feat: add find-provides and find-requires (rpm only)

pkg/build/findDeps.go

@@ -0,0 +1,77 @@
+package build
+
+import (
+	"bytes"
+	"context"
+	"os/exec"
+	"path"
+	"strings"
+
+	"github.com/goreleaser/nfpm/v2"
+	"plemya-x.ru/alr/internal/types"
+	"plemya-x.ru/alr/pkg/loggerctx"
+)
+
+func rpmFindDependencies(ctx context.Context, pkgInfo *nfpm.Info, dirs types.Directories, command string, updateFunc func(string)) error {
+	log := loggerctx.From(ctx)
+
+	if _, err := exec.LookPath(command); err != nil {
+		log.Info("Command not found on the system").Str("command", command).Send()
+		return nil
+	}
+
+	var paths []string
+	for _, content := range pkgInfo.Contents {
+		if content.Type != "dir" {
+			paths = append(paths,
+				path.Join(dirs.PkgDir, content.Destination),
+			)
+		}
+	}
+
+	if len(paths) == 0 {
+		return nil
+	}
+
+	cmd := exec.Command(command)
+	cmd.Stdin = bytes.NewBufferString(strings.Join(paths, "\n"))
+	cmd.Env = append(cmd.Env,
+		"RPM_BUILD_ROOT="+dirs.PkgDir,
+		"RPM_FINDPROV_METHOD=",
+		"RPM_FINDREQ_METHOD=",
+		"RPM_DATADIR=",
+		"RPM_SUBPACKAGE_NAME=",
+	)
+	var out bytes.Buffer
+	var stderr bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return err
+	}
+
+	dependencies := strings.Split(strings.TrimSpace(out.String()), "\n")
+	for _, dep := range dependencies {
+		updateFunc(dep)
+	}
+
+	return nil
+}
+
+func rpmFindProvides(ctx context.Context, pkgInfo *nfpm.Info, dirs types.Directories) error {
+	log := loggerctx.From(ctx)
+
+	return rpmFindDependencies(ctx, pkgInfo, dirs, "/usr/lib/rpm/find-provides", func(dep string) {
+		log.Info("Provided dependency found").Str("dep", dep).Send()
+		pkgInfo.Overridables.Provides = append(pkgInfo.Overridables.Provides, dep)
+	})
+}
+
+func rpmFindRequires(ctx context.Context, pkgInfo *nfpm.Info, dirs types.Directories) error {
+	log := loggerctx.From(ctx)
+
+	return rpmFindDependencies(ctx, pkgInfo, dirs, "/usr/lib/rpm/find-requires", func(dep string) {
+		log.Info("Required dependency found").Str("dep", dep).Send()
+		pkgInfo.Overridables.Depends = append(pkgInfo.Overridables.Depends, dep)
+	})
+}