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|
package main
import (
"bytes"
"flag"
"fmt"
"io"
"os"
"path/filepath"
"slices"
"strings"
"text/template/parse"
)
type config struct {
arg int
plural int
context int
domain int
}
type translation struct {
msgid string
msgidPlural string
msgctx string
domain string
}
type transinfo struct {
comment string
locs []loc
}
type loc struct {
file string
line int
}
func (l loc) String() string {
return fmt.Sprintf("%s:%d", l.file, l.line)
}
var (
outfile *os.File
currentFile []byte
currentPath string
lastComment string
translations map[translation]transinfo = make(map[translation]transinfo)
configs = map[string]config{
"Get": {1, -1, -1, -1},
"GetC": {1, -1, 2, -1},
"GetD": {2, -1, -1, 1},
"GetDC": {2, -1, 3, 1},
"GetN": {1, 2, -1, -1},
"GetNC": {1, 2, 4, -1},
"GetND": {2, 3, -1, 1},
"GetNDC": {2, 3, 5, 1},
}
)
func usage() {
fmt.Fprintf(os.Stderr, "Usage: %s [flags] template...\n",
filepath.Base(os.Args[0]))
flag.PrintDefaults()
}
func main() {
try(os.Chdir(filepath.Dir(os.Args[0])))
outpath := flag.String("out", "-", "output file")
flag.Usage = usage
flag.Parse()
if flag.NArg() < 1 {
flag.Usage()
os.Exit(1)
}
if *outpath == "-" {
outfile = os.Stdout
} else {
outfile = try2(os.Create(*outpath))
}
for _, f := range flag.Args() {
process(f)
}
for tl, ti := range translations {
if ti.comment != "" {
fmt.Fprintln(outfile, "#.", ti.comment)
}
slices.SortFunc(ti.locs, func(a, b loc) int {
if x := strings.Compare(a.file, b.file); x != 0 {
return x
}
return a.line - b.line
})
for _, x := range ti.locs {
fmt.Fprintln(outfile, "#:", x)
}
if tl.msgctx != "" {
writeField(outfile, "msgctx", tl.msgctx)
}
writeField(outfile, "msgid", tl.msgid)
if tl.msgidPlural != "" {
writeField(outfile, "msgid_plural", tl.msgidPlural)
writeField(outfile, "msgstr[0]", "")
writeField(outfile, "msgstr[1]", "")
} else {
writeField(outfile, "msgstr", "")
}
fmt.Fprint(outfile, "\n")
}
}
func process(path string) {
currentPath = path
currentFile = try2(os.ReadFile(path))
trees := make(map[string]*parse.Tree)
t := parse.New(path)
t.Mode |= parse.ParseComments | parse.SkipFuncCheck
try2(t.Parse(string(currentFile), "", "", trees))
for _, t := range trees {
processNode(t.Root)
}
}
func processNode(node parse.Node) {
switch n := node.(type) {
case *parse.ListNode:
for _, m := range n.Nodes {
processNode(m)
}
case *parse.IfNode:
processBranch(n.BranchNode)
case *parse.RangeNode:
processBranch(n.BranchNode)
case *parse.WithNode:
processBranch(n.BranchNode)
case *parse.ActionNode:
for _, cmd := range n.Pipe.Cmds {
if len(cmd.Args) == 0 {
continue
}
f, ok := cmd.Args[0].(*parse.FieldNode)
if !ok || len(f.Ident) == 0 {
continue
}
cfg, ok := configs[f.Ident[len(f.Ident)-1]]
if !ok {
continue
}
var (
tl translation
linenr int
)
if sn, ok := cmd.Args[cfg.arg].(*parse.StringNode); ok {
tl.msgid = sn.Text
linenr = getlinenr(sn.Pos.Position())
} else {
continue
}
if cfg.plural != -1 {
if sn, ok := cmd.Args[cfg.plural].(*parse.StringNode); ok {
tl.msgidPlural = sn.Text
}
}
if cfg.context != -1 {
if sn, ok := cmd.Args[cfg.context].(*parse.StringNode); ok {
tl.msgctx = sn.Text
}
}
ti := translations[tl]
if lastComment != "" {
ti.comment = lastComment
lastComment = ""
}
/* FIXME: Add filename and line number */
ti.locs = append(ti.locs, loc{currentPath, linenr})
translations[tl] = ti
}
case *parse.CommentNode:
if strings.HasPrefix(n.Text, "/* TRANSLATORS:") {
lastComment = strings.TrimSpace(n.Text[2 : len(n.Text)-2])
}
}
}
func processBranch(n parse.BranchNode) {
processNode(n.List)
if n.ElseList != nil {
processNode(n.ElseList)
}
}
func writeField(w io.Writer, pfx, s string) {
fmt.Fprintf(w, "%s ", pfx)
if strings.ContainsRune(s, '\n') {
fmt.Fprintln(w, "\"\"")
lines := strings.SplitAfter(s, "\n")
n := len(lines)
if n > 1 && lines[n-1] == "" {
lines = lines[:n-1]
}
for _, ss := range lines {
writeLine(w, ss)
}
fmt.Fprintln(w, "\"\"")
} else {
writeLine(w, s)
}
}
func writeLine(w io.Writer, s string) {
fmt.Fprint(w, "\"")
for _, c := range s {
switch c {
case '\\', '"':
fmt.Fprintf(w, "\\%c", c)
case '\n':
fmt.Fprint(w, "\\n")
default:
fmt.Fprintf(w, "%c", c)
}
}
fmt.Fprintln(w, "\"")
}
func getlinenr(p parse.Pos) int {
return bytes.Count(currentFile[:p], []byte{'\n'}) + 1
}
func try(err error) {
if err != nil {
die(err)
}
}
func try2[T any](val T, err error) T {
try(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)
}
|
