-/**********************************************************
- *** Several generic helper functions for rrd_graph.c ***
- **********************************************************/
+/****************************************************************************
+ * RRDtool 1.2.16 Copyright by Tobi Oetiker, 1997-2006
+ ****************************************************************************
+ * rrd_graph_helper.c commandline parser functions
+ * this code initially written by Alex van den Bogaerdt
+ ****************************************************************************/
#include "rrd_graph.h"
-#include "rrd_graph_helper.h"
-/**********************************************************
- *** Helper functions for parsing command file ***
- **********************************************************/
+#define dprintf if (gdp->debug) printf
-/* Parse a VNAME followed by an equal sign ( CDEF:VNAME= )
+/* NOTE ON PARSING:
*
- * Input: pointer to argv
- * Input: pointer to im structure
- * Input: pointer to error string
- * Output: number of chars eaten (0 means error)
+ * we use the following:
+ *
+ * i=0; sscanf(&line[*eaten], "what to find%n", variables, &i)
*
- * Usage: n=parse_vname( &argv[i][argstart],&im, "VDEF");
- * if (n==0) { error } else { argstart+=n };
+ * Usually you want to find a separator as well. Example:
+ * i=0; sscanf(&line[*eaten], "%li:%n", &someint, &i)
+ *
+ * When the separator is not found, i is not set and thus remains zero.
+ * Another way would be to compare strlen() to i
+ *
+ * Why is this important? Because 12345abc should not be matched as
+ * integer 12345 ...
+ */
+
+/* NOTE ON VNAMES:
+ *
+ * "if ((gdp->vidx=find_var(im, l))!=-1)" is not good enough, at least
+ * not by itself.
+ *
+ * A vname as a result of a VDEF is quite different from a vname
+ * resulting of a DEF or CDEF.
*/
+
+/* NOTE ON VNAMES:
+ *
+ * A vname called "123" is not to be parsed as the number 123
+ */
+
+
+/* Define prototypes for the parsing methods.
+ Inputs:
+ const char *const line - a fixed pointer to a fixed string
+ unsigned int *const eaten - a fixed pointer to a changing index in that line
+ graph_desc_t *const gdp - a fixed pointer to a changing graph description
+ image_desc_t *const im - a fixed pointer to a changing image description
+*/
+
+int rrd_parse_find_gf (const char * const, unsigned int *const, graph_desc_t *const);
+int rrd_parse_legend (const char * const, unsigned int *const, graph_desc_t *const);
+int rrd_parse_color (const char * const, graph_desc_t *const);
+int rrd_parse_CF (const char * const, unsigned int *const, graph_desc_t *const, enum cf_en *const);
+int rrd_parse_print (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_shift (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_xport (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_PVHLAST (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_make_vname (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_find_vname (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_def (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_vdef (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+int rrd_parse_cdef (const char * const, unsigned int *const, graph_desc_t *const, image_desc_t *const);
+
+
+
int
-parse_vname1(cptr,im,err)
-char * cptr;
-image_desc_t * im;
-char * err;
-{
- int n=0,vidx;
-
- sscanf(cptr, DEF_NAM_FMT "=%n",im->gdes[im->gdes_c-1].vname,&n);
-
- /* Check if the sequence matches, including the
- * terminating equal sign */
- if (n==0) {
- im_free(im);
- rrd_set_error("Can't parse VNAME in %s: '%s'",err,cptr);
