annotate scripts/io/textscan.m @ 16060:f837bdd535f7

textscan.m: catch wrong headerlines values, tests added
author Philip Nienhuis <prnienhuis@users.sf.net>
date Thu, 14 Feb 2013 21:11:46 +0100
parents 1733bd181cb6
children 23636765e00a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ## Copyright (C) 2010-2013 Ben Abbott <bpabbott@mac.com>
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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 3 of the License, or (at
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8 ## your option) 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, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {@var{C} =} textscan (@var{fid}, @var{format})
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21 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{n})
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22 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{param}, @var{value}, @dots{})
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23 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{n}, @var{param}, @var{value}, @dots{})
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24 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{str}, @dots{})
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25 ## @deftypefnx {Function File} {[@var{C}, @var{position}] =} textscan (@var{fid}, @dots{})
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26 ## Read data from a text file or string.
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27 ##
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28 ## The string @var{str} or file associated with @var{fid} is read from and
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29 ## parsed according to @var{format}. The function behaves like @code{strread}
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30 ## except it can also read from file instead of a string. See the documentation
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31 ## of @code{strread} for details.
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32 ##
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33 ## In addition to the options supported by @code{strread}, this function
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34 ## supports a few more:
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35 ##
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36 ## @itemize
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37 ## @item "collectoutput":
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38 ## A value of 1 or true instructs textscan to concatenate consecutive columns
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39 ## of the same class in the output cell array. A value of 0 or false (default)
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40 ## leaves output in distinct columns.
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41 ##
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42 ## @item "endofline":
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43 ## Specify "\r", "\n" or "\r\n" (for CR, LF, or CRLF). If no value is given,
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44 ## it will be inferred from the file. If set to "" (empty string) EOLs are
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45 ## ignored as delimiters and added to whitespace.
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46 ##
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47 ## @item "headerlines":
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48 ## The first @var{value} number of lines of @var{fid} are skipped.
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49 ##
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50 ## @item "returnonerror":
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51 ## If set to numerical 1 or true (default), return normally when read errors
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52 ## have been encountered. If set to 0 or false, return an error and no data.
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53 ## As the string or file is read by columns rather than by rows, and because
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54 ## textscan is fairly forgiving as regards read errors, setting this option
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55 ## may have little or no actual effect.
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56 ## @end itemize
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57 ##
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58 ## When reading from a character string, optional input argument @var{n}
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59 ## specifies the number of times @var{format} should be used (i.e., to limit
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60 ## the amount of data read).
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61 ## When reading from file, @var{n} specifies the number of data lines to read;
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62 ## in this sense it differs slightly from the format repeat count in strread.
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63 ##
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64 ## The output @var{C} is a cell array whose second dimension is determined
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65 ## by the number of format specifiers.
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66 ##
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67 ## The second output, @var{position}, provides the position, in characters,
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68 ## from the beginning of the file.
