xtool/cpgithubpkg

xtool/cpgithubpkg/cpgithubpkg.go

@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 2025 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cpgithubpkg
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"slices"
+	"strings"
+
+	"github.com/goccy/go-yaml"
+	"golang.org/x/mod/semver"
+)
+
+type version struct {
+	Folder string `yaml:"folder"`
+}
+
+type config struct {
+	Versions map[string]version `yaml:"versions"`
+}
+
+type template struct {
+	FromVer string `yaml:"from"`
+	Folder  string `yaml:"folder"`
+	Tag     string `yaml:"tag,omitempty"` // pattern with *, empty if dynamic tag
+}
+
+type configEx struct {
+	PkgName  string             `yaml:"name"`
+	Versions map[string]version `yaml:"versions"`
+	Template template           `yaml:"template"`
+}
+
+// Main is the entry point for copying GitHub packages.
+func Main(pkgName string) {
+	localDir := conanRoot() + "recipes/" + pkgName + "/"
+
+	confFile := localDir + "config.yml"
+	b, err := os.ReadFile(confFile)
+	check(err)
+
+	var conf config
+	err = yaml.Unmarshal(b, &conf)
+	check(err)
+
+	tryCp := func(src map[string]any, ver string, v version) {
+		switch url := src["url"].(type) {
+		case string:
+			if pkgPath, tagPattern, ok := checkGithbPkg(url, ver); ok {
+				cpGithubPkg(pkgName, pkgPath, tagPattern, localDir, conf, ver, v)
+			}
+		case []any:
+			for _, u := range url {
+				url := u.(string)
+				if pkgPath, tagPattern, ok := checkGithbPkg(url, ver); ok {
+					cpGithubPkg(pkgName, pkgPath, tagPattern, localDir, conf, ver, v)
+				}
+			}
+		default:
+			log.Println("[INFO] skip source:", src)
+		}
+	}
+
+	conandatas := make(map[string]conandata) // folder -> conandata
+	rangeVerDesc(conf.Versions, func(ver string, v version) {
+		cd, err := getConanData(conandatas, v.Folder, localDir)
+		if err != nil {
+			if os.IsNotExist(err) {
+				return
+			}
+			check(err)
+		}
+
+		if src, ok := cd.Sources[ver]; ok {
+			switch src := src.(type) {
+			case map[string]any:
+				tryCp(src, ver, v)
+			case []any:
+				for _, u := range src {
+					tryCp(u.(map[string]any), ver, v)
+				}
+			default:
+				log.Panicln("[FATAL] source:", src)
+			}
+		}
+	})
+}
+
+func cpGithubPkg(pkgName, pkgPath, tagPattern, srcDir string, conf config, fromVer string, v version) {
+	destDir := cppkgRoot() + pkgPath
+	os.MkdirAll(destDir, os.ModePerm)
+
+	err := exec.Command("cp", "-r", srcDir, destDir).Run()
+	check(err)
+
+	confex := &configEx{
+		PkgName:  pkgName,
+		Versions: conf.Versions,
+		Template: template{
+			FromVer: fromVer,
+			Folder:  v.Folder,
+			Tag:     tagPattern,
+		},
+	}
+	b, err := yaml.Marshal(confex)
+	check(err)
+
+	err = os.WriteFile(destDir+"/config.yml", b, os.ModePerm)
+	check(err)
+
+	log.Println("[INFO] copy", pkgPath)
+	os.Exit(0)
+}
+
+func checkGithbPkg(url, ver string) (pkgPath, tagPattern string, ok bool) {
+	const githubPrefix = "https://github.com/"
+	if strings.HasPrefix(url, githubPrefix) {
+		path := url[len(githubPrefix):]
+		parts := strings.SplitN(path, "/", 3)
+		if len(parts) == 3 { // user/repo/xxx
+			if pos := strings.Index(parts[2], ver); pos >= 0 {
+				userRepo := parts[0] + "/" + parts[1]
+				at := len(githubPrefix) + len(userRepo) + 1 + pos
+				tagPattern = tagPatternOf(url, ver, at)
+				pkgPath, ok = strings.ToLower(userRepo), true
+			}
+		}
+	}
+	return
+}
+
+func tagPatternOf(url, ver string, at int) (tagPattern string) {
+	var tag string
+	if pos := strings.LastIndexByte(url[:at], '/'); pos >= 0 {
+		last := at + len(ver)
+		left := url[last:]
+		if end, ok := checkTagEnd(left); ok {
+			pos++
+			tag = url[pos:last]
+			tagPattern = url[pos:at] + end
+		}
+	}
+	if tag == "" {
+		log.Println("[INFO] dynamic tag found:", url)
+	}
+	return
+}
+
+func checkTagEnd(left string) (end string, ok bool) {
+	if n := len(left); n > 0 {
+		if left[0] == '/' {
+			return "*", true
+		}
+		if n >= 4 && left[0] == '.' {
+			ext := left[1:4]
+			return "*", ext == "tar" || ext == "zip" || ext == "tgz"
+		}
+		if strings.HasPrefix(left, "-stable.") {
+			return "*-stable", true
+		}
+	}
+	return "", false
+}
+
+type conandata struct {
+	Sources map[string]any `yaml:"sources"`
+}
+
+func getConanData(conandatas map[string]conandata, folder, localDir string) (ret conandata, err error) {
+	if v, ok := conandatas[folder]; ok {
+		return v, nil
+	}
+	file := localDir + folder + "/conandata.yml"
+	b, err := os.ReadFile(file)
+	if err != nil {
+		return
+	}
+	if err = yaml.Unmarshal(b, &ret); err != nil {
+		return
+	}
+	conandatas[folder] = ret
+	return
+}
+
+func rangeVerDesc[V any](data map[string]V, f func(string, V)) {
+	keys := make([]string, 0, len(data))
+	for k := range data {
+		keys = append(keys, "v"+k)
+	}
+	semver.Sort(keys)
+	for _, k := range slices.Backward(keys) {
+		k = k[1:] // remove 'v'
+		f(k, data[k])
+	}
+}
+
+func conanRoot() string {
+	home, _ := os.UserHomeDir()
+	return home + "/conan-center-index/"
+}
+
+func cppkgRoot() string {
+	home, _ := os.UserHomeDir()
+	return home + "/cppkg/"
+}
+
+func check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

xtool/cppkg/cppkg.go

@@ -25,9 +25,9 @@ const (
 	DefaultFlags = IndexAutoUpdate | ToolQuietInstall
 )
 
-// Main is the main entry point for the cppkg package.
+// Install installs a package with the given name and version.
 // pkgAndVer: 7bitcoder/7bitconf@1.2.0
-func Main(pkgAndVer string, flags int) {
+func Install(pkgAndVer string, flags int) {
 	pkgPath, ver := parsePkgVer(pkgAndVer)
 	if ver == "" {
 		panic("TODO: get latest version")