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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, 1997 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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21 02110-1301, USA. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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26 #include <config.h> |
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27 #endif |
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28 |
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29 #include <iostream> |
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30 #include <string> |
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31 |
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32 #include "lo-error.h" |
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33 #include "str-vec.h" |
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34 #include "mx-base.h" |
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35 #include "mx-inlines.cc" |
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36 |
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37 // charMatrix class. |
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38 |
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39 charMatrix::charMatrix (char c) |
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40 : MArray2<char> () |
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41 { |
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42 octave_idx_type nc = 1; |
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43 octave_idx_type nr = 1; |
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44 |
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45 resize (nr, nc); |
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46 |
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47 elem (0, 0) = c; |
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48 } |
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49 |
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50 charMatrix::charMatrix (const char *s) |
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51 : MArray2<char> () |
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52 { |
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53 octave_idx_type nc = s ? strlen (s) : 0; |
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54 octave_idx_type nr = s && nc > 0 ? 1 : 0; |
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55 |
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56 resize (nr, nc); |
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57 |
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58 for (octave_idx_type i = 0; i < nc; i++) |
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59 elem (0, i) = s[i]; |
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60 } |
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61 |
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62 charMatrix::charMatrix (const std::string& s) |
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63 : MArray2<char> () |
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64 { |
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65 octave_idx_type nc = s.length (); |
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66 octave_idx_type nr = nc > 0 ? 1 : 0; |
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67 |
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68 resize (nr, nc); |
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69 |
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70 for (octave_idx_type i = 0; i < nc; i++) |
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71 elem (0, i) = s[i]; |
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72 } |
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73 |
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74 charMatrix::charMatrix (const string_vector& s) |
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75 : MArray2<char> (s.length (), s.max_length (), 0) |
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76 { |
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77 octave_idx_type nr = rows (); |
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78 |
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79 for (octave_idx_type i = 0; i < nr; i++) |
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80 { |
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81 octave_idx_type nc = s[i].length (); |
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82 for (octave_idx_type j = 0; j < nc; j++) |
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83 elem (i, j) = s[i][j]; |
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84 } |
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85 } |
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86 |
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87 bool |
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88 charMatrix::operator == (const charMatrix& a) const |
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89 { |
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90 if (rows () != a.rows () || cols () != a.cols ()) |
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91 return 0; |
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92 |
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93 return mx_inline_equal (data (), a.data (), length ()); |
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94 } |
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95 |
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96 bool |
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97 charMatrix::operator != (const charMatrix& a) const |
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98 { |
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99 return !(*this == a); |
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100 } |
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101 |
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102 charMatrix& |
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103 charMatrix::insert (const char *s, octave_idx_type r, octave_idx_type c) |
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104 { |
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105 if (s) |
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106 { |
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107 octave_idx_type s_len = strlen (s); |
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108 |
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109 if (r < 0 || r >= rows () || c < 0 || c + s_len - 1 > cols ()) |
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110 { |
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111 (*current_liboctave_error_handler) ("range error for insert"); |
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112 return *this; |
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113 } |
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114 |
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115 for (octave_idx_type i = 0; i < s_len; i++) |
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116 elem (r, c+i) = s[i]; |
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117 } |
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118 return *this; |
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119 } |
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120 |
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121 charMatrix& |
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122 charMatrix::insert (const charMatrix& a, octave_idx_type r, octave_idx_type c) |
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123 { |
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124 Array2<char>::insert (a, r, c); |
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125 return *this; |
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126 } |
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127 |
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128 std::string |
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129 charMatrix::row_as_string (octave_idx_type r, bool strip_ws, bool raw) const |
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130 { |
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131 std::string retval; |
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132 |
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133 octave_idx_type nr = rows (); |
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134 octave_idx_type nc = cols (); |
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135 |
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136 if (r == 0 && nr == 0 && nc == 0) |
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137 return retval; |
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138 |
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139 if (r < 0 || r >= nr) |
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140 { |
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141 (*current_liboctave_error_handler) ("range error for row_as_string"); |
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142 return retval; |
