/*
* Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
import java.io.*;
import java.util.*;
class jvmtiEnvFill {
public static void main(String[] args) throws IOException {
if (args.length != 3) {
System.err.println("usage: <filledFile> <stubFile> <resultFile>");
System.exit(1);
}
String filledFN = args[0];
String stubFN = args[1];
String resultFN = args[2];
SourceFile filledSF = new SourceFile(filledFN);
SourceFile stubSF = new SourceFile(stubFN);
stubSF.fill(filledSF);
PrintWriter out = new PrintWriter(new FileWriter(resultFN));
stubSF.output(out);
out.close();
}
}
class SourceFile {
static final String endFilePrefix = "// end file prefix";
static final String functionPrefix = "JvmtiEnv::";
final String fn;
LineNumberReader in;
String line;
List<String> top = new ArrayList<String>();
List<String> before = new ArrayList<String>();
boolean inFilePrefix = true;
List<Function> functions = new ArrayList<Function>();
Map<String, Function> functionMap = new HashMap<String, Function>();
class Function {
String name;
String args;
String compareArgs;
List comment;
List<String> body = new ArrayList<String>();
Function() throws IOException {
line = in.readLine();
String trimmed = line.trim();
if (!trimmed.startsWith(functionPrefix)) {
error("expected '" + functionPrefix + "'");
}
int index = trimmed.indexOf('(', functionPrefix.length());
if (index == -1) {
error("missing open paren");
}
name = trimmed.substring(functionPrefix.length(), index);
int index2 = trimmed.indexOf(')', index);
if (index2 == -1) {
error("missing close paren - must be on same line");
}
args = trimmed.substring(index+1, index2);
compareArgs = args.replaceAll("\\s", "");
String tail = trimmed.substring(index2+1).trim();
if (!tail.equals("{")) {
error("function declaration first line must end with open bracket '{', instead got '" +
tail + "'");
}
while(true) {
line = in.readLine();
if (line == null) {
line = ""; // so error does not look wierd
error("unexpected end of file");
}
if (line.startsWith("}")) {
break;
}
body.add(line);
}
String expected = "} /* end " + name + " */";
trimmed = line.replaceAll("\\s","");
if (!trimmed.equals(expected.replaceAll("\\s",""))) {
error("function end is malformed - should be: " + expected);
}
// copy over the comment prefix
comment = before;
before = new ArrayList<String>();
}
void remove() {
functionMap.remove(name);
}
String fileName() {
return fn;
}
void fill(Function filledFunc) {
if (filledFunc == null) {
System.err.println("Warning: function " + name + " missing from filled file");
body.add(0, " /*** warning: function added and not filled in ***/");
} else {
int fbsize = filledFunc.body.size();
int bsize = body.size();
if (fbsize > bsize || !body.subList(bsize-fbsize,bsize).equals(filledFunc.body)) {
// it has actually been filled in
body = filledFunc.body;
if (!compareArgs.equals(filledFunc.compareArgs)) {
System.err.println("Warning: function " + name +
": filled and stub arguments differ");
System.err.println(" old (filled): " + filledFunc.args);
System.err.println(" new (stub): " + args);
body.add(0, " /*** warning: arguments changed, were: " +
filledFunc.args + " ***/");
}
}
filledFunc.remove(); // mark used
}
}
void output(PrintWriter out) {
Iterator it = comment.iterator();
while (it.hasNext()) {
out.println(it.next());
}
out.println("jvmtiError");
out.print(functionPrefix);
out.print(name);
out.print('(');
out.print(args);
out.println(") {");
it = body.iterator();
while (it.hasNext()) {
out.println(it.next());
}
out.print("} /* end ");
out.print(name);
out.println(" */");
}
}
SourceFile(String fn) throws IOException {
this.fn = fn;
Reader reader = new FileReader(fn);
in = new LineNumberReader(reader);
while (readGaps()) {
Function func = new Function();
functionMap.put(func.name, func);
functions.add(func);
}
in.close();
}
void error(String msg) {
System.err.println("Fatal error parsing file: " + fn);
System.err.println("Line number: " + in.getLineNumber());
System.err.println("Error message: " + msg);
System.err.println("Source line: " + line);
System.exit(1);
}
boolean readGaps() throws IOException {
while(true) {
line = in.readLine();
if (line == null) {
return false; // end of file
}
if (!inFilePrefix && line.startsWith("}")) {
error("unexpected close bracket in first column, outside of function.\n");
}
String trimmed = line.trim();
if (line.startsWith("jvmtiError")) {
if (trimmed.equals("jvmtiError")) {
if (inFilePrefix) {
error("unexpected 'jvmtiError' line in file prefix.\n" +
"is '" + endFilePrefix + "'... line missing?");
}
return true; // beginning of a function
} else {
error("extra characters at end of 'jvmtiError'");
}
}
if (inFilePrefix) {
top.add(line);
} else {
trimmed = line.trim();
if (!trimmed.equals("") && !trimmed.startsWith("//") && !trimmed.startsWith("#")) {
error("only comments and blank lines allowed between functions");
}
before.add(line);
}
if (line.replaceAll("\\s","").toLowerCase().startsWith(endFilePrefix.replaceAll("\\s",""))) {
if (!inFilePrefix) {
error("excess '" + endFilePrefix + "'");
}
inFilePrefix = false;
}
}
}
void fill(SourceFile filledSF) {
// copy beginning of file straight from filled file
top = filledSF.top;
// file in functions
Iterator it = functions.iterator();
while (it.hasNext()) {
Function stubFunc = (Function)(it.next());
Function filledFunc = (Function)filledSF.functionMap.get(stubFunc.name);
stubFunc.fill(filledFunc);
}
if (filledSF.functionMap.size() > 0) {
System.err.println("Warning: the following functions were present in the " +
"filled file but missing in the stub file and thus not copied:");
it = filledSF.functionMap.values().iterator();
while (it.hasNext()) {
System.err.println(" " + ((Function)(it.next())).name);
}
}
}
void output(PrintWriter out) {
Iterator it = top.iterator();
while (it.hasNext()) {
out.println(it.next());
}
it = functions.iterator();
while (it.hasNext()) {
Function stubFunc = (Function)(it.next());
stubFunc.output(out);
}
}
}