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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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4192
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23 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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3503
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31 #include <iostream> |
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32 |
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4051
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33 #include "lo-sstream.h" |
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34 #include "lo-utils.h" |
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35 |
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4513
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36 #include "Cell.h" |
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37 #include "defun.h" |
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38 #include "error.h" |
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39 #include "ov-list.h" |
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40 #include "unwind-prot.h" |
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41 |
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4687
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42 #include "byte-swap.h" |
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43 #include "ls-oct-ascii.h" |
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44 #include "ls-oct-binary.h" |
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45 #include "ls-hdf5.h" |
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46 #include "ls-utils.h" |
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47 |
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3219
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48 DEFINE_OCTAVE_ALLOCATOR (octave_list); |
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49 |
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4612
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50 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_list, "list", "list"); |
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51 |
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4513
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52 octave_list::octave_list (const Cell& c) |
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53 : octave_base_value (), data () |
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4513
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54 { |
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55 int n = c.length (); |
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56 |
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57 data.resize (dim_vector (1, n)); |
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58 |
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59 for (int i = 0; i < n; i++) |
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60 data(i) = c(i); |
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61 } |
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62 |
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63 octave_value |
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4247
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64 octave_list::subsref (const std::string& type, |
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65 const std::list<octave_value_list>& idx) |
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66 { |
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67 octave_value retval; |
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68 |
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69 switch (type[0]) |
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70 { |
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71 case '(': |
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72 { |
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73 octave_value_list tmp_idx = idx.front (); |
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74 |
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75 if (tmp_idx.length () == 1) |
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76 { |
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77 idx_vector i = tmp_idx (0).index_vector (); |
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78 |
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79 retval = octave_list (data.index (i)); |
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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 = tmp(0); |
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98 } |
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99 else |
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100 error ("only one index allowed for lists"); |
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101 } |
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102 break; |
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103 |
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104 case '.': |
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105 { |
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106 std::string nm = type_name (); |
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107 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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108 } |
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109 break; |
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110 |
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111 default: |
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112 panic_impossible (); |
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113 } |
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114 |
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115 return retval.next_subsref (type, idx); |
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116 } |
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117 |
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118 octave_value |
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119 octave_list::do_index_op (const octave_value_list& idx, int resize_ok) |
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120 { |
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121 octave_value retval; |
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122 |
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123 if (idx.length () == 1) |
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124 { |
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125 idx_vector i = idx (0).index_vector (); |
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126 |
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127 retval = octave_list (data.index (i, resize_ok)); |
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128 } |
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129 else |
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130 error ("lists may only be indexed by a single scalar"); |
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131 |
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132 return retval; |
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133 } |
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134 |
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135 octave_value |
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136 octave_list::subsasgn (const std::string& type, |
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137 const std::list<octave_value_list>& idx, |
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138 const octave_value& rhs) |
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139 { |
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140 octave_value retval; |
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141 |
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142 int n = type.length (); |
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143 |
