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1 /* |
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2 |
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2847
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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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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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3933
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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 "gripes.h" |
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2979
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37 #include "oct-lvalue.h" |
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38 #include "ov-list.h" |
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39 #include "ov-struct.h" |
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40 #include "unwind-prot.h" |
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2948
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41 #include "variables.h" |
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42 |
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4687
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43 #include "byte-swap.h" |
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44 #include "ls-oct-ascii.h" |
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45 #include "ls-oct-binary.h" |
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46 #include "ls-hdf5.h" |
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47 #include "ls-utils.h" |
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48 |
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3219
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49 DEFINE_OCTAVE_ALLOCATOR(octave_struct); |
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50 |
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4612
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51 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA(octave_struct, "struct", "struct"); |
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52 |
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53 Cell |
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54 octave_struct::dotref (const octave_value_list& idx) |
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2962
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55 { |
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56 Cell retval; |
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57 |
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58 assert (idx.length () == 1); |
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2962
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59 |
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60 std::string nm = idx(0).string_value (); |
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61 |
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4219
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62 Octave_map::const_iterator p = map.seek (nm); |
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63 |
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64 if (p != map.end ()) |
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65 retval = map.contents (p); |
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66 else |
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67 error ("structure has no member `%s'", nm.c_str ()); |
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68 |
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69 return retval; |
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70 } |
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71 |
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4513
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72 #if 0 |
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73 static void |
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74 gripe_invalid_index (void) |
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75 { |
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76 error ("invalid index for structure array"); |
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77 } |
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78 #endif |
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79 |
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80 static void |
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81 gripe_invalid_index_for_assignment (void) |
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82 { |
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83 error ("invalid index for structure array assignment"); |
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84 } |
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85 |
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86 static void |
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87 gripe_invalid_index_type (const std::string& nm, char t) |
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88 { |
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89 error ("%s cannot be indexed with %c", nm.c_str (), t); |
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90 } |
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91 |
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92 static void |
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93 gripe_failed_assignment (void) |
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94 { |
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95 error ("assignment to structure element failed"); |
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96 } |
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97 |
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98 octave_value |
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99 octave_struct::subsref (const std::string& type, |
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100 const std::list<octave_value_list>& idx) |
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101 { |
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102 octave_value retval; |
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103 |
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104 int skip = 1; |
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105 |
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106 switch (type[0]) |
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107 { |
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108 case '(': |
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109 { |
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110 if (type.length () > 1 && type[1] == '.') |
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111 { |
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112 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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113 octave_value_list key_idx = *++p; |
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114 |
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115 Cell tmp = dotref (key_idx); |
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116 |
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117 if (! error_state) |
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118 { |
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119 Cell t = tmp.index (idx.front ()); |
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120 |
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121 retval = (t.length () == 1) ? t(0) : octave_value (t, true); |
