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annotate libinterp/corefcn/ls-oct-text.cc @ 30006:75dff8f2de2e

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move some load-save utilities to octave namespace * ls-ascii-helper.h, ls-ascii-helper.cc (skip_until_newline, read_until_newline, skip_preceeding_newline): Move inside octave namespace. Change all uses as needed. Provide deprecated inline wrapper functions to preserve old names. * ls-utils.h, ls-utils.cc (get_save_type): Move inside octave namespace. Change all uses as needed. Provide deprecated inline wrapper functions to preserve old names.
author John W. Eaton <jwe@octave.org>
date Wed, 18 Aug 2021 15:47:29 -0400
parents 428cccc75cc9
children 796f54d4ddbf
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rev   line source
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2021 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 <cstring>
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31 #include <cctype>
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32
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33 #include <fstream>
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34 #include <iomanip>
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35 #include <istream>
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36 #include <ostream>
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37 #include <sstream>
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38 #include <string>
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39
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40 #include "byte-swap.h"
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41 #include "data-conv.h"
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42 #include "file-ops.h"
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43 #include "glob-match.h"
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44 #include "lo-mappers.h"
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45 #include "mach-info.h"
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46 #include "oct-env.h"
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47 #include "oct-time.h"
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48 #include "quit.h"
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49 #include "str-vec.h"
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50
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51 #include "Cell.h"
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52 #include "defun.h"
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53 #include "error.h"
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54 #include "errwarn.h"
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55 #include "interpreter.h"
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56 #include "interpreter-private.h"
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57 #include "load-save.h"
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58 #include "ls-ascii-helper.h"
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59 #include "ls-oct-text.h"
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60 #include "ovl.h"
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61 #include "oct-map.h"
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62 #include "ov-cell.h"
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63 #include "pager.h"
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64 #include "unwind-prot.h"
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65 #include "utils.h"
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66 #include "variables.h"
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67 #include "version.h"
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68 #include "dMatrix.h"
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69
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70 // The number of decimal digits to use when writing ASCII data.
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71 // 17 is the minimum necessary for lossless save/restore of IEEE-754 doubles.
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72 static int Vsave_precision = 17;
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73
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74 // Functions for reading octave format text data.
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75
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76 // Extract a KEYWORD and its value from stream IS, returning the
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77 // associated value in a new string.
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78 //
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79 // Input should look something like:
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80 //
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81 // [%#][ \t]*keyword[ \t]*:[ \t]*string-value[ \t]*\n
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82
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83 std::string
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84 extract_keyword (std::istream& is, const char *keyword, const bool next_only)
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85 {
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86 std::string retval;
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87
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88 int ch = is.peek ();
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89 if (next_only && ch != '%' && ch != '#')
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90 return retval;
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91
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92 char c;
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93 while (is.get (c))
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94 {
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95 if (c == '%' || c == '#')
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96 {
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97 std::ostringstream buf;
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98
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99 while (is.get (c) && (c == ' ' || c == '\t' || c == '%' || c == '#'))
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100 ; // Skip whitespace and comment characters.
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101
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102 if (isalpha (c))
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103 buf << c;
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104
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105 while (is.get (c) && isalpha (c))
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106 buf << c;
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107
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108 std::string tmp = buf.str ();
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109 bool match = (tmp.substr (0, strlen (keyword)) == keyword);
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110
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111 if (match)
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112 {
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113 std::ostringstream value;
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114 while (is.get (c) && (c == ' ' || c == '\t' || c == ':'))
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115 ; // Skip whitespace and the colon.
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116
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117 is.putback (c);
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118 retval = octave::read_until_newline (is, false);
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119 break;
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120 }
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121 else if (next_only)
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122 break;
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123 else
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124 octave::skip_until_newline (is, false);
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125 }
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126 }
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127
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128 int len = retval.length ();
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129
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130 if (len > 0)
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131 {
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132 while (len)
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133 {
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134 c = retval[len-1];
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135
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136 if (c == ' ' || c == '\t')
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137 len--;
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138 else
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139 {
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140 retval.resize (len);
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141 break;
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142 }
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143 }
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144 }
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145
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146 return retval;
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147 }
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148
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149 // Extract one value (scalar, matrix, string, etc.) from stream IS and
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150 // place it in TC, returning the name of the variable. If the value
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151 // is tagged as global in the file, return TRUE in GLOBAL.
