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Add mph and km units

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This commit is contained in:
Elara 2023-08-22 19:52:41 -07:00
parent 2c16694cec
commit 54209e2191
2 changed files with 37 additions and 10 deletions
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4
cmd/tafparser/main.go
View File

@ -19,8 +19,8 @@ func init() {
func main() {
pretty := pflag.BoolP("pretty", "p", true, "Pretty-print the JSON output")
printGo := pflag.BoolP("print-go", "G", false, "Print Go code instead of JSON")
convertDist := pflag.StringP("convert-distance", "d", "", "Convert all the distances to the given unit. (valid units: sm, mi, m)")
convertSpd := pflag.StringP("convert-speed", "s", "", "Convert all the speeds to the given unit. (valid units: m/s, mps, kmh, kph, kt, kts)")
convertDist := pflag.StringP("convert-distance", "d", "", "Convert all the distances to the given unit. (valid units: mi, m, km)")
convertSpd := pflag.StringP("convert-speed", "s", "", "Convert all the speeds to the given unit. (valid units: m/s, kph, kts, mph)")
pflag.Parse()
var opts taf.Options

39
units/units.go
View File

@ -12,6 +12,7 @@ const (
MetersPerSecond Speed = "MetersPerSecond"
KilometersPerHour Speed = "KilometersPerHour"
Knots Speed = "Knots"
MilesPerHour Speed = "MilesPerHour"
)
// Convert converts a value from one unit to another
@ -29,22 +30,36 @@ func (sf Speed) Convert(st Speed, val int) int {
return int(float64(val) * 1.94384)
case sf == Knots && st == MetersPerSecond:
return int(float64(val) / 1.94384)
case sf == MilesPerHour && st == KilometersPerHour:
return int(float64(val) * 1.60934)
case sf == KilometersPerHour && st == MilesPerHour:
return int(float64(val) / 1.60934)
case sf == MilesPerHour && st == MetersPerSecond:
return int(float64(val) * 0.44704)
case sf == MetersPerSecond && st == MilesPerHour:
return int(float64(val) / 0.44704)
case sf == MilesPerHour && st == Knots:
return int(float64(val) * 0.868976)
case sf == Knots && st == MilesPerHour:
return int(float64(val) / 0.868976)
default:
return val
}
}
// ParseSpeed parses a speed value. Valid inputs include:
// mps, m/s, kmh, kph, kt, and kts.
// mps, m/s, kmh, kph, kt, kts, mph, and milesperhour.
// This function is case-insensitive.
func ParseSpeed(s string) (Speed, bool) {
switch strings.ToLower(s) {
case "m/s", "mps", "meterspersecond", "meters per second":
case "m/s", "mps", "meterspersecond", "meters per second", "metrespersecond", "metres per second":
return MetersPerSecond, true
case "kmh", "kph", "km/h", "kilometersperhour", "kilometers per hour":
case "kmh", "kph", "km/h", "kilometersperhour", "kilometers per hour", "kilometresperhour", "kilometres per hour":
return KilometersPerHour, true
case "kt", "kts", "knot", "knots":
return Knots, true
case "mph", "milesperhour", "miles per hour":
return MilesPerHour, true
default:
return "", false
}
@ -57,6 +72,7 @@ type Distance string
const (
Miles Distance = "Miles"
Meters Distance = "Meters"
Kilometers Distance = "Kilometers"
)
// Convert converts a value from one unit to another
@ -66,19 +82,30 @@ func (df Distance) Convert(dt Distance, val float64) float64 {
return val * 1609
case df == Meters && dt == Miles:
return val / 1609
case df == Kilometers && dt == Meters:
return val * 1000
case df == Meters && dt == Kilometers:
return val / 1000
case df == Miles && dt == Kilometers:
return val * 1.60934
case df == Kilometers && dt == Miles:
return val / 1.60934
default:
return val
}
}
// ParseDistance parses a speed value. Valid inputs include:
// sm, mi, and m. This function is case-insensitive.
// ParseDistance parses a distance value. Valid inputs include:
// sm, mi, m, km, and kilometers.
// This function is case-insensitive.
func ParseDistance(s string) (Distance, bool) {
switch strings.ToLower(s) {
case "sm", "mi", "mile", "miles":
return Miles, true
case "m", "meter", "meters":
case "m", "meter", "meters", "metre", "metres":
return Meters, true
case "km", "kilometer", "kilometers", "kilometre", "kilometres":
return Kilometers, true
default:
return "", false
}