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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 <cctype> |
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29 #include <sstream> |
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30 |
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31 #include "dMatrix.h" |
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32 |
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33 #include "Cell.h" |
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34 #include "defun.h" |
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35 #include "error.h" |
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36 #include "gripes.h" |
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37 #include "ov.h" |
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38 #include "oct-obj.h" |
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39 #include "unwind-prot.h" |
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40 #include "utils.h" |
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41 |
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42 DEFUN (char, args, , |
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43 "-*- texinfo -*-\n\ |
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44 @deftypefn {Built-in Function} {} char (@var{x})\n\ |
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45 @deftypefnx {Built-in Function} {} char (@var{cell_array})\n\ |
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46 @deftypefnx {Built-in Function} {} char (@var{s1}, @var{s2}, @dots{})\n\ |
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47 Create a string array from a numeric matrix, cell array, or list of\n\ |
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48 \n\ |
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49 If the argument is a numeric matrix, each element of the matrix is\n\ |
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50 converted to the corresponding ASCII character. For example,\n\ |
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51 \n\ |
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52 @example\n\ |
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53 @group\n\ |
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54 char ([97, 98, 99])\n\ |
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55 @result{} \"abc\"\n\ |
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56 @end group\n\ |
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57 @end example\n\ |
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58 \n\ |
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59 If the argument is a cell array of strings, the result is a string array\n\ |
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60 with each element corresponding to one element of the cell array.\n\ |
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61 \n\ |
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62 For multiple string arguments, the result is a string array with each\n\ |
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63 element corresponding to the arguments.\n\ |
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64 \n\ |
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65 The returned values are padded with blanks as needed to make each row\n\ |
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66 of the string array have the same length.\n\ |
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67 @end deftypefn") |
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68 { |
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69 octave_value retval; |
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70 |
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71 int nargin = args.length (); |
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72 |
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73 if (nargin == 1) |
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74 retval = args(0).convert_to_str (true, true, |
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75 args(0).is_dq_string () ? '"' : '\''); |
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76 else if (nargin > 1) |
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77 { |
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78 int n_elts = 0; |
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79 |
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80 int max_len = 0; |
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81 |
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82 for (int i = 0; i < nargin; i++) |
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83 { |
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84 string_vector s = args(i).all_strings (); |
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85 |
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86 if (error_state) |
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87 { |
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88 error ("char: unable to convert some args to strings"); |
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89 return retval; |
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90 } |
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91 |
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92 n_elts += s.length (); |
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93 |
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94 int s_max_len = s.max_length (); |
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95 |
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96 if (s_max_len > max_len) |
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97 max_len = s_max_len; |
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98 } |
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99 |
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100 string_vector result (n_elts); |
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101 |
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102 int k = 0; |
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103 |
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104 for (int i = 0; i < nargin; i++) |
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105 { |
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106 string_vector s = args(i).all_strings (); |
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107 |
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108 int n = s.length (); |
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109 |
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110 for (int j = 0; j < n; j++) |
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111 { |
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112 std::string t = s[j]; |
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113 int t_len = t.length (); |
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114 |
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115 if (max_len > t_len) |
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116 t += std::string (max_len - t_len, ' '); |
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117 |
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118 result[k++] = t; |
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119 } |
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120 } |
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121 |
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122 retval = octave_value (result, '\''); |
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123 } |
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124 else |
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125 print_usage (); |
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126 |
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127 return retval; |
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128 } |
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129 |
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130 DEFUN (ischar, args, , |
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131 "-*- texinfo -*-\n\ |
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132 @deftypefn {Built-in Function} {} ischar (@var{a})\n\ |
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133 Return 1 if @var{a} is a string. Otherwise, return 0.\n\ |
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134 @end deftypefn") |
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135 { |
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136 octave_value retval; |
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137 |
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138 int nargin = args.length (); |
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139 |
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140 if (nargin == 1 && args(0).is_defined ()) |
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141 retval = args(0).is_string (); |
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142 else |
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143 print_usage (); |
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144 |
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145 return retval; |
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146 } |
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147 |
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148 DEFUN (strcmp, args, , |
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149 "-*- texinfo -*-\n\ |
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150 @deftypefn {Function File} {} strcmp (@var{s1}, @var{s2})\n\ |
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151 Return 1 if the character strings @var{s1} and @var{s2} are the same,\n\ |
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152 and 0 otherwise.\n\ |
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153 \n\ |
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154 If either @var{s1} or @var{s2} is a cell array of strings, then an array\n\ |
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155 of the same size is returned, containing the values described above for\n\ |
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156 every member of the cell array. The other argument may also be a cell\n\ |
