62 lines
2.2 KiB
Java
62 lines
2.2 KiB
Java
/*
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* Copyright (C) 2016 Google Inc.
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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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*/
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package com.google.copybara;
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import com.google.common.base.Preconditions;
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import com.google.devtools.build.lib.skylarkinterface.StarlarkBuiltin;
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import com.google.devtools.build.lib.skylarkinterface.StarlarkDocumentationCategory;
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import com.google.devtools.build.lib.skylarkinterface.StarlarkMethod;
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import com.google.devtools.build.lib.syntax.Starlark;
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import com.google.devtools.build.lib.syntax.StarlarkValue;
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import java.nio.file.Path;
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import java.nio.file.attribute.BasicFileAttributes;
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/** Represents file attributes exposed to Skylark. */
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@SuppressWarnings("unused")
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@StarlarkBuiltin(
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name = "PathAttributes",
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category = StarlarkDocumentationCategory.BUILTIN,
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doc = "Represents a path attributes like size.")
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public class CheckoutPathAttributes implements StarlarkValue {
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private final Path path;
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private final BasicFileAttributes attributes;
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CheckoutPathAttributes(Path path, BasicFileAttributes attributes) {
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this.path = Preconditions.checkNotNull(path);
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this.attributes = Preconditions.checkNotNull(attributes);
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}
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@StarlarkMethod(
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name = "size",
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doc = "The size of the file. Throws an error if file size > 2GB.",
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structField = true)
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public int size() throws Exception {
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long size = attributes.size();
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try {
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return Math.toIntExact(size);
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} catch (ArithmeticException e) {
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throw Starlark.errorf("File %s is too big to compute the size: %d bytes", path, size);
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}
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}
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@StarlarkMethod(name = "symlink",
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doc = "Returns true if it is a symlink", structField = true)
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public boolean isSymlink() {
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return attributes.isSymbolicLink();
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}
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}
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