Initial commit

fonts/fonts.go

@@ -0,0 +1,49 @@
+package fonts
+
+import (
+	"os"
+	"os/user"
+	"path/filepath"
+	"strings"
+)
+
+// Find looks up font file location by the name.
+func Find(name string) (string, error) {
+	// Normalize font file name
+	fileName := strings.Replace(name, " ", "-", -1) + ".ttf"
+
+	for _, dir := range fontDirs() {
+		dir, err := expandHome(dir)
+		if err != nil {
+			return "", err
+		}
+
+		path := filepath.Join(dir, fileName)
+		if fileExist(path) {
+			return path, nil
+		}
+	}
+
+	return "", nil
+}
+
+func expandHome(path string) (string, error) {
+	if !strings.HasPrefix(path, "~/") {
+		return path, nil
+	}
+
+	u, err := user.Current()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(u.HomeDir, path[2:]), nil
+}
+
+func fileExist(path string) bool {
+	if _, err := os.Stat(path); err != nil {
+		if os.IsNotExist(err) {
+			return false
+		}
+	}
+	return true
+}

fonts/fonts_darwin.go

@@ -0,0 +1,13 @@
+// +build darwin
+
+package fonts
+
+// Docs: https://support.apple.com/en-us/HT201722
+func fontDirs() []string {
+	return []string{
+		".",                     // Current directory
+		"~/Library/Fonts",       // User
+		"/Library/Fonts",        // Local
+		"/System/Library/Fonts", // System
+	}
+}

fonts/fonts_fallback.go

@@ -0,0 +1,9 @@
+// +build !linux,!darwin
+
+package fonts
+
+func fontDirs() []string {
+	return []string{
+		".", // Current directory
+	}
+}

fonts/fonts_linux.go

@@ -0,0 +1,15 @@
+// +build linux
+
+package fonts
+
+func fontDirs() []string {
+	return []string{
+		".",                             // Current directory
+		"~/.fonts",                      // User
+		"~/.fonts/truetype",             // User
+		"~/.local/share/fonts",          // User
+		"~/.local/share/fonts/truetype", // User
+		"/usr/share/fonts",              // System
+		"/usr/share/fonts/truetype",     // System
+	}
+}