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157 array of strings (of the same size or with only one element), char matrix\n\ |
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158 or character string.\n\ |
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159 \n\ |
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160 @strong{Caution:} For compatibility with @sc{Matlab}, Octave's strcmp\n\ |
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161 function returns 1 if the character strings are equal, and 0 otherwise.\n\ |
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162 This is just the opposite of the corresponding C library function.\n\ |
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163 @seealso{strcmpi, strncmp, strncmpi}\n\ |
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164 @end deftypefn") |
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165 { |
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166 octave_value retval; |
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167 |
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168 if (args.length () == 2) |
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169 { |
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170 bool s1_string = args(0).is_string (); |
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171 bool s1_cell = args(0).is_cell (); |
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172 bool s2_string = args(1).is_string (); |
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173 bool s2_cell = args(1).is_cell (); |
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174 |
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175 if (s1_string && s2_string) |
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176 { |
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177 // Must match exactly in all dimensions. |
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178 |
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179 const dim_vector dv1 = args(0).dims (); |
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180 const dim_vector dv2 = args(1).dims (); |
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181 |
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182 if (dv1.length () == dv2.length ()) |
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183 { |
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184 for (int i = 0; i < dv1.length (); i++) |
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185 { |
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186 if (dv1(i) != dv2(i)) |
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187 { |
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188 retval = false; |
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189 return retval; |
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190 } |
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191 } |
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192 |
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193 if (dv1(0) == 0) |
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194 retval = true; |
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195 else |
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196 { |
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197 charNDArray s1 = args(0).char_array_value (); |
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198 charNDArray s2 = args(1).char_array_value (); |
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199 |
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200 for (int i = 0; i < dv1.numel (); i++) |
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201 { |
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202 if (s1(i) != s2(i)) |
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203 { |
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204 retval = false; |
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205 return retval; |
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206 } |
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207 } |
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208 |
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209 retval = true; |
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210 } |
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211 } |
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212 } |
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213 else if ((s1_string && s2_cell) || (s1_cell && s2_string)) |
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214 { |
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215 string_vector str; |
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216 Cell cell; |
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217 int r; |
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218 |
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219 if (s1_string) |
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220 { |
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221 str = args(0).all_strings (); |
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222 r = args(0).rows (); |
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223 cell = args(1).cell_value (); |
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224 } |
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225 else |
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226 { |
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227 str = args(1).all_strings (); |
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228 r = args(1).rows (); |
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229 cell = args(0).cell_value (); |
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230 } |
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231 |
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232 if (r == 1) |
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233 { |
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234 // Broadcast the string. |
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235 |
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236 boolNDArray output (cell.dimensions); |
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237 |
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238 for (int i = 0; i < cell.length (); i++) |
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239 if (cell(i).is_string ()) |
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240 output(i) = (cell(i).string_value () == str[0]); |
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241 else |
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242 output(i) = false; |
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243 |
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244 retval = output; |
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245 } |
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246 else if (r > 1) |
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247 { |
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248 if (cell.length () == 1) |
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249 { |
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250 // Broadcast the cell. |
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251 |
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252 const dim_vector dv (r, 1); |
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253 boolNDArray output (dv); |
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254 |
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255 if (cell(0).is_string ()) |
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256 { |
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257 const std::string str2 = cell(0).string_value (); |
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258 |
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259 for (int i = 0; i < r; i++) |
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260 output(i) = (str[i] == str2); |
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261 } |
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262 else |
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263 { |
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264 for (int i = 0; i < r; i++) |
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265 output(i) = false; |
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266 } |
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267 |
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268 retval = output; |
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269 } |
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270 else |
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271 { |
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272 // Must match in all dimensions. |
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273 |
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274 boolNDArray output (cell.dimensions); |
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275 |
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276 if (cell.length () == r) |
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277 { |
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278 for (int i = 0; i < r; i++) |
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279 if (cell(i).is_string ()) |
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280 output(i) = (str[i] == cell(i).string_value ()); |
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281 else |
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282 output(i) = false; |
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283 |
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284 retval = output; |
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285 } |
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286 else |
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287 retval = false; |
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288 } |
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289 } |
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290 } |
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291 else if (s1_cell && s2_cell) |
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292 { |
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293 Cell cell1; |
