5 #include "rrd_rpncalc.h"
8 #define MAX_VNAME_LEN 255
9 #define DEF_NAM_FMT "%255[-_A-Za-z0-9]"
11 #define ALTYGRID 0x01 /* use alternative y grid algorithm */
12 #define ALTAUTOSCALE 0x02 /* use alternative algorithm to find lower and upper bounds */
13 #define ALTAUTOSCALE_MAX 0x04 /* use alternative algorithm to find upper bounds */
14 #define NOLEGEND 0x08 /* use no legend */
15 #define NOMINOR 0x10 /* Turn off minor gridlines */
16 #define ONLY_GRAPH 0x20 /* use only graph */
17 #define FORCE_RULES_LEGEND 0x40 /* force printing of HRULE and VRULE legend */
20 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
21 TMT_WEEK,TMT_MONTH,TMT_YEAR};
23 enum grc_en {GRC_CANVAS=0,GRC_BACK,GRC_SHADEA,GRC_SHADEB,
24 GRC_GRID,GRC_MGRID,GRC_FONT,GRC_ARROW,GRC_AXIS,GRC_FRAME,__GRC_END__};
26 #define MGRIDWIDTH 0.6
29 enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
30 GF_AREA,GF_STACK,GF_TICK,
31 GF_DEF, GF_CDEF, GF_VDEF, GF_SHIFT,
38 VDEF_MAXIMUM=0 /* like the MAX in (G)PRINT */
39 ,VDEF_MINIMUM /* like the MIN in (G)PRINT */
40 ,VDEF_AVERAGE /* like the AVERAGE in (G)PRINT */
41 ,VDEF_PERCENT /* Nth percentile */
42 ,VDEF_TOTAL /* average multiplied by time */
43 ,VDEF_FIRST /* first non-unknown value and time */
44 ,VDEF_LAST /* last non-unknown value and time */
45 ,VDEF_LSLSLOPE /* least squares line slope */
46 ,VDEF_LSLINT /* least squares line y_intercept */
47 ,VDEF_LSLCORREL /* least squares line correlation coefficient */
49 enum text_prop_en { TEXT_PROP_DEFAULT=0, /* default settings */
50 TEXT_PROP_TITLE, /* properties for the title */
51 TEXT_PROP_AXIS, /* for the numbers next to the axis */
52 TEXT_PROP_UNIT, /* for the vertical unit description */
53 TEXT_PROP_LEGEND, /* fot the legend below the graph */
56 typedef struct text_prop_t {
62 typedef struct vdef_t {
64 double param; /* parameter for function, if applicable */
65 double val; /* resulting value */
66 time_t when; /* timestamp, if applicable */
69 typedef struct xlab_t {
70 long minsec; /* minimum sec per pix */
71 long length; /* number of secs on the image */
72 enum tmt_en gridtm; /* grid interval in what ?*/
73 long gridst; /* how many whats per grid*/
74 enum tmt_en mgridtm; /* label interval in what ?*/
75 long mgridst; /* how many whats per label*/
76 enum tmt_en labtm; /* label interval in what ?*/
77 long labst; /* how many whats per label*/
78 long precis; /* label precision -> label placement*/
79 char *stst; /* strftime string*/
82 typedef struct ygrid_scale_t { /* y axis grid scaling info */
88 /* sensible y label intervals ...*/
90 typedef struct ylab_t {
91 double grid; /* grid spacing */
92 int lfac[4]; /* associated label spacing*/
96 /* this structure describes the elements which can make up a graph.
97 because they are quite diverse, not all elements will use all the
98 possible parts of the structure. */
100 #define FMT_LEG_LEN 200
102 #define FMT_LEG_LEN 2000
105 typedef struct graph_desc_t {
106 enum gf_en gf; /* graphing function */
107 int stack; /* boolean */
108 int debug; /* boolean */
109 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
110 long vidx; /* gdes reference */
111 char rrd[1024]; /* name of the rrd_file containing data */
112 char ds_nam[DS_NAM_SIZE]; /* data source name */
113 long ds; /* data source number */
114 enum cf_en cf; /* consolidation function */
115 enum cf_en cf_reduce; /* consolidation function for reduce_data() */
116 gfx_color_t col; /* graph color */
117 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
118 char legend[FMT_LEG_LEN+5]; /* legend*/
119 double leg_x,leg_y; /* location of legend */
120 double yrule; /* value for y rule line and for VDEF */
121 time_t xrule; /* time for x rule line and for VDEF */
122 vdef_t vf; /* instruction for VDEF function */
123 rpnp_t *rpnp; /* instructions for CDEF function */
125 /* SHIFT implementation */
126 int shidx; /* gdes reference for offset (-1 --> constant) */
127 time_t shval; /* offset if shidx is -1 */
128 time_t shift; /* current shift applied */
130 /* description of data fetched for the graph element */
131 time_t start,end; /* timestaps for first and last data element */
132 time_t start_orig,end_orig; /* timestaps for first and last data element */
133 unsigned long step; /* time between samples */
134 unsigned long step_orig; /* time between samples */
135 unsigned long ds_cnt; /* how many data sources are there in the fetch */
136 long data_first; /* first pointer to this data */
137 char **ds_namv; /* name of datasources in the fetch. */
138 rrd_value_t *data; /* the raw data drawn from the rrd */
