Implement "embedded" command to extract static resources (#9982)
* draft * Implement extract command * Fix nits and force args on extract * Add !bindata stub, support Windows, fmt * fix vendored flag * Remove leading slash for matching * Add docs * Fix typos * Add embedded view command Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>release/v1.15
guillep2k
GitHub
parent
9b9dd19d7d
commit
bcb52aef09
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@ -0,0 +1,332 @@
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// +build bindata
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package cmd
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/options"
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"code.gitea.io/gitea/modules/public"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/templates"
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"github.com/gobwas/glob"
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"github.com/urfave/cli"
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)
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// Cmdembedded represents the available extract sub-command.
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var (
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Cmdembedded = cli.Command{
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Name: "embedded",
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Usage: "Extract embedded resources",
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Description: "A command for extracting embedded resources, like templates and images",
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Subcommands: []cli.Command{
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subcmdList,
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subcmdView,
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subcmdExtract,
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},
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}
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subcmdList = cli.Command{
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Name: "list",
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Usage: "List files matching the given pattern",
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Action: runList,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "include-vendored,vendor",
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Usage: "Include files under public/vendor as well",
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},
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},
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}
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subcmdView = cli.Command{
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Name: "view",
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Usage: "View a file matching the given pattern",
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Action: runView,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "include-vendored,vendor",
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Usage: "Include files under public/vendor as well",
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},
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},
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}
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subcmdExtract = cli.Command{
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Name: "extract",
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Usage: "Extract resources",
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Action: runExtract,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "include-vendored,vendor",
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Usage: "Include files under public/vendor as well",
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},
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cli.BoolFlag{
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Name: "overwrite",
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Usage: "Overwrite files if they already exist",
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},
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cli.BoolFlag{
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Name: "rename",
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Usage: "Rename files as {name}.bak if they already exist (overwrites previous .bak)",
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},
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cli.BoolFlag{
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Name: "custom",
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Usage: "Extract to the 'custom' directory as per app.ini",
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},
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cli.StringFlag{
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Name: "destination,dest-dir",
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Usage: "Extract to the specified directory",
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},
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},
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}
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sections map[string]*section
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assets []asset
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)
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type section struct {
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Path string
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Names func() []string
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IsDir func(string) (bool, error)
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Asset func(string) ([]byte, error)
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}
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type asset struct {
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Section *section
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Name string
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Path string
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}
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func initEmbeddedExtractor(c *cli.Context) error {
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// Silence the console logger
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log.DelNamedLogger("console")
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log.DelNamedLogger(log.DEFAULT)
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// Read configuration file
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setting.NewContext()
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pats, err := getPatterns(c.Args())
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if err != nil {
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return err
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}
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sections := make(map[string]*section, 3)
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sections["public"] = §ion{Path: "public", Names: public.AssetNames, IsDir: public.AssetIsDir, Asset: public.Asset}
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sections["options"] = §ion{Path: "options", Names: options.AssetNames, IsDir: options.AssetIsDir, Asset: options.Asset}
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sections["templates"] = §ion{Path: "templates", Names: templates.AssetNames, IsDir: templates.AssetIsDir, Asset: templates.Asset}
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for _, sec := range sections {
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assets = append(assets, buildAssetList(sec, pats, c)...)
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}
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// Sort assets
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sort.SliceStable(assets, func(i, j int) bool {
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return assets[i].Path < assets[j].Path
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})
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return nil
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}
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func runList(c *cli.Context) error {
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if err := runListDo(c); err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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return err
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}
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return nil
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}
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func runView(c *cli.Context) error {
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if err := runViewDo(c); err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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return err
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}
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return nil
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}
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func runExtract(c *cli.Context) error {
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if err := runExtractDo(c); err != nil {
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fmt.Fprintf(os.Stderr, "%v\n", err)
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return err
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}
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return nil
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}
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func runListDo(c *cli.Context) error {
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if err := initEmbeddedExtractor(c); err != nil {
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return err
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}
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for _, a := range assets {
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fmt.Println(a.Path)
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}
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return nil
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}
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func runViewDo(c *cli.Context) error {
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if err := initEmbeddedExtractor(c); err != nil {
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return err
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}
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if len(assets) == 0 {
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return fmt.Errorf("No files matched the given pattern")
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} else if len(assets) > 1 {
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return fmt.Errorf("Too many files matched the given pattern; try to be more specific")
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}
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data, err := assets[0].Section.Asset(assets[0].Name)
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if err != nil {
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return fmt.Errorf("%s: %v", assets[0].Path, err)
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}
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if _, err = os.Stdout.Write(data); err != nil {
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return fmt.Errorf("%s: %v", assets[0].Path, err)
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}
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return nil
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}
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func runExtractDo(c *cli.Context) error {
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if err := initEmbeddedExtractor(c); err != nil {
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return err
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}
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if len(c.Args()) == 0 {
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return fmt.Errorf("A list of pattern of files to extract is mandatory (e.g. '**' for all)")
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}
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destdir := "."
