app-init

internal/config/path.go

@@ -0,0 +1,62 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// ResolveConfigPath finds config.yaml: --config, then next to the exe, then cwd.
+func ResolveConfigPath(flagPath string) (string, error) {
+	var cands []string
+	if flagPath != "" {
+		cands = append(cands, flagPath)
+	}
+	if exe, err := os.Executable(); err == nil {
+		dir := filepath.Dir(exe)
+		cands = append(cands, filepath.Join(dir, "config.yaml"))
+		cands = append(cands, filepath.Join(dir, "..", "config.yaml"))
+	}
+	cands = append(cands, "config.yaml")
+	seen := map[string]bool{}
+	for _, p := range cands {
+		abs, err := filepath.Abs(p)
+		if err != nil {
+			continue
+		}
+		abs = filepath.Clean(abs)
+		if seen[abs] {
+			continue
+		}
+		seen[abs] = true
+		st, err := os.Stat(abs)
+		if err == nil && !st.IsDir() {
+			return abs, nil
+		}
+	}
+	if flagPath == "" {
+		flagPath = "config.yaml"
+	}
+	abs, err := filepath.Abs(flagPath)
+	if err != nil {
+		return flagPath, fmt.Errorf("config not found: %s", flagPath)
+	}
+	return abs, fmt.Errorf("config not found: %s", abs)
+}
+
+// ResolvePaths makes LogFile absolute relative to the config file directory.
+func (c *Config) ResolvePaths() {
+	if c == nil {
+		return
+	}
+	if p, err := filepath.Abs(c.Path); err == nil {
+		c.Path = p
+	}
+	if c.LogFile == "" {
+		c.LogFile = DefaultLogFile
+	}
+	if !filepath.IsAbs(c.LogFile) {
+		c.LogFile = filepath.Join(filepath.Dir(c.Path), c.LogFile)
+	}
+	c.LogFile = filepath.Clean(c.LogFile)
+}