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annotate src/ls-mat-ascii.cc @ 11523:fd0a3ac60b0e

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update copyright notices
author John W. Eaton <jwe@octave.org>
date Fri, 14 Jan 2011 05:47:45 -0500
parents 57a59eae83cc
children 12df7854fa7c
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1 /*
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2
11523
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3 Copyright (C) 1996-2011 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include <cfloat>
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28 #include <cstring>
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29 #include <cctype>
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30
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31 #include <fstream>
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32 #include <iomanip>
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33 #include <iostream>
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34 #include <sstream>
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35 #include <string>
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36
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37 #include "byte-swap.h"
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38 #include "data-conv.h"
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39 #include "file-ops.h"
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40 #include "glob-match.h"
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41 #include "lo-mappers.h"
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42 #include "mach-info.h"
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43 #include "oct-env.h"
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44 #include "oct-time.h"
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45 #include "quit.h"
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46 #include "str-vec.h"
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47
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48 #include "Cell.h"
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49 #include "defun.h"
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50 #include "error.h"
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51 #include "gripes.h"
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52 #include "lex.h"
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53 #include "load-save.h"
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54 #include "ls-ascii-helper.h"
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55 #include "ls-mat-ascii.h"
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56 #include "oct-obj.h"
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57 #include "oct-map.h"
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58 #include "ov-cell.h"
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59 #include "pager.h"
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60 #include "pt-exp.h"
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61 #include "sysdep.h"
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62 #include "unwind-prot.h"
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63 #include "utils.h"
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64 #include "variables.h"
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65 #include "version.h"
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66 #include "dMatrix.h"
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67
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68 static std::string
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69 get_mat_data_input_line (std::istream& is)
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70 {
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71 std::string retval;
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72
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73 bool have_data = false;
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74
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75 do
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76 {
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77 retval = "";
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78
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79 char c;
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80 while (is.get (c))
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81 {
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82 if (c == '\n' || c == '\r')
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83 {
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84 is.putback (c);
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85 skip_preceeding_newline (is);
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86 break;
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87 }
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88
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89 if (c == '%' || c == '#')
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90 {
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91 skip_until_newline (is, false);
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92 break;
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93 }
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94
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95 if (! is.eof ())
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96 {
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97 if (! have_data && c != ' ' && c != '\t')
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98 have_data = true;
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99
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100 retval += c;
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101 }
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102 }
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103 }
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104 while (! (have_data || is.eof ()));
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105
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106 return retval;
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107 }
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108
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109 static void
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110 get_lines_and_columns (std::istream& is, const std::string& filename, octave_idx_type& nr, octave_idx_type& nc)
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111 {
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112 std::streampos pos = is.tellg ();
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113
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114 int file_line_number = 0;
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115
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116 nr = 0;
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117 nc = 0;
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118
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119 while (is && ! error_state)
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120 {
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121 octave_quit ();
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122
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123 std::string buf = get_mat_data_input_line (is);
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124
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125 file_line_number++;
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126
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127 size_t beg = buf.find_first_not_of (", \t");
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128
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129 // If we see a CR as the last character in the buffer, we had a
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130 // CRLF pair as the line separator. Any other CR in the text
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131 // will not be considered as whitespace.
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132
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133 if (beg != std::string::npos && buf[beg] == '\r' && beg == buf.length () - 1)
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134 {
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135 // We had a blank line ending with a CRLF. Handle it the
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136 // same as an empty line.
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137 beg = std::string::npos;
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138 }
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139
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140 octave_idx_type tmp_nc = 0;
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141
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142 while (beg != std::string::npos)
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143 {
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144 tmp_nc++;
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145
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146 size_t end = buf.find_first_of (", \t", beg);
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147
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148 if (end != std::string::npos)
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149 {
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150 beg = buf.find_first_not_of (", \t", end);
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151
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152 if (beg == std::string::npos || (buf[beg] == '\r' &&
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153 beg == buf.length () - 1))
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154 {
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155 // We had a line with trailing spaces and
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156 // ending with a CRLF, so this should look like EOL,
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157 // not a new colum.
