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XEphem/GUI/xephem/skyfits.c

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/* code to open local or fetch FITS files for skyview from STScI or ESO.
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <ctype.h>
#include <math.h>
#include <fcntl.h>
#include <time.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <Xm/Xm.h>
#include <Xm/Form.h>
#include <Xm/Frame.h>
#include <Xm/Label.h>
#include <Xm/PushB.h>
#include <Xm/DrawingA.h>
#include <Xm/RowColumn.h>
#include <Xm/ToggleB.h>
#include <Xm/TextF.h>
#include <Xm/Scale.h>
#include <Xm/FileSB.h>
#include <Xm/MessageB.h>
#include <Xm/PanedW.h>
#include <Xm/Text.h>
#include "xephem.h"
#define MAXDSSFOV (30.) /* max field size we retreive, arcmins*/
#define MINDSSFOV (5.) /* min field size we retreive, arcmins*/
static int sf_readFile (char *name);
static void sf_create (void);
static void initFSB (Widget w);
static void initPubShared (Widget rc_w, Widget fsb_w);
static void sf_save_cb (Widget w, XtPointer client, XtPointer call);
static void save_file (void);
static void sf_open_cb (Widget w, XtPointer client, XtPointer call);
static void sf_close_cb (Widget w, XtPointer client, XtPointer call);
static void sf_help_cb (Widget w, XtPointer client, XtPointer call);
static void sf_setdate_cb (Widget w, XtPointer client, XtPointer call);
static void sf_setSaveName (char *newfn);
static char *bname (char *buf);
static void eso_fits (void);
static void stsci_fits (void);
static void fits_read_icb (XtPointer client, int *fd, XtInputId *id);
static int fitsObs (double *mjdp);
static void sf_setObsDate (void);
static int prepOpen (char fn[], char errmsg[]);
static XtInputId read_iid; /* set while working on reading from socket */
static XtIntervalId read_to; /* callback to poll for read cancel */
static void fits_read_to (XtPointer client, XtIntervalId *id);
static void fits_read_abort (FImage *fip);
static int fr_socket; /* FITS reading socket */
static XE_SSL_FD fr_ssl_fd; /* FITS reading ssl descriptor */
static Widget sf_w; /* main dialog */
static Widget savefn_w; /* TF for save filename */
static Widget stsci_w; /* TB for STScI, else ESO */
static Widget fsb_w; /* FSB for opening a file */
static Widget hdr_w; /* ScrolledText for the FITS header */
static Widget autoname_w; /* TB for whether to auto set save filename */
static Widget obsdate_w; /* label for obs date string */
static Widget setobsdate_w; /* PB to set main to obs date */
static Widget dss1_w; /* TB set to use DSS 1 */
static Widget dss2r_w; /* TB set to use DSS 2 red */
static Widget dss2b_w; /* TB set to use DSS 2 blue */
#define FWDT 1234 /* FITS file poll interval, ms */
static int fw_isFifo (char *name);
static void fw_to (XtPointer client, XtIntervalId *id);
static void fw_icb (XtPointer client, int *fd, XtInputId *id);
static void fw_cb (Widget w, XtPointer client, XtPointer call);
static void fw_on (int whether);
static XtIntervalId fw_tid; /* used to poll for file naming FITS file */
static XtInputId fw_iid; /* used to monitor FIFO for name of FITS file */
static Widget fwfn_w; /* TF holding Watch file name */
static Widget fw_w; /* TB whether to watch for FITS file */
static int fw_fd; /* file watch fifo id */
/* which survey */
typedef enum {
DSS_1, DSS_2R, DSS_2B
} Survey;
static Survey whichSurvey (void);
#define FCPP 500 /* FITS read cancel poll period, ms */
static char fitsp[] = "FITSpattern"; /* resource name of FITS file pattern */
#if defined (__NUTC__)
static char gexe[] = "gunzip.exe"; /* gunzip executable */
#else
static char gexe[] = "gunzip"; /* gunzip executable */
#endif
static char gcmd[] = "gunzip"; /* gunzip command's argv[0] */
static char skyfitscategory[] = "Sky View -- FITS"; /* Save category */
/* called to manage the fits dialog.
*/
void
sf_manage (void)
{
if (!sf_w) {
sf_create();
si_create();
}
XtManageChild(sf_w);
}
/* called to unmanage the fits dialog.
*/
void
sf_unmanage (void)
{
if (!sf_w)
return;
XtUnmanageChild (sf_w);
}
/* return 1 if dialog is up, else 0.
*/
int
sf_ismanaged (void)
{
return (sf_w && XtIsManaged(sf_w));
}
/* called to put up or remove the watch cursor. */
void
sf_cursor (Cursor c)
{
Window win;
if (sf_w && (win = XtWindow(sf_w)) != 0) {
Display *dsp = XtDisplay(sf_w);
if (c)
XDefineCursor (dsp, win, c);
else
XUndefineCursor (dsp, win);
}
}
/* install fip as the new current image with the given name.