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122 |
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123 // We handled two index elements, so tell |
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124 // next_subsref to skip both of them. |
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125 |
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126 skip++; |
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127 } |
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128 } |
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129 else |
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130 retval = map.index (idx.front ()); |
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131 } |
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132 break; |
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133 |
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134 case '.': |
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135 { |
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136 Cell t = dotref (idx.front ()); |
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137 |
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138 retval = (t.length () == 1) ? t(0) : octave_value (t, true); |
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139 } |
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140 break; |
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141 |
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142 case '{': |
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143 gripe_invalid_index_type (type_name (), type[0]); |
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144 break; |
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145 |
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146 default: |
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147 panic_impossible (); |
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148 } |
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149 |
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150 if (! error_state) |
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151 retval = retval.next_subsref (type, idx, skip); |
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152 |
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153 return retval; |
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154 } |
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155 |
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156 octave_value |
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157 octave_struct::numeric_conv (const Cell& val, |
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158 const std::string& type) |
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159 { |
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160 octave_value retval; |
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161 |
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162 if (val.length () == 1) |
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163 { |
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164 retval = val(0); |
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165 |
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166 if (type.length () > 0 && type[0] == '.' && ! retval.is_map ()) |
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167 retval = Octave_map (); |
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168 } |
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169 else |
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170 gripe_invalid_index_for_assignment (); |
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171 |
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172 return retval; |
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173 } |
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174 |
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175 octave_value |
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176 octave_struct::subsasgn (const std::string& type, |
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177 const std::list<octave_value_list>& idx, |
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178 const octave_value& rhs) |
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179 { |
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180 octave_value retval; |
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181 |
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182 int n = type.length (); |
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183 |
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184 octave_value t_rhs = rhs; |
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185 |
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186 if (n > 1 && ! (type.length () == 2 && type[0] == '(' && type[1] == '.')) |
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187 { |
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188 switch (type[0]) |
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189 { |
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190 case '(': |
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191 { |
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192 if (type.length () > 1 && type[1] == '.') |
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193 { |
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194 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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195 octave_value_list t_idx = *p; |
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196 |
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197 octave_value_list key_idx = *++p; |
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198 |
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199 assert (key_idx.length () == 1); |
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200 |
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201 std::string key = key_idx(0).string_value (); |
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202 |
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203 octave_value u; |
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204 |
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205 if (! map.contains (key)) |
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206 u = octave_value::empty_conv (type.substr (2), rhs); |
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207 else |
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208 { |
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209 Cell map_val = map.contents (key); |
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210 |
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211 Cell map_elt = map_val.index (idx.front (), true); |
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212 |
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213 u = numeric_conv (map_elt, type.substr (2)); |
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214 } |
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215 |
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216 if (! error_state) |
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217 { |
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218 std::list<octave_value_list> next_idx (idx); |
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219 |
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220 // We handled two index elements, so subsasgn to |
