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counter.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\iostreams\filter\counter.hpp
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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) // (C) Copyright 2005-2007 Jonathan Turkanis // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) // See http://www.boost.org/libs/iostreams for documentation. #ifndef BOOST_IOSTREAMS_COUNTER_HPP_INCLUDED #define BOOST_IOSTREAMS_COUNTER_HPP_INCLUDED #if defined(_MSC_VER) && (_MSC_VER >= 1020) # pragma once #endif #include
// count. #include
#include
#include
#include
// Must come last. #include
// VC7.1 C4244. namespace boost { namespace iostreams { // // Template name: basic_counter. // Template paramters: // Ch - The character type. // Description: Filter which counts lines and characters. // template
class basic_counter { public: typedef Ch char_type; struct category : dual_use, filter_tag, multichar_tag, optimally_buffered_tag { }; explicit basic_counter(int first_line = 0, int first_char = 0) : lines_(first_line), chars_(first_char) { } int lines() const { return lines_; } int characters() const { return chars_; } std::streamsize optimal_buffer_size() const { return 0; } template
std::streamsize read(Source& src, char_type* s, std::streamsize n) { std::streamsize result = iostreams::read(src, s, n); if (result == -1) return -1; lines_ += std::count(s, s + result, char_traits
::newline()); chars_ += result; return result; } template
std::streamsize write(Sink& snk, const char_type* s, std::streamsize n) { std::streamsize result = iostreams::write(snk, s, n); lines_ += std::count(s, s + result, char_traits
::newline()); chars_ += result; return result; } private: int lines_; int chars_; }; BOOST_IOSTREAMS_PIPABLE(basic_counter, 1) typedef basic_counter
counter; typedef basic_counter
wcounter; } } // End namespaces iostreams, boost. #include
#endif // #ifndef BOOST_IOSTREAMS_COUNTER_HPP_INCLUDED
counter.hpp
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