* N.B. fip memory is made persistent, do not reset on return
* last argument determines whether contrast and WCS are set automatically.
*/
void
sf_newFITS (FImage *fip, char name[], int autocon)
{
/* install fip as current image */
si_newfim (fip, name, autocon);
/* set save name from image center, if enabled */
if (XmToggleButtonGetState(autoname_w))
sf_setSaveName (name);
/* set image date */
sf_setObsDate ();
}
/* fill the hdr_w scrolled text with the FITS header entries.
* keep hdrl up to date.
*/
void
sf_showHeader (fip)
FImage *fip;
{
char *header;
int i;
if (!sf_w) {
sf_create();
si_create();
}
/* room for each FITS line, with nl and a final END and \0 */
header = malloc ((fip->nvar+1)*(FITS_HCOLS+1) + 1);
if (!header) {
xe_msg (0, "No memory to display FITS header");
return;
}
/* copy from fip->var to header, adding \n after each line */
for (i = 0; i < fip->nvar; i++) {
memcpy(header + i*(FITS_HCOLS+1), fip->var[i], FITS_HCOLS);
header[(i+1)*(FITS_HCOLS+1)-1] = '\n';
}
/* add END and '\0' to make it a real string */
(void) sprintf (&header[i*(FITS_HCOLS+1)], "END");
XmTextSetString (hdr_w, header);
free (header);
/* scroll to the top */
XmTextShowPosition (hdr_w, (XmTextPosition)0);
}
/* return copies of the current filename and OBJECT or TARGET keywords.
* if either can not be determined, the returned string will be 0 length.
* N.B. we assume the caller supplies "enough" space.
*/
void
sf_getName (fn, on)
char *fn; /* filename */
char *on; /* object name */
{
FImage *fip;
char *savefn;
int i, n;
fip = si_getFImage ();
if (!fip) {
*fn = *on = '\0';
return;
}
savefn = XmTextFieldGetString (savefn_w);
n = strlen (savefn);
for (i = n-1; i >= 0 && savefn[i] != '/' && savefn[i] != '\\'; --i)
continue;
strcpy (fn, &savefn[i+1]);
XtFree (savefn);
if (getStringFITS (fip, "OBJECT", on) < 0 &&
getStringFITS (fip, "TARGET", on) < 0)
*on = '\0';
}
/* t00fri: include possibility to read .fth compressed files */
static int
prepOpen (fn, errmsg)
char fn[];
char errmsg[];
{
int fd;
int l;
l = strlen (fn);
if (l < 4 || strcmp(fn+l-4, ".fth")) {
/* just open directly */
fd = openh (fn, O_RDONLY);
if (fd < 0)
strcpy (errmsg, syserrstr());
} else {
/* ends with .fth so need to run through fdecompress
* TODO: this is a really lazy way to do it --
*/
char cmd[2048];
char tmp[2048];
int s;
tempfilename (tmp, "xefts", ".fth");
sprintf (cmd, "cp %s %s; fdecompress -r %s", fn, tmp, tmp);
s = system (cmd);
if (s != 0) {
sprintf (errmsg, "Can not execute `%s' ", cmd);
if (s < 0)
strcat (errmsg, syserrstr());
fd = -1;
} else {
tmp[strlen(tmp)-1] = 's';
fd = openh (tmp, O_RDONLY);
(void) unlink (tmp); /* once open, remove the .fts copy */
if (fd < 0)
sprintf (errmsg, "Can not decompress %s: %s", tmp,
syserrstr());
}
}
return (fd);
}
/* open and read a FITS file.
* if all ok return 0, else return -1.
*/
static int
sf_readFile (name)
char *name;
{
char buf[1024];
FImage fim, *fip = &fim;
char errmsg[1024];
int fd;
int s;
/* open the fits file */
fd = prepOpen (name, errmsg);
if (fd < 0) {
xe_msg (1, "%s: %s", name, errmsg);
return(-1);
}
/* read in */
s = readFITS (fd, fip, buf);
close (fd);
if (s < 0) {
xe_msg (1, "%s: %s", name, buf);
return(-1);
}
/* ok!*/
sf_newFITS (fip, name, 1);
return (0);
}
/* create, but do not manage, the FITS file dialog */
static void
sf_create (void)
{
Widget tf_w, bf_w;
Widget rc_w, rb_w;
Widget go_w;
Widget pw_w;
Widget h_w;
Widget w;
Arg args[20];
int n;
/* create form */
n = 0;
XtSetArg (args[n], XmNautoUnmanage, False); n++;
XtSetArg (args[n], XmNallowResize, True); n++;
XtSetArg (args[n], XmNverticalSpacing, 5); n++;
XtSetArg (args[n], XmNmarginWidth, 5); n++;
XtSetArg (args[n], XmNcolormap, xe_cm); n++;
XtSetArg (args[n], XmNdefaultPosition, False); n++;
sf_w = XmCreateFormDialog (svshell_w, "SkyFITS", args, n);
set_something (sf_w, XmNcolormap, (XtArgVal)xe_cm);
XtAddCallback (sf_w, XmNhelpCallback, sf_help_cb, NULL);
sr_reg (XtParent(sf_w), "XEphem*SkyFITS.x", skyfitscategory, 0);
sr_reg (XtParent(sf_w), "XEphem*SkyFITS.y", skyfitscategory, 0);
/* set some stuff in the parent DialogShell.
