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package main
import (
"encoding/json"
"errors"
"fmt"
"io"
"os"
"runtime/pprof"
"strconv"
"github.com/github/git-sizer/git"
"github.com/github/git-sizer/isatty"
"github.com/github/git-sizer/sizes"
"github.com/spf13/pflag"
)
var ReleaseVersion string
var BuildVersion string
type NegatedBoolValue struct {
value *bool
}
func (b *NegatedBoolValue) Set(s string) error {
v, err := strconv.ParseBool(s)
*b.value = !v
return err
}
func (b *NegatedBoolValue) Get() interface{} {
return !*b.value
}
func (b *NegatedBoolValue) String() string {
if b == nil || b.value == nil {
return "true"
} else {
return strconv.FormatBool(!*b.value)
}
}
func (v *NegatedBoolValue) Type() string {
return "bool"
}
func main() {
err := mainImplementation()
if err != nil {
fmt.Fprintf(os.Stderr, "error: %s\n", err)
os.Exit(1)
}
}
func mainImplementation() error {
var processBranches bool
var processTags bool
var processRemotes bool
var nameStyle sizes.NameStyle = sizes.NameStyleFull
var cpuprofile string
var jsonOutput bool
var jsonVersion uint
var threshold sizes.Threshold = 1
var progress bool
var version bool
flags := pflag.NewFlagSet("", pflag.ContinueOnError)
flags.BoolVar(&processBranches, "branches", false, "process all branches")
flags.BoolVar(&processTags, "tags", false, "process all tags")
flags.BoolVar(&processRemotes, "remotes", false, "process all remote-tracking branches")
flags.VarP(
sizes.NewThresholdFlagValue(&threshold, 0),
"verbose", "v", "report all statistics, whether concerning or not",
)
flags.Lookup("verbose").NoOptDefVal = "true"
flags.Var(
&threshold, "threshold",
"minimum level of concern (i.e., number of stars) that should be\n"+
" reported",
)
flags.Var(
sizes.NewThresholdFlagValue(&threshold, 30),
"critical", "only report critical statistics",
)
flags.Lookup("critical").NoOptDefVal = "true"
flags.Var(
&nameStyle, "names",
"display names of large objects in the specified `style`:\n"+
" --names=none omit footnotes entirely\n"+
" --names=hash show only the SHA-1s of objects\n"+
" --names=full show full names",
)
flags.BoolVarP(&jsonOutput, "json", "j", false, "output results in JSON format")
flags.UintVar(&jsonVersion, "json-version", 1, "JSON format version to output (1 or 2)")
atty, err := isatty.Isatty(os.Stderr.Fd())
if err != nil {
atty = false
}
flags.BoolVar(&progress, "progress", atty, "report progress to stderr")
flags.BoolVar(&version, "version", false, "report the git-sizer version number")
flags.Var(&NegatedBoolValue{&progress}, "no-progress", "suppress progress output")
flags.Lookup("no-progress").NoOptDefVal = "true"
flags.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to file")
flags.MarkHidden("cpuprofile")
flags.SortFlags = false
err = flags.Parse(os.Args[1:])
if err != nil {
return err
}
if jsonOutput && !(jsonVersion == 1 || jsonVersion == 2) {
return fmt.Errorf("JSON version must be 1 or 2")
}
if cpuprofile != "" {
f, err := os.Create(cpuprofile)
if err != nil {
return fmt.Errorf("couldn't set up cpuprofile file: %s", err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if version {
if ReleaseVersion != "" {
fmt.Printf("git-sizer release %s\n", ReleaseVersion)
} else {
fmt.Printf("git-sizer build %s\n", BuildVersion)
}
return nil
}
args := flags.Args()
if len(args) != 0 {
return errors.New("excess arguments")
}
repo, err := git.NewRepository(".")
if err != nil {
return fmt.Errorf("couldn't open Git repository: %s", err)
}
defer repo.Close()
var historySize sizes.HistorySize
var filter git.ReferenceFilter
if processBranches || processTags || processRemotes {
var filters []git.ReferenceFilter
if processBranches {
filters = append(filters, git.BranchesFilter)
}
if processTags {
filters = append(filters, git.TagsFilter)
}
if processRemotes {
filters = append(filters, git.RemotesFilter)
}
filter = git.OrFilter(filters...)
} else {
filter = git.AllReferencesFilter
}
historySize, err = sizes.ScanRepositoryUsingGraph(repo, filter, nameStyle, progress)
if err != nil {
return fmt.Errorf("error scanning repository: %s", err)
}
if jsonOutput {
var j []byte
var err error
switch jsonVersion {
case 1:
j, err = json.MarshalIndent(historySize, "", " ")
case 2:
j, err = historySize.JSON(threshold, nameStyle)
default:
return fmt.Errorf("JSON version must be 1 or 2")
}
if err != nil {
return fmt.Errorf("could not convert %v to json: %s", historySize, err)
}
fmt.Printf("%s\n", j)
} else {
io.WriteString(os.Stdout, historySize.TableString(threshold, nameStyle))
}
return nil
}
|
