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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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18 ## 02111-1307, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} strcmp (@var{s1}, @var{s2}) |
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22 ## Compares two strings, returning 1 if they are the same, and 0 otherwise. |
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23 ## |
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24 ## @strong{Note:} For compatibility with @sc{Matlab}, Octave's strcmp |
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25 ## function returns 1 if the strings are equal, and 0 otherwise. This is |
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26 ## just the opposite of the corresponding C library function. |
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27 ## @end deftypefn |
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28 |
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29 ## Author: jwe |
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30 |
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31 function retval = strcmp (s1, s2) |
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32 |
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33 if (nargin != 2) |
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34 usage ("strcmp (s, t)"); |
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35 endif |
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36 |
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37 retval = 0; |
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38 |
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39 if (isstr (s1)) |
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40 [r1, c1] = size (s1); |
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41 if (isstr (s2)) |
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42 [r2, c2] = size (s2); |
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43 if (r1 == r2 && c1 == c2) |
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44 if (c1 == 0) |
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45 retval = 1; |
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46 else |
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47 retval = all (all (s1 == s2)); |
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48 endif |
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49 endif |
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50 elseif (iscell (s2)) |
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51 [r2, c2] = size (s2); |
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52 if (r1 == 1) |
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53 t2 = s2(:); |
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54 n = length (t2); |
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55 retval = zeros (n, 1); |
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56 for i = 1:n |
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57 retval(i) = strcmp (s1, t2{i}); |
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58 endfor |
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59 retval = reshape (retval, r2, c2); |
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60 elseif (r1 > 1) |
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61 if (r2 == 1 && c2 == 1) |
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62 t2 = s2{1}; |
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63 retval = zeros (r1, 1); |
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64 for i = 1:r1 |
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65 retval(i) = strcmp (deblank (s1(i,:)), t2); |
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66 endfor |
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67 else |
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68 t2 = s2(:); |
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69 n = length (t2); |
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70 if (n == r1) |
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71 retval = zeros (n, 1); |
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72 for i = 1:n |
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73 retval(i) = strcmp (deblank (s1(i,:)), t2{i}); |
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74 endfor |
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75 retval = reshape (retval, r2, c2); |
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76 endif |
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77 endif |
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78 endif |
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79 endif |
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80 elseif (iscell (s1)) |
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81 [r1, c1] = size (s1); |
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82 if (isstr (s2)) |
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83 [r2, c2] = size (s2); |
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84 if (r2 == 1) |
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85 t1 = s1(:); |
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86 n = length (t1); |
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87 retval = zeros (n, 1); |
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88 for i = 1:n |
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89 retval(i) = strcmp (t1{i}, s2); |
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90 endfor |
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91 retval = reshape (retval, r1, c1); |
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92 elseif (r2 > 1) |
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93 if (r1 == 1 && c1 == 1) |
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94 t1 = s1{1}; |
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95 retval = zeros (r2, 1); |
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96 for i = 1:r2 |
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97 retval(i) = strcmp (t1, deblank (s2(i,:))); |
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98 endfor |
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99 else |
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100 t1 = s1(:); |
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101 n = length (t1); |
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102 if (n == r2) |
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103 retval = zeros (n, 1); |
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104 for i = 1:n |
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105 retval(i) = strcmp (t2{i}, deblank (s2(i,:))); |
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106 endfor |
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107 retval = reshape (retval, r1, c1); |
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108 endif |
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109 endif |
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110 endif |
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111 elseif (iscell (s2)) |
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112 [r2, c2] = size (s2); |
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113 if (r1 == 1 && c1 == 1) |
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114 t1 = s1{:}; |
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115 t2 = s2(:); |
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116 n = length (t2); |
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117 retval = zeros (n, 1); |
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118 for i = 1:n |
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119 retval(i) = strcmp (t1, t2{i}); |
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120 endfor |
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121 retval = reshape (retval, r2, c2); |
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122 elseif (r2 == 1 && c2 == 1) |
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123 t1 = s1(:); |
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124 t2 = s2{:}; |
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125 n = length (t1); |
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126 retval = zeros (n, 1); |
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127 for i = 1:n |
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128 retval(i) = strcmp (t1{i}, t2); |
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129 endfor |
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130 retval = reshape (retval, r1, c1); |
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131 elseif (r1 == r2 && c1 == c2) |
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132 t1 = s1(:); |
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133 t2 = s2(:); |
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134 n = length (t1); |
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135 for i = 1:n |
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136 retval(i) = strcmp (t1{i}, t2{i}); |
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137 endfor |
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138 retval = reshape (retval, r1, c1); |
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139 else |
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140 error ("strcmp: nonconformant cell arrays"); |
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141 endif |
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142 endif |
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143 endif |
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144 |
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145 endfunction |
