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lib/version/version.go
62 строки
2 KB
albertony
Fix lint issues reported by staticcheck
13 июн 2022, 22:13
13 июн 2022, 22:13
ec11759
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// Package version provides machinery for versioning file names // with a timestamp-based version string package version import ( "path" "regexp" "strings" "time" ) const versionFormat = "-v2006-01-02-150405.000" var versionRegexp = regexp.MustCompile(`-v\d{4}-\d{2}-\d{2}-\d{6}-\d{3}`) // Split fileName into base and extension so that base + ext == fileName func splitExt(fileName string) (base, ext string) { ext = path.Ext(fileName) base = fileName[:len(fileName)-len(ext)] // .file splits to base == "", ext == ".file" // so swap ext and base in this case if ext != "" && base == "" { base, ext = ext, base } return base, ext } // Add returns fileName modified to include t as the version func Add(fileName string, t time.Time) string { base, ext := splitExt(fileName) s := t.Format(versionFormat) // Replace the '.' with a '-' s = strings.ReplaceAll(s, ".", "-") return base + s + ext } // Remove returns a modified fileName without the version string and the time it represented // If the fileName did not have a version then time.Time{} is returned along with an unmodified fileName func Remove(fileName string) (t time.Time, fileNameWithoutVersion string) { fileNameWithoutVersion = fileName base, ext := splitExt(fileName) if len(base) < len(versionFormat) { return } versionStart := len(base) - len(versionFormat) // Check it ends in -xxx if base[len(base)-4] != '-' { return } // Replace with .xxx for parsing base = base[:len(base)-4] + "." + base[len(base)-3:] newT, err := time.Parse(versionFormat, base[versionStart:]) if err != nil { return } return newT, base[:versionStart] + ext } // Match returns true if the fileName has a version string func Match(fileName string) bool { return versionRegexp.MatchString(fileName) }