+rrd_parse_find_gf(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
+ char funcname[11],c1=0;
+ int i=0;
+
+ /* start an argument with DEBUG to be able to see how it is parsed */
+ sscanf(&line[*eaten], "DEBUG%n", &i);
+ if (i) {
+ gdp->debug=1;
+ (*eaten)+=i;
+ i=0;
+ dprintf("Scanning line '%s'\n",&line[*eaten]);
+ }
+ i=0;c1='\0';
+ sscanf(&line[*eaten], "%10[A-Z]%n%c", funcname, &i, &c1);
+ if (!i) {
+ rrd_set_error("Could not make sense out of '%s'",line);
+ return 1;
+ }
+ (*eaten)+=i;
+ if ((int)(gdp->gf=gf_conv(funcname)) == -1) {
+ rrd_set_error("'%s' is not a valid function name", funcname);
+ return 1;
+ } else {
+ dprintf("- found function name '%s'\n",funcname);
+ }
+
+ if (c1 == '\0') {
+ rrd_set_error("Function %s needs parameters. Line: %s\n",funcname,line);
+ return 1;
+ }
+ if (c1 == ':') (*eaten)++;
+
+ /* Some commands have a parameter before the colon
+ * (currently only LINE)
+ */
+ switch (gdp->gf) {
+ case GF_LINE:
+ if (c1 == ':') {
+ gdp->linewidth=1;
+ dprintf("- - using default width of 1\n");
+ } else {
+ i=0;sscanf(&line[*eaten],"%lf:%n",&gdp->linewidth,&i);
+ if (!i) {
+ rrd_set_error("Cannot parse line width '%s' in line '%s'\n",&line[*eaten],line);
+ return 1;
+ } else {
+ dprintf("- - scanned width %f\n",gdp->linewidth);
+ if (isnan(gdp->linewidth)) {
+ rrd_set_error("LINE width '%s' is not a number in line '%s'\n",&line[*eaten],line);
+ return 1;
+ }
+ if (isinf(gdp->linewidth)) {
+ rrd_set_error("LINE width '%s' is out of range in line '%s'\n",&line[*eaten],line);
+ return 1;
+ }
+ if (gdp->linewidth<0) {
+ rrd_set_error("LINE width '%s' is less than 0 in line '%s'\n",&line[*eaten],line);
+ return 1;
+ }
+ }
+ (*eaten)+=i;
+ }
+ break;
+ default:
+ if (c1 == ':') break;
+ rrd_set_error("Malformed '%s' command in line '%s'\n",&line[*eaten],line);
+ return 1;
+ }
+ if (line[*eaten] == '\0') {
+ rrd_set_error("Expected some arguments after '%s'\n",line);
+ return 1;
+ }
+ return 0;
+}
+
+int
+rrd_parse_legend(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp) {
+ int i;
+
+ if (line[*eaten]=='\0' || line[*eaten]==':') {
+ dprintf("- no (or: empty) legend found\n");
+ return 0;
+ }
+
+ i=scan_for_col(&line[*eaten],FMT_LEG_LEN,gdp->legend);
+
+ (*eaten)+=i;
+
+ if (line[*eaten]!='\0' && line[*eaten]!=':') {
+ rrd_set_error("Legend too long");
+ return 1;
+ } else {
return 0;
}
+}
+
+int
+rrd_parse_color(const char *const string, graph_desc_t *const gdp) {
+ unsigned int r=0,g=0,b=0,a=0,i;
+
+ /* matches the following formats:
+ ** RGB
+ ** RGBA
+ ** RRGGBB
+ ** RRGGBBAA
+ */
+
+ i=0;
+ while (string[i] && isxdigit((unsigned int)string[i])) i++;
+ if (string[i] != '\0') return 1; /* garbage follows hexdigits */
+ switch (i) {
+ case 3:
+ case 4:
+ sscanf(string, "%1x%1x%1x%1x",&r,&g,&b,&a);
+ r *= 0x11;
+ g *= 0x11;
+ b *= 0x11;
+ a *= 0x11;
+ if (i==3) a=0xFF;
+ break;
+ case 6:
+ case 8:
+ sscanf(string, "%02x%02x%02x%02x",&r,&g,&b,&a);
+ if (i==6) a=0xFF;
+ break;
+ default:
+ return 1; /* wrong number of digits */
+ }
+ gdp->col = r<<24|g<<16|b<<8|a;
+ return 0;
+}
+
+int
+rrd_parse_CF(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, enum cf_en *cf) {
+ char symname[CF_NAM_SIZE];
+ int i=0;
+
+ sscanf(&line[*eaten], CF_NAM_FMT "%n", symname,&i);
+ if ((!i)||((line[(*eaten)+i]!='\0')&&(line[(*eaten)+i]!=':'))) {
+ rrd_set_error("Cannot parse CF in '%s'",line);
+ return 1;
+ }
+ (*eaten)+=i;
+ dprintf("- using CF '%s'\n",symname);
+
+ if ((int)(*cf = cf_conv(symname))==-1) {
+ rrd_set_error("Unknown CF '%s' in '%s'",symname,line);
+ return 1;
+ }
+
+ if (line[*eaten]!='\0') (*eaten)++;
+ return 0;
+}
+
+/* Try to match next token as a vname.
