Add CRAN package registry

custom/conf/app.example.ini

@@ -2500,6 +2500,8 @@ ROUTER = console
 ;LIMIT_SIZE_CONDA = -1
 ;; Maximum size of a Container upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 ;LIMIT_SIZE_CONTAINER = -1
+;; Maximum size of a CRAN upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
+;LIMIT_SIZE_CRAN = -1
 ;; Maximum size of a Generic upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 ;LIMIT_SIZE_GENERIC = -1
 ;; Maximum size of a Helm upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -1246,6 +1246,7 @@ Task queue configuration has been moved to `queue.task`. However, the below conf
 - `LIMIT_SIZE_CONAN`: **-1**: Maximum size of a Conan upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_CONDA`: **-1**: Maximum size of a Conda upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_CONTAINER`: **-1**: Maximum size of a Container upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
+- `LIMIT_SIZE_CRAN`: **-1**: Maximum size of a CRAN upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_GENERIC`: **-1**: Maximum size of a Generic upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_HELM`: **-1**: Maximum size of a Helm upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_MAVEN`: **-1**: Maximum size of a Maven upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)

docs/content/doc/packages/cran.en-us.md

@@ -0,0 +1,96 @@
+---
+date: "2023-01-01T00:00:00+00:00"
+title: "CRAN Packages Repository"
+slug: "packages/cran"
+draft: false
+toc: false
+menu:
+  sidebar:
+    parent: "packages"
+    name: "CRAN"
+    weight: 35
+    identifier: "cran"
+---
+
+# CRAN Packages Repository
+
+Publish [CRAN](https://cran.r-project.org/) packages for your user or organization.
+
+**Table of Contents**
+
+{{< toc >}}
+
+## Requirements
+
+To work with the CRAN package registry, you need to install [the R toolset](https://cran.r-project.org/).
+
+## Configuring the package registry
+
+To register the package registry you need to add it in your `Rprofile.site` file:
+
+```
+local({
+	r <- list("gitea" = "https://gitea.example.com/api/packages/{owner}/cran")
+	options(repos = r)
+})
+```
+
+| Parameter | Description |
+| --------- | ----------- |
+| `owner`   | The owner of the package. |
+
+If you need to provide credentials, you may embed them as part of the url (`https://user:password@gitea.example.com/...`).
+
+## Publish a package
+
+To publish a package, perform a HTTP PUT operation with the package content in the request body.
+
+Source packages:
+
+```
+PUT https://gitea.example.com/api/packages/{owner}/cran/src
+```
+
+| Parameter | Description |
+| --------- | ----------- |
+| `owner`   | The owner of the package. |
+
+Binary packages:
+
+```
+PUT https://gitea.example.com/api/packages/{owner}/cran/bin?platform={platform}&rversion={rversion}
+```
+
+| Parameter  | Description |
+| ---------- | ----------- |
+| `owner`    | The owner of the package. |
+| `platform` | The name of the platform. |
+| `rversion` | The R version of the binary. |
+
+For example:
+
+```shell
+curl --user your_username:your_password_or_token \
+     --upload-file path/to/package.zip \
+     https://gitea.example.com/api/packages/testuser/cran/bin?platform=windows&rversion=4.2
+```
+
+You cannot publish a package if a package of the same name and version already exists. You must delete the existing package first.
+
+## Install a package
+
+To install a CRAN package from the package registry, execute the following command:
+
+```shell
+install.packages({package_name})
+```
+
+| Parameter      | Description |
+| -------------- | ----------- |
+| `package_name` | The package name. |
+
+For example:
+
+```shell
+install.packages("testpackage")
+```

docs/content/doc/packages/overview.en-us.md

@@ -32,6 +32,7 @@ The following package managers are currently supported:
 | [Conan]({{< relref "doc/packages/conan.en-us.md" >}}) | C++ | `conan` |
 | [Conda]({{< relref "doc/packages/conda.en-us.md" >}}) | - | `conda` |
 | [Container]({{< relref "doc/packages/container.en-us.md" >}}) | - | any OCI compliant client |
+| [CRAN]({{< relref "doc/packages/cran.en-us.md" >}}) | R | - |
 | [Generic]({{< relref "doc/packages/generic.en-us.md" >}}) | - | any HTTP client |
 | [Helm]({{< relref "doc/packages/helm.en-us.md" >}}) | - | any HTTP client, `cm-push` |
 | [Maven]({{< relref "doc/packages/maven.en-us.md" >}}) | Java | `mvn`, `gradle` |

