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/* |
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|
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MacOS X implementation of the SKK input method. |
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|
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Copyright (C) 2007 Tomotaka SUWA <t.suwa@mac.com> |
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|
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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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any later version. |
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|
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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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|
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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*/ |
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|
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#include "SKKAutoUpdateDictionary.h" |
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#include <sys/stat.h> |
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#include <cerrno> |
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#include <sstream> |
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#include <fstream> |
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#include "socketutil.h" |
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|
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// 辞書ダウンロードクラス |
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class SKKAutoUpdateDictionaryLoader : public SKKDictionaryLoader { |
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bool first_; |
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short port_; |
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std::string host_; |
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std::string url_; |
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std::string path_; |
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std::string tmp_path_; |
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|
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virtual bool run() { |
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if(first_) { |
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notify(); |
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} |
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|
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net::socket::tcpstream http(host_, port_); |
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|
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if(request(http)) { |
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int length = content_length(http); |
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|
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if(download(http, length)) { |
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notify(); |
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} |
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} |
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|
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return true; |
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} |
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|
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bool request(net::socket::tcpstream& http) { |
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char timestamp[64]; |
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struct stat st; |
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|
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if(stat(path_.c_str(), &st) != 0) { |
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st.st_mtime = 0; |
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} |
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|
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// HTTP 日付を生成する(RFC 822, updated by RFC 1123) |
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// |
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// 例) "Sun, 06 Nov 1994 08:49:37 GMT" |
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strftime(timestamp, sizeof(timestamp), |
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"%a, %d %b %Y %T GMT", gmtime(&st.st_mtime)); |
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|
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http << "GET " << url_ << " HTTP/1.1\r\n"; |
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http << "Host: " << host_ << "\r\n"; |
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http << "If-Modified-Since: " << timestamp << "\r\n"; |
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http << "Connection: close\r\n"; |
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http << "\r\n" << std::flush; |
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|
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return http; |
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} |
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|
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int content_length(net::socket::tcpstream& http) { |
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int length = 0; |
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std::string response; |
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|
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while(std::getline(http, response) && response != "\r") { |
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if(response.find("HTTP/1.1") != std::string::npos) { |
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std::istringstream buf(response); |
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|
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// "HTTP/1.1 200" を期待する |
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buf >> response >> response; |
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if(response != "200") { |
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while(std::getline(http, response)) {} |
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break; |
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} |
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} |
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|
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if(response.find("Content-Length") != std::string::npos) { |
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std::istringstream buf(response); |
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buf >> response >> length; |
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} |
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} |
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|
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return length; |
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} |
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|
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bool download(net::socket::tcpstream& http, int length) { |
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if(!length) return false; |
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|
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std::string line; |
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std::ofstream ofs(tmp_path_.c_str()); |
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|
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while(std::getline(http, line)) { |
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ofs << line << std::endl; |
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} |
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|
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struct stat st; |
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if(stat(tmp_path_.c_str(), &st) < 0 || st.st_size != length) { |
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return false; |
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} |
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|
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if(rename(tmp_path_.c_str(), path_.c_str()) != 0) { |
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std::cerr << "SKKAutoUpdateDictionaryLoader::download(): rename failed: errno=" |
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<< errno << std::endl; |
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return false; |
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} |
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|
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return true; |
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} |
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|
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void notify() { |
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SKKDictionaryFile tmp; |
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|
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if(tmp.Load(path_)) { |
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tmp.Sort(); |
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NotifyObserver(tmp); |
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} else { |
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if(first_) { |
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first_ = false; |
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NotifyObserver(tmp); |
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} |
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} |
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} |
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|
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public: |
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SKKAutoUpdateDictionaryLoader(const std::string& location) : first_(true), port_(80) { |
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std::istringstream buf(location); |
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|
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buf >> host_ >> url_; |
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|
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buf.ignore(1); |
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std::getline(buf, path_); |
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|
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buf.clear(); |
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std::replace(host_.begin(), host_.end(), ':', ' '); |
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buf.str(host_); |
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|
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buf >> host_ >> port_; |
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tmp_path_ = path_ + ".download"; |
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} |
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}; |
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|
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// ====================================================================== |
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|
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SKKAutoUpdateDictionary::SKKAutoUpdateDictionary() : loader_(0) {} |
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|
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void SKKAutoUpdateDictionary::Initialize(const std::string& location) { |
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if(loader_.get()) return; |
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|
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loader_ = std::auto_ptr<SKKAutoUpdateDictionaryLoader>(new SKKAutoUpdateDictionaryLoader(location)); |
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keeper_.Initialize(loader_.get(), 60 * 60 * 6, 3); |
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} |
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|
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std::string SKKAutoUpdateDictionary::FindOkuriAri(const std::string& query) { |
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return keeper_.FindOkuriAri(query); |
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} |
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|
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std::string SKKAutoUpdateDictionary::FindOkuriNasi(const std::string& query) { |
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return keeper_.FindOkuriNasi(query); |
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} |
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|
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bool SKKAutoUpdateDictionary::FindCompletions(const std::string& entry, std::vector<std::string>& result) { |
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return keeper_.FindCompletions(entry, result); |
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} |
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|
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// ファクトリメソッドの登録 |
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#include "SKKDictionaryFactory.h" |
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static bool initialize = SKKRegisterFactoryMethod<SKKAutoUpdateDictionary>(SKKAutoUpdateDictionaryType); |