Mercurial > hg > octave-lyh

annotate scripts/io/textscan.m @ 14383:07c55bceca23 stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix guarded_eval() subfunction in fminunc (bug #35534). * fminunc.m: Fix guarded_eval() subfunction in fminunc (bug #35534).
author Olaf Till <olaf.till@uni-jena.de>
date Wed, 15 Feb 2012 14:44:37 +0100
parents 72c96de7a403
children a022c04f68cc 878623ca15e1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 13141
diff changeset
1 ## Copyright (C) 2010-2012 Ben Abbott <bpabbott@mac.com>
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
2 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
3 ## This file is part of Octave.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
4 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
6 ## under the terms of the GNU General Public License as published by
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
8 ## your option) any later version.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
9 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
13 ## General Public License for more details.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
14 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
15 ## You should have received a copy of the GNU General Public License
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
17 ## <http://www.gnu.org/licenses/>.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
18
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
19 ## -*- texinfo -*-
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11469
diff changeset
20 ## @deftypefn {Function File} {@var{C} =} textscan (@var{fid}, @var{format})
12575
d0b799dafede Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents: 11589
diff changeset
21 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{n})
d0b799dafede Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents: 11589
diff changeset
22 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{param}, @var{value}, @dots{})
d0b799dafede Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents: 11589
diff changeset
23 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{fid}, @var{format}, @var{n}, @var{param}, @var{value}, @dots{})
11471
994e2a93a8e2 Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents: 11469
diff changeset
24 ## @deftypefnx {Function File} {@var{C} =} textscan (@var{str}, @dots{})
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
25 ## @deftypefnx {Function File} {[@var{C}, @var{position}] =} textscan (@var{fid}, @dots{})
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
26 ## Read data from a text file or string.
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
27 ##
11563
3c6e8aaa9555 Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
28 ## The file associated with @var{fid} is read and parsed according to
3c6e8aaa9555 Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
29 ## @var{format}. The function behaves like @code{strread} except it works by
3c6e8aaa9555 Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
30 ## parsing a file instead of a string. See the documentation of
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
31 ## @code{strread} for details.
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
32 ##
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
33 ## In addition to the options supported by
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
34 ## @code{strread}, this function supports a few more:
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
35 ##
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
36 ## @itemize
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
37 ## @item "collectoutput":
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
38 ## A value of 1 or true instructs textscan to concatenate consecutive columns
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
39 ## of the same class in the output cell array. A value of 0 or false (default)
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
40 ## leaves output in distinct columns.
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
41 ##
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
42 ## @item "endofline":
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
43 ## Specify "\r", "\n" or "\r\n" (for CR, LF, or CRLF). If no value is given,
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
44 ## it will be inferred from the file. If set to "" (empty string) EOLs are
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
45 ## ignored as delimiters and added to whitespace.
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
46 ##
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
47 ## @item "headerlines":
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
48 ## The first @var{value} number of lines of @var{fid} are skipped.
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
49 ##
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
50 ## @item "returnonerror":
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
51 ## If set to numerical 1 or true (default), return normally when read errors
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
52 ## have been encountered. If set to 0 or false, return an error and no data.
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
53 ## @end itemize
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
54 ##
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
55 ## The optional input @var{n} specifes the number of times to use
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
56 ## @var{format} when parsing, i.e., the format repeat count.
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
57 ##
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
58 ## The output @var{C} is a cell array whose length is given by the number
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
59 ## of format specifiers.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
60 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
61 ## The second output, @var{position}, provides the position, in characters,
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
62 ## from the beginning of the file.
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
63 ##
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
64 ## @seealso{dlmread, fscanf, load, strread, textread}
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
65 ## @end deftypefn
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
66
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
67 function [C, position] = textscan (fid, format = "%f", varargin)
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
68
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
69 ## Check input
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
70 if (nargin < 1)
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
71 print_usage ();
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
72 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
73
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
74 if (isempty (format))
11469
c776f063fefe Overhaul m-script files to use common variable name between code and documentation.
