ref: 20a35374a3c90adb32a90a5f671afb15165210be
dir: /commands/hugo.go/
// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package commands defines and implements command-line commands and flags
// used by Hugo. Commands and flags are implemented using Cobra.
package commands
import (
"context"
"fmt"
"io/ioutil"
"os/signal"
"runtime/pprof"
"runtime/trace"
"sync/atomic"
"github.com/gohugoio/hugo/hugofs"
"github.com/gohugoio/hugo/resources/page"
"github.com/pkg/errors"
"github.com/gohugoio/hugo/common/herrors"
"github.com/gohugoio/hugo/common/loggers"
"github.com/gohugoio/hugo/common/terminal"
"syscall"
"github.com/gohugoio/hugo/hugolib/filesystems"
"golang.org/x/sync/errgroup"
"os"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/gohugoio/hugo/config"
flag "github.com/spf13/pflag"
"github.com/fsnotify/fsnotify"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/hugolib"
"github.com/gohugoio/hugo/livereload"
"github.com/gohugoio/hugo/watcher"
"github.com/spf13/afero"
"github.com/spf13/cobra"
"github.com/spf13/fsync"
jww "github.com/spf13/jwalterweatherman"
)
// The Response value from Execute.
type Response struct {
// The build Result will only be set in the hugo build command.
Result *hugolib.HugoSites
// Err is set when the command failed to execute.
Err error
// The command that was executed.
Cmd *cobra.Command
}
// IsUserError returns true is the Response error is a user error rather than a
// system error.
func (r Response) IsUserError() bool {
return r.Err != nil && isUserError(r.Err)
}
// Execute adds all child commands to the root command HugoCmd and sets flags appropriately.
// The args are usually filled with os.Args[1:].
func Execute(args []string) Response {
hugoCmd := newCommandsBuilder().addAll().build()
cmd := hugoCmd.getCommand()
cmd.SetArgs(args)
c, err := cmd.ExecuteC()
var resp Response
if c == cmd && hugoCmd.c != nil {
// Root command executed
resp.Result = hugoCmd.c.hugo()
}
if err == nil {
errCount := int(loggers.GlobalErrorCounter.Count())
if errCount > 0 {
err = fmt.Errorf("logged %d errors", errCount)
} else if resp.Result != nil {
errCount = resp.Result.NumLogErrors()
if errCount > 0 {
err = fmt.Errorf("logged %d errors", errCount)
}
}
}
resp.Err = err
resp.Cmd = c
return resp
}
// InitializeConfig initializes a config file with sensible default configuration flags.
func initializeConfig(mustHaveConfigFile, running bool,
h *hugoBuilderCommon,
f flagsToConfigHandler,
cfgInit func(c *commandeer) error) (*commandeer, error) {
c, err := newCommandeer(mustHaveConfigFile, running, h, f, cfgInit)
if err != nil {
return nil, err
}
return c, nil
}
func (c *commandeer) createLogger(cfg config.Provider, running bool) (loggers.Logger, error) {
var (
logHandle = ioutil.Discard
logThreshold = jww.LevelWarn
logFile = cfg.GetString("logFile")
outHandle = ioutil.Discard
stdoutThreshold = jww.LevelWarn
)
if !c.h.quiet {
outHandle = os.Stdout
}
if c.h.verboseLog || c.h.logging || (c.h.logFile != "") {
var err error
if logFile != "" {
logHandle, err = os.OpenFile(logFile, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0666)
if err != nil {
return nil, newSystemError("Failed to open log file:", logFile, err)
}
} else {
logHandle, err = ioutil.TempFile("", "hugo")
if err != nil {
return nil, newSystemError(err)
}
}
} else if !c.h.quiet && cfg.GetBool("verbose") {
stdoutThreshold = jww.LevelInfo
}
if cfg.GetBool("debug") {
stdoutThreshold = jww.LevelDebug
}
if c.h.verboseLog {
logThreshold = jww.LevelInfo
if cfg.GetBool("debug") {
logThreshold = jww.LevelDebug
}
}
loggers.InitGlobalLogger(stdoutThreshold, logThreshold, outHandle, logHandle)
helpers.InitLoggers()
return loggers.NewLogger(stdoutThreshold, logThreshold, outHandle, logHandle, running), nil
}
func initializeFlags(cmd *cobra.Command, cfg config.Provider) {
persFlagKeys := []string{
"debug",
"verbose",
"logFile",
// Moved from vars
}
flagKeys := []string{
"cleanDestinationDir",
"buildDrafts",
"buildFuture",
"buildExpired",
"uglyURLs",
"canonifyURLs",
"enableRobotsTXT",
"enableGitInfo",
"pluralizeListTitles",
"preserveTaxonomyNames",
"ignoreCache",
"forceSyncStatic",
"noTimes",
"noChmod",
"ignoreVendor",
"ignoreVendorPaths",
"templateMetrics",
"templateMetricsHints",
// Moved from vars.
