com.codnos.dbgp.internal.commands.breakpoint.BreakpointSetCommandHandler Maven / Gradle / Ivy

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/*
 * Copyright 2016 Codnos Ltd.
 *
 * 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.codnos.dbgp.internal.commands.breakpoint;

import com.codnos.dbgp.api.Breakpoint;
import com.codnos.dbgp.api.DebuggerEngine;
import com.codnos.dbgp.internal.arguments.ArgumentConfiguration;
import com.codnos.dbgp.internal.arguments.Arguments;
import com.codnos.dbgp.internal.handlers.DBGpRegularCommandHandler;

import java.util.Base64;
import java.util.Optional;

import static com.codnos.dbgp.api.Breakpoint.aBreakpoint;
import static com.codnos.dbgp.api.Breakpoint.aLineBreakpoint;
import static com.codnos.dbgp.internal.commands.breakpoint.BreakpointConverter.breakpointStateAsString;
import static com.codnos.dbgp.internal.xml.XmlBuilder.e;

public class BreakpointSetCommandHandler extends DBGpRegularCommandHandler {

    private final Base64.Decoder base64 = Base64.getDecoder();

    public BreakpointSetCommandHandler(DebuggerEngine debuggerEngine, ArgumentConfiguration argumentConfiguration) {
        super(debuggerEngine, argumentConfiguration);
    }

    @Override
    protected boolean canHandle(String msg) {
        return msg.startsWith("breakpoint_set");
    }

    @Override
    protected String handle(Arguments arguments, DebuggerEngine debuggerEngine) {
        int transactionId = arguments.getInteger("i");
        Breakpoint breakpointToSet = breakpointFrom(arguments);
        Breakpoint resultingBreakpoint = debuggerEngine.breakpointSet(breakpointToSet);
        return e("response", "urn:debugger_protocol_v1")
                .a("command", "breakpoint_set")
                .a("transaction_id", transactionId)
                .a("state", breakpointStateAsString(resultingBreakpoint))
                .a("id", resultingBreakpoint.getBreakpointId())
                .asString();
    }

    private Breakpoint breakpointFrom(Arguments arguments) {
        Breakpoint.BreakpointBuilder builder = aBreakpoint();
        builder.withType(arguments.getString("t"));
        if (arguments.hasValueFor("f")) {
            builder.withFileUri(arguments.getString("f"));
        }
        if (arguments.hasValueFor("n")) {
            builder.withLineNumber(arguments.getInteger("n"));
        }
        if (arguments.hasValueFor("r")) {
            builder.withTemporary(arguments.getBoolean("r"));
        }
        if (arguments.hasValueFor("-")) {
            String encodedExpression = arguments.getString("-");
            builder.withExpression(Optional.of(new String(base64.decode(encodedExpression.getBytes()))));
        }
        return builder.build();
    }
}