To truncate or limit the length of a file path using the path package in Golang, you can use the path.Base function along with some string manipulation. Here's an example of how you can do it:
package main
import (
"fmt"
"path"
"strings"
)
func truncatePath(filePath string, maxLength int) string {
// Get the file name from the file path
fileName := path.Base(filePath)
// Check if the file name length is greater than the maximum length
if len(fileName) > maxLength {
// Truncate the file name to the maximum length
fileName = fileName[:maxLength]
// Replace any file extension with an empty string
fileName = strings.TrimSuffix(fileName, path.Ext(fileName))
}
// Join the truncated file name with the directory path
truncatedPath := path.Join(path.Dir(filePath), fileName)
return truncatedPath
}
func main() {
filePath := "/path/to/a/very/long/file_name_with_a_really_long_extension.txt"
maxLength := 20
truncatedPath := truncatePath(filePath, maxLength)
fmt.Println(truncatedPath)
}
In this example, the truncatePath function takes the file path and maximum length as input parameters and returns the truncated path. It first extracts the file name from the file path using the path.Base function. If the length of the file name is greater than the maximum length, it truncates the file name and removes any file extension. Finally, it joins the truncated file name with the directory path using path.Join and returns the result.