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1 /* |
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2 |
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3 Copyright (C) 2003, 2004, 2005, 2006, 2007 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include <iostream> |
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28 |
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29 #include "so-array.h" |
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30 |
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31 #include "defun.h" |
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32 #include "error.h" |
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33 #include "gripes.h" |
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34 #include "ov-streamoff.h" |
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35 #include "oct-obj.h" |
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36 #include "utils.h" |
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37 #include "ov-base-mat.h" |
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38 #include "ov-base-mat.cc" |
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39 |
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40 template class octave_base_matrix<streamoff_array>; |
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41 |
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42 DEFINE_OCTAVE_ALLOCATOR (octave_streamoff); |
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43 |
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44 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_streamoff, |
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45 "streamoff", "streamoff"); |
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46 |
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47 std::streamoff |
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48 octave_streamoff::streamoff_value (void) const |
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49 { |
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50 std::streamoff retval (-1); |
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51 |
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52 if (numel () > 0) |
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53 { |
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54 gripe_implicit_conversion ("Octave:array-as-scalar", |
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55 "streamoff array", "scalar streamoff"); |
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56 |
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57 retval = matrix (0, 0); |
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58 } |
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59 else |
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60 gripe_invalid_conversion ("streamoff array", "scalar streamoff"); |
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61 |
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62 return retval; |
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63 } |
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64 |
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65 void |
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66 octave_streamoff::print (std::ostream& os, bool) const |
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67 { |
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68 print_raw (os); |
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69 newline (os); |
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70 } |
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71 |
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72 void |
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73 octave_streamoff::print_raw (std::ostream& os, bool) const |
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74 { |
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75 dim_vector dv = matrix.dims (); |
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76 os << "<" << dv.str () << " streamoff object>"; |
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77 } |
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78 |
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79 DEFUN (isstreamoff, args, , |
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80 "-*- texinfo -*-\n\ |
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81 @deftypefn {Built-in Function} {} isstreamoff (@var{x})\n\ |
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82 Return true if @var{x} is a streamoff object. Otherwise, return\n\ |
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83 false.\n\ |
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84 @end deftypefn") |
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85 { |
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86 octave_value retval; |
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87 |
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88 if (args.length () == 1) |
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89 retval = args(0).is_streamoff (); |
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90 else |
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91 print_usage (); |
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92 |
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93 return retval; |
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94 } |
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95 |
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96 DEFUN (streamoff, args, , |
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97 "-*- texinfo -*-\n\ |
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98 @deftypefn {Built-in Function} {} streamoff (@var{x})\n\ |
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99 @deftypefnx {Built-in Function} {} streamoff (@var{n}, @var{m})\n\ |
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100 Create a new streamoff array object. If invoked with a single scalar\n\ |
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101 argument, @code{streamoff} returns a square streamoff array with\n\ |
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102 the dimension specified. If you supply two scalar arguments,\n\ |
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103 @code{streamoff} takes them to be the number of rows and columns.\n\ |
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104 If given a vector with two elements, @code{streamoff} uses the values\n\ |
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105 of the elements as the number of rows and columns, respectively.\n\ |
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106 @end deftypefn") |
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107 { |
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108 octave_value retval; |
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109 |
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110 int nargin = args.length (); |
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111 |
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112 dim_vector dims; |
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113 |
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114 switch (nargin) |
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115 { |
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116 case 0: |
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117 dims = dim_vector (0, 0); |
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118 break; |
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119 |
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120 case 1: |
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121 get_dimensions (args(0), "streamoff", dims); |
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122 break; |
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123 |
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124 default: |
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125 { |
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126 dims.resize (nargin); |
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127 |
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128 for (int i = 0; i < nargin; i++) |
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129 { |
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130 dims(i) = args(i).is_empty () ? 0 : args(i).nint_value (); |
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131 |
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132 if (error_state) |
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133 { |
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134 error ("streamoff: expecting scalar arguments"); |
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135 break; |
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136 } |
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137 } |
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138 } |
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139 break; |
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140 } |
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141 |
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142 if (! error_state) |
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143 { |
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144 int ndim = dims.length (); |
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145 |
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146 check_dimensions (dims, "streamoff"); |
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147 |
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148 if (! error_state) |
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149 { |
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150 switch (ndim) |
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151 { |
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152 case 1: |
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153 retval = Cell (dims(0), dims(0), Matrix ()); |
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154 break; |
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155 |
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156 default: |
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157 retval = Cell (dims, Matrix ()); |
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158 break; |
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159 } |
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160 } |
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161 } |
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162 |
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163 return retval; |
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164 } |
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165 |
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166 /* |
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167 ;;; Local Variables: *** |
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168 ;;; mode: C++ *** |
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169 ;;; End: *** |
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170 */ |
