feat: add command for arbitrary URLs (#137)

* feat: install command for direct downloads

* use sha1 instead of sha256

* apply suggestions

* feat: parse urls instead of using hasprefix

* stop by default and add force flag

* Implement various fixes and improvements

Co-authored-by: Tricked <72335827+SkyBlockDev@users.noreply.github.com>
Co-authored-by: comp500 <comp500@users.noreply.github.com>

core/mod.go

@@ -6,6 +6,8 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"regexp"
+	"strings"
 )
 
 // Mod stores metadata about a mod. This is written to a TOML file for each mod.
@@ -44,7 +46,7 @@ type ModOption struct {
 }
 
 // The three possible values of Side (the side that the mod is on) are "server", "client", and "both".
-//noinspection GoUnusedConst
+// noinspection GoUnusedConst
 const (
 	ServerSide    = "server"
 	ClientSide    = "client"
@@ -129,3 +131,19 @@ func (m Mod) GetFilePath() string {
 func (m Mod) GetDestFilePath() string {
 	return filepath.Join(filepath.Dir(m.metaFile), filepath.FromSlash(m.FileName))
 }
+
+var slugifyRegex1 = regexp.MustCompile("\\(.*\\)")
+var slugifyRegex2 = regexp.MustCompile(" - .+")
+var slugifyRegex3 = regexp.MustCompile("[^a-z\\d]")
+var slugifyRegex4 = regexp.MustCompile("-+")
+var slugifyRegex5 = regexp.MustCompile("^-|-$")
+
+func SlugifyName(name string) string {
+	lower := strings.ToLower(name)
+	noBrackets := slugifyRegex1.ReplaceAllString(lower, "")
+	noSuffix := slugifyRegex2.ReplaceAllString(noBrackets, "")
+	limitedChars := slugifyRegex3.ReplaceAllString(noSuffix, "-")
+	noDuplicateDashes := slugifyRegex4.ReplaceAllString(limitedChars, "-")
+	noLeadingTrailingDashes := slugifyRegex5.ReplaceAllString(noDuplicateDashes, "")
+	return noLeadingTrailingDashes
+}