fluencelabs/redis
1
0
Fork 0
mirror of https://github.com/fluencelabs/redis synced 2025-06-23 05:51:34 +00:00
Code Issues Projects Releases Wiki Activity

ASCII sparklines generation API.

Browse Source
This commit is contained in:
antirez
2014-07-02 10:13:53 +02:00
parent ed4980243a
commit cc4df5a6b8
4 changed files with 230 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
src/sparkline.h Normal file
View File

@ -0,0 +1,56 @@
/* 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(struct sequence *seq, int columns, int rows, int flags);
#endif /* __SPARKLINE_H */