"baseURL",
"buildWatch",
"cacheDir",
"cfgFile",
"confirm",
"contentDir",
"debug",
"destination",
"disableKinds",
"dryRun",
"force",
"gc",
"i18n-warnings",
"invalidateCDN",
"layoutDir",
"logFile",
"maxDeletes",
"quiet",
"renderToMemory",
"source",
"target",
"theme",
"themesDir",
"verbose",
"verboseLog",
"duplicateTargetPaths",
}
for _, key := range persFlagKeys {
setValueFromFlag(cmd.PersistentFlags(), key, cfg, "", false)
}
for _, key := range flagKeys {
setValueFromFlag(cmd.Flags(), key, cfg, "", false)
}
setValueFromFlag(cmd.Flags(), "minify", cfg, "minifyOutput", true)
// Set some "config aliases"
setValueFromFlag(cmd.Flags(), "destination", cfg, "publishDir", false)
setValueFromFlag(cmd.Flags(), "i18n-warnings", cfg, "logI18nWarnings", false)
setValueFromFlag(cmd.Flags(), "path-warnings", cfg, "logPathWarnings", false)
}
func setValueFromFlag(flags *flag.FlagSet, key string, cfg config.Provider, targetKey string, force bool) {
key = strings.TrimSpace(key)
if (force && flags.Lookup(key) != nil) || flags.Changed(key) {
f := flags.Lookup(key)
configKey := key
if targetKey != "" {
configKey = targetKey
}
// Gotta love this API.
switch f.Value.Type() {
case "bool":
bv, _ := flags.GetBool(key)
cfg.Set(configKey, bv)
case "string":
cfg.Set(configKey, f.Value.String())
case "stringSlice":
bv, _ := flags.GetStringSlice(key)
cfg.Set(configKey, bv)
case "int":
iv, _ := flags.GetInt(key)
cfg.Set(configKey, iv)
default:
panic(fmt.Sprintf("update switch with %s", f.Value.Type()))
}
}
}
func isTerminal() bool {
return terminal.IsTerminal(os.Stdout)
}
func (c *commandeer) fullBuild() error {
var (
g errgroup.Group
langCount map[string]uint64
)
if !c.h.quiet {
fmt.Println("Start building sites … ")
if isTerminal() {
defer func() {
fmt.Print(showCursor + clearLine)
}()
}
}
copyStaticFunc := func() error {
cnt, err := c.copyStatic()
if err != nil {
return errors.Wrap(err, "Error copying static files")
}
langCount = cnt
return nil
}
buildSitesFunc := func() error {
if err := c.buildSites(); err != nil {
return errors.Wrap(err, "Error building site")
}
return nil
}
// Do not copy static files and build sites in parallel if cleanDestinationDir is enabled.