Rik <octave@nomad.inbox5.com>
parents: 11191
diff changeset
75 format = "%f";
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
76 endif
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
77
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
78 if (! (isa (fid, "double") && fid > 0) && ! ischar (fid))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
79 error ("textscan: first argument must be a file id or character string");
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
80 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
81
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
82 if (! ischar (format))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
83 error ("textscan: FORMAT must be a string");
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
84 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
85
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
86 args = varargin;
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
87 if (nargin > 2 && isnumeric (args{1}))
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
88 nlines = args{1};
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
89 else
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
90 nlines = Inf;
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
91 endif
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
92
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
93 if (! any (strcmpi (args, "emptyvalue")))
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
94 ## Matlab returns NaNs for missing values
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
95 args(end+1:end+2) = {'emptyvalue', NaN};
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
96 endif
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
97
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
98 ## Check default parameter values that differ for strread & textread
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
99
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
100 ipos = find (strcmpi (args, "whitespace"));
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
101 if (isempty (ipos))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
102 ## Matlab default whitespace = " \b\t"
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
103 args(end+1:end+2) = {'whitespace', " \b\t"};
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
104 whitespace = " \b\t";
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
105 else
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
106 ## Check if there's at least one string format specifier
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
107 fmt = strrep (format, "%", " %");
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
108 fmt = regexp (fmt, '[^ ]+', 'match');
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
109 fmt = strtrim (fmt(strmatch ("%", fmt)))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
110 has_str_fmt = all (cellfun ("isempty", strfind (strtrim (fmt(strmatch ("%", fmt))), 's')));
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
111 ## If there is a format, AND whitespace value = empty,
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
112 ## don't add a space (char(32)) to whitespace
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
113 if (! (isempty (args{ipos+1}) && has_str_fmt))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
114 args{ipos+1} = unique ([" ", whitespace]);
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
115 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
116 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
117
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
118 if (! any (strcmpi (args, "delimiter")))
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
119 ## Matlab says default delimiter = whitespace.
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
120 ## strread() will pick this up further
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
121 args(end+1:end+2) = {'delimiter', ""};
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
122 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
123
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
124 collop = false;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
125 ipos = find (strcmpi (args, "collectoutput"));
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
126 if (! isempty (ipos))
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
127 ## 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
128 if (isscalar (args{ipos+1})
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
129 && (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
130 collop = args{ipos+1};
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
131 else
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
132 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
133 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
134 ## 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
135 args(ipos:ipos+1) = [];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
136 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
137
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
138 if (any (strcmpi (args, "returnonerror")))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
139 ## 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
140 ## can't be neatly implemented. strread() will pick it up anyway
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
141 warning ('textscan: ReturnOnError is not fully implemented');
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
142 else
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
143 ## Set default value (=true)
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
144 args(end+1:end+2) = {"returnonerror", 1};
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
145 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
146
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
147 if (ischar (fid))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
148 ## Read from a text string
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
149 if (nargout == 2)
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
150 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
151 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
152 str = fid;
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
153 else
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
154 ## Skip header lines if requested
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
155 headerlines = find (strcmpi (args, "headerlines"), 1);
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
156 ## Beware of zero valued headerline, fskipl would skip to EOF
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
157 if (! isempty (headerlines) && (args{headerlines + 1} > 0))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
158 fskipl (fid, varargin{headerlines + 1});
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
159 args(headerlines:headerlines+1) = [];
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
160 endif
12880
ff264eae88cf textread.m, textscan.m: Read entire file when format repeat count is -1
Rik <octave@nomad.inbox5.com>
parents: 12877
diff changeset
161 if (isfinite (nlines) && (nlines >= 0))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
162 str = tmp_str = "";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
163 n = 0;
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
164 ## FIXME: Can this be done without slow loop?
12916
5d0478a75618 textscan: Fix multiple accesses, bug #33876.
Ben Abbott <bpabbott@mac.com>
parents: 12914
diff changeset
165 while (ischar (tmp_str) && n++ < nlines)
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
166 tmp_str = fgets (fid);
12916
5d0478a75618 textscan: Fix multiple accesses, bug #33876.
