// Copyright 2022 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package conan import (	"fmt"	"regexp"	"strings" 	"forgejo.org/modules/log"	"forgejo.org/modules/util") const (	// taken from https://github.com/conan-io/conan/blob/develop/conans/model/ref.py	minChars = 2	maxChars = 51 	// DefaultRevision if no revision is specified	DefaultRevision = "0") var (	namePattern     = regexp.MustCompile(fmt.Sprintf(`^[a-zA-Z0-9_][a-zA-Z0-9_\+\.-]{%d,%d}$`, minChars-1, maxChars-1))	revisionPattern = regexp.MustCompile(fmt.Sprintf(`^[a-zA-Z0-9]{1,%d}$`, maxChars)) 	ErrValidation = util.NewInvalidArgumentErrorf("could not validate one or more reference fields")) // RecipeReference represents a recipe <Name>/<Version>@<User>/<Channel>#<Revision>type RecipeReference struct {	Name     string	Version  string	User     string	Channel  string	Revision string} func NewRecipeReference(name, version, user, channel, revision string) (*RecipeReference, error) {	log.Trace("Conan Recipe: %s/%s(@%s/%s(#%s))", name, version, user, channel, revision) 	if user == "_" {		user = ""	}	if channel == "_" {		channel = ""	} 	if (user != "" && channel == "") || (user == "" && channel != "") {		return nil, ErrValidation	} 	if !namePattern.MatchString(name) {		return nil, ErrValidation	} 	v := strings.TrimSpace(version)	if v == "" {		return nil, ErrValidation	}	if user != "" && !namePattern.MatchString(user) {		return nil, ErrValidation	}	if channel != "" && !namePattern.MatchString(channel) {		return nil, ErrValidation	}	if revision != "" && !revisionPattern.MatchString(revision) {		return nil, ErrValidation	} 	return &RecipeReference{name, v, user, channel, revision}, nil} func (r *RecipeReference) RevisionOrDefault() string {	if r.Revision == "" {		return DefaultRevision	}	return r.Revision} func (r *RecipeReference) String() string {	rev := ""	if r.Revision != "" {		rev = "#" + r.Revision	}	if r.User == "" || r.Channel == "" {		return fmt.Sprintf("%s/%s%s", r.Name, r.Version, rev)	}	return fmt.Sprintf("%s/%s@%s/%s%s", r.Name, r.Version, r.User, r.Channel, rev)} func (r *RecipeReference) LinkName() string {	user := r.User	if user == "" {		user = "_"	}	channel := r.Channel	if channel == "" {		channel = "_"	}	return fmt.Sprintf("%s/%s/%s/%s/%s", r.Name, r.Version, user, channel, r.RevisionOrDefault())} func (r *RecipeReference) WithRevision(revision string) *RecipeReference {	return &RecipeReference{r.Name, r.Version, r.User, r.Channel, revision}} // AsKey builds the additional key for the package filefunc (r *RecipeReference) AsKey() string {	return fmt.Sprintf("%s|%s|%s", r.User, r.Channel, r.RevisionOrDefault())} // PackageReference represents a package of a recipe <Name>/<Version>@<User>/<Channel>#<Revision> <Reference>#<Revision>type PackageReference struct {	Recipe    *RecipeReference	Reference string	Revision  string} func NewPackageReference(recipe *RecipeReference, reference, revision string) (*PackageReference, error) {	log.Trace("Conan Package: %v %s(#%s)", recipe, reference, revision) 	if recipe == nil {		return nil, ErrValidation	}	if reference == "" || !revisionPattern.MatchString(reference) {		return nil, ErrValidation	}	if revision != "" && !revisionPattern.MatchString(revision) {		return nil, ErrValidation	} 	return &PackageReference{recipe, reference, revision}, nil} func (r *PackageReference) RevisionOrDefault() string {	if r.Revision == "" {		return DefaultRevision	}	return r.Revision} func (r *PackageReference) LinkName() string {	return fmt.Sprintf("%s/%s", r.Reference, r.RevisionOrDefault())} func (r *PackageReference) WithRevision(revision string) *PackageReference {	return &PackageReference{r.Recipe, r.Reference, revision}} // AsKey builds the additional key for the package filefunc (r *PackageReference) AsKey() string {	return fmt.Sprintf("%s|%s|%s|%s|%s", r.Recipe.User, r.Recipe.Channel, r.Recipe.RevisionOrDefault(), r.Reference, r.RevisionOrDefault())}