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if c.IsSet("destination") {
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destdir = c.String("destination")
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} else if c.Bool("custom") {
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destdir = setting.CustomPath
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fmt.Println("Using app.ini at", setting.CustomConf)
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}
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fi, err := os.Stat(destdir)
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if errors.Is(err, os.ErrNotExist) {
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// In case Windows users attempt to provide a forward-slash path
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wdestdir := filepath.FromSlash(destdir)
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if wfi, werr := os.Stat(wdestdir); werr == nil {
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destdir = wdestdir
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fi = wfi
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err = nil
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}
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}
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if err != nil {
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return fmt.Errorf("%s: %s", destdir, err)
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} else if !fi.IsDir() {
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return fmt.Errorf("%s is not a directory.", destdir)
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}
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fmt.Printf("Extracting to %s:\n", destdir)
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overwrite := c.Bool("overwrite")
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rename := c.Bool("rename")
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for _, a := range assets {
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if err := extractAsset(destdir, a, overwrite, rename); err != nil {
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// Non-fatal error
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fmt.Fprintf(os.Stderr, "%s: %v", a.Path, err)
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}
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}
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return nil
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}
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func extractAsset(d string, a asset, overwrite, rename bool) error {
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dest := filepath.Join(d, filepath.FromSlash(a.Path))
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dir := filepath.Dir(dest)
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data, err := a.Section.Asset(a.Name)
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if err != nil {
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return fmt.Errorf("%s: %v", a.Path, err)
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}
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if err := os.MkdirAll(dir, os.ModePerm); err != nil {
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return fmt.Errorf("%s: %v", dir, err)
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}
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perms := os.ModePerm & 0666
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fi, err := os.Lstat(dest)
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if err != nil {
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if !errors.Is(err, os.ErrNotExist) {
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return fmt.Errorf("%s: %v", dest, err)
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}
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} else if !overwrite && !rename {
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fmt.Printf("%s already exists; skipped.\n", dest)
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return nil
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} else if !fi.Mode().IsRegular() {
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return fmt.Errorf("%s already exists, but it's not a regular file", dest)
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} else if rename {
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if err := os.Rename(dest, dest+".bak"); err != nil {
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return fmt.Errorf("Error creating backup for %s: %v", dest, err)
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}
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// Attempt to respect file permissions mask (even if user:group will be set anew)
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perms = fi.Mode()
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}
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file, err := os.OpenFile(dest, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, perms)
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if err != nil {
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return fmt.Errorf("%s: %v", dest, err)
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}
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defer file.Close()
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if _, err = file.Write(data); err != nil {
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return fmt.Errorf("%s: %v", dest, err)
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}
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fmt.Println(dest)
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return nil
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}
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func buildAssetList(sec *section, globs []glob.Glob, c *cli.Context) []asset {
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var results = make([]asset, 0, 64)
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for _, name := range sec.Names() {
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if isdir, err := sec.IsDir(name); !isdir && err == nil {
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if sec.Path == "public" &&
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strings.HasPrefix(name, "vendor/") &&
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!c.Bool("include-vendored") {
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continue
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}
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matchName := sec.Path + "/" + name
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for _, g := range globs {
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if g.Match(matchName) {
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results = append(results, asset{Section: sec,
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Name: name,
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Path: sec.Path + "/" + name})
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break
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}
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}
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}
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}
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return results
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}
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func getPatterns(args []string) ([]glob.Glob, error) {
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if len(args) == 0 {
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args = []string{"**"}
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}
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pat := make([]glob.Glob, len(args))
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for i := range args {
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if g, err := glob.Compile(args[i], '/'); err != nil {
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return nil, fmt.Errorf("'%s': Invalid glob pattern: %v", args[i], err)
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} else {
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pat[i] = g
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}
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}
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return pat, nil
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}
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@ -0,0 +1,30 @@
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// +build !bindata
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package cmd
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import (
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"fmt"
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"os"
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"github.com/urfave/cli"
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)
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// Cmdembedded represents the available extract sub-command.
