diff options
Diffstat (limited to 'Essentials/src/com/earth2me/essentials/storage/YamlStorageWriter.java')
| -rw-r--r-- | Essentials/src/com/earth2me/essentials/storage/YamlStorageWriter.java | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/Essentials/src/com/earth2me/essentials/storage/YamlStorageWriter.java b/Essentials/src/com/earth2me/essentials/storage/YamlStorageWriter.java new file mode 100644 index 000000000..209de1ed7 --- /dev/null +++ b/Essentials/src/com/earth2me/essentials/storage/YamlStorageWriter.java @@ -0,0 +1,295 @@ +package com.earth2me.essentials.storage; + +import java.io.PrintWriter; +import java.lang.reflect.Field; +import java.lang.reflect.Modifier; +import java.util.Collection; +import java.util.Collections; +import java.util.Map; +import java.util.Map.Entry; +import java.util.logging.Level; +import java.util.logging.Logger; +import java.util.regex.Pattern; +import org.bukkit.Location; +import org.bukkit.Material; +import org.bukkit.inventory.ItemStack; +import org.bukkit.material.MaterialData; +import org.yaml.snakeyaml.Yaml; + + +public class YamlStorageWriter implements IStorageWriter +{ + private transient static Pattern pattern = Pattern.compile("\\w"); + private transient final PrintWriter writer; + private transient static final Yaml YAML = new Yaml(); + + public YamlStorageWriter(final PrintWriter writer) + { + this.writer = writer; + } + + public void save(final StorageObject object) + { + try + { + writeToFile(object, 0, object.getClass()); + } + catch (IllegalArgumentException ex) + { + Logger.getLogger(YamlStorageWriter.class.getName()).log(Level.SEVERE, null, ex); + } + catch (IllegalAccessException ex) + { + Logger.getLogger(YamlStorageWriter.class.getName()).log(Level.SEVERE, null, ex); + } + } + + private void writeToFile(final Object object, final int depth, final Class clazz) throws IllegalAccessException + { + for (Field field : clazz.getDeclaredFields()) + { + final int modifier = field.getModifiers(); + if (Modifier.isPrivate(modifier) && !Modifier.isTransient(modifier) && !Modifier.isStatic(modifier)) + { + field.setAccessible(true); + + final Object data = field.get(object); + if (writeKey(field, depth, data)) + { + continue; + } + if (data instanceof StorageObject) + { + writer.println(); + writeToFile(data, depth + 1, data.getClass()); + } + else if (data instanceof Map) + { + writeMap((Map<Object, Object>)data, depth + 1); + } + else if (data instanceof Collection) + { + writeCollection((Collection<Object>)data, depth + 1); + } + else if (data instanceof Location) + { + writeLocation((Location)data, depth + 1); + } + else + { + writeScalar(data); + writer.println(); + } + } + } + } + + private boolean writeKey(final Field field, final int depth, final Object data) + { + final boolean commentPresent = writeComment(field, depth); + if (data == null && !commentPresent) + { + return true; + } + writeIndention(depth); + if (data == null && commentPresent) + { + writer.print('#'); + } + final String name = field.getName(); + writer.print(name); + writer.print(": "); + if (data == null && commentPresent) + { + writer.println(); + writer.println(); + return true; + } + return false; + } + + private boolean writeComment(final Field field, final int depth) + { + final boolean commentPresent = field.isAnnotationPresent(Comment.class); + if (commentPresent) + { + final Comment comments = field.getAnnotation(Comment.class); + for (String comment : comments.value()) + { + final String trimmed = comment.trim(); + if (trimmed.isEmpty()) + { + continue; + } + writeIndention(depth); + writer.print("# "); + writer.print(trimmed); + writer.println(); + } + } + return commentPresent; + } + + private void writeCollection(final Collection<Object> data, final int depth) throws IllegalAccessException + { + writer.println(); + if (data.isEmpty()) + { + writer.println(); + } + for (Object entry : data) + { + if (entry != null) + { + writeIndention(depth); + writer.print("- "); + if (entry instanceof StorageObject) + { + writer.println(); + writeToFile(entry, depth + 1, entry.getClass()); + } + else if (entry instanceof Location) + { + writeLocation((Location)entry, depth + 1); + } + else + { + writeScalar(entry); + } + } + } + writer.println(); + } + + private void writeMap(final Map<Object, Object> data, final int depth) throws IllegalArgumentException, IllegalAccessException + { + writer.println(); + if (data.isEmpty()) + { + writer.println(); + } + for (Entry<Object, Object> entry : data.entrySet()) + { + final Object value = entry.getValue(); + if (value != null) + { + writeIndention(depth); + writeKey(entry.getKey()); + writer.print(": "); + if (value instanceof StorageObject) + { + writer.println(); + writeToFile(value, depth + 1, value.getClass()); + } + else if (value instanceof Collection) + { + writeCollection((Collection<Object>)value, depth + 1); + } + else if (value instanceof Location) + { + writeLocation((Location)value, depth + 1); + } + else + { + writeScalar(value); + writer.println(); + } + } + } + } + + private void writeIndention(final int depth) + { + for (int i = 0; i < depth; i++) + { + writer.print(" "); + } + } + + private void writeScalar(final Object data) + { + if (data instanceof String || data instanceof Boolean || data instanceof Number) + { + synchronized (YAML) + { + YAML.dumpAll(Collections.singletonList(data).iterator(), writer); + } + } + else if (data instanceof Material) + { + writer.println(data.toString().toLowerCase()); + } + else if (data instanceof MaterialData) + { + final MaterialData matData = (MaterialData)data; + writer.println(matData.getItemType().toString().toLowerCase() + + (matData.getData() > 0 ? ":" + matData.getData() : "")); + } + else if (data instanceof ItemStack) + { + final ItemStack itemStack = (ItemStack)data; + writer.println(itemStack.getType().toString().toLowerCase() + + (itemStack.getDurability() > 0 ? ":" + itemStack.getDurability() : "") + + " " + itemStack.getAmount()); + } + else + { + throw new UnsupportedOperationException(); + } + } + + private void writeKey(final Object data) + { + if (data instanceof String || data instanceof Boolean || data instanceof Number) + { + String output = data.toString(); + if (pattern.matcher(output).find()) + { + writer.print('"'); + writer.print(output.replace("\"", "\\\"")); + writer.print('"'); + } + else + { + writer.print(output); + } + } + else if (data instanceof Material) + { + writer.print(data.toString().toLowerCase()); + } + else if (data instanceof MaterialData) + { + final MaterialData matData = (MaterialData)data; + writer.print(matData.getItemType().toString().toLowerCase() + + (matData.getData() > 0 ? ":" + matData.getData() : "")); + } + else + { + throw new UnsupportedOperationException(); + } + } + + private void writeLocation(final Location entry, final int depth) + { + writer.println(); + writeIndention(depth); + writer.print("world: "); + writeScalar(entry.getWorld().getName()); + writeIndention(depth); + writer.print("x: "); + writeScalar(entry.getX()); + writeIndention(depth); + writer.print("y: "); + writeScalar(entry.getY()); + writeIndention(depth); + writer.print("z: "); + writeScalar(entry.getZ()); + writeIndention(depth); + writer.print("yaw: "); + writeScalar(entry.getYaw()); + writeIndention(depth); + writer.print("pitch: "); + writeScalar(entry.getPitch()); + } +} |