Modul:TemplUtl
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Die Dokumentation für dieses Modul kann unter Modul:TemplUtl/Doku erstellt werden
local TemplUtl = { suite = "TemplUtl",
serial = "2019-02-01" };
local fiatTitleRegExp = function ( accept )
-- Create pattern to detect page name
-- Precondition:
-- accept -- string; trimmed title
-- Postcondition:
-- Returns string with pattern
local start = mw.ustring.sub( accept, 1, 1 );
local r;
if mw.ustring.match( start, "%a" ) then
r = string.format( "[%s%s]%s",
mw.ustring.lower( start ),
mw.ustring.upper( start ),
mw.ustring.sub( accept, 2 ) );
else
r = accept;
end
if r:match( " " ) then
r = r:gsub( "%", "%%" )
:gsub( "[%-^.?+*()$]", "%$1" )
:gsub( "_", " " )
:gsub( "%s+", "[%s_]+" );
end
return r;
end -- fiatTitleRegExp()
local framing = function ( frame )
if not TemplUtl.frame then
if type( frame ) == "table" then
TemplUtl.frame = frame;
else
TemplUtl.frame = mw.getCurrentFrame();
end
end
return TemplUtl.frame;
end -- framing()
TemplUtl.faculty = function ( analyze, another )
-- Test template arg for boolean
-- analyze -- string, boolean, number or nil
-- another -- fallback: string, boolean, or nil
-- Returns boolean
local s = type( analyze );
local r;
if s == "string" then
r = mw.text.trim( analyze );
if r == "" then
r = TemplUtl.faculty( another, nil );
elseif r:find( "1", 1, true ) and
r:match( "^[0%-]*1[01%-]*$") then
r = true;
elseif r:match( "^[0%-]+$") then
r = false;
else
r = r:lower();
if r == "y" or r == "yes" or r == "true" then
r = true;
elseif r == "n" or r == "no" or r == "false" then
r = false;
else
if not TemplUtl.L10N then
local lucky;
s = string.format( "Module:%s/local",
TemplUtl.suite );
lucky, TemplUtl.L10N = pcall( mw.loadData, s );
end
if type( TemplUtl.L10N ) == "table" then
local entry;
if not TemplUtl.lang then
-- TODO: page language
TemplUtl.lang =
mw.language.getContentLanguage():getCode();
end
entry = TemplUtl.L10N[ TemplUtl.lang ];
if type( entry ) == "table" then
s = entry[ r ];
if type( s ) == "boolean" then
r = s;
end
end
else
TemplUtl.L10N = true;
end
if type( r ) ~= "boolean" then
if type( another ) ~= "nil" then
r = TemplUtl.faculty( another );
else
r = true;
end
end
end
end
elseif s == "boolean" then
r = analyze;
elseif s == "number" then
r = ( analyze ~= 0 );
else
r = false;
end
return r;
end -- TemplUtl.faculty()
TemplUtl.failsafe = function ( assert )
local r
if not assert or assert <= TemplUtl.serial then
r = TemplUtl.serial
else
r = false
end
return r
end -- TemplUtl.failsafe()
TemplUtl.failure = function ( alert, always, addClass, frame )
-- Format error message, mostly hidden
-- alert -- string: message
-- always -- boolean, or nil: do not hide
-- addClass -- string, or nil: add classes to element
-- frame -- object, or nil
-- Returns string
local err = mw.html.create( "span" )
:addClass( "error" )
:wikitext( alert );
local live = ( framing( frame ):preprocess( "{{REVISIONID}}" )
== "" );
if type( addClass ) == "string" then
err:addClass( addClass )
end
if live then
local max = 1000000000;
local id = math.floor( os.clock() * max );
local sign = string.format( "error_%d", id );
local btn = mw.html.create( "span" );
local top = mw.html.create( "div" );
err:attr( "id", sign );
-- TODO: LTR
btn:css( { ["background"] = "#FFFF00",
["border"] = "#FF0000 3px solid",
["font-weight"] = "bold",
["padding"] = "2px",
["text-decoration"] = "none" } )
:wikitext( ">>>" );
sign = string.format( "[[#%s|%s]]", sign, tostring( btn ) );
top:wikitext( sign, " ", alert );
mw.addWarning( tostring( top:attr( "role", "alert" ) ) );
elseif not always then
err:css( { ["display"] = "none" } );
-- err:css( { ["display"] = "inline-block",
-- ["line-height"] = "0",
-- ["max-height"] = "0",
-- ["max-width"] = "0",
-- ["visibility"] = "hidden" } );
end
return tostring( err );
end -- TemplUtl.failure()
TemplUtl.fake = function ( access, frame )
-- Simulation of template transclusion
-- Precondition:
-- access -- string, or nil; page name (template)
-- frame -- object, or nil
local f = function ( a )
framing( frame ):expandTemplate{ title = a };
end
local s;
if type( access ) == "string" then
s = mw.text.trim( access );
if s == "" then
s = false;
end
end
if not s then
s = mw.title.getCurrentTitle().text;
end
pcall( f, s );
end -- TemplUtl.fake()
TemplUtl.feasible = function ( address )
-- Does this describe an URL beginning?
