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language.go
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language.go
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package model
import (
"fmt"
"strings"
)
type Language string
const (
Lan_None Language = ""
Lan_Java Language = "Java"
Lan_JavaScript Language = "JavaScript"
Lan_Php Language = "Php"
Lan_Ruby Language = "Ruby"
Lan_Golang Language = "Golang"
Lan_Rust Language = "Rust"
Lan_Erlang Language = "Erlang"
Lan_Python Language = "Python"
)
var purlRmap = map[string]Language{
"cargo": Lan_Rust,
"composer": Lan_Php,
"gem": Lan_Ruby,
"golang": Lan_Golang,
"maven": Lan_Java,
"npm": Lan_JavaScript,
"pypi": Lan_Python,
}
var purlMap = map[Language]string{}
func init() {
for k, v := range purlRmap {
purlMap[v] = k
}
}
func Purl(vendor, name, version string, language Language) string {
pkg := ""
if g, ok := purlMap[language]; ok {
pkg = g
}
if vendor == "" {
return fmt.Sprintf("pkg:%s/%s@%s", pkg, name, version)
}
return fmt.Sprintf("pkg:%s/%s/%s@%s", pkg, vendor, name, version)
}
func ParsePurl(purl string) (vendor, name, version string, language Language) {
// purl示例 pkg:maven/org.apache.xmlgraphics/batik-anim@1.9.1?packaging=sources
if i := strings.LastIndex(purl, "?"); i != -1 {
purl = purl[:i]
}
if i := strings.Index(purl, "/"); i == -1 {
return
} else {
if pkg := strings.Split(purl[:i], `:`); len(pkg) != 2 {
return
} else {
if l, ok := purlRmap[pkg[1]]; ok {
language = l
}
}
purl = purl[i+1:]
}
if i := strings.LastIndex(purl, "@"); i == -1 {
return
} else {
version = purl[i+1:]
name = purl[:i]
}
if language == Lan_Java {
if i := strings.LastIndex(name, "/"); i != -1 {
vendor = name[:i]
name = name[i+1:]
}
}
return
}