+ *
+ * Returns:
+ * -1 an error occured and the error string is set
+ * other the vname index number
+ *
+ * *eaten is incremented only when a vname is found.
+ */
+int
+rrd_parse_find_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ char tmpstr[MAX_VNAME_LEN+1];
+ int i;
+ long vidx;
+
+ i=0;sscanf(&line[*eaten], DEF_NAM_FMT "%n", tmpstr,&i);
+ if (!i) {
+ rrd_set_error("Could not parse line '%s'",line);
+ return -1;
+ }
+ if (line[*eaten+i]!=':' && line[*eaten+i]!='\0') {
+ rrd_set_error("Could not parse line '%s'",line);
+ return -1;
+ }
+ dprintf("- Considering '%s'\n",tmpstr);
+
+ if ((vidx=find_var(im,tmpstr))<0) {
+ dprintf("- Not a vname\n");
+ rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
+ return -1;
+ }
+ dprintf("- Found vname '%s' vidx '%li'\n",tmpstr,gdp->vidx);
+ if (line[*eaten+i]==':') i++;
+ (*eaten)+=i;
+ return vidx;
+}
+
+/* Parsing old-style xPRINT and new-style xPRINT */
+int
+rrd_parse_print(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ /* vname:CF:format in case of DEF-based vname
+ ** vname:CF:format in case of CDEF-based vname
+ ** vname:format[:strftime] in case of VDEF-based vname
+ */
+ if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
+
+ switch (im->gdes[gdp->vidx].gf) {
+ case GF_DEF:
+ case GF_CDEF:
+ dprintf("- vname is of type DEF or CDEF, looking for CF\n");
+ if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
+ break;
+ case GF_VDEF:
+ dprintf("- vname is of type VDEF\n");
+ break;
+ default:
+ rrd_set_error("Encountered unknown type variable '%s'",im->gdes[gdp->vidx].vname);
+ return 1;
+ }
- /* Check if this is an unused variable */
- vidx=find_var(im,im->gdes[im->gdes_c-1].vname);
- if (vidx!=-1) {
- switch(im->gdes[vidx].gf) {
+ if (rrd_parse_legend(line,eaten,gdp)) return 1;
+ /* for *PRINT the legend itself gets rendered later. We only
+ get the format at this juncture */
+ strcpy(gdp->format,gdp->legend);
+ gdp->legend[0]='\0';
+ /* this is a very crud test, parsing :style flags should be in a function */
+ if (im->gdes[gdp->vidx].gf == GF_VDEF && strcmp(line+(*eaten),":strftime")==0){
+ gdp->strftm = 1;
+ (*eaten)+=strlen(":strftime");
+ }
+ return 0;
+}
+
+/* SHIFT:_def_or_cdef:_vdef_or_number_
+ */
+int
+rrd_parse_shift(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ int i;
+
+ if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
+
+ switch (im->gdes[gdp->vidx].gf) {
+ case GF_DEF:
+ case GF_CDEF:
+ dprintf("- vname is of type DEF or CDEF, OK\n");
+ break;
+ case GF_VDEF:
+ rrd_set_error("Cannot shift a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
+ return 1;
+ default:
+ rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
+ return 1;
+ }
+
+ if ((gdp->shidx=rrd_parse_find_vname(line,eaten,gdp,im))>=0) {
+ switch (im->gdes[gdp->shidx].gf) {
case GF_DEF:
- rrd_set_error("Duplicate variable in %s: '%s' defined as DEF",
- err,im->gdes[im->gdes_c-1].vname);
- break;
case GF_CDEF:
- rrd_set_error("Duplicate variable in %s: '%s' defined as CDEF",
- err,im->gdes[im->gdes_c-1].vname);
- break;
+ rrd_set_error("Offset cannot be a (C)DEF: '%s' in line '%s'\n",im->gdes[gdp->shidx].vname,line);
+ return 1;
