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util.go
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util.go
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/*
* SPDX-License-Identifier: GPL-3.0
* Vencord Installer, a cross platform gui/cli app for installing Vencord
* Copyright (c) 2023 Vendicated and Vencord contributors
*/
package main
import (
"errors"
"os"
"runtime"
"strings"
"syscall"
)
func SliceMap[T, U any](arr []T, mapper func(T) U) []U {
result := make([]U, len(arr))
for i := range arr {
result[i] = mapper(arr[i])
}
return result
}
func SliceIndexFunc[T any](slice []T, fn func(T) bool) int {
for i, e := range slice {
if fn(e) {
return i
}
}
return -1
}
func SliceIndex[T comparable](slice []T, item T) int {
return SliceIndexFunc(slice, func(e T) bool {
return e == item
})
}
func SliceContainsFunc[T any](slice []T, fn func(T) bool) bool {
return SliceIndexFunc(slice, fn) != -1
}
func SliceContains[T comparable](slice []T, item T) bool {
return SliceIndex(slice, item) != -1
}
func ExistsFile(path string) bool {
_, err := os.Stat(path)
Log.Debug("Checking if", path, "exists:", Ternary(err == nil, "Yes", "No"))
return err == nil
}
func IsDirectory(path string) bool {
s, err := os.Stat(path)
if err != nil {
Log.Error("Error while checking if", path, "is directory:", err)
return false
}
Log.Debug("Checking if", path, "is directory:", Ternary(s.IsDir(), "Yes", "No"))
return s.IsDir()
}
func Ternary[T any](b bool, ifTrue, ifFalse T) T {
if b {
return ifTrue
}
return ifFalse
}
var branches = []string{"canary", "development", "ptb"}
func GetBranch(name string) string {
name = strings.ToLower(name)
for _, branch := range branches {
if strings.HasSuffix(name, branch) {
return branch
}
}
return "stable"
}
func Ptr[T any](v T) *T {
return &v
}
func CheckIfErrIsCauseItsBusyRn(err error) error {
if runtime.GOOS != "windows" {
return err
}
// bruhhhh
if linkError, ok := err.(*os.LinkError); ok {
if errno, ok := linkError.Err.(syscall.Errno); ok && errno == 32 /* ERROR_SHARING_VIOLATION */ {
return errors.New(
"Cannot patch because Discord's files are used by a different process." +
"\nMake sure you close Discord before trying to patch!",
)
}
}
return err
}
func Prepend[T any](slice []T, elems ...T) []T {
return append(elems, slice...)
}