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69 ##
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70 ## @seealso{dlmread, fscanf, load, strread, textread}
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71 ## @end deftypefn
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72
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73 function [C, position] = textscan (fid, format = "%f", varargin)
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74
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75 BUFLENGTH = 4096; ## Read buffer
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76
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77 ## Check input
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78 if (nargin < 1)
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79 print_usage ();
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80 endif
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81
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82 if (isempty (format))
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83 format = "%f";
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84 endif
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85
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86 if (! ischar (format))
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87 error ("textscan: FORMAT must be a string");
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88 endif
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89
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90 ## Determine the number of data fields & initialize output array
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91 num_fields = numel (strfind (format, "%")) - numel (strfind (format, "%*"));
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92 C = cell (1, num_fields);
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93
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94 if (! (isa (fid, "double") && fid > 0) && ! ischar (fid))
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95 error ("textscan: first argument must be a file id or character string");
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96 endif
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97
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98 args = varargin;
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99 if (nargin > 2 && isnumeric (args{1}))
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100 nlines = args{1};
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101 else
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102 nlines = Inf;
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103 endif
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104 if (nlines < 1)
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105 printf ("textscan: N = 0, no data read\n");
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106 return
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107 endif
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108
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109 if (! any (strcmpi (args, "emptyvalue")))
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110 ## Matlab returns NaNs for missing values
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111 args(end+1:end+2) = {'emptyvalue', NaN};
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112 endif
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113
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114 ## Check default parameter values that differ for strread & textread
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115
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116 ipos = find (strcmpi (args, "whitespace"));
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117 if (isempty (ipos))
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118 ## Matlab default whitespace = " \b\t"
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119 args(end+1:end+2) = {'whitespace', " \b\t"};
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120 whitespace = " \b\t";
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121 else
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122 ## Check if there's at least one string format specifier
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123 has_str_fmt = regexp (format, '%[*]?\d*s', "once");
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124 ## If there is a string format AND whitespace value = empty,
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parents: 12679
diff changeset
125 ## don't add a space (char(32)) to whitespace
14213
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Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
126 if (! (isempty (args{ipos+1}) && has_str_fmt))
15871
878623ca15e1 textscan.m: fix treatment of whitespace argument (bug #37961)
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 14138
diff changeset
127 args{ipos+1} = unique ([" ", args{ipos+1}]);
12866
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diff changeset
128 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
129 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
130
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
131 if (! any (strcmpi (args, "delimiter")))
13141
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John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
132 ## Matlab says default delimiter = whitespace.
12866
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Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
133 ## strread() will pick this up further
12877
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parents: 12873
diff changeset
134 args(end+1:end+2) = {'delimiter', ""};
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
135 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
136
12914
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Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
137 collop = false;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
138 ipos = find (strcmpi (args, "collectoutput"));
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
139 if (! isempty (ipos))
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
140 ## Search & concatenate consecutive columns of same class requested
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
141 if (isscalar (args{ipos+1})
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
142 && (islogical (args{ipos+1}) || isnumeric (args{ipos+1})))
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
143 collop = args{ipos+1};
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
144 else
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
145 warning ("textscan: illegal value for CollectOutput parameter - ignored");
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
146 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
147 ## Remove argument before call to strread() below
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
148 args(ipos:ipos+1) = [];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
149 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
150
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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parents: 12679
diff changeset
151 if (any (strcmpi (args, "returnonerror")))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
152 ## Because of the way strread() reads data (columnwise) this parameter
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
153 ## can't be neatly implemented. strread() will pick it up anyway
12877
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parents: 12873
diff changeset
154 warning ('textscan: ReturnOnError is not fully implemented');
12866
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Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
155 else
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
156 ## Set default value (=true)
12877
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parents: 12873
diff changeset
157 args(end+1:end+2) = {"returnonerror", 1};
12866
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Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
158 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
159
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
160 if (ischar (fid))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
161 ## Read from a text string
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
162 if (nargout == 2)
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
163 error ("textscan: cannot provide position information for character input");
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
164 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
165 str = fid;
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
166 else
14565
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Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
167 st_pos = ftell (fid);
12866
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Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
168 ## Skip header lines if requested
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
169 headerlines = find (strcmpi (args, "headerlines"), 1);
16060
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
170 if (! isempty (headerlines))
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
