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+/* sparkline.h -- ASCII Sparklines header file
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * Copyright(C) 2011-2014 Salvatore Sanfilippo <antirez@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SPARKLINE_H
+#define __SPARKLINE_H
+
+/* A sequence is represented of many "samples" */
+struct sample {
+ double value;
+ char *label;
+};
+
+struct sequence {
+ int length;
+ int labels;
+ struct sample *samples;
+ double min, max;
+};
+
+#define SPARKLINE_NO_FLAGS 0
+#define SPARKLINE_FILL 1 /* Fill the area under the curve. */
+#define SPARKLINE_LOG_SCALE 2 /* Use logarithmic scale. */
+
+struct sequence *createSparklineSequence(void);
+void sparklineSequenceAddSample(struct sequence *seq, double value, char *label);
+void freeSparklineSequence(struct sequence *seq);
+sds sparklineRenderRange(sds output, struct sequence *seq, int rows, int offset, int len, int flags);
+sds sparklineRender(sds output, struct sequence *seq, int columns, int rows, int flags);
+
+#endif /* __SPARKLINE_H */