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