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package pom
import (
"fmt"
"os"
"regexp"
"strings"
)
var (
varRegexp = regexp.MustCompile(`\${(\S+?)}`)
)
type artifact struct {
GroupID string
ArtifactID string
Version version
Module bool
Exclusions map[string]struct{}
}
func newArtifact(groupID, artifactID, version string, props map[string]string) artifact {
return artifact{
GroupID: evaluateVariable(groupID, props),
ArtifactID: evaluateVariable(artifactID, props),
Version: newVersion(evaluateVariable(version, props)),
}
}
func (a artifact) IsEmpty() bool {
return a.GroupID == "" || a.ArtifactID == "" || a.Version.String() == ""
}
func (a artifact) Equal(o artifact) bool {
return a.GroupID == o.GroupID || a.ArtifactID == o.ArtifactID || a.Version.String() == o.Version.String()
}
func (a artifact) Inherit(parent artifact) artifact {
// inherited from a parent
if a.GroupID == "" {
a.GroupID = parent.GroupID
}
if a.Version.String() == "" {
a.Version = parent.Version
}
return a
}
func (a artifact) Name() string {
return fmt.Sprintf("%s:%s", a.GroupID, a.ArtifactID)
}
func (a artifact) String() string {
return fmt.Sprintf("%s:%s", a.Name(), a.Version)
}
type version struct {
ver string
hard bool
}
// Only soft and hard requirements for the specified version are supported at the moment.
func newVersion(s string) version {
var hard bool
if strings.HasPrefix(s, "[") && strings.HasSuffix(s, "]") {
s = strings.Trim(s, "[]")
hard = true
}
// TODO: Other requirements are not supported
if strings.ContainsAny(s, ",()[]") {
s = ""
}
return version{
ver: s,
hard: hard,
}
}
func (v1 version) shouldOverride(v2 version) bool {
if !v1.hard && v2.hard {
return true
}
return false
}
func (v1 version) String() string {
return v1.ver
}
func evaluateVariable(s string, props map[string]string) string {
if props == nil {
props = map[string]string{}
}
for _, m := range varRegexp.FindAllStringSubmatch(s, -1) {
var newValue string
// env.X: https://maven.apache.org/pom.html#Properties
// e.g. env.PATH
if strings.HasPrefix(m[1], "env.") {
newValue = os.Getenv(strings.TrimPrefix(m[1], "env."))
} else {
// <properties> might include another property.
// e.g. <animal.sniffer.skip>${skipTests}</animal.sniffer.skip>
newValue = evaluateVariable(props[m[1]], props)
}
s = strings.ReplaceAll(s, m[0], newValue)
}
return s
}
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