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goreleaser/pipeline/git/git.go
Carlos Alexandro Becker 086ad5691c
godocs
2017-04-15 16:12:32 -03:00

104 lines
2.3 KiB
Go

// Package git implements the Pipe interface getting and validating the
// current git repository state
package git
import (
"regexp"
"strings"
"github.com/goreleaser/goreleaser/context"
)
// ErrInvalidVersionFormat is return when the version isnt in a valid format
type ErrInvalidVersionFormat struct {
version string
}
func (e ErrInvalidVersionFormat) Error() string {
return e.version + " is not in a valid version format"
}
// ErrDirty happens when the repo has uncommitted/unstashed changes
type ErrDirty struct {
status string
}
func (e ErrDirty) Error() string {
return "git is currently in a dirty state:\n" + e.status
}
// ErrWrongRef happens when the HEAD reference is different from the tag being built
type ErrWrongRef struct {
status string
}
func (e ErrWrongRef) Error() string {
return e.status
}
// Pipe for brew deployment
type Pipe struct{}
// Description of the pipe
func (Pipe) Description() string {
return "Getting and validating git state"
}
// Run the pipe
func (Pipe) Run(ctx *context.Context) (err error) {
tag, err := cleanGit("describe", "--tags", "--abbrev=0", "--always")
if err != nil {
return
}
prev, err := previous(tag)
if err != nil {
return
}
log, err := git("log", "--pretty=oneline", "--abbrev-commit", prev+".."+tag)
if err != nil {
return
}
ctx.Git = context.GitInfo{
CurrentTag: tag,
PreviousTag: prev,
Diff: log,
}
// removes usual `v` prefix
ctx.Version = strings.TrimPrefix(tag, "v")
if versionErr := isVersionValid(ctx.Version); versionErr != nil {
return versionErr
}
commit, err := cleanGit("show", "--format='%H'", "HEAD")
if err != nil {
return
}
ctx.Git.Commit = commit
out, err := git("diff")
if strings.TrimSpace(out) != "" || err != nil {
return ErrDirty{out}
}
_, err = cleanGit("describe", "--exact-match", "--tags", "--match", tag)
if err != nil {
return ErrWrongRef{err.Error()}
}
return nil
}
func previous(tag string) (previous string, err error) {
previous, err = cleanGit("describe", "--tags", "--abbrev=0", "--always", tag+"^")
if err != nil {
previous, err = cleanGit("rev-list", "--max-parents=0", "HEAD")
}
return
}
func isVersionValid(version string) error {
matches, err := regexp.MatchString("^[0-9.]+", version)
if err != nil || !matches {
return ErrInvalidVersionFormat{version}
}
return nil
}