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221 // needs to skip both of them. |
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222 |
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223 next_idx.erase (next_idx.begin ()); |
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224 next_idx.erase (next_idx.begin ()); |
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225 |
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226 u.make_unique (); |
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227 |
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228 t_rhs = u.subsasgn (type.substr (2), next_idx, rhs); |
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229 } |
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230 } |
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231 else |
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232 gripe_invalid_index_for_assignment (); |
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233 } |
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234 break; |
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235 |
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236 case '.': |
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237 { |
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238 octave_value_list key_idx = idx.front (); |
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239 |
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240 assert (key_idx.length () == 1); |
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241 |
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242 std::string key = key_idx(0).string_value (); |
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243 |
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244 octave_value u; |
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245 |
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246 if (! map.contains (key)) |
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247 u = octave_value::empty_conv (type.substr (1), rhs); |
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248 else |
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249 { |
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250 Cell map_val = map.contents (key); |
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251 |
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252 u = numeric_conv (map_val, type.substr (1)); |
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253 } |
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254 |
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255 if (! error_state) |
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256 { |
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257 std::list<octave_value_list> next_idx (idx); |
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258 |
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259 next_idx.erase (next_idx.begin ()); |
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260 |
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4059
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261 u.make_unique (); |
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262 |
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263 t_rhs = u.subsasgn (type.substr (1), next_idx, rhs); |
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264 } |
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265 } |
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266 break; |
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267 |
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268 case '{': |
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269 gripe_invalid_index_type (type_name (), type[0]); |
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270 break; |
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271 |
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272 default: |
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273 panic_impossible (); |
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274 } |
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275 } |
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276 |
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277 if (! error_state) |
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278 { |
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279 switch (type[0]) |
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280 { |
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281 case '(': |
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282 { |
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283 if (n > 1 && type[1] == '.') |
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284 { |
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285 std::list<octave_value_list>::const_iterator p = idx.begin (); |
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286 octave_value_list key_idx = *++p; |
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287 |
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288 assert (key_idx.length () == 1); |
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289 |
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290 std::string key = key_idx(0).string_value (); |
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291 |
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292 if (! error_state) |
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293 { |
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294 map.assign (idx.front (), key, t_rhs); |
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295 |
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4513
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296 if (! error_state) |
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297 retval = octave_value (this, count + 1); |
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298 else |
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4513
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299 gripe_failed_assignment (); |
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300 } |
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301 else |
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302 gripe_failed_assignment (); |
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303 } |
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304 else |
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4197
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305 { |
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4513
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306 Octave_map rhs_map = t_rhs.map_value (); |
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4197
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307 |
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4513
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308 if (! error_state) |
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4197
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309 { |
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4513
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310 map.assign (idx.front (), rhs_map); |
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4197
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311 |
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312 if (! error_state) |
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4513
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313 retval = octave_value (this, count + 1); |
