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https://github.com/gohugoio/hugo.git
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33c0938cd5
While very useful on its own (and combined with the passthrough render hooks), this also serves as a proof of concept of using WASI (WebAssembly System Interface) modules in Hugo. This will be marked _experimental_ in the documentation. Not because it will be removed or changed in a dramatic way, but we need to think a little more how to best set up/configure similar services, define where these WASM files gets stored, maybe we can allow user provided WASM files plugins via Hugo Modules mounts etc. See these issues for more context: * https://github.com/gohugoio/hugo/issues/12736 * https://github.com/gohugoio/hugo/issues/12737 See #11927
113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
// Copyright 2018 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package hugio
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import (
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"io"
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)
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// As implemented by strings.Builder.
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type FlexiWriter interface {
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io.Writer
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io.ByteWriter
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WriteString(s string) (int, error)
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WriteRune(r rune) (int, error)
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}
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type multiWriteCloser struct {
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io.Writer
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closers []io.WriteCloser
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}
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func (m multiWriteCloser) Close() error {
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var err error
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for _, c := range m.closers {
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if closeErr := c.Close(); closeErr != nil {
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err = closeErr
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}
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}
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return err
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}
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// NewMultiWriteCloser creates a new io.WriteCloser that duplicates its writes to all the
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// provided writers.
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func NewMultiWriteCloser(writeClosers ...io.WriteCloser) io.WriteCloser {
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writers := make([]io.Writer, len(writeClosers))
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for i, w := range writeClosers {
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writers[i] = w
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}
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return multiWriteCloser{Writer: io.MultiWriter(writers...), closers: writeClosers}
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}
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// ToWriteCloser creates an io.WriteCloser from the given io.Writer.
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// If it's not already, one will be created with a Close method that does nothing.
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func ToWriteCloser(w io.Writer) io.WriteCloser {
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if rw, ok := w.(io.WriteCloser); ok {
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return rw
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}
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return struct {
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io.Writer
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io.Closer
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}{
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w,
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io.NopCloser(nil),
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}
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}
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// ToReadCloser creates an io.ReadCloser from the given io.Reader.
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// If it's not already, one will be created with a Close method that does nothing.
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func ToReadCloser(r io.Reader) io.ReadCloser {
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if rc, ok := r.(io.ReadCloser); ok {
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return rc
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}
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return struct {
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io.Reader
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io.Closer
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}{
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r,
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io.NopCloser(nil),
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}
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}
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type ReadWriteCloser interface {
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io.Reader
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io.Writer
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io.Closer
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}
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// PipeReadWriteCloser is a convenience type to create a pipe with a ReadCloser and a WriteCloser.
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type PipeReadWriteCloser struct {
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*io.PipeReader
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*io.PipeWriter
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}
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// NewPipeReadWriteCloser creates a new PipeReadWriteCloser.
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func NewPipeReadWriteCloser() PipeReadWriteCloser {
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pr, pw := io.Pipe()
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return PipeReadWriteCloser{pr, pw}
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}
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func (c PipeReadWriteCloser) Close() (err error) {
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if err = c.PipeReader.Close(); err != nil {
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return
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}
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err = c.PipeWriter.Close()
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return
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}
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func (c PipeReadWriteCloser) WriteString(s string) (int, error) {
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return c.PipeWriter.Write([]byte(s))
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}
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