+/*
+ 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.
+
+*/
+
#ifndef PBD_TOKENIZER
#define PBD_TOKENIZER
#include <iterator>
#include <string>
+#include "pbd/whitespace.h"
+
namespace PBD {
/**
Tokenize string, this should work for standard
- strings aswell as Glib::ustring. This is a bit of a hack,
+ strings as well as Glib::ustring. This is a bit of a hack,
there are much better string tokenizing patterns out there.
+ If strip_whitespace is set to true, tokens will be checked to see
+ that they still have a length after stripping. If no length, they
+ are discarded.
*/
template<typename StringType, typename Iter>
unsigned int
tokenize(const StringType& str,
const StringType& delims,
- Iter it)
+ Iter it,
+ bool strip_whitespace=false)
{
typename StringType::size_type start_pos = 0;
typename StringType::size_type end_pos = 0;
if (end_pos == str.npos) {
end_pos = str.length();
}
- *it++ = str.substr(start_pos, end_pos - start_pos);
+ if (strip_whitespace) {
+ StringType stripped = str.substr(start_pos, end_pos - start_pos);
+ strip_whitespace_edges (stripped);
+ if (stripped.length()) {
+ *it++ = stripped;
+ }
+ } else {
+ *it++ = str.substr(start_pos, end_pos - start_pos);
+ }
++token_count;
start_pos = str.find_first_not_of(delims, end_pos + 1);
}
} while (start_pos != str.npos);
if (start_pos != str.npos) {
- *it++ = str.substr(start_pos, str.length() - start_pos);
+ if (strip_whitespace) {
+ StringType stripped = str.substr(start_pos, str.length() - start_pos);
+ strip_whitespace_edges (stripped);
+ if (stripped.length()) {
+ *it++ = stripped;
+ }
+ } else {
+ *it++ = str.substr(start_pos, str.length() - start_pos);
+ }
++token_count;
}