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144 octave_value t_rhs = rhs; |
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145 |
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146 if (n > 1) |
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147 { |
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148 switch (type[0]) |
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149 { |
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150 case '(': |
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151 { |
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152 octave_value tmp = do_index_op (idx.front (), true); |
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153 |
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154 if (! tmp.is_defined ()) |
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155 tmp = octave_value::empty_conv (type.substr (1), rhs); |
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156 |
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157 if (! error_state) |
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158 { |
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4219
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159 std::list<octave_value_list> next_idx (idx); |
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160 |
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161 next_idx.erase (next_idx.begin ()); |
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162 |
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163 t_rhs = tmp.subsasgn (type.substr (1), next_idx, rhs); |
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164 } |
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165 } |
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166 break; |
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167 |
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168 case '{': |
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169 case '.': |
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170 { |
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171 std::string nm = type_name (); |
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172 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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173 } |
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174 break; |
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175 |
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176 default: |
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177 panic_impossible (); |
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178 } |
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179 } |
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180 |
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3940
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181 if (! error_state) |
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182 { |
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183 switch (type[0]) |
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184 { |
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185 case '(': |
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186 { |
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187 octave_value_list i = idx.front (); |
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188 |
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189 assign (i, t_rhs); |
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190 |
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191 retval = octave_value (this, count + 1); |
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192 } |
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193 break; |
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194 |
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195 case '{': |
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196 case '.': |
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197 { |
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198 std::string nm = type_name (); |
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199 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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200 } |
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201 break; |
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202 |
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203 default: |
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204 panic_impossible (); |
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205 } |
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206 } |
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207 |
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208 return retval; |
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209 } |
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210 |
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211 void |
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212 octave_list::assign (const octave_value_list& idx, const octave_value& rhs) |
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213 { |
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214 if (idx.length () == 1) |
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215 { |
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216 int i = idx(0).int_value (true); |
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217 |
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218 if (! error_state) |
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219 { |
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220 int n = data.length (); |
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221 |
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4461
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222 if (i > 0) |
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223 { |
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224 if (Vwarn_resize_on_range_error && i > n) |
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225 warning ("list index = %d out of range", i); |
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226 |
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227 data(i-1) = rhs; |
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228 } |
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229 else |
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230 error ("list index = %d out of range", i); |
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231 } |
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232 else |
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233 error ("list index must be an integer"); |
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234 } |
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235 else |
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236 error ("lists may only be indexed by a single scalar"); |
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237 } |
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238 |
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239 octave_value_list |
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240 octave_list::list_value (void) const |
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241 { |
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242 octave_value_list retval; |
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243 |
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244 int n = data.length (); |
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245 |
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246 retval.resize (n); |
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247 |
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248 for (int i = 0; i < n; i++) |
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249 retval(i) = data(i); |
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250 |
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251 return retval; |