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152 //
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153 // Each type supplies its own function to load the data, and so this
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154 // function is extensible.
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155 //
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156 // FILENAME is used for error messages.
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157 //
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158 // The data is expected to be in the following format:
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159 //
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160 // The input file must have a header followed by some data.
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161 //
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162 // All lines in the header must begin with a '#' character.
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163 //
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164 // The header must contain a list of keyword and value pairs with the
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165 // keyword and value separated by a colon.
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166 //
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167 // Keywords must appear in the following order:
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168 //
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169 // # name: <name>
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170 // # type: <type>
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171 // # <info>
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172 //
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173 // Where, for the built in types are:
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174 //
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175 // <name> : a valid identifier
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176 //
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177 // <type> : <typename>
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178 // | global <typename>
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179 //
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180 // <typename> : scalar
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181 // | complex scalar
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182 // | matrix
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183 // | complex matrix
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184 // | bool
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185 // | bool matrix
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186 // | string
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187 // | range
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188 //
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189 // <info> : <matrix info>
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190 // | <string info>
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191 //
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192 // <matrix info> : # rows: <integer>
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193 // : # columns: <integer>
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194 //
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195 // <string info> : # elements: <integer>
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196 // : # length: <integer> (once before each string)
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197 //
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198 // For backward compatibility the type "string array" is treated as a
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199 // "string" type. Also "string" can have a single element with no elements
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200 // line such that
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201 //
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202 // <string info> : # length: <integer>
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203 //
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204 // Formatted ASCII data follows the header.
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205 //
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206 // Example:
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207 //
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208 // # name: foo
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209 // # type: matrix
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210 // # rows: 2
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211 // # columns: 2
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212 // 2 4
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213 // 1 3
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214 //
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215 // Example:
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216 //
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217 // # name: foo
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218 // # type: string
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219 // # elements: 5
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220 // # length: 4
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221 // this
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222 // # length: 2
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223 // is
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224 // # length: 1
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225 // a
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226 // # length: 6
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227 // string
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228 // # length: 5
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229 // array
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230 //
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231 // FIXME: This format is fairly rigid, and doesn't allow for arbitrary comments.
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232 // Someone should fix that. It does allow arbitrary types however.
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233
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234 // Ugh. The signature of the compare method is not standard in older
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235 // versions of the GNU libstdc++. Do this instead:
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236
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237 #define SUBSTRING_COMPARE_EQ(s, pos, n, t) (s.substr (pos, n) == (t))
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238
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239 static octave_value
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240 load_inline_fcn (std::istream& is, const std::string& filename)
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241 {
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242 int nargs;
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243 if (extract_keyword (is, "nargs", nargs, true))
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244 {
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245 std::string name;
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246 octave_value_list args (nargs+1);
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247 for (int i = 0; i < nargs; i++)
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248 {
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249 std::string tmp;
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250 is >> tmp;
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251 args(i+1) = tmp;
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252 }
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253 is >> name;
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254 if (name == "0")
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255 name = "";
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256
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257 octave::skip_preceeding_newline (is);
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258
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259 std::string buf;
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260
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261 if (is)
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262 {
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263
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264 // Get a line of text whitespace characters included,
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265 // leaving newline in the stream.
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266 buf = octave::read_until_newline (is, true);
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267 }
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268
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269 if (is)
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270 {
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271 args(0) = std::string (buf);
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272
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273 octave::interpreter& interp
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274 = octave::__get_interpreter__ ("load_inline_fcn");
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275
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276 octave_value_list tmp = interp.feval ("inline", args, 1);
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277
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278 if (tmp.length () > 0)
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279 return tmp(0);
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280 }
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281 }
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282
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283 error ("load: trouble reading ascii file '%s'", filename.c_str ());
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284 }
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285
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286 std::string
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287 read_text_data (std::istream& is, const std::string& filename, bool& global,
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288 octave_value& tc, octave_idx_type count,
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289 const bool do_name_validation)
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290 {
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291 // Read name for this entry or break on EOF.
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292
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293 std::string name = extract_keyword (is, "name");
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294
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295 if (name.empty ())
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296 {
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297 if (count == 0)
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298 error ("load: empty name keyword or no data found in file '%s'",
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299 filename.c_str ());
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300
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301 return "";
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302 }
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303
28161
ef349f5c320b Load structures with arbitrary string fieldnames (bug #50831, bug #46645).
Olaf Till <i7tiol@t-online.de>
parents: 27978
diff changeset
304 if (name != CELL_ELT_TAG
ef349f5c320b Load structures with arbitrary string fieldnames (bug #50831, bug #46645).
Olaf Till <i7tiol@t-online.de>
parents: 27978
diff changeset
305 && do_name_validation && ! octave::valid_identifier (name))
20835
14cd86258b3d use 'invalid' instead of 'bogus' in source files
John W. Eaton <jwe@octave.org>
parents: 20831
diff changeset
306 error ("load: invalid identifier '%s' found in file '%s'",
20741
a5ab31b52ae8 eliminate more uses of error_state
John W. Eaton <jwe@octave.org>
parents: 20447
diff changeset
307 name.c_str (), filename.c_str ());
4634
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jwe
parents:
diff changeset
308
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
309 // Look for type keyword.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
310
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
311 std::string tag = extract_keyword (is, "type");
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
312
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
313 if (tag.empty ())
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
314 error ("load: failed to extract keyword specifying value type");
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
315
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
316 std::string typ;
29572
aef11bb4e6d1 use std::size_t and std::ptrdiff_t in C++ code (bug #60471)
John W. Eaton <jwe@octave.org>
parents: 29358
diff changeset
317 std::size_t pos = tag.rfind (' ');
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
318
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
319 if (pos != std::string::npos)
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
320 {
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
321 global = SUBSTRING_COMPARE_EQ (tag, 0, 6, "global");
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
322
23450
855122b993da maint: Wrap tertiary operator in parentheses "(COND ? x : y)".
Rik <rik@octave.org>
parents: 23220
diff changeset
323 typ = (global ? tag.substr (7) : tag);
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
324 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
325 else
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
326 typ = tag;
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
327
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
328 // Special case for backward compatibility. A small bit of cruft
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
329 if (SUBSTRING_COMPARE_EQ (typ, 0, 12, "string array"))
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
330 tc = charMatrix ();
28427
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
331 else if (SUBSTRING_COMPARE_EQ (typ, 0, 15, "inline function"))
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
332 {
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
333 // Special case for loading old octave_inline_fcn objects.
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
334 tc = load_inline_fcn (is, filename);
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
335 return name;
7a8c69c4eb55 convert obsolete octave_fcn_inline object to @inline class
John W. Eaton <jwe@octave.org>
parents: 28161
diff changeset
336 }
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
337 else
24540
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
338 {
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
339 octave::type_info& type_info
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
340 = octave::__get_type_info__ ("read_text_data");
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
341
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
342 tc = type_info.lookup_type (typ);
46440078d73b don't use singleton for octave_value_typeinfo
John W. Eaton <jwe@octave.org>
parents: 24534
diff changeset
343 }
20981
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
344
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
345 if (! tc.load_ascii (is))
c11cea70b638 maint: invert if/else/error instances.
John W. Eaton <jwe@octave.org>
parents: 20962
diff changeset
346 error ("load: trouble reading ascii file '%s'", filename.c_str ());
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
347
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
348 return name;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
349 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
350
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
351 // Save the data from TC along with the corresponding NAME, and global
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
352 // flag MARK_AS_GLOBAL on stream OS in the plain text format described
20447
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
353 // above for load_text_data. If NAME is empty, the name: line is not
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
354 // generated. PRECISION specifies the number of decimal digits to print.
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
355 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
356 // Assumes ranges and strings cannot contain Inf or NaN values.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
357 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
358 // Returns 1 for success and 0 for failure.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
359
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
360 // FIXME: should probably write the help string here too.
