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 enum tmt_en gridtm; /* grid interval in what ?*/
72 long gridst; /* how many whats per grid*/
73 enum tmt_en mgridtm; /* label interval in what ?*/
74 long mgridst; /* how many whats per label*/
75 enum tmt_en labtm; /* label interval in what ?*/
76 long labst; /* how many whats per label*/
77 long precis; /* label precision -> label placement*/
78 char *stst; /* strftime string*/
81 typedef struct ygrid_scale_t { /* y axis grid scaling info */
87 /* sensible y label intervals ...*/
89 typedef struct ylab_t {
90 double grid; /* grid spacing */
91 int lfac[4]; /* associated label spacing*/
95 /* this structure describes the elements which can make up a graph.
96 because they are quite diverse, not all elements will use all the
97 possible parts of the structure. */
99 #define FMT_LEG_LEN 200
101 #define FMT_LEG_LEN 2000
104 typedef struct graph_desc_t {
105 enum gf_en gf; /* graphing function */
106 int stack; /* boolean */
107 int debug; /* boolean */
108 char vname[MAX_VNAME_LEN+1]; /* name of the variable */
109 long vidx; /* gdes reference */
110 char rrd[1024]; /* name of the rrd_file containing data */
111 char ds_nam[DS_NAM_SIZE]; /* data source name */
112 long ds; /* data source number */
113 enum cf_en cf; /* consolidation function */
114 enum cf_en cf_reduce; /* consolidation function for reduce_data() */
115 gfx_color_t col; /* graph color */
116 char format[FMT_LEG_LEN+5]; /* format for PRINT AND GPRINT */
117 char legend[FMT_LEG_LEN+5]; /* legend*/
118 double leg_x,leg_y; /* location of legend */
119 double yrule; /* value for y rule line and for VDEF */
120 time_t xrule; /* time for x rule line and for VDEF */
121 vdef_t vf; /* instruction for VDEF function */
122 rpnp_t *rpnp; /* instructions for CDEF function */
124 /* SHIFT implementation */
125 int shidx; /* gdes reference for offset (-1 --> constant) */
126 time_t shval; /* offset if shidx is -1 */
127 time_t shift; /* current shift applied */
129 /* description of data fetched for the graph element */
130 time_t start,end; /* timestaps for first and last data element */
131 unsigned long step; /* time between samples */
132 unsigned long ds_cnt; /* how many data sources are there in the fetch */
133 long data_first; /* first pointer to this data */
134 char **ds_namv; /* name of datasources in the fetch. */
135 rrd_value_t *data; /* the raw data drawn from the rrd */
136 rrd_value_t *p_data; /* processed data, xsize elments */
137 double linewidth; /* linewideth */
140 typedef struct image_desc_t {
142 /* configuration of graph */
144 char graphfile[MAXPATH]; /* filename for graphic */
145 FILE *graphhandle; /* FILE to use if filename is "-" */
146 long xsize,ysize; /* graph area size in pixels */
148 long piesize; /* size of the piechart */
150 gfx_color_t graph_col[__GRC_END__]; /* real colors for the graph */
151 text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
152 char ylegend[200]; /* legend along the yaxis */
153 char title[200]; /* title for graph */
154 int draw_x_grid; /* no x-grid at all */
155 int draw_y_grid; /* no x-grid at all */
156 double grid_dash_on, grid_dash_off;
157 xlab_t xlab_user; /* user defined labeling for xaxis */
158 char xlab_form[200]; /* format for the label on the xaxis */
160 double ygridstep; /* user defined step for y grid */
161 int ylabfact; /* every how many y grid shall a label be written ? */
162 double tabwidth; /* tabwdith */
163 time_t start,end; /* what time does the graph cover */
164 unsigned long step; /* any preference for the default step ? */
165 rrd_value_t minval,maxval; /* extreme values in the data */
166 int rigid; /* do not expand range even with
168 ygrid_scale_t ygrid_scale; /* calculated y axis grid info */
169 int gridfit; /* adjust y-axis range etc so all
170 grindlines falls in integer pixel values */
171 char* imginfo; /* construct an <IMG ... tag and return
173 int lazy; /* only update the image if there is
174 reasonable probablility that the
175 existing one is out of date */
176 int slopemode; /* connect the dots of the curve directly, not using a stair */
177 int logarithmic; /* scale the yaxis logarithmic */
179 /* status information */
181 long xorigin,yorigin;/* where is (0,0) of the graph */
183 long pie_x,pie_y; /* where is the centerpoint */
185 long ximg,yimg; /* total size of the image */
186 double magfact; /* numerical magnitude*/
187 long base; /* 1000 or 1024 depending on what we graph */
188 char symbol; /* magnitude symbol for y-axis */
189 float viewfactor; /* how should the numbers on the y-axis be scaled for viewing ? */
190 int unitsexponent; /* 10*exponent for units on y-asis */
191 int unitslength; /* width of the yaxis labels */
192 int extra_flags; /* flags for boolean options */
195 long prt_c; /* number of print elements */
196 long gdes_c; /* number of graphics elements */
197 graph_desc_t *gdes; /* points to an array of graph elements */
198 gfx_canvas_t *canvas; /* graphics library */
202 int xtr(image_desc_t *,time_t);
203 double ytr(image_desc_t *, double);
204 enum gf_en gf_conv(char *);
205 enum gfx_if_en if_conv(char *);
206 enum tmt_en tmt_conv(char *);
207 enum grc_en grc_conv(char *);
208 enum text_prop_en text_prop_conv(char *);
209 int im_free(image_desc_t *);
210 void auto_scale( image_desc_t *, double *, char **, double *);
211 void si_unit( image_desc_t *);
212 void expand_range(image_desc_t *);
213 void apply_gridfit(image_desc_t *);
214 void reduce_data( enum cf_en, unsigned long, time_t *, time_t *, unsigned long *, unsigned long *, rrd_value_t **);
215 int data_fetch( image_desc_t *);
216 long find_var(image_desc_t *, char *);
217 long find_var_wrapper(void *arg1, char *key);
219 int data_calc( image_desc_t *);
220 int data_proc( image_desc_t *);
221 time_t find_first_time( time_t, enum tmt_en, long);
222 time_t find_next_time( time_t, enum tmt_en, long);
223 int print_calc(image_desc_t *, char ***);
224 int leg_place(image_desc_t *);
225 int calc_horizontal_grid(image_desc_t *);
226 int draw_horizontal_grid(image_desc_t *);
227 int horizontal_log_grid(image_desc_t *);
228 void vertical_grid(image_desc_t *);
229 void axis_paint(image_desc_t *);
230 void grid_paint(image_desc_t *);
231 int lazy_check(image_desc_t *);
232 int graph_paint(image_desc_t *, char ***);
234 void pie_part(image_desc_t *, gfx_color_t, double, double, double, double, double);
236 int gdes_alloc(image_desc_t *);
237 int scan_for_col(char *, int, char *);
238 int rrd_graph(int, char **, char ***, int *, int *, FILE *, double *, double *);
239 void rrd_graph_init(image_desc_t *);
240 void rrd_graph_options(int, char **, image_desc_t *);
241 void rrd_graph_script(int, char **, image_desc_t *, int);
242 int rrd_graph_check_vname(image_desc_t *, char *, char *);
243 int rrd_graph_color(image_desc_t *, char *, char *, int);
244 int bad_format(char *);
245 int vdef_parse(struct graph_desc_t *,char *);
246 int vdef_calc(image_desc_t *, int);
247 int vdef_percent_compar(const void *,const void *);
248 int graph_size_location(image_desc_t *, int