74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
#pragma once
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#ifndef REAL_BUILD
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# include "externals.hh"
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#endif
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/*= T_FilesWatcher / T_WatchedFiles ==========================================*/
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/* So we need to be able to watch for files being created, updated and deleted.
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* Watching for updates & deletions is pretty easy. For files being created,
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* one has to watch the parent directory. In addition, the case where a file
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* is being updated by rotation (move old, write new, rm old) needs to be
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* handled correctly as it is what vim does.
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*/
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struct T_FilesWatcher;
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struct T_WatchedFiles;
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using F_OnFileChanges = std::function< void( void ) >;
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struct T_FilesWatcher
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{
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friend struct T_WatchedFiles;
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T_FilesWatcher( T_FilesWatcher const& ) = delete;
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T_FilesWatcher( );
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T_FilesWatcher( T_FilesWatcher&& ) noexcept;
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~T_FilesWatcher( );
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void check( );
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private:
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struct T_File_ {
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int wd;
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T_Array< T_WatchedFiles* > watchers;
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void trigger( );
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};
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int fd;
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T_KeyValueTable< T_String , T_File_ > fileWatchers_;
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T_KeyValueTable< int , T_String > inotify_;
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T_Array< T_String > missing_;
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T_Array< T_WatchedFiles* > watched_;
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void watchFile( T_String const& path ,
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T_WatchedFiles* const watcher );
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void unwatchAll( T_WatchedFiles* const watcher );
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};
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/*----------------------------------------------------------------------------*/
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struct T_WatchedFiles
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{
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friend struct T_FilesWatcher;
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T_WatchedFiles( ) = delete;
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T_WatchedFiles( T_WatchedFiles const& ) = delete;
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T_WatchedFiles( T_WatchedFiles&& ) noexcept;
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T_WatchedFiles(
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T_FilesWatcher& watcher ,
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const F_OnFileChanges callback );
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~T_WatchedFiles( );
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void clear( );
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bool watch( T_String const& file );
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private:
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T_FilesWatcher* watcher;
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const F_OnFileChanges callback;
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bool triggered;
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};
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using P_WatchedFiles = T_OwnPtr< T_WatchedFiles >;
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