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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, |
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4 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 #include <sstream> |
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30 |
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31 #include "lo-utils.h" |
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32 |
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4513
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33 #include "Cell.h" |
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34 #include "defun.h" |
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35 #include "error.h" |
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36 #include "ov.h" |
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37 #include "ov-list.h" |
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38 #include "unwind-prot.h" |
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39 |
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40 #include "byte-swap.h" |
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41 #include "ls-oct-ascii.h" |
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42 #include "ls-oct-binary.h" |
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43 #include "ls-hdf5.h" |
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44 #include "ls-utils.h" |
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45 |
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46 DEFINE_OCTAVE_ALLOCATOR (octave_list); |
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47 |
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48 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_list, "list", "list"); |
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49 |
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50 octave_list::octave_list (const Cell& c) |
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51 : octave_base_value (), data () |
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52 { |
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53 octave_idx_type n = c.length (); |
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54 |
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55 data.resize (dim_vector (1, n)); |
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56 |
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57 for (octave_idx_type i = 0; i < n; i++) |
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58 data(i) = c(i); |
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59 } |
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60 |
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61 octave_value_list |
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62 octave_list::subsref (const std::string& type, |
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63 const std::list<octave_value_list>& idx, int nargout) |
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64 { |
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65 octave_value_list retval; |
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66 |
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67 switch (type[0]) |
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68 { |
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69 case '(': |
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70 { |
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71 octave_value_list tmp_idx = idx.front (); |
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72 |
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73 if (tmp_idx.length () == 1) |
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74 { |
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75 idx_vector i = tmp_idx (0).index_vector (); |
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76 |
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77 Cell tmp = data.index (i); |
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78 |
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79 retval(0) = octave_value (new octave_list (tmp)); |
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80 } |
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81 else |
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82 error ("only one index allowed for lists"); |
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83 } |
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84 break; |
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85 |
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86 case '{': |
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87 { |
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88 octave_value_list tmp_idx = idx.front (); |
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89 |
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90 if (tmp_idx.length () == 1) |
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91 { |
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92 idx_vector i = tmp_idx (0).index_vector (); |
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93 |
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94 Cell tmp = data.index (i); |
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95 |
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96 if (tmp.length () == 1) |
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97 retval(0) = tmp(0); |
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98 else |
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99 retval(0) = octave_value (tmp, true); |
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100 } |
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101 else |
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102 error ("only one index allowed for lists"); |
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103 } |
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104 break; |
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105 |
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106 case '.': |
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107 { |
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108 std::string nm = type_name (); |
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109 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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110 } |
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111 break; |
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112 |
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113 default: |
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114 panic_impossible (); |
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115 } |
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116 |
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117 // FIXME -- perhaps there should be an |
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118 // octave_value_list::next_subsref member function? See also |
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119 // octave_user_function::subsref. |
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120 |
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121 if (idx.size () > 1) |
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122 retval = retval(0).next_subsref (nargout, type, idx); |
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123 |
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124 return retval; |
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125 } |
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126 |
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127 octave_value |
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128 octave_list::do_index_op (const octave_value_list& idx, bool resize_ok) |
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129 { |
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130 octave_value retval; |
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131 |
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132 if (idx.length () == 1) |
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133 { |
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134 idx_vector iidx = idx (0).index_vector (); |
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135 |
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136 Cell tcell = data.index (iidx, resize_ok); |
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137 |
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138 octave_value_list result; |
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139 |
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140 octave_idx_type n = tcell.numel (); |
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141 |
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142 result.resize (n); |
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143 |
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144 for (octave_idx_type i = 0; i < n; i++) |
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145 result(i) = tcell(i); |
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146 |
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147 retval = result; |
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148 } |
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149 else |
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150 error ("only one index allowed for lists"); |
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151 |
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152 return retval; |
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153 } |
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154 |
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155 octave_value |
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156 octave_list::subsasgn (const std::string& type, |
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157 const std::list<octave_value_list>& idx, |
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158 const octave_value& rhs) |
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159 { |
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160 octave_value retval; |
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161 |
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162 octave_idx_type n = type.length (); |
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163 |
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164 octave_value t_rhs = rhs; |
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165 |
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166 if (n > 1) |
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167 { |
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168 switch (type[0]) |
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169 { |
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170 case '(': |
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171 { |
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172 octave_value tmp = do_index_op (idx.front (), true); |
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173 |
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174 if (! tmp.is_defined ()) |
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175 tmp = octave_value::empty_conv (type.substr (1), rhs); |
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176 |
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177 if (! error_state) |
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178 { |
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179 std::list<octave_value_list> next_idx (idx); |
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180 |
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181 next_idx.erase (next_idx.begin ()); |
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182 |
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183 t_rhs = tmp.subsasgn (type.substr (1), next_idx, rhs); |
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184 } |
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185 } |
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186 break; |