171 ## Beware of missing or wrong headerline value
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
172 if (headerlines == numel (args)
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
173 || ! isnumeric (args{headerlines + 1}))
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
174 error ("Missing or illegal value for 'headerlines'" );
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
175 endif
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
176 ## Avoid conveying floats to fskipl
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
177 args{headerlines + 1} = round (args{headerlines + 1});
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
178 if (args{headerlines + 1} > 0)
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
179 ## Beware of zero valued headerline, fskipl would skip to EOF
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
180 fskipl (fid, args{headerlines + 1});
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
181 args(headerlines:headerlines+1) = [];
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
182 st_pos = ftell (fid);
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
183 elseif (args{headerlines + 1} < 0)
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
184 warning ("textscan.m: negative headerline value ignored");
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
185 endif
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
186 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
187 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
188
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
189 ## Check for empty result
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
190 if (isempty (str))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
191 warning ("textscan: no data read");
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
192 return;
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
193 endif
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
194
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
195 ## Check value of 'endofline'. String or file doesn't seem to matter
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
196 endofline = find (strcmpi (args, "endofline"), 1);
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
197 if (! isempty (endofline))
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
198 if (ischar (args{endofline + 1}))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
199 eol_char = args{endofline + 1};
14213
a022c04f68cc Replace to-be-deprecated strmatch occurrences with alternate code.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
200 if (! any (strcmp (eol_char, {"", "\n", "\r", "\r\n"})))
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
201 error ("textscan: illegal EndOfLine character value specified");
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
202 endif
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
203 else
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
204 error ("textscan: character value required for EndOfLine");
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
205 endif
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
206 else
15868
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
207 if (! ischar (fid))
14565
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
208 ## Determine EOL from file. Search for EOL candidates in first BUFLENGTH chars
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
209 eol_srch_len = min (length (str), BUFLENGTH);
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
210 ## First try DOS (CRLF)
14214
2fe0f5fa8cc3 Replace to-be-deprecated findstr occurrences with strfind.
Rik <octave@nomad.inbox5.com>
parents: 14213
diff changeset
211 if (! isempty (strfind ("\r\n", str(1 : eol_srch_len))))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
212 eol_char = "\r\n";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
213 ## Perhaps old Macintosh? (CR)
14214
2fe0f5fa8cc3 Replace to-be-deprecated findstr occurrences with strfind.
Rik <octave@nomad.inbox5.com>
parents: 14213
diff changeset
214 elseif (! isempty (strfind ("\r", str(1 : eol_srch_len))))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
215 eol_char = "\r";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
216 ## Otherwise, use plain UNIX (LF)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
217 else
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
218 eol_char = "\n";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
219 endif
15868
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
220 else
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
221 eol_char = "\n";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
222 endif
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
223 ## Set up the default endofline param value
14565
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
224 args(end+1:end+2) = {"endofline", eol_char};
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
225 endif
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
226
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
227 if (!ischar (fid))
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
228 ## Now that we know what EOL looks like, we can process format_repeat_count.
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
229 ## FIXME The below isn't ML-compatible: counts lines, not format string uses
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
230 if (isfinite (nlines) && (nlines >= 0))
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
231 l_eol_char = length (eol_char);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
232 eoi = findstr (str, eol_char);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
233 n_eoi = length (eoi);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
234 nblks = 0;
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
235 ## Avoid slow repeated str concatenation, first seek requested end of data
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
236 while (n_eoi < nlines && count == BUFLENGTH)
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
237 [nstr, count] = fscanf (fid, "%c", BUFLENGTH);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
238 if (count > 0)
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
239 ## Watch out for multichar EOL being missed across buffer boundaries
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
240 if (l_eol_char > 1)
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
241 str = [str(end - length (eol_char) + 2 : end) nstr];
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
242 else
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
243 str = nstr;
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244 endif
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Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
245 eoi = findstr (str, eol_char);
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Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
246 n_eoi += numel (eoi);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
247 ++nblks;
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
248 endif
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
249 endwhile
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
250 ## OK, found EOL delimiting last requested line. Compute ptr (incl. EOL)
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
251 if (isempty (eoi))
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
252 printf ("textscan: format repeat count specified but no endofline found\n");
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Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
253 data_size = nblks * BUFLENGTH + count;
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
254 else
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
255 ## Compute data size to read incl complete EOL
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
256 data_size = (nblks * BUFLENGTH) + eoi(end + min (nlines, n_eoi) - n_eoi) \
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
257 + l_eol_char - 1;
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
258 endif
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
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diff changeset
259 fseek (fid, st_pos, "bof");
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diff changeset
260 str = fscanf (fid, "%c", data_size);
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
261 else
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
262 fseek (fid, st_pos, "bof");
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
263 str = fread (fid, "char=>char").';
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
Philip Nienhuis <prnienhuis@@users.sf.net>
parents: 14552
diff changeset
264 endif
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diff changeset
265 endif
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diff changeset
266
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diff changeset
267 ## Determine the number of data fields
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diff changeset
268 num_fields = numel (strfind (format, "%")) - numel (strfind (format, "%*"));
11141
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269
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270 ## Strip trailing EOL to avoid returning stray missing values (f. strread).