Ben Abbott <bpabbott@mac.com>
parents: 12914
diff changeset
167 if (ischar (tmp_str))
5d0478a75618 textscan: Fix multiple accesses, bug #33876.
Ben Abbott <bpabbott@mac.com>
parents: 12914
diff changeset
168 str = strcat (str, tmp_str);
5d0478a75618 textscan: Fix multiple accesses, bug #33876.
Ben Abbott <bpabbott@mac.com>
parents: 12914
diff changeset
169 endif
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
170 endwhile
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
171 else
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
172 str = fread (fid, "char=>char").';
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
173 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
174 endif
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
175
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
176 ## Check for empty result
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
177 if (isempty (str))
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
178 warning ("textscan: no data read");
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
179 C = [];
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
180 return;
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
181 endif
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
182
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
183 ## 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
184 endofline = find (strcmpi (args, "endofline"), 1);
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
185 if (! isempty (endofline))
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
186 if (ischar (args{endofline + 1}))
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
187 eol_char = args{endofline + 1};
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
188 if (isempty (strmatch (eol_char, {"", "\n", "\r", "\r\n"}, 'exact')))
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
189 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
190 endif
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
191 else
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
192 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
193 endif
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
194 else
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
195 ## Determine EOL from file. Search for EOL candidates in first 3000 chars
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
196 eol_srch_len = min (length (str), 3000);
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
197 ## First try DOS (CRLF)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
198 if (! isempty (findstr ("\r\n", str(1 : eol_srch_len))))
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
199 eol_char = "\r\n";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
200 ## Perhaps old Macintosh? (CR)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
201 elseif (! isempty (findstr ("\r", str(1 : eol_srch_len))))
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
202 eol_char = "\r";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
203 ## Otherwise, use plain UNIX (LF)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
204 else
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
205 eol_char = "\n";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
206 endif
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
207 ## Set up the default endofline param value
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
208 args(end+1:end+2) = {'endofline', eol_char};
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
209 endif
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
210
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
211 ## Determine the number of data fields
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
212 num_fields = numel (strfind (format, "%")) - numel (strfind (format, "%*"));
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
213
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
214 ## Strip trailing EOL to avoid returning stray missing values (f. strread)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
215 if (strcmp (str(end-length (eol_char) + 1 : end), eol_char));
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
216 str(end-length (eol_char) + 1 : end) = "";
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
217 endif
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
218
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
219 ## Call strread to make it do the real work
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
220 C = cell (1, num_fields);
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
221 [C{:}] = strread (str, format, args{:});
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12916
diff changeset
222
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
223 ## If requested, collect output columns of same class
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
224 if (collop)
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
225 C = colloutp (C);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
226 endif
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
227
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
228 if (nargout == 2)
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
229 position = ftell (fid);
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
230 endif
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
231
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
232 endfunction
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
233
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
234
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
235 ## Collect consecutive columns of same class into one cell column
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
236 function C = colloutp (C)
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
237
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
238 ## Start at rightmost column and work backwards to avoid ptr mixup
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
239 ii = numel (C);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
240 while ii > 1
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
241 clss1 = class (C{ii});
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
242 jj = ii;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
243 while (jj > 1 && strcmp (clss1, class (C{jj - 1})))
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
244 ## Column to the left is still same class; check next column to the left
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
245 --jj;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
246 endwhile
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
247 if (jj < ii)
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
248 ## Concatenate columns into current column
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
249 C{jj} = [C{jj : ii}];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
250 ## 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
251 C(jj+1 : ii) = [];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
252 ii = jj - 1;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
