OnlineLibrary

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package util
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import (
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	"encoding/xml"
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	"fmt"
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	"os"
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	"strings"
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	"time"
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)
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// Replaces all forbidden characters in s string with sign "_"
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func ReplaceForbiddenCharacters(s string) string {
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	chars := []string{"/", "\\", "?", "%", "*", ":", "|", "\"", "<", ">"}
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	for _, ch := range chars {
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		s = strings.ReplaceAll(s, ch, "_")
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	}
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	return s
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}
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// Formatting duration as HH:MM:SS
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func FmtDuration(d time.Duration) string {
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	h := d / time.Hour
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	m := (d % time.Hour) / time.Minute
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	s := (d % time.Minute) / time.Second
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	return fmt.Sprintf("%02d:%02d:%02d", int(h), int(m), int(s))
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}
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// Parsing of duration from string HH:MM:SS
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func ParseDuration(s string) (time.Duration, error) {
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	var hh, mm, ss time.Duration
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	_, err := fmt.Sscanf(s, "%d:%d:%d", &hh, &mm, &ss)
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	if err != nil {
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		return 0, err
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	}
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	return time.Hour*hh + time.Minute*mm + time.Second*ss, nil
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}
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// StringInSlice checks if a string exists in the specified slice of strings
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func StringInSlice(str string, slc []string) bool {
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	for _, s := range slc {
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		if str == s {
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			return true
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		}
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	}
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	return false
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}
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// FileIsExist checks that path points to an existing file with the specified size
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func FileIsExist(path string, size int64) bool {
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	if info, err := os.Stat(path); err == nil {
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		if !info.IsDir() && info.Size() == size {
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			return true
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		}
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	}
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	return false
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}
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func SaveXMLFile(path string, v any) error {
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	f, err := CreateSecureFile(path)
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	if err != nil {
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		return err
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	}
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	enc := xml.NewEncoder(f)
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	enc.Indent("", "\t") // for readability
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	err = enc.Encode(v)
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	if err == nil {
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		err = enc.Close()
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	}
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	if err != nil {
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		f.Corrupted()
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		f.Close()
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		return err
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	}
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	return f.Close()
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}
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