Mercurial > prosody-hg
diff util/xtemplate.lua @ 13394:6debd8dd12ab
util.xtemplate: Adopt {-path-} syntax to strip preceding and/or trailing whitespace
Seen in some other template languages
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sat, 09 Dec 2023 14:57:41 +0100 |
| parents | d10957394a3c |
| children | 1f93e4f78c53 |
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--- a/util/xtemplate.lua Wed Dec 06 23:52:45 2023 +0100 +++ b/util/xtemplate.lua Sat Dec 09 14:57:41 2023 +0100 @@ -8,8 +8,16 @@ local function render(template, root, escape, filters) escape = escape or st.xml_escape; - return (s_gsub(template, "%b{}", function(block) + return (s_gsub(template, "(%s*)(%b{})(%s*)", function(pre_blank, block, post_blank) local inner = s_sub(block, 2, -2); + if inner:sub(1, 1) == "-" then + pre_blank = ""; + inner = inner:sub(2); + end + if inner:sub(-1, -1) == "-" then + post_blank = ""; + inner = inner:sub(1, -2); + end local path, pipe, pos = s_match(inner, "^([^|]+)(|?)()"); if not (type(path) == "string") then return end local value @@ -74,12 +82,12 @@ if type(value) == "string" then if not is_escaped then value = escape(value); end - return value + return pre_blank .. value .. post_blank elseif st.is_stanza(value) then value = value:get_text(); - if value then return escape(value) end + if value then return pre_blank .. escape(value) .. post_blank end end - return "" + return pre_blank .. post_blank end)) end