podman/libpod/util.go

package libpod

import (
	"fmt"
	"os"
	"path/filepath"
	"strings"
	"time"
)

// Runtime API constants
const (
	// DefaultTransport is a prefix that we apply to an image name
	// to check docker hub first for the image
	DefaultTransport = "docker://"
)

// WriteFile writes a provided string to a provided path
func WriteFile(content string, path string) error {
	baseDir := filepath.Dir(path)
	if baseDir != "" {
		if _, err := os.Stat(path); err != nil {
			return err
		}
	}
	f, err := os.Create(path)
	if err != nil {
		return err
	}
	defer f.Close()
	f.WriteString(content)
	f.Sync()
	return nil
}

// StringInSlice determines if a string is in a string slice, returns bool
func StringInSlice(s string, sl []string) bool {
	for _, i := range sl {
		if i == s {
			return true
		}
	}
	return false
}

// FuncTimer helps measure the execution time of a function
// For debug purposes, do not leave in code
// used like defer FuncTimer("foo")
func FuncTimer(funcName string) {
	elapsed := time.Since(time.Now())
	fmt.Printf("%s executed in %d ms\n", funcName, elapsed)
}

// hasTransport determines if the image string contains '://', returns bool
func hasTransport(image string) bool {
	return strings.Contains(image, "://")
}