mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Scribunto
synced 2024-12-18 19:02:27 +00:00
4dcac2fcd9
The Lua manual says this: For this function, a '^' at the start of a pattern does not work as an anchor, as this would prevent the iteration. I had interpreted that to mean that a pattern starting with '^' would never match in gmatch. But further testing reveals that the '^' is just treated as a literal character: string.gmatch( "foo ^bar baz", "^%a+" ) will match "^bar". Change-Id: Id91d6ee2db753ce1d6a4f6ae27764691d9e9fdc4
86 lines
2 KiB
Lua
86 lines
2 KiB
Lua
-- Get a fresh copy of the basic ustring
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local old_ustring = package.loaded.ustring
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package.loaded.ustring = nil
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local ustring = require( 'ustring' )
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package.loaded.ustring = old_ustring
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old_ustring = nil
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local util = require 'libraryUtil'
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local checkType = util.checkType
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local gmatch_init = nil
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local gmatch_callback = nil
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local function php_gmatch( s, pattern )
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checkType( 'gmatch', 1, s, 'string' )
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checkType( 'gmatch', 2, pattern, 'string' )
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local re, capt = gmatch_init( s, pattern )
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local pos = 0
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return function()
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local ret
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pos, ret = gmatch_callback( s, re, capt, pos )
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return unpack( ret )
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end, nil, nil
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end
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function ustring.setupInterface( opt )
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-- Boilerplate
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ustring.setupInterface = nil
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-- Set string limits
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ustring.maxStringLength = opt.stringLengthLimit
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ustring.maxPatternLength = opt.patternLengthLimit
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-- Gmatch
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if mw_interface.gmatch_callback and mw_interface.gmatch_init then
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gmatch_init = mw_interface.gmatch_init
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gmatch_callback = mw_interface.gmatch_callback
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ustring.gmatch = php_gmatch
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end
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mw_interface.gmatch_init = nil
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mw_interface.gmatch_callback = nil
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-- Replace pure-lua implementation with php callbacks
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local nargs = {
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char = 0,
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find = 2,
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match = 2,
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gsub = 3,
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}
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for k, v in pairs( mw_interface ) do
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local n = nargs[k] or 1
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if n == 0 then
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ustring[k] = v
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else
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-- Avoid PHP warnings for missing arguments by checking before
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-- calling PHP.
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ustring[k] = function ( ... )
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if select( '#', ... ) < n then
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error( "too few arguments to mw.ustring." .. k, 2 )
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end
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return v( ... )
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end
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end
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end
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mw_interface = nil
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-- Replace upper/lower with mw.language versions if available
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if mw and mw.language then
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local lang = mw.language.getContentLanguage()
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ustring.upper = function ( s )
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return lang:uc( s )
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end
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ustring.lower = function ( s )
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return lang:lc( s )
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end
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end
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-- Register this library in the "mw" global
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mw = mw or {}
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mw.ustring = ustring
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package.loaded['mw.ustring'] = ustring
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end
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return ustring
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