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
361
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
362 bool
20447
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
363 save_text_data (std::ostream& os, const octave_value& val_arg,
23470
a41fdb801db6 use mark_global and mark_persistent consistently
John W. Eaton <jwe@octave.org>
parents: 23450
diff changeset
364 const std::string& name, bool mark_global,
20447
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
365 int precision)
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
366 {
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
367 if (! name.empty ())
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
368 os << "# name: " << name << "\n";
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
369
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
370 octave_value val = val_arg;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
371
23470
a41fdb801db6 use mark_global and mark_persistent consistently
John W. Eaton <jwe@octave.org>
parents: 23450
diff changeset
372 if (mark_global)
4687
e95c86d48732 [project @ 2004-01-06 21:53:34 by jwe]
jwe
parents: 4634
diff changeset
373 os << "# type: global " << val.type_name () << "\n";
e95c86d48732 [project @ 2004-01-06 21:53:34 by jwe]
jwe
parents: 4634
diff changeset
374 else
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
375 os << "# type: " << val.type_name () << "\n";
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
376
5951
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
377 if (! precision)
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
378 precision = Vsave_precision;
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
379
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
380 long old_precision = os.precision ();
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
381 os.precision (precision);
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
jwe
parents: 5794
diff changeset
382
26410
d644dec272ea ls-oct-text.cc: Fix static analyzer detected V519 issue (bug #55347).
Andreas Weber <octave@josoansi.de>
parents: 26376
diff changeset
383 bool success = val.save_ascii (os);
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
384
10417
ad29dbbc3f70 save: make that two newline characters
John W. Eaton <jwe@octave.org>
parents: 10416
diff changeset
385 // Insert an extra pair of newline characters after the data so that
ad29dbbc3f70 save: make that two newline characters
John W. Eaton <jwe@octave.org>
parents: 10416
diff changeset
386 // multiple data elements may be handled separately by gnuplot (see
ad29dbbc3f70 save: make that two newline characters
John W. Eaton <jwe@octave.org>
parents: 10416
diff changeset
387 // the description of the index qualifier for the plot command in the
ad29dbbc3f70 save: make that two newline characters
John W. Eaton <jwe@octave.org>
parents: 10416
diff changeset
388 // gnuplot documentation).
ad29dbbc3f70 save: make that two newline characters
John W. Eaton <jwe@octave.org>
parents: 10416
diff changeset
389 os << "\n\n";
10416
f06ede00fd8f save: separate variables by blank line in Octave text format files
John W. Eaton <jwe@octave.org>
parents: 10315
diff changeset
390
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
391 os.precision (old_precision);
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
392
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
393 return (os && success);
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
394 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
395
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
396 bool
20447
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
397 save_text_data_for_plotting (std::ostream& os, const octave_value& t,
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
398 const std::string& name)
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
399 {
20447
c6224b4e7774 maint: Rename instances of LS_ASCII to LS_TEXT for clarity.
Rik <rik@octave.org>
parents: 20428
diff changeset
400 return save_text_data (os, t, name, false, 6);
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
401 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
402
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
403 // Maybe this should be a static function in tree-plot.cc?
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
404
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
405 // If TC is matrix, save it on stream OS in a format useful for
21014
b9d4c3615e89 maint: Capitalize D for dimension in messages and comments.
Rik <rik@octave.org>
parents: 20981
diff changeset
406 // making a 3-D plot with gnuplot. If PARAMETRIC is TRUE,
b9d4c3615e89 maint: Capitalize D for dimension in messages and comments.
Rik <rik@octave.org>
parents: 20981
diff changeset
407 // assume a parametric 3-D plot will be generated.
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
408
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
409 bool
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
410 save_three_d (std::ostream& os, const octave_value& tc, bool parametric)
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
411 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5103
diff changeset
412 octave_idx_type nr = tc.rows ();
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 5103
diff changeset
413 octave_idx_type nc = tc.columns ();
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
414
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
415 if (! tc.is_real_matrix ())
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
416 error ("for now, I can only save real matrices in 3-D format");
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
417
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
418 os << "# 3-D data...\n"
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
419 << "# type: matrix\n"
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
420 << "# total rows: " << nr << "\n"
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
421 << "# total columns: " << nc << "\n";
6171
4508e9d73ea1 [project @ 2006-11-15 20:03:18 by jwe]
jwe
parents: 5958
diff changeset
422
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
423 long old_precision = os.precision ();
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
424 os.precision (6);
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
425
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
426 if (parametric)
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
427 {
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
428 octave_idx_type extras = nc % 3;
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
429 if (extras)
26164
7f6a50f73625 Silence compiler warnings about format identifier for octave_idx_type (bug #55046).
