From dd136858f1ea40ad3c94191d647487fa4f31926c Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel@debian.org>
Date: Fri, 18 Oct 2024 20:33:49 +0200
Subject: Adding upstream version 9.0.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>
---
 modules/packages/cargo/parser.go | 169 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 169 insertions(+)
 create mode 100644 modules/packages/cargo/parser.go

(limited to 'modules/packages/cargo/parser.go')

diff --git a/modules/packages/cargo/parser.go b/modules/packages/cargo/parser.go
new file mode 100644
index 0000000..36cd44d
--- /dev/null
+++ b/modules/packages/cargo/parser.go
@@ -0,0 +1,169 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package cargo
+
+import (
+	"encoding/binary"
+	"errors"
+	"io"
+	"regexp"
+
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/validation"
+
+	"github.com/hashicorp/go-version"
+)
+
+const PropertyYanked = "cargo.yanked"
+
+var (
+	ErrInvalidName    = errors.New("package name is invalid")
+	ErrInvalidVersion = errors.New("package version is invalid")
+)
+
+// Package represents a Cargo package
+type Package struct {
+	Name        string
+	Version     string
+	Metadata    *Metadata
+	Content     io.Reader
+	ContentSize int64
+}
+
+// Metadata represents the metadata of a Cargo package
+type Metadata struct {
+	Dependencies     []*Dependency       `json:"dependencies,omitempty"`
+	Features         map[string][]string `json:"features,omitempty"`
+	Authors          []string            `json:"authors,omitempty"`
+	Description      string              `json:"description,omitempty"`
+	DocumentationURL string              `json:"documentation_url,omitempty"`
+	ProjectURL       string              `json:"project_url,omitempty"`
+	Readme           string              `json:"readme,omitempty"`
+	Keywords         []string            `json:"keywords,omitempty"`
+	Categories       []string            `json:"categories,omitempty"`
+	License          string              `json:"license,omitempty"`
+	RepositoryURL    string              `json:"repository_url,omitempty"`
+	Links            string              `json:"links,omitempty"`
+}
+
+type Dependency struct {
+	Name            string   `json:"name"`
+	Req             string   `json:"req"`
+	Features        []string `json:"features"`
+	Optional        bool     `json:"optional"`
+	DefaultFeatures bool     `json:"default_features"`
+	Target          *string  `json:"target"`
+	Kind            string   `json:"kind"`
+	Registry        *string  `json:"registry"`
+	Package         *string  `json:"package"`
+}
+
+var nameMatch = regexp.MustCompile(`\A[a-zA-Z][a-zA-Z0-9-_]{0,63}\z`)
+
+// ParsePackage reads the metadata and content of a package
+func ParsePackage(r io.Reader) (*Package, error) {
+	var size uint32
+	if err := binary.Read(r, binary.LittleEndian, &size); err != nil {
+		return nil, err
+	}
+
+	p, err := parsePackage(io.LimitReader(r, int64(size)))
+	if err != nil {
+		return nil, err
+	}
+
+	if err := binary.Read(r, binary.LittleEndian, &size); err != nil {
+		return nil, err
+	}
+
+	p.Content = io.LimitReader(r, int64(size))
+	p.ContentSize = int64(size)
+
+	return p, nil
+}
+
+func parsePackage(r io.Reader) (*Package, error) {
+	var meta struct {
+		Name string `json:"name"`
+		Vers string `json:"vers"`
+		Deps []struct {
+			Name               string   `json:"name"`
+			VersionReq         string   `json:"version_req"`
+			Features           []string `json:"features"`
+			Optional           bool     `json:"optional"`
+			DefaultFeatures    bool     `json:"default_features"`
+			Target             *string  `json:"target"`
+			Kind               string   `json:"kind"`
+			Registry           *string  `json:"registry"`
+			ExplicitNameInToml string   `json:"explicit_name_in_toml"`
+		} `json:"deps"`
+		Features      map[string][]string `json:"features"`
+		Authors       []string            `json:"authors"`
+		Description   string              `json:"description"`
+		Documentation string              `json:"documentation"`
+		Homepage      string              `json:"homepage"`
+		Readme        string              `json:"readme"`
+		ReadmeFile    string              `json:"readme_file"`
+		Keywords      []string            `json:"keywords"`
+		Categories    []string            `json:"categories"`
+		License       string              `json:"license"`
+		LicenseFile   string              `json:"license_file"`
+		Repository    string              `json:"repository"`
+		Links         string              `json:"links"`
+	}
+	if err := json.NewDecoder(r).Decode(&meta); err != nil {
+		return nil, err
+	}
+
+	if !nameMatch.MatchString(meta.Name) {
+		return nil, ErrInvalidName
+	}
+
+	if _, err := version.NewSemver(meta.Vers); err != nil {
+		return nil, ErrInvalidVersion
+	}
+
+	if !validation.IsValidURL(meta.Homepage) {
+		meta.Homepage = ""
+	}
+	if !validation.IsValidURL(meta.Documentation) {
+		meta.Documentation = ""
+	}
+	if !validation.IsValidURL(meta.Repository) {
+		meta.Repository = ""
+	}
+
+	dependencies := make([]*Dependency, 0, len(meta.Deps))
+	for _, dep := range meta.Deps {
+		dependencies = append(dependencies, &Dependency{
+			Name:            dep.Name,
+			Req:             dep.VersionReq,
+			Features:        dep.Features,
+			Optional:        dep.Optional,
+			DefaultFeatures: dep.DefaultFeatures,
+			Target:          dep.Target,
+			Kind:            dep.Kind,
+			Registry:        dep.Registry,
+		})
+	}
+
+	return &Package{
+		Name:    meta.Name,
+		Version: meta.Vers,
+		Metadata: &Metadata{
+			Dependencies:     dependencies,
+			Features:         meta.Features,
+			Authors:          meta.Authors,
+			Description:      meta.Description,
+			DocumentationURL: meta.Documentation,
+			ProjectURL:       meta.Homepage,
+			Readme:           meta.Readme,
+			Keywords:         meta.Keywords,
+			Categories:       meta.Categories,
+			License:          meta.License,
+			RepositoryURL:    meta.Repository,
+			Links:            meta.Links,
+		},
+	}, nil
+}
-- 
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