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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 <iostream> |
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28 #include <sstream> |
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29 |
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30 #include "lo-utils.h" |
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31 |
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4513
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32 #include "Cell.h" |
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33 #include "defun.h" |
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34 #include "error.h" |
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4994
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35 #include "ov.h" |
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36 #include "ov-list.h" |
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37 #include "unwind-prot.h" |
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38 |
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39 #include "byte-swap.h" |
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40 #include "ls-oct-ascii.h" |
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41 #include "ls-oct-binary.h" |
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42 #include "ls-hdf5.h" |
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43 #include "ls-utils.h" |
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44 |
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3219
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45 DEFINE_OCTAVE_ALLOCATOR (octave_list); |
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46 |
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47 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_list, "list", "list"); |
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48 |
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49 octave_list::octave_list (const Cell& c) |
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50 : octave_base_value (), data () |
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51 { |
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52 octave_idx_type n = c.length (); |
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53 |
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54 data.resize (dim_vector (1, n)); |
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55 |
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56 for (octave_idx_type i = 0; i < n; i++) |
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57 data(i) = c(i); |
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4513
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58 } |
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59 |
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60 octave_value_list |
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61 octave_list::subsref (const std::string& type, |
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62 const std::list<octave_value_list>& idx, int nargout) |
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63 { |
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64 octave_value_list retval; |
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65 |
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66 switch (type[0]) |
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67 { |
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68 case '(': |
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69 { |
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70 octave_value_list tmp_idx = idx.front (); |
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71 |
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72 if (tmp_idx.length () == 1) |
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73 { |
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74 idx_vector i = tmp_idx (0).index_vector (); |
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75 |
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76 Cell tmp = data.index (i); |
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77 |
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78 retval(0) = octave_value (new octave_list (tmp)); |
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79 } |
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80 else |
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81 error ("only one index allowed for lists"); |
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82 } |
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83 break; |
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84 |
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85 case '{': |
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86 { |
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87 octave_value_list tmp_idx = idx.front (); |
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88 |
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89 if (tmp_idx.length () == 1) |
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90 { |
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91 idx_vector i = tmp_idx (0).index_vector (); |
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92 |
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93 Cell tmp = data.index (i); |
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94 |
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95 if (tmp.length () == 1) |
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96 retval(0) = tmp(0); |
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97 else |
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98 retval(0) = octave_value (tmp, true); |
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99 } |
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100 else |
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101 error ("only one index allowed for lists"); |
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102 } |
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103 break; |
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104 |
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105 case '.': |
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106 { |
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107 std::string nm = type_name (); |
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108 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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109 } |
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110 break; |
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111 |
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112 default: |
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113 panic_impossible (); |
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114 } |
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115 |
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116 // FIXME -- perhaps there should be an |
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117 // octave_value_list::next_subsref member function? See also |
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118 // octave_user_function::subsref. |
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119 |
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120 if (idx.size () > 1) |
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121 retval = retval(0).next_subsref (nargout, type, idx); |
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122 |
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123 return retval; |
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124 } |
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125 |
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126 octave_value |
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127 octave_list::do_index_op (const octave_value_list& idx, bool resize_ok) |
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128 { |
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129 octave_value retval; |
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130 |
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131 if (idx.length () == 1) |
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132 { |
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133 idx_vector iidx = idx (0).index_vector (); |
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134 |