Markus Mützel <markus.muetzel@gmx.de>
parents: 25646
diff changeset
430 warning ("ignoring last %" OCTAVE_IDX_TYPE_FORMAT " columns", extras);
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
431
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
432 Matrix tmp = tc.matrix_value ();
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
433 nr = tmp.rows ();
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
434
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
435 for (octave_idx_type i = 0; i < nc-extras; i += 3)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
436 {
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
437 os << tmp.extract (0, i, nr-1, i+2);
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
438 if (i+3 < nc-extras)
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
439 os << "\n";
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
440 }
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
441 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
442 else
20962
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
443 {
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
444 Matrix tmp = tc.matrix_value ();
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
445 nr = tmp.rows ();
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
446
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
447 for (octave_idx_type i = 0; i < nc; i++)
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
448 {
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
parents: 20940
diff changeset
449 os << tmp.extract (0, i, nr-1, i);
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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450 if (i+1 < nc)
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451 os << "\n";
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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452 }
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
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diff changeset
453 }
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
Rik <rik@octave.org>
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diff changeset
454
3aa293be0e8d maint: Invert simple conditionals in if/else/error paradigm.
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parents: 20940
diff changeset
455 os.precision (old_precision);
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456
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88dd00f48522 Fix compilation error in 73ce195bf66e.
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diff changeset
457 return (static_cast<bool> (os));
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458 }
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459
29958
32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 29572
diff changeset
460 OCTAVE_NAMESPACE_BEGIN
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diff changeset
461
5794
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jwe
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diff changeset
462 DEFUN (save_precision, args, nargout,
21966
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diff changeset
463 doc: /* -*- texinfo -*-
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diff changeset
464 @deftypefn {} {@var{val} =} save_precision ()
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diff changeset
465 @deftypefnx {} {@var{old_val} =} save_precision (@var{new_val})
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diff changeset
466 @deftypefnx {} {} save_precision (@var{new_val}, "local")
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parents: 21751
diff changeset
467 Query or set the internal variable that specifies the number of digits to
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21751
diff changeset
468 keep when saving data in text format.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21751
diff changeset
469
23556
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
470 The default value is 17 which is the minimum necessary for the lossless saving
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
471 and restoring of IEEE-754 double values; For IEEE-754 single values the minimum
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
472 value is 9. If file size is a concern, it is probably better to choose a
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
473 binary format for saving data rather than to reduce the precision of the saved
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
474 values.
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
475
21966
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John W. Eaton <jwe@octave.org>
parents: 21751
diff changeset
476 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
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parents: 21751
diff changeset
477 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21751
diff changeset
478 The original variable value is restored when exiting the function.
23556
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
479
31b1ef1ee585 Fix Octave's -text format for saving data to make it lossless for IEEE-754 doubles.
Rik <rik@octave.org>
parents: 23470
diff changeset
480 @seealso{save_default_options}
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parents: 21751
diff changeset
481 @end deftypefn */)
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diff changeset
482 {
30001
428cccc75cc9 move most functions in variables.cc to octave namespace
John W. Eaton <jwe@octave.org>
parents: 29958
diff changeset
483 return set_internal_variable (Vsave_precision, args, nargout,
428cccc75cc9 move most functions in variables.cc to octave namespace
John W. Eaton <jwe@octave.org>
parents: 29958
diff changeset
484 "save_precision", -1,
428cccc75cc9 move most functions in variables.cc to octave namespace
John W. Eaton <jwe@octave.org>
parents: 29958
diff changeset
485 std::numeric_limits<int>::max ());
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diff changeset
486 }
29958
32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 29572
diff changeset
487
32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 29572
diff changeset
488 OCTAVE_NAMESPACE_END