| // Copyright 2021 Google Inc. 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 response |
| |
| import ( |
| "io" |
| "io/ioutil" |
| "unicode" |
| ) |
| |
| const noQuote = '\x00' |
| |
| // ReadRspFile reads a file in Ninja's response file format and returns its contents. |
| func ReadRspFile(r io.Reader) ([]string, error) { |
| var files []string |
| var file []byte |
| |
| buf, err := ioutil.ReadAll(r) |
| if err != nil { |
| return nil, err |
| } |
| |
| isEscaping := false |
| quotingStart := byte(noQuote) |
| for _, c := range buf { |
| switch { |
| case isEscaping: |
| if quotingStart == '"' { |
| if !(c == '"' || c == '\\') { |
| // '\"' or '\\' will be escaped under double quoting. |
| file = append(file, '\\') |
| } |
| } |
| file = append(file, c) |
| isEscaping = false |
| case c == '\\' && quotingStart != '\'': |
| isEscaping = true |
| case quotingStart == noQuote && (c == '\'' || c == '"'): |
| quotingStart = c |
| case quotingStart != noQuote && c == quotingStart: |
| quotingStart = noQuote |
| case quotingStart == noQuote && unicode.IsSpace(rune(c)): |
| // Current character is a space outside quotes |
| if len(file) != 0 { |
| files = append(files, string(file)) |
| } |
| file = file[:0] |
| default: |
| file = append(file, c) |
| } |
| } |
| |
| if len(file) != 0 { |
| files = append(files, string(file)) |
| } |
| |
| return files, nil |
| } |