// This flag deletes all static resources in /public folder that are missing in /static,
// and it does so at the end of copyStatic() call.
if c.Cfg.GetBool("cleanDestinationDir") {
if err := copyStaticFunc(); err != nil {
return err
}
if err := buildSitesFunc(); err != nil {
return err
}
} else {
g.Go(copyStaticFunc)
g.Go(buildSitesFunc)
if err := g.Wait(); err != nil {
return err
}
}
for _, s := range c.hugo().Sites {
s.ProcessingStats.Static = langCount[s.Language().Lang]
}
if c.h.gc {
count, err := c.hugo().GC()
if err != nil {
return err
}
for _, s := range c.hugo().Sites {
// We have no way of knowing what site the garbage belonged to.
s.ProcessingStats.Cleaned = uint64(count)
}
}
return nil
}
func (c *commandeer) initCPUProfile() (func(), error) {
if c.h.cpuprofile == "" {
return nil, nil
}
f, err := os.Create(c.h.cpuprofile)
if err != nil {
return nil, errors.Wrap(err, "failed to create CPU profile")
}
if err := pprof.StartCPUProfile(f); err != nil {
return nil, errors.Wrap(err, "failed to start CPU profile")
}
return func() {
pprof.StopCPUProfile()
f.Close()
}, nil
}
func (c *commandeer) initMemProfile() {
if c.h.memprofile == "" {
return
}
f, err := os.Create(c.h.memprofile)
if err != nil {
c.logger.Errorf("could not create memory profile: ", err)
}
defer f.Close()
runtime.GC() // get up-to-date statistics
if err := pprof.WriteHeapProfile(f); err != nil {
c.logger.Errorf("could not write memory profile: ", err)
}
}
func (c *commandeer) initTraceProfile() (func(), error) {
if c.h.traceprofile == "" {
return nil, nil
}
f, err := os.Create(c.h.traceprofile)
if err != nil {
return nil, errors.Wrap(err, "failed to create trace file")
}
if err := trace.Start(f); err != nil {
return nil, errors.Wrap(err, "failed to start trace")
}
return func() {
trace.Stop()
f.Close()
}, nil
}
func (c *commandeer) initMutexProfile() (func(), error) {
if c.h.mutexprofile == "" {
return nil, nil
}
f, err := os.Create(c.h.mutexprofile)
if err != nil {
return nil, err
}
runtime.SetMutexProfileFraction(1)
return func() {
pprof.Lookup("mutex").WriteTo(f, 0)
f.Close()
}, nil
}
func (c *commandeer) initMemTicker() func() {
memticker := time.NewTicker(5 * time.Second)
quit := make(chan struct{})
printMem := func() {
var m runtime.MemStats
runtime.ReadMemStats(&m)
fmt.Printf("\n\nAlloc = %v\nTotalAlloc = %v\nSys = %v\nNumGC = %v\n\n", formatByteCount(m.Alloc), formatByteCount(m.TotalAlloc), formatByteCount(m.Sys), m.NumGC)
}
go func() {
for {
select {
case <-memticker.C:
printMem()
case <-quit:
memticker.Stop()
printMem()
return
}
}
}()
return func() {
close(quit)
}
}
func (c *commandeer) initProfiling() (func(), error) {
stopCPUProf, err := c.initCPUProfile()
if err != nil {
return nil, err
}
stopMutexProf, err := c.initMutexProfile()
if err != nil {
return nil, err
}
stopTraceProf, err := c.initTraceProfile()
if err != nil {
return nil, err
}
var stopMemTicker func()
if c.h.printm {
stopMemTicker = c.initMemTicker()
}
return func() {
c.initMemProfile()
if stopCPUProf != nil {
stopCPUProf()
}
if stopMutexProf != nil {
stopMutexProf()
}
if stopTraceProf != nil {
stopTraceProf()
}
if stopMemTicker != nil {
stopMemTicker()
}
}, nil
}
func (c *commandeer) build() error {
stopProfiling, err := c.initProfiling()
if err != nil {
return err
}
defer func() {
if stopProfiling != nil {
stopProfiling()
}
}()
if err := c.fullBuild(); err != nil {
return err
}
// TODO(bep) Feedback?
