pulumi/sdk/go/pulumi-language-go/buildutil/semver.go

118 lines
4.2 KiB
Go

// Copyright 2016-2018, Pulumi Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package buildutil
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/contract"
"golang.org/x/mod/semver"
)
var (
releaseVersionRegex = regexp.MustCompile(
`^v(?P<version>\d+\.\d+\.\d+)(?P<dirty>\+dirty)?$`)
rcVersionRegex = regexp.MustCompile(
`^v(?P<version>\d+\.\d+\.\d+)-rc\.(?P<rcN>\d+)(?P<dirty>\+dirty)?$`)
betaVersionRegex = regexp.MustCompile(
`^v(?P<version>\d+\.\d+\.\d+)-beta\.(?P<betaN>\d+)(?P<dirty>.dirty)?$`)
alphaVersionRegex = regexp.MustCompile(
`^v(?P<version>\d+\.\d+\.\d+)-alpha\.(?P<time>\d+)\+(?P<gitInfo>g[a-z0-9]+)(?P<dirty>.dirty)?$`)
devVersionRegex = regexp.MustCompile(
`^v(?P<version>\d+\.\d+\.\d+)-dev\.(?P<time>\d+)\+(?P<gitInfo>g[a-z0-9]+)(?P<dirty>.dirty)?$`)
//nolint:lll
// https://github.com/golang/go/blob/9f40f9f4d3e9e5a08cfd1df5af23a6f61d67d408/src/cmd/go/internal/modfetch/pseudo.go#L49
pseudoVersionRegex = regexp.MustCompile(`^v[0-9]+\.(0\.0-|\d+\.\d+-([^+]*\.)?0\.)\d{14}-[A-Za-z0-9]+(\+[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$`)
)
// IsPseudoVersion reports whether v is a go modules pseudo-version.
// https://github.com/golang/go/blob/9f40f9f4d3e9e5a08cfd1df5af23a6f61d67d408/src/cmd/go/internal/modfetch/pseudo.go#L118
//
//nolint:lll
func IsPseudoVersion(v string) bool {
return strings.Count(v, "-") >= 2 && semver.IsValid(v) && pseudoVersionRegex.MatchString(v)
}
// PyPiVersionFromNpmVersion returns a PEP-440 compliant version for a given semver version. This method does not
// support all possible semver strings, but instead just supports versions that we generate for our node packages.
//
// NOTE: We do not include git information in the generated version (even within the local part, which PEP440 would
// allow) because we publish dev packages to PyPI, which does not allow local parts. Instead, we only add a local part
// when the build is dirty (which has the nice side effect of preventing us from publishing a build from dirty bits).
func PyPiVersionFromNpmVersion(s string) (string, error) {
var b bytes.Buffer
switch {
case releaseVersionRegex.MatchString(s):
capMap := captureToMap(releaseVersionRegex, s)
mustFprintf(&b, "%s", capMap["version"])
if capMap["dirty"] != "" {
mustFprintf(&b, "+dirty")
}
return b.String(), nil
case rcVersionRegex.MatchString(s):
capMap := captureToMap(rcVersionRegex, s)
mustFprintf(&b, "%src%s", capMap["version"], capMap["rcN"])
if capMap["dirty"] != "" {
mustFprintf(&b, "+dirty")
}
return b.String(), nil
case betaVersionRegex.MatchString(s):
capMap := captureToMap(betaVersionRegex, s)
mustFprintf(&b, "%sb%s", capMap["version"], capMap["betaN"])
if capMap["dirty"] != "" {
mustFprintf(&b, "+dirty")
}
return b.String(), nil
case alphaVersionRegex.MatchString(s):
capMap := captureToMap(alphaVersionRegex, s)
mustFprintf(&b, "%sa%s", capMap["version"], capMap["time"])
if capMap["dirty"] != "" {
mustFprintf(&b, "+dirty")
}
return b.String(), nil
case devVersionRegex.MatchString(s):
capMap := captureToMap(devVersionRegex, s)
mustFprintf(&b, "%s.dev%s", capMap["version"], capMap["time"])
if capMap["dirty"] != "" {
mustFprintf(&b, "+dirty")
}
return b.String(), nil
}
return "", fmt.Errorf("can not parse version string '%s'", s)
}
func captureToMap(r *regexp.Regexp, s string) map[string]string {
matches := r.FindStringSubmatch(s)
capMap := make(map[string]string)
for i, name := range r.SubexpNames() {
if name != "" {
capMap[name] = matches[i]
}
}
return capMap
}
func mustFprintf(w io.Writer, format string, a ...interface{}) {
_, err := fmt.Fprintf(w, format, a...)
contract.AssertNoErrorf(err, "failed to write")
}