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Lightning-fast, dependency-free CSV library that conforms to RFC standards.

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package de.siegmar.fastcsv.writer;

/// Provides some common [QuoteStrategy] implementations.
public final class QuoteStrategies {

    /// Enclose any field with quotes regardless of its content (even empty and `null` fields).
    public static final QuoteStrategy ALWAYS = new QuoteStrategy() {
        @Override
        public boolean quoteNull(final int lineNo, final int fieldIdx) {
            return true;
        }

        @Override
        public boolean quoteEmpty(final int lineNo, final int fieldIdx) {
            return true;
        }

        @Override
        public boolean quoteNonEmpty(final int lineNo, final int fieldIdx, final String value) {
            return true;
        }
    };

    /// Enclose any field with quotes if it has content (is not empty or `null`).
    public static final QuoteStrategy NON_EMPTY = new QuoteStrategy() {
        @Override
        public boolean quoteNonEmpty(final int lineNo, final int fieldIdx, final String value) {
            return true;
        }
    };

    /// Enclose empty but not `null` fields to differentiate them.
    /// This is required for PostgreSQL CSV imports, for example.
    public static final QuoteStrategy EMPTY = new QuoteStrategy() {
        @Override
        public boolean quoteEmpty(final int lineNo, final int fieldIdx) {
            return true;
        }
    };

    private QuoteStrategies() {
        // utility class
    }

}