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_MIN 0x04 /* use alternative algorithm to find lower bounds */
14 #define ALTAUTOSCALE_MAX 0x08 /* use alternative algorithm to find upper bounds */
15 #define NOLEGEND 0x10 /* use no legend */
16 #define NOMINOR 0x20 /* Turn off minor gridlines */
17 #define ONLY_GRAPH 0x40 /* use only graph */
18 #define FORCE_RULES_LEGEND 0x80 /* force printing of HRULE and VRULE legend */
20 #define FORCE_UNITS 0x100 /* mask for all FORCE_UNITS_* flags */
21 #define FORCE_UNITS_SI 0x100 /* force use of SI units in Y axis (no effect in linear graph, SI instead of E in log graph) */
23 enum tmt_en {TMT_SECOND=0,TMT_MINUTE,TMT_HOUR,TMT_DAY,
24 TMT_WEEK,TMT_MONTH,TMT_YEAR};
26 enum grc_en {GRC_CANVAS=0,GRC_BACK,GRC_SHADEA,GRC_SHADEB,
27 GRC_GRID,GRC_MGRID,GRC_FONT,GRC_ARROW,GRC_AXIS,GRC_FRAME,__GRC_END__};
29 #define MGRIDWIDTH 0.6
32 enum gf_en {GF_PRINT=0,GF_GPRINT,GF_COMMENT,GF_HRULE,GF_VRULE,GF_LINE,
33 GF_AREA,GF_STACK,GF_TICK,
34 GF_DEF, GF_CDEF, GF_VDEF, GF_SHIFT,
41 VDEF_MAXIMUM=0 /* like the MAX in (G)PRINT */
42 ,VDEF_MINIMUM /* like the MIN in (G)PRINT */
43 ,VDEF_AVERAGE /* like the AVERAGE in (G)PRINT */
44 ,VDEF_PERCENT /* Nth percentile */
45 ,VDEF_TOTAL /* average multiplied by time */
46 ,VDEF_FIRST /* first non-unknown value and time */
47 ,VDEF_LAST /* last non-unknown value and time */
48 ,VDEF_LSLSLOPE /* least squares line slope */
49 ,VDEF_LSLINT /* least squares line y_intercept */
50 ,VDEF_LSLCORREL /* least squares line correlation coefficient */
52 enum text_prop_en { TEXT_PROP_DEFAULT=0, /* default settings */
53 TEXT_PROP_TITLE, /* properties for the title */
54 TEXT_PROP_AXIS, /* for the numbers next to the axis */
55 TEXT_PROP_UNIT, /* for the vertical unit description */
56 TEXT_PROP_LEGEND, /* fot the legend below the graph */
59 typedef struct text_prop_t {
65 typedef struct vdef_t {
67 double param; /* parameter for function, if applicable */
68 double val; /* resulting value */
69 time_t when; /* timestamp, if applicable */
72 typedef struct xlab_t {
73 long minsec; /* minimum sec per pix */
74 long length; /* number of secs on the image */
75 enum tmt_en gridtm; /* grid interval in what ?*/
76 long gridst; /* how many whats per grid*/
77 enum tmt_en mgridtm; /* label interval in what ?*/
78 long mgridst; /* how many whats per label*/
79 enum tmt_en labtm; /* label interval in what ?*/
80 long labst; /* how many whats per label*/
81 long precis; /* label precision -> label placement*/
82 char *stst; /* strftime string*/
85 typedef struct ygrid_scale_t { /* y axis grid scaling info */
91 /* sensible y label intervals ...*/
93 typedef struct ylab_t {
94 double grid; /* grid spacing */
95 int lfac[4]; /* associated label spacing*/
99 /* this structure describes the elements which can make up a graph.
