
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|
733 s = init_buf.str (); |
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734 |
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735 while (true) |
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|
736 { |
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Move rational_approx to liboctave (patch #9084).
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|
737 T flip = 1 / frac; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
738 T step = octave::math::round (flip); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
739 T nextn = n; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
740 T nextd = d; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
741 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
742 // Have we converged to 1/intmax ? |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
743 if (std::abs (flip) > static_cast<T> (std::numeric_limits<int>::max ())) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
744 { |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
745 lastn = n; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
746 lastd = d; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
747 break; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
748 } |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
749 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
750 frac = flip - step; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
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parents:
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changeset
|
751 n = step * n + lastn; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
752 d = step * d + lastd; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
753 lastn = nextn; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
754 lastd = nextd; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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|
755 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
756 std::ostringstream buf; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
757 buf.flags (std::ios::fixed); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
758 buf << std::setprecision (0) << static_cast<int> (n) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
759 << '/' << static_cast<int> (d); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
760 m++; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
761 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
762 if (n < 0 && d < 0) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
763 { |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
764 // Double negative, string can be two characters longer. |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
765 if (buf.str ().length () > static_cast<unsigned int> (len + 2)) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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changeset
|
766 break; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
767 } |
27478
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
768 else |
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
769 { |
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
770 if (buf.str ().length () > static_cast<unsigned int> (len)) |
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
771 break; |
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
772 } |
26114
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
773 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
774 if (std::abs (n) > std::numeric_limits<int>::max () |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
775 || std::abs (d) > std::numeric_limits<int>::max ()) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
776 break; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
777 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
778 s = buf.str (); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
779 } |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
780 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
781 if (lastd < 0) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
782 { |
27478
d503426130bf
Display '*' rather than '0' for small rational approximations (bug #56941)
Rik <rik@octave.org>
parents:
26705
diff
changeset
|
783 // Move negative sign from denominator to numerator |
26114
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
784 lastd = - lastd; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
785 lastn = - lastn; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
786 std::ostringstream buf; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
787 buf.flags (std::ios::fixed); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
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changeset
|
788 buf << std::setprecision (0) << static_cast<int> (lastn) |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
789 << '/' << static_cast<int> (lastd); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
790 s = buf.str (); |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
791 } |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
792 } |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
793 |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
794 return s; |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
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diff
changeset
|
795 } |
3e44ed9d50b6
Move rational_approx to liboctave (patch #9084).
Markus Mützel <markus.muetzel@gmx.de>
parents:
26113
diff
changeset
|
796 |
27961
2310164737b3
fix many spelling errors (bug #57613)
John W. Eaton <jwe@octave.org>
parents:
26379
diff
changeset
|
797 // instantiate the template for float and double |
29235
6b3faa844395
Set API tags in files in liboctave/util (patch #8919).
Markus Mützel <markus.muetzel@gmx.de>
parents:
28856
diff
changeset
|
798 template OCTAVE_API std::string rational_approx <float> (float val, int len); |
6b3faa844395
Set API tags in files in liboctave/util (patch #8919).
Markus Mützel <markus.muetzel@gmx.de>
parents:
28856
diff
changeset
|
799 template OCTAVE_API std::string rational_approx <double> (double val, int len); |