mirror of
https://github.com/kovidgoyal/kitty.git
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41 lines
803 B
Go
41 lines
803 B
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package at
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import (
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"fmt"
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"strconv"
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"strings"
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)
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func parse_scroll_amount(amt string) ([]any, error) {
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var ans = make([]any, 2)
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if amt == "start" || amt == "end" {
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ans[0] = amt
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ans[1] = nil
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} else {
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pages := strings.Contains(amt, "p")
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unscroll := strings.Contains(amt, "u")
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var mult float64 = 1
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if strings.HasSuffix(amt, "-") && !unscroll {
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mult = -1
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}
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q, err := strconv.ParseFloat(strings.TrimRight(amt, "+-plu"), 64)
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if err != nil {
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return ans, err
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}
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if !pages && q != float64(int(q)) {
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return ans, fmt.Errorf("The number must be an integer")
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}
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ans[0] = q * mult
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if pages {
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ans[1] = "p"
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} else if unscroll {
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ans[1] = "u"
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} else {
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ans[1] = "l"
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}
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}
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return ans, nil
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}
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