if !c.h.quiet {
fmt.Println()
c.hugo().PrintProcessingStats(os.Stdout)
fmt.Println()
if createCounter, ok := c.destinationFs.(hugofs.DuplicatesReporter); ok {
dupes := createCounter.ReportDuplicates()
if dupes != "" {
c.logger.Warnln("Duplicate target paths:", dupes)
}
}
}
if c.h.buildWatch {
watchDirs, err := c.getDirList()
if err != nil {
return err
}
baseWatchDir := c.Cfg.GetString("workingDir")
rootWatchDirs := getRootWatchDirsStr(baseWatchDir, watchDirs)
c.logger.Printf("Watching for changes in %s%s{%s}\n", baseWatchDir, helpers.FilePathSeparator, rootWatchDirs)
c.logger.Println("Press Ctrl+C to stop")
watcher, err := c.newWatcher(watchDirs...)
checkErr(c.Logger, err)
defer watcher.Close()
var sigs = make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
<-sigs
}
return nil
}
func (c *commandeer) serverBuild() error {
defer c.timeTrack(time.Now(), "Built")
stopProfiling, err := c.initProfiling()
if err != nil {
return err
}
defer func() {
if stopProfiling != nil {
stopProfiling()
}
}()
if err := c.fullBuild(); err != nil {
return err
}
// TODO(bep) Feedback?
if !c.h.quiet {
fmt.Println()
c.hugo().PrintProcessingStats(os.Stdout)
fmt.Println()
}
return nil
}
func (c *commandeer) copyStatic() (map[string]uint64, error) {
m, err := c.doWithPublishDirs(c.copyStaticTo)
if err == nil || os.IsNotExist(err) {
return m, nil
}
return m, err
}
func (c *commandeer) doWithPublishDirs(f func(sourceFs *filesystems.SourceFilesystem) (uint64, error)) (map[string]uint64, error) {
langCount := make(map[string]uint64)
staticFilesystems := c.hugo().BaseFs.SourceFilesystems.Static
if len(staticFilesystems) == 0 {
c.logger.Infoln("No static directories found to sync")
return langCount, nil
}
for lang, fs := range staticFilesystems {
cnt, err := f(fs)
if err != nil {
return langCount, err
}
if lang == "" {
// Not multihost
for _, l := range c.languages {
langCount[l.Lang] = cnt
}
} else {
langCount[lang] = cnt
}
}
return langCount, nil
}
type countingStatFs struct {
afero.Fs
statCounter uint64
}
func (fs *countingStatFs) Stat(name string) (os.FileInfo, error) {
f, err := fs.Fs.Stat(name)
if err == nil {
if !f.IsDir() {
atomic.AddUint64(&fs.statCounter, 1)
}
}
return f, err
}
func chmodFilter(dst, src os.FileInfo) bool {
// Hugo publishes data from multiple sources, potentially
// with overlapping directory structures. We cannot sync permissions
// for directories as that would mean that we might end up with write-protected
// directories inside /public.
// One example of this would be syncing from the Go Module cache,
// which have 0555 directories.
return src.IsDir()
}
func (c *commandeer) copyStaticTo(sourceFs *filesystems.SourceFilesystem) (uint64, error) {
publishDir := c.hugo().PathSpec.PublishDir
// If root, remove the second '/'
if publishDir == "//" {
publishDir = helpers.FilePathSeparator
}
if sourceFs.PublishFolder != "" {
publishDir = filepath.Join(publishDir, sourceFs.PublishFolder)
}
fs := &countingStatFs{Fs: sourceFs.Fs}
syncer := fsync.NewSyncer()
syncer.NoTimes = c.Cfg.GetBool("noTimes")
syncer.NoChmod = c.Cfg.GetBool("noChmod")
syncer.ChmodFilter = chmodFilter
syncer.SrcFs = fs
syncer.DestFs = c.Fs.Destination
// Now that we are using a unionFs for the static directories
// We can effectively clean the publishDir on initial sync
syncer.Delete = c.Cfg.GetBool("cleanDestinationDir")
if syncer.Delete {
c.logger.Infoln("removing all files from destination that don't exist in static dirs")
syncer.DeleteFilter = func(f os.FileInfo) bool {
return f.IsDir() && strings.HasPrefix(f.Name(), ".")