models/packages/cran/search.go

@@ -0,0 +1,90 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package cran
+
+import (
+	"context"
+	"strconv"
+	"strings"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/packages"
+	cran_module "code.gitea.io/gitea/modules/packages/cran"
+
+	"xorm.io/builder"
+)
+
+type SearchOptions struct {
+	OwnerID  int64
+	FileType string
+	Platform string
+	RVersion string
+	Filename string
+}
+
+func (opts *SearchOptions) toConds() builder.Cond {
+	var cond builder.Cond = builder.Eq{
+		"package.type":                packages.TypeCran,
+		"package.owner_id":            opts.OwnerID,
+		"package_version.is_internal": false,
+	}
+
+	if opts.Filename != "" {
+		cond = cond.And(builder.Eq{"package_file.lower_name": strings.ToLower(opts.Filename)})
+	}
+
+	var propsCond builder.Cond = builder.Eq{
+		"package_property.ref_type": packages.PropertyTypeFile,
+	}
+	propsCond = propsCond.And(builder.Expr("package_property.ref_id = package_file.id"))
+
+	count := 1
+	propsCondBlock := builder.Eq{"package_property.name": cran_module.PropertyType}.And(builder.Eq{"package_property.value": opts.FileType})
+
+	if opts.Platform != "" {
+		count += 2
+		propsCondBlock = propsCondBlock.
+			Or(builder.Eq{"package_property.name": cran_module.PropertyPlatform}.And(builder.Eq{"package_property.value": opts.Platform})).
+			Or(builder.Eq{"package_property.name": cran_module.PropertyRVersion}.And(builder.Eq{"package_property.value": opts.RVersion}))
+	}
+
+	propsCond = propsCond.And(propsCondBlock)
+
+	cond = cond.And(builder.Eq{
+		strconv.Itoa(count): builder.Select("COUNT(*)").Where(propsCond).From("package_property"),
+	})
+
+	return cond
+}
+
+func SearchLatestVersions(ctx context.Context, opts *SearchOptions) ([]*packages.PackageVersion, error) {
+	sess := db.GetEngine(ctx).
+		Table("package_version").
+		Select("package_version.*").
+		Join("LEFT", "package_version pv2", builder.Expr("package_version.package_id = pv2.package_id AND pv2.is_internal = ? AND (package_version.created_unix < pv2.created_unix OR (package_version.created_unix = pv2.created_unix AND package_version.id < pv2.id))", false)).
+		Join("INNER", "package", "package.id = package_version.package_id").
+		Join("INNER", "package_file", "package_file.version_id = package_version.id").
+		Where(opts.toConds().And(builder.Expr("pv2.id IS NULL"))).
+		Asc("package.name")
+
+	pvs := make([]*packages.PackageVersion, 0, 10)
+	return pvs, sess.Find(&pvs)
+}
+
+func SearchFile(ctx context.Context, opts *SearchOptions) (*packages.PackageFile, error) {
+	sess := db.GetEngine(ctx).
+		Table("package_version").
+		Select("package_file.*").
+		Join("INNER", "package", "package.id = package_version.package_id").
+		Join("INNER", "package_file", "package_file.version_id = package_version.id").
+		Where(opts.toConds())
+
+	pf := &packages.PackageFile{}
+	if has, err := sess.Get(pf); err != nil {
+		return nil, err
+	} else if !has {
+		return nil, packages.ErrPackageFileNotExist
+	}
+	return pf, nil
+}

models/packages/descriptor.go

@@ -17,6 +17,7 @@ import (
 	"code.gitea.io/gitea/modules/packages/conan"
 	"code.gitea.io/gitea/modules/packages/conda"
 	"code.gitea.io/gitea/modules/packages/container"
+	"code.gitea.io/gitea/modules/packages/cran"
 	"code.gitea.io/gitea/modules/packages/helm"
 	"code.gitea.io/gitea/modules/packages/maven"
 	"code.gitea.io/gitea/modules/packages/npm"
@@ -144,6 +145,8 @@ func GetPackageDescriptor(ctx context.Context, pv *PackageVersion) (*PackageDesc
 		metadata = &conda.VersionMetadata{}
 	case TypeContainer:
 		metadata = &container.Metadata{}
+	case TypeCran:
+		metadata = &cran.Metadata{}
 	case TypeGeneric:
 		// generic packages have no metadata
 	case TypeHelm:

models/packages/package.go

@@ -36,6 +36,7 @@ const (
 	TypeConan     Type = "conan"
 	TypeConda     Type = "conda"
 	TypeContainer Type = "container"
+	TypeCran      Type = "cran"
 	TypeGeneric   Type = "generic"
 	TypeHelm      Type = "helm"
 	TypeMaven     Type = "maven"
@@ -55,6 +56,7 @@ var TypeList = []Type{
 	TypeConan,
 	TypeConda,
 	TypeContainer,
+	TypeCran,
 	TypeGeneric,
 	TypeHelm,
 	TypeMaven,
@@ -82,6 +84,8 @@ func (pt Type) Name() string {
 		return "Conda"
 	case TypeContainer:
 		return "Container"
+	case TypeCran:
+		return "CRAN"
 	case TypeGeneric:
 		return "Generic"
 	case TypeHelm:
@@ -121,6 +125,8 @@ func (pt Type) SVGName() string {
 		return "gitea-conda"
 	case TypeContainer:
 		return "octicon-container"
+	case TypeCran:
+		return "gitea-cran"
 	case TypeGeneric:
 		return "octicon-package"
 	case TypeHelm: