565 lines
15 KiB
XML
565 lines
15 KiB
XML
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!DOCTYPE muclient>
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<muclient>
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<plugin
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name="MUSHclient_Help"
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author="Nick Gammon"
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id="d2fa45d390d935d947cdc169"
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language="Lua"
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purpose="Shows the MUSHclient help file"
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save_state="y"
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date_written="2011-06-13 08:58:30"
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date_modified="2016-07-17 12:25"
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requires="4.76"
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version="1.1"
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>
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<description trim="y">
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<![CDATA[
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To get general help:
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mchelp <search string>
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mchelps <search string> --> get help with snippet (context) shown
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mchelp <number> --> show help on numbered item from previous search
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mchelp --> on its own, shows this help
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Search strings can have boolean operators in them, namely the words:
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AND NEAR NOT OR
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These words must be in all capitals or they are just searched for literally.
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For example:
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mchelp trigger AND alias
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mchelp delete AND trigger NEAR count
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mchelp search NOT table
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mchelp search -table
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mchelp add OR delete
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mchelp next NEAR/5 table
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mchelp add AND (trigger OR alias)
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(The syntax NEAR/5 means if one word is within 5 words of another word, the default is 10)
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You can use a wildcard suffix, eg.
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mchelp trigg*
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You can look for phrases by putting them in quotes, eg.
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mchelp "hash a string"
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You can restrict the lookup to the item name (eg. the function name) like this:
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mchelp name:utils.*
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]]>
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</description>
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</plugin>
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<!-- Aliases -->
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<aliases>
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<alias
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script="help_find"
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match="^mchelp (.+)$"
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enabled="y"
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group="help"
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regexp="y"
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sequence="100"
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>
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</alias>
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<alias
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script="help_number"
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match="^mchelp (\d+)$"
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enabled="y"
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group="help"
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regexp="y"
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sequence="90"
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>
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</alias>
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<alias
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script="help_find_snippet"
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match="^mchelps (.+)$"
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enabled="y"
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group="help"
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regexp="y"
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sequence="100"
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>
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</alias>
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<alias
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script="OnHelp"
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match="^mchelps?$"
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enabled="y"
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regexp="y"
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>
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</alias>
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</aliases>
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<!-- Script -->
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<script>
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<![CDATA[
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require "pairsbykeys"
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-- major headings
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local HEADINGCOLOUR = "yellow"
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local NAMECOLOUR = "cyan"
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local SUMMARYCOLOUR = "white"
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local PROTOTYPECOLOUR = "cyan"
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local DESCRIPTIONCOLOUR = "white"
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local NOTESCOLOUR = "white"
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local HELPCOLOUR = "indianred"
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-- tags (eg. bold, italic)
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local CODECOLOUR = "greenyellow"
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local RETURNVALUE = "thistle"
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local BOLDCOLOUR = "orange"
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local ITALICCOLOUR = "linen"
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-- for snippets
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local RESET = ANSI (0)
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local BOLD = ANSI (1)
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local UNBOLD = ANSI (22)
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local SNIPPETSIZE = -15 -- how many tokens to show around snippet
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local styles
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-- SQL fixup function
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local function fixsql (s)
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-- replace single quotes with two lots of single quotes
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if s then
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return "'" .. (string.gsub (s, "'", "''")) .. "'"
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end -- if string exists
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return "NULL"
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end -- fixsql
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-- for fixing up entities
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local entities = {
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["<"] = "<";
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[">"] = ">";
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["&"] = "&";
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["""] = "\"";
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} -- end of entities