}
}
c.logger.Infoln("syncing static files to", publishDir)
// because we are using a baseFs (to get the union right).
// set sync src to root
err := syncer.Sync(publishDir, helpers.FilePathSeparator)
if err != nil {
return 0, err
}
// Sync runs Stat 3 times for every source file (which sounds much)
numFiles := fs.statCounter / 3
return numFiles, err
}
func (c *commandeer) firstPathSpec() *helpers.PathSpec {
return c.hugo().Sites[0].PathSpec
}
func (c *commandeer) timeTrack(start time.Time, name string) {
elapsed := time.Since(start)
c.logger.Printf("%s in %v ms", name, int(1000*elapsed.Seconds()))
}
// getDirList provides NewWatcher() with a list of directories to watch for changes.
func (c *commandeer) getDirList() ([]string, error) {
var filenames []string
walkFn := func(path string, fi hugofs.FileMetaInfo, err error) error {
if err != nil {
c.logger.Errorln("walker: ", err)
return nil
}
if fi.IsDir() {
if fi.Name() == ".git" ||
fi.Name() == "node_modules" || fi.Name() == "bower_components" {
return filepath.SkipDir
}
filenames = append(filenames, fi.Meta().Filename())
}
return nil
}
watchFiles := c.hugo().PathSpec.BaseFs.WatchDirs()
for _, fi := range watchFiles {
if !fi.IsDir() {
filenames = append(filenames, fi.Meta().Filename())
continue
}
w := hugofs.NewWalkway(hugofs.WalkwayConfig{Logger: c.logger, Info: fi, WalkFn: walkFn})
if err := w.Walk(); err != nil {
c.logger.Errorln("walker: ", err)
}
}
filenames = helpers.UniqueStringsSorted(filenames)
return filenames, nil
}
func (c *commandeer) buildSites() (err error) {
return c.hugo().Build(hugolib.BuildCfg{})
}
func (c *commandeer) handleBuildErr(err error, msg string) {
c.buildErr = err
c.logger.Errorln(msg + ":\n")
c.logger.Errorln(helpers.FirstUpper(err.Error()))
if !c.h.quiet && c.h.verbose {
herrors.PrintStackTraceFromErr(err)
}
}
func (c *commandeer) rebuildSites(events []fsnotify.Event) error {
defer c.timeTrack(time.Now(), "Total")
c.buildErr = nil
visited := c.visitedURLs.PeekAllSet()
if c.fastRenderMode {
// Make sure we always render the home pages
for _, l := range c.languages {
langPath := c.hugo().PathSpec.GetLangSubDir(l.Lang)
if langPath != "" {
langPath = langPath + "/"
}
home := c.hugo().PathSpec.PrependBasePath("/"+langPath, false)
visited[home] = true
}
}
return c.hugo().Build(hugolib.BuildCfg{RecentlyVisited: visited, ErrRecovery: c.wasError}, events...)
}
func (c *commandeer) partialReRender(urls ...string) error {
defer func() {
c.wasError = false
}()
c.buildErr = nil
visited := make(map[string]bool)
for _, url := range urls {
visited[url] = true
}
return c.hugo().Build(hugolib.BuildCfg{RecentlyVisited: visited, PartialReRender: true, ErrRecovery: c.wasError})
}
func (c *commandeer) fullRebuild(changeType string) {
if changeType == configChangeGoMod {
// go.mod may be changed during the build itself, and
// we really want to prevent superfluous builds.
if !c.fullRebuildSem.TryAcquire(1) {
return
}
c.fullRebuildSem.Release(1)
}
c.fullRebuildSem.Acquire(context.Background(), 1)
go func() {
defer c.fullRebuildSem.Release(1)
c.printChangeDetected(changeType)
defer func() {
// Allow any file system events to arrive back.