100 because they are quite diverse, not all elements will use all the
101 possible parts of the structure. */
103 #define FMT_LEG_LEN 200
105 #define FMT_LEG_LEN 2000
108 typedef struct graph_desc_t {
109 enum gf_en gf; /* graphing function */
110 int stack; /* boolean */
111 int debug; /* boolean */
112 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
113 long vidx; /* gdes reference */
114 char rrd[1024]; /* name of the rrd_file containing data */
115 char ds_nam[DS_NAM_SIZE]; /* data source name */
116 long ds; /* data source number */
117 enum cf_en cf; /* consolidation function */
118 enum cf_en cf_reduce; /* consolidation function for reduce_data() */
119 gfx_color_t col; /* graph color */
120 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
121 char legend[FMT_LEG_LEN+5]; /* legend*/
122 int strftm; /* should the VDEF legend be formated with strftime */
123 double leg_x,leg_y; /* location of legend */
124 double yrule; /* value for y rule line and for VDEF */
125 time_t xrule; /* time for x rule line and for VDEF */
126 vdef_t vf; /* instruction for VDEF function */
127 rpnp_t *rpnp; /* instructions for CDEF function */
129 /* SHIFT implementation */
130 int shidx; /* gdes reference for offset (-1 --> constant) */
131 time_t shval; /* offset if shidx is -1 */
132 time_t shift; /* current shift applied */
134 /* description of data fetched for the graph element */
135 time_t start,end; /* timestaps for first and last data element */
136 time_t start_orig,end_orig; /* timestaps for first and last data element */
137 unsigned long step; /* time between samples */
138 unsigned long step_orig; /* time between samples */
139 unsigned long ds_cnt; /* how many data sources are there in the fetch */
140 long data_first; /* first pointer to this data */
141 char **ds_namv; /* name of datasources in the fetch. */
142 rrd_value_t *data; /* the raw data drawn from the rrd */
143 rrd_value_t *p_data; /* processed data, xsize elments */
144 double linewidth; /* linewideth */
147 typedef struct image_desc_t {
149 /* configuration of graph */
151 char graphfile[MAXPATH]; /* filename for graphic */
152 FILE *graphhandle; /* FILE to use if filename is "-" */
153 long xsize,ysize; /* graph area size in pixels */
155 long piesize; /* size of the piechart */
157 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
158 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
159 char ylegend[210]; /* legend along the yaxis */
160 char title[210]; /* title for graph */
161 char watermark[110]; /* watermark for graph */
162 int draw_x_grid; /* no x-grid at all */
163 int draw_y_grid; /* no x-grid at all */
164 double grid_dash_on, grid_dash_off;
165 xlab_t xlab_user; /* user defined labeling for xaxis */
166 char xlab_form[210]; /* format for the label on the xaxis */
168 double ygridstep; /* user defined step for y grid */
169 int ylabfact; /* every how many y grid shall a label be written ? */
170 double tabwidth; /* tabwdith */
171 time_t start,end; /* what time does the graph cover */
172 unsigned long step; /* any preference for the default step ? */
173 rrd_value_t minval,maxval; /* extreme values in the data */
174 int rigid; /* do not expand range even with
176 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
177 int gridfit; /* adjust y-axis range etc so all
178 grindlines falls in integer pixel values */
179 char* imginfo; /* construct an <IMG ... tag and return
181 int lazy; /* only update the image if there is
182 reasonable probablility that the
183 existing one is out of date */
184 int slopemode; /* connect the dots of the curve directly, not using a stair */
185 int logarithmic; /* scale the yaxis logarithmic */
187 /* status information */
189 long xorigin,yorigin;/* where is (0,0) of the graph */
191 long pie_x,pie_y; /* where is the centerpoint */
193 long ximg,yimg; /* total size of the image */
194 double magfact; /* numerical magnitude*/
195 long base; /* 1000 or 1024 depending on what we graph */
196 char symbol; /* magnitude symbol for y-axis */
197 float viewfactor; /* how should the numbers on the y-axis be scaled for viewing ? */
198 int unitsexponent; /* 10*exponent for units on y-asis */
199 int unitslength; /* width of the yaxis labels */
200 int forceleftspace; /* do not kill the space to the left of the y-axis if there is no grid */
202 int extra_flags; /* flags for boolean options */
205 long prt_c; /* number of print elements */
206 long gdes_c; /* number of graphics elements */
207 graph_desc_t *gdes; /* points to an array of graph elements */
208 gfx_canvas_t *canvas; /* graphics library */
212 int xtr(image_desc_t *,time_t);
213 double ytr(image_desc_t *, double);
214 enum gf_en gf_conv(char *);
215 enum gfx_if_en if_conv(char *);
216 enum tmt_en tmt_conv(char *);
217 enum grc_en grc_conv(char *);
218 enum text_prop_en text_prop_conv(char *);
219 int im_free(image_desc_t *);
220 void auto_scale( image_desc_t *, double *, char **, double *);
221 void si_unit( image_desc_t *);
222 void expand_range(image_desc_t *);
223 void apply_gridfit(image_desc_t *);
224 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
225 int data_fetch( image_desc_t *);
226 long find_var(image_desc_t *, char *);
227 long find_var_wrapper(void *arg1, char *key);
229 int data_calc( image_desc_t *);
230 int data_proc( image_desc_t *);
231 time_t find_first_time( time_t, enum tmt_en, long);
232 time_t find_next_time( time_t, enum tmt_en, long);
233 int print_calc(image_desc_t *, char ***);
234 int leg_place(image_desc_t *);
235 int calc_horizontal_grid(image_desc_t *);
236 int draw_horizontal_grid(image_desc_t *);
237 int horizontal_log_grid(image_desc_t *);
238 void vertical_grid(image_desc_t *);
239 void axis_paint(image_desc_t *);
240 void grid_paint(image_desc_t *);
241 int lazy_check(image_desc_t *);
242 int graph_paint(image_desc_t *, char ***);
244 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
246 int gdes_alloc(image_desc_t *);
247 int scan_for_col(const char *const , int, char *const);
248 int rrd_graph(int, char **, char ***, int *, int *, FILE *, double *, double *);
249 void rrd_graph_init(image_desc_t *);
250 void rrd_graph_options(int, char **, image_desc_t *);
251 void rrd_graph_script(int, char **, image_desc_t *, int);
252 int rrd_graph_color(image_desc_t *, char *, char *, int);
253 int bad_format(char *);
254 int vdef_parse(struct graph_desc_t *,const char *const);
255 int vdef_calc(image_desc_t *, int);
256 int vdef_percent_compar(const void *,const void *);
257 int graph_size_location(image_desc_t *, int