static int parse_metar(char *file){ FILE *fp; char *s, *c; int ovector[ovecsize]; int ovalue; int len; float f; int i, j; reset_current(¤t); if((fp=fopen(file, "r"))==NULL) return 0; len=fread(bigbuf, sizeof(char), BIGBUF_LEN-2, fp); fclose(fp); if(len<1) return 0; for(i=0; i<len; i++){ if(isspace(bigbuf[i])) bigbuf[i]=' '; } c=strstr(bigbuf, " RMK"); if(c!=NULL) *(c+1)='\0'; c=strstr(bigbuf, " TEMPO"); s=strstr(bigbuf, " BECMG"); if(c!=NULL) *(c+1)='\0'; if(s!=NULL) *(s+1)='\0'; /* XXX: parse trend forecast data? */ len=strlen(bigbuf); if(bigbuf[len-1]!=' '){ bigbuf[len++]=' '; bigbuf[len]='\0'; } /* Look for something like a METAR coded report */ ovalue=pcre_exec(station_time, NULL, bigbuf, len, 0, 0, ovector, ovecsize); if(ovalue<=0) return 0; if(pcre_get_substring(bigbuf, ovector, ovalue, 1, (const char **)&c)<0) return 0; if(c[0]!='\0') current.date=atoi(c); pcre_free_substring(c); if(pcre_get_substring(bigbuf, ovector, ovalue, 2, (const char **)&c)<0) return 0; current.time=atoi(c); pcre_free_substring(c); /* Chop off extraneous stuff */ if(pcre_get_substring(bigbuf, ovector, ovalue, 3, (const char **)&s)<0) return 0; /* windspeed, winddir */ ovalue=pcre_exec(wind, NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(4, c); if(c[0]!='\0'){ current.winddir=0; } else { pcre_free_substring(c); get_substr(1, c); if(c[0]=='V') current.winddir=0; else current.winddir=((int)((atoi(c)+11.25)/22.5))%16+1; } pcre_free_substring(c); get_substr(2, c); current.windspeed=atoi(c); pcre_free_substring(c); get_substr(3, c); if(c[0]=='M'){ /* MPS */ current.windspeed=mps2knots(current.windspeed); } else if(c[0]=='K' && c[1]=='M'){ /* KMH */ current.windspeed=kph2knots(current.windspeed); } } /* vis */ f=99; c=strstr(s, " M1/4SM "); if(c!=NULL){ f=0; goto wind_done; } ovalue=pcre_exec(vis[2], NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(2, c); i=atoi(c); pcre_free_substring(c); get_substr(3, c); j=atoi(c); pcre_free_substring(c); get_substr(1, c); f=atoi(c)+(float)i/j; pcre_free_substring(c); goto wind_done; } ovalue=pcre_exec(vis[1], NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(2, c); i=atoi(c); pcre_free_substring(c); get_substr(1, c); f=(float)atoi(c)/i; pcre_free_substring(c); goto wind_done; } ovalue=pcre_exec(vis[0], NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(1, c); f=atoi(c); pcre_free_substring(c); goto wind_done; } c=strstr(s, " CAVOK "); if(c!=NULL){ f=99; current.sky=0; goto wind_done; } ovalue=pcre_exec(vis[3], NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(1, c); f=m2mi(atoi(c)); pcre_free_substring(c); goto wind_done; } wind_done: if(f<=6) current.vis=6; if(f<=5) current.vis=5; if(f<3) current.vis=4; if(f<1) current.vis=3; if(f<=.5) current.vis=2; if(f<=.25) current.vis=1; /* temp, rh */ ovalue=pcre_exec(temp, NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(1, c); if(c[0]=='M') c[0]='-'; current.temp=atoi(c); pcre_free_substring(c); get_substr(2, c); if(c[0]!='\0'){ if(c[0]=='M') c[0]='-'; current.rh=rh_C(current.temp, atoi(c)); } pcre_free_substring(c); } /* pressure */ ovalue=pcre_exec(pressure, NULL, s, len, 0, 0, ovector, ovecsize); if(ovalue>0){ get_substr(2, c); i=atoi(c); pcre_free_substring(c); get_substr(1, c); if(c[0]=='Q'){ current.pressure=hPa2inHg(i); } else { current.pressure=i/100.0; } pcre_free_substring(c); } /* sky */ if(strstr(s, " SKC")!=NULL || strstr(s, " CLR")!=NULL) current.sky=0; if(strstr(s, " FEW")!=NULL) current.sky=1; if(strstr(s, " SCT")!=NULL) current.sky=2; if(strstr(s, " BKN")!=NULL) current.sky=3; if(strstr(s, " OVC")!=NULL || strstr(s, " VV")!=NULL) current.sky=4; /* obs, frz, snow, rain, tstorm */ /* There can be multiple weather chunks, so we while loop */ j=0; while((ovalue=pcre_exec(weather, NULL, s, len, j, 0, ovector, ovecsize))>0){{ char *in, *de, *pp, *ob, *ot; j=ovector[0]+1; get_substr(0, c); i=(c[1]=='\0'); pcre_free_substring(c); if(i) continue; get_substr(1, in); get_substr(2, de); get_substr(3, pp); get_substr(4, ob); get_substr(5, ot); #define IN(haystack, needle) ((needle[0]=='\0')?0:strstr(haystack, needle)) if(current.obs<1 && strcmp(de, "FZ") && IN("BR|FG", ob)) current.obs=1; if(current.obs<2 && IN("FU|VA|DU|SA|HZ|PY", ob)) current.obs=2; if(current.obs<3 && IN("PO|SS|DS", ot)) current.obs=3; if(current.obs<3 && IN("DR|BL", de) && (strstr(pp, "SN") || IN("DU|SA|PY", ob))) current.obs=3; if(!strcmp(ot, "FC")){ current.sky=5; current.obs=99; current.vis=7; } #undef IN i=66; if(in[0]=='-' || in[0]=='V') i=33; if(in[0]=='+') i=99; if(!strcmp(de, "SH")) i=33; if(current.frz<i && ((!strcmp(de, "FZ") && (strstr(pp, "DZ") || strstr(pp, "RA"))) || strstr(pp, "IC") || strstr(pp, "PE") || strstr(pp, "PL") || strstr(pp, "GR") || strstr(pp, "GS"))) current.frz=i; if(current.snow<i && strcmp(de, "BL") && (strstr(pp, "SN") || strstr(pp, "SG"))) current.snow=i; if(current.rain<i && (strstr(pp, "UP") || (strcmp(de, "FZ") && (strstr(pp, "DZ") || strstr(pp, "RA"))))) current.rain=i; if(current.tstorm<i && !strcmp(de, "TS")) current.tstorm=i; pcre_free_substring(in); pcre_free_substring(de); pcre_free_substring(pp); pcre_free_substring(ob); pcre_free_substring(ot); }} if(current.obs==99) current.obs=0; pcre_free_substring(s); /* Done parsing! Just a few final calculations... */ current.heatindex=heatindex_C(current.temp, current.rh); current.windchill=windchill_C(current.temp, current.windspeed); /* Figure out the proper month... */ { int mon, day, year, time2; /* holds UTC */ int y; /* with current.*, holds local time */ time_t t=time(NULL); struct tm *tm=gmtime(&t); current.month=tm->tm_mon+1; if(tm->tm_mday<current.date) current.month--; if(current.month<1){ current.month+=12; tm->tm_year--; } y=year=tm->tm_year; mon=current.month; day=current.date; time2=current.time; current.time=utc2local((int)current.time, ¤t.month, ¤t.date, &y, NULL); if(latitude!=999 && calcSolarZenith(latitude, longitude, year, mon, day, hm2min(time2))>90) current.moon=calc_moon(current.month, current.date, y, current.time); } return 1; }
int edit_image(char filename[], char newfilename[], double **ppix ) { fitsfile *fptr, *newfptr; int status, nfound, day, month, year, timeref; int naxis = 2; /* 2-dimensional image */ int bitpix = DOUBLE_IMG; /* Output image type is double */ int datatype = TDOUBLE; long naxes[2]; /* dimensions of the image */ long fpixel, npixels; char date[FLEN_VALUE], time[FLEN_VALUE]; char *nullcomment; char outfilename[MAXLENGTH]; nullcomment=0; /***********************************************************************/ status = 0; /* Initialize status before calling fitsio routines */ /***********************************************************************/ /* Copy newfilename to outfilename. 'newfilename' is passed has a reference, * therefore any change to it will be passed back to the calling routine * which is not really what one wants. (as I discovered...) * The addition of the '!' is meaningful here but not necessarly useful in * the calling routine. */ if (!strcmp(newfilename,filename)) { strcpy(outfilename,"!"); strcat(outfilename,filename); } else { strcpy(outfilename,newfilename); } printf("Writing %s ... ",newfilename); fflush(stdout); /* Open the existing FITS file */ if ( fits_open_file(&fptr, filename, READONLY, &status) ) printerror( status ); /* Create the new FITS file (should I use a template?)*/ if ( fits_create_file(&newfptr, outfilename, &status) ) printerror( status ); /* No need to create an image in the new FITS file because the primary * array is automatically created when the header is copied */ /* Copy the header from the existing FITS file to the new FITS file */ if ( fits_copy_header(fptr, newfptr, &status) ) printerror( status ); /* Get the length of the axes */ if ( fits_read_keys_lng(newfptr, "NAXIS", 1, 2, naxes, &nfound, &status) ) printerror( status ); /* Write the image (array of pixel values) in the new FITS file */ fpixel = 1; /* first pixel to write */ npixels = naxes[0] * naxes[1]; /* number of pixels to write */ if ( fits_write_img(newfptr, datatype, fpixel, npixels, ppix[0], &status) ) printerror( status ); /* Edit header */ if ( fits_get_system_date(&day, &month, &year, &status) ) printerror( status ); if ( fits_date2str(year, month, day, date, &status) ) printerror( status ); if ( fits_update_key(newfptr, TSTRING, "DATE", date, "", &status) ) printerror( status ); if ( fits_get_system_time(time, &timeref, &status) ) printerror( status ); if ( timeref == 0 ) /* Convert UTC/GMT to Local time */ if ( utc2local(time, FITS_FMT) ) { printf("Error : Unable to convert time.\n"); exit(1); } if ( status = cnvtimefmt(time, FITS_FMT, IRAF_FMT)) printerror( status ); /* Stupid IRAF cannot read the new FITS * date-time Y2K format */ if ( fits_update_key(newfptr, TSTRING, "IRAF-TLM", time, nullcomment, &status) ) printerror( status ); /* Close the existing FITS file */ if ( fits_close_file(fptr, &status) ) printerror( status ); /* Close the new FITS file */ if ( fits_close_file(newfptr, &status) ) printerror( status ); printf("done\n"); return(0); }