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271 ## However, in case of CollectOutput request, presence of EOL is required
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diff changeset
272 eol_at_end = strcmp (str(end-length (eol_char) + 1 : end), eol_char);
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diff changeset
273 if (collop)
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diff changeset
274 if (! eol_at_end)
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diff changeset
275 str(end+1 : end+length (eol_char)) = eol_char;
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diff changeset
276 endif
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diff changeset
277 elseif (eol_at_end)
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diff changeset
278 str(end-length (eol_char) + 1 : end) = "";
14800
a922f768ee09 textscan, strread: improved ML compatibility (bug 36398)
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diff changeset
279 ## A corner case: str may now be empty....
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diff changeset
280 if (isempty (str)); return; endif
a922f768ee09 textscan, strread: improved ML compatibility (bug 36398)
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diff changeset
281 endif
11141
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282
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diff changeset
283 ## Call strread to make it do the real work
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diff changeset
284 C = cell (1, num_fields);
ddea3962b024 Various improvements to strread, textread, textscan functions
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diff changeset
285 [C{:}] = strread (str, format, args{:});
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
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parents: 12916
diff changeset
286
12914
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diff changeset
287 ## If requested, collect output columns of same class
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diff changeset
288 if (collop)
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diff changeset
289 C = colloutp (C);
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diff changeset
290 endif
11141
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291
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diff changeset
292 if (nargout == 2)
14565
98aaebc56d7c 2012-03-25 Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
293 ## Remember file position (persistent var)
12877
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diff changeset
294 position = ftell (fid);
11141
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295 endif
224c80da37c5 textscan.m: Add new function.
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diff changeset
296
224c80da37c5 textscan.m: Add new function.
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diff changeset
297 endfunction
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diff changeset
298
12866
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diff changeset
299
12914
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diff changeset
300 ## Collect consecutive columns of same class into one cell column
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diff changeset
301 function C = colloutp (C)
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diff changeset
302
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diff changeset
303 ## Start at rightmost column and work backwards to avoid ptr mixup
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diff changeset
304 ii = numel (C);
14552
86854d032a37 maint: miscellaneous style fixes for .m files
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diff changeset
305 while (ii > 1)
12914
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Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
306 clss1 = class (C{ii});
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
307 jj = ii;
14552
86854d032a37 maint: miscellaneous style fixes for .m files
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parents: 14363
diff changeset
308 while (jj > 1 && strcmp (clss1, class (C{jj - 1})))
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
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parents: 12891
diff changeset
309 ## Column to the left is still same class; check next column to the left
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diff changeset
310 --jj;
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diff changeset
311 endwhile
ac00ae83ea2e More compatibility improvements for textscan and strread
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diff changeset
312 if (jj < ii)
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
313 ## Concatenate columns into current column
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diff changeset
314 C{jj} = [C{jj : ii}];
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parents: 12891
diff changeset
315 ## Wipe concatenated columns to the right, resume search to the left
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
316 C(jj+1 : ii) = [];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
317 ii = jj - 1;
ac00ae83ea2e More compatibility improvements for textscan and strread
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diff changeset
318 else
ac00ae83ea2e More compatibility improvements for textscan and strread
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parents: 12891
diff changeset
319 ## No similar class in column to the left, search from there
ac00ae83ea2e More compatibility improvements for textscan and strread
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parents: 12891
diff changeset
320 --ii;
ac00ae83ea2e More compatibility improvements for textscan and strread
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parents: 12891
diff changeset
321 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
322 endwhile
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
323
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
324 endfunction
ac00ae83ea2e More compatibility improvements for textscan and strread
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parents: 12891
diff changeset
325
14363
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diff changeset
326
11141
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diff changeset
327 %!test
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parents:
diff changeset
328 %! str = "1, 2, 3, 4\n 5, , , 8\n 9, 10, 11, 12";
224c80da37c5 textscan.m: Add new function.
