diff options
Diffstat (limited to 'go-xgettext/main.go')
-rw-r--r-- | go-xgettext/main.go | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/go-xgettext/main.go b/go-xgettext/main.go deleted file mode 100644 index 881cb9f..0000000 --- a/go-xgettext/main.go +++ /dev/null @@ -1,357 +0,0 @@ -// -*- Mode: Go; indent-tabs-mode: t -*- - -/* - * Copyright (C) 2015-2016 Canonical Ltd - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -package main - -import ( - "fmt" - "go/ast" - "go/parser" - "go/token" - "io" - "io/ioutil" - "log" - "os" - "sort" - "strings" - "time" - - "github.com/jessevdk/go-flags" -) - -type msgID struct { - msgidPlural string - comment string - fname string - line int - formatHint string -} - -var msgIDs map[string][]msgID - -func formatComment(com string) string { - out := "" - for _, rawline := range strings.Split(com, "\n") { - line := rawline - line = strings.TrimPrefix(line, "//") - line = strings.TrimPrefix(line, "/*") - line = strings.TrimSuffix(line, "*/") - line = strings.TrimSpace(line) - if line != "" { - out += fmt.Sprintf("#. %s\n", line) - } - } - - return out -} - -func findCommentsForTranslation(fset *token.FileSet, f *ast.File, posCall token.Position) string { - com := "" - for _, cg := range f.Comments { - // search for all comments in the previous line - for i := len(cg.List) - 1; i >= 0; i-- { - c := cg.List[i] - - posComment := fset.Position(c.End()) - //println(posCall.Line, posComment.Line, c.Text) - if posCall.Line == posComment.Line+1 { - posCall = posComment - com = fmt.Sprintf("%s\n%s", c.Text, com) - } - } - } - - // only return if we have a matching prefix - formatedComment := formatComment(com) - needle := fmt.Sprintf("#. %s", opts.AddCommentsTag) - if !strings.HasPrefix(formatedComment, needle) { - formatedComment = "" - } - - return formatedComment -} - -func constructValue(val interface{}) string { - switch val.(type) { - case *ast.BasicLit: - return val.(*ast.BasicLit).Value - // this happens for constructs like: - // gettext.Gettext("foo" + "bar") - case *ast.BinaryExpr: - // we only support string concat - if val.(*ast.BinaryExpr).Op != token.ADD { - return "" - } - left := constructValue(val.(*ast.BinaryExpr).X) - // strip right " (or `) - left = left[0 : len(left)-1] - right := constructValue(val.(*ast.BinaryExpr).Y) - // strip left " (or `) - right = right[1:len(right)] - return left + right - default: - panic(fmt.Sprintf("unknown type: %v", val)) - } -} - -func inspectNodeForTranslations(fset *token.FileSet, f *ast.File, n ast.Node) bool { - // FIXME: this assume we always have a "gettext.Gettext" style keyword - var gettextSelector, gettextFuncName string - l := strings.Split(opts.Keyword, ".") - - if len(l) > 1 { - gettextSelector = l[0] - gettextFuncName = l[1] - } else { - gettextFuncName = l[0] - } - - var gettextSelectorPlural, gettextFuncNamePlural string - l = strings.Split(opts.KeywordPlural, ".") - - if len(l) > 1 { - gettextSelectorPlural = l[0] - gettextFuncNamePlural = l[1] - } else { - gettextFuncNamePlural = l[0] - } - - switch x := n.(type) { - case *ast.CallExpr: - var i18nStr, i18nStrPlural string - //if sel, ok := x.Fun.(*ast.Ident); ok { - - //} - switch sel := x.Fun.(type) { - case *ast.Ident: - if sel.Name == gettextFuncNamePlural { - i18nStr = x.Args[0].(*ast.BasicLit).Value - i18nStrPlural = x.Args[1].(*ast.BasicLit).Value - } - if sel.Name == gettextFuncName { - i18nStr = constructValue(x.Args[0]) - } - case *ast.SelectorExpr: - if sel.Sel.Name == gettextFuncNamePlural && sel.X.(*ast.Ident).Name == gettextSelectorPlural { - i18nStr = x.Args[0].(*ast.BasicLit).Value - i18nStrPlural = x.Args[1].(*ast.BasicLit).Value - } - - if sel.Sel.Name == gettextFuncName && sel.X.(*ast.Ident).Name == gettextSelector { - i18nStr = constructValue(x.Args[0]) - } - } - - if i18nStr == "" { - break - } - - // FIXME: too simplistic(?), no %% is considered - formatHint := "" - if strings.Contains(i18nStr, "%") || strings.Contains(i18nStrPlural, "%") { - // well, not quite correct but close enough - formatHint = "c-format" - } - - msgidStr := formatI18nStr(i18nStr) - posCall := fset.Position(n.Pos()) - msgIDs[msgidStr] = append(msgIDs[msgidStr], msgID{ - formatHint: formatHint, - msgidPlural: formatI18nStr(i18nStrPlural), - fname: posCall.Filename, - line: posCall.Line, - comment: findCommentsForTranslation(fset, f, posCall), - }) - } - - return true -} - -func formatI18nStr(s string) string { - if s == "" { - return "" - } - // the "`" is special - if s[0] == '`' { - // replace inner " with \" - s = strings.Replace(s, "\"", "\\\"", -1) - // replace \n with \\n - s = strings.Replace(s, "\n", "\\n", -1) - } - // strip leading and trailing " (or `) - s = s[1 : len(s)-1] - return s -} - -func processFiles(args []string) error { - // go over the input files - msgIDs = make(map[string][]msgID) - - fset := token.NewFileSet() - for _, fname := range args { - if err := processSingleGoSource(fset, fname); err != nil { - return err - } - } - - return nil -} - -func processSingleGoSource(fset *token.FileSet, fname string) error { - fnameContent, err := ioutil.ReadFile(fname) - if err != nil { - panic(err) - } - - // Create the AST by parsing src. - f, err := parser.ParseFile(fset, fname, fnameContent, parser.ParseComments) - if err != nil { - panic(err) - } - - ast.Inspect(f, func(n ast.Node) bool { - return inspectNodeForTranslations(fset, f, n) - }) - - return nil -} - -var formatTime = func() string { - return time.Now().Format("2006-01-02 15:04-0700") -} - -func writePotFile(out io.Writer) { - - header := fmt.Sprintf(`# SOME DESCRIPTIVE TITLE. -# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER -# This file is distributed under the same license as the PACKAGE package. -# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR. -# -#, fuzzy -msgid "" -msgstr "Project-Id-Version: %s\n" - "Report-Msgid-Bugs-To: %s\n" - "POT-Creation-Date: %s\n" - "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" - "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n" - "Language-Team: LANGUAGE <LL@li.org>\n" - "Language: \n" - "MIME-Version: 1.0\n" - "Content-Type: text/plain; charset=CHARSET\n" - "Content-Transfer-Encoding: 8bit\n" - -`, opts.PackageName, opts.MsgIDBugsAddress, formatTime()) - fmt.Fprintf(out, "%s", header) - - // yes, this is the way to do it in go - sortedKeys := []string{} - for k := range msgIDs { - sortedKeys = append(sortedKeys, k) - } - if opts.SortOutput { - sort.Strings(sortedKeys) - } - - // FIXME: use template here? - for _, k := range sortedKeys { - msgidList := msgIDs[k] - for _, msgid := range msgidList { - if opts.AddComments || opts.AddCommentsTag != "" { - fmt.Fprintf(out, "%s", msgid.comment) - } - } - if !opts.NoLocation { - fmt.Fprintf(out, "#:") - for _, msgid := range msgidList { - fmt.Fprintf(out, " %s:%d", msgid.fname, msgid.line) - } - fmt.Fprintf(out, "\n") - } - msgid := msgidList[0] - if msgid.formatHint != "" { - fmt.Fprintf(out, "#, %s\n", msgid.formatHint) - } - var formatOutput = func(in string) string { - // split string with \n into multiple lines - // to make the output nicer - out := strings.Replace(in, "\\n", "\\n\"\n \"", -1) - // cleanup too aggressive splitting (empty "" lines) - return strings.TrimSuffix(out, "\"\n \"") - } - fmt.Fprintf(out, "msgid \"%v\"\n", formatOutput(k)) - if msgid.msgidPlural != "" { - fmt.Fprintf(out, "msgid_plural \"%v\"\n", formatOutput(msgid.msgidPlural)) - fmt.Fprintf(out, "msgstr[0] \"\"\n") - fmt.Fprintf(out, "msgstr[1] \"\"\n") - } else { - fmt.Fprintf(out, "msgstr \"\"\n") - } - fmt.Fprintf(out, "\n") - } - -} - -// FIXME: this must be setable via go-flags -var opts struct { - Output string `short:"o" long:"output" description:"output to specified file"` - - AddComments bool `short:"c" long:"add-comments" description:"place all comment blocks preceding keyword lines in output file"` - - AddCommentsTag string `long:"add-comments-tag" description:"place comment blocks starting with TAG and prceding keyword lines in output file"` - - SortOutput bool `short:"s" long:"sort-output" description:"generate sorted output"` - - NoLocation bool `long:"no-location" description:"do not write '#: filename:line' lines"` - - MsgIDBugsAddress string `long:"msgid-bugs-address" default:"EMAIL" description:"set report address for msgid bugs"` - - PackageName string `long:"package-name" description:"set package name in output"` - - Keyword string `short:"k" long:"keyword" default:"gettext.Gettext" description:"look for WORD as the keyword for singular strings"` - KeywordPlural string `long:"keyword-plural" default:"gettext.NGettext" description:"look for WORD as the keyword for plural strings"` -} - -func main() { - // parse args - args, err := flags.ParseArgs(&opts, os.Args) - if err != nil { - log.Fatalf("ParseArgs failed %s", err) - } - - if err := processFiles(args[1:]); err != nil { - log.Fatalf("processFiles failed with: %s", err) - } - - out := os.Stdout - if opts.Output != "" { - var err error - out, err = os.Create(opts.Output) - if err != nil { - log.Fatalf("failed to create %s: %s", opts.Output, err) - } - } - writePotFile(out) -} |