visfile.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include "src/common/readstream.h"
#include "src/common/streamtokenizer.h"
#include "src/common/util.h"
#include "src/common/error.h"
#include "src/common/strutil.h"

#include "src/aurora/visfile.h"

namespace Aurora {

VISFile::VISFile() {
}

VISFile::~VISFile() {
}

void VISFile::clear() {
    _map.clear();
}

void VISFile::load(Common::SeekableReadStream &vis) {
    clear();

    Common::StreamTokenizer tokenizer(Common::StreamTokenizer::kRuleIgnoreAll);
    tokenizer.addSeparator(' ');
    tokenizer.addChunkEnd('\n');
    tokenizer.addIgnore('\r');

    for (;;) {
        std::vector<Common::UString> strings;
        tokenizer.getTokens(vis, strings);

        // Make sure we don't get any empty lines
        while (!vis.eos() && strings.empty()) {
            tokenizer.nextChunk(vis);
            tokenizer.getTokens(vis, strings);
        }

        if (vis.eos())
            break;

        if ((strings.size() == 1) && (strings[0] == "[Adjacent]"))
            // TODO: New in Jade Empire
            break;

        if (strings.size() > 2)
            throw Common::Exception("Malformed VIS file");

        Common::UString room = strings[0].toLower();
        std::vector<Common::UString> visibilityArray;

        int roomCount = 0;
        if (strings.size() > 1)
            Common::parseString(strings[1], roomCount);

        int realRoomCount = 0;

        visibilityArray.reserve(roomCount);
        while (!vis.eos()) {
            size_t lineStart = vis.pos();

            tokenizer.nextChunk(vis);

            if (vis.readChar() != ' ') {
                // Not indented => new room

                vis.seek(lineStart);
                break;
            }

            tokenizer.getTokens(vis, strings);

            if (strings.size() != 1) {
                // More than one token => new room

                vis.seek(lineStart);
                break;
            }

            visibilityArray.push_back(strings[0]);
            realRoomCount++;
        }

        if (roomCount != realRoomCount)
            // Thanks, BioWare! -.-
            warning("Malformed VIS file. Wanted %d rooms, got %d?!?", roomCount, realRoomCount);

        if (!visibilityArray.empty())
            _map[room] = visibilityArray;
    }
}

static const std::vector<Common::UString> emptyRoom;
const std::vector<Common::UString> &VISFile::getVisibilityArray(const Common::UString &room) const {
    std::map<Common::UString, std::vector<Common::UString> >::const_iterator vRoom = _map.find(room.toLower());
    if (vRoom == _map.end())
        return emptyRoom;

    return vRoom->second;
}

} // End of namespace Aurora