54 lines
1.4 KiB
Scheme
54 lines
1.4 KiB
Scheme
;;
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;; util-format.scm
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;;
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;; Less-common formatting functions.
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;;
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;; ISC License
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;;
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;; Copyright 2023 Brmlab, z.s.
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;; Dominik Pantůček <dominik.pantucek@trustica.cz>
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;;
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;; Permission to use, copy, modify, and/or distribute this software
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;; for any purpose with or without fee is hereby granted, provided
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;; that the above copyright notice and this permission notice appear
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;; in all copies.
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;;
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;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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;;
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(declare (unit util-format))
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(module
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util-format
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(
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format-amount
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)
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(import scheme
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(chicken string)
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(chicken format))
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;; Formats amount in currency
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(define (format-amount amt)
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(if amt
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(let* ((str (number->string amt))
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(flds (string-split str "."))
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(integer? (null? (cdr flds))))
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(if (or integer?
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(string=? (cadr flds) "0"))
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(format "~A.--" (car flds))
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(format "~A.~A"
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(car flds)
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(substring
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(string-append (cadr flds) "0")
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0 2))))
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"ERR.OR"))
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)
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