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main.go
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main.go
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// Package reform implements reform command.
package main
import (
"flag"
"fmt"
"go/build"
"go/format"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"reflect"
"strings"
"gopkg.in/reform.v1"
"gopkg.in/reform.v1/internal"
"gopkg.in/reform.v1/parse"
)
var (
logger *internal.Logger
debugF = flag.Bool("debug", false, "Enable debug logging")
gofmtF = flag.Bool("gofmt", true, "Format with gofmt")
)
func processFile(path, file, pack string) error {
logger.Debugf("processFile: path=%q file=%q pack=%q", path, file, pack)
structs, err := parse.File(filepath.Join(path, file))
if err != nil {
return err
}
logger.Debugf("%#v", structs)
if len(structs) == 0 {
return nil
}
ext := filepath.Ext(file)
base := strings.TrimSuffix(file, ext)
f, err := os.Create(filepath.Join(path, base+"_reform"+ext))
if err != nil {
return err
}
defer f.Close()
if _, err = f.WriteString("// Code generated by gopkg.in/reform.v1. DO NOT EDIT.\n\n"); err != nil {
return err
}
if _, err = f.WriteString("package " + pack + "\n"); err != nil {
return err
}
if err = prologTemplate.Execute(f, nil); err != nil {
return err
}
sds := make([]StructData, 0, len(structs))
for _, str := range structs {
// decide about view/table suffix
t := strings.ToLower(str.Type[0:1]) + str.Type[1:]
v := str.Type
if str.IsTable() {
t += "TableType"
v += "Table"
} else {
t += "ViewType"
v += "View"
}
sd := StructData{
StructInfo: str,
TableType: t,
TableVar: v,
}
sds = append(sds, sd)
if err = structTemplate.Execute(f, &sd); err != nil {
return err
}
}
return initTemplate.Execute(f, sds)
}
func gofmt(path string) {
if *gofmtF {
cmd := exec.Command("gofmt", "-s", "-w", path)
logger.Debugf(strings.Join(cmd.Args, " "))
b, err := cmd.CombinedOutput()
if err != nil {
logger.Fatalf("gofmt error: %s", err)
}
logger.Debugf("gofmt output: %s", b)
}
}
func goformat(filePath string) {
if !*gofmtF {
in, err := ioutil.ReadFile(filePath)
if err != nil {
logger.Fatalf("go/format read error: %s", err)
}
out, err := format.Source(in)
if err != nil {
logger.Fatalf("go/format formatting error: %s", err)
}
if !reflect.DeepEqual(in, out) {
if err := ioutil.WriteFile(filePath, out, 0644); err != nil {
logger.Fatalf("go/format write error: %s", err)
}
}
}
}
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "reform - a better ORM generator. %s.\n\n", reform.Version)
fmt.Fprintf(os.Stderr, "Usage:\n\n")
fmt.Fprintf(os.Stderr, " %s [flags] [packages or directories]\n\n", os.Args[0])
fmt.Fprintf(os.Stderr, " go generate [flags] [packages or files] (with '//go:generate reform' in files)\n\n")
fmt.Fprintf(os.Stderr, "Flags:\n")
flag.PrintDefaults()
}
flag.Parse()
logger = internal.NewLogger("reform: ", *debugF)
logger.Debugf("Environment:")
for _, pair := range os.Environ() {
if strings.HasPrefix(pair, "GO") {
logger.Debugf("\t%s", pair)
}
}
wd, err := os.Getwd()
if err != nil {
logger.Fatalf("%s", err)
}
logger.Debugf("wd: %s", wd)
logger.Debugf("args: %v", flag.Args())
// process arguments
for _, arg := range flag.Args() {
// import arg as directory or package path
var pack *build.Package
s, err := os.Stat(arg)
if err == nil && s.IsDir() {
pack, err = build.ImportDir(arg, 0)
}
if os.IsNotExist(err) {
err = nil
}
if pack == nil && err == nil {
pack, err = build.Import(arg, wd, 0)
}
if err != nil {
logger.Fatalf("%s: %s", arg, err)
}
logger.Debugf("%#v", pack)
var changed bool
for _, f := range pack.GoFiles {
err = processFile(pack.Dir, f, pack.Name)
if err != nil {
logger.Fatalf("%s %s: %s", arg, f, err)
}
goformat(filepath.Join(pack.Dir, f))
changed = true
}
if changed {
gofmt(pack.Dir)
}
}
// process go generate environment
file := os.Getenv("GOFILE")
pack := os.Getenv("GOPACKAGE")
if file != "" && pack != "" {
err := processFile(wd, file, pack)
if err != nil {
logger.Fatalf("%s", err)
}
goformat(file)
gofmt(wd)
}
}