Added a very basic argument system, a simple installation and removal system and the bpm test package

package_utils.go

@@ -5,6 +5,7 @@ import (
 	"bufio"
 	"compress/gzip"
 	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path"
@@ -17,6 +18,7 @@ type packageInfo struct {
 	name        string
 	description string
 	version     string
+	pkgType     string
 	depends     []string
 	provides    []string
 }
@@ -62,6 +64,9 @@ func readPackageInfo(contents string) (*packageInfo, error) {
 	pkgInfo := packageInfo{}
 	lines := strings.Split(contents, "\n")
 	for num, line := range lines {
+		if len(strings.TrimSpace(line)) == 0 {
+			continue
+		}
 		split := strings.SplitN(line, ":", 2)
 		if len(split) != 2 {
 			return nil, errors.New("invalid pkg.info format at line " + strconv.Itoa(num))
@@ -75,6 +80,8 @@ func readPackageInfo(contents string) (*packageInfo, error) {
 			pkgInfo.description = split[1]
 		case "version":
 			pkgInfo.version = split[1]
+		case "type":
+			pkgInfo.pkgType = split[1]
 		}
 	}
 	return &pkgInfo, nil
@@ -85,6 +92,7 @@ func createInfoFile(pkgInfo packageInfo) string {
 	ret = ret + "name: " + pkgInfo.name + "\n"
 	ret = ret + "description: " + pkgInfo.description + "\n"
 	ret = ret + "version: " + pkgInfo.version + "\n"
+	ret = ret + "type: " + pkgInfo.pkgType + "\n"
 	return ret
 }
 
@@ -198,7 +206,7 @@ func installPackage(filename, installDir string) error {
 	return nil
 }
 
-func getInstalledPackages(rootDir string) ([]string, error) {
+func getInstalledPackages() ([]string, error) {
 	dataDir := path.Join(rootDir, "var/lib/bpm/installed/")
 	items, err := os.ReadDir(dataDir)
 	if os.IsNotExist(err) {
@@ -235,3 +243,66 @@ func getPackageFiles(pkg string) []string {
 	}
 	return ret
 }
+
+func getPackageInfo(pkg string) *packageInfo {
+	dataDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(dataDir, pkg)
+	files := path.Join(pkgDir, "info")
+	if _, err := os.Stat(dataDir); os.IsNotExist(err) {
+		return nil
+	}
+	if _, err := os.Stat(pkgDir); os.IsNotExist(err) {
+		return nil
+	}
+	file, err := os.Open(files)
+	if err != nil {
+		return nil
+	}
+	bs, err := io.ReadAll(file)
+	if err != nil {
+		return nil
+	}
+	info, err := readPackageInfo(string(bs))
+	if err != nil {
+		return nil
+	}
+	return info
+}
+
+func removePackage(pkg string) error {
+	dataDir := path.Join(rootDir, "var/lib/bpm/installed/")
+	pkgDir := path.Join(dataDir, pkg)
+	files := getPackageFiles(pkg)
+	for _, file := range files {
+		file = path.Join(rootDir, file)
+		stat, err := os.Stat(file)
+		if err != nil {
+			return err
+		}
+		if stat.IsDir() {
+			dir, err := os.ReadDir(file)
+			if err != nil {
+				return err
+			}
+			if len(dir) == 0 {
+				fmt.Println("Removing: " + file)
+				err := os.Remove(file)
+				if err != nil {
+					return err
+				}
+			}
+		} else {
+			fmt.Println("Removing: " + file)
+			err := os.Remove(file)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	err := os.RemoveAll(pkgDir)
+	if err != nil {
+		return err
+	}
+	fmt.Println("Removing: " + pkgDir)
+	return nil
+}