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| author | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2018-08-05 12:13:49 +0300 |
|---|---|---|
| committer | Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com> | 2018-08-06 20:58:41 +0300 |
| commit | 789ef8c639e4621abd36da530bcb5942ac9297da (patch) | |
| tree | f225fc3663affc49805f1d309b77b096d40fc8f6 /transform/metainject/hugogenerator.go | |
| parent | 71931b30b1813b146aaa60f5cdab16c0f9ebebdb (diff) | |
Add support for minification of final output
Hugo Pipes added minification support for resources fetched via ´resources.Get` and similar.
This also adds support for minification of the final output for supported output formats: HTML, XML, SVG, CSS, JavaScript, JSON.
To enable, run Hugo with the `--minify` flag:
```bash
hugo --minify
```
This commit is also a major spring cleaning of the `transform` package to allow the new minification step fit into that processing chain.
Fixes #1251
Diffstat (limited to 'transform/metainject/hugogenerator.go')
| -rw-r--r-- | transform/metainject/hugogenerator.go | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/transform/metainject/hugogenerator.go b/transform/metainject/hugogenerator.go new file mode 100644 index 000000000..513b21228 --- /dev/null +++ b/transform/metainject/hugogenerator.go @@ -0,0 +1,54 @@ +// Copyright 2018 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 metainject + +import ( + "bytes" + "fmt" + "regexp" + + "github.com/gohugoio/hugo/helpers" + "github.com/gohugoio/hugo/transform" +) + +var metaTagsCheck = regexp.MustCompile(`(?i)<meta\s+name=['|"]?generator['|"]?`) +var hugoGeneratorTag = fmt.Sprintf(`<meta name="generator" content="Hugo %s" />`, helpers.CurrentHugoVersion) + +// HugoGenerator injects a meta generator tag for Hugo if none present. +func HugoGenerator(ft transform.FromTo) error { + b := ft.From().Bytes() + if metaTagsCheck.Match(b) { + if _, err := ft.To().Write(b); err != nil { + helpers.DistinctWarnLog.Println("Failed to inject Hugo generator tag:", err) + } + return nil + } + + head := "<head>" + replace := []byte(fmt.Sprintf("%s\n\t%s", head, hugoGeneratorTag)) + newcontent := bytes.Replace(b, []byte(head), replace, 1) + + if len(newcontent) == len(b) { + head := "<HEAD>" + replace := []byte(fmt.Sprintf("%s\n\t%s", head, hugoGeneratorTag)) + newcontent = bytes.Replace(b, []byte(head), replace, 1) + } + + if _, err := ft.To().Write(newcontent); err != nil { + helpers.DistinctWarnLog.Println("Failed to inject Hugo generator tag:", err) + } + + return nil + +} |