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158 break;
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159 }
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160 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
161 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
162 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
163 }
4634
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jwe
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diff changeset
164
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
165 if (tmp_nc > 0)
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parents: 10160
diff changeset
166 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
167 if (nc == 0)
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parents: 10160
diff changeset
168 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
169 nc = tmp_nc;
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parents: 10160
diff changeset
170 nr++;
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
171 }
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
172 else if (nc == tmp_nc)
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
173 nr++;
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
174 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
175 error ("load: %s: inconsistent number of columns near line %d",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
176 filename.c_str (), file_line_number);
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
177 }
4634
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178 }
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diff changeset
179
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parents:
diff changeset
180 if (nr == 0 || nc == 0)
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
181 error ("load: file `%s' seems to be empty!", filename.c_str ());
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
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182
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
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diff changeset
183 is.clear ();
4643
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diff changeset
184 is.seekg (pos);
4634
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185 }
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186
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
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187 // Extract a matrix from a file of numbers only.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
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188 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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189 // Comments are not allowed. The file should only have numeric values.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
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190 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
191 // Reads the file twice. Once to find the number of rows and columns,
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
192 // and once to extract the matrix.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
193 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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194 // FILENAME is used for error messages.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
195 //
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
196 // This format provides no way to tag the data as global.
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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197
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
198 std::string
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
199 read_mat_ascii_data (std::istream& is, const std::string& filename,
10315
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parents: 10160
diff changeset
200 octave_value& tc)
4634
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jwe
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201 {
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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diff changeset
202 std::string retval;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
203
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
204 std::string varname;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
205
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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diff changeset
206 size_t pos = filename.rfind ('/');
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
207
8021
85184151822e fix typo in NPOS change
John W. Eaton <jwe@octave.org>
parents: 8019
diff changeset
208 if (pos != std::string::npos)
4634
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diff changeset
209 varname = filename.substr (pos+1);
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
210 else
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
211 varname = filename;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
212
4867
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diff changeset
213 pos = varname.rfind ('.');
4634
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diff changeset
214
8021
85184151822e fix typo in NPOS change
John W. Eaton <jwe@octave.org>
parents: 8019
diff changeset
215 if (pos != std::string::npos)
4634
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diff changeset
216 varname = varname.substr (0, pos);
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jwe
parents:
diff changeset
217
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
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diff changeset
218 size_t len = varname.length ();
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
219 for (size_t i = 0; i < len; i++)
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
220 {
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
221 char c = varname[i];
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
222 if (! (isalnum (c) || c == '_'))
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diff changeset
223 varname[i] = '_';
4634
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diff changeset
224 }
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
225
4867
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parents: 4726
diff changeset
226 if (is_keyword (varname) || ! isalpha (varname[0]))
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
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diff changeset
227 varname.insert (0, "X");
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
228
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
229 if (valid_identifier (varname))
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
230 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
parents: 4867
diff changeset
231 octave_idx_type nr = 0;
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
jwe
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diff changeset
232 octave_idx_type nc = 0;
4634
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diff changeset
233
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
234 int total_count = 0;
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
235
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
236 get_lines_and_columns (is, filename, nr, nc);
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
237
10142
829e69ec3110 make OCTAVE_QUIT a function
Jaroslav Hajek <highegg@gmail.com>
parents: 9469
diff changeset
238 octave_quit ();
4634
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diff changeset
239
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
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diff changeset
240 if (! error_state && nr > 0 && nc > 0)
10315
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diff changeset
241 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
242 Matrix tmp (nr, nc);
4634
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diff changeset
243
10315
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diff changeset
244 if (nr < 1 || nc < 1)
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
245 is.clear (std::ios::badbit);
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
246 else
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
247 {
57a59eae83cc untabify src C++ source files
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diff changeset
248 double d;
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
249 for (octave_idx_type i = 0; i < nr; i++)
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parents: 10160
diff changeset
250 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
251 std::string buf = get_mat_data_input_line (is);
4634
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diff changeset
252
10315
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diff changeset
253 std::istringstream tmp_stream (buf);
4634
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jwe
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diff changeset
254
10315
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diff changeset
255 for (octave_idx_type j = 0; j < nc; j++)
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
256 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
257 octave_quit ();
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
258
10315
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diff changeset
259 d = octave_read_value<double> (tmp_stream);
4634
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diff changeset
260
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
261 if (tmp_stream || tmp_stream.eof ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
262 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
263 tmp.elem (i, j) = d;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
264 total_count++;
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
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parents:
diff changeset
265
10315
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parents: 10160
diff changeset
266 // Skip whitespace and commas.
