|
807
|
1 /* |
|
|
2 |
|
2847
|
3 Copyright (C) 1996, 1997 John W. Eaton |
|
807
|
4 |
|
|
5 This file is part of Octave. |
|
|
6 |
|
|
7 Octave is free software; you can redistribute it and/or modify it |
|
|
8 under the terms of the GNU General Public License as published by the |
|
|
9 Free Software Foundation; either version 2, or (at your option) any |
|
|
10 later version. |
|
|
11 |
|
|
12 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
15 for more details. |
|
|
16 |
|
|
17 You should have received a copy of the GNU General Public License |
|
|
18 along with Octave; see the file COPYING. If not, write to the Free |
|
5307
|
19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
|
20 02110-1301, USA. |
|
807
|
21 |
|
|
22 */ |
|
|
23 |
|
|
24 #ifdef HAVE_CONFIG_H |
|
1192
|
25 #include <config.h> |
|
807
|
26 #endif |
|
|
27 |
|
1355
|
28 #include <cctype> |
|
807
|
29 |
|
|
30 #include "dMatrix.h" |
|
|
31 |
|
1355
|
32 #include "defun.h" |
|
807
|
33 #include "error.h" |
|
|
34 #include "gripes.h" |
|
2366
|
35 #include "ov.h" |
|
1355
|
36 #include "oct-obj.h" |
|
4457
|
37 #include "unwind-prot.h" |
|
807
|
38 #include "utils.h" |
|
|
39 |
|
4358
|
40 DEFUN (char, args, , |
|
|
41 "-*- texinfo -*-\n\ |
|
|
42 @deftypefn {Built-in Function} {} char (@var{x})\n\ |
|
|
43 @deftypefnx {Built-in Function} {} char (@var{cell_array})\n\ |
|
|
44 @deftypefnx {Built-in Function} {} char (@var{s1}, @var{s2}, @dots{})\n\ |
|
|
45 Create a string array from a numeric matrix, cell array, or list of\n\ |
|
|
46 \n\ |
|
|
47 If the argument is a numeric matrix, each element of the matrix is\n\ |
|
|
48 converted to the corresponding ASCII character. For example,\n\ |
|
|
49 \n\ |
|
|
50 @example\n\ |
|
|
51 @group\n\ |
|
4734
|
52 char ([97, 98, 99])\n\ |
|
4358
|
53 @result{} \"abc\"\n\ |
|
|
54 @end group\n\ |
|
|
55 @end example\n\ |
|
|
56 \n\ |
|
|
57 If the argument is a cell array of strings, the result is a string array\n\ |
|
|
58 with each element corresponding to one element of the cell array.\n\ |
|
|
59 \n\ |
|
|
60 For multiple string arguments, the result is a string array with each\n\ |
|
|
61 element corresponding to the arguments.\n\ |
|
|
62 \n\ |
|
|
63 The returned values are padded with blanks as needed to make each row\n\ |
|
|
64 of the string array have the same length.\n\ |
|
|
65 @end deftypefn") |
|
|
66 { |
|
|
67 octave_value retval; |
|
|
68 |
|
|
69 int nargin = args.length (); |
|
|
70 |
|
|
71 if (nargin == 1) |
|
5281
|
72 retval = args(0).convert_to_str (true, true, |
|
|
73 args(0).is_dq_string () ? '"' : '\''); |
|
4358
|
74 else if (nargin > 1) |
|
|
75 { |
|
|
76 int n_elts = 0; |
|
|
77 |
|
|
78 int max_len = 0; |
|
|
79 |
|
|
80 for (int i = 0; i < nargin; i++) |
|
|
81 { |
|
4457
|
82 string_vector s = args(i).all_strings (false, true); |
|
4358
|
83 |
|
|
84 if (error_state) |
|
|
85 { |
|
4457
|
86 error ("char: unable to convert some args to strings"); |
|
4358
|
87 return retval; |
|
|
88 } |
|
|
89 |
|
|
90 n_elts += s.length (); |
|
|
91 |
|
|
92 int s_max_len = s.max_length (); |
|
|
93 |
|
|
94 if (s_max_len > max_len) |
|
|
95 max_len = s_max_len; |
|
|
96 } |
|
|
97 |
|
|
98 string_vector result (n_elts); |
|
|
99 |
|
|
100 int k = 0; |
|
|
101 |
|
|
102 for (int i = 0; i < nargin; i++) |
|
|
103 { |
|
4457
|
104 string_vector s = args(i).all_strings (false, true); |
|
4358
|
105 |
|
|
106 int n = s.length (); |
|
|
107 |
|
|
108 for (int j = 0; j < n; j++) |
|
|
109 { |
|
|
110 std::string t = s[j]; |
|
|
111 int t_len = t.length (); |
|
|
112 |
|
|
113 if (max_len > t_len) |
|
|
114 t += std::string (max_len - t_len, ' '); |
|
|
115 |
|
|
116 result[k++] = t; |
|
|
117 } |
|
|
118 } |
|
|
119 |
|
5280
|
120 retval = octave_value (result, '\''); |
|
4358
|
121 } |
|
|
122 else |
|
|
123 print_usage ("char"); |
|
|
124 |
|
|
125 return retval; |
|
|
126 } |
|
|
127 |
|
4535
|
128 DEFUN (ischar, args, , |
|
3361
|
129 "-*- texinfo -*-\n\ |
|
4535
|
130 @deftypefn {Built-in Function} {} ischar (@var{a})\n\ |
|
3361
|
131 Return 1 if @var{a} is a string. Otherwise, return 0.\n\ |
|
|
132 @end deftypefn") |
|
807
|
133 { |
|
4233
|
134 octave_value retval; |
|
807
|
135 |
|
|
136 int nargin = args.length (); |
|
|
137 |
|
|
138 if (nargin == 1 && args(0).is_defined ()) |
|
4233
|
139 retval = args(0).is_string (); |
|
807
|
140 else |
|
4535
|
141 print_usage ("ischar"); |
|
807
|
142 |
|
|
143 return retval; |
|
|
144 } |
|
|
145 |
|
|
146 /* |
|
|
147 ;;; Local Variables: *** |
|
|
148 ;;; mode: C++ *** |
|
|
149 ;;; End: *** |
|
|
150 */ |