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-- what to do on getting a tag like <b>
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local tag_handlers = {
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["<b>"] = function () SetNoteColourFore (ColourNameToRGB (BOLDCOLOUR)) end;
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["<i>"] = function () SetNoteColourFore (ColourNameToRGB (ITALICCOLOUR)) end;
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["<code>"] = function () SetNoteColourFore (ColourNameToRGB (CODECOLOUR)) end;
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["<ul>"] = function () end;
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["<li/>"] = function () Tell (" * ") end;
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["<hr/>"] = function () NoteHr () end;
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} -- end of tag_handlers
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-- called by LPEG to output an opening, closing, or empty tag
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local function tag_output (tag)
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-- restore colour on closing tag, save colour on nested tag
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if tag:sub (2, 2) == "/" then
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SetNoteColourFore (table.remove (styles))
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elseif tag:sub (-2, -2) ~= "/" then
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table.insert (styles, GetNoteColourFore () )
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end -- if
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local f = tag_handlers [tag:lower ()]
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if f then
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f ()
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end -- if handler found
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end -- tag_output
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-- called by LPEG to output straight text
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local function text_output (text)
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-- fix up entities like <
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Tell ((text:gsub ("&%a-;", entities)))
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end -- text_output
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-- LPEG grammar for (simplified) HTML
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local P, R, S, C, Cc, Ct = lpeg.P, lpeg.R, lpeg.S, lpeg.C, lpeg.Cc, lpeg.Ct
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local TAG = (P"<" * P"/"^-1 * R("AZ", "az")^1 * P"/"^-1 * P">")/tag_output
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local NOT_TAG = ((1 - lpeg.P"<")^0/text_output)
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local HTML = (NOT_TAG * TAG * NOT_TAG)^1 + NOT_TAG
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-- show a help item with a coloured heading, and coloured text
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local function show_item (hdg_colour, hdg, text_colour, text, tagged)
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if text and text ~= "" then
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if hdg and hdg ~= "" then
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ColourNote (hdg_colour, "", hdg)
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print ""
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end -- if any heading
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if tagged then
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local notecolour = GetNoteColourFore ()
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styles = {} -- nested styles - start off with none
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SetNoteColourFore (ColourNameToRGB (text_colour))
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lpeg.match (HTML, text)
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SetNoteColourFore (notecolour)
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print "" -- probably doesn't end with newline
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else
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ColourNote (text_colour, "", text)
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end -- if tagged or not
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print ""
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end -- if any text
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end -- show_item
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-- normal functions
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local function show_functions_help (row)
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NoteHr ()
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show_item (HEADINGCOLOUR, "Function", NAMECOLOUR, row.name)
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show_item (HEADINGCOLOUR, "Summary", SUMMARYCOLOUR, row.summary)
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show_item (HEADINGCOLOUR, "Prototype", PROTOTYPECOLOUR, row.prototype)
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show_item (HEADINGCOLOUR, "Description", DESCRIPTIONCOLOUR, row.description)
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show_item (HEADINGCOLOUR, "Return Value", RETURNVALUE, row.return_value)
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show_item (HEADINGCOLOUR, "Lua Example", CODECOLOUR, row.lua_example)
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show_item (HEADINGCOLOUR, "Lua Notes", NOTESCOLOUR, row.lua_notes)
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end -- show_functions_help
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-- general help (major topics)
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local function show_general_help (row)
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NoteHr ()
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show_item (NOTESCOLOUR, "", NAMECOLOUR, row.title)
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show_item (HEADINGCOLOUR, "Summary", SUMMARYCOLOUR, row.description, true) -- HTML codes
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end -- show_general_help
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-- lua functions
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local function show_lua_functions_help (row)
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NoteHr ()
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show_item (HEADINGCOLOUR, "Lua", NAMECOLOUR, row.name)
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show_item (HEADINGCOLOUR, "Summary", SUMMARYCOLOUR, row.summary)
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show_item (HEADINGCOLOUR, "Prototype", PROTOTYPECOLOUR, row.prototype)
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show_item (HEADINGCOLOUR, "Description", DESCRIPTIONCOLOUR, row.description, true) -- HTML codes
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end -- show_lua_functions_help
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local hyperlink_handlers = {
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functions = { sql = "SELECT * FROM functions WHERE name = %s",
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handler = show_functions_help };
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general = { sql = "SELECT * FROM general_doc WHERE doc_name = %s",
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handler = show_general_help };
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lua_functions = { sql = "SELECT * FROM lua_functions WHERE name = %s",
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handler = show_lua_functions_help };
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} -- end of hyperlink_handlers
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-- here when hyperlink clicked
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function do_hyperlink (s)
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local what, name = string.match (s, "([%a_]+):([%a%d_%. :]+)")
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if not what then return end
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local help = hyperlink_handlers [what]
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if not help then
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ColourNote ("red", "", "Handler not found for " .. what)
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return
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end -- if not found
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-- should only find one match here ...
