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