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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/page_range.h"
#include <stddef.h>
#include <algorithm>
#include <set>
namespace printing {
// static
void PageRange::Normalize(PageRanges& ranges) {
if (ranges.empty())
return;
std::sort(ranges.begin(), ranges.end());
PageRanges::iterator dst = ranges.begin();
for (PageRanges::iterator src = ranges.begin() + 1; src < ranges.end();
++src) {
if (dst->to + 1 < src->from) {
*++dst = *src;
continue;
}
dst->to = std::max(dst->to, src->to);
}
if (dst < ranges.end())
dst++;
ranges.resize(dst - ranges.begin());
}
} // namespace printing
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