e55bd423df
The current implementation causes inputs listed in an rsp file used with sbox to be duplicated 3 times in the build.ninja file; once as a dependency of the rule, once in the rspfile_content field of the rule with the paths rewritten to be relative to the sandbox, and once in the rule to write the sbox manifest. When RBE is enabled it also gets a fourth copy in the list of files to be treated as inputs by rewrapper. Reduce this to a single copy by using "$in" for the rspfile_content so that the files only have to be listed in the input dependencies of the rule, and then add support to sbox to rewrite the rsp file while copying it into the sandbox, and pass it to rewrapper as well. Test: m lint-check Change-Id: I3f46f61119508d39a8bb231c99fc130153fb6f04
112 lines
2.5 KiB
Go
112 lines
2.5 KiB
Go
// Copyright 2021 Google Inc. 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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//
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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 response
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import (
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"io"
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"io/ioutil"
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"strings"
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"unicode"
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)
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const noQuote = '\x00'
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// ReadRspFile reads a file in Ninja's response file format and returns its contents.
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func ReadRspFile(r io.Reader) ([]string, error) {
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var files []string
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var file []byte
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buf, err := ioutil.ReadAll(r)
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if err != nil {
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return nil, err
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}
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isEscaping := false
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quotingStart := byte(noQuote)
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for _, c := range buf {
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switch {
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case isEscaping:
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if quotingStart == '"' {
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if !(c == '"' || c == '\\') {
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// '\"' or '\\' will be escaped under double quoting.
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file = append(file, '\\')
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}
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}
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file = append(file, c)
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isEscaping = false
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case c == '\\' && quotingStart != '\'':
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isEscaping = true
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case quotingStart == noQuote && (c == '\'' || c == '"'):
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quotingStart = c
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case quotingStart != noQuote && c == quotingStart:
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quotingStart = noQuote
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case quotingStart == noQuote && unicode.IsSpace(rune(c)):
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// Current character is a space outside quotes
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if len(file) != 0 {
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files = append(files, string(file))
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}
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file = file[:0]
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default:
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file = append(file, c)
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}
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}
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if len(file) != 0 {
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files = append(files, string(file))
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}
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return files, nil
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}
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func rspUnsafeChar(r rune) bool {
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switch {
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case 'A' <= r && r <= 'Z',
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'a' <= r && r <= 'z',
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'0' <= r && r <= '9',
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r == '_',
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r == '+',
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r == '-',
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r == '.',
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r == '/':
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return false
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default:
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return true
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}
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}
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var rspEscaper = strings.NewReplacer(`'`, `'\''`)
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// WriteRspFile writes a list of files to a file in Ninja's response file format.
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func WriteRspFile(w io.Writer, files []string) error {
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for i, f := range files {
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if i != 0 {
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_, err := io.WriteString(w, " ")
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if err != nil {
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return err
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}
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}
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if strings.IndexFunc(f, rspUnsafeChar) != -1 {
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f = `'` + rspEscaper.Replace(f) + `'`
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}
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_, err := io.WriteString(w, f)
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if err != nil {
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return err
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}
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}
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return nil
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}
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