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-- Single-tool form: a Lua file under `tools/` returns one registration
-- table, and panto registers it as if `panto.ext.register_tool` had been
-- called on the value. Drop this file into one of:
-- ${XDG_CONFIG_HOME:-$HOME/.config}/panto/tools/wc.lua (user-global)
-- ./.panto/tools/wc.lua (project-local)
--
-- Or use the directory form `<somewhere>/tools/wc/init.lua` if you want
-- to `require` sibling modules from the same directory.
return {
name = "wc",
description = "Count bytes, characters, words, and lines in a string. " ..
"Like `wc`, but operates on text passed in directly rather than on files.",
schema = {
type = "object",
properties = {
text = {
type = "string",
description = "The text to measure.",
},
},
required = { "text" },
},
handler = function(input)
local text = input.text
local bytes = #text
-- UTF-8 character count: utf8.len returns nil on invalid sequences;
-- fall back to byte count in that case so we always return something.
local chars = utf8.len(text) or bytes
local _, words = text:gsub("%S+", "")
local _, newlines = text:gsub("\n", "")
-- Match `wc -l` semantics: count newlines, not lines. A trailing
-- non-newline-terminated line is *not* counted, matching wc(1).
return string.format(
"bytes=%d chars=%d words=%d lines=%d",
bytes, chars, words, newlines
)
end,
}
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