/
core.go
executable file
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/
core.go
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package core
import (
"bytes"
"fmt"
"github.com/BurntSushi/toml"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
)
type Settings struct {
Current string
Files []File
}
type File struct {
Path string
Prefix string
Postfix string
IsNumber bool
}
type Versions struct {
Current string
Files []Version
}
type Version struct {
Path string
Lines []string
}
const SETTINGS_FILE_NAME = ".yangpao.toml"
const SEMANTIC_VERSION_PATTERN = `\d+\.\d+\.\d+`
const SEQUENTIAL_VERSION_PATTERN = `\d+`
const (
PATCH = iota
MINOR
MAJOR
)
func Exists(path string) bool {
_, err := os.Stat(path)
return err == nil
}
func SearchSettingFile() error {
previous := ""
current, err := os.Getwd()
if err != nil {
return err
}
for previous != current {
if Exists(SETTINGS_FILE_NAME) {
return nil
}
previous = current
err = os.Chdir("..")
if err != nil {
return err
}
current, err = os.Getwd()
if err != nil {
return err
}
}
return fmt.Errorf("%s is not found. Run %s -g to generate", SETTINGS_FILE_NAME, os.Args[0])
}
func CurrentVersion() (string, error) {
var settings Settings
if err := ParseSettings(SETTINGS_FILE_NAME, &settings); err != nil {
return "", err
}
return settings.Current, nil
}
func GenerateSettingFile() {
var settings Settings
settings.Current = "0.0.0"
var file File
file.Path = "README.md"
file.Prefix = "AwesomeProject "
file.Postfix = " version"
file.IsNumber = false
settings.Files = append(settings.Files, file)
file.Path = "README.md"
file.Prefix = ""
file.Postfix = "th release"
file.IsNumber = true
settings.Files = append(settings.Files, file)
file.Path = "release_tag"
file.Prefix = "v"
file.Postfix = ""
file.IsNumber = false
settings.Files = append(settings.Files, file)
WriteBackSettings(settings)
}
func CheckVersions(versions *Versions) error {
var settings Settings
if err := ParseSettings(SETTINGS_FILE_NAME, &settings); err != nil {
return err
}
versions.Current = settings.Current
for _, file := range settings.Files {
if !Exists(file.Path) {
absolutePath, err := filepath.Abs(file.Path)
if err != nil {
return err
}
return fmt.Errorf("file is not exist: %s", absolutePath)
}
var version Version
version.Path = file.Path
var pattern string
if file.IsNumber {
pattern = fmt.Sprintf("%s%s%s", file.Prefix, SEQUENTIAL_VERSION_PATTERN, file.Postfix)
} else {
pattern = fmt.Sprintf("%s%s%s", file.Prefix, SEMANTIC_VERSION_PATTERN, file.Postfix)
}
matcher := regexp.MustCompile(pattern)
raw, err := ioutil.ReadFile(file.Path)
if err != nil {
return err
}
founds := matcher.FindAllString(string(raw), -1)
version.Lines = founds
versions.Files = append(versions.Files, version)
}
return nil
}
func Upgrade(which int) (string, error) {
var settings Settings
if err := ParseSettings(SETTINGS_FILE_NAME, &settings); err != nil {
return "", err
}
newVersion, err := UpgradeVersion(settings.Current, which)
if err != nil {
return "", err
}
settings.Current = newVersion
Replace(settings)
WriteBackSettings(settings)
return settings.Current, nil
}
func ParseSettings(settingsFileName string, settings *Settings) error {
if _, err := toml.DecodeFile(SETTINGS_FILE_NAME, &settings); err != nil {
return err
}
if settings.Current == "" {
return fmt.Errorf("current version is empty or undefined")
}
r := regexp.MustCompile(SEMANTIC_VERSION_PATTERN)
if !r.MatchString(settings.Current) {
return fmt.Errorf("version is not like semver")
}
for _, file := range settings.Files {
if file.Path == "" {
return fmt.Errorf("path for each file is requied")
}
}
return nil
}
func UpgradeVersion(current string, which int) (string, error) {
switch which {
case PATCH:
return IncrementSpecifiedVersion(current, 2)
case MINOR:
return IncrementSpecifiedVersion(current, 1)
case MAJOR:
return IncrementSpecifiedVersion(current, 0)
}
return "", fmt.Errorf("specify patch, minor, or major to upgrade")
}
func IncrementSpecifiedVersion(current string, index int) (string, error) {
split := strings.Split(current, ".")
version, err := strconv.Atoi(split[index])
if err != nil {
return "", err
}
split[index] = strconv.Itoa(version + 1)
for i := range split {
if index < i {
split[i] = "0"
}
}
return strings.Join(split, "."), nil
}
func WriteBackSettings(settings Settings) error {
file, err := os.OpenFile(SETTINGS_FILE_NAME, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0600)
if err != nil {
return err
}
var buffer bytes.Buffer
encoder := toml.NewEncoder(&buffer)
if err := encoder.Encode(settings); err != nil {
return err
}
if _, err := file.Write(buffer.Bytes()); err != nil {
return err
}
return nil
}
func SemVerToInteger(semVer string) int {
split := strings.Split(semVer, ".")
major, _ := strconv.Atoi(split[0])
minor, _ := strconv.Atoi(split[1])
patch, _ := strconv.Atoi(split[2])
return major*10000 + minor*100 + patch
}
func Replace(settings Settings) error {
for _, file := range settings.Files {
if !Exists(file.Path) {
return fmt.Errorf("file is not exist: %s", file.Path)
}
raw, err := ioutil.ReadFile(file.Path)
if err != nil {
return err
}
var pattern string
var target string
if file.IsNumber {
pattern = fmt.Sprintf("%s(%s)%s", file.Prefix, SEQUENTIAL_VERSION_PATTERN, file.Postfix)
target = fmt.Sprintf("%s%d%s", file.Prefix, SemVerToInteger(settings.Current), file.Postfix)
} else {
pattern = fmt.Sprintf("%s(%s)%s", file.Prefix, SEMANTIC_VERSION_PATTERN, file.Postfix)
target = fmt.Sprintf("%s%s%s", file.Prefix, settings.Current, file.Postfix)
}
matcher := regexp.MustCompile(pattern)
replaced := matcher.ReplaceAllString(string(raw), target)
err = ioutil.WriteFile(file.Path, []byte(replaced), 0)
if err != nil {
return err
}
}
return nil
}