| package main |
| |
| import ( |
| "path/filepath" |
| "runtime" |
| "strings" |
| ) |
| |
| // driveLetterToUpper converts Windows path's drive letters to uppercase. This |
| // is needed when comparing 2 paths with different drive letter case. |
| func driveLetterToUpper(path string) string { |
| if runtime.GOOS != "windows" || path == "" { |
| return path |
| } |
| |
| p := path |
| |
| // If path's drive letter is lowercase, change it to uppercase. |
| if len(p) >= 2 && p[1] == ':' && 'a' <= p[0] && p[0] <= 'z' { |
| p = string(p[0]+'A'-'a') + p[1:] |
| } |
| |
| return p |
| } |
| |
| // clean the path and ensure that a drive letter is upper case (if it exists). |
| func cleanPath(path string) string { |
| return driveLetterToUpper(filepath.Clean(path)) |
| } |
| |
| // deal with case insensitive filesystems and other weirdness |
| func pathEqual(a, b string) bool { |
| a = cleanPath(a) |
| b = cleanPath(b) |
| return strings.EqualFold(a, b) |
| } |