case GF_VDEF:
- rrd_set_error("Duplicate variable in %s: '%s' defined as VDEF",
- err,im->gdes[im->gdes_c-1].vname);
+ dprintf("- vname is of type VDEF, OK\n");
break;
default:
- rrd_set_error("Duplicate variable in %s: '%s' defined",
- err,im->gdes[im->gdes_c-1].vname);
+ rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
+ return 1;
+ }
+ } else {
+ rrd_clear_error();
+ i=0; sscanf(&line[*eaten],"%li%n",&gdp->shval,&i);
+ if (i!=(int)strlen(&line[*eaten])) {
+ rrd_set_error("Not a valid offset: %s in line %s",&line[*eaten],line);
+ return 1;
+ }
+ (*eaten)+=i;
+ dprintf("- offset is number %li\n",gdp->shval);
+ gdp->shidx = -1;
+ }
+ return 0;
+}
+
+/* XPORT:_def_or_cdef[:legend]
+ */
+int
+rrd_parse_xport(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ if ((gdp->vidx=rrd_parse_find_vname(line,eaten,gdp,im))<0) return 1;
+
+ switch (im->gdes[gdp->vidx].gf) {
+ case GF_DEF:
+ case GF_CDEF:
+ dprintf("- vname is of type DEF or CDEF, OK\n");
+ break;
+ case GF_VDEF:
+ rrd_set_error("Cannot xport a VDEF: '%s' in line '%s'\n",im->gdes[gdp->vidx].vname,line);
+ return 1;
+ default:
+ rrd_set_error("Encountered unknown type variable '%s' in line '%s'",im->gdes[gdp->vidx].vname,line);
+ return 1;
+ }
+ dprintf("- looking for legend in '%s'\n",&line[*eaten]);
+ if (rrd_parse_legend(line,eaten,gdp)) return 1;
+ return 0;
+}
+
+/* Parsing of PART, VRULE, HRULE, LINE, AREA, STACK and TICK
+** is done in one function.
+**
+** Stacking PART, VRULE, HRULE or TICK is not allowed.
+**
+** If a number (which is valid to enter) is more than a
+** certain amount of characters, it is caught as an error.
+** While this is arguable, so is entering fixed numbers
+** with more than MAX_VNAME_LEN significant digits.
+*/
+int
+rrd_parse_PVHLAST(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ int i,j,k;
+ int colorfound=0;
+ char tmpstr[MAX_VNAME_LEN + 10]; /* vname#RRGGBBAA\0 */
+ static int spacecnt = 0;
+
+ if (spacecnt == 0) {
+ float one_space = gfx_get_text_width(im->canvas, 0,
+ im->text_prop[TEXT_PROP_LEGEND].font,
+ im->text_prop[TEXT_PROP_LEGEND].size,
+ im->tabwidth," ", 0) / 4.0;
+ float target_space = gfx_get_text_width(im->canvas, 0,
+ im->text_prop[TEXT_PROP_LEGEND].font,
+ im->text_prop[TEXT_PROP_LEGEND].size,
+ im->tabwidth,"oo", 0);
+ spacecnt = target_space / one_space;
+ dprintf("- spacecnt: %i onespace: %f targspace: %f\n",spacecnt,one_space,target_space);
+ }
+
+
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+
+ /* have simpler code in the drawing section */
+ if ( gdp->gf == GF_STACK ){
+ gdp->stack=1;
+ }
+
+ i=scan_for_col(&line[*eaten],MAX_VNAME_LEN+9,tmpstr);
+ if (line[*eaten+i]!='\0' && line[*eaten+i]!=':') {
+ rrd_set_error("Cannot parse line '%s'",line);
+ return 1;
+ }
+
+ j=i; while (j>0 && tmpstr[j]!='#') j--;
+
+ if (j) {
+ tmpstr[j]='\0';
+ }
+ /* We now have:
+ * tmpstr[0] containing vname
+ * tmpstr[j] if j!=0 then containing color
+ * i size of vname + color
+ * j if j!=0 then size of vname
+ */
+
+ /* Number or vname ?
+ * If it is an existing vname, that's OK, provided that it is a
+ * valid type (need time for VRULE, not a float)
+ * Else see if it parses as a number.