139 rrd_value_t *p_data; /* processed data, xsize elments */
140 double linewidth; /* linewideth */
143 typedef struct image_desc_t {
145 /* configuration of graph */
147 char graphfile[MAXPATH]; /* filename for graphic */
148 FILE *graphhandle; /* FILE to use if filename is "-" */
149 long xsize,ysize; /* graph area size in pixels */
151 long piesize; /* size of the piechart */
153 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
154 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
155 char ylegend[200]; /* legend along the yaxis */
156 char title[200]; /* title for graph */
157 char watermark[100]; /* watermark for graph */
158 int draw_x_grid; /* no x-grid at all */
159 int draw_y_grid; /* no x-grid at all */
160 double grid_dash_on, grid_dash_off;
161 xlab_t xlab_user; /* user defined labeling for xaxis */
162 char xlab_form[200]; /* format for the label on the xaxis */
164 double ygridstep; /* user defined step for y grid */
165 int ylabfact; /* every how many y grid shall a label be written ? */
166 double tabwidth; /* tabwdith */
167 time_t start,end; /* what time does the graph cover */
168 unsigned long step; /* any preference for the default step ? */
169 rrd_value_t minval,maxval; /* extreme values in the data */
170 int rigid; /* do not expand range even with
172 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
173 int gridfit; /* adjust y-axis range etc so all
174 grindlines falls in integer pixel values */
175 char* imginfo; /* construct an <IMG ... tag and return
177 int lazy; /* only update the image if there is
178 reasonable probablility that the
179 existing one is out of date */
180 int slopemode; /* connect the dots of the curve directly, not using a stair */
181 int logarithmic; /* scale the yaxis logarithmic */
183 /* status information */
185 long xorigin,yorigin;/* where is (0,0) of the graph */
187 long pie_x,pie_y; /* where is the centerpoint */
189 long ximg,yimg; /* total size of the image */
190 double magfact; /* numerical magnitude*/
191 long base; /* 1000 or 1024 depending on what we graph */
192 char symbol; /* magnitude symbol for y-axis */
193 float viewfactor; /* how should the numbers on the y-axis be scaled for viewing ? */
194 int unitsexponent; /* 10*exponent for units on y-asis */
195 int unitslength; /* width of the yaxis labels */
196 int extra_flags; /* flags for boolean options */
199 long prt_c; /* number of print elements */
200 long gdes_c; /* number of graphics elements */
201 graph_desc_t *gdes; /* points to an array of graph elements */
202 gfx_canvas_t *canvas; /* graphics library */
206 int xtr(image_desc_t *,time_t);
207 double ytr(image_desc_t *, double);
208 enum gf_en gf_conv(char *);
209 enum gfx_if_en if_conv(char *);
210 enum tmt_en tmt_conv(char *);
211 enum grc_en grc_conv(char *);
212 enum text_prop_en text_prop_conv(char *);
213 int im_free(image_desc_t *);
214 void auto_scale( image_desc_t *, double *, char **, double *);
215 void si_unit( image_desc_t *);
216 void expand_range(image_desc_t *);
217 void apply_gridfit(image_desc_t *);
218 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
219 int data_fetch( image_desc_t *);
220 long find_var(image_desc_t *, char *);
221 long find_var_wrapper(void *arg1, char *key);
223 int data_calc( image_desc_t *);
224 int data_proc( image_desc_t *);
225 time_t find_first_time( time_t, enum tmt_en, long);
226 time_t find_next_time( time_t, enum tmt_en, long);
227 int print_calc(image_desc_t *, char ***);
228 int leg_place(image_desc_t *);
229 int calc_horizontal_grid(image_desc_t *);
230 int draw_horizontal_grid(image_desc_t *);
231 int horizontal_log_grid(image_desc_t *);
232 void vertical_grid(image_desc_t *);
233 void axis_paint(image_desc_t *);
234 void grid_paint(image_desc_t *);
235 int lazy_check(image_desc_t *);
236 int graph_paint(image_desc_t *, char ***);
238 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
240 int gdes_alloc(image_desc_t *);
241 int scan_for_col(const char *const , int, char *const);
242 int rrd_graph(int, char **, char ***, int *, int *, FILE *, double *, double *);
243 void rrd_graph_init(image_desc_t *);
244 void rrd_graph_options(int, char **, image_desc_t *);
245 void rrd_graph_script(int, char **, image_desc_t *, int);
246 int rrd_graph_check_vname(image_desc_t *, char *, char *);
247 int rrd_graph_color(image_desc_t *, char *, char *, int);
248 int bad_format(char *);
249 int vdef_parse(struct graph_desc_t *,const char *const);
250 int vdef_calc(image_desc_t *, int);
251 int vdef_percent_compar(const void *,const void *);
252 int graph_size_location(image_desc_t *, int