hugo/magefile.go
Bjørn Erik Pedersen dea71670c0
Add Hugo Piper with SCSS support and much more
Before this commit, you would have to use page bundles to do image processing etc. in Hugo.

This commit adds

* A new `/assets` top-level project or theme dir (configurable via `assetDir`)
* A new template func, `resources.Get` which can be used to "get a resource" that can be further processed.

This means that you can now do this in your templates (or shortcodes):

```bash
{{ $sunset := (resources.Get "images/sunset.jpg").Fill "300x200" }}
```

This also adds a new `extended` build tag that enables powerful SCSS/SASS support with source maps. To compile this from source, you will also need a C compiler installed:

```
HUGO_BUILD_TAGS=extended mage install
```

Note that you can use output of the SCSS processing later in a non-SCSSS-enabled Hugo.

The `SCSS` processor is a _Resource transformation step_ and it can be chained with the many others in a pipeline:

```bash
{{ $css := resources.Get "styles.scss" | resources.ToCSS | resources.PostCSS | resources.Minify | resources.Fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```

The transformation funcs above have aliases, so it can be shortened to:

```bash
{{ $css := resources.Get "styles.scss" | toCSS | postCSS | minify | fingerprint }}
<link rel="stylesheet" href="{{ $styles.RelPermalink }}" integrity="{{ $styles.Data.Digest }}" media="screen">
```

A quick tip would be to avoid the fingerprinting part, and possibly also the not-superfast `postCSS` when you're doing development, as it allows Hugo to be smarter about the rebuilding.

Documentation will follow, but have a look at the demo repo in https://github.com/bep/hugo-sass-test

New functions to create `Resource` objects:

* `resources.Get` (see above)
* `resources.FromString`: Create a Resource from a string.

New `Resource` transformation funcs:

* `resources.ToCSS`: Compile `SCSS` or `SASS` into `CSS`.
* `resources.PostCSS`: Process your CSS with PostCSS. Config file support (project or theme or passed as an option).
* `resources.Minify`: Currently supports `css`, `js`, `json`, `html`, `svg`, `xml`.
* `resources.Fingerprint`: Creates a fingerprinted version of the given Resource with Subresource Integrity..
* `resources.Concat`: Concatenates a list of Resource objects. Think of this as a poor man's bundler.
* `resources.ExecuteAsTemplate`: Parses and executes the given Resource and data context (e.g. .Site) as a Go template.

Fixes #4381
Fixes #4903
Fixes #4858
2018-07-06 11:46:12 +02:00

279 lines
6.4 KiB
Go

// +build mage
package main
import (
"bytes"
"errors"
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/magefile/mage/mg"
"github.com/magefile/mage/sh"
)
const (
packageName = "github.com/gohugoio/hugo"
noGitLdflags = "-X $PACKAGE/hugolib.BuildDate=$BUILD_DATE"
)
var ldflags = "-X $PACKAGE/hugolib.CommitHash=$COMMIT_HASH -X $PACKAGE/hugolib.BuildDate=$BUILD_DATE"
// allow user to override go executable by running as GOEXE=xxx make ... on unix-like systems
var goexe = "go"
func init() {
if exe := os.Getenv("GOEXE"); exe != "" {
goexe = exe
}
}
func getDep() error {
return sh.Run(goexe, "get", "-u", "github.com/golang/dep/cmd/dep")
}
// Install Go Dep and sync Hugo's vendored dependencies
func Vendor() error {
mg.Deps(getDep)
return sh.Run("dep", "ensure")
}
// Build hugo binary
func Hugo() error {
return sh.RunWith(flagEnv(), goexe, "build", "-ldflags", ldflags, "-tags", buildTags(), packageName)
}
// Build hugo binary with race detector enabled
func HugoRace() error {
return sh.RunWith(flagEnv(), goexe, "build", "-race", "-ldflags", ldflags, "-tags", buildTags(), packageName)
}
// Install hugo binary
func Install() error {
return sh.RunWith(flagEnv(), goexe, "install", "-ldflags", ldflags, "-tags", buildTags(), packageName)
}
func flagEnv() map[string]string {
hash, _ := sh.Output("git", "rev-parse", "--short", "HEAD")
return map[string]string{
"PACKAGE": packageName,
"COMMIT_HASH": hash,
"BUILD_DATE": time.Now().Format("2006-01-02T15:04:05Z0700"),
}
}
func Generate() error {
return sh.RunWith(flagEnv(), goexe, "generate", path.Join(packageName, "tpl/tplimpl/embedded/generate"))
}
// Build hugo without git info
func HugoNoGitInfo() error {
ldflags = noGitLdflags
return Hugo()
}
var docker = sh.RunCmd("docker")
// Build hugo Docker container
func Docker() error {
if err := docker("build", "-t", "hugo", "."); err != nil {