+ */
+ dprintf("- examining string '%s'\n",tmpstr);
+ if ((gdp->vidx=find_var(im,tmpstr))>=0) {
+ dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
+ switch (gdp->gf) {
+#ifdef WITH_PIECHART
+ case GF_PART:
+#endif
+ case GF_VRULE:
+ case GF_HRULE:
+ if (im->gdes[gdp->vidx].gf != GF_VDEF) {
+ rrd_set_error("Using vname %s of wrong type in line %s\n",im->gdes[gdp->gf].vname,line);
+ return 1;
+ }
break;
- };
- im_free(im);
+ default:;
+ }
+ } else {
+ dprintf("- it is not an existing vname\n");
+ switch (gdp->gf) {
+ case GF_VRULE:
+ k=0;sscanf(tmpstr,"%li%n",&gdp->xrule,&k);
+ if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
+ dprintf("- found time: %li\n",gdp->xrule);
+ } else {
+ dprintf("- is is not a valid number: %li\n",gdp->xrule);
+ rrd_set_error("parameter '%s' does not represent time in line %s\n",tmpstr,line);
+ return 1;
+ }
+ default:
+ k=0;sscanf(tmpstr,"%lf%n",&gdp->yrule,&k);
+ if (((j!=0)&&(k==j))||((j==0)&&(k==i))) {
+ dprintf("- found number: %f\n",gdp->yrule);
+ } else {
+ dprintf("- is is not a valid number: %li\n",gdp->xrule);
+ rrd_set_error("parameter '%s' does not represent a number in line %s\n",tmpstr,line);
+ return 1;
+ }
+ }
+ }
+
+ if (j) {
+ j++;
+ dprintf("- examining color '%s'\n",&tmpstr[j]);
+ if (rrd_parse_color(&tmpstr[j],gdp)) {
+ rrd_set_error("Could not parse color in '%s'",&tmpstr[j]);
+ return 1;
+ }
+ dprintf("- parsed color 0x%08x\n",(unsigned int)gdp->col);
+ colorfound=1;
+ } else {
+ dprintf("- no color present in '%s'\n",tmpstr);
+ }
+
+ (*eaten) += i; /* after vname#color */
+ if (line[*eaten]!='\0') {
+ (*eaten)++; /* after colon */
+ }
+
+ if (gdp->gf == GF_TICK) {
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+ dprintf("- looking for optional TICK number\n");
+ j=0;
+ sscanf(&line[*eaten],"%lf%n",&gdp->yrule,&j);
+ if (j) {
+ if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
+ rrd_set_error("Cannot parse TICK fraction '%s'",line);
+ return 1;
+ }
+ dprintf("- found number %f\n",gdp->yrule);
+ if (gdp->yrule > 1.0 || gdp->yrule < -1.0) {
+ rrd_set_error("Tick factor should be <= 1.0");
+ return 1;
+ }
+ (*eaten)+=j;
+ } else {
+ dprintf("- not found, defaulting to 0.1\n");
+ gdp->yrule=0.1;
+ }
+ if (line[*eaten] == '\0') {
+ dprintf("- done parsing line\n");
+ return 0;
+ } else { if (line[*eaten] == ':') {
+ (*eaten)++;
+ } else {
+ rrd_set_error("Can't make sense of that TICK line");
+ return 1;
+ }
+ }
+ }
+
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+
+ /* Legend is next. A legend without a color is an error.
+ ** Stacking an item without having a legend is OK however
+ ** then an empty legend should be specified.
