| // Copyright 2019 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.skydoc.renderer; |
| |
| import com.google.devtools.common.options.OptionsParser; |
| import java.io.IOException; |
| |
| /** |
| * Main entry point for Renderer binary. |
| * |
| * <p>This Renderer will take in raw stardoc_proto protos as input and produce rich markdown output. |
| */ |
| public class RendererMain { |
| public static void main(String[] args) throws IOException { |
| OptionsParser parser = OptionsParser.builder().optionsClasses(RendererOptions.class).build(); |
| parser.parseAndExitUponError(args); |
| RendererOptions rendererOptions = parser.getOptions(RendererOptions.class); |
| |
| if (rendererOptions.inputPath.isEmpty() || rendererOptions.outputFilePath.isEmpty()) { |
| throw new IllegalArgumentException( |
| "Both --input and --output must be specified. Usage: " |
| + "{renderer_bin} --input=\"{input_proto_file}\" --output=\"{output_file}\""); |
| } |
| |
| RendererMain rendererMain = new RendererMain(); |
| String inputPath = rendererOptions.inputPath; |
| String outputPath = rendererOptions.outputFilePath; |
| rendererMain.copyProtoFile(inputPath, outputPath); |
| } |
| |
| // TODO(kendalllane, blossomsm): Implement proto to markdown conversion. |
| /** Copies the input proto file to the output location */ |
| public void copyProtoFile(String inputPath, String outputPath) throws IOException { |
| ProtoFileAccessor fileAccessor = new FileSystemAccessor(); |
| if (fileAccessor.fileExists(inputPath)) { |
| byte[] inputContent = fileAccessor.getProtoContent(inputPath); |
| fileAccessor.writeToOutputLocation(outputPath, inputContent); |
| } else { |
| throw new IOException(inputPath + " does not exist."); |
| } |
| } |
| } |