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Module:String2: Difference between revisions
revert encoding output of hyphen2dash
Richardpruen (talk | contribs) m (1 revision imported: Template for journal ) |
(revert encoding output of hyphen2dash) |
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--[[--------------------------< H Y P H E N _ T O _ D A S H >-------------------------------------------------- | |||
Converts a hyphen to a dash under certain conditions. The hyphen must separate | |||
like items; unlike items are returned unmodified. These forms are modified: | |||
letter - letter (A - B) | |||
digit - digit (4-5) | |||
digit separator digit - digit separator digit (4.1-4.5 or 4-1-4-5) | |||
letterdigit - letterdigit (A1-A5) (an optional separator between letter and | |||
digit is supported – a.1-a.5 or a-1-a-5) | |||
digitletter - digitletter (5a - 5d) (an optional separator between letter and | |||
digit is supported – 5.a-5.d or 5-a-5-d) | |||
any other forms are returned unmodified. | |||
str may be a comma- or semicolon-separated list | |||
]] | |||
function p.hyphen_to_dash( str ) | |||
if (str == nil or str == '') then | |||
return str; | |||
end | |||
local accept; | |||
str = mw.text.decode(str, true ) -- replace html entities with their characters; semicolon mucks up the text.split | |||
local out = {}; | |||
local list = mw.text.split (str, '%s*[,;]%s*'); -- split str at comma or semicolon separators if there are any | |||
for _, item in ipairs (list) do -- for each item in the list | |||
item = mw.text.trim(item) -- trim whitespace | |||
item, accept = item:gsub ('^%(%((.+)%)%)$', '%1'); | |||
if accept == 0 and mw.ustring.match (item, '^%w*[%.%-]?%w+%s*[%-–—]%s*%w*[%.%-]?%w+$') then -- if a hyphenated range or has endash or emdash separators | |||
if item:match ('^%a+[%.%-]?%d+%s*%-%s*%a+[%.%-]?%d+$') or -- letterdigit hyphen letterdigit (optional separator between letter and digit) | |||
item:match ('^%d+[%.%-]?%a+%s*%-%s*%d+[%.%-]?%a+$') or -- digitletter hyphen digitletter (optional separator between digit and letter) | |||
item:match ('^%d+[%.%-]%d+%s*%-%s*%d+[%.%-]%d+$') or -- digit separator digit hyphen digit separator digit | |||
item:match ('^%d+%s*%-%s*%d+$') or -- digit hyphen digit | |||
item:match ('^%a+%s*%-%s*%a+$') then -- letter hyphen letter | |||
item = item:gsub ('(%w*[%.%-]?%w+)%s*%-%s*(%w*[%.%-]?%w+)', '%1–%2'); -- replace hyphen, remove extraneous space characters | |||
else | |||
item = mw.ustring.gsub (item, '%s*[–—]%s*', '–'); -- for endash or emdash separated ranges, replace em with en, remove extraneous whitespace | |||
end | |||
end | |||
table.insert (out, item); -- add the (possibly modified) item to the output table | |||
end | |||
local temp_str = table.concat (out, ', '); -- concatenate the output table into a comma separated string | |||
temp_str, accept = temp_str:gsub ('^%(%((.+)%)%)$', '%1'); -- remove accept-this-as-written markup when it wraps all of concatenated out | |||
if accept ~= 0 then | |||
temp_str = str:gsub ('^%(%((.+)%)%)$', '%1'); -- when global markup removed, return original str; do it this way to suppress boolean second return value | |||
return temp_str; | |||
else | |||
return temp_str; -- else, return assembled temp_str | |||
end | |||
end | |||
function p.hyphen2dash( frame ) | |||
local str = frame.args[1] or '' | |||
return p.hyphen_to_dash(str) | |||
end | end | ||
return p | return p | ||