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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
// dbgen -i <inputfile> -o <outputfile> -p <pkgname> -n <funcname> generates an installation function
// for a sqlite3 database schema installation.
package main
import (
"flag"
"fmt"
"os"
"strings"
"time"
)
var inputfilename = flag.String("i", "", "Name of the file specifying the database schema.")
var outputfilename = flag.String("o", "", "Name of the file to write out the resulting output. Default is stdout.")
var fnname = flag.String("n", "", "Name of the desired installation function; signature is \"func <name>InstallDatabase(*sql.Tx) error\"")
var pkgname = flag.String("p", "", "Name of the package to place installation function in")
var headerfilename = flag.String("h", "", "Name of the header file to use")
var template = `%s// generated by dbgen; DO NOT EDIT
package %s
import "database/sql"
func ` + "%s" + `InstallDatabase(tx *sql.Tx) error {
statement := ` + "`%s`" + `
_, err := tx.Exec(statement)
if err != nil {
return err
}
return nil
}
`
func main() {
flag.Parse()
if *pkgname == "" {
panic("error: No package name specified")
}
if *inputfilename == "" {
panic("error: No database schema file specified")
}
input, err := os.ReadFile(*inputfilename)
if err != nil {
panic(err)
}
header := ""
if *headerfilename != "" {
headerBytes, err := os.ReadFile(*headerfilename)
if err != nil {
panic(err)
}
header = string(headerBytes) + "\n"
header = strings.Replace(header, "{DATE_Y}", fmt.Sprintf("%d", time.Now().Year()), 1)
}
payload := fmt.Sprintf(template, header, *pkgname, *fnname, string(input))
if *outputfilename == "" {
fmt.Println(payload)
} else {
err := os.WriteFile(*outputfilename, []byte(payload), 0666)
if err != nil {
panic(err)
}
}
}
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