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173 lines
4.9 KiB
173 lines
4.9 KiB
/*
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* fm-mime-type.h
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*
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* Copyright 2009 - 2012 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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*
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* This file is a part of the Libfm library.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _FM2_MIME_TYPE_H_
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#define _FM2_MIME_TYPE_H_
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#include "../libfmqtglobals.h"
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#include <glib.h>
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#include <gio/gio.h>
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#include <memory>
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#include <vector>
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#include <string>
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#include <mutex>
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#include <cstring>
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#include <forward_list>
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#include <functional>
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#include "cstrptr.h"
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#include "gobjectptr.h"
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#include "iconinfo.h"
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#include "thumbnailer.h"
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namespace Fm {
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class LIBFM_QT_API MimeType {
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public:
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friend class Thumbnailer;
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explicit MimeType(const char* typeName);
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MimeType() = delete;
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~MimeType();
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std::shared_ptr<const Thumbnailer> firstThumbnailer() const {
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std::lock_guard<std::mutex> lock{mutex_};
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return thumbnailers_.empty() ? nullptr : thumbnailers_.front();
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}
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void forEachThumbnailer(std::function<bool(const std::shared_ptr<const Thumbnailer>&)> func) const {
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std::lock_guard<std::mutex> lock{mutex_};
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for(auto& thumbnailer: thumbnailers_) {
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if(func(thumbnailer)) {
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break;
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}
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}
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}
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const std::shared_ptr<const IconInfo>& icon() const {
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return icon_;
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}
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const char* name() const {
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return name_.get();
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}
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const char* desc() const {
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if(!desc_) {
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desc_ = CStrPtr{g_content_type_get_description(name_.get())};
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}
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return desc_.get();
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}
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static std::shared_ptr<const MimeType> fromName(const char* typeName);
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static std::shared_ptr<const MimeType> guessFromFileName(const char* fileName);
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bool isUnknownType() const {
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return g_content_type_is_unknown(name_.get());
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}
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bool isDesktopEntry() const {
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return this == desktopEntry().get();
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}
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bool isText() const {
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return g_content_type_is_a(name_.get(), "text/plain");
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}
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bool isImage() const {
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return !std::strncmp("image/", name_.get(), 6);
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}
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bool isMountable() const {
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return this == inodeMountPoint().get();
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}
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bool isShortcut() const {
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return this == inodeShortcut().get();
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}
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bool isDir() const {
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return this == inodeDirectory().get();
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}
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bool canBeExecutable() const {
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return g_content_type_can_be_executable(name_.get());
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}
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static std::shared_ptr<const MimeType> inodeDirectory() { // inode/directory
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if(!inodeDirectory_)
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inodeDirectory_ = fromName("inode/directory");
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return inodeDirectory_;
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}
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static std::shared_ptr<const MimeType> inodeShortcut() { // inode/x-shortcut
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if(!inodeShortcut_)
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inodeShortcut_ = fromName("inode/x-shortcut");
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return inodeShortcut_;
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}
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static std::shared_ptr<const MimeType> inodeMountPoint() { // inode/mount-point
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if(!inodeMountPoint_)
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inodeMountPoint_ = fromName("inode/mount-point");
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return inodeMountPoint_;
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}
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static std::shared_ptr<const MimeType> desktopEntry() { // application/x-desktop
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if(!desktopEntry_)
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desktopEntry_ = fromName("application/x-desktop");
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return desktopEntry_;
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}
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private:
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void removeThumbnailer(std::shared_ptr<const Thumbnailer>& thumbnailer) {
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std::lock_guard<std::mutex> lock{mutex_};
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thumbnailers_.remove(thumbnailer);
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}
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void addThumbnailer(std::shared_ptr<const Thumbnailer> thumbnailer) {
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std::lock_guard<std::mutex> lock{mutex_};
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thumbnailers_.push_front(std::move(thumbnailer));
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}
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private:
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std::shared_ptr<const IconInfo> icon_;
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CStrPtr name_;
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mutable CStrPtr desc_;
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std::forward_list<std::shared_ptr<const Thumbnailer>> thumbnailers_;
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static std::unordered_map<const char*, std::shared_ptr<const MimeType>, CStrHash, CStrEqual> cache_;
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static std::mutex mutex_;
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static std::shared_ptr<const MimeType> inodeDirectory_; // inode/directory
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static std::shared_ptr<const MimeType> inodeShortcut_; // inode/x-shortcut
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static std::shared_ptr<const MimeType> inodeMountPoint_; // inode/mount-point
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static std::shared_ptr<const MimeType> desktopEntry_; // application/x-desktop
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};
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} // namespace Fm
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#endif
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