mirror of https://github.com/k3s-io/k3s
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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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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*/
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package main
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import "bytes"
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// Blocks of ``` need to have blank lines on both sides or they don't look
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// right in HTML.
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func checkPreformatted(filePath string, fileBytes []byte) ([]byte, error) {
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f := splitByPreformatted(fileBytes)
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f = append(fileBlocks{{false, []byte{}}}, f...)
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f = append(f, fileBlock{false, []byte{}})
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output := []byte(nil)
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for i := 1; i < len(f)-1; i++ {
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prev := &f[i-1]
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block := &f[i]
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next := &f[i+1]
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if !block.preformatted {
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continue
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}
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neededSuffix := []byte("\n\n")
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for !bytes.HasSuffix(prev.data, neededSuffix) {
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prev.data = append(prev.data, '\n')
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}
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for !bytes.HasSuffix(block.data, neededSuffix) {
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block.data = append(block.data, '\n')
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if bytes.HasPrefix(next.data, []byte("\n")) {
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// don't change the number of newlines unless needed.
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next.data = next.data[1:]
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if len(next.data) == 0 {
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f = append(f[:i+1], f[i+2:]...)
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}
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}
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}
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}
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for _, block := range f {
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output = append(output, block.data...)
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}
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return output, nil
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}
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