Mercurial > octave-nkf
annotate scripts/pkg/get_forge_pkg.m @ 11032:c9b0a75b02e8
Make all regexp in Octave compatible with both POSIX and PCRE.
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Tue, 28 Sep 2010 09:25:14 -0700 |
| parents | 4f46520e2103 |
| children | 2c356a35d7f5 |
| rev | line source |
|---|---|
| 10684 | 1 ## Copyright (C) 2010 VZLU Prague, a.s. |
| 2 ## | |
| 3 ## This program is free software; you can redistribute it and/or modify | |
| 4 ## it under the terms of the GNU General Public License as published by | |
| 5 ## the Free Software Foundation; either version 3 of the License, or | |
| 6 ## (at your option) any later version. | |
| 7 ## | |
| 8 ## This program is distributed in the hope that it will be useful, | |
| 9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 ## GNU General Public License for more details. | |
| 12 ## | |
| 13 ## You should have received a copy of the GNU General Public License | |
| 14 ## along with this program; see the file COPYING. If not, see | |
| 15 ## <http://www.gnu.org/licenses/>. | |
| 16 | |
| 17 ## -*- texinfo -*- | |
|
10793
be55736a0783
Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents:
10684
diff
changeset
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18 ## @deftypefn {Function File} {[@var{ver}, @var{url}] =} get_forge_pkg (@var{name}) |
| 10684 | 19 ## Tries to discover the current version of an OctaveForge package from the web, |
| 20 ## using a working internet connection and the urlread function. | |
|
10793
be55736a0783
Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents:
10684
diff
changeset
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21 ## If two output arguments are requested, returns also an address to download |
|
be55736a0783
Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents:
10684
diff
changeset
|
22 ## the file. |
| 10684 | 23 ## @end deftypefn |
| 24 | |
| 25 function [ver, url] = get_forge_pkg (name) | |
| 26 if (nargin != 1) | |
| 27 print_usage (); | |
| 28 endif | |
| 29 ## Verify that name is valid. | |
| 30 if (! (ischar (name) && rows (name) == 1 && ndims (name) == 2)) | |
| 31 error ("get_forge_pkg: package name must be a string"); | |
|
10959
4f46520e2103
relax check in get_forge_pkg
Jaroslav Hajek <highegg@gmail.com>
parents:
10793
diff
changeset
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32 elseif (! all (isalnum (name) | name == "-" | name == "." | name == "_")) |
| 10684 | 33 error ("get_forge_pkg: invalid package name: %s", name); |
| 34 endif | |
| 35 | |
| 36 name = tolower (name); | |
| 37 | |
| 38 ## Try to download package's index page. | |
| 39 [html, succ] = urlread (sprintf ("http://octave.sourceforge.net/%s/index.html", name)); | |
| 40 if (succ) | |
| 41 ## Remove blanks for simpler matching. | |
| 42 html(isspace(html)) = []; | |
| 43 ## Good. Let's grep for the version. | |
|
11032
c9b0a75b02e8
Make all regexp in Octave compatible with both POSIX and PCRE.
Rik <octave@nomad.inbox5.com>
parents:
10959
diff
changeset
|
44 pat = "<tdclass=""package_table"">PackageVersion:</td><td>([0-9.]*)</td>"; |
|
c9b0a75b02e8
Make all regexp in Octave compatible with both POSIX and PCRE.
Rik <octave@nomad.inbox5.com>
parents:
10959
diff
changeset
|
45 t = regexp (html, pat, "tokens"); |
| 10684 | 46 if (isempty (t) || isempty(t{1})) |
| 47 error ("get_forge_pkg: could not read version number from package's page."); | |
| 48 else | |
| 49 ver = t{1}{1}; | |
| 50 if (nargout > 1) | |
| 51 # Build download string. | |
| 52 urlbase = "http://downloads.sourceforge.net/octave/%s-%s.tar.gz?download"; | |
| 53 url = sprintf (urlbase, name, ver); | |
| 54 ## Verify that the string exists on the page. | |
| 55 if (isempty (strfind (html, url))) | |
| 56 warning ("get_forge_pkg: download URL not verified."); | |
| 57 endif | |
| 58 endif | |
| 59 endif | |
| 60 else | |
| 61 ## Try get the list of all packages. | |
| 62 [html, succ] = urlread ("http://octave.sourceforge.net/packages.php"); | |
| 63 if (succ) | |
|
11032
c9b0a75b02e8
Make all regexp in Octave compatible with both POSIX and PCRE.
Rik <octave@nomad.inbox5.com>
parents:
10959
diff
changeset
|
64 t = regexp (html, "<div class=""package"" id=""(\\w+)"">", "tokens"); |
| 10684 | 65 t = horzcat (t{:}); |
| 66 if (any (strcmp (t, name))) | |
| 67 error ("get_forge_pkg: package name exists, but index page not available"); | |
| 68 else | |
| 69 ## Try a simplistic method to determine close names. | |
| 70 dist = cellfun (@(n) length (setdiff (name, n)), t); | |
| 71 [~, i] = min (dist); | |
| 72 error ("get_forge_pkg: package not found: ""%s"". Maybe you meant ""%s?""", name, t{i}); | |
| 73 endif | |
| 74 else | |
| 75 error ("get_forge_pkg: could not read URL, please verify internet connection"); | |
| 76 endif | |
| 77 endif | |
| 78 | |
| 79 endfunction |