+ ** LINE:val#color:STACK means legend is string "STACK"
+ ** LINE:val#color::STACK means no legend, and do STACK
+ ** LINE:val:STACK is an error (legend but no color)
+ ** LINE:val::STACK means no legend, and do STACK
+ */
+ if (colorfound) {
+ int err=0;
+ char *linecp = strdup(line);
+ dprintf("- looking for optional legend\n");
+
+ dprintf("- examining '%s'\n",&line[*eaten]);
+ if (linecp[*eaten] != '\0' && linecp[*eaten] != ':') {
+ int spi;
+ /* If the legend is not empty, it has to be prefixed with spacecnt ' ' characters. This then gets
+ * replaced by the color box later on. */
+ for (spi=0;spi<spacecnt && (*eaten) > 1;spi++){
+ linecp[--(*eaten)]=' ';
+ }
+ }
+
+ if (rrd_parse_legend(linecp, eaten, gdp)) err=1;
+ free(linecp);
+ if (err) return 1;
+
+ dprintf("- found legend '%s'\n", &gdp->legend[2]);
+ } else {
+ dprintf("- skipping empty legend\n");
+ if (line[*eaten] != '\0' && line[*eaten] != ':') {
+ rrd_set_error("Legend set but no color: %s",&line[*eaten]);
+ return 1;
+ }
+ }
+ if (line[*eaten]=='\0') {
+ dprintf("- done parsing line\n");
return 0;
}
+ (*eaten)++; /* after colon */
- /* VNAME must start with a character other than numeric */
- if (isdigit(im->gdes[im->gdes_c-1].vname[0])) {
- rrd_set_error("Variable in %s starts with a digit: '%s'",
- err,im->gdes[im->gdes_c-1].vname);
- im_free(im);
+ /* PART, HRULE, VRULE and TICK cannot be stacked. */
+ if ( (gdp->gf == GF_HRULE)
+ || (gdp->gf == GF_VRULE)
+#ifdef WITH_PIECHART
+ || (gdp->gf == GF_PART)
+#endif
+ || (gdp->gf == GF_TICK)
+ ) return 0;
+
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+ if (line[*eaten]!='\0') {
+ dprintf("- still more, should be STACK\n");
+ j=scan_for_col(&line[*eaten],5,tmpstr);
+ if (line[*eaten+j]!='\0' && line[*eaten+j]!=':') {
+ /* not 5 chars */
+ rrd_set_error("Garbage found where STACK expected");
+ return 1;
+ }
+ if (!strcmp("STACK",tmpstr)) {
+ dprintf("- found STACK\n");
+ gdp->stack=1;
+ (*eaten)+=j;
+ } else {
+ rrd_set_error("Garbage found where STACK expected");
+ return 1;
+ }
+ }
+ if (line[*eaten]=='\0') {
+ dprintf("- done parsing line\n");
return 0;
- };
+ }
+ (*eaten)++;
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+
+ return 0;
+}
- /* Reserved words checking. Not at the moment. */
+int
+rrd_parse_make_vname(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ char tmpstr[MAX_VNAME_LEN + 10];
+ int i=0;
- return n;
+ sscanf(&line[*eaten], DEF_NAM_FMT "=%n", tmpstr,&i);
+ if (!i) {
+ rrd_set_error("Cannot parse vname from '%s'",line);
+ return 1;
+ }
+ dprintf("- found candidate '%s'\n",tmpstr);
+
+ if ((gdp->vidx=find_var(im,tmpstr))>=0) {
+ rrd_set_error("Attempting to reuse '%s'",im->gdes[gdp->vidx].vname);
+ return 1;
+ }
+ strcpy(gdp->vname,tmpstr);
+ dprintf("- created vname '%s' vidx %lu\n", gdp->vname,im->gdes_c-1);
+ (*eaten)+=i;
+ return 0;
}
-/**********************************************************
- *** ***
- **********************************************************/
+int
+rrd_parse_def(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ int i=0;
+ char command[7]; /* step, start, end, reduce */
+ char tmpstr[256];
+ struct rrd_time_value start_tv,end_tv;
+ time_t start_tmp=0,end_tmp=0;
+ char *parsetime_error=NULL;
+
+ start_tv.type = end_tv.type=ABSOLUTE_TIME;
+ start_tv.offset = end_tv.offset=0;
+ localtime_r(&gdp->start, &start_tv.tm);