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143 } |
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144 |
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145 retval.resize (nc, '\0'); |
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146 |
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147 for (octave_idx_type i = 0; i < nc; i++) |
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148 retval[i] = elem (r, i); |
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149 |
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150 if (! raw) |
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151 { |
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152 if (strip_ws) |
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153 { |
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154 while (--nc >= 0) |
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155 { |
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156 char c = retval[nc]; |
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157 if (c && c != ' ') |
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158 break; |
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159 } |
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160 } |
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161 else |
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162 { |
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163 while (--nc >= 0) |
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164 if (retval[nc]) |
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165 break; |
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166 } |
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167 |
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168 retval.resize (nc+1); |
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169 } |
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170 |
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171 return retval; |
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172 } |
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173 |
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174 charMatrix |
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175 charMatrix::extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const |
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176 { |
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177 if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; } |
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178 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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179 |
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180 octave_idx_type new_r = r2 - r1 + 1; |
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181 octave_idx_type new_c = c2 - c1 + 1; |
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182 |
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183 charMatrix result (new_r, new_c); |
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184 |
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185 for (octave_idx_type j = 0; j < new_c; j++) |
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186 for (octave_idx_type i = 0; i < new_r; i++) |
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187 result.elem (i, j) = elem (r1+i, c1+j); |
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188 |
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189 return result; |
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190 } |
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191 |
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192 charMatrix |
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193 charMatrix::diag (void) const |
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194 { |
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195 return diag (0); |
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196 } |
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197 |
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198 charMatrix |
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199 charMatrix::diag (octave_idx_type k) const |
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200 { |
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201 octave_idx_type nnr = rows (); |
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202 octave_idx_type nnc = cols (); |
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203 if (k > 0) |
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204 nnc -= k; |
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205 else if (k < 0) |
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206 nnr += k; |
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207 |
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208 charMatrix d; |
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209 |
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210 if (nnr > 0 && nnc > 0) |
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211 { |
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212 octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc; |
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213 |
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214 d.resize (ndiag, 1); |
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215 |
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216 if (k > 0) |
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217 { |
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218 for (octave_idx_type i = 0; i < ndiag; i++) |
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219 d.xelem (i) = elem (i, i+k); |
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220 } |
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221 else if (k < 0) |
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222 { |
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223 for (octave_idx_type i = 0; i < ndiag; i++) |
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224 d.xelem (i) = elem (i-k, i); |
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225 } |
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226 else |
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227 { |
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228 for (octave_idx_type i = 0; i < ndiag; i++) |
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229 d.xelem (i) = elem (i, i); |
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230 } |
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231 } |
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232 else |
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233 (*current_liboctave_error_handler) |
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234 ("diag: requested diagonal out of range"); |
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235 |
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236 return d; |
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237 } |
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238 |
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239 // FIXME Do these really belong here? Maybe they should be |
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240 // in a base class? |
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241 |
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242 boolMatrix |
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243 charMatrix::all (int dim) const |
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244 { |
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245 MX_ALL_OP (dim); |
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246 } |
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247 |
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248 boolMatrix |
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249 charMatrix::any (int dim) const |
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250 { |
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251 MX_ANY_OP (dim); |
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252 } |
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253 |
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254 MS_CMP_OPS(charMatrix, , char, ) |
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255 MS_BOOL_OPS(charMatrix, char, 0) |
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256 |
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257 SM_CMP_OPS(char, , charMatrix, ) |
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258 SM_BOOL_OPS(char, charMatrix, 0) |
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259 |
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260 MM_CMP_OPS(charMatrix, , charMatrix, ) |
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261 MM_BOOL_OPS(charMatrix, charMatrix, 0) |
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262 |
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263 /* |
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264 ;;; Local Variables: *** |
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265 ;;; mode: C++ *** |
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266 ;;; End: *** |
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267 */ |
