95 lines
2.9 KiB
Lua
95 lines
2.9 KiB
Lua
local M = {}
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local global_handlers = {}
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local Event = {
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NodeRenamed = 'NodeRenamed',
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FileCreated = 'FileCreated',
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FileRemoved = 'FileRemoved',
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FolderCreated = 'FolderCreated',
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FolderRemoved = 'FolderRemoved',
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}
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local function get_handlers(event_name)
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return global_handlers[event_name] or {}
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end
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local function register_handler(event_name, handler)
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local handlers = get_handlers(event_name)
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table.insert(handlers, handler)
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global_handlers[event_name] = handlers
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end
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local function dispatch(event_name, payload)
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for _, handler in pairs(get_handlers(event_name)) do
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local success, error = pcall(handler, payload)
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if not success then
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vim.api.nvim_err_writeln('Handler for event ' .. event_name .. ' errored. ' .. vim.inspect(error))
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end
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end
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end
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--@private
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function M._dispatch_node_renamed(old_name, new_name)
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dispatch(Event.NodeRenamed, {old_name=old_name, new_name=new_name})
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end
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--@private
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function M._dispatch_file_removed(fname)
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dispatch(Event.FileRemoved, {fname=fname})
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end
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--@private
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function M._dispatch_file_created(fname)
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dispatch(Event.FileCreated, {fname=fname})
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end
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--@private
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function M._dispatch_folder_created(folder_name)
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dispatch(Event.FolderCreated, {folder_name=folder_name})
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end
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--@private
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function M._dispatch_folder_removed(folder_name)
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dispatch(Event.FolderRemoved, {folder_name=folder_name})
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end
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--Registers a handler for the NodeRenamed event.
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--@param handler (function) Handler with the signature function(payload), where payload is a table containing:
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-- - old_name (string) Absolute path to the old node location.
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-- - new_name (string) Absolute path to the new node location.
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function M.on_node_renamed(handler)
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register_handler(Event.NodeRenamed, handler)
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end
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--Registers a handler for the FileCreated event.
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--@param handler (function) Handler with the signature function(payload), where payload is a table containing:
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-- - fname (string) Absolute path to the created file.
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function M.on_file_created(handler)
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register_handler(Event.FileCreated, handler)
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end
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--Registers a handler for the FileRemoved event.
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--@param handler (function) Handler with the signature function(payload), where payload is a table containing:
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-- - fname (string) Absolute path to the removed file.
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function M.on_file_removed(handler)
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register_handler(Event.FileRemoved, handler)
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end
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--Registers a handler for the FolderCreated event.
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--@param handler (function) Handler with the signature function(payload), where payload is a table containing:
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-- - folder_name (string) Absolute path to the created folder.
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function M.on_folder_created(handler)
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register_handler(Event.FolderCreated, handler)
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end
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--Registers a handler for the FolderRemoved event.
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--@param handler (function) Handler with the signature function(payload), where payload is a table containing:
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-- - folder_name (string) Absolute path to the removed folder.
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function M.on_folder_removed(handler)
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register_handler(Event.FolderRemoved, handler)
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end
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return M
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