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252 } |
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253 |
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254 void |
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255 octave_list::print (std::ostream& os, bool) const |
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256 { |
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257 print_raw (os); |
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258 } |
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259 |
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260 void |
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3523
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261 octave_list::print_raw (std::ostream& os, bool) const |
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262 { |
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2985
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263 unwind_protect::begin_frame ("octave_list_print"); |
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264 |
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265 int n = data.length (); |
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266 |
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267 if (n > 0) |
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268 { |
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269 indent (os); |
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270 os << "("; |
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271 newline (os); |
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272 |
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273 increment_indent_level (); |
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274 |
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275 for (int i = 0; i < n; i++) |
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276 { |
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277 OSSTREAM buf; |
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278 |
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279 buf << "[" << i+1 << "]" << OSSTREAM_ENDS; |
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280 |
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281 octave_value val = data(i); |
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282 |
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283 val.print_with_name (os, OSSTREAM_STR (buf)); |
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284 |
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285 OSSTREAM_FREEZE (buf); |
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286 } |
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287 |
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288 decrement_indent_level (); |
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289 |
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290 indent (os); |
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291 os << ")"; |
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292 } |
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293 else |
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294 os << "()"; |
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295 |
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296 newline (os); |
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297 |
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298 unwind_protect::run_frame ("octave_list_print"); |
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299 } |
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300 |
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301 bool |
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302 octave_list::print_name_tag (std::ostream& os, const std::string& name) const |
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303 { |
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304 indent (os); |
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305 if (data.length () == 0) |
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306 os << name << " = "; |
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307 else |
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308 { |
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309 os << name << " ="; |
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310 newline (os); |
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311 } |
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312 return false; |
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313 } |
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314 |
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315 DEFUN (list, args, , |
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316 "-*- texinfo -*-\n\ |
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317 @deftypefn {Built-in Function} {} list (@var{a1}, @var{a2}, @dots{})\n\ |
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318 Create a new list with elements given by the arguments @var{a1},\n\ |
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319 @var{a2}, @dots{}.\n\ |
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320 @end deftypefn") |
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321 { |
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322 static bool warned = false; |
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323 |
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324 if (! warned) |
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325 { |
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326 warning ("list objects are deprecated; use cell arrays instead"); |
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327 warned = true; |
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328 } |
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329 |
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330 return octave_value (args); |
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331 } |
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332 |
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333 DEFUN (nth, args, , |
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334 "-*- texinfo -*-\n\ |
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335 @deftypefn {Built-in Function} {} nth (@var{list}, @var{n})\n\ |
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336 Return the @var{n}-th element of @var{list}.\n\ |
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337 @end deftypefn") |
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338 { |
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339 octave_value retval; |
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340 |
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341 if (args.length () == 2) |
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342 { |
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343 octave_value_list lst = args(0).list_value (); |
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344 |
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345 if (! error_state) |
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346 { |
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347 int n = args(1).int_value (true); |
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348 |
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349 if (! error_state) |
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350 { |
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351 if (n > 0 && n <= lst.length ()) |
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352 retval = lst(n-1); |
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353 else |
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354 error ("nth: index = %d out of range", n); |
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355 } |
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356 else |
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357 error ("nth: second argument must be an integer"); |