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for row in db:nrows(string.format (help.sql, fixsql (name))) do
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help.handler (row)
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end -- finding function
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end -- do_hyperlink
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help_items = {}
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function general_help (search_string, want_snippet)
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local searchfor = fixsql (search_string)
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AnsiNote (RESET)
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if not db then
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ColourNote ("red", "", "MUSHclient help database 'help.db' not found.")
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return
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end -- if
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local count = 0
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local functions = {}
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local general = {}
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local lua_functions = {}
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help_items = {}
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local item_count = 0
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function show_snippet (what, name, title, extra, snippet)
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item_count = item_count + 1
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help_items [item_count] = what .. ":" .. name
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Tell " "
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Hyperlink ("!!" .. GetPluginID () .. ":do_hyperlink(" .. what .. ":" .. name .. ")",
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item_count .. ". " .. title, "Click for help on " .. title, "cyan", "", false)
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if extra ~= "" then
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Tell (" - ", extra)
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end -- if
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print ""
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-- show snippet
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if want_snippet then
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-- get rid of newlines, and multiple spaces
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AnsiNote (RESET .. string.gsub (snippet, "%s+", " "))
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print ""
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end -- if snippet wanted
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end -- show_snippet
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NoteHr ()
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-- GENERAL documentation
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-- find matching items using FTS
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for row in db:nrows(string.format (
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[[
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SELECT name, summary, snippet(general_doc_lookup, '%s', '%s', ' ... ', -1, %i) AS snippet
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FROM general_doc_lookup
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WHERE general_doc_lookup MATCH %s]],
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BOLD, UNBOLD, SNIPPETSIZE,
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searchfor)) do
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general [row.name] = { snippet = row.snippet, summary = row.summary }
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count = count + 1
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end -- finding item
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if next (general) then
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ColourNote (HEADINGCOLOUR, "", "Topics")
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for k, v in pairsByKeys (general) do
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show_snippet ("general", k, v.summary, "", v.snippet)
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end -- for
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end -- if
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-- FUNCTIONS documentation
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-- find matching items using FTS
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for row in db:nrows(string.format (
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[[
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SELECT name, summary, snippet(functions_lookup, '%s', '%s', ' ... ', -1, %i) AS snippet
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FROM functions_lookup
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WHERE functions_lookup MATCH %s]],
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BOLD, UNBOLD, SNIPPETSIZE,
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searchfor)) do
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functions [row.name] = { snippet = row.snippet, summary = row.summary }
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count = count + 1
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end -- finding item
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if next (functions) then
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ColourNote (HEADINGCOLOUR, "", "Functions")
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for k, v in pairsByKeys (functions) do
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show_snippet ("functions", k, k, v.summary, v.snippet)
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end -- for
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end -- if
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-- LUA FUNCTIONS documentation
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-- find matching items using FTS
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for row in db:nrows(string.format (
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[[
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SELECT name, summary, snippet(lua_functions_lookup, '%s', '%s', ' ... ', -1, %i) AS snippet
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FROM lua_functions_lookup
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WHERE lua_functions_lookup MATCH %s]],
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BOLD, UNBOLD, SNIPPETSIZE,
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searchfor)) do
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lua_functions [row.name] = { snippet = row.snippet, summary = row.summary }
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count = count + 1
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end -- finding item
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if next (lua_functions) then
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ColourNote (HEADINGCOLOUR, "", "Lua")
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for k, v in pairsByKeys (lua_functions) do
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show_snippet ("lua_functions", k, k, v.summary, v.snippet)
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end -- for
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end -- if
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if count == 0 then
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print ("Nothing found for:", search_string)
|
||
|
|
elseif item_count == 1 then
|
||
|
|
do_hyperlink (help_items [1]) -- automatically show only match
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
end -- general_help
|
||
|
|
|
||
|
|
-- here when they want to search the help
|
||
|
|
|
||
|
|
function help_find (name, line, wildcards)
|
||
|
|
general_help (wildcards [1], false)
|
||
|
|
end -- help_find
|
||
|
|
|
||
|
|
function help_find_snippet (name, line, wildcards)
|
||
|
|
general_help (wildcards [1], true)
|
||
|
|
end -- help_find_snippet
|
||
|
|
|
||
|
|
local function fix_description (s)
|
||
|
|
if not s then
|
||
|
|
return ""
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
-- get rid of tags
|
||
|
|
s = s:gsub ("</?%a+/?>", "")
|
||
|
|
|
||
|
|
-- convert entities ...
|
||
|
|
s = s:gsub ("&%a-;", entities)
|
||
|
|
|
||
|
|
return s
|
||
|
|
end -- fix_description
|
||
|
|
|
||
|
|
function help_number (name, line, wildcards)
|
||
|
|
local which = tonumber (wildcards [1])
|
||
|
|
|
||
|
|
if #help_items == 0 then
|
||
|
|
print ("No recent search done which gave any results")
|
||
|
|
return
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
if which < 1 or which > #help_items then
|
||
|
|
print (string.format ("Requested help item %i not recently displayed - valid range is 1 to %i",
|
||
|
|
which, #help_items))
|
||
|
|
return
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
do_hyperlink (help_items [which])
|
||
|
|
|
||
|
|
end -- help_number
|
||
|
|
|
||
|
|
function OnPluginInstall ()
|
||
|
|
-- open database on disk
|
||
|
|
|
||
|
|
if not db then
|
||
|
|
db = assert (sqlite3.open(GetInfo (66) .. "help.db"))
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
local commands = false
|
||
|
|
|
||
|
|
-- see if commands table exists
|
||
|
|
for row in db:nrows("SELECT * FROM sqlite_master WHERE type = 'table' AND name = 'commands'") do
|
||
|
|
commands = true
|
||
|
|
end
|
||
|
|
|
||
|
|
if not commands then
|
||
|
|
ColourNote ("red", "", "MUSHclient help database 'help.db' not found.")
|
||
|
|
db:close ()
|
||
|
|
db = nil
|
||
|
|
return
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
local fts4 = false
|
||
|
|
|
||
|
|
-- see if fts4 tables exist
|
||
|
|
for row in db:nrows("SELECT * FROM sqlite_master WHERE type = 'table' AND name = 'commands_lookup'") do
|
||
|
|
fts4 = true
|
||
|
|
end
|
||
|
|
|
||
|
|
-- if no fts4 tables, make them
|
||
|
|
if not fts4 then
|
||
|
|
local start = utils.timer ()
|
||
|
|
ColourNote ("cyan", "", "Creating help database full-text lookup tables ...")
