source: java/main/src/main/java/com/framsticks/params/SimpleAbstractAccess.java @ 84

package com.framsticks.params;

import java.io.IOException;
import java.util.Collection;

import static com.framsticks.util.lang.Containers.filterInstanceof;

import org.apache.log4j.Logger;

/**
 * The Class SimpleAbstractAccess implements all the methods of AccessInterface
 * which actions can be implemented with usage of {@link AccessInterface} methods
 * or concern schema, which is stored in {@link #framsClass}
 *
 * Based on c++ class SimpleAbstractParam located in: cpp/gdk/param.*
 *
 * @author Jarek Szymczak <name.surname@gmail.com>, Mateusz Jarus (please
 *         replace name and surname with my personal data)
 *
 * @author Piotr Sniegowski
 */
public abstract class SimpleAbstractAccess implements AccessInterface {

        private final static Logger log = Logger.getLogger(SimpleAbstractAccess.class.getName());

        @Override
        public final FramsClass getFramsClass() {
                return framsClass;
        }

        public void setFramsClass(FramsClass framsClass) {
                this.framsClass = framsClass;
        }
        /**
         * Simple String key, value class.
         */
        public static class Entry {

                public final String key;
                public final String value;

                public Entry(String key, String value) {
                        this.key = key;
                        this.value = value;
                }

                @Override
                public String toString() {
                        return key + " = " + value;
                }
        }

        protected FramsClass framsClass;

        @Override
        public String getId() {
                return framsClass.getId();
        }

        @Override
        public int getParamCount() {
                return framsClass.getParamCount();
        }

        @Override
        public Param getParam(int i) {
                return framsClass.getParamEntry(i, Param.class);
        }

        @Override
        public Param getParam(String id) {
                return framsClass.getParamEntry(id, Param.class);
        }

        @Override
        public Param getGroupMember(int gi, int n) {
                return framsClass.getGroupMember(gi, n);
        }

        @Override
        public <T> T get(int i, Class<T> type) {
                Param p = getParam(i);
                assert p instanceof ValueParam;
                return get((ValueParam) p, type);
        }

        @Override
        public <T> T get(String id, Class<T> type) {
                Param p = getParam(id);
                assert p instanceof ValueParam;
                return get((ValueParam) p, type);
        }

        @Override
        public <T> int set(String id, T value) {
                Param p = getParam(id);
                assert p instanceof ValueParam;
                return set((ValueParam) p, value);
        }

        @Override
        public <T> int set(int i, T value) {
                Param p = getParam(i);
                assert p instanceof ValueParam;
                return set((ValueParam) p, value);
        }

        @Override
        public <T> int set(ValueParam param, T value) {
                int flags = 0;

                //String id = param.getEffectiveId();
                try {
                        Object oldValue = get(param, param.getStorageType());
                        ReassignResult<?> result = param.reassign(value, oldValue);
                        Object casted = result.getValue();
                        if (casted != oldValue) {
                                internalSet(param, casted);
                        }
                        flags = result.getFlags();
                } catch (CastFailure e) {
                        log.error("casting failure while set: ", e);
                }
                return flags;
        }

        @Override
        public void setDefault(boolean numericOnly) {
                for (int i = 0; i < framsClass.getParamCount(); i++) {
                        setDefault(i, numericOnly);
                }
        }

        @Override
        public void setDefault(int i, boolean numericOnly) {
                ValueParam entry = framsClass.getParamEntry(i, ValueParam.class);
                if ((entry != null)     && (!numericOnly || entry.isNumeric())) {
                        set(i, entry.getDef(entry.getStorageType()));
                }
        }

        @Override
        public void setMin() {
                for (int i = 0; i < framsClass.getParamCount(); i++) {
                        setMin(i);
                }
        }

        @Override
        public void setMin(int i) {
                PrimitiveParam entry = framsClass.getParamEntry(i, PrimitiveParam.class);
                if (entry == null) {
                        return;
                }
                Object min = entry.getMin(entry.getStorageType());
                if (min != null) {
                        set(i, min);
                }
        }

