databricks-cli/libs/patchwheel/parse.go

63 lines
2.0 KiB
Go

package patchwheel
import (
"fmt"
"strconv"
"strings"
"time"
)
// WheelInfo contains information extracted from a wheel filename
type WheelInfo struct {
Distribution string // Package distribution name
Version string // Package version
Tags []string // [optional build tag,] python_tag, abi_tag, platform_tag
}
// calculateNewVersion generates a new version string and filename based on the wheel info and modification time.
// The version is updated according to the following rules:
// - if there is an existing part after + it is dropped
// - append +<mtime of the original wheel> to version
//
// Example version transform: "1.2.3" -> "1.2.3+1741091696780123321"
func calculateNewVersion(info WheelInfo, mtime time.Time) (newVersion, newFilename string) {
baseVersion, _, _ := strings.Cut(info.Version, "+")
newVersion = baseVersion + "+" + strconv.FormatInt(mtime.UnixNano(), 10)
newFilename = fmt.Sprintf("%s-%s-%s.whl",
info.Distribution,
newVersion,
strings.Join(info.Tags, "-"))
return newVersion, newFilename
}
// ParseWheelFilename parses a wheel filename and extracts its components.
// Wheel filenames follow the pattern: {distribution}-{version}(-{build tag})?-{python_tag}-{abi_tag}-{platform_tag}.whl
// https://peps.python.org/pep-0491
func ParseWheelFilename(filename string) (WheelInfo, error) {
parts := strings.Split(filename, "-")
if len(parts) < 5 {
return WheelInfo{}, fmt.Errorf("invalid wheel filename format: not enough parts in %s", filename)
}
if len(parts) > 6 {
return WheelInfo{}, fmt.Errorf("invalid wheel filename format: too many parts in %s", filename)
}
trimmedLastTag, foundWhl := strings.CutSuffix(parts[len(parts)-1], ".whl")
if !foundWhl {
return WheelInfo{}, fmt.Errorf("invalid wheel filename format: missing .whl extension in %s", filename)
}
parts[len(parts)-1] = trimmedLastTag
return WheelInfo{
Distribution: parts[0],
Version: parts[1],
Tags: parts[2:],
}, nil
}