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135 Cell tcell = data.index (iidx, resize_ok); |
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136 |
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137 octave_value_list result; |
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138 |
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139 octave_idx_type n = tcell.numel (); |
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140 |
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141 result.resize (n); |
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142 |
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143 for (octave_idx_type i = 0; i < n; i++) |
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144 result(i) = tcell(i); |
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145 |
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146 retval = result; |
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147 } |
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148 else |
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149 error ("only one index allowed for lists"); |
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150 |
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151 return retval; |
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152 } |
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153 |
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154 octave_value |
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155 octave_list::subsasgn (const std::string& type, |
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156 const std::list<octave_value_list>& idx, |
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157 const octave_value& rhs) |
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158 { |
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159 octave_value retval; |
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160 |
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161 octave_idx_type n = type.length (); |
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162 |
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163 octave_value t_rhs = rhs; |
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164 |
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165 if (n > 1) |
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166 { |
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167 switch (type[0]) |
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168 { |
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169 case '(': |
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170 { |
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171 octave_value tmp = do_index_op (idx.front (), true); |
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172 |
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173 if (! tmp.is_defined ()) |
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174 tmp = octave_value::empty_conv (type.substr (1), rhs); |
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175 |
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176 if (! error_state) |
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177 { |
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178 std::list<octave_value_list> next_idx (idx); |
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179 |
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180 next_idx.erase (next_idx.begin ()); |
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181 |
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182 t_rhs = tmp.subsasgn (type.substr (1), next_idx, rhs); |
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183 } |
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184 } |
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185 break; |
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186 |
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187 case '{': |
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188 case '.': |
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189 { |
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190 std::string nm = type_name (); |
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191 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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192 } |
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193 break; |
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194 |
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195 default: |
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196 panic_impossible (); |
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197 } |
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198 } |
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199 |
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3940
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200 if (! error_state) |
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201 { |
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202 switch (type[0]) |
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203 { |
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204 case '(': |
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205 { |
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206 octave_value_list i = idx.front (); |
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207 |
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208 octave_idx_type len = i.length (); |
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209 |
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210 for (octave_idx_type k = 0; k < len; k++) |
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211 data.set_index (i(k).index_vector ()); |
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212 |
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213 ::assign (data, Cell (t_rhs), Cell::resize_fill_value ()); |
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214 |
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215 count++; |
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216 retval = octave_value (this); |
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217 } |
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218 break; |
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219 |
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220 case '{': |
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221 case '.': |
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222 { |
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223 std::string nm = type_name (); |
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224 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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225 } |
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226 break; |
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227 |
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228 default: |
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229 panic_impossible (); |
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230 } |
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231 } |
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232 |
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233 return retval; |
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234 } |
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235 |
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236 void |
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237 octave_list::assign (const octave_value_list& idx, const octave_value& rhs) |
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238 { |
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239 if (idx.length () == 1) |
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240 { |
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3202
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241 int i = idx(0).int_value (true); |
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242 |
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243 if (! error_state) |
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244 { |
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245 octave_idx_type n = data.length (); |
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246 |
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247 if (i > 0) |