return err
}
// yes ignore errors here
docker("rm", "-f", "hugo-build")
if err := docker("run", "--name", "hugo-build", "hugo ls /go/bin"); err != nil {
return err
}
if err := docker("cp", "hugo-build:/go/bin/hugo", "."); err != nil {
return err
}
return docker("rm", "hugo-build")
}
// Run tests and linters
func Check() {
if strings.Contains(runtime.Version(), "1.8") {
// Go 1.8 doesn't play along with go test ./... and /vendor.
// We could fix that, but that would take time.
fmt.Printf("Skip Check on %s\n", runtime.Version())
return
}
mg.Deps(Test386, Fmt, Vet)
// don't run two tests in parallel, they saturate the CPUs anyway, and running two
// causes memory issues in CI.
mg.Deps(TestRace)
}
// Run tests in 32-bit mode
// Note that we don't run with the extended tag. Currently not supported in 32 bit.
func Test386() error {
return sh.RunWith(map[string]string{"GOARCH": "386"}, goexe, "test", "./...")
}
// Run tests
func Test() error {
return sh.Run(goexe, "test", "./...", "-tags", buildTags())
}
// Run tests with race detector
func TestRace() error {
return sh.Run(goexe, "test", "-race", "./...", "-tags", buildTags())
}
// Run gofmt linter
func Fmt() error {
if !isGoLatest() {
return nil
}
pkgs, err := hugoPackages()
if err != nil {
return err
}
failed := false
first := true
for _, pkg := range pkgs {
files, err := filepath.Glob(filepath.Join(pkg, "*.go"))
if err != nil {
return nil
}
for _, f := range files {
// gofmt doesn't exit with non-zero when it finds unformatted code
// so we have to explicitly look for output, and if we find any, we
// should fail this target.
s, err := sh.Output("gofmt", "-l", f)
if err != nil {
fmt.Printf("ERROR: running gofmt on %q: %v\n", f, err)
failed = true
}
if s != "" {
if first {
fmt.Println("The following files are not gofmt'ed:")
first = false
}
failed = true
fmt.Println(s)
}
}
}
if failed {
return errors.New("improperly formatted go files")
}
return nil
}
var pkgPrefixLen = len("github.com/gohugoio/hugo")
func hugoPackages() ([]string, error) {
mg.Deps(getDep)
s, err := sh.Output(goexe, "list", "./...")
if err != nil {
return nil, err
}
pkgs := strings.Split(s, "\n")
for i := range pkgs {
pkgs[i] = "." + pkgs[i][pkgPrefixLen:]
}
return pkgs, nil
}
// Run golint linter
func Lint() error {
pkgs, err := hugoPackages()
if err != nil {
return err
}
failed := false
for _, pkg := range pkgs {
// We don't actually want to fail this target if we find golint errors,
// so we don't pass -set_exit_status, but we still print out any failures.
if _, err := sh.Exec(nil, os.Stderr, nil, "golint", pkg); err != nil {
fmt.Printf("ERROR: running go lint on %q: %v\n", pkg, err)
failed = true
}
}
if failed {
return errors.New("errors running golint")
}
return nil
}
// Run go vet linter
func Vet() error {
mg.Deps(getDep)
if err := sh.Run(goexe, "vet", "./..."); err != nil {
return fmt.Errorf("error running govendor: %v", err)
}
return nil
}
// Generate test coverage report
func TestCoverHTML() error {
mg.Deps(getDep)
const (
coverAll = "coverage-all.out"
cover = "coverage.out"
)
f, err := os.Create(coverAll)
if err != nil {
return err
}
defer f.Close()
if _, err := f.Write([]byte("mode: count")); err != nil {
return err
}
pkgs, err := hugoPackages()
if err != nil {
return err
}
for _, pkg := range pkgs {
if err := sh.Run(goexe, "test", "-coverprofile="+cover, "-covermode=count", pkg); err != nil {
return err
}
b, err := ioutil.ReadFile(cover)
if err != nil {
if os.IsNotExist(err) {
continue
}
return err
}
idx := bytes.Index(b, []byte{'\n'})
b = b[idx+1:]
if _, err := f.Write(b); err != nil {
return err
}
}
if err := f.Close(); err != nil {
return err
}
return sh.Run(goexe, "tool", "cover", "-html="+coverAll)
}
// Verify that vendored packages match git HEAD
func CheckVendor() error {
if err := sh.Run("git", "diff-index", "--quiet", "HEAD", "vendor/"); err != nil {
// yes, ignore errors from this, not much we can do.
sh.Exec(nil, os.Stdout, os.Stderr, "git", "diff", "vendor/")
return errors.New("check-vendor target failed: vendored packages out of sync")
}
return nil
}
func isGoLatest() bool {
return strings.Contains(runtime.Version(), "1.10")
}
func buildTags() string {
// To build the extended Hugo SCSS/SASS enabled version, build with
// HUGO_BUILD_TAGS=extended mage install etc.
if envtags := os.Getenv("HUGO_BUILD_TAGS"); envtags != "" {
return envtags
}
return "none"
}