// This will block any rebuild on config changes for the
// duration of the sleep.
time.Sleep(2 * time.Second)
}()
defer c.timeTrack(time.Now(), "Rebuilt")
c.commandeerHugoState = newCommandeerHugoState()
err := c.loadConfig(true, true)
if err != nil {
// Set the processing on pause until the state is recovered.
c.paused = true
c.handleBuildErr(err, "Failed to reload config")
} else {
c.paused = false
}
if !c.paused {
_, err := c.copyStatic()
if err != nil {
c.logger.Errorln(err)
return
}
err = c.buildSites()
if err != nil {
c.logger.Errorln(err)
} else if !c.h.buildWatch && !c.Cfg.GetBool("disableLiveReload") {
livereload.ForceRefresh()
}
}
}()
}
// newWatcher creates a new watcher to watch filesystem events.
func (c *commandeer) newWatcher(dirList ...string) (*watcher.Batcher, error) {
if runtime.GOOS == "darwin" {
tweakLimit()
}
staticSyncer, err := newStaticSyncer(c)
if err != nil {
return nil, err
}
watcher, err := watcher.New(1 * time.Second)
if err != nil {
return nil, err
}
for _, d := range dirList {
if d != "" {
_ = watcher.Add(d)
}
}
// Identifies changes to config (config.toml) files.
configSet := make(map[string]bool)
c.logger.Println("Watching for config changes in", strings.Join(c.configFiles, ", "))
for _, configFile := range c.configFiles {
watcher.Add(configFile)
configSet[configFile] = true
}
go func() {
for {
select {
case evs := <-watcher.Events:
c.handleEvents(watcher, staticSyncer, evs, configSet)
if c.showErrorInBrowser && c.errCount() > 0 {
// Need to reload browser to show the error
livereload.ForceRefresh()
}
case err := <-watcher.Errors:
if err != nil {
c.logger.Errorln("Error while watching:", err)
}
}
}
}()
return watcher, nil
}
func (c *commandeer) printChangeDetected(typ string) {
msg := "\nChange"
if typ != "" {
msg += " of " + typ
}
msg += " detected, rebuilding site."
c.logger.Println(msg)
const layout = "2006-01-02 15:04:05.000 -0700"
c.logger.Println(time.Now().Format(layout))
}
const (
configChangeConfig = "config file"
configChangeGoMod = "go.mod file"
)
func (c *commandeer) handleEvents(watcher *watcher.Batcher,
staticSyncer *staticSyncer,
evs []fsnotify.Event,
configSet map[string]bool) {
defer func() {
c.wasError = false
}()
var isHandled bool
for _, ev := range evs {
isConfig := configSet[ev.Name]
configChangeType := configChangeConfig
if isConfig {
if strings.Contains(ev.Name, "go.mod") {
configChangeType = configChangeGoMod
}
}
if !isConfig {
// It may be one of the /config folders
dirname := filepath.Dir(ev.Name)
if dirname != "." && configSet[dirname] {
isConfig = true
}
}
if isConfig {
isHandled = true
if ev.Op&fsnotify.Chmod == fsnotify.Chmod {
continue
}
if ev.Op&fsnotify.Remove == fsnotify.Remove || ev.Op&fsnotify.Rename == fsnotify.Rename {
for _, configFile := range c.configFiles {
counter := 0
for watcher.Add(configFile) != nil {
counter++
if counter >= 100 {
break
}
time.Sleep(100 * time.Millisecond)
}
}
}
// Config file(s) changed. Need full rebuild.
c.fullRebuild(configChangeType)
return
}
}
if isHandled {
return
}
if c.paused {
// Wait for the server to get into a consistent state before
// we continue with processing.
return
}
if len(evs) > 50 {
// This is probably a mass edit of the content dir.