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358 } |
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359 else |
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360 error ("nth: first argument must be a list"); |
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361 } |
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362 else |
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363 print_usage ("nth"); |
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364 |
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365 return retval; |
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366 } |
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367 |
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368 DEFUN (append, args, , |
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369 "-*- texinfo -*-\n\ |
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370 @deftypefn {Built-in Function} {} append (@var{list}, @var{a1}, @var{a2}, @dots{})\n\ |
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371 Return a new list created by appending @var{a1}, @var{a1}, @dots{}, to\n\ |
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372 @var{list}. If any of the arguments to be appended is a list, its\n\ |
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373 elements are appended individually. For example,\n\ |
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374 \n\ |
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375 @example\n\ |
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376 x = list (1, 2);\n\ |
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377 y = list (3, 4);\n\ |
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378 append (x, y);\n\ |
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379 @end example\n\ |
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380 \n\ |
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381 @noindent\n\ |
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382 results in the list containing the four elements @samp{(1 2 3 4)}, not\n\ |
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383 a list containing the three elements @samp{(1 2 (3 4))}.\n\ |
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384 @end deftypefn") |
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385 { |
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386 octave_value retval; |
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387 |
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388 int nargin = args.length (); |
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389 |
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390 if (nargin > 1) |
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391 { |
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392 octave_value_list tmp = args(0).list_value (); |
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393 |
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394 if (! error_state) |
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395 { |
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396 for (int i = 1; i < nargin; i++) |
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3219
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397 { |
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398 octave_value ov = args(i); |
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399 |
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400 if (ov.is_list ()) |
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401 tmp.append (ov.list_value ()); |
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402 else |
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403 tmp.append (ov); |
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404 } |
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405 |
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4233
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406 retval = octave_value (tmp); |
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407 } |
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408 } |
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409 else |
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410 print_usage ("append"); |
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411 |
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412 return retval; |
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413 } |
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414 |
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415 DEFUN (reverse, args, , |
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3447
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416 "-*- texinfo -*-\n\ |
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417 @deftypefn {Built-in Function} {} reverse (@var{list})\n\ |
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418 Return a new list created by reversing the elements of @var{list}.\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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4233
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430 retval = octave_value (tmp.reverse ()); |
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2882
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431 } |
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432 else |
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433 print_usage ("reverse"); |
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434 |
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435 return retval; |
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436 } |
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437 |
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3196
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438 DEFUN (splice, args, , |
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3447
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439 "-*- texinfo -*-\n\ |
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440 @deftypefn {Built-in Function} {} splice (@var{list_1}, @var{offset}, @var{length}, @var{list_2})\n\ |
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441 Replace @var{length} elements of @var{list_1} beginning at\n\ |
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442 @var{offset} with the contents of @var{list_2} (if any). If\n\ |
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443 @var{length} is omitted, all elements from @var{offset} to the end of\n\ |
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444 @var{list_1} are replaced. As a special case, if @var{offset} is one\n\ |
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445 greater than the length of @var{list_1} and @var{length} is 0, splice\n\ |
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3448
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446 is equivalent to @code{append (@var{list_1}, @var{list_2})}.\n\ |
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3447
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447 @end deftypefn") |
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3196
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448 { |
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449 octave_value retval; |
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450 |
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451 int nargin = args.length (); |
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452 |
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453 if (nargin > 1 && nargin < 5) |
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454 { |
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455 octave_value_list list_1 = args(0).list_value (); |
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456 |
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457 if (! error_state) |
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458 { |
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3202
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459 int offset = args(1).int_value (true); |
