Mercurial > hg > octave-jordi
changeset 10021:bf26f81d009f
implement compiled strfind
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Fri, 25 Dec 2009 15:55:36 +0100 |
| parents | ffee051323f8 |
| children | a14dc255427f |
| files | scripts/ChangeLog scripts/strings/module.mk scripts/strings/strfind.m src/ChangeLog src/DLD-FUNCTIONS/module-files |
| diffstat | 5 files changed, 11 insertions(+), 95 deletions(-) [+] |
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--- a/scripts/ChangeLog +++ b/scripts/ChangeLog @@ -1,3 +1,8 @@ +2009-12-25 Jaroslav Hajek <highegg@gmail.com> + + * strings/strfind.m: Remove. + * strings/module.mk: Update. + 2009-12-24 Jaroslav Hajek <highegg@gmail.com> * strings/strjust.m: Rewrite.
--- a/scripts/strings/module.mk +++ b/scripts/strings/module.mk @@ -23,7 +23,6 @@ strings/cstrcat.m \ strings/strcmpi.m \ strings/strchr.m \ - strings/strfind.m \ strings/strjust.m \ strings/strmatch.m \ strings/strncmpi.m \
deleted file mode 100644 --- a/scripts/strings/strfind.m +++ /dev/null @@ -1,94 +0,0 @@ -## Copyright (C) 2004, 2006, 2007, 2009 by Alois Schloegl -## -## This file is part of Octave. -## -## Octave is free software; you can redistribute it and/or modify it -## under the terms of the GNU General Public License as published by -## the Free Software Foundation; either version 3 of the License, or (at -## your option) any later version. -## -## Octave is distributed in the hope that it will be useful, but -## WITHOUT ANY WARRANTY; without even the implied warranty of -## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -## General Public License for more details. -## -## You should have received a copy of the GNU General Public License -## along with Octave; see the file COPYING. If not, see -## <http://www.gnu.org/licenses/>. - -## -*- texinfo -*- -## @deftypefn {Function File} {@var{idx} =} strfind (@var{str}, @var{pattern}) -## @deftypefnx {Function File} {@var{idx} =} strfind (@var{cellstr}, @var{pattern}) -## Search for @var{pattern} in the string @var{str} and return the -## starting index of every such occurrence in the vector @var{idx}. -## If there is no such occurrence, or if @var{pattern} is longer -## than @var{str}, then @var{idx} is the empty array @code{[]}. -## -## If the cell array of strings @var{cellstr} is specified instead of the -## string @var{str}, then @var{idx} is a cell array of vectors, as specified -## above. Examples: -## -## @example -## @group -## strfind ("abababa", "aba") -## @result{} [1, 3, 5] -## -## strfind (@{"abababa", "bebebe", "ab"@}, "aba") -## @result{} ans = -## @{ -## [1,1] = -## -## 1 3 5 -## -## [1,2] = [](1x0) -## [1,3] = [](1x0) -## @} -## @end group -## @end example -## @seealso{findstr, strmatch, strcmp, strncmp, strcmpi, strncmpi, find} -## @end deftypefn - -## Author: alois schloegl <a.schloegl@ieee.org> -## Created: 1 November 2004 -## Adapted-By: William Poetra Yoga Hadisoeseno <williampoetra@gmail.com> - -function idx = strfind (text, pattern) - - if (nargin != 2) - print_usage (); - elseif (! ischar (pattern)) - error ("strfind: pattern must be a string value"); - endif - - lp = length (pattern); - - if (ischar (text)) - idx = __strfind_string__ (text, pattern, lp); - elseif (iscellstr (text)) - idx = cell (size (text)); - for i = 1:(numel (text)) - idx{i} = __strfind_string__ (text{i}, pattern, lp); - endfor - else - error ("strfind: text must be a string or cell array of strings"); - endif - -### endfunction - -function idx = __strfind_string__ (text, pattern, lp) - - idx = 1:(length (text) - lp + 1); - k = 0; - while (k < lp && ! isempty (idx)) - idx = idx(text(idx + k) == pattern(++k)); - endwhile - -### endfunction - -%!error <Invalid call to strfind> strfind (); -%!error <Invalid call to strfind> strfind ("foo", "bar", 1); -%!error <pattern must be a string value> strfind ("foo", 100); -%!error <text must be a string or cell array of string> strfind (100, "foo"); - -%!assert (strfind ("abababa", "aba"), [1, 3, 5]); -%!assert (strfind ({"abababa", "bla", "bla"}, "a"), {[1, 3, 5, 7], 3, 3});