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util.human.io: Add parse_duration() method to parse a duration string

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Similar logic occurs throughout various modules in the codebase. We might even
want a module:get_option_duration()??
This commit is contained in:
Matthew Wild 2023-04-07 14:14:53 +01:00
parent 2fa6a01018
commit 7dc9f9ab2a
2 changed files with 30 additions and 0 deletions
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18
spec/util_human_io_spec.lua
View file

@ -42,6 +42,24 @@ describe("util.human.io", function ()
assert.equal("räksmörgås", human_io.ellipsis("räksmörgås", 10));
end);
end);
describe("parse_duration", function ()
local function test(expected, duration)
assert.equal(expected, human_io.parse_duration(duration));
end
it("works", function ()
test(1, "1s");
test(60, "1mi");
test(60, "1min");
test(60, "1 min");
test(60, "1 minute");
test(120, "2min");
test(86400, "1d");
test(2678400, "1m");
test(2678400, "1month");
test(2678400, "1 month");
end);
end);
end);

12
util/human/io.lua
View file

@ -197,6 +197,17 @@ local function new_table(col_specs, max_width)
end, max_width;
end
local day = 86400;
local multipliers = {
d = day, w = day * 7, m = 31 * day, mo = 31 * day, y = 365.2425 * day;
s = 1, mi = 60, h = 3600
};
local function parse_duration(duration_string)
local n, m = duration_string:lower():match("(%d+)%s*([dwmy]?.?)");
if not n then return nil; end
return tonumber(n) * ( multipliers[m] or 1 );
end
return {
getchar = getchar;
getline = getline;
@ -210,4 +221,5 @@ return {
term_width = term_width;
ellipsis = ellipsis;
table = new_table;
parse_duration = parse_duration;
};