// Schedule a full rebuild for when it slows down.
c.debounce(func() {
c.fullRebuild("")
})
return
}
c.logger.Infoln("Received System Events:", evs)
staticEvents := []fsnotify.Event{}
dynamicEvents := []fsnotify.Event{}
filtered := []fsnotify.Event{}
for _, ev := range evs {
if c.hugo().ShouldSkipFileChangeEvent(ev) {
continue
}
// Check the most specific first, i.e. files.
contentMapped := c.hugo().ContentChanges.GetSymbolicLinkMappings(ev.Name)
if len(contentMapped) > 0 {
for _, mapped := range contentMapped {
filtered = append(filtered, fsnotify.Event{Name: mapped, Op: ev.Op})
}
continue
}
// Check for any symbolic directory mapping.
dir, name := filepath.Split(ev.Name)
contentMapped = c.hugo().ContentChanges.GetSymbolicLinkMappings(dir)
if len(contentMapped) == 0 {
filtered = append(filtered, ev)
continue
}
for _, mapped := range contentMapped {
mappedFilename := filepath.Join(mapped, name)
filtered = append(filtered, fsnotify.Event{Name: mappedFilename, Op: ev.Op})
}
}
evs = filtered
for _, ev := range evs {
ext := filepath.Ext(ev.Name)
baseName := filepath.Base(ev.Name)
istemp := strings.HasSuffix(ext, "~") ||
(ext == ".swp") || // vim
(ext == ".swx") || // vim
(ext == ".tmp") || // generic temp file
(ext == ".DS_Store") || // OSX Thumbnail
baseName == "4913" || // vim
strings.HasPrefix(ext, ".goutputstream") || // gnome
strings.HasSuffix(ext, "jb_old___") || // intelliJ
strings.HasSuffix(ext, "jb_tmp___") || // intelliJ
strings.HasSuffix(ext, "jb_bak___") || // intelliJ
strings.HasPrefix(ext, ".sb-") || // byword
strings.HasPrefix(baseName, ".#") || // emacs
strings.HasPrefix(baseName, "#") // emacs
if istemp {
continue
}
if c.hugo().Deps.SourceSpec.IgnoreFile(ev.Name) {
continue
}
// Sometimes during rm -rf operations a '"": REMOVE' is triggered. Just ignore these
if ev.Name == "" {
continue
}
// Write and rename operations are often followed by CHMOD.
// There may be valid use cases for rebuilding the site on CHMOD,
// but that will require more complex logic than this simple conditional.
// On OS X this seems to be related to Spotlight, see:
// https://github.com/go-fsnotify/fsnotify/issues/15
// A workaround is to put your site(s) on the Spotlight exception list,
// but that may be a little mysterious for most end users.
// So, for now, we skip reload on CHMOD.
// We do have to check for WRITE though. On slower laptops a Chmod
// could be aggregated with other important events, and we still want
// to rebuild on those
if ev.Op&(fsnotify.Chmod|fsnotify.Write|fsnotify.Create) == fsnotify.Chmod {
continue
}
walkAdder := func(path string, f hugofs.FileMetaInfo, err error) error {
if f.IsDir() {
c.logger.Println("adding created directory to watchlist", path)
if err := watcher.Add(path); err != nil {
return err
}
} else if !staticSyncer.isStatic(path) {
// Hugo's rebuilding logic is entirely file based. When you drop a new folder into
// /content on OSX, the above logic will handle future watching of those files,
// but the initial CREATE is lost.
