// Copyright 2014 The Bazel 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 com.google.devtools.build.lib.actions; import com.google.common.annotations.VisibleForTesting; import com.google.devtools.build.lib.util.FileType; import com.google.devtools.build.lib.vfs.PathFragment; /** * Support for parameter file generation (as used by gcc and other tools, e.g. * {@code gcc @param_file}. Note that the parameter file needs to be explicitly * deleted after use. Different tools require different parameter file formats, * which can be selected via the {@link ParameterFileType} enum. * *
The default charset is ISO-8859-1 (latin1). This also has to match the * expectation of the tool. * *
Don't use this class for new code. Use the ParameterFileWriteAction
* instead!
*/
public class ParameterFile {
/**
* Different styles of parameter files.
*/
public static enum ParameterFileType {
/**
* A parameter file with every parameter on a separate line. This format
* cannot handle newlines in parameters. It is currently used for most
* tools, but may not be interpreted correctly if parameters contain
* white space or other special characters. It should be avoided for new
* development.
*/
UNQUOTED,
/**
* A parameter file where each parameter is correctly quoted for shell
* use, and separated by white space (space, tab, newline). This format is
* safe for all characters, but must be specially supported by the tool. In
* particular, it must not be used with gcc and related tools, which do not
* support this format as it is.
*/
SHELL_QUOTED;
}
@VisibleForTesting
public static final FileType PARAMETER_FILE = FileType.of(".params");
/**
* Creates a parameter file with the given parameters.
*/
private ParameterFile() {
}
/**
* Derives an path from a given path by appending ".params"
.
*/
public static PathFragment derivePath(PathFragment original) {
return derivePath(original, "2");
}
/**
* Derives an path from a given path by appending ".params"
.
*/
public static PathFragment derivePath(PathFragment original, String flavor) {
return original.replaceName(original.getBaseName() + "-" + flavor + ".params");
}
}