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main.go
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main.go
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package main
import (
"encoding/json"
"fmt"
"io"
"os"
"regexp"
"sort"
"strings"
"github.com/immofon/setlogs"
"github.com/urfave/cli/v2"
)
func Errorln(a ...any) {
fmt.Println(a...)
os.Exit(1)
}
func Errorf(format string, a ...any) {
fmt.Printf(format, a...)
os.Exit(1)
}
var userhomedir, userhomedir_err = os.UserHomeDir()
var RootPath = userhomedir + "/.setlogs"
var ConfigFileName = "config.json"
func ConfigFilePath() string {
return RootPath + "/" + ConfigFileName
}
type Base struct {
Name string
Comment string
NextLogID int
}
func InitBase(name string) Base {
return Base{
Name: name,
Comment: "",
NextLogID: 0,
}
}
func (base *Base) NextLogName(log_type setlogs.Type) string {
name := fmt.Sprintf("%s/%s/%08d_%s.json", RootPath, base.Name, base.NextLogID, log_type)
base.NextLogID += 1
return name
}
func (base Base) Load() setlogs.SetLog {
path := fmt.Sprintf("%s/%s", RootPath, base.Name)
dir, err := os.Open(path)
if err != nil {
Errorf("read setlogs for base named %q: %v\n", base.Name, err)
}
dir_entrys, err := dir.ReadDir(-1)
if err != nil {
Errorf("read setlogs for base named %q: %v\n", base.Name, err)
}
log_names := make([]string, 0)
for _, entry := range dir_entrys {
if strings.HasSuffix(entry.Name(), ".json") && entry.IsDir() == false {
log_names = append(log_names, entry.Name())
}
}
sort.Sort(sort.StringSlice(log_names))
logs := setlogs.New(setlogs.TypeEmpty)
for _, log_name := range log_names {
f, err := os.Open(path + "/" + log_name)
if err != nil {
Errorf("load %s/%s: %v\n", base.Name, log_name, err)
}
logs.Merge(setlogs.ReadJSON(f))
f.Close()
}
return logs
}
func Load(base_name string) (Config, Base) {
name := strings.TrimSpace(base_name)
config := MustReadConfig()
base, ok := config.Bases[name]
if !ok {
Errorf("Base named %q does not exist!\n", name)
}
return config, base
}
func SaveSetLog(base_name string, logs setlogs.SetLog) error {
base_name = strings.TrimSpace(base_name)
config, base := Load(base_name)
err := SafeWriteFileJSON(base.NextLogName(logs.Type), logs)
if err != nil {
return err
}
config.Bases[base_name] = base
return config.Save()
}
type Config struct {
Bases map[string]Base // key: Base.Name
}
func (config Config) Save() error {
return SafeWriteFileJSON(ConfigFilePath(), config)
}
func ReadConfig() (Config, error) {
var config Config
f, err := os.Open(ConfigFilePath())
if err != nil {
return config, err
}
defer f.Close()
err = json.NewDecoder(f).Decode(&config)
return config, err
}
func MustReadConfig() Config {
config, err := ReadConfig()
if err != nil {
Errorln("read config.json:", err)
}
return config
}
func SafeWriteFile(filename string, data []byte) error {
tmpfilename := filename + ".safe_tmp"
f, err := os.OpenFile(tmpfilename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0400)
if err != nil {
return err
}
defer f.Close()
f.Write(data)
err = f.Sync()
if err != nil {
return err
}
return os.Rename(tmpfilename, filename)
}
func SafeWriteFileJSON(filename string, v any) error {
data, err := json.MarshalIndent(v, "", " ")
if err != nil {
return err
}
return SafeWriteFile(filename, data)
}
func Mkdir(name string) error {
return os.Mkdir(name, 0700)
}
func main() {
app := &cli.App{
Name: "setlogs",
Flags: []cli.Flag{},
Commands: []*cli.Command{
{
Name: "init",
Aliases: []string{},
Flags: []cli.Flag{},
Usage: "Use this command if you didn't use it",
Description: "init setlogs",
Action: func(c *cli.Context) error {
fileinfo, err := os.Stat(RootPath)
if err == nil {
if !fileinfo.IsDir() {
Errorf("%s exists but it is not dir! You should delete this file if you want to use this program!", RootPath)
} else {
Errorf("%s exists! You should delete this file if you want to remove all your bases!", RootPath)
}
}
err = Mkdir(RootPath)
if err != nil {
Errorf("create dir: %s; error: %v\n", RootPath, err)
}
// init config
err = Config{
Bases: make(map[string]Base),
}.Save()
if err != nil {
Errorln("init config.json", err)
}
return nil
},
},
{
Name: "csv",
Aliases: []string{},
Flags: []cli.Flag{