-- Precondition:
-- address -- string; what to inspect, URL presumed
-- Postcondition:
-- Returns true, if URL beginning
local start, r = address:match( "^%s*((%a*:?)//)" );
if start then
if r == "" then
r = true;
elseif r:sub( -1, -1 ) == ":" then
local schemes = ":ftp:ftps:http:https:";
r = ":" .. r:lower();
if schemes:find( r, 1, true ) then
r = true;
else
r = false;
end
else
r = false;
end
end
return r;
end -- TemplUtl.feasible()
TemplUtl.feed = function ( area, ahead, at, after )
-- Detect next free "|" or "}}"
-- Precondition:
-- area -- string; template transclusion
-- ahead -- string; opening element, or false
-- at -- number; byte position in area where to start
-- after -- true, if only to search for "}}"
-- Postcondition:
-- Returns
-- -- number; byte position in area
-- -- before "|" or "}}", may be at end
-- -- to continue search; ahead has been closed
-- -- true, if to be continued at number
local j = at;
local loop = true;
local c, k, r, s, seek;
if after then
seek = "[{}<]";
else
seek = "[%[%]|{}<:]";
end
while loop do
j = area:find( seek, j );
if j then
c = area:byte( j, j );
if c == 123 then -- {
k = j + 1;
if area:byte( k, k ) == 123 then
k = k + 1;
if area:byte( k, k ) == 123 then
j, loop = TemplUtl.feed( area, "{{{", k, after );
else
k = k - 1;
j, loop = TemplUtl.feed( area, "{{", k, after );
end
if not loop then
r = j;
end
end
elseif c == 125 then -- }
k = j + 1;
if area:byte( k, k ) == 125 then
if ahead == "{{" then
r = k;
break; -- while loop;
elseif ahead == "{{{" then
k = k + 1;
if area:byte( k, k ) == 125 then
r = k;
break; -- while loop;
end
elseif not ahead then
r = j - 1;
loop = false;
end
end
elseif c == 60 then -- <
k = j + 3;
if area:sub( j, k ) == "<!--" then
k = area:find( "-->", k );
if k then
j = k + 2;
end
else
local skip;
s = area:sub( j + 1 ):lower();
skip = s:match( "^%s*nowiki%s*>" );
if skip then
local n = skip:len();
n, k = s:find( "<%s*/%s*nowiki%s*>", n );
if k then
j = j + k;
else
loop = false;
end
end
end
elseif c == 124 then -- |
if not r then
r = j - 1;
end
if not ahead then
loop = false;
end
elseif c == 91 then -- [
k = j + 1;
if area:byte( k, k ) == 91 then
k = k + 1;
j, loop = TemplUtl.feed( area, "[[", k, after );
elseif TemplUtl.feasible( area:sub( k ) ) then
k = k + 3;
j, loop = TemplUtl.feed( area, "[", k, after );
end
if not loop then
r = j;
end
elseif c == 93 then -- ]
if ahead == "[" then
r = j;
break; -- while loop
elseif ahead == "[[" then
k = j + 1;
if area:byte( k, k ) == 93 then
r = k;
break; -- while loop
end
end
elseif c == 58 then -- :
s = area:sub( j + 1, j + 2 );
if s == "//" then
s = " " .. area:sub( 1, j + 2 );
s = s:match( "%s(%a+://)$" );
if s and TemplUtl.feasible( s ) then
s = area .. " ";
s = s:match( "([^%s|]+)%s", j );
if s then
k = s:find( "}}" );
if k then
j = j + k + 1;
else
j = j + s:len();
end
end
end
end
end
j = j + 1;
else
loop = false;
end
end -- while loop
if not r then
r = area:len();
end