+ localtime_r(&gdp->end, &end_tv.tm);
+
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+ dprintf("- from line '%s'\n",line);
+ if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
+ i=scan_for_col(&line[*eaten],254,gdp->rrd);
+ if (line[*eaten+i]!=':') {
+ rrd_set_error("Problems reading database name");
+ return 1;
+ }
+ (*eaten)+=++i;
+ dprintf("- using file '%s'\n",gdp->rrd);
+
+ i=0;
+ sscanf(&line[*eaten], DS_NAM_FMT ":%n", gdp->ds_nam,&i);
+ if (!i) {
+ rrd_set_error("Cannot parse DS in '%s'",line);
+ return 1;
+ }
+ (*eaten)+=i;
+ dprintf("- using DS '%s'\n",gdp->ds_nam);
+
+ if (rrd_parse_CF(line,eaten,gdp,&gdp->cf)) return 1;
+ gdp->cf_reduce = gdp->cf;
+
+ if (line[*eaten]=='\0') return 0;
+
+ while (1) {
+ dprintf("- optional parameter follows: %s\n", &line[*eaten]);
+ i=0;
+ sscanf(&line[*eaten], "%6[a-z]=%n", command, &i);
+ if (!i) {
+ rrd_set_error("Parse error in '%s'",line);
+ return 1;
+ }
+ (*eaten)+=i;
+ dprintf("- processing '%s'\n",command);
+ if (!strcmp("reduce",command)) {
+ if (rrd_parse_CF(line,eaten,gdp,&gdp->cf_reduce)) return 1;
+ if (line[*eaten] != '\0')
+ (*eaten)--;
+ } else if (!strcmp("step",command)) {
+ i=0;
+ sscanf(&line[*eaten],"%lu%n",&gdp->step,&i);
+ gdp->step_orig = gdp->step;
+ (*eaten)+=i;
+ dprintf("- using step %lu\n",gdp->step);
+ } else if (!strcmp("start",command)) {
+ i=scan_for_col(&line[*eaten],255,tmpstr);
+ (*eaten)+=i;
+ if ((parsetime_error = parsetime(tmpstr, &start_tv))) {
+ rrd_set_error( "start time: %s", parsetime_error );
+ return 1;
+ }
+ dprintf("- done parsing: '%s'\n",&line[*eaten]);
+ } else if (!strcmp("end",command)) {
+ i=scan_for_col(&line[*eaten],255,tmpstr);
+ (*eaten)+=i;
+ if ((parsetime_error = parsetime(tmpstr, &end_tv))) {
+ rrd_set_error( "end time: %s", parsetime_error );
+ return 1;
+ }
+ dprintf("- done parsing: '%s'\n",&line[*eaten]);
+ } else {
+ rrd_set_error("Parse error in '%s'",line);
+ return 1;
+ }
+ if (line[*eaten]=='\0') break;
+ if (line[*eaten]!=':') {
+ dprintf("- Expected to see end of string but got '%s'\n",\
+ &line[*eaten]);
+ rrd_set_error("Parse error in '%s'",line);
+ return 1;
+ }
+ (*eaten)++;
+ }
+ if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
+ /* error string is set in parsetime.c */
+ return 1;
+ }
+ if (start_tmp < 3600*24*365*10) {
+ rrd_set_error("the first entry to fetch should be "
+ "after 1980 (%ld)",start_tmp);
+ return 1;
+ }
+
+ if (end_tmp < start_tmp) {
+ rrd_set_error("start (%ld) should be less than end (%ld)",
+ start_tmp, end_tmp);
+ return 1;
+ }
+
+ gdp->start = start_tmp;
+ gdp->end = end_tmp;
+ gdp->start_orig = start_tmp;
+ gdp->end_orig = end_tmp;
+
+ dprintf("- start time %lu\n",gdp->start);
+ dprintf("- end time %lu\n",gdp->end);
+
+ return 0;
+}
+
+int
+rrd_parse_vdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ char tmpstr[MAX_VNAME_LEN+1]; /* vname\0 */
+ int i=0;
+
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+ if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
+
+ sscanf(&line[*eaten], DEF_NAM_FMT ",%n", tmpstr,&i);
+ if (!i) {
+ rrd_set_error("Cannot parse line '%s'",line);
+ return 1;
+ }
+ if ((gdp->vidx=find_var(im,tmpstr))<0) {
+ rrd_set_error("Not a valid vname: %s in line %s",tmpstr,line);
+ return 1;
+ }
+ if ( im->gdes[gdp->vidx].gf != GF_DEF
+ && im->gdes[gdp->vidx].gf != GF_CDEF) {
+ rrd_set_error("variable '%s' not DEF nor "