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4197
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314 else |
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4513
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315 gripe_failed_assignment (); |
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4197
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316 } |
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4513
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317 else |
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318 error ("invalid structure assignment"); |
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4197
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319 } |
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3933
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320 } |
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321 break; |
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322 |
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323 case '.': |
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324 { |
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325 octave_value_list key_idx = idx.front (); |
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326 |
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327 assert (key_idx.length () == 1); |
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328 |
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329 std::string key = key_idx(0).string_value (); |
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330 |
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331 map.assign (key, t_rhs); |
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332 |
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333 if (! error_state) |
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334 retval = octave_value (this, count + 1); |
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335 else |
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336 gripe_failed_assignment (); |
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337 } |
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338 break; |
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339 |
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340 case '{': |
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341 gripe_invalid_index_type (type_name (), type[0]); |
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342 break; |
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343 |
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344 default: |
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345 panic_impossible (); |
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346 } |
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347 } |
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348 else |
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349 gripe_failed_assignment (); |
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350 |
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351 return retval; |
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352 } |
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353 |
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354 void |
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3523
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355 octave_struct::print (std::ostream& os, bool) const |
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356 { |
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357 print_raw (os); |
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358 } |
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359 |
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360 void |
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3523
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361 octave_struct::print_raw (std::ostream& os, bool) const |
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362 { |
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363 // XXX FIXME XXX -- would be nice to print the output in some |
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364 // standard order. Maybe all substructures first, maybe |
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365 // alphabetize entries, etc. |
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366 |
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2985
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367 unwind_protect::begin_frame ("octave_struct_print"); |
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368 |
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369 unwind_protect_int (Vstruct_levels_to_print); |
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370 |
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3961
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371 if (Vstruct_levels_to_print >= 0) |
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372 { |
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3961
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373 bool print_keys_only = (Vstruct_levels_to_print == 0); |
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374 |
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375 Vstruct_levels_to_print--; |
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376 |
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2901
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377 indent (os); |
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378 os << "{"; |
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379 newline (os); |
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380 |
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2901
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381 increment_indent_level (); |
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382 |
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4561
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383 int n = map.numel (); |
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384 |
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4604
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385 if (n > 1 && print_keys_only) |
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386 { |
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387 indent (os); |
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388 dim_vector dv = dims (); |
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389 os << dv.str () << " struct array containing the fields:"; |
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390 newline (os); |
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391 newline (os); |
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392 |
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393 increment_indent_level (); |
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394 } |
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395 |
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4219
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396 for (Octave_map::const_iterator p = map.begin (); p != map.end (); p++) |
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397 { |
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3523
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398 std::string key = map.key (p); |
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4513
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399 Cell val = map.contents (p); |
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400 |
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4499
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401 octave_value tmp = (n == 1) ? val(0) : octave_value (val, true); |
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3961
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402 |
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403 if (print_keys_only) |
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3932
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404 { |
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3961
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405 indent (os); |
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4604
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406 os << key; |
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407 if (n == 1) |
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408 { |
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409 dim_vector dv = tmp.dims (); |
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410 os << ": " << dv.str () << " " << tmp.type_name (); |
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411 } |
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3961
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412 newline (os); |
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3932
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413 } |
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3961
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414 else |
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4121
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415 tmp.print_with_name (os, key); |
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2376
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416 } |
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417 |
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4604
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418 if (n > 1 && print_keys_only) |
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419 decrement_indent_level (); |
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420 |
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2901
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421 decrement_indent_level (); |
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422 |
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2901
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423 indent (os); |
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424 os << "}"; |
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425 newline (os); |
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2376
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426 } |
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427 else |
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2901
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428 { |
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3961
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429 indent (os); |
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430 os << "<structure>"; |
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2901
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431 newline (os); |
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432 } |
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2376
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433 |
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2985
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434 unwind_protect::run_frame ("octave_struct_print"); |
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2376
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435 } |
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436 |
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2901
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437 bool |
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3523
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438 octave_struct::print_name_tag (std::ostream& os, const std::string& name) const |
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2901
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439 { |
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3961
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440 bool retval = false; |
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441 |
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2901
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442 indent (os); |
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3961
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443 |
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444 if (Vstruct_levels_to_print < 0) |
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445 os << name << " = "; |
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446 else |
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447 { |
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448 os << name << " ="; |
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449 newline (os); |
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450 retval = true; |
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451 } |
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452 |
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453 return retval; |
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2901
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454 } |
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455 |
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4358
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456 DEFUN (isstruct, args, , |
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457 "-*- texinfo -*-\n\ |
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458 @deftypefn {Built-in Function} {} isstruct (@var{expr})\n\ |
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459 Return 1 if the value of the expression @var{expr} is a structure.\n\ |
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460 @end deftypefn") |
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461 { |
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462 octave_value retval; |
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463 |
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464 if (args.length () == 1) |
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465 retval = args(0).is_map (); |
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466 else |
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467 print_usage ("isstruct"); |
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468 |
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469 return retval; |
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470 } |
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471 |
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472 DEFUN (fieldnames, args, , |
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473 "-*- texinfo -*-\n\ |
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474 @deftypefn {Built-in Function} {} fieldnames (@var{struct})\n\ |
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475 Return a cell array of strings naming the elements of the structure\n\ |
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476 @var{struct}. It is an error to call @code{fieldnames} with an\n\ |
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477 argument that is not a structure.\n\ |
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478 @end deftypefn") |
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|
479 { |
|
|
480 octave_value retval; |
|
|
481 |
|
|
482 int nargin = args.length (); |
|
|
483 |
|
|
484 if (nargin == 1) |
|
|
485 { |
|
|
486 if (args(0).is_map ()) |
|
|
487 { |
|
|
488 Octave_map m = args(0).map_value (); |
|
|
489 retval = Cell (m.keys ()); |
|
|
490 } |
|
|
491 else |
|
|
492 gripe_wrong_type_arg ("fieldnames", args(0)); |
|
|
493 } |
|
|
494 else |
|
|
495 print_usage ("fieldnames"); |
|
|
496 |
|
|
497 return retval; |
|
|
498 } |
|
|
499 |
|
|
500 DEFUN (isfield, args, , |
|
|
501 "-*- texinfo -*-\n\ |
|
|
502 @deftypefn {Built-in Function} {} isfield (@var{expr}, @var{name})\n\ |
|
|
503 Return true if the expression @var{expr} is a structure and it includes an\n\ |
|
|
504 element named @var{name}. The first argument must be a structure and\n\ |
|
|
505 the second must be a string.\n\ |
|
|
506 @end deftypefn") |
|
|
507 { |
|
|
508 octave_value retval; |
|
|
509 |
|
|
510 int nargin = args.length (); |
|
|
511 |
|
|
512 if (nargin == 2) |
|
|
513 { |
|
|
514 retval = false; |
|
|
515 |
|
|
516 // XXX FIXME XXX -- should this work for all types that can do |
|
|
517 // structure reference operations? |
|
|
518 |
|
|
519 if (args(0).is_map () && args(1).is_string ()) |
|
|
520 { |
|
|
521 std::string key = args(1).string_value (); |
|
|
522 |
|
|
523 Octave_map m = args(0).map_value (); |
|
|
524 |
|
|
525 retval = m.contains (key) != 0; |
|
|
526 } |
|
|
527 else |
|
|
528 print_usage ("isfield"); |
|
|
529 } |
|
|
530 else |
|
|
531 print_usage ("isfield"); |
|
|
532 |
|
|
533 return retval; |
|
|
534 } |
|
|
535 |
|
4687
|
536 bool |
|
|
537 octave_struct::save_ascii (std::ostream& os, bool& infnan_warned, |
|
|
538 bool strip_nan_and_inf) |
|
|
539 { |
|
|
540 Octave_map m = map_value (); |
|
|
541 os << "# length: " << m.length () << "\n"; |
|
|
542 |
|
|
543 Octave_map::iterator i = m.begin (); |
|
|
544 while (i != m.end ()) |
|
|
545 { |
|
|
546 Cell val = map.contents (i); |
|
|
547 octave_value tmp = (map.numel () == 1) ? val(0) : |
|
|
548 octave_value (val, true); |
|
|
549 |
|
|
550 bool b = save_ascii_data (os, tmp, m.key (i), infnan_warned, |
|
|
551 strip_nan_and_inf, 0, 0); |
|
|
552 |
|
|
553 if (! b) |
|
|
554 return os; |
|
|
555 |
|
|
556 i++; |
|
|
557 } |
|
|
558 |
|
|
559 return true; |
|
|
560 } |
|
|
561 |
|
|
562 bool |
|
|
563 octave_struct::load_ascii (std::istream& is) |
|
|
564 { |
|
|
565 int len = 0; |
|
|
566 bool success = true; |
|
|
567 |
|
|
568 if (extract_keyword (is, "length", len) && len >= 0) |
|
|
569 { |
|
|
570 if (len > 0) |
|
|
571 { |
|
|
572 Octave_map m (map); |
|
|
573 |
|
|
574 for (int j = 0; j < len; j++) |
|
|
575 { |
|
|
576 octave_value t2; |
|
|
577 bool dummy; |
|
|
578 |
|
|
579 // recurse to read cell elements |
|
|
580 std::string nm |
|
|
581 = read_ascii_data (is, std::string (), dummy, t2, count); |
|
|
582 |
|
|
583 if (!is) |
|
|
584 break; |
|
|
585 |
|
|
586 m.assign (nm, t2); |
|
|
587 } |
|
|
588 |
|
|
589 if (is) |
|
|
590 map = m; |
|
|
591 else |
|
|
592 { |
|
|
593 error ("load: failed to load structure"); |
|
|
594 success = false; |
|
|
595 } |
|
|
596 } |
|
|
597 else if (len == 0 ) |
|
|
598 map = Octave_map (); |
|
|
599 else |
|
|
600 panic_impossible (); |
|
|
601 } |
|
|
602 else { |
|
|
603 error ("load: failed to extract number of elements in structure"); |
|
|
604 success = false; |
|
|
605 } |
|
|
606 |
|
|
607 return success; |
|
|
608 } |
|
|
609 |
|
|
610 bool |
|
|
611 octave_struct::save_binary (std::ostream& os, bool& save_as_floats) |
|
|
612 { |
|
|
613 Octave_map m = map_value (); |
|
|
614 |
|
|
615 FOUR_BYTE_INT len = m.length(); |
|
|
616 os.write (X_CAST (char *, &len), 4); |
|
|
617 |
|
|
618 Octave_map::iterator i = m.begin (); |
|
|
619 while (i != m.end ()) |
|
|
620 { |
|
|
621 Cell val = map.contents (i); |
|
|
622 octave_value tmp = (map.numel () == 1) ? val(0) : |
|
|
623 octave_value (val, true); |
|
|
624 |
|
|
625 bool b = save_binary_data (os, tmp, m.key (i), "", 0, save_as_floats); |
|
|
626 |
|
|
627 if (! b) |
|
|
628 return os; |
|
|
629 |
|
|
630 i++; |
|
|
631 } |
|
|
632 |
|
|
633 return true; |
|
|
634 } |
|
|
635 |
|
|
636 bool |
|
|
637 octave_struct::load_binary (std::istream& is, bool swap, |
|
|
638 oct_mach_info::float_format fmt) |
|
|
639 { |
|
|
640 bool success = true; |
|
|
641 FOUR_BYTE_INT len; |
|
|
642 if (! is.read (X_CAST (char *, &len), 4)) |
|
|
643 return false; |
|
|
644 if (swap) |
|
|
645 swap_4_bytes (X_CAST (char *, &len)); |
|
|
646 |
|
|
647 if (len > 0) |
|
|
648 { |
|
|
649 Octave_map m (map); |
|
|
650 |
|
|
651 for (int j = 0; j < len; j++) |
|
|
652 { |
|
|
653 octave_value t2; |
|
|
654 bool dummy; |
|
|
655 std::string doc; |
|
|
656 |
|
|
657 // recurse to read cell elements |
|
|
658 std::string nm = read_binary_data (is, swap, fmt, std::string (), |
|
|
659 dummy, t2, doc); |
|
|
660 |
|
|
661 if (!is) |
|
|
662 break; |
|
|
663 |
|
|
664 m.assign (nm, t2); |
|
|
665 } |
|
|
666 |
|
|
667 if (is) |
|
|
668 map = m; |
|
|
669 else |
|
|
670 { |
|
|
671 error ("load: failed to load structure"); |
|
|
672 success = false; |
|
|
673 } |
|
|
674 } |
|
|
675 else if (len == 0 ) |
|
|
676 map = Octave_map (); |
|
|
677 else |
|
|
678 panic_impossible (); |
|
|
679 |
|
|
680 return success; |
|
|
681 } |
|
|
682 |
|
|
683 #if defined (HAVE_HDF5) |
|
|
684 bool |
|
|
685 octave_struct::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
|
|
686 { |
|
|
687 hid_t data_hid = -1; |
|
|
688 |
|
|
689 data_hid = H5Gcreate (loc_id, name, 0); |
|
|
690 if (data_hid < 0) return false; |
|
|
691 |
|
|
692 // recursively add each element of the structure to this group |
|
|
693 Octave_map m = map_value (); |
|
|
694 Octave_map::iterator i = m.begin (); |
|
|
695 while (i != m.end ()) |
|
|
696 { |
|
|
697 Cell val = map.contents (i); |
|
|
698 octave_value tmp = (map.numel () == 1) ? val(0) : |
|
|
699 octave_value (val, true); |
|
|
700 |
|
|
701 bool retval2 = add_hdf5_data (data_hid, tmp, m.key (i), "", false, |
|
|
702 save_as_floats); |
|
|
703 |
|
|
704 if (! retval2) |
|
|
705 break; |
|
|
706 |
|
|
707 i++; |
|
|
708 } |
|
|
709 |
|
|
710 H5Gclose (data_hid); |
|
|
711 return true; |
|
|
712 } |
|
|
713 |
|
|
714 bool |
|
|
715 octave_struct::load_hdf5 (hid_t loc_id, const char *name, |
|
|
716 bool have_h5giterate_bug) |
|
|
717 { |
|
|
718 bool retval = false; |
|
|
719 |
|
|
720 hdf5_callback_data dsub; |
|
|
721 |
|
|
722 herr_t retval2; |
|
|
723 Octave_map m; |
|
|
724 int current_item = 0; |
|
4696
|
725 #ifdef HAVE_H5GGET_NUM_OBJS |
|
|
726 hsize_t num_obj = 0; |
|
|
727 H5Gget_num_objs (loc_id, &num_obj); |
|
|
728 |
|
|
729 while (current_item < static_cast<int> (num_obj) |
|
|
730 && (retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
731 hdf5_read_next_data, &dsub)) > 0) |
|
|
732 #else |
|
4687
|
733 while ((retval2 = H5Giterate (loc_id, name, ¤t_item, |
|
|
734 hdf5_read_next_data, &dsub)) > 0) |
|
4696
|
735 #endif |
|
4687
|
736 { |
|
|
737 m.assign (dsub.name, dsub.tc); |
|
|
738 |
|
|
739 if (have_h5giterate_bug) |
|
|
740 current_item++; // H5Giterate returned the last index processed |
|
|
741 } |
|
|
742 |
|
|
743 if (retval2 >= 0) |
|
|
744 { |
|
|
745 map = m; |
|
|
746 retval = true; |
|
|
747 } |
|
|
748 |
|
|
749 return retval; |
|
|
750 } |
|
|
751 #endif |
|
|
752 |
|
2376
|
753 /* |
|
|
754 ;;; Local Variables: *** |
|
|
755 ;;; mode: C++ *** |
|
|
756 ;;; End: *** |
|
|
757 */ |