dynamicEvents = append(dynamicEvents, fsnotify.Event{Name: path, Op: fsnotify.Create})
}
return nil
}
// recursively add new directories to watch list
// When mkdir -p is used, only the top directory triggers an event (at least on OSX)
if ev.Op&fsnotify.Create == fsnotify.Create {
if s, err := c.Fs.Source.Stat(ev.Name); err == nil && s.Mode().IsDir() {
_ = helpers.SymbolicWalk(c.Fs.Source, ev.Name, walkAdder)
}
}
if staticSyncer.isStatic(ev.Name) {
staticEvents = append(staticEvents, ev)
} else {
dynamicEvents = append(dynamicEvents, ev)
}
}
if len(staticEvents) > 0 {
c.printChangeDetected("Static files")
if c.Cfg.GetBool("forceSyncStatic") {
c.logger.Printf("Syncing all static files\n")
_, err := c.copyStatic()
if err != nil {
c.logger.Errorln("Error copying static files to publish dir:", err)
return
}
} else {
if err := staticSyncer.syncsStaticEvents(staticEvents); err != nil {
c.logger.Errorln("Error syncing static files to publish dir:", err)
return
}
}
if !c.h.buildWatch && !c.Cfg.GetBool("disableLiveReload") {
// Will block forever trying to write to a channel that nobody is reading if livereload isn't initialized
// force refresh when more than one file
if !c.wasError && len(staticEvents) == 1 {
ev := staticEvents[0]
path := c.hugo().BaseFs.SourceFilesystems.MakeStaticPathRelative(ev.Name)
path = c.firstPathSpec().RelURL(helpers.ToSlashTrimLeading(path), false)
livereload.RefreshPath(path)
} else {
livereload.ForceRefresh()
}
}
}
if len(dynamicEvents) > 0 {
partitionedEvents := partitionDynamicEvents(
c.firstPathSpec().BaseFs.SourceFilesystems,
dynamicEvents)
doLiveReload := !c.h.buildWatch && !c.Cfg.GetBool("disableLiveReload")
onePageName := pickOneWriteOrCreatePath(partitionedEvents.ContentEvents)
c.printChangeDetected("")
c.changeDetector.PrepareNew()
if err := c.rebuildSites(dynamicEvents); err != nil {
c.handleBuildErr(err, "Rebuild failed")
}
if doLiveReload {
if len(partitionedEvents.ContentEvents) == 0 && len(partitionedEvents.AssetEvents) > 0 {
if c.wasError {
livereload.ForceRefresh()
return
}
changed := c.changeDetector.changed()
if c.changeDetector != nil && len(changed) == 0 {
// Nothing has changed.
return
} else if len(changed) == 1 {
pathToRefresh := c.firstPathSpec().RelURL(helpers.ToSlashTrimLeading(changed[0]), false)
livereload.RefreshPath(pathToRefresh)
} else {
livereload.ForceRefresh()
}
}
if len(partitionedEvents.ContentEvents) > 0 {
navigate := c.Cfg.GetBool("navigateToChanged")
// We have fetched the same page above, but it may have
// changed.
var p page.Page
if navigate {
if onePageName != "" {
p = c.hugo().GetContentPage(onePageName)
}
}
if p != nil {
livereload.NavigateToPathForPort(p.RelPermalink(), p.Site().ServerPort())
} else {
livereload.ForceRefresh()
}
}
}
}
}
// dynamicEvents contains events that is considered dynamic, as in "not static".
// Both of these categories will trigger a new build, but the asset events
// does not fit into the "navigate to changed" logic.
type dynamicEvents struct {
ContentEvents []fsnotify.Event
AssetEvents []fsnotify.Event
}
func partitionDynamicEvents(sourceFs *filesystems.SourceFilesystems, events []fsnotify.Event) (de dynamicEvents) {
for _, e := range events {
if sourceFs.IsAsset(e.Name) {
de.AssetEvents = append(de.AssetEvents, e)
} else {
de.ContentEvents = append(de.ContentEvents, e)
}
}
return
}
func pickOneWriteOrCreatePath(events []fsnotify.Event) string {
name := ""
// Some editors (for example notepad.exe on Windows) triggers a change
// both for directory and file. So we pick the longest path, which should
// be the file itself.
for _, ev := range events {
if (ev.Op&fsnotify.Write == fsnotify.Write || ev.Op&fsnotify.Create == fsnotify.Create) && len(ev.Name) > len(name) {
name = ev.Name
}
}
return name
}
func formatByteCount(b uint64) string {
const unit = 1000
if b < unit {
return fmt.Sprintf("%d B", b)
}
div, exp := int64(unit), 0
for n := b / unit; n >= unit; n /= unit {
div *= unit
exp++
}
return fmt.Sprintf("%.1f %cB",
float64(b)/float64(div), "kMGTPE"[exp])
}