printing/page_range.cc

   1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "printing/page_range.h"
   6
   7 #include "base/stl_util-inl.h"
   8
   9 namespace printing {
  10
  11 /* static */
  12 std::vector<int> PageRange::GetPages(const PageRanges& ranges) {
  13   std::set<int> pages;
  14   for (unsigned i = 0; i < ranges.size(); ++i) {
  15     const PageRange& range = ranges[i];
  16     // Ranges are inclusive.
  17     for (int i = range.from; i <= range.to; ++i) {
  18       pages.insert(i);
  19     }
  20   }
  21   return SetToVector(pages);
  22 }
  23
  24 /* static */
  25 int PageRange::GetTotalPages(const PageRanges& ranges) {
  26   // Since ranges can overlap we need to merge them before counting
  27   std::vector<int> pages = PageRange::GetPages(ranges);
  28   return pages.size();
  29 }
  30
  31 }  // namespace printing