83 lines
1.2 KiB
Go
83 lines
1.2 KiB
Go
package txt
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Numeric removes non-numeric characters from a string and returns the result.
|
|
func Numeric(s string) string {
|
|
if s == "" {
|
|
return ""
|
|
}
|
|
|
|
sep := '.'
|
|
|
|
if c := strings.Count(s, "."); c == 0 || c > 1 {
|
|
sep = ','
|
|
}
|
|
|
|
// Remove invalid characters.
|
|
s = strings.Map(func(r rune) rune {
|
|
if r == sep {
|
|
return '.'
|
|
} else if r == '-' {
|
|
return '-'
|
|
} else if r < '0' || r > '9' {
|
|
return -1
|
|
}
|
|
|
|
return r
|
|
}, s)
|
|
|
|
return s
|
|
}
|
|
|
|
// IsFloat checks if the string represents a floating point number.
|
|
func IsFloat(s string) bool {
|
|
if s == "" {
|
|
return false
|
|
}
|
|
|
|
s = strings.TrimSpace(s)
|
|
|
|
for _, r := range s {
|
|
if r != '.' && r != ',' && (r < '0' || r > '9') {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// Float converts a string to a 64-bit floating point number or 0 if invalid.
|
|
func Float(s string) float64 {
|
|
if s == "" {
|
|
return 0
|
|
}
|
|
|
|
f, err := strconv.ParseFloat(Numeric(s), 64)
|
|
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
|
|
return f
|
|
}
|
|
|
|
// Int64 converts a string to a signed 64-bit integer or 0 if invalid.
|
|
func Int64(s string) int64 {
|
|
if s == "" {
|
|
return 0
|
|
}
|
|
|
|
i := strings.SplitN(Numeric(s), ".", 2)
|
|
|
|
result, err := strconv.ParseInt(i[0], 10, 64)
|
|
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
|
|
return result
|
|
}
|