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util/helpers.lua @ 13039:9ddb344b9fab
util.human.io: Allow defining per column ellipsis function
As an alternative to doing it in the mapper function. Could be useful in
cases where one may want to put the ellipsis in the middle or beginning
instead of the start.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Fri, 07 Apr 2023 13:00:58 +0200 |
parent | 12975:d10957394a3c |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local debug = require "prosody.util.debug"; -- Helper functions for debugging local log = require "prosody.util.logger".init("util.debug"); local function log_events(events, name, logger) local f = events.fire_event; if not f then error("Object does not appear to be a util.events object"); end logger = logger or log; name = name or tostring(events); function events.fire_event(event, ...) logger("debug", "%s firing event: %s", name, event); return f(event, ...); end local function event_handler_hook(handler, event_name, event_data) logger("debug", "calling handler for %s: %s", event_name, handler); local ok, ret = pcall(handler, event_data); if not ok then logger("error", "error in event handler %s: %s", handler, ret); error(ret); end if ret ~= nil then logger("debug", "event chain ended for %s by %s with result: %s", event_name, handler, ret); end return ret; end events.set_debug_hook(event_handler_hook); events[events.fire_event] = f; return events; end local function revert_log_events(events) events.fire_event, events[events.fire_event] = events[events.fire_event], nil; -- :)) events.set_debug_hook(nil); end local function log_host_events(host) return log_events(prosody.hosts[host].events, host); end local function revert_log_host_events(host) return revert_log_events(prosody.hosts[host].events); end local function show_events(events, specific_event) local event_handlers = events._handlers; local events_array = {}; local event_handler_arrays = {}; for event, priorities in pairs(events._event_map) do local handlers = event_handlers[event]; if handlers and (event == specific_event or not specific_event) then table.insert(events_array, event); local handler_strings = {}; for i, handler in ipairs(handlers) do local upvals = debug.string_from_var_table(debug.get_upvalues_table(handler)); handler_strings[i] = " "..(priorities[handler] or "?")..": "..tostring(handler)..(upvals and ("\n "..upvals) or ""); end event_handler_arrays[event] = handler_strings; end end table.sort(events_array); local i = 1; while i <= #events_array do local handlers = event_handler_arrays[events_array[i]]; for j=#handlers, 1, -1 do table.insert(events_array, i+1, handlers[j]); end if i > 1 then events_array[i] = "\n"..events_array[i]; end i = i + #handlers + 1 end return table.concat(events_array, "\n"); end local function get_upvalue(f, get_name) local i, name, value = 0; repeat i = i + 1; name, value = debug.getupvalue(f, i); until name == get_name or name == nil; return value; end return { log_host_events = log_host_events; revert_log_host_events = revert_log_host_events; log_events = log_events; revert_log_events = revert_log_events; show_events = show_events; get_upvalue = get_upvalue; };