81 lines
1.5 KiB
C++
81 lines
1.5 KiB
C++
/*
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Copyright (C) 2000-2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "pbd/whitespace.h"
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using namespace std;
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namespace PBD {
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void
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strip_whitespace_edges (string& str)
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{
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string::size_type i;
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string::size_type len;
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string::size_type s = 0;
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len = str.length();
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if (len == 1) {
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return;
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}
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/* strip front */
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for (i = 0; i < len; ++i) {
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if (!isspace (str[i])) {
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break;
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}
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}
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if (i == len) {
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/* it's all whitespace, not much we can do */
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str = "";
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return;
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}
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/* strip back */
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if (len > 1) {
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s = i;
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i = len - 1;
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if (s == i) {
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return;
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}
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do {
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if (!isspace (str[i]) || i == 0) {
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break;
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}
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--i;
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} while (true);
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str = str.substr (s, (i - s) + 1);
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} else {
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str = str.substr (s);
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}
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}
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} // namespace PBD
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