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294 Cell cell2; |
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295 |
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296 int r1 = args(0).numel (); |
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297 int r2; |
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298 |
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299 if (r1 == 1) |
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300 { |
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301 // Make the singleton cell2. |
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302 |
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303 cell1 = args(1).cell_value (); |
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304 cell2 = args(0).cell_value (); |
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305 r1 = cell1.length (); |
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306 r2 = 1; |
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307 } |
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308 else |
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309 { |
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310 cell1 = args(0).cell_value (); |
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311 cell2 = args(1).cell_value (); |
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312 r2 = cell2.length (); |
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313 } |
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314 |
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315 const dim_vector size1 = cell1.dimensions; |
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316 const dim_vector size2 = cell2.dimensions; |
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317 |
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318 boolNDArray output (size1); |
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319 |
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320 if (r2 == 1) |
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321 { |
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322 // Broadcast cell2. |
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323 |
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324 if (! cell2(0).is_string ()) |
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325 { |
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326 for (int i = 0; i < r1; i++) |
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327 output(i) = false; |
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328 } |
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329 else |
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330 { |
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331 const std::string str2 = cell2(0).string_value (); |
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332 |
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333 for (int i = 0; i < r1; i++) |
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334 { |
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335 if (cell1(i).is_string ()) |
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336 { |
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337 const std::string str1 = cell1(i).string_value (); |
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338 output(i) = (str1 == str2); |
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339 } |
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340 else |
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341 output(i) = false; |
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342 } |
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343 } |
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344 } |
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345 else |
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346 { |
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347 if (size1 != size2) |
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348 { |
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349 error ("strcmp: nonconformant cell arrays"); |
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350 return retval; |
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351 } |
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352 |
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353 for (int i = 0; i < r1; i++) |
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354 { |
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355 if (cell1(i).is_string () && cell2(i).is_string ()) |
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356 { |
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357 const std::string str1 = cell1(i).string_value (); |
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358 const std::string str2 = cell2(i).string_value (); |
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359 output(i) = (str1 == str2); |
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360 } |
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361 else |
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362 output(i) = false; |
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363 } |
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364 } |
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365 |
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366 retval = output; |
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367 } |
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368 else |
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369 retval = false; |
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370 } |
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371 else |
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372 print_usage (); |
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373 |
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374 return retval; |
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375 } |
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376 |
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377 DEFUN (list_in_columns, args, , |
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378 "-*- texinfo -*-\n\ |
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379 @deftypefn {Built-in Function} {} list_in_columns (@var{arg}, @var{width})\n\ |
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380 Return a string containing the elements of @var{arg} listed in\n\ |
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381 columns with an overall maximum width of @var{width}. The argument\n\ |
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382 @var{arg} must be a cell array of character strings or a character array.\n\ |
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383 If @var{width} is not specified, the width of the terminal screen is used.\n\ |
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384 @seealso{terminal_size}\n\ |
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385 @end deftypefn") |
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386 { |
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387 octave_value retval; |
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388 |
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389 int nargin = args.length (); |
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390 |
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391 if (nargin == 1 || nargin == 2) |
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392 { |
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393 string_vector s = args(0).all_strings (); |
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394 |
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395 if (! error_state) |
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396 { |
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5765
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397 std::ostringstream buf; |
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398 |
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399 if (nargin == 1) |
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400 // Let list_in_columns query terminal width. |
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401 s.list_in_columns (buf); |
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402 else |
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403 { |
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404 int width = args(1).int_value (); |
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405 |
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406 if (! error_state) |
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407 s.list_in_columns (buf, width); |
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408 else |
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409 error ("list_in_columns: expecting width to be an integer"); |
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410 } |
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411 |
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412 retval = buf.str (); |
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413 } |
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414 else |
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415 error ("list_in_columns: expecting cellstr or char array"); |
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416 } |
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417 else |
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5823
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418 print_usage (); |
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5690
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419 |
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420 return retval; |
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421 } |
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422 |
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807
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423 /* |
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424 ;;; Local Variables: *** |
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425 ;;; mode: C++ *** |
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426 ;;; End: *** |
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427 */ |
