Implemented os specific task file support

read_taskfile.go

@@ -0,0 +1,58 @@
+package task
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"runtime"
+
+	"github.com/BurntSushi/toml"
+	"github.com/imdario/mergo"
+	"gopkg.in/yaml.v2"
+)
+
+func readTaskfile() (map[string]*Task, error) {
+	initialTasks, err := readTaskfileData(TaskFilePath)
+	if err != nil {
+		return nil, err
+	}
+	mergeTasks, err := readTaskfileData(fmt.Sprintf("%s_%s", TaskFilePath, runtime.GOOS))
+	if err != nil {
+		switch err.(type) {
+		default:
+			return nil, err
+		case taskFileNotFound:
+			return initialTasks, nil
+		}
+	}
+	if err := mergo.MapWithOverwrite(&initialTasks, mergeTasks); err != nil {
+		return nil, err
+	}
+	return initialTasks, nil
+}
+
+func readTaskfileData(path string) (tasks map[string]*Task, err error) {
+	if b, err := ioutil.ReadFile(path + ".yml"); err == nil {
+		return tasks, yaml.Unmarshal(b, &tasks)
+	}
+	if b, err := ioutil.ReadFile(path + ".json"); err == nil {
+		return tasks, json.Unmarshal(b, &tasks)
+	}
+	if b, err := ioutil.ReadFile(path + ".toml"); err == nil {
+		return tasks, toml.Unmarshal(b, &tasks)
+	}
+	return nil, taskFileNotFound{path}
+}
+
+func exists(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return true, err
+}