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
267 char c;
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
268 while (1)
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
269 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
270 tmp_stream >> c;
4634
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jwe
parents:
diff changeset
271
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
272 if (! tmp_stream)
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
273 break;
4634
79fe96966ca0 [project @ 2003-11-19 21:22:39 by jwe]
jwe
parents:
diff changeset
274
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
275 if (! (c == ' ' || c == '\t' || c == ','))
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
276 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
277 tmp_stream.putback (c);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
278 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
279 }
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
280 }
4634
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parents:
diff changeset
281
10315
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parents: 10160
diff changeset
282 if (tmp_stream.eof ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
283 break;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
284 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
285 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
286 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
287 error ("load: failed to read matrix from file `%s'",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
288 filename.c_str ());
4634
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parents:
diff changeset
289
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
290 return retval;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
291 }
4634
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jwe
parents:
diff changeset
292
10315
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parents: 10160
diff changeset
293 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
294 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
295 }
4634
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jwe
parents:
diff changeset
296
10315
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parents: 10160
diff changeset
297 if (is || is.eof ())
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
298 {
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
299 // FIXME -- not sure this is best, but it works.
4634
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jwe
parents:
diff changeset
300
10315
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parents: 10160
diff changeset
301 if (is.eof ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
302 is.clear ();
4634
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jwe
parents:
diff changeset
303
10315
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parents: 10160
diff changeset
304 octave_idx_type expected = nr * nc;
4634
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jwe
parents:
diff changeset
305
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
306 if (expected == total_count)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
307 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
308 tc = tmp;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
309 retval = varname;
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
310 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
311 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
312 error ("load: expected %d elements, found %d",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
313 expected, total_count);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
314 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
315 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
316 error ("load: failed to read matrix from file `%s'",
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
317 filename.c_str ());
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
318 }
4634
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jwe
parents:
diff changeset
319 else
10315
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John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
320 error ("load: unable to extract matrix size from file `%s'",
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parents: 10160
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321 filename.c_str ());
4634
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322 }
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323 else
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324 error ("load: unable to convert filename `%s' to valid identifier",
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325 filename.c_str ());
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326
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327 return retval;
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328 }
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329
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330 bool
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diff changeset
331 save_mat_ascii_data (std::ostream& os, const octave_value& val,
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diff changeset
332 int precision, bool tabs)
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333 {
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334 bool success = true;
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335
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336 if (val.is_complex_type ())
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337 warning ("save: omitting imaginary part for ASCII file");
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338
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339 Matrix m = val.matrix_value (true);
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340
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diff changeset
341 if (error_state)
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342 {
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343 success = false;
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344
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345 error_state = 0;
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346 }
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347 else
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348 {
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349 long old_precision = os.precision ();
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350
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351 os.precision (precision);
5938
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352
5951
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diff changeset
353 std::ios::fmtflags oflags
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354 = os.flags (static_cast<std::ios::fmtflags> (std::ios::scientific));
5951
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diff changeset
355
8425
2e777f5135a3 support -tabs option for save -ascii
Jaroslav Hajek <highegg@gmail.com>
parents: 8021
diff changeset
356 if (tabs)
2e777f5135a3 support -tabs option for save -ascii
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diff changeset
357 {
2e777f5135a3 support -tabs option for save -ascii
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parents: 8021
diff changeset
358 for (octave_idx_type i = 0; i < m.rows (); i++)
2e777f5135a3 support -tabs option for save -ascii
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parents: 8021
diff changeset
359 {
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parents: 8021
diff changeset
360 for (octave_idx_type j = 0; j < m.cols (); j++)
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parents: 8021
diff changeset
361 {
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parents: 8021
diff changeset
362 // Omit leading tabs.
2e777f5135a3 support -tabs option for save -ascii
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363 if (j != 0) os << '\t';
2e777f5135a3 support -tabs option for save -ascii
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parents: 8021
diff changeset
364 octave_write_double (os, m (i, j));
2e777f5135a3 support -tabs option for save -ascii
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parents: 8021
diff changeset
365 }
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parents: 8021
diff changeset
366 os << "\n";
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parents: 8021
diff changeset
367 }
2e777f5135a3 support -tabs option for save -ascii
Jaroslav Hajek <highegg@gmail.com>
parents: 8021
diff changeset
368 }
2e777f5135a3 support -tabs option for save -ascii
Jaroslav Hajek <highegg@gmail.com>
parents: 8021
diff changeset
369 else
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parents: 8021
diff changeset
370 os << m;
5951
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diff changeset
371
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
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diff changeset
372 os.flags (oflags);
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parents: 5938
diff changeset
373
b2167e370f82 [project @ 2006-08-22 05:13:42 by jwe]
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parents: 5938
diff changeset
374 os.precision (old_precision);
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parents: 5938
diff changeset
375 }
5938
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diff changeset
376
5a3a716c257d [project @ 2006-08-18 06:06:53 by jwe]
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diff changeset
377 return (os && success);
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diff changeset
378 }