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package main
import (
"fmt"
"os"
"path/filepath"
"slices"
"strings"
"text/template/parse"
"golang.org/x/text/language"
"golang.org/x/text/message/pipeline"
"golang.org/x/tools/go/packages"
)
const (
pkgbase = "git.thomasvoss.com/euro-cash.eu"
srclang = "en"
srcdir = "./src"
transdir = srcdir + "/rosetta"
outfile = "catalog.gen.go"
transfn = "T"
)
func main() {
/* cd to the project root directory */
try(os.Chdir(filepath.Dir(os.Args[0])))
pkgnames := packageList(".")
var paths []string
pkgs := try2(packages.Load(&packages.Config{
Mode: packages.NeedFiles | packages.NeedEmbedFiles,
}, pkgnames...))
for _, pkg := range pkgs {
if len(pkg.Errors) != 0 {
for _, err := range pkg.Errors {
warn(err.Msg)
}
os.Exit(1)
}
for _, f := range pkg.EmbedFiles {
if filepath.Ext(f) == ".tmpl" {
paths = append(paths, f)
}
}
}
msgs := make([]pipeline.Message, 0, 1024)
for _, path := range paths {
f := try2(os.ReadFile(path))
trees := make(map[string]*parse.Tree)
t := parse.New("name")
t.Mode |= parse.SkipFuncCheck
try2(t.Parse(string(f), "", "", trees))
for _, t := range trees {
process(&msgs, t.Root)
}
}
pconf := &pipeline.Config{
Supported: languages(),
SourceLanguage: language.Make(srclang),
Packages: pkgnames,
Dir: transdir,
GenFile: outfile,
GenPackage: srcdir,
}
state := try2(pipeline.Extract(pconf))
state.Extracted.Messages = append(state.Extracted.Messages, msgs...)
try(state.Import())
try(state.Merge())
try(state.Export())
try(state.Generate())
}
func process(tmplMsgs *[]pipeline.Message, node parse.Node) {
switch node.Type() {
case parse.NodeList:
if ln, ok := node.(*parse.ListNode); ok {
for _, n := range ln.Nodes {
process(tmplMsgs, n)
}
}
case parse.NodeIf:
if in, ok := node.(*parse.IfNode); ok {
process(tmplMsgs, in.List)
if in.ElseList != nil {
process(tmplMsgs, in.ElseList)
}
}
case parse.NodeWith:
if wn, ok := node.(*parse.WithNode); ok {
process(tmplMsgs, wn.List)
if wn.ElseList != nil {
process(tmplMsgs, wn.ElseList)
}
}
case parse.NodeRange:
if rn, ok := node.(*parse.RangeNode); ok {
process(tmplMsgs, rn.List)
if rn.ElseList != nil {
process(tmplMsgs, rn.ElseList)
}
}
case parse.NodeAction:
an, ok := node.(*parse.ActionNode)
if !ok {
break
}
for _, cmd := range an.Pipe.Cmds {
if !hasIndent(cmd, transfn) {
continue
}
for _, arg := range cmd.Args {
if arg.Type() != parse.NodeString {
continue
}
if sn, ok := arg.(*parse.StringNode); ok {
txt := collapse(sn.Text)
*tmplMsgs = append(*tmplMsgs, pipeline.Message{
ID: pipeline.IDList{txt},
Key: txt,
Message: pipeline.Text{Msg: txt},
})
break
}
}
}
}
}
func hasIndent(cmd *parse.CommandNode, s string) bool {
if len(cmd.Args) == 0 {
return false
}
arg := cmd.Args[0]
var idents []string
switch arg.Type() {
case parse.NodeField:
idents = arg.(*parse.FieldNode).Ident
case parse.NodeVariable:
idents = arg.(*parse.VariableNode).Ident
}
return slices.Contains(idents, s)
}
func packageList(path string) []string {
ents := try2(os.ReadDir(path))
xs := make([]string, 0, len(ents))
foundOne := false
for _, ent := range ents {
switch {
case filepath.Ext(ent.Name()) == ".go":
if !foundOne {
xs = append(xs, pkgbase+"/"+path)
foundOne = true
}
case !ent.IsDir(), ent.Name() == "cmd", ent.Name() == "vendor":
continue
default:
xs = append(xs, packageList(path+"/"+ent.Name())...)
}
}
return xs
}
func languages() []language.Tag {
ents := try2(os.ReadDir(transdir))
tags := make([]language.Tag, len(ents))
for i, e := range ents {
tags[i] = language.MustParse(e.Name())
}
return tags
}
func collapse(s string) string {
var (
sb strings.Builder
prev bool
)
const spc = " \t\n"
for _, ch := range strings.Trim(s, spc) {
if strings.ContainsRune(spc, ch) {
if prev {
continue
}
ch = ' '
prev = true
} else {
prev = false
}
sb.WriteRune(ch)
}
return sb.String()
}
func try(err error) {
if err != nil {
die(err)
}
}
func try2[T any](val T, err error) T {
if err != nil {
die(err)
}
return val
}
func warn(err any) {
fmt.Fprintf(os.Stderr, "%s: %s\n", filepath.Base(os.Args[0]), err)
}
func die(err any) {
warn(err)
os.Exit(1)
}
|
