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1 // Matrix manipulations. |
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2 /* |
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3 |
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4 Copyright (C) 1996 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <cstdio> |
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33 #include <cstring> |
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34 |
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35 #include <string> |
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36 |
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37 #include <iostream.h> |
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38 |
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39 // #include <sys/types.h> // XXX FIXME XXX |
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40 |
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41 #include "lo-error.h" |
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42 #include "str-vec.h" |
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43 #include "mx-base.h" |
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44 #include "mx-inlines.cc" |
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45 |
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46 // charMatrix class. |
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47 |
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48 charMatrix::charMatrix (const char *s) |
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49 : MArray2<char> ((s ? 1 : 0), (s ? strlen (s) : 0)) |
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50 { |
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51 int nc = cols (); |
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52 for (int i = 0; i < nc; i++) |
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53 elem (0, i) = s[i]; |
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54 } |
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55 |
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56 charMatrix::charMatrix (const string& s) |
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57 : MArray2<char> (1, s.length ()) |
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58 { |
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59 int nc = cols (); |
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60 for (int i = 0; i < nc; i++) |
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61 elem (0, i) = s[i]; |
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62 } |
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63 |
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64 charMatrix::charMatrix (const string_vector& s) |
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65 : MArray2<char> (s.length (), s.max_length (), 0) |
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66 { |
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67 int nr = rows (); |
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68 for (int i = 0; i < nr; i++) |
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69 { |
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70 int nc = s[i].length (); |
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71 for (int j = 0; j < nc; j++) |
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72 elem (i, j) = s[i][j]; |
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73 } |
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74 } |
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75 |
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76 int |
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77 charMatrix::operator == (const charMatrix& a) const |
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78 { |
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79 if (rows () != a.rows () || cols () != a.cols ()) |
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80 return 0; |
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81 |
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82 return equal (data (), a.data (), length ()); |
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83 } |
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84 |
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85 int |
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86 charMatrix::operator != (const charMatrix& a) const |
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87 { |
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88 return !(*this == a); |
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89 } |
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90 |
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91 charMatrix& |
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92 charMatrix::insert (const char *s, int r, int c) |
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93 { |
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94 if (s) |
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95 { |
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96 int s_len = strlen (s); |
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97 |
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98 if (r < 0 || r >= rows () || c < 0 || c + s_len - 1 > cols ()) |
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99 { |
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100 (*current_liboctave_error_handler) ("range error for insert"); |
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101 return *this; |
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102 } |
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103 |
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104 for (int i = 0; i < s_len; i++) |
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105 elem (r, c+i) = s[i]; |
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106 } |
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107 return *this; |
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108 } |
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109 |
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110 charMatrix& |
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111 charMatrix::insert (const charMatrix& a, int r, int c) |
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112 { |
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113 Array2<char>::insert (a, r, c); |
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114 return *this; |
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115 } |
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116 |
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117 string |
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118 charMatrix::row_as_string (int r) const |
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119 { |
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120 if (r < 0 || r >= rows ()) |
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121 { |
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122 (*current_liboctave_error_handler) ("range error for row_as_string"); |
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123 return 0; |
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124 } |
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125 |
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126 int nc = cols (); |
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127 |
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128 string retval (nc, '\0'); |
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129 |
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130 for (int i = 0; i < nc; i++) |
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131 retval[i] = elem (r, i); |
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132 |
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133 while (--nc >= 0) |
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134 if (retval[nc]) |
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135 break; |
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136 |
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137 retval.resize (nc+1); |
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138 |
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139 return retval; |
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140 } |
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141 |
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142 charMatrix |
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143 charMatrix::transpose (void) const |
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144 { |
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145 int nr = rows (); |
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146 int nc = cols (); |
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147 charMatrix result (nc, nr); |
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148 if (length () > 0) |
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149 { |
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150 for (int j = 0; j < nc; j++) |
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151 for (int i = 0; i < nr; i++) |
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152 result.elem (j, i) = elem (i, j); |
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153 } |
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154 return result; |
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155 } |
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156 |
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157 /* |
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158 ;;; Local Variables: *** |
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159 ;;; mode: C++ *** |
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160 ;;; End: *** |
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161 */ |
