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//go:build go1.20
// +build go1.20
package main
import (
"fmt"
"math/rand"
"os"
"go.wit.com/log"
)
// sent via -ldflags
var VERSION string
var BUILDTIME string
var sortmap map[string]string
var marshalKeys []string
var uniqueKeys []string
var counter int = rand.Intn(100)
func main() {
var pb *Fruits
// pb = NewFruits()
pb = new(Fruits)
// attempt to load basket.pb
if err := pb.loadBasket(); err != nil {
log.Info("load basket failed. running this for the first time?")
a := pb.getNewFruit()
pb.Fruits = append(pb.Fruits, a)
pb.printTable()
}
if err := pb.saveBasket(); err != nil {
badExit(err)
}
if pb == nil {
badExit(fmt.Errorf("pb == nil This should not have happened"))
}
pb.addThings()
pb.printTable()
pb.saveBasket()
pb.sortTable(100)
}
func badExit(err error) {
log.Info("autogenpb error:", err)
os.Exit(-1)
}
func (pb *Fruits) getNewFruit() *Fruit {
counter += rand.Intn(100)
upc := fmt.Sprintf("%d", counter)
fut := &Fruit{
Brand: "mom",
City: "New NewYork",
UPC: upc,
}
return fut
}
/*
x := new(Fruit)
x = &Fruit{
Brand: "fry",
City: "Germany",
}
pb.printTable()
testAppend(x)
*/
func (pb *Fruits) printTable() {
var count int
all := pb.All()
for all.Scan() {
tmp := all.Next()
count += 1
log.Printf("found %d %s %s\n", count, tmp.Brand, tmp.City)
if count > 5 {
break
}
}
log.Printf("Total entries: %d\n", pb.Len())
}
func (pb *Fruits) sortTable(i int) {
var count int
all := pb.SortByBrand()
for all.Scan() {
tmp := all.Next()
count += 1
log.Printf("found %d %s %s\n", count, tmp.Brand, tmp.City)
if count > i {
break
}
}
log.Printf("Total entries: %d\n", pb.Len())
}
// adds 10 new entries
func (pb *Fruits) addThings() {
var added int
var count int = rand.Intn(10000)
// var base string = "bender"
for {
count += rand.Intn(1000)
var found bool
name := fmt.Sprintf("bender%d", count)
all := pb.All()
for all.Scan() {
tmp := all.Next()
if tmp.Brand == name {
// log.Printf("tmp name EQUAL %d %s vs %s city = %s len=%d\n", count, tmp.Brand, name, tmp.City, pb.Len())
found = true
break
}
// log.Printf("DID NOT EXIST %d %s vs %s city = %s len=%d\n", count, tmp.Brand, name, tmp.City, pb.Len())
}
if found {
continue
}
// log.Printf("DID NOT EXIST %d %s len=%d\n", count, name, pb.Len())
tmp := new(Fruit)
tmp.Brand = name
tmp.City = "paris"
if pb.AppendUniqueByBrand(tmp) {
// log.Printf("AppendUniqueBrand() ok len=%s %s %d\n", tmp.Brand, tmp.City, pb.Len())
} else {
badExit(fmt.Errorf("AppendUniqueByBrand() ERROR len=%s %s %d\n", tmp.Brand, tmp.City, pb.Len()))
}
pb.Append(tmp)
added += 1
if added > 10 {
return
}
}
}
func (pb *Fruits) saveBasket() error {
data, err := pb.Marshal()
if err != nil {
return err
}
w, err := os.OpenFile("basket.pb", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
return err
}
w.Write(data)
w.Close()
log.Info("saved basket.pb ok")
return nil
}
func (pb *Fruits) loadBasket() error {
if pb == nil {
pb = new(Fruits)
}
data, err := os.ReadFile("basket.pb")
if err != nil {
return err
}
if err := pb.Unmarshal(data); err != nil {
return err
}
log.Info("loaded basket.pb ok")
return nil
}
|
