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current state of data files will be embedded into JAR file as a set predefined files new data will be written into a newly created folder "data" near JAR file
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106 changes: 106 additions & 0 deletions
106
src/net/schwarzbaer/java/games/snowrunner/DataFiles.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| package net.schwarzbaer.java.games.snowrunner; | ||
|
|
||
| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.InputStream; | ||
| import java.util.Objects; | ||
|
|
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| public class DataFiles | ||
| { | ||
| private static final File dataFolder = new File("data"); | ||
|
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| public enum DataFile | ||
| { | ||
| DLCAssignmentsFile ("DLCAssignments.dat" ), | ||
| UserDefinedValuesFile ("UserDefinedValues.dat" ), | ||
| FilterRowsPresetsFile ("FilterRowsPresets.dat" ), | ||
| ColumnHidePresetsFile ("ColumnHidePresets.dat" ), | ||
| RowColoringsFile ("RowColorings.dat" ), | ||
| SpecialTruckAddonsFile ("SpecialTruckAddons.dat" ), | ||
| WheelsQualityRangesFile("WheelsQualityRanges.dat"), | ||
| ; | ||
| private final String name; | ||
| private DataFile( String name ) { this.name = name; } | ||
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| private File getFile() { return new File(dataFolder, name); } | ||
| private String getResourcePath() { return String.format("/%s", name); } | ||
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| public File getFileForWriting () { return DataFiles.getFileForWriting (this); } | ||
| public DataSource getDataSourceForReading() { return DataFiles.getDataSourceForReading(this); } | ||
| } | ||
|
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| public static void checkDataFolder() | ||
| { | ||
| if (!dataFolder.isDirectory() && dataFolder.exists()) | ||
| { | ||
| System.err.printf("WARNING:%n"); | ||
| System.err.printf(" Will not be able to create data folder at \"%s\".%n", dataFolder.getAbsolutePath()); | ||
| System.err.printf(" A file or something else exists at this position.%n"); | ||
| System.err.printf(" Writing of any data files will cause an exception, that will stop the application.%n"); | ||
| } | ||
| } | ||
|
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| public static File getFileForWriting(DataFile dataFile) | ||
| { | ||
| if (dataFile==null) | ||
| throw new IllegalArgumentException(); | ||
|
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| if (!dataFolder.isDirectory()) | ||
| { | ||
| if (dataFolder.exists()) | ||
| throw new RuntimeException(String.format("Can't write \"%s\". Could not create data folder at \"%s\". A file or something else exists at this position.", dataFile, dataFolder.getAbsolutePath())); | ||
|
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| boolean success = dataFolder.mkdir(); | ||
| if (!success) | ||
| throw new RuntimeException(String.format("Can't write \"%s\". Could not create data folder at \"%s\".", dataFile, dataFolder.getAbsolutePath())); | ||
| } | ||
|
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| return dataFile.getFile(); | ||
| } | ||
|
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| public static DataSource getDataSourceForReading(DataFile dataFile) | ||
| { | ||
| if (dataFile==null) | ||
| throw new IllegalArgumentException(); | ||
|
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| System.out.printf("getDataSourceForReading: %s%n", dataFile.getFile().getAbsolutePath()); | ||
| if (dataFile.getFile().isFile()) | ||
| return new DataSource(dataFile.getFile()); | ||
|
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| return new DataSource(dataFile.getResourcePath()); | ||
| } | ||
|
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|
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| public static class DataSource | ||
| { | ||
| private final File file; | ||
| private final String resourcePath; | ||
|
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| private DataSource(File file) | ||
| { | ||
| this.file = Objects.requireNonNull(file); | ||
| this.resourcePath = null; | ||
| } | ||
|
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| private DataSource(String resourcePath) | ||
| { | ||
| this.resourcePath = Objects.requireNonNull(resourcePath); | ||
| this.file = null; | ||
| } | ||
|
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| public InputStream createInputStream() throws FileNotFoundException | ||
| { | ||
| if (file !=null) return new FileInputStream(file); | ||
| if (resourcePath!=null) return getClass().getResourceAsStream(resourcePath); | ||
| throw new IllegalStateException(); | ||
| } | ||
|
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| @Override public String toString() | ||
| { | ||
| if (file !=null) return String.format("file \"%s\"", file.getAbsolutePath()); | ||
| if (resourcePath!=null) return String.format("resource \"%s\"", resourcePath); | ||
| throw new IllegalStateException(); | ||
| } | ||
| } | ||
| } |
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