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187 |
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188 case '{': |
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189 case '.': |
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190 { |
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191 std::string nm = type_name (); |
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192 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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193 } |
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194 break; |
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195 |
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196 default: |
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197 panic_impossible (); |
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198 } |
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199 } |
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200 |
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3940
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201 if (! error_state) |
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202 { |
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203 switch (type[0]) |
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204 { |
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205 case '(': |
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206 { |
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207 octave_value_list i = idx.front (); |
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208 |
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209 octave_idx_type len = i.length (); |
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210 |
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211 for (octave_idx_type k = 0; k < len; k++) |
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212 data.set_index (i(k).index_vector ()); |
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213 |
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214 ::assign (data, Cell (t_rhs), Cell::resize_fill_value ()); |
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215 |
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216 count++; |
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217 retval = octave_value (this); |
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218 } |
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219 break; |
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220 |
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221 case '{': |
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222 case '.': |
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223 { |
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224 std::string nm = type_name (); |
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225 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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226 } |
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227 break; |
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228 |
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229 default: |
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230 panic_impossible (); |
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231 } |
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232 } |
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233 |
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234 return retval; |
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235 } |
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236 |
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237 void |
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238 octave_list::assign (const octave_value_list& idx, const octave_value& rhs) |
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239 { |
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240 if (idx.length () == 1) |
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241 { |
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242 int i = idx(0).int_value (true); |
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243 |
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244 if (! error_state) |
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245 { |
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246 octave_idx_type n = data.length (); |
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247 |
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248 if (i > 0) |
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249 { |
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250 if (i > n) |
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251 warning_with_id ("Octave:resize-on-range-error", |
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252 "list index = %d out of range", i); |
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253 |
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254 data(i-1) = rhs; |
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255 } |
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256 else |
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257 error ("list index = %d out of range", i); |
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258 } |
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3202
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259 else |
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260 error ("list index must be an integer"); |
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261 } |
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262 else |
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263 error ("lists may only be indexed by a single scalar"); |
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264 } |
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265 |
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266 size_t |
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267 octave_list::byte_size (void) const |
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268 { |
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269 size_t retval = 0; |
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270 |
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271 for (octave_idx_type i = 0; i < numel (); i++) |
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272 retval += data(i).byte_size (); |
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273 |
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274 return retval; |
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275 } |
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276 |
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277 octave_value_list |
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278 octave_list::list_value (void) const |
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279 { |
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280 octave_value_list retval; |
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281 |
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282 octave_idx_type n = data.length (); |
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283 |
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284 retval.resize (n); |
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285 |
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286 for (octave_idx_type i = 0; i < n; i++) |
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287 retval(i) = data(i); |
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288 |
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289 return retval; |
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290 } |
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291 |
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292 void |
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293 octave_list::print (std::ostream& os, bool) const |
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294 { |
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295 print_raw (os); |
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296 } |
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297 |
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298 void |
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299 octave_list::print_raw (std::ostream& os, bool) const |
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300 { |
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2985
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301 unwind_protect::begin_frame ("octave_list_print"); |
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302 |
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303 octave_idx_type n = data.length (); |
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304 |
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305 if (n > 0) |
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306 { |
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307 indent (os); |
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308 os << "("; |
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309 newline (os); |
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310 |
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311 increment_indent_level (); |
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312 |
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313 for (octave_idx_type i = 0; i < n; i++) |
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314 { |
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315 std::ostringstream buf; |
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316 |
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317 buf << "[" << i+1 << "]"; |
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318 |
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319 octave_value val = data(i); |
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320 |
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321 val.print_with_name (os, buf.str ()); |
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322 } |
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323 |
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3196
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324 decrement_indent_level (); |
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325 |
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3196
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326 indent (os); |
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327 os << ")"; |
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328 } |
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329 else |
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330 os << "()"; |
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331 |
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2901
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332 newline (os); |
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333 |
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334 unwind_protect::run_frame ("octave_list_print"); |
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335 } |
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336 |
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337 bool |
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338 octave_list::print_name_tag (std::ostream& os, const std::string& name) const |
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339 { |
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340 indent (os); |
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341 if (data.length () == 0) |
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342 os << name << " = "; |
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343 else |
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344 { |
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345 os << name << " ="; |
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346 newline (os); |
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347 } |
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2901
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348 return false; |