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248 { |
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249 if (i > n) |
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250 warning_with_id ("Octave:resize-on-range-error", |
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251 "list index = %d out of range", i); |
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252 |
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253 data(i-1) = rhs; |
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254 } |
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255 else |
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3202
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256 error ("list index = %d out of range", i); |
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257 } |
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3202
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258 else |
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259 error ("list index must be an integer"); |
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260 } |
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261 else |
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262 error ("lists may only be indexed by a single scalar"); |
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263 } |
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264 |
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265 size_t |
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266 octave_list::byte_size (void) const |
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267 { |
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268 size_t retval = 0; |
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269 |
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5275
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270 for (octave_idx_type i = 0; i < numel (); i++) |
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271 retval += data(i).byte_size (); |
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272 |
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273 return retval; |
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274 } |
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275 |
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276 octave_value_list |
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277 octave_list::list_value (void) const |
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278 { |
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279 octave_value_list retval; |
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280 |
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281 octave_idx_type n = data.length (); |
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282 |
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283 retval.resize (n); |
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284 |
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285 for (octave_idx_type i = 0; i < n; i++) |
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286 retval(i) = data(i); |
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287 |
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288 return retval; |
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289 } |
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290 |
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3196
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291 void |
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3523
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292 octave_list::print (std::ostream& os, bool) const |
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2901
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293 { |
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294 print_raw (os); |
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295 } |
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296 |
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297 void |
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298 octave_list::print_raw (std::ostream& os, bool) const |
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299 { |
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2985
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300 unwind_protect::begin_frame ("octave_list_print"); |
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301 |
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302 octave_idx_type n = data.length (); |
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303 |
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3196
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304 if (n > 0) |
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305 { |
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3196
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306 indent (os); |
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307 os << "("; |
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308 newline (os); |
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309 |
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310 increment_indent_level (); |
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2916
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311 |
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5275
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312 for (octave_idx_type i = 0; i < n; i++) |
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313 { |
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314 std::ostringstream buf; |
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4051
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315 |
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5765
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316 buf << "[" << i+1 << "]"; |
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317 |
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318 octave_value val = data(i); |
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2916
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319 |
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320 val.print_with_name (os, buf.str ()); |
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3196
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321 } |
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322 |
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3196
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323 decrement_indent_level (); |
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324 |
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3196
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325 indent (os); |
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326 os << ")"; |
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327 } |
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328 else |
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329 os << "()"; |
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330 |
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2901
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331 newline (os); |
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332 |
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2985
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333 unwind_protect::run_frame ("octave_list_print"); |
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334 } |
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335 |
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2901
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336 bool |
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3523
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337 octave_list::print_name_tag (std::ostream& os, const std::string& name) const |
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338 { |
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339 indent (os); |
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340 if (data.length () == 0) |
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341 os << name << " = "; |
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342 else |
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343 { |
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344 os << name << " ="; |
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345 newline (os); |