253 else
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
254 ## No similar class in column to the left, search from there
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
255 --ii;
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
256 endif
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
257 endwhile
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
258
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
259 endfunction
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
260
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
261 %!test
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
262 %! str = "1, 2, 3, 4\n 5, , , 8\n 9, 10, 11, 12";
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
263 %! fmtstr = "%f %d %f %s";
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
264 %! c = textscan (str, fmtstr, 2, "delimiter", ",", "emptyvalue", -Inf);
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
265 %! assert (isequal (c{1}, [1;5]));
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
266 %! assert (length (c{1}), 2);
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
267 %! assert (iscellstr (c{4}));
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
268 %! assert (isequal (c{3}, [3; -Inf]));
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
269
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
270 %!test
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
271 %! b = [10:10:100];
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
272 %! b = [b; 8*b/5];
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
273 %! str = sprintf ("%g miles/hr = %g kilometers/hr\n", b);
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
274 %! fmt = "%f miles/hr = %f kilometers/hr";
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
275 %! c = textscan (str, fmt);
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
276 %! assert (b(1,:)', c{1}, 1e-5);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
277 %! assert (b(2,:)', c{2}, 1e-5);
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
278
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
279 #%!test
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
280 #%! str = "13, 72, NA, str1, 25\r\n// Middle line\r\n36, na, 05, str3, 6";
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
281 #%! a = textscan(str, '%d %n %f %s %n', 'delimiter', ',','treatAsEmpty', {'NA', 'na'},'commentStyle', '//');
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
282 #%! assert (a{1}, int32([13; 36]));
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
283 #%! assert (a{2}, [72; NaN]);
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
284 #%! assert (a{3}, [NaN; 5]);
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
285 #%! assert (a{4}, {"str1"; "str3"});
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
286 #%! assert (a{5}, [25; 6]);
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
287
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
288 %!test
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
289 %! str = "Km:10 = hhhBjjj miles16hour\r\n";
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
290 %! str = [str "Km:15 = hhhJjjj miles241hour\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
291 %! str = [str "Km:2 = hhhRjjj miles3hour\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
292 %! str = [str "Km:25 = hhhZ\r\n"];
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
293 %! fmt = "Km:%d = hhh%1sjjj miles%dhour";
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
294 %! a = textscan (str, fmt, 'delimiter', ' ');
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
295 %! assert (a{1}', int32([10 15 2 25]));
12866
fe6e2afcd9ee Revamp strread, textscan, textread functions for Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12679
diff changeset
296 %! assert (a{2}', {'B' 'J' 'R' 'Z'});
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
297 %! assert (a{3}', int32([16 241 3 0]));
11141
224c80da37c5 textscan.m: Add new function.
Ben Abbott <bpabbott@mac.com>
parents:
diff changeset
298
12891
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
299 %% Test with default endofline parameter
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
300 %!test
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
301 %! c = textscan ("L1\nL2", "%s");
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
302 %! assert (c{:}, {"L1"; "L2"});
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
303
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
304 %% Test with endofline parameter set to '' (empty) - newline should be in word
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
305 %!test
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
306 %! c = textscan ("L1\nL2", "%s", 'endofline', '');
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
307 %! assert (int8(c{:}{:}), int8([ 76, 49, 10, 76, 50 ]));
f5a3f77d51aa strread.m, textscan.m: More Matlab compatability
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12880
diff changeset
308
12914
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
309 %!test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
310 %! # 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
311 %! str = "Text1Text2Text\nTextText4Text\nText57Text";
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
312 %! c = textscan (str, "Text%*dText%dText");
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
313 %! 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
314
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
315 %!test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
316 %% CollectOutput test
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
317 %! b = [10:10:100];
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
318 %! 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
319 %! 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
320 %! fmt = "%f miles%s %s %f (%f) kilometers %*s";
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
321 %! c = textscan (str, fmt, 'collectoutput', 1);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
322 %! assert (size(c{3}), [10, 2]);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
323 %! assert (size(c{2}), [10, 2]);
ac00ae83ea2e More compatibility improvements for textscan and strread
Philip Nienhuis <prnienhuis@users.sf.net>
parents: 12891
diff changeset
324
12877
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
325 %% Test input validation
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
326 %!error textscan ()
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
327 %!error textscan (single (4))
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
328 %!error textscan ({4})
ddea3962b024 Various improvements to strread, textread, textscan functions
Rik <octave@nomad.inbox5.com>
parents: 12873
diff changeset
329 %!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
330 %!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
331 %!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
332