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parents:
diff changeset
329 %! fmtstr = "%f %d %f %s";
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parents:
diff changeset
330 %! c = textscan (str, fmtstr, 2, "delimiter", ",", "emptyvalue", -Inf);
12866
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diff changeset
331 %! assert (isequal (c{1}, [1;5]));
11141
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parents:
diff changeset
332 %! assert (length (c{1}), 2);
12866
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diff changeset
333 %! assert (iscellstr (c{4}));
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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parents: 12679
diff changeset
334 %! assert (isequal (c{3}, [3; -Inf]));
11141
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parents:
diff changeset
335
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
336 %!test
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
337 %! b = [10:10:100];
224c80da37c5 textscan.m: Add new function.
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parents:
diff changeset
338 %! b = [b; 8*b/5];
224c80da37c5 textscan.m: Add new function.
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parents:
diff changeset
339 %! str = sprintf ("%g miles/hr = %g kilometers/hr\n", b);
224c80da37c5 textscan.m: Add new function.
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parents:
diff changeset
340 %! fmt = "%f miles/hr = %f kilometers/hr";
224c80da37c5 textscan.m: Add new function.
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parents:
diff changeset
341 %! c = textscan (str, fmt);
12914
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diff changeset
342 %! assert (b(1,:)', c{1}, 1e-5);
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parents: 12891
diff changeset
343 %! assert (b(2,:)', c{2}, 1e-5);
12866
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diff changeset
344
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diff changeset
345 %!test
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
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diff changeset
346 %! str = "13, 72, NA, str1, 25\r\n// Middle line\r\n36, na, 05, str3, 6";
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
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diff changeset
347 %! a = textscan (str, "%d %n %f %s %n", "delimiter", ",","treatAsEmpty", {"NA", "na"},"commentStyle", "//");
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
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parents: 14853
diff changeset
348 %! assert (a{1}, int32 ([13; 36]));
14799
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
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diff changeset
349 %! assert (a{2}, [72; NaN]);
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diff changeset
350 %! assert (a{3}, [NaN; 5]);
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diff changeset
351 %! assert (a{4}, {"str1"; "str3"});
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
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diff changeset
352 %! assert (a{5}, [25; 6]);
11141
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parents:
diff changeset
353
12866
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diff changeset
354 %!test
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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diff changeset
355 %! str = "Km:10 = hhhBjjj miles16hour\r\n";
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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diff changeset
356 %! str = [str "Km:15 = hhhJjjj miles241hour\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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diff changeset
357 %! str = [str "Km:2 = hhhRjjj miles3hour\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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diff changeset
358 %! str = [str "Km:25 = hhhZ\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
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diff changeset
359 %! fmt = "Km:%d = hhh%1sjjj miles%dhour";
14363
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parents: 14214
diff changeset
360 %! a = textscan (str, fmt, "delimiter", " ");
14868
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parents: 14853
diff changeset
361 %! assert (a{1}', int32 ([10 15 2 25]));
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
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diff changeset
362 %! assert (a{2}', {'B' 'J' 'R' 'Z'});
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
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parents: 14853
diff changeset
363 %! assert (a{3}', int32 ([16 241 3 0]));
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
364
12891
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
365 %% Test with default endofline parameter
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
366 %!test
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
367 %! c = textscan ("L1\nL2", "%s");
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
368 %! assert (c{:}, {"L1"; "L2"});
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
369
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14214
diff changeset
370 %% Test with endofline parameter set to "" (empty) - newline should be in word
12891
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
371 %!test
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14214
diff changeset
372 %! c = textscan ("L1\nL2", "%s", "endofline", "");
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
373 %! assert (int8 (c{:}{:}), int8 ([ 76, 49, 10, 76, 50 ]));
12891
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
374
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
375 %!test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
376 %! # No delimiters at all besides EOL. Skip fields, even empty fields
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
377 %! str = "Text1Text2Text\nTextText4Text\nText57Text";
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
