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 | package pngstructure
import (
    "os"
    "path"
    "github.com/dsoprea/go-logging"
)
var (
    assetsPath = ""
)
func getModuleRootPath() string {
    moduleRootPath := os.Getenv("PNG_MODULE_ROOT_PATH")
    if moduleRootPath != "" {
        return moduleRootPath
    }
    currentWd, err := os.Getwd()
    log.PanicIf(err)
    currentPath := currentWd
    visited := make([]string, 0)
    for {
        tryStampFilepath := path.Join(currentPath, ".MODULE_ROOT")
        _, err := os.Stat(tryStampFilepath)
        if err != nil && os.IsNotExist(err) != true {
            log.Panic(err)
        } else if err == nil {
            break
        }
        visited = append(visited, tryStampFilepath)
        currentPath = path.Dir(currentPath)
        if currentPath == "/" {
            log.Panicf("could not find module-root: %v", visited)
        }
    }
    return currentPath
}
func getTestAssetsPath() string {
    if assetsPath == "" {
        moduleRootPath := getModuleRootPath()
        assetsPath = path.Join(moduleRootPath, "assets")
    }
    return assetsPath
}
func getTestBasicImageFilepath() string {
    assetsPath := getTestAssetsPath()
    return path.Join(assetsPath, "libpng.png")
}
func getTestExifImageFilepath() string {
    assetsPath := getTestAssetsPath()
    return path.Join(assetsPath, "exif.png")
}
 |