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349 } |
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350 |
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2993
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351 DEFUN (list, args, , |
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352 "-*- texinfo -*-\n\ |
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353 @deftypefn {Built-in Function} {} list (@var{a1}, @var{a2}, @dots{})\n\ |
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354 Create a new list with elements given by the arguments @var{a1},\n\ |
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355 @var{a2}, @dots{}.\n\ |
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356 @end deftypefn") |
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357 { |
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358 static bool warned = false; |
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359 |
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360 if (! warned) |
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361 { |
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362 warning ("list objects are deprecated; use cell arrays instead"); |
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363 warned = true; |
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364 } |
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365 |
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366 return octave_value (args); |
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367 } |
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368 |
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3219
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369 DEFUN (nth, args, , |
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370 "-*- texinfo -*-\n\ |
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371 @deftypefn {Built-in Function} {} nth (@var{list}, @var{n})\n\ |
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372 Return the @var{n}-th element of @var{list}.\n\ |
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373 @end deftypefn") |
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374 { |
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375 octave_value retval; |
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376 |
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377 if (args.length () == 2) |
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378 { |
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379 octave_value_list lst = args(0).list_value (); |
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380 |
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381 if (! error_state) |
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382 { |
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383 int n = args(1).int_value (true); |
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384 |
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385 if (! error_state) |
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386 { |
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387 if (n > 0 && n <= lst.length ()) |
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388 retval = lst(n-1); |
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389 else |
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390 error ("nth: index = %d out of range", n); |
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391 } |
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392 else |
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393 error ("nth: second argument must be an integer"); |
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394 } |
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395 else |
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396 error ("nth: first argument must be a list"); |
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397 } |
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398 else |
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5823
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399 print_usage (); |
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400 |
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401 return retval; |
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402 } |
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403 |
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2882
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404 DEFUN (append, args, , |
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3447
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405 "-*- texinfo -*-\n\ |
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406 @deftypefn {Built-in Function} {} append (@var{list}, @var{a1}, @var{a2}, @dots{})\n\ |
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6666
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407 Return a new list created by appending @var{a1}, @var{a2}, @dots{}, to\n\ |
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3447
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408 @var{list}. If any of the arguments to be appended is a list, its\n\ |
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409 elements are appended individually. For example,\n\ |
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410 \n\ |
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3447
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411 @example\n\ |
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412 x = list (1, 2);\n\ |
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413 y = list (3, 4);\n\ |
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414 append (x, y);\n\ |
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415 @end example\n\ |
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3219
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416 \n\ |
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3447
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417 @noindent\n\ |
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418 results in the list containing the four elements @samp{(1 2 3 4)}, not\n\ |
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419 a list containing the three elements @samp{(1 2 (3 4))}.\n\ |
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420 @end deftypefn") |
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421 { |
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422 octave_value retval; |
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423 |
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424 int nargin = args.length (); |
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425 |
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426 if (nargin > 1) |
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427 { |
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428 octave_value_list tmp = args(0).list_value (); |
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429 |
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430 if (! error_state) |
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431 { |
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432 for (int i = 1; i < nargin; i++) |
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3219
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433 { |
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434 octave_value ov = args(i); |
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435 |
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436 if (ov.is_list ()) |
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437 tmp.append (ov.list_value ()); |
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438 else |
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439 tmp.append (ov); |
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440 } |
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441 |
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4233
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442 retval = octave_value (tmp); |
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2882
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443 } |
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444 } |
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445 else |
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5823
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446 print_usage (); |
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447 |
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448 return retval; |
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449 } |
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450 |
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451 DEFUN (reverse, args, , |
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3447
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452 "-*- texinfo -*-\n\ |
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453 @deftypefn {Built-in Function} {} reverse (@var{list})\n\ |
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454 Return a new list created by reversing the elements of @var{list}.\n\ |
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455 @end deftypefn") |
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2882
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456 { |
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457 octave_value retval; |
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458 |
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459 int nargin = args.length (); |
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460 |
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461 if (nargin == 1) |
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462 { |
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463 octave_value_list tmp = args(0).list_value (); |
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464 |
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465 if (! error_state) |
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4233
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466 retval = octave_value (tmp.reverse ()); |
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2882
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467 } |
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468 else |
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5823
|
469 print_usage (); |
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2882
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470 |
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471 return retval; |
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472 } |
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473 |
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3196
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474 DEFUN (splice, args, , |
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3447
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475 "-*- texinfo -*-\n\ |
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476 @deftypefn {Built-in Function} {} splice (@var{list_1}, @var{offset}, @var{length}, @var{list_2})\n\ |
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477 Replace @var{length} elements of @var{list_1} beginning at\n\ |
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478 @var{offset} with the contents of @var{list_2} (if any). If\n\ |
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479 @var{length} is omitted, all elements from @var{offset} to the end of\n\ |
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480 @var{list_1} are replaced. As a special case, if @var{offset} is one\n\ |
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481 greater than the length of @var{list_1} and @var{length} is 0, splice\n\ |
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3448
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482 is equivalent to @code{append (@var{list_1}, @var{list_2})}.\n\ |
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3447
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483 @end deftypefn") |