|
||
|
|
|
||
|
|
-- START
|
||
|
|
assert (db:execute [[
|
||
|
|
BEGIN TRANSACTION;
|
||
|
|
DROP TABLE IF EXISTS commands_lookup;
|
||
|
|
DROP TABLE IF EXISTS dialogs_lookup;
|
||
|
|
DROP TABLE IF EXISTS functions_lookup;
|
||
|
|
DROP TABLE IF EXISTS general_doc_lookup;
|
||
|
|
DROP TABLE IF EXISTS errors_lookup;
|
||
|
|
DROP TABLE IF EXISTS lua_functions_lookup;
|
||
|
|
]])
|
||
|
|
|
||
|
|
-- COMMANDS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE commands_lookup USING FTS4(name, summary, description)")
|
||
|
|
|
||
|
|
-- fix up HTML stuff
|
||
|
|
for row in db:nrows("SELECT command_name, short_description, description FROM commands") do
|
||
|
|
assert (db:execute (string.format ([[
|
||
|
|
INSERT INTO commands_lookup (name, summary, description)
|
||
|
|
VALUES (%s, %s, %s)]],
|
||
|
|
fixsql (row.command_name),
|
||
|
|
fixsql (row.short_description),
|
||
|
|
fixsql (fix_description (row.description)))))
|
||
|
|
end -- for
|
||
|
|
|
||
|
|
-- DIALOGS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE dialogs_lookup USING FTS4(name, summary, description)")
|
||
|
|
|
||
|
|
-- fix up HTML stuff
|
||
|
|
for row in db:nrows("SELECT dialog_name, title, description FROM dialogs") do
|
||
|
|
assert (db:execute (string.format ([[
|
||
|
|
INSERT INTO dialogs_lookup (name, summary, description)
|
||
|
|
VALUES (%s, %s, %s)]],
|
||
|
|
fixsql (row.dialog_name),
|
||
|
|
fixsql (row.title),
|
||
|
|
fixsql (fix_description (row.description)))))
|
||
|
|
end -- for
|
||
|
|
|
||
|
|
-- WORLD FUNCTIONS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE functions_lookup USING FTS4(name, summary, description, lua_example, lua_notes)")
|
||
|
|
assert (db:execute [[INSERT INTO functions_lookup (name, summary, description, lua_example, lua_notes)
|
||
|
|
SELECT name, summary, description, lua_example, lua_notes FROM functions]])
|
||
|
|
|
||
|
|
-- GENERAL TOPICS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE general_doc_lookup USING FTS4(name, summary, description)")
|
||
|
|
|
||
|
|
-- fix up HTML stuff
|
||
|
|
for row in db:nrows("SELECT doc_name, title, description FROM general_doc") do
|
||
|
|
assert (db:execute (string.format ([[
|
||
|
|
INSERT INTO general_doc_lookup (name, summary, description)
|
||
|
|
VALUES (%s, %s, %s)]],
|
||
|
|
fixsql (row.doc_name),
|
||
|
|
fixsql (row.title),
|
||
|
|
fixsql (fix_description (row.description)))))
|
||
|
|
end -- for
|
||
|
|
|
||
|
|
-- ERRORS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE errors_lookup USING FTS4(name, error_code, description)")
|
||
|
|
assert (db:execute [[INSERT INTO errors_lookup (name, error_code, description)
|
||
|
|
SELECT error_name, error_code, meaning FROM errors ]])
|
||
|
|
|
||
|
|
-- LUA FUNCTIONS
|
||
|
|
assert (db:execute "CREATE VIRTUAL TABLE lua_functions_lookup USING FTS4(name, summary, description)")
|
||
|
|
|
||
|
|
-- fix up HTML stuff
|
||
|
|
for row in db:nrows("SELECT name, summary, description FROM lua_functions") do
|
||
|
|
assert (db:execute (string.format ([[
|
||
|
|
INSERT INTO lua_functions_lookup (name, summary, description)
|
||
|
|
VALUES (%s, %s, %s)]],
|
||
|
|
fixsql (row.name),
|
||
|
|
fixsql (row.summary),
|
||
|
|
fixsql (fix_description (row.description)))))
|
||
|
|
end -- for
|
||
|
|
|
||
|
|
-- DONE
|
||
|
|
assert (db:execute "COMMIT;")
|
||
|
|
ColourNote ("cyan", "", string.format ("Done. Took %0.3f seconds.", utils.timer () - start))
|
||
|
|
|
||
|
|
end -- if
|
||
|
|
|
||
|
|
end -- OnPluginInstall
|
||
|
|
|
||
|
|
function OnHelp ()
|
||
|
|
NoteHr ()
|
||
|
|
ColourNote (HELPCOLOUR, "", world.GetPluginInfo (world.GetPluginID (), 3))
|
||
|
|
end
|
||
|
|
|
||
|
|
]]>
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</muclient>
|