1 files changed, 71 insertions, 0 deletions
diff --git a/src/main/java/jp/ac/tsukuba/openjava/SunJavaCompiler.java b/src/main/java/jp/ac/tsukuba/openjava/SunJavaCompiler.java
new file mode 100644
index 0000000..ef9ba90
--- /dev/null
+++ b/src/main/java/jp/ac/tsukuba/openjava/SunJavaCompiler.java
@@ -0,0 +1,71 @@
+/*
+ * SunJavaCompiler.java
+ * Workaround for Runtime.exec() environment handling incompatibility..
+ *
+ * A work based on jp.ac.tsukuba.openjava.SunJavaCompiler
+ *
+ * Apr 16, 1999  Michiaki Tatsubori (mt@is.tsukuba.ac.jp)
+ * Oct  1, 1999  Shiro Kawai (shiro@squareusa.com)
+ * Nov 22, 1999  Michiaki Tatsubori
+ */
+package jp.ac.tsukuba.openjava;
+
+import java.io.BufferedInputStream;
+import java.io.InputStream;
+
+import io.devnulllabs.openjava.ojc.JavaCompiler;
+
+/**
+ * The class <code>SunJavaCompiler</code> is an adapter for Sun's javac.
+ *
+ * Message-Id: 19990930154627G.shiro@squareusa.com
+ * <p>
+ * I tried OpenJava1.0a1 on my IRIX box w/ SGI's JDK1.2
+ * and had a problem to run ojc.  Somehow, Runtime.exec()
+ * didn't pass all the environment variables to the invoked
+ * process (more specifically, it only passed TZ).
+ * Consequently the CLASSPATH env was not passed to javac kicked
+ * by JP.ac.tsukuba.openjava.SunJavaCompiler.complie(), which
+ * prevented ojc from finishing compilation.
+ * <p>
+ * So far I couldn't find exact specification about how the
+ * environment variables should be treated in Java specification
+ * and API documents.  I guess it may depend on platforms.
+ * <p>
+ * We avoided the problem by explicitly passing CLASSPATH to
+ * the subprocess my modifying SunJavaCompiler class, but wondering
+ * if there'd be a better way to handle it...
+ */
+public class SunJavaCompiler implements JavaCompiler {
+    public static void main(String[] args) {
+        new SunJavaCompiler().compile(args);
+    }
+
+    public void compile(String[] args) {
+        Runtime runtime = Runtime.getRuntime();
+        try {
+            String classpath =
+                "CLASSPATH=" + System.getProperty("java.class.path");
+            String[] envp = new String[1];
+            envp[0] = classpath;
+            Process p = runtime.exec("javac " + strs2str(args), envp);
+            InputStream in = new BufferedInputStream(p.getErrorStream());
+            byte[] buf = new byte[1024];
+            for (int len = in.read(buf); len != -1; len = in.read(buf)) {
+                System.err.write(buf, 0, len);
+            }
+            p.waitFor();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static String strs2str(String[] strs) {
+        StringBuffer buf = new StringBuffer();
+        for (int i = 0; i < strs.length; ++i) {
+            buf.append(strs[i]).append(" ");
+        }
+        return buf.toString();
+    }
+
+}