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livetrax/libs/pbd/whitespace.cc
David Robillard 2e8f80e37a Merged with trunk R1719.
Updated for Jack MIDI SVN branch (required for now).


git-svn-id: svn://localhost/ardour2/branches/midi@1720 d708f5d6-7413-0410-9779-e7cbd77b26cf
2007-04-14 18:39:01 +00:00

81 lines
1.6 KiB
C++

/*
Copyright (C) 2000-2007 Paul Davis
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <pbd/whitespace.h>
using namespace std;
namespace PBD {
void
strip_whitespace_edges (string& str)
{
string::size_type i;
string::size_type len;
string::size_type s = 0;
len = str.length();
if (len == 1) {
return;
}
/* strip front */
for (i = 0; i < len; ++i) {
if (isgraph (str[i])) {
break;
}
}
if (i == len) {
/* it's all whitespace, not much we can do */
str = "";
return;
}
/* strip back */
if (len > 1) {
s = i;
i = len - 1;
if (s == i) {
return;
}
do {
if (isgraph (str[i]) || i == 0) {
break;
}
--i;
} while (true);
str = str.substr (s, (i - s) + 1);
} else {
str = str.substr (s);
}
}
} // namespace PBD