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var (
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Cmdembedded = cli.Command{
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Name: "embedded",
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Usage: "Extract embedded resources",
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Description: "A command for extracting embedded resources, like templates and images",
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Action: extractorNotImplemented,
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}
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)
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func extractorNotImplemented(c *cli.Context) error {
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err := fmt.Errorf("Sorry: the 'embedded' subcommand is not available in builds without bindata")
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fmt.Fprintf(os.Stderr, "%s\n", err)
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return err
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}
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@ -0,0 +1,115 @@
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---
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date: "2020-01-25T21:00:00-03:00"
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title: "Embedded data extraction tool"
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slug: "cmd-embedded"
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weight: 40
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toc: true
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draft: false
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menu:
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sidebar:
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parent: "advanced"
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name: "Embedded data extraction tool"
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weight: 40
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identifier: "cmd-embedded"
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---
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# Embedded data extraction tool
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Gitea's executable contains all the resources required to run: templates, images, style-sheets
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and translations. Any of them can be overridden by placing a replacement in a matching path
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inside the `custom` directory (see [Customizing Gitea]({{< relref "doc/advanced/customizing-gitea.en-us.md" >}})).
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To obtain a copy of the embedded resources ready for editing, the `embedded` command from the CLI
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can be used from the OS shell interface.
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## Listing resources
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To list resources embedded in Gitea's executable, use the following syntax:
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```
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gitea embedded list [--include-vendored] [patterns...]
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```
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The `--include-vendored` flag makes the command include vendored files, which are
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normally excluded; that is, files from external libraries that are required for Gitea
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(e.g. [font-awesome](https://fontawesome.com/), [octicons](https://octicons.github.com/), etc).
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A list of file search patterns can be provided. Gitea uses [gobwas/glob](https://github.com/gobwas/glob)
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for its glob syntax. Here are some examples:
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- List all template files, in any virtual directory: `**.tmpl`
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- List all mail template files: `templates/mail/**.tmpl`
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- List all files inside `public/img`: `public/img/**`
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Don't forget to use quotes for the patterns, as spaces, `*` and other characters might have
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a special meaning for your command shell.
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If no pattern is provided, all files are listed.
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#### Example
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Listing all embedded files with `openid` in their path:
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```
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$ gitea embedded list '**openid**'
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public/img/auth/openid_connect.png
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public/img/openid-16x16.png
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templates/user/auth/finalize_openid.tmpl
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templates/user/auth/signin_openid.tmpl
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templates/user/auth/signup_openid_connect.tmpl
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templates/user/auth/signup_openid_navbar.tmpl
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templates/user/auth/signup_openid_register.tmpl
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templates/user/settings/security_openid.tmpl
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```
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## Extracting resources
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To extract resources embedded in Gitea's executable, use the following syntax:
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```
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gitea [--config {file}] embedded extract [--destination {dir}|--custom] [--overwrite|--rename] [--include-vendored] {patterns...}
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```
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The `--config` option tells gitea the location of the `app.ini` configuration file if
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it's not in its default location. This option is only used with the `--custom` flag.
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The `--destination` option tells gitea the directory where the files must be extracted to.
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The default is the current directory.
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The `--custom` flag tells gitea to extract the files directly into the `custom` directory.
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For this to work, the command needs to know the location of the `app.ini` configuration
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file (`--config`) and, depending of the configuration, be ran from the directory where
|
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gitea normally starts. See [Customizing Gitea]({{< relref "doc/advanced/customizing-gitea.en-us.md" >}}) for details.
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The `--overwrite` flag allows any existing files in the destination directory to be overwritten.
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The `--rename` flag tells gitea to rename any existing files in the destination directory
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as `filename.bak`. Previous `.bak` files are overwritten.
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At least one file search pattern must be provided; see `list` subcomand above for pattern
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syntax and examples.
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#### Important notice
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Make sure to **only extract those files that require customization**. Files that
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are present in the `custom` directory are not upgraded by Gitea's upgrade process.
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When Gitea is upgraded to a new version (by replacing the executable), many of the
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embedded files will suffer changes. Gitea will honor and use any files found
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in the `custom` directory, even if they are old and incompatible.
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#### Example
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Extracting mail templates to a temporary directory:
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```
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$ mkdir tempdir
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$ gitea embedded extract --destination tempdir 'templates/mail/**.tmpl'
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Extracting to tempdir:
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tempdir/templates/mail/auth/activate.tmpl
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tempdir/templates/mail/auth/activate_email.tmpl
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tempdir/templates/mail/auth/register_notify.tmpl
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tempdir/templates/mail/auth/reset_passwd.tmpl
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tempdir/templates/mail/issue/assigned.tmpl
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tempdir/templates/mail/issue/default.tmpl
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tempdir/templates/mail/notify/collaborator.tmpl
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```
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@ -57,14 +57,21 @@ the url `http://gitea.domain.tld/image.png`.