378 %! c = textscan (str, "Text%*dText%dText");
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
379 %! assert (c{1}, int32 ([2; 4; 0]));
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
380
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
381 %!test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
382 %% CollectOutput test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
383 %! b = [10:10:100];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
384 %! b = [b; 8*b/5; 8*b*1000/5];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
385 %! str = sprintf ("%g miles/hr = %g (%g) kilometers (meters)/hr\n", b);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
386 %! fmt = "%f miles%s %s %f (%f) kilometers %*s";
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14214
diff changeset
387 %! c = textscan (str, fmt, "collectoutput", 1);
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
388 %! assert (size (c{3}), [10, 2]);
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
389 %! assert (size (c{2}), [10, 2]);
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
390
14799
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
391 %!test
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
392 %% CollectOutput test with uneven column length files
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
393 %! b = [10:10:100];
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
394 %! b = [b; 8*b/5; 8*b*1000/5];
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
395 %! str = sprintf ("%g miles/hr = %g (%g) kilometers (meters)/hr\n", b);
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
396 %! str = [str "110 miles/hr"];
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
397 %! fmt = "%f miles%s %s %f (%f) kilometers %*s";
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
398 %! c = textscan (str, fmt, "collectoutput", 1);
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
399 %! assert (size (c{1}), [11, 1]);
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
400 %! assert (size (c{3}), [11, 2]);
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
401 %! assert (size (c{2}), [11, 2]);
14799
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
402 %! assert (c{3}(end), NaN);
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
403 %! assert (c{2}{11, 1}, "/hr");
21197c43f984 Better Matlab compatibility of textscan, bugs #36356 and #36392
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14621
diff changeset
404 %! assert (isempty (c{2}{11, 2}), true);
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
405
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
406 %% Test input validation
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
407 %!error textscan ()
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
408 %!error textscan (single (4))
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
409 %!error textscan ({4})
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
410 %!error <must be a string> textscan ("Hello World", 2)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
411 %!error <cannot provide position information> [C, pos] = textscan ("Hello World")
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
412 %!error <character value required> textscan ("Hello World", '%s', 'EndOfLine', 3)
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
413
14800
a922f768ee09 textscan, strread: improved ML compatibility (bug 36398)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14799
diff changeset
414 %! Test incomplete first data line
a922f768ee09 textscan, strread: improved ML compatibility (bug 36398)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14799
diff changeset
415 %! R = textscan (['Empty1' char(10)], 'Empty%d %f');
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
416 %! assert (R{1}, int32 (1));
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14853
diff changeset
417 %! assert (isempty (R{2}), true);
15263
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
418
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
419 %% bug #37023 (actually a strread test)
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
420 %!test
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
421 %! data = textscan(" 1. 1 \n 2 3\n", '%f %f');
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
422 %! assert (data{1}, [1; 2], 1e-15);
2136343014d5 bug #37023 (wrong reading of lines starting and/or ending with whitespace)
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 14868
diff changeset
423 %! assert (data{2}, [1; 3], 1e-15);
15868
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
424
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
425 %% Whitespace test (bug #37333) using delimiter ";"
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
426 %!test
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
427 %! tc = [];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
428 %! tc{1, 1} = "C:/code;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
429 %! tc{1, end+1} = "C:/code/meas;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
430 %! tc{1, end+1} = " C:/code/sim;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
431 %! tc{1, end+1} = "C:/code/utils;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
432 %! string = [tc{:}];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
433 %! c = textscan (string, "%s", "delimiter", ";");
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
434 %! for k = 1:numel (c{1})
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
435 %! lh = c{1}{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
436 %! rh = tc{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
437 %! rh(rh == ";") = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
438 %! rh = strtrim (rh);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
439 %! assert (strcmp (lh, rh));
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
440 %! end
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
441
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
442 %% Whitespace test (bug #37333), adding multipleDelimsAsOne true arg
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
443 %!test
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
444 %! tc = [];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
445 %! tc{1, 1} = "C:/code;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
446 %! tc{1, end+1} = " C:/code/meas;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
447 %! tc{1, end+1} = "C:/code/sim;;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
448 %! tc{1, end+1} = "C:/code/utils;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
449 %! string = [tc{:}];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
450 %! c = textscan (string, "%s", "delimiter", ";", "multipleDelimsAsOne", 1);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
451 %! for k = 1:numel (c{1})
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
452 %! lh = c{1}{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
453 %! rh = tc{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
454 %! rh(rh == ";") = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
455 %! rh = strtrim (rh);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
456 %! assert (strcmp (lh, rh));
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
457 %! end
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
458
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
459 %% Whitespace test (bug #37333), adding multipleDelimsAsOne false arg
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
460 %!test
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
461 %! tc = [];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
462 %! tc{1, 1} = "C:/code;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
463 %! tc{1, end+1} = " C:/code/meas;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
464 %! tc{1, end+1} = "C:/code/sim;;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
465 %! tc{1, end+1} = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
466 %! tc{1, end+1} = "C:/code/utils;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
467 %! string = [tc{:}];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
468 %! c = textscan (string, "%s", "delimiter", ";", "multipleDelimsAsOne", 0);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
469 %! for k = 1:numel (c{1})
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
470 %! lh = c{1}{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
471 %! rh = tc{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
472 %! rh(rh == ";") = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
473 %! rh = strtrim (rh);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
474 %! assert (strcmp (lh, rh));
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
475 %! end
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
476
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
477 %% Whitespace test (bug #37333) whitespace "" arg
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
478 %!test
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
479 %! tc = [];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
480 %! tc{1, 1} = "C:/code;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
481 %! tc{1, end+1} = " C:/code/meas;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
482 %! tc{1, end+1} = "C:/code/sim;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
483 %! tc{1, end+1} = "C:/code/utils;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
484 %! string = [tc{:}];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
485 %! c = textscan (string, "%s", "delimiter", ";", "whitespace", "");
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
486 %! for k = 1:numel (c{1})
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
487 %! lh = c{1}{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
488 %! rh = tc{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
489 %! rh(rh == ";") = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
490 %! assert (strcmp (lh, rh));
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
491 %! end
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
492
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
493 %% Whitespace test (bug #37333), whitespace " " arg
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
494 %!test
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
495 %! tc = [];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
496 %! tc{1, 1} = "C:/code;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
497 %! tc{1, end+1} = " C:/code/meas;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
498 %! tc{1, end+1} = "C:/code/sim;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
499 %! tc{1, end+1} = "C:/code/utils;";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
500 %! string = [tc{:}];
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
501 %! c = textscan (string, "%s", "delimiter", ";", "whitespace", " ");
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
502 %! for k = 1:numel (c{1})
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
503 %! lh = c{1}{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
504 %! rh = tc{k};
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
505 %! rh(rh == ";") = "";
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
506 %! rh = strtrim (rh);
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
507 %! assert (strcmp (lh, rh));
6251fa48d28b textscan.m: various whitespace & delimiter tests added
Andy Register <andy.register@gatech.edu>
parents: 15263
diff changeset
508 %! end
16060
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
509
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
510 %!error <missing or illegal value for> textread (file_in_loadpath ("textscan.m"), "", "headerlines")
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
511 %!error <missing or illegal value for> textread (file_in_loadpath ("textscan.m"), "", "headerlines", 'hh')
f837bdd535f7 textscan.m: catch wrong headerlines values, tests added
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 15872
diff changeset
512 %!error <character value required for> textread (file_in_loadpath ("textscan.m"), "", "endofline", true)