Move log to user owned directory

README.md

@@ -89,7 +89,8 @@ If the pacman database is older than 24 hours, it is automatically refreshed.
 
 ### Logging
 
-Operations are logged to `/var/log/declpac.log`.
+Operation are logged to `$XDG_STATE_HOME/declpac.log`
+(or `~/.local/state/declpac.log` on fallback)
 
 ## Troubleshooting
 

pkg/input/input.go

@@ -6,6 +6,8 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+
+	"github.com/Riyyi/declpac/pkg/lib"
 )
 
 var ErrEmptyList = errors.New("package list is empty")
@@ -28,7 +30,7 @@ func ReadPackages(stateFiles []string) (map[string]bool, error) {
 	packages := make(map[string]bool)
 
 	for _, file := range stateFiles {
-		expanded := expandPath(file)
+		expanded := lib.ExpandPath(file)
 		if err := readStateFile(expanded, packages); err != nil {
 			return nil, err
 		}
@@ -51,27 +53,17 @@ func ReadPackages(stateFiles []string) (map[string]bool, error) {
 // -----------------------------------------
 // private
 
-func expandPath(path string) string {
-	if strings.HasPrefix(path, "~/") {
-		home, err := os.UserHomeDir()
-		if err != nil {
-			return path
-		}
-		return filepath.Join(home, path[2:])
-	}
-	return path
-}
-
 func fileExists(path string) bool {
 	_, err := os.Stat(path)
 	return err == nil
 }
 
 func getImplicitStateFile() string {
-	cfgDir, _ := os.UserConfigDir()
+	cfgDir := os.Getenv("XDG_CONFIG_HOME")
 	if cfgDir == "" {
 		cfgDir = "~/.config"
 	}
+	cfgDir = lib.ExpandPath(cfgDir)
 	return filepath.Join(cfgDir, "declpac")
 }
 

pkg/lib/lib.go

@@ -0,0 +1,21 @@
+package lib
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// -----------------------------------------
+// public
+
+func ExpandPath(path string) string {
+	if strings.HasPrefix(path, "~/") {
+		home, err := os.UserHomeDir()
+		if err != nil {
+			return path
+		}
+		return filepath.Join(home, path[2:])
+	}
+	return path
+}

pkg/log/log.go

@@ -8,6 +8,8 @@ import (
 	"path/filepath"
 	"strings"
 	"time"
+
+	"github.com/Riyyi/declpac/pkg/lib"
 )
 
 var logFile *os.File
@@ -41,11 +43,18 @@ func GetLogWriter() io.Writer {
 }
 
 func OpenLog() error {
-	logPath := filepath.Join("/var/log", "declpac.log")
+	stateDir := os.Getenv("XDG_STATE_HOME")
+	if stateDir == "" {
+		stateDir = "~/.local/state"
+	}
+	stateDir = lib.ExpandPath(stateDir)
+
+	logPath := filepath.Join(stateDir, "declpac.log")
 	f, err := os.OpenFile(logPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
 	if err != nil {
 		return err
 	}
+
 	logFile = f
 	writeTimestamp()
 	return nil