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Place the png image at the following path: `custom/public/img/avatar_default.png`
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## Customizing Gitea pages
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## Customizing Gitea pages and resources
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The `custom/templates` folder allows changing every single page of Gitea. Templates
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to override can be found in the [`templates`](https://github.com/go-gitea/gitea/tree/master/templates) directory of Gitea source (Note: the example link is from `master` branch. Make sure to copy templates from same release you are using). Override by
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making a copy of the file under `custom/templates` using a full path structure
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matching source.
|
||||
Gitea's executable contains all the resources required to run: templates, images, style-sheets
|
||||
and translations. Any of them can be overridden by placing a replacement in a matching path
|
||||
inside the `custom` directory. For example, to replace the default `.gitignore` provided
|
||||
for C++ repositories, we want to replace `options/gitignore/C++`. To do this, a replacement
|
||||
must be placed in `custom/options/gitignore/C++` (see about the location of the `custom`
|
||||
directory at the top of this document).
|
||||
|
||||
Any statement contained inside `{{` and `}}` are Gitea's template syntax and
|
||||
Every single page of Gitea can be changed. Dynamic content is generated using [go templates](https://golang.org/pkg/html/template/),
|
||||
which can be modified by placing replacements below the `custom/templates` directory.
|
||||
|
||||
To obtain any embedded file (including templates), the [`gitea embedded` tool]({{< relref "doc/advanced/cmd-embedded.en-us.md" >}}) can be used. Alternatively, they can be found in the [`templates`](https://github.com/go-gitea/gitea/tree/master/templates) directory of Gitea source (Note: the example link is from the `master` branch. Make sure to use templates compatible with the release you are using).
|
||||
|
||||
Be aware that any statement contained inside `{{` and `}}` are Gitea's template syntax and
|
||||
shouldn't be touched without fully understanding these components.
|
||||
|
||||
### Customizing startpage / homepage
|
||||
|
|
|
|||
1
main.go
1
main.go
|
|
@ -70,6 +70,7 @@ arguments - which can alternatively be run by running the subcommand web.`
|
|||
cmd.CmdConvert,
|
||||
cmd.CmdDoctor,
|
||||
cmd.CmdManager,
|
||||
cmd.Cmdembedded,
|
||||
}
|
||||
// Now adjust these commands to add our global configuration options
|
||||
|
||||
|
|
|
|||
|
|
@ -113,6 +113,37 @@ func fileFromDir(name string) ([]byte, error) {
|
|||
return ioutil.ReadAll(f)
|
||||
}
|
||||
|
||||
func Asset(name string) ([]byte, error) {
|
||||
f, err := Assets.Open("/" + name)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer f.Close()
|
||||
return ioutil.ReadAll(f)
|
||||
}
|
||||
|
||||
func AssetNames() []string {
|
||||
realFS := Assets.(vfsgen۰FS)
|
||||
var results = make([]string, 0, len(realFS))
|
||||
for k := range realFS {
|
||||
results = append(results, k[1:])
|
||||
}
|
||||
return results
|
||||
}
|
||||
|
||||
func AssetIsDir(name string) (bool, error) {
|
||||
if f, err := Assets.Open("/" + name); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
defer f.Close()
|
||||
if fi, err := f.Stat(); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
return fi.IsDir(), nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// IsDynamic will return false when using embedded data (-tags bindata)
|
||||
func IsDynamic() bool {
|
||||
return false
|
||||
|
|
|
|||
|
|
@ -7,6 +7,8 @@
|
|||
package public
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
|
||||
"gitea.com/macaron/macaron"
|
||||
)
|
||||
|
||||
|
|
@ -17,3 +19,34 @@ func Static(opts *Options) macaron.Handler {
|
|||
// used when in the options there is no FileSystem.
|
||||
return opts.staticHandler("")
|
||||
}
|
||||
|
||||
func Asset(name string) ([]byte, error) {
|
||||
f, err := Assets.Open("/" + name)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer f.Close()
|
||||
return ioutil.ReadAll(f)
|
||||
}
|
||||
|
||||
func AssetNames() []string {
|
||||
realFS := Assets.(vfsgen۰FS)
|
||||
var results = make([]string, 0, len(realFS))
|
||||
for k := range realFS {
|
||||
results = append(results, k[1:])
|
||||
}
|
||||
return results
|
||||
}
|
||||
|
||||
func AssetIsDir(name string) (bool, error) {
|
||||
if f, err := Assets.Open("/" + name); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
defer f.Close()
|
||||
if fi, err := f.Stat(); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
return fi.IsDir(), nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -229,3 +229,16 @@ func AssetNames() []string {
|
|||
}
|
||||
return results
|
||||
}
|
||||
|
||||
func AssetIsDir(name string) (bool, error) {
|
||||
if f, err := Assets.Open("/" + name); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
defer f.Close()
|
||||
if fi, err := f.Stat(); err != nil {
|
||||
return false, err
|
||||
} else {
|
||||
return fi.IsDir(), nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue