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1 /* |
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2 |
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3 Copyright (C) 2003 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 |
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30 #include "so-array.h" |
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31 |
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32 #include "defun.h" |
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33 #include "error.h" |
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34 #include "gripes.h" |
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35 #include "ov-streamoff.h" |
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36 #include "oct-obj.h" |
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37 #include "utils.h" |
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38 #include "ov-base-mat.h" |
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39 #include "ov-base-mat.cc" |
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40 |
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41 template class octave_base_matrix<streamoff_array>; |
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42 |
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43 DEFINE_OCTAVE_ALLOCATOR (octave_streamoff); |
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44 |
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45 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_streamoff, |
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46 "streamoff", "streamoff"); |
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47 |
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48 std::streamoff |
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49 octave_streamoff::streamoff_value (void) const |
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50 { |
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51 std::streamoff retval (-1); |
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52 |
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53 if (numel () > 0) |
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54 { |
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55 // XXX FIXME XXX -- is warn_fortran_indexing the right variable here? |
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56 if (Vwarn_fortran_indexing) |
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57 gripe_implicit_conversion ("streamoff array", "scalar streamoff"); |
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58 |
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59 retval = matrix (0, 0); |
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60 } |
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61 else |
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62 gripe_invalid_conversion ("streamoff array", "scalar streamoff"); |
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63 |
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64 return retval; |
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65 } |
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66 |
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67 void |
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68 octave_streamoff::print (std::ostream& os, bool) const |
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69 { |
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70 print_raw (os); |
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71 newline (os); |
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72 } |
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73 |
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74 void |
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75 octave_streamoff::print_raw (std::ostream& os, bool) const |
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76 { |
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77 dim_vector dv = matrix.dims (); |
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78 os << "<" << dv.str () << " streamoff object>"; |
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79 } |
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80 |
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81 DEFUN (isstreamoff, args, , |
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82 "-*- texinfo -*-\n\ |
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83 @deftypefn {Built-in Function} {} isstreamoff (@var{x})\n\ |
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84 Return true if @var{x} is a streamoff object. Otherwise, return\n\ |
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85 false.\n\ |
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86 @end deftypefn") |
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87 { |
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88 octave_value retval; |
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89 |
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90 if (args.length () == 1) |
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91 retval = args(0).is_streamoff (); |
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92 else |
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93 print_usage ("isstreamoff"); |
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94 |
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95 return retval; |
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96 } |
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97 |
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98 DEFUN (streamoff, args, , |
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99 "-*- texinfo -*-\n\ |
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100 @deftypefn {Built-in Function} {} streamoff (@var{x})\n\ |
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101 @deftypefnx {Built-in Function} {} streamoff (@var{n}, @var{m})\n\ |
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102 Create a new streamoff array object. If invoked with a single scalar\n\ |
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103 argument, @code{streamoff} returns a square streamoff array with\n\ |
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104 the dimension specified. If you supply two scalar arguments,\n\ |
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105 @code{streamoff} takes them to be the number of rows and columns.\n\ |
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106 If given a vector with two elements, @code{streamoff} uses the values\n\ |
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107 of the elements as the number of rows and columns, respectively.\n\ |
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108 @end deftypefn") |
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109 { |
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110 octave_value retval; |
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111 |
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112 int nargin = args.length (); |
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113 |
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114 dim_vector dims; |
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115 |
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116 switch (nargin) |
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117 { |
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118 case 0: |
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119 dims = dim_vector (0, 0); |
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120 break; |
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121 |
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122 case 1: |
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123 get_dimensions (args(0), "streamoff", dims); |
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124 break; |
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125 |
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126 default: |
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127 { |
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128 dims.resize (nargin); |
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129 |
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130 for (int i = 0; i < nargin; i++) |
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131 { |
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132 dims(i) = args(i).is_empty () ? 0 : args(i).nint_value (); |
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133 |
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134 if (error_state) |
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135 { |
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136 error ("streamoff: expecting scalar arguments"); |
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137 break; |
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138 } |
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139 } |
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140 } |
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141 break; |
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142 } |
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143 |
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144 if (! error_state) |
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145 { |
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146 int ndim = dims.length (); |
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147 |
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148 check_dimensions (dims, "streamoff"); |
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149 |
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150 if (! error_state) |
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151 { |
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152 switch (ndim) |
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153 { |
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154 case 1: |
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155 retval = Cell (dims(0), dims(0), Matrix ()); |
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156 break; |
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157 |
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158 default: |
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159 retval = Cell (dims, Matrix ()); |
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160 break; |
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161 } |
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162 } |
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163 } |
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164 |
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165 return retval; |
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166 } |
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167 |
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168 /* |
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169 ;;; Local Variables: *** |
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170 ;;; mode: C++ *** |
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171 ;;; End: *** |
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172 */ |