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346 } |
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2901
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347 return false; |
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348 } |
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349 |
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2993
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350 DEFUN (list, args, , |
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3447
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351 "-*- texinfo -*-\n\ |
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352 @deftypefn {Built-in Function} {} list (@var{a1}, @var{a2}, @dots{})\n\ |
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353 Create a new list with elements given by the arguments @var{a1},\n\ |
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354 @var{a2}, @dots{}.\n\ |
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355 @end deftypefn") |
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356 { |
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4591
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357 static bool warned = false; |
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358 |
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359 if (! warned) |
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360 { |
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361 warning ("list objects are deprecated; use cell arrays instead"); |
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362 warned = true; |
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363 } |
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364 |
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2882
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365 return octave_value (args); |
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366 } |
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367 |
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3219
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368 DEFUN (nth, args, , |
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3447
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369 "-*- texinfo -*-\n\ |
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370 @deftypefn {Built-in Function} {} nth (@var{list}, @var{n})\n\ |
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371 Return the @var{n}-th element of @var{list}.\n\ |
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372 @end deftypefn") |
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3219
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373 { |
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374 octave_value retval; |
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375 |
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376 if (args.length () == 2) |
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377 { |
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378 octave_value_list lst = args(0).list_value (); |
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379 |
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380 if (! error_state) |
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381 { |
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382 int n = args(1).int_value (true); |
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383 |
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384 if (! error_state) |
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385 { |
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386 if (n > 0 && n <= lst.length ()) |
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387 retval = lst(n-1); |
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388 else |
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389 error ("nth: index = %d out of range", n); |
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390 } |
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391 else |
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392 error ("nth: second argument must be an integer"); |
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393 } |
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394 else |
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395 error ("nth: first argument must be a list"); |
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396 } |
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397 else |
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5823
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398 print_usage (); |
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3219
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399 |
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400 return retval; |
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401 } |
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402 |
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2882
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403 DEFUN (append, args, , |
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3447
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404 "-*- texinfo -*-\n\ |
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405 @deftypefn {Built-in Function} {} append (@var{list}, @var{a1}, @var{a2}, @dots{})\n\ |
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6666
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406 Return a new list created by appending @var{a1}, @var{a2}, @dots{}, to\n\ |
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3447
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407 @var{list}. If any of the arguments to be appended is a list, its\n\ |
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408 elements are appended individually. For example,\n\ |
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409 \n\ |
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3447
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410 @example\n\ |
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411 x = list (1, 2);\n\ |
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412 y = list (3, 4);\n\ |
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413 append (x, y);\n\ |
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414 @end example\n\ |
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3219
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415 \n\ |
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3447
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416 @noindent\n\ |
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417 results in the list containing the four elements @samp{(1 2 3 4)}, not\n\ |
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418 a list containing the three elements @samp{(1 2 (3 4))}.\n\ |
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419 @end deftypefn") |
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420 { |
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421 octave_value retval; |
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422 |
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423 int nargin = args.length (); |
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424 |
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425 if (nargin > 1) |
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426 { |
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427 octave_value_list tmp = args(0).list_value (); |
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428 |
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429 if (! error_state) |
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430 { |
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431 for (int i = 1; i < nargin; i++) |
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3219
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432 { |
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433 octave_value ov = args(i); |
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434 |
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435 if (ov.is_list ()) |
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436 tmp.append (ov.list_value ()); |
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437 else |
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438 tmp.append (ov); |
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439 } |