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3196
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484 { |
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485 octave_value retval; |
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486 |
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487 int nargin = args.length (); |
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488 |
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489 if (nargin > 1 && nargin < 5) |
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490 { |
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491 octave_value_list list_1 = args(0).list_value (); |
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492 |
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493 if (! error_state) |
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494 { |
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3202
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495 int offset = args(1).int_value (true); |
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3196
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496 |
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497 if (! error_state) |
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498 { |
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3202
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499 offset--; |
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500 |
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501 int length = 0; |
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502 |
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503 octave_value_list list_2; |
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3196
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504 |
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3202
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505 if (nargin < 3) |
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506 length = list_1.length () - offset; |
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507 else |
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508 { |
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509 length = args(2).int_value (true); |
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3196
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510 |
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3202
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511 if (! error_state) |
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3196
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512 { |
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3202
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513 if (nargin == 4) |
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514 { |
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515 list_2 = args(3).list_value (); |
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3196
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516 |
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3202
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517 if (error_state) |
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518 error ("splice: fourth argument must be a list"); |
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3196
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519 } |
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520 } |
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3202
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521 else |
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522 error ("splice: LENGTH must be an integer"); |
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523 } |
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3196
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524 |
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3202
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525 if (! error_state) |
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4233
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526 retval = octave_value (list_1.splice (offset, length, list_2)); |
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3196
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527 } |
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528 else |
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529 error ("splice: OFFSET must be an integer"); |
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530 } |
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531 else |
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532 error ("splice: first argument must be a list"); |
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533 } |
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534 else |
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5823
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535 print_usage (); |
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3196
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536 |
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537 return retval; |
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538 } |
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539 |
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4687
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540 bool |
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6974
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541 octave_list::save_ascii (std::ostream& os) |
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4687
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542 { |
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543 octave_value_list lst = list_value (); |
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544 os << "# length: " << lst.length () << "\n"; |
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545 |
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546 for (int i = 0; i < lst.length (); ++i) |
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547 { |
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548 // should we use lst.name_tags () to label the elements? |
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5717
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549 |
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5765
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550 std::ostringstream buf; |
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551 buf << "_" << i; |
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552 std::string s = buf.str (); |
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5717
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553 |
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6974
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554 bool b = save_ascii_data (os, lst (i), s.c_str (), false, 0); |
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4687
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555 |
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556 if (! b) |
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557 return false; |
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558 } |
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559 |
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560 return true; |
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561 } |
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562 |
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563 bool |
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564 octave_list::load_ascii (std::istream& is) |
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565 { |
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566 int len = 0; |
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567 bool success = true; |
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568 |
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569 if (extract_keyword (is, "length", len) && len >= 0) |
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570 { |
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571 if (len > 0) |
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572 { |
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573 octave_value_list lst; |
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574 |
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575 for (int j = 0; j < len; j++) |
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576 { |
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577 octave_value t2; |
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578 bool dummy; |
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579 |
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580 // recurse to read list elements |
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581 std::string nm |
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5757
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582 = read_ascii_data (is, std::string (), dummy, t2, j); |
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4687
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583 |
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584 if (!is) |
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585 break; |
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586 |
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587 lst.append (t2); |
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588 } |
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589 |
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590 if (is) |
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591 data = lst; |
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592 else |
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593 { |
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594 error ("load: failed to load list"); |
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595 success = false; |
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596 } |
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597 } |
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598 else if (len == 0 ) |
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599 data = Cell (0, 0); |
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600 else |
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601 panic_impossible (); |
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602 } |
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603 else { |
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604 error ("load: failed to extract number of elements in list"); |
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605 success = false; |
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606 } |
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607 |
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608 return success; |
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609 } |
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610 |
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611 bool |
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612 octave_list::save_binary (std::ostream& os, bool& save_as_floats) |
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613 { |
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614 octave_value_list lst = list_value (); |
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615 |
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5828
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616 int32_t len = lst.length(); |
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5760
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617 os.write (reinterpret_cast<char *> (&len), 4); |
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4687
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618 |
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619 for (int i = 0; i < lst.length (); i++) |
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620 { |
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621 // should we use lst.name_tags () to label the elements? |
