Add configuration files for styles, keybindings and other options

src/config.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"gopkg.in/yaml.v3"
+	"log"
+	"os"
+	"path"
+)
+
+type TyperConfig struct {
+	SelectedStyle  string `yaml:"selected_style,omitempty"`
+	FallbackStyle  string `yaml:"fallback_style,omitempty"`
+	TabIndentation int    `yaml:"tab_indentation,omitempty"`
+}
+
+var Config TyperConfig
+
+func readConfig() {
+	Config = TyperConfig{
+		SelectedStyle:  "default",
+		FallbackStyle:  "default-fallback",
+		TabIndentation: 4,
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		log.Fatalf("Could not get home directory: %s", err)
+	}
+
+	if _, err := os.Stat(path.Join(homeDir, ".config/typer/config.yml")); err == nil {
+		data, err := os.ReadFile(path.Join(homeDir, ".config/typer/config.yml"))
+		if err != nil {
+			log.Fatalf("Could not read config.yml: %s", err)
+		}
+		err = yaml.Unmarshal(data, &Config)
+		if err != nil {
+			log.Fatalf("Could not unmarshal config.yml: %s", err)
+		}
+	} else if _, err := os.Stat("/etc/typer/config.yml"); err == nil {
+		reader, err := os.Open("/etc/typer/config.yml")
+		if err != nil {
+			log.Fatalf("Could not read config.yml: %s", err)
+		}
+		err = yaml.NewDecoder(reader).Decode(&Config)
+		if err != nil {
+			log.Fatalf("Could not read config.yml: %s", err)
+		}
+		reader.Close()
+	}
+
+	// Validate config options
+	if Config.TabIndentation < 1 {
+		Config.TabIndentation = 1
+	}
+}