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    • com.gorylenko.PropertiesFileWriter.groovy Maven / Gradle / Ivy

    package com.gorylenko

import com.gorylenko.writer.NormalizeEOLOutputStream
import com.gorylenko.writer.SkipPropertiesCommentsOutputStream

class PropertiesFileWriter {

    boolean write(Map properties, File file, boolean force) {
        if (!force && hasSameContent(file, properties)) {
            // Skipping writing [${file}] as it is up-to-date.
            return false
        } else {
            // Writing to [${file}]...
            writeToPropertiesFile(properties, file)
            return true
        }
    }

    private static class SortedProperties extends Properties {
        private static final long serialVersionUID = 1L

        @Override
        synchronized Enumeration keys() {
            Vector v = new Vector(keySet())
            Collections.sort(v)
            return new Vector(v).elements()
        }

        @Override
        Set> entrySet() {
            keys().collect { new AbstractMap.SimpleImmutableEntry(it, get(it)) } as LinkedHashSet
        }
    }

    private void writeToPropertiesFile(Map properties, File propsFile) {

        def props = new SortedProperties()
        props.putAll(properties)

        if (!propsFile.parentFile.exists()) {
            propsFile.parentFile.mkdirs()
        }
        if (propsFile.exists()) {
            propsFile.delete()
        }
        propsFile.createNewFile()

        new NormalizeEOLOutputStream(new SkipPropertiesCommentsOutputStream(new FileOutputStream(propsFile))).withStream { os ->
            props.store(os, null)
        }
    }

    private boolean hasSameContent(File propsFile, Map properties) {
        boolean sameContent = false
        if (propsFile.exists()) {
            def props = new Properties()
            propsFile.withInputStream {
                props.load it
            }
            if (props.equals(properties)) {
                sameContent = true
            }
        }
        return sameContent
    }
}
    
    
    
    

    




    
    
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