89 lines
2.8 KiB
V
89 lines
2.8 KiB
V
// This is free and unencumbered software released into the public domain.
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// Anyone is free to copy, modify, publish, use, compile, sell, or
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// distribute this software, either in source code form or as a compiled
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// binary, for any purpose, commercial or non-commercial, and by any
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// means.
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// In jurisdictions that recognize copyright laws, the author or authors
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// of this software dedicate any and all copyright interest in the
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// software to the public domain. We make this dedication for the benefit
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// of the public at large and to the detriment of our heirs and
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// successors. We intend this dedication to be an overt act of
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// relinquishment in perpetuity of all present and future rights to this
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// software under copyright law.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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// For more information, please refer to <https://unlicense.org/>
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/*
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dataunit - a simple CLI tool for data units convertion.
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*/
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module main
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import os
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import flag
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import dataunits
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@[name: 'dataunit']
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struct FlagConfig {
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help bool
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from string @[short: f]
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to string @[short: t]
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mut:
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value f64 @[ignore]
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}
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fn main() {
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mut flags, no_matches := flag.to_struct[FlagConfig](os.args, skip: 1, style: .v) or {
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eprintln('cmdline parsing error, see -help for info')
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exit(2)
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}
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if no_matches.len > 1 {
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eprintln('unrecognized arguments: ${no_matches[1..]}')
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exit(2)
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} else if no_matches.len == 1 {
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flags.value = no_matches[0].f64()
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}
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if flags.help {
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println('convert the value between data size units.')
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println('usage: dataunit -f <unit> -t <unit> <value>')
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println('options:')
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println(' -help print this help message and exit')
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println(' -f, -from source data unit')
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println(' -t, -to destination data unit')
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exit(0)
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}
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if flags.from == '' || flags.to == '' {
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eprintln('no -from or -to flag set, see -help for info')
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exit(2)
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}
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if flags.value == 0 {
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eprintln('no value passed, see -help for info')
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exit(2)
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}
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src := dataunits.from_string(flags.from, case_insensitive: true) or {
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eprintln('invalid source unit: ${err}')
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exit(1)
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}
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dst := dataunits.from_string(flags.to, case_insensitive: true) or {
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eprintln('invalid destination unit: ${err}')
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exit(1)
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}
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result := '${dataunits.convert(flags.value, src, dst):.20f}'
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splitted := result.split('.')
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if splitted[1].contains_only('0') {
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println(splitted[0])
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} else {
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println(result.trim_right('0'))
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}
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}
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