&cli.StringFlag{Name: "file", Value: "", Usage: "MUST SET! csv filename"},
&cli.StringFlag{Name: "name", Value: "", Usage: "MUST SET! base name"},
&cli.StringFlag{Name: "type", Value: "base", Usage: "the type of setlogs, must be base|mutate|set"},
},
Usage: "init base by read .csv file",
Description: "Read.csv file to init base",
Action: func(c *cli.Context) error {
name := strings.TrimSpace(c.String("name"))
setlogs_type := setlogs.Type(strings.TrimSpace(c.String("type")))
if name == "" {
Errorln("You MUST set --name")
}
if setlogs_type != setlogs.TypeBase && setlogs_type != setlogs.TypeMutate && setlogs_type != setlogs.TypeSet {
Errorln("You MUST set --type as base|mutate|set")
}
config := MustReadConfig()
f, err := os.Open(c.String("file"))
if err != nil {
Errorln("open csv file", err)
}
defer f.Close()
logs := setlogs.ReadCSV(f, setlogs_type)
base, ok := config.Bases[name]
if setlogs_type == setlogs.TypeBase {
if ok {
Errorf("base named %q exists, please choose another name!\n", name)
}
err = Mkdir(RootPath + "/" + name)
if err != nil {
Errorln("mkdir", err)
}
base = InitBase(name)
} else {
if !ok {
Errorf("You must init base named %q first!\n", name)
}
}
err = SafeWriteFileJSON(base.NextLogName(setlogs_type), logs)
if err != nil {
Errorln("save log", err)
}
config.Bases[name] = base
err = config.Save()
if err != nil {
Errorln("save config.json", err)
}
return nil
},
},
{
Name: "view",
Aliases: []string{},
Flags: []cli.Flag{
&cli.StringFlag{Name: "name", Value: "", Usage: "MUST SET! base name"},
&cli.BoolFlag{Name: "csv", Value: false, Usage: "output result as csv format"},
},
Usage: "Use this command if you didn't use it",
Description: "view base named --name",
Action: func(c *cli.Context) error {
var w io.Writer = os.Stdout
name := strings.TrimSpace(c.String("name"))
_, base := Load(name)
logs := base.Load()
if c.Bool("csv") {
err := logs.CSV(w)
if err != nil {
Errorln("output csv:", err)
}
} else {
logs.TableFprintln(w)
}
return nil
},
},
{
Name: "plugin",
Aliases: []string{},
Flags: []cli.Flag{
&cli.StringFlag{Name: "base", Value: "", Usage: "MUST SET! base name"},
},
Usage: "Use this command if you didn't use it",
Description: "run plugin",
Action: func(c *cli.Context) error {
args := c.Args().Slice()
if len(args) < 1 {
Errorln("setlogs plugin [options] <plugin_name> [plugin args]")
}
plugin_name := args[0]
args = args[1:]
plugin_error_must_be_not_nil := func(err error) {
if err != nil {
Errorf("Plugin error[%s]:%v\n", plugin_name, err)
}
}
_, base := Load(c.String("base"))
logs := base.Load()
switch plugin_name {
case "jlu-mathlab-homework-count":
if len(args) == 0 {
Errorln("Plugin usage: jlu-mathlab-homework-count <homework-path> [key]")
}
homework_dir_path := args[0]
key := ""
value := "T"
view_only := true
if len(args) == 1 {
} else if len(args) == 2 {
view_only = false
key = strings.TrimSpace(args[1])
if len(key) == 0 {
Errorln("Plugin usage: You must set key!")
}
} else {
Errorln("Plugin usage: jlu-mathlab-homework-count <homework-path> [key value commit-message]")
}
if view_only {
key = "@new"
}
commit_message := fmt.Sprintf("Set Record[%q] = %q which satisfied condition. generated by plugin[%s] from homework-path: %s", key, value, plugin_name, homework_dir_path)
homework_dir, err := os.Open(homework_dir_path)
plugin_error_must_be_not_nil(err)
homework_dir_entrys, err := homework_dir.ReadDir(-1)
plugin_error_must_be_not_nil(err)
stdents_id_set := setlogs.NewSet()
numbers_re := regexp.MustCompile("[0-9]+")
for _, homework_dir_entry := range homework_dir_entrys {
student_id := numbers_re.FindString(homework_dir_entry.Name())
if len(student_id) > 0 {
stdents_id_set[student_id] = true
}
}
mutates := setlogs.New(setlogs.TypeMutate)
mutates.Comment = commit_message
for student_id := range stdents_id_set {
mutates.AppendRecords(setlogs.Record{
setlogs.ID: student_id,
key: value,
})
}
fmt.Println("# Mutates")
mutates.TableFprintln(os.Stdout)
logs.Merge(mutates)
if view_only {
fmt.Println("# After mutations")
logs.TableFprintln(os.Stdout)
break
} else {
SaveSetLog(base.Name, mutates)
break
}
default:
Errorln("Not found plugin:", plugin_name)
}
return nil
},
},
},
}
_ = app.Run(os.Args)
}