return r, loop;
end -- TemplUtl.feed()
TemplUtl.feeder = function ( area, at )
-- Retrieve all parameters
-- Precondition:
-- area -- string; template transclusion
-- at -- optional number; byte position in area of "{{"
-- Postcondition:
-- Returns
-- -- table
-- [0] -- template, page, parser function name
-- [1] -- unnamed parameter
-- ["name"] -- named parameter
-- -- string; error message, if any, else nil
local n = 0;
local j, k, p, r, r2, s, v;
if type( at ) == "number" then
j = at + 2;
else
j = 3;
end
while true do
k = TemplUtl.feed( area, false, j );
s = area:sub( j, k );
s = s:gsub( "<!--.*-->", "" );
if n == 0 then
r = { [ 0 ] = s };
n = 1;
else
p, v = s:match( "^([^=]*)=(.*)$" );
if p then
if p:match( "^%s*%d+%s*$" ) then
p = tonumber( p );
else
p = mw.text.trim( p );
end
v = mw.text.trim( v );
else
p = n;
v = s;
n = n + 1;
end
if r[ p ] then
if r2 then
r2 = r2 .. " * ";
else
r2 = "";
end
r2 = string.format( "%s%s '%s'",
r2,
"duplicated parameter",
tostring( p ) );
end
r[ p ] = v;
end
s = area:sub( k + 1, k + 2 );
if s == "}}" then
break; -- while true
elseif s == "" then
r2 = "template not closed";
break; -- while true
end
j = k + 2;
end -- while true
return r, r2;
end -- TemplUtl.feeder()
TemplUtl.fetch = function ( area, ask )
-- Find assignment of a named template parameter
-- Precondition:
-- area -- string; template transclusion
-- ask -- string; parameter name
-- Postcondition:
-- Returns string with trimmed parameter value, or nil
-- Does not return value if template inside
local r;
local scan = string.format( "%s%s%s",
"|%s*", ask, "%s*=(.+)$" );
r = mw.ustring.match( area, scan );
if r then
local j = TemplUtl.feed( r, false, 1 );
r = r:sub( 1, j );
if r then
r = mw.text.trim( r );
if r == "" then
r = nil;
end
end
end
return r;
end -- TemplUtl.fetch()
TemplUtl.find = function ( area, access, at, alter )
-- Find next occurrence of a template
-- Precondition:
-- area -- string; where to search
-- access -- string; trimmed (template) title
-- at -- optional number; ustring position in area, if not 1
-- alter -- optional string; lowercase namespace pattern
-- "" for article
-- no colon (:)
-- Postcondition:
-- Returns ustring position of "{{" in area, or false
-- Requires:
-- fiatTitleRegExp()
local scan = string.format( "{{%s%s%s",
"([%w_%s:]*)%s*",
fiatTitleRegExp( access ),
"%s*([|}<]!?)" );
local r, space, start, suffix;
if type( at ) == "number" then
r = at;
else
r = 1;
end
while true do
r = mw.ustring.find( area, scan, r );
if r then
start, suffix = mw.ustring.match( area, scan, r );
if start then
start = mw.text.trim( start );
if start == "" then
break; -- while true
elseif alter then
if not space then
space = string.format( "^:?%s:$", alter );
end
start = mw.ustring.lower( start );
if mw.ustring.match( start, space ) then
break; -- while true
end
else
start = start:match( "^:?(.+):$" );
if start then
start = mw.ustring.lower( start );
if start == "template" then
break; -- while true
else
if not space then
space = mw.site.namespaces[ 10 ].name;
space = mw.ustring.lower( space );
end
start = start:gsub( "_", " " )
:gsub( "%s+", " " );
if start == space then
break; -- while true
end
end
end
end
else
break; -- while true
end
r = r + 2;
else
r = false;
break; -- while true
end
end -- while true
return r;
end -- TemplUtl.find()
-- finder()
-- 1 page name
-- 2 template title / page name
-- 3 4 5 6
-- more like 2
TemplUtl.flat = function ( area )
-- Remove syntax elements that hide effective syntax only
-- Precondition:
-- area -- string; wikitext to be reduced
-- Postcondition:
-- Returns cleared wikitext
local delimiters = { { "<%s*NOWIKI%s*>", "<%s*/%s*NOWIKI%s*>" },
{ "<!--", "-->", true },
{ "<%s*PRE%s*>", "<%s*/%s*PRE%s*>" },
{ "<%s*SYNTAXHIGHLIGHT[^<>]*>",
"<%s*/%s*SYNTAXHIGHLIGHT%s*>" } };
local i = 1;
local r = area;
local k, m, n;
if not TemplUtl.Delimiters then
local c, sD, sP;
TemplUtl.Delimiters = { };
for j = 1, #delimiters do
table.insert( TemplUtl.Delimiters, { } );
for ji = 1, 2 do
sD = delimiters[ j ][ ji ];
sP = "";
for js = 1, #sD, 1 do
c = sD:byte( js, js );
if c >= 65 and c <= 90 then
sP = string.format( "%s[%c%c]",
sP, c, c + 32 );
else
sP = sP .. string.char( c );
end
end -- for js
table.insert( TemplUtl.Delimiters[ j ], sP );
end -- for ji
end -- for j
end
while ( true ) do
k = false;
for j = 1, #delimiters do
m = r:find( TemplUtl.Delimiters[ j ][ 1 ],
i,
TemplUtl.Delimiters[ j ][ 3 ] );
if m and ( not k or m < k ) then
k = m;
n = j;
end
end -- for j
if k then
local s
if k > 1 then
i = k - 1;
s = r:sub( 1, i );
else
s = "";
end
j, m = r:find( TemplUtl.Delimiters[ n ][ 2 ],
k + 1,
TemplUtl.Delimiters[ n ][ 3 ] );
if m then
r = s .. r:sub( m + 1 );
else
r = s;
break; -- while true
end
else
break; -- while true
end
end -- while true
return r;
end -- TemplUtl.flat()
-- Export
local p = { };
function p.faculty( frame )
return TemplUtl.faculty( frame.args[ 1 ],
frame.args[ 2 ] ) and "1"
or "";
end -- p.faculty
function p.failure( frame )
local scream = mw.text.trim( frame.args[ 1 ] or "" );
local loud = frame.args[ 2 ];
local select = frame.args.class;
if scream == "" then
scream = "?????????";
end
if loud then
loud = TemplUtl.faculty( loud, nil );
end
return TemplUtl.failure( scream, loud, select, frame );
end -- p.failure
function p.fake( frame )
TemplUtl.fake( frame.args[ 1 ] or "", frame );
return "";
end -- p.fake
function p.isRedirect()
return mw.title.getCurrentTitle().isRedirect and "1" or "";
end -- p.isRedirect
p.failsafe = function ( frame )
-- Versioning interface
local s = type( frame )
local since
if s == "table" then
since = frame.args[ 1 ]
elseif s == "string" then
since = frame
end
if since then
since = mw.text.trim( since )
if since == "" then
since = false
end
end
return TemplUtl.failsafe( since ) or ""
end -- p.failsafe()
p.TemplUtl = function ()
return TemplUtl;
end -- p.TemplUtl()
return p;