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convert_helper.go
103 lines (85 loc) · 1.76 KB
/
convert_helper.go
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package binding
import (
"strconv"
"strings"
"github.com/Jaeel/fyne"
"github.com/Jaeel/fyne/storage"
)
func stripFormatPrecision(in string) string {
// quick exit if certainly not float
if !strings.ContainsAny(in, "f") {
return in
}
start := -1
end := -1
runes := []rune(in)
for i, r := range runes {
switch r {
case '%':
if i > 0 && start == i-1 { // ignore %%
start = -1
} else {
start = i
}
case 'f':
if start == -1 { // not part of format
continue
}
end = i
}
if end > -1 {
break
}
}
if end == start+1 { // no width/precision
return in
}
sizeRunes := runes[start+1 : end]
width, err := parseFloat(string(sizeRunes))
if err != nil {
return string(runes[:start+1]) + string(runes[:end])
}
if sizeRunes[0] == '.' { // formats like %.2f
return string(runes[:start+1]) + string(runes[end:])
}
return string(runes[:start+1]) + strconv.Itoa(int(width)) + string(runes[end:])
}
func uriFromString(in string) (fyne.URI, error) {
return storage.ParseURI(in)
}
func uriToString(in fyne.URI) (string, error) {
if in == nil {
return "", nil
}
return in.String(), nil
}
func parseBool(in string) (bool, error) {
out, err := strconv.ParseBool(in)
if err != nil {
return false, err
}
return out, nil
}
func parseFloat(in string) (float64, error) {
out, err := strconv.ParseFloat(in, 64)
if err != nil {
return 0, err
}
return out, nil
}
func parseInt(in string) (int, error) {
out, err := strconv.ParseInt(in, 0, 64)
if err != nil {
return 0, err
}
return int(out), nil
}
func formatBool(in bool) string {
return strconv.FormatBool(in)
}
func formatFloat(in float64) string {
return strconv.FormatFloat(in, 'f', 6, 64)
}
func formatInt(in int) string {
return strconv.FormatInt(int64(in), 10)
}