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440 |
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4233
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441 retval = octave_value (tmp); |
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2882
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442 } |
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443 } |
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444 else |
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5823
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445 print_usage (); |
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2882
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446 |
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447 return retval; |
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448 } |
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449 |
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450 DEFUN (reverse, args, , |
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3447
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451 "-*- texinfo -*-\n\ |
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452 @deftypefn {Built-in Function} {} reverse (@var{list})\n\ |
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453 Return a new list created by reversing the elements of @var{list}.\n\ |
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454 @end deftypefn") |
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2882
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455 { |
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456 octave_value retval; |
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457 |
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458 int nargin = args.length (); |
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459 |
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460 if (nargin == 1) |
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461 { |
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462 octave_value_list tmp = args(0).list_value (); |
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463 |
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464 if (! error_state) |
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4233
|
465 retval = octave_value (tmp.reverse ()); |
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2882
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466 } |
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467 else |
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5823
|
468 print_usage (); |
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2882
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469 |
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470 return retval; |
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471 } |
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472 |
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3196
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473 DEFUN (splice, args, , |
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3447
|
474 "-*- texinfo -*-\n\ |
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475 @deftypefn {Built-in Function} {} splice (@var{list_1}, @var{offset}, @var{length}, @var{list_2})\n\ |
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476 Replace @var{length} elements of @var{list_1} beginning at\n\ |
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477 @var{offset} with the contents of @var{list_2} (if any). If\n\ |
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478 @var{length} is omitted, all elements from @var{offset} to the end of\n\ |
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479 @var{list_1} are replaced. As a special case, if @var{offset} is one\n\ |
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480 greater than the length of @var{list_1} and @var{length} is 0, splice\n\ |
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3448
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481 is equivalent to @code{append (@var{list_1}, @var{list_2})}.\n\ |
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3447
|
482 @end deftypefn") |
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3196
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483 { |
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484 octave_value retval; |
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485 |
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486 int nargin = args.length (); |
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487 |
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488 if (nargin > 1 && nargin < 5) |
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489 { |
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490 octave_value_list list_1 = args(0).list_value (); |
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491 |
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492 if (! error_state) |
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|
493 { |
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3202
|
494 int offset = args(1).int_value (true); |
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3196
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495 |
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|
496 if (! error_state) |
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497 { |
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3202
|
498 offset--; |
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499 |
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500 int length = 0; |
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501 |
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502 octave_value_list list_2; |
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3196
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503 |
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3202
|
504 if (nargin < 3) |
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505 length = list_1.length () - offset; |
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506 else |
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507 { |
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|
508 length = args(2).int_value (true); |
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3196
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509 |
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3202
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510 if (! error_state) |
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3196
|
511 { |
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3202
|
512 if (nargin == 4) |
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513 { |
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514 list_2 = args(3).list_value (); |
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3196
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515 |
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3202
|
516 if (error_state) |
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517 error ("splice: fourth argument must be a list"); |
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3196
|
518 } |
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|
519 } |
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3202
|
520 else |
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521 error ("splice: LENGTH must be an integer"); |
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|
522 } |
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3196
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523 |
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3202
|
524 if (! error_state) |
|
4233
|
525 retval = octave_value (list_1.splice (offset, length, list_2)); |
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3196
|
526 } |
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527 else |
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|
528 error ("splice: OFFSET must be an integer"); |
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529 } |
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530 else |
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531 error ("splice: first argument must be a list"); |
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532 } |
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533 else |
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5823
|
