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/*
* VOTPOS -- Extract the main positional columns from a VOTable.
*
* Usage:
* votpos [<opts>] votable.xml
*
* where
* -%%,--test run unit tests
* -h,--help this message
* -n,--number number output
* -o,--output=<file> output file
* -r,--return return result from method
*
* @file votpos.c
* @author Mike Fitzpatrick
* @date 6/03/12
*
* @brief Extract the main positional columns from a VOTable.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include "votParse.h"
#include "voApps.h"
#define SZ_RESBUF 8192
static int vot = 0; /* VOTable handle */
static int number = 0; /* number values? */
static int do_return = 0; /* return result? */
#ifdef USE_RESBUF
static char *resbuf; /* result buffer */
#endif
/* Task specific option declarations.
*/
int votpos (int argc, char **argv, size_t *len, void **result);
static Task self = { "votpos", votpos, 0, 0, 0 };
static char *opts = "hNno:r%:";
static struct option long_opts[] = {
{ "Number", 2, 0, 'N'}, /* task option */
{ "number", 2, 0, 'n'}, /* task option */
{ "output", 1, 0, 'o'}, /* task option */
{ "return", 2, 0, 'r'}, /* task option */
{ "help", 2, 0, 'h'}, /* required */
{ "test", 1, 0, '%'}, /* required */
{ NULL, 0, 0, 0 }
};
static void Usage (void);
static void Tests (char *input);
/**
* Application entry point.
*/
int
votpos (int argc, char **argv, size_t *reslen, void **result)
{
char **pargv, optval[SZ_FNAME], *iname = NULL, *oname = NULL, *ucd = NULL;
int res, tab, data, tdata, field, status = OK;
int i, ncols, nrows, pos = 0, ch, ra_col, dec_col;
int got_ra_col = 0, got_dec_col = 0;
FILE *fd = (FILE *) NULL;
/* Initialize.
*/
oname = NULL;
iname = NULL;
*reslen = 0;
*result = NULL;
/* Parse the argument list.
*/
pargv = vo_paramInit (argc, argv, opts, long_opts);
while ((ch = vo_paramNext (opts,long_opts,argc,pargv,optval,&pos)) != 0) {
if (ch > 0) {
switch (ch) {
case '%': Tests (optval); return (self.nfail);
case 'h': Usage (); return (OK);
case 'N': number=-1; break;
case 'n': number=+1; break;
case 'o': oname = strdup (optval); break;
case 'r': do_return=1; break;
default:
fprintf (stderr, "Invalid option '%s'\n", optval);
return (1);
}
} else if (ch == PARG_ERR) {
return (ERR);
} else {
iname = strdup (optval);
break;
}
}
/* Sanity checks
*/
if (iname == NULL) iname = strdup ("stdin");
if (oname == NULL) oname = strdup ("stdout");
if (strcmp (iname, "-") == 0) { free (iname), iname = strdup ("stdin"); }
if (strcmp (oname, "-") == 0) { free (oname), oname = strdup ("stdout"); }
/* Open the table. This also parses it.
*/
if ( (vot = vot_openVOTABLE (iname) ) <= 0) {
fprintf (stderr, "Error opening VOTable '%s'\n", iname);
return (1);
}
res = vot_getRESOURCE (vot); /* get handles */
if (vot_getLength (res) > 1) {
fprintf (stderr, "Error: multiple RESOURCE elements not supported\n");
goto clean_up_;
}
tab = vot_getTABLE (res);
if ((data = vot_getDATA (tab))) {
tdata = vot_getTABLEDATA (data);
nrows = vot_getNRows (tdata);
ncols = vot_getNCols (tdata);
} else
goto clean_up_;
/* Find the columns.
*/
for (i=0, field=vot_getFIELD(tab); field; field=vot_getNext (field),i++) {
if ((ucd = vot_getAttr (field, "ucd"))) {
if ((strcmp (ucd, "POS_EQ_RA_MAIN") == 0) || /* UCD 1 */
(strcmp (ucd, "pos.eq.ra;meta.main") == 0)) { /* UCD 1+ */
ra_col = i;
got_ra_col = 1;
}
if ((strcmp (ucd, "POS_EQ_DEC_MAIN") == 0) || /* UCD 1 */
(strcmp (ucd, "pos.eq.dec;meta.main") == 0)) { /* UCD 1+ */
dec_col = i;
got_dec_col = 1;
}
}
}
if (!got_ra_col || !got_dec_col) {
fprintf (stderr, "Error: Cannot find position columns in table.\n");
status = ERR;
goto clean_up_;
}
/* Print the position cells.
*/
fd = stdout;
if (strncasecmp ("stdout", oname, 6)) {
if ((fd = fopen (oname, "w+")) == NULL) {
fprintf (stderr, "Error: Cannot open output file '%s'\n", oname);
return (ERR);
}
}
for (i=0; i < nrows; i++) {
char *ra, *dec, *s;
s = vot_getTableCell (tdata, i, ra_col); ra = (s ? s : "INDEF");
s = vot_getTableCell (tdata, i, dec_col); dec = (s ? s : "INDEF");
if (number > 0)
fprintf (fd, "%d ", i);
fprintf (fd, "%s %s", ra, dec);
if (number < 0)
fprintf (fd, " %d", i);
fprintf (fd, "\n");
}
/* Clean up.
*/
clean_up_:
if (fd != stdout)
fclose (fd);
if (iname) free (iname);
if (oname) free (oname);
vo_paramFree (argc, pargv);
vot_closeVOTABLE (vot); /* close the table */
return (status);
}
/**
* USAGE -- Print task help summary.
*/
static void
Usage (void)
{
fprintf (stderr, "\n Usage:\n\t"
"votpos [<opts>] votable.xml\n\n"
" where\n"
" -%%,--test run unit tests\n"
" -h,--help this message\n"
" -n,--number number output\n"
" -o,--output=<file> output file\n"
" -r,--return return result from method\n"
"\n"
" Examples:\n\n"
" 1) Print the primary (RA,Dec) columns from a table:\n\n"
" %% votpos test.xml\t\t\t# un-numbered\n"
" %% votpos -n test.xml\t\t# numbered\n"
" %% cat test.xml | votpos\t\t# un-numbered\n"
"\n"
" 2) Print the primary (RA,Dec) columns to a file:\n\n"
" %% votpos -o pos.txt test.xml\n"
"\n"
);
}
/**
* Tests -- Task unit tests.
*/
static void
Tests (char *input)
{
Task *task = &self;
vo_taskTest (task, "--help", NULL);
vo_taskTest (task, input, NULL);
vo_taskTest (task, "-n", input, NULL);
vo_taskTest (task, "-o", "-", input, NULL);
vo_taskTest (task, "-o", "pos.txt", input, NULL);
if (access ("pos.txt", F_OK) == 0) unlink ("pos.txt");
vo_taskTestReport (self);
}
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