+ "CDEF in VDEF '%s'", tmpstr,gdp->vname);
+ return 1;
+ }
+ dprintf("- found vname: '%s' vidx %li\n",tmpstr,gdp->vidx);
+ (*eaten)+=i;
+
+ dprintf("- calling vdef_parse with param '%s'\n",&line[*eaten]);
+ vdef_parse(gdp,&line[*eaten]);
+ while (line[*eaten]!='\0'&&line[*eaten]!=':')
+ (*eaten)++;
+
+ return 0;
+}
+
+int
+rrd_parse_cdef(const char *const line, unsigned int *const eaten, graph_desc_t *const gdp, image_desc_t *const im) {
+ dprintf("- parsing '%s'\n",&line[*eaten]);
+ if (rrd_parse_make_vname(line,eaten,gdp,im)) return 1;
+ if ((gdp->rpnp = rpn_parse(
+ (void *)im,
+ &line[*eaten],
+ &find_var_wrapper)
+ )==NULL) {
+ rrd_set_error("invalid rpn expression in: %s",&line[*eaten]);
+ return 1;
+ };
+ while (line[*eaten]!='\0'&&line[*eaten]!=':')
+ (*eaten)++;
+ return 0;
+}
+
+void
+rrd_graph_script(int argc, char *argv[], image_desc_t *const im, int optno) {
+ int i;
+ /* save state for STACK backward compat function */
+ enum gf_en last_gf=GF_PRINT;
+ float last_linewidth=0.0;
+
+ for (i=optind+optno;i<argc;i++) {
+ graph_desc_t *gdp;
+ unsigned int eaten=0;
+
+ if (gdes_alloc(im)) return; /* the error string is already set */
+ gdp = &im->gdes[im->gdes_c-1];
+#ifdef DEBUG
+ gdp->debug = 1;
+#endif
+
+ if (rrd_parse_find_gf(argv[i],&eaten,gdp)) return;
+
+ switch (gdp->gf) {
+ case GF_SHIFT: /* vname:value */
+ if (rrd_parse_shift(argv[i],&eaten,gdp,im)) return;
+ break;
+ case GF_XPORT:
+ if (rrd_parse_xport(argv[i],&eaten,gdp,im)) return;
+ break;
+ case GF_PRINT: /* vname:CF:format -or- vname:format */
+ im->prt_c++;
+ case GF_GPRINT: /* vname:CF:format -or- vname:format */
+ if (rrd_parse_print(argv[i],&eaten,gdp,im)) return;
+ break;
+ case GF_COMMENT: /* text */
+ if (rrd_parse_legend(argv[i],&eaten,gdp)) return;
+ break;
+#ifdef WITH_PIECHART
+ case GF_PART: /* value[#color[:legend]] */
+#endif
+ case GF_VRULE: /* value#color[:legend] */
+ case GF_HRULE: /* value#color[:legend] */
+ case GF_LINE: /* vname-or-value[#color[:legend]][:STACK] */
+ case GF_AREA: /* vname-or-value[#color[:legend]][:STACK] */
+ case GF_TICK: /* vname#color[:num[:legend]] */
+ if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
+ last_gf = gdp->gf;
+ last_linewidth = gdp->linewidth;
+ break;
+ case GF_STACK: /* vname-or-value[#color[:legend]] */
+ if (rrd_parse_PVHLAST(argv[i],&eaten,gdp,im))return;
+ if (last_gf == GF_LINE || last_gf == GF_AREA){
+ gdp->gf = last_gf;
+ gdp->linewidth = last_linewidth;
+ } else {
+ rrd_set_error("STACK must follow LINE or AREA! command:\n%s",
+ &argv[i][eaten],argv[i]);
+ return;
+ }
+ break;
+ /* data acquisition */
+ case GF_DEF: /* vname=x:DS:CF:[:step=#][:start=#][:end=#] */
+ if (rrd_parse_def(argv[i],&eaten,gdp,im)) return;
+ break;
+ case GF_CDEF: /* vname=rpn-expression */
+ if (rrd_parse_cdef(argv[i],&eaten,gdp,im)) return;
+ break;
+ case GF_VDEF: /* vname=rpn-expression */
+ if (rrd_parse_vdef(argv[i],&eaten,gdp,im)) return;
+ break;
+ }
+ if (gdp->debug) {
+ dprintf("used %i out of %i chars\n",eaten,strlen(argv[i]));
+ dprintf("parsed line: '%s'\n",argv[i]);
+ dprintf("remaining: '%s'\n",&argv[i][eaten]);
+ if (eaten >= strlen(argv[i]))
+ dprintf("Command finished successfully\n");
+ }
+ if (eaten < strlen(argv[i])) {
+ rrd_set_error("Garbage '%s' after command:\n%s",
+ &argv[i][eaten],argv[i]);
+ return;
+ }
+ }
+}
projects / rrdtool.git / blobdiff