534 print_usage (); |
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3196
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535 |
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536 return retval; |
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537 } |
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538 |
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4687
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539 bool |
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6974
|
540 octave_list::save_ascii (std::ostream& os) |
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4687
|
541 { |
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542 octave_value_list lst = list_value (); |
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|
543 os << "# length: " << lst.length () << "\n"; |
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544 |
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545 for (int i = 0; i < lst.length (); ++i) |
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546 { |
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547 // should we use lst.name_tags () to label the elements? |
|
5717
|
548 |
|
5765
|
549 std::ostringstream buf; |
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|
550 buf << "_" << i; |
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551 std::string s = buf.str (); |
|
5717
|
552 |
|
6974
|
553 bool b = save_ascii_data (os, lst (i), s.c_str (), false, 0); |
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4687
|
554 |
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|
555 if (! b) |
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556 return false; |
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557 } |
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558 |
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|
559 return true; |
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|
560 } |
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|
561 |
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|
562 bool |
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563 octave_list::load_ascii (std::istream& is) |
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|
564 { |
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|
565 int len = 0; |
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566 bool success = true; |
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567 |
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568 if (extract_keyword (is, "length", len) && len >= 0) |
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569 { |
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570 if (len > 0) |
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|
571 { |
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|
572 octave_value_list lst; |
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573 |
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574 for (int j = 0; j < len; j++) |
|
|
575 { |
|
|
576 octave_value t2; |
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|
577 bool dummy; |
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|
578 |
|
|
579 // recurse to read list elements |
|
|
580 std::string nm |
|
5757
|
581 = read_ascii_data (is, std::string (), dummy, t2, j); |
|
4687
|
582 |
|
|
583 if (!is) |
|
|
584 break; |
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|
585 |
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586 lst.append (t2); |
|
|
587 } |
|
|
588 |
|
|
589 if (is) |
|
|
590 data = lst; |
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|
591 else |
|
|
592 { |
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|
593 error ("load: failed to load list"); |
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|
594 success = false; |
|
|
595 } |
|
|
596 } |
|
|
597 else if (len == 0 ) |
|
|
598 data = Cell (0, 0); |
|
|
599 else |
|
|
600 panic_impossible (); |
|
|
601 } |
|
|
602 else { |
|
|
603 error ("load: failed to extract number of elements in list"); |
|
|
604 success = false; |
|
|
605 } |
|
|
606 |
|
|
607 return success; |
|
|
608 } |
|
|
609 |
|
|
610 bool |
|
|
611 octave_list::save_binary (std::ostream& os, bool& save_as_floats) |
|
|
612 { |
|
|
613 octave_value_list lst = list_value (); |
|
|
614 |
|
5828
|
615 int32_t len = lst.length(); |
|
5760
|
616 os.write (reinterpret_cast<char *> (&len), 4); |
|
4687
|
617 |
|
|
618 for (int i = 0; i < lst.length (); i++) |
|
|
619 { |
|
|
620 // should we use lst.name_tags () to label the elements? |
|
5717
|
621 |
|
5765
|
622 std::ostringstream buf; |
|
|
623 buf << "_" << i; |
|
|
624 std::string s = buf.str (); |
|
4687
|
625 |
|
|
626 // Recurse to print sub-value. |
|
5717
|
627 bool b = save_binary_data (os, lst(i), s.c_str (), "", 0, |
|
|
628 save_as_floats); |
|
4687
|
629 |
|
|
630 if (! b) |
|
|
631 return false; |
|
|
632 } |
|
|
633 |
|
|
634 return true; |
|
|
635 } |
|
|
636 |
|
|
637 bool |
|
|
638 octave_list::load_binary (std::istream& is, bool swap, |
|
5760
|
639 oct_mach_info::float_format fmt) |
|
4687
|
640 { |
|
5828
|
641 int32_t len; |
|
5760
|
642 if (! is.read (reinterpret_cast<char *> (&len), 4)) |
|
4687
|
643 return false; |
|
|
644 if (swap) |
|
4944
|
645 swap_bytes<4> (&len); |
|
4687
|
646 |
|
|
647 if (len > 0) |
|
|
648 { |
|
|
649 octave_value_list lst; |
|
|
650 |
|
5275
|
651 for (octave_idx_type i = 0; i < len; i++) |
|
4687
|
652 { |
|
|
653 octave_value t2; |
|
|
654 bool dummy; |
|
|
655 std::string doc; |
|
|
656 |
|
|
657 // recurse to read list elements |
|
|
658 std::string nm = read_binary_data (is, swap, fmt, std::string (), |
|
|
659 dummy, t2, doc); |
|
|
660 |
|
|
661 if (!is) |
|
|
662 return false; |
|
|
663 |
|
|
664 lst.append(t2); |
|
|
665 } |
|
|
666 |
|
|
667 if (is) |
|
|
668 data = lst; |
|
|
669 else |
|
|
670 { |
|
|
671 error ("load: failed to load list"); |
|
|
672 return false; |
|
|
673 } |
|
|
674 |
|
|
675 } |
|
|
676 else if (len == 0 ) |
|
|
677 data = Cell (0, 0); |
|
|
678 else |
|
|
679 return false; |
|
|
680 |
|
|
681 return true; |
|
|
682 } |
|
|
683 |
|
|
684 #if defined (HAVE_HDF5) |
|
4944
|
685 |
|
4687
|
686 bool |
|
|
687 octave_list::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
|
|
688 { |
|
|
689 hid_t data_hid = -1; |
|
|
690 |
|
|
691 data_hid = H5Gcreate (loc_id, name, 0); |
|
|
692 if (data_hid < 0) return false; |
|
|
693 |
|
|
694 // recursively add each element of the list to this group |
|
|
695 octave_value_list lst = list_value (); |
|
|
696 |
|
5275
|
697 for (octave_idx_type i = 0; i < lst.length (); ++i) |
|
4687
|
698 { |
|
|
699 // should we use lst.name_tags () to label the elements? |
|
5717
|
700 |
|
5765
|
701 std::ostringstream buf; |
|
|
702 buf << "_" << i; |
|
|
703 std::string s = buf.str (); |
|
5717
|
704 |
|
|
705 bool retval2 = add_hdf5_data (data_hid, lst (i), s.c_str (), "", |
|
4687
|
706 false, save_as_floats); |
|
|
707 if (! retval2) |
|
|
708 break; |
|
|
709 } |
|
|
710 |
|
|
711 H5Gclose (data_hid); |
|
4837
|
712 |
|
4687
|
713 return true; |
|
|
714 } |
|
|
715 |
|
|
716 bool |
|
|
717 octave_list::load_hdf5 (hid_t loc_id, const char *name, |
|
|
718 bool have_h5giterate_bug) |
|
|
719 { |
|
|
720 bool retval = false; |
|
|
721 |
|
|
722 hdf5_callback_data dsub; |
|
|
723 |
|
4696
|
724 herr_t retval2 = -1; |
|
4687
|
725 octave_value_list lst; |
|
|
726 int current_item = 0; |
|
4696
|
727 #ifdef HAVE_H5GGET_NUM_OBJS |
|
|
728 hsize_t num_obj = 0; |
|
5060
|
729 hid_t group_id = H5Gopen (loc_id, name); |
|
|
730 H5Gget_num_objs (group_id, &num_obj); |
|
|
731 H5Gclose (group_id); |
|
4696
|
732 |
|
|
733 while (current_item < static_cast<int> (num_obj) |
|
|
734 && (retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
735 hdf5_read_next_data, &dsub)) > 0) |
|
|
736 #else |
|
4687
|
737 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
738 hdf5_read_next_data, &dsub)) > 0) |
|
4696
|
739 #endif |
|
4687
|
740 { |
|
|
741 lst.append (dsub.tc); |
|
|
742 |
|
|
743 if (have_h5giterate_bug) |
|
|
744 current_item++; // H5Giterate returned the last index processed |
|
|
745 } |
|
|
746 |
|
|
747 if (retval2 >= 0) |
|
|
748 { |
|
|
749 data = lst; |
|
|
750 retval = true; |
|
|
751 } |
|
|
752 |
|
|
753 return retval; |
|
|
754 } |
|
4944
|
755 |
|
4687
|
756 #endif |
|
|
757 |
|
2882
|
758 /* |
|
|
759 ;;; Local Variables: *** |
|
|
760 ;;; mode: C++ *** |
|
|
761 ;;; End: *** |
|
|
762 */ |
