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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.codegen;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import java.util.StringTokenizer;
/**
* Encapsulates data extracted from system properties.
*
* @author <a href="gv@yahoo-inc.com">Gjoran Voldengen</a>
*/
public class MakeConfigProperties {
private final List<String> legalLanguages = Arrays.asList("java", "cpp", "cppng" );
final File destDir;
final File[] specFiles;
final String language;
final String dirInRoot; // Where within fileroot to store generated class files
final boolean dumpTree;
final boolean generateFrameworkCode;
MakeConfigProperties() throws PropertyException {
destDir = checkDestinationDir();
specFiles = checkSpecificationFiles();
language = checkLanguage();
dirInRoot = checkDirInRoot();
dumpTree = System.getProperty("config.dumpTree") != null &&
System.getProperty("config.dumpTree").equalsIgnoreCase("true");
generateFrameworkCode = System.getProperty("config.useFramework") == null ||
System.getProperty("config.useFramework").equalsIgnoreCase("true");
}
private File checkDestinationDir() throws PropertyException {
String destination = System.getProperty("config.dest");
if (destination == null)
throw new PropertyException("Missing property: config.dest.");
File dir = new File(destination);
if (!dir.isDirectory()) {
throw new PropertyException("Could not find directory: " + dir.getPath());
}
return dir;
}
private String checkDirInRoot() throws PropertyException {
String dirInRoot = System.getProperty("config.subdir");
// Optional parameter
if (dirInRoot == null) { return null; }
File f = new File(destDir, dirInRoot);
if (!f.isDirectory()) {
throw new PropertyException("Could not find directory: " + f.getPath());
}
return dirInRoot;
}
/**
* @return Desired programming language of generated code, default is "java".
* @throws PropertyException if supplied language is not a legal language.
*/
private String checkLanguage() throws PropertyException {
String inputLang = System.getProperty("config.lang", "java").toLowerCase();
if (! legalLanguages.contains(inputLang)) {
throw new PropertyException
("Unsupported code language: '" + inputLang + "'. Supported languages are: " + legalLanguages);
}
return inputLang;
}
private static File[] checkSpecificationFiles() throws PropertyException {
String string = System.getProperty("config.spec");
if (string == null)
throw new PropertyException("Missing property: config.spec.");
StringTokenizer st = new StringTokenizer(string, ",");
if (st.countTokens() == 0)
throw new PropertyException("Missing property: config.spec.");
File[] files = new File[st.countTokens()];
for (int i = 0; st.hasMoreElements(); i++) {
files[i] = new File((String) st.nextElement());
if (!files[i].isFile())
throw new PropertyException("Could not read file " + files[i].getPath());
}
return files;
}
}
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