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5717
|
622 |
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5765
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623 std::ostringstream buf; |
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624 buf << "_" << i; |
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625 std::string s = buf.str (); |
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4687
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626 |
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627 // Recurse to print sub-value. |
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5717
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628 bool b = save_binary_data (os, lst(i), s.c_str (), "", 0, |
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629 save_as_floats); |
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4687
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630 |
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631 if (! b) |
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632 return false; |
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633 } |
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634 |
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635 return true; |
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636 } |
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637 |
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638 bool |
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639 octave_list::load_binary (std::istream& is, bool swap, |
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5760
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640 oct_mach_info::float_format fmt) |
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4687
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641 { |
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5828
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642 int32_t len; |
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5760
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643 if (! is.read (reinterpret_cast<char *> (&len), 4)) |
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4687
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644 return false; |
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645 if (swap) |
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4944
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646 swap_bytes<4> (&len); |
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4687
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647 |
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648 if (len > 0) |
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649 { |
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650 octave_value_list lst; |
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651 |
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5275
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652 for (octave_idx_type i = 0; i < len; i++) |
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4687
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653 { |
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654 octave_value t2; |
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655 bool dummy; |
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656 std::string doc; |
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657 |
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658 // recurse to read list elements |
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659 std::string nm = read_binary_data (is, swap, fmt, std::string (), |
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660 dummy, t2, doc); |
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661 |
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662 if (!is) |
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663 return false; |
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664 |
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665 lst.append(t2); |
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666 } |
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667 |
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668 if (is) |
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669 data = lst; |
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670 else |
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671 { |
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672 error ("load: failed to load list"); |
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673 return false; |
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674 } |
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675 |
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676 } |
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677 else if (len == 0 ) |
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678 data = Cell (0, 0); |
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679 else |
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680 return false; |
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681 |
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682 return true; |
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683 } |
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684 |
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685 #if defined (HAVE_HDF5) |
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4944
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686 |
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4687
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687 bool |
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688 octave_list::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
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689 { |
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690 hid_t data_hid = -1; |
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691 |
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692 data_hid = H5Gcreate (loc_id, name, 0); |
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693 if (data_hid < 0) return false; |
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694 |
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695 // recursively add each element of the list to this group |
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696 octave_value_list lst = list_value (); |
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697 |
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5275
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698 for (octave_idx_type i = 0; i < lst.length (); ++i) |
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4687
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699 { |
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700 // should we use lst.name_tags () to label the elements? |
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5717
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701 |
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5765
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702 std::ostringstream buf; |
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703 buf << "_" << i; |
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704 std::string s = buf.str (); |
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5717
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705 |
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706 bool retval2 = add_hdf5_data (data_hid, lst (i), s.c_str (), "", |
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4687
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707 false, save_as_floats); |
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708 if (! retval2) |
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709 break; |
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710 } |
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711 |
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712 H5Gclose (data_hid); |
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4837
|
713 |
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4687
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714 return true; |
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715 } |
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716 |
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717 bool |
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718 octave_list::load_hdf5 (hid_t loc_id, const char *name, |
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719 bool have_h5giterate_bug) |
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720 { |
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721 bool retval = false; |
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722 |
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723 hdf5_callback_data dsub; |
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724 |
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4696
|
725 herr_t retval2 = -1; |
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4687
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726 octave_value_list lst; |
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727 int current_item = 0; |
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4696
|
728 #ifdef HAVE_H5GGET_NUM_OBJS |
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729 hsize_t num_obj = 0; |
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5060
|
730 hid_t group_id = H5Gopen (loc_id, name); |
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731 H5Gget_num_objs (group_id, &num_obj); |
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732 H5Gclose (group_id); |
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4696
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733 |
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734 while (current_item < static_cast<int> (num_obj) |
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735 && (retval2 = H5Giterate (loc_id, name, ¤t_item, |
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736 hdf5_read_next_data, &dsub)) > 0) |
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737 #else |
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4687
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738 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, |
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739 hdf5_read_next_data, &dsub)) > 0) |
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4696
|
740 #endif |
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4687
|
741 { |
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742 lst.append (dsub.tc); |
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743 |
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744 if (have_h5giterate_bug) |
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745 current_item++; // H5Giterate returned the last index processed |
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746 } |
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747 |
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748 if (retval2 >= 0) |
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749 { |
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750 data = lst; |
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751 retval = true; |
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752 } |
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753 |
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754 return retval; |
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755 } |
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4944
|
756 |
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4687
|
757 #endif |
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758 |
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2882
|
759 /* |
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760 ;;; Local Variables: *** |
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761 ;;; mode: C++ *** |
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762 ;;; End: *** |
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763 */ |