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3196
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460 |
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461 if (! error_state) |
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462 { |
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3202
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463 offset--; |
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464 |
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465 int length = 0; |
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466 |
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467 octave_value_list list_2; |
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3196
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468 |
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3202
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469 if (nargin < 3) |
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470 length = list_1.length () - offset; |
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471 else |
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472 { |
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473 length = args(2).int_value (true); |
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3196
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474 |
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3202
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475 if (! error_state) |
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3196
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476 { |
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3202
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477 if (nargin == 4) |
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478 { |
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479 list_2 = args(3).list_value (); |
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3196
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480 |
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3202
|
481 if (error_state) |
|
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482 error ("splice: fourth argument must be a list"); |
|
3196
|
483 } |
|
|
484 } |
|
3202
|
485 else |
|
|
486 error ("splice: LENGTH must be an integer"); |
|
|
487 } |
|
3196
|
488 |
|
3202
|
489 if (! error_state) |
|
4233
|
490 retval = octave_value (list_1.splice (offset, length, list_2)); |
|
3196
|
491 } |
|
|
492 else |
|
|
493 error ("splice: OFFSET must be an integer"); |
|
|
494 } |
|
|
495 else |
|
|
496 error ("splice: first argument must be a list"); |
|
|
497 } |
|
|
498 else |
|
|
499 print_usage ("splice"); |
|
|
500 |
|
|
501 return retval; |
|
|
502 } |
|
|
503 |
|
4687
|
504 bool |
|
|
505 octave_list::save_ascii (std::ostream& os, bool& infnan_warned, |
|
|
506 bool strip_nan_and_inf) |
|
|
507 { |
|
|
508 octave_value_list lst = list_value (); |
|
|
509 os << "# length: " << lst.length () << "\n"; |
|
|
510 |
|
|
511 for (int i = 0; i < lst.length (); ++i) |
|
|
512 { |
|
|
513 // should we use lst.name_tags () to label the elements? |
|
|
514 char s[20]; |
|
|
515 sprintf (s, "_%d", i); |
|
|
516 bool b = save_ascii_data (os, lst (i), s, infnan_warned, |
|
|
517 strip_nan_and_inf, 0, 0); |
|
|
518 |
|
|
519 if (! b) |
|
|
520 return false; |
|
|
521 } |
|
|
522 |
|
|
523 return true; |
|
|
524 } |
|
|
525 |
|
|
526 bool |
|
|
527 octave_list::load_ascii (std::istream& is) |
|
|
528 { |
|
|
529 int len = 0; |
|
|
530 bool success = true; |
|
|
531 |
|
|
532 if (extract_keyword (is, "length", len) && len >= 0) |
|
|
533 { |
|
|
534 if (len > 0) |
|
|
535 { |
|
|
536 octave_value_list lst; |
|
|
537 |
|
|
538 for (int j = 0; j < len; j++) |
|
|
539 { |
|
|
540 octave_value t2; |
|
|
541 bool dummy; |
|
|
542 |
|
|
543 // recurse to read list elements |
|
|
544 std::string nm |
|
|
545 = read_ascii_data (is, std::string (), dummy, t2, count); |
|
|
546 |
|
|
547 if (!is) |
|
|
548 break; |
|
|
549 |
|
|
550 lst.append (t2); |
|
|
551 } |
|
|
552 |
|
|
553 if (is) |
|
|
554 data = lst; |
|
|
555 else |
|
|
556 { |
|
|
557 error ("load: failed to load list"); |
|
|
558 success = false; |
|
|
559 } |
|
|
560 } |
|
|
561 else if (len == 0 ) |
|
|
562 data = Cell (0, 0); |
|
|
563 else |
|
|
564 panic_impossible (); |
|
|
565 } |
|
|
566 else { |
|
|
567 error ("load: failed to extract number of elements in list"); |
|
|
568 success = false; |
|
|
569 } |
|
|
570 |
|
|
571 return success; |
|
|
572 } |
|
|
573 |
|
|
574 bool |
|
|
575 octave_list::save_binary (std::ostream& os, bool& save_as_floats) |
|
|
576 { |
|
|
577 octave_value_list lst = list_value (); |
|
|
578 |
|
|
579 FOUR_BYTE_INT len = lst.length(); |
|
|
580 os.write (X_CAST (char *, &len), 4); |
|
|
581 |
|
|
582 for (int i = 0; i < lst.length (); i++) |
|
|
583 { |
|
|
584 // should we use lst.name_tags () to label the elements? |
|
|
585 char s[20]; |
|
|
586 sprintf (s, "_%d", i); |
|
|
587 |
|
|
588 // Recurse to print sub-value. |
|
|
589 bool b = save_binary_data (os, lst(i), s, "", 0, save_as_floats); |
|
|
590 |
|
|
591 if (! b) |
|
|
592 return false; |
|
|
593 } |
|
|
594 |
|
|
595 return true; |
|
|
596 } |
|
|
597 |
|
|
598 bool |
|
|
599 octave_list::load_binary (std::istream& is, bool swap, |
|
|
600 oct_mach_info::float_format fmt) |
|
|
601 { |
|
|
602 FOUR_BYTE_INT len; |
|
|
603 if (! is.read (X_CAST (char *, &len), 4)) |
|
|
604 return false; |
|
|
605 if (swap) |
|
|
606 swap_4_bytes (X_CAST (char *, &len)); |
|
|
607 |
|
|
608 if (len > 0) |
|
|
609 { |
|
|
610 octave_value_list lst; |
|
|
611 |
|
|
612 for (int i = 0; i < len; i++) |
|
|
613 { |
|
|
614 octave_value t2; |
|
|
615 bool dummy; |
|
|
616 std::string doc; |
|
|
617 |
|
|
618 // recurse to read list elements |
|
|
619 std::string nm = read_binary_data (is, swap, fmt, std::string (), |
|
|
620 dummy, t2, doc); |
|
|
621 |
|
|
622 if (!is) |
|
|
623 return false; |
|
|
624 |
|
|
625 lst.append(t2); |
|
|
626 } |
|
|
627 |
|
|
628 if (is) |
|
|
629 data = lst; |
|
|
630 else |
|
|
631 { |
|
|
632 error ("load: failed to load list"); |
|
|
633 return false; |
|
|
634 } |
|
|
635 |
|
|
636 } |
|
|
637 else if (len == 0 ) |
|
|
638 data = Cell (0, 0); |
|
|
639 else |
|
|
640 return false; |
|
|
641 |
|
|
642 return true; |
|
|
643 } |
|
|
644 |
|
|
645 #if defined (HAVE_HDF5) |
|
|
646 bool |
|
|
647 octave_list::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
|
|
648 { |
|
|
649 hid_t data_hid = -1; |
|
|
650 |
|
|
651 data_hid = H5Gcreate (loc_id, name, 0); |
|
|
652 if (data_hid < 0) return false; |
|
|
653 |
|
|
654 // recursively add each element of the list to this group |
|
|
655 octave_value_list lst = list_value (); |
|
|
656 |
|
|
657 for (int i = 0; i < lst.length (); ++i) |
|
|
658 { |
|
|
659 // should we use lst.name_tags () to label the elements? |
|
|
660 char s[20]; |
|
|
661 sprintf (s, "_%d", i); |
|
|
662 bool retval2 = add_hdf5_data (data_hid, lst (i), s, "", |
|
|
663 false, save_as_floats); |
|
|
664 if (! retval2) |
|
|
665 break; |
|
|
666 } |
|
|
667 |
|
|
668 H5Gclose (data_hid); |
|
|
669 return true; |
|
|
670 } |
|
|
671 |
|
|
672 bool |
|
|
673 octave_list::load_hdf5 (hid_t loc_id, const char *name, |
|
|
674 bool have_h5giterate_bug) |
|
|
675 { |
|
|
676 bool retval = false; |
|
|
677 |
|
|
678 hdf5_callback_data dsub; |
|
|
679 |
|
|
680 herr_t retval2; |
|
|
681 octave_value_list lst; |
|
|
682 int current_item = 0; |
|
|
683 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
684 hdf5_read_next_data, &dsub)) > 0) |
|
|
685 { |
|
|
686 lst.append (dsub.tc); |
|
|
687 |
|
|
688 if (have_h5giterate_bug) |
|
|
689 current_item++; // H5Giterate returned the last index processed |
|
|
690 } |
|
|
691 |
|
|
692 if (retval2 >= 0) |
|
|
693 { |
|
|
694 data = lst; |
|
|
695 retval = true; |
|
|
696 } |
|
|
697 |
|
|
698 return retval; |
|
|
699 } |
|
|
700 #endif |
|
|
701 |
|
2882
|
702 /* |
|
|
703 ;;; Local Variables: *** |
|
|
704 ;;; mode: C++ *** |
|
|
705 ;;; End: *** |
|
|
706 */ |