        @Override
        public void setMax() {
                for (int i = 0; i < framsClass.getParamCount(); i++) {
                        setMax(i);
                }
        }

        @Override
        public void setMax(int i) {
                PrimitiveParam entry = framsClass.getParamEntry(i, PrimitiveParam.class);
                if (entry == null) {
                        return;
                }
                Object max = entry.getMax(entry.getStorageType());
                if (max != null) {
                        set(i, max);
                }
        }

        @Override
        public void copyFrom(AccessInterface src) {
                clearValues();
                //TODO: iterate over self, and pull from src
                /*
                for (int i = 0; i < src.getFramsClass().size(); i++) {
                        this.set(i, src.get(i, Object.class));
                }
                */
        }




        @Override
        public void save(SinkInterface sink) {
                assert framsClass != null;
                sink.print(framsClass.getId()).print(":").breakLine();
                for (PrimitiveParam p : filterInstanceof(framsClass.getParamEntries(), PrimitiveParam.class)) {
                        Object value = get(p, Object.class);
                        if (value == null) {
                                continue;
                        }
                        sink.print(p.getId()).print(":");
                        p.save(sink, value);
                        sink.breakLine();
                }
                sink.breakLine();
        }

        private Entry readEntry(SourceInterface source)
                        throws IOException {

                String line;
                String key = null;
                StringBuilder value = null;
                while ((line = source.readLine()) != null)
                {
                        if (key == null) {
                                int colonIndex = line.indexOf(':');
                                if (colonIndex == -1) {
                                        return null;
                                }
                                key = line.substring(0, colonIndex);
                                String inlineValue = line.substring(colonIndex + 1);


                                if (!inlineValue.startsWith("~")) {
                                        return new Entry(key, inlineValue);
                                }
                                value = new StringBuilder();
                                value.append(inlineValue.substring(1));
                                continue;
                        }
                        if (value.length() != 0) {
                                value.append(System.getProperty("line.separator"));
                        }
                        if (line.contains("~")) {
                                value.append(line.substring(0, line.indexOf("~")));
                                return new Entry(key, value.toString());
                        }
                        value.append(line);
                        /*
                        if (line.contains("~")) {
                                String lastLine = line.substring(0, line.indexOf("~"));
                                if (lastLine.length() > 0) {
                                        appendToValue(value, lastLine);
                                }
                                return new Entry(key, value.toString());
                        }
                        appendToValue(value, line);
                        */
                }
                return null;
        }

        @Override
        public void load(SourceInterface source) throws Exception {
                //TODO not clearing values, because get from manager gives only fields, not children
                //this.clearValues();

                Entry entry;
                while ((entry = readEntry(source)) != null) {
                        Param param = getParam(entry.key);
                        if (param == null) {
                                continue;
                        }
                        if (!(param instanceof ValueParam)) {
                                log.warn("param " + param + " is not a ValueParam");
                                continue;
                        }
                        if ((param.getFlags() & Flags.DONTLOAD) != 0) {
                                log.debug("DontLoad flag was set - not loading...");
                        } else {
                                int retFlags = this.set((ValueParam) param, entry.value);
                                if ((retFlags & (Flags.PSET_HITMIN | Flags.PSET_HITMAX)) != 0) {
                                        String which = ((retFlags & Flags.PSET_HITMIN) != 0) ? "small" : "big";
                                        log.warn("value of key '" + entry.key + "' was too " + which + ", adjusted");
                                }
                        }
                }
        }

        protected abstract <T> void internalSet(ValueParam param, T value);

        @Override
        public Collection<Param> getParams() {
                return framsClass.getParamEntries();
        }

        /*
        protected <T extends Comparable<T>> int setAndCut(Param param, Object value, Class<T> type) {
                int flags = 0;
                T val = type.cast(value);
                T min = param.getMin(type);
                T max = param.getMax(type);
                if (min != null && val.compareTo(min) < 0) {
                        val = min;
                        flags |= Flags.PSET_HITMIN;
                }
                if (max != null && val.compareTo(max) > 0) {
                        val = max;
                        flags |= Flags.PSET_HITMAX;
                }
                internalSet(param, val);
                return flags;
        }*/


}