* setting XmNdialogTitle in the Form didn't work..
*/
n = 0;
XtSetArg (args[n], XmNtitle, "xephem Sky FITS"); n++;
XtSetValues (XtParent(sf_w), args, n);
/* top and bottom halves are in their own forms, then
* each form is in a paned window
*/
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
pw_w = XmCreatePanedWindow (sf_w, "FITSPW", args, n);
XtManageChild (pw_w);
/* the top form */
n = 0;
tf_w = XmCreateForm (pw_w, "TF", args, n);
XtManageChild (tf_w);
/* controls to fetch networked images */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNtopOffset, 6); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNalignment, XmALIGNMENT_BEGINNING); n++;
go_w = XmCreatePushButton (tf_w, "Get", args, n);
wtip (go_w, "Retrieve image of Sky View center over Internet");
XtAddCallback (go_w, XmNactivateCallback, sf_go_cb, NULL);
XtManageChild (go_w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNtopOffset, 8); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNleftWidget, go_w); n++;
XtSetArg (args[n], XmNleftOffset, 4); n++;
XtSetArg (args[n], XmNalignment, XmALIGNMENT_BEGINNING); n++;
w = XmCreateLabel (tf_w, "GL", args, n);
set_xmstring (w,XmNlabelString,"Digitized Sky Survey image:");
XtManageChild (w);
/* institution selection */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, go_w); n++;
XtSetArg (args[n], XmNtopOffset, 3); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 3); n++;
w = XmCreateLabel (tf_w, "From:", args, n);
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, go_w); n++;
XtSetArg (args[n], XmNtopOffset, 1); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 25); n++;
XtSetArg (args[n], XmNmarginHeight, 0); n++;
XtSetArg (args[n], XmNpacking, XmPACK_TIGHT); n++;
XtSetArg (args[n], XmNspacing, 6); n++;
XtSetArg (args[n], XmNorientation, XmHORIZONTAL); n++;
rb_w = XmCreateRadioBox (tf_w, "GRB", args, n);
XtManageChild (rb_w);
n = 0;
XtSetArg (args[n], XmNspacing, 4); n++;
stsci_w = XmCreateToggleButton (rb_w, "STScI", args, n);
wtip (stsci_w, "Get image from Maryland USA");
XtManageChild (stsci_w);
sr_reg (stsci_w, NULL, skyfitscategory, 1);
/* stsci sets logic */
n = 0;
XtSetArg (args[n], XmNspacing, 4); n++;
XtSetArg(args[n],XmNset,!XmToggleButtonGetState(stsci_w)); n++;
w = XmCreateToggleButton (rb_w, "ESO", args, n);
wtip (stsci_w, "Get image from Germany");
XtManageChild (w);
/* survey selection */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rb_w); n++;
XtSetArg (args[n], XmNtopOffset, 1); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 3); n++;
w = XmCreateLabel (tf_w, "Survey:", args, n);
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rb_w); n++;
XtSetArg (args[n], XmNtopOffset, 0); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 25); n++;
XtSetArg (args[n], XmNmarginHeight, 0); n++;
XtSetArg (args[n], XmNpacking, XmPACK_TIGHT); n++;
XtSetArg (args[n], XmNspacing, 6); n++;
XtSetArg (args[n], XmNorientation, XmHORIZONTAL); n++;
rb_w = XmCreateRadioBox (tf_w, "GRB", args, n);
XtManageChild (rb_w);
n = 0;
XtSetArg (args[n], XmNspacing, 4); n++;
dss1_w = XmCreateToggleButton (rb_w, "DSS1", args, n);
set_xmstring (dss1_w, XmNlabelString, "DSS 1");
wtip (dss1_w, "Original DSS");
XtManageChild (dss1_w);
sr_reg (dss1_w, NULL, skyfitscategory, 1);
n = 0;
XtSetArg (args[n], XmNspacing, 4); n++;
dss2r_w = XmCreateToggleButton (rb_w, "DSS2R", args, n);
set_xmstring (dss2r_w, XmNlabelString, "DSS 2R");
wtip (dss2r_w, "DSS 2, Red band (90% complete)");
XtManageChild (dss2r_w);
sr_reg (dss2r_w, NULL, skyfitscategory, 1);
n = 0;
XtSetArg (args[n], XmNspacing, 4); n++;
dss2b_w = XmCreateToggleButton (rb_w, "DSS2B", args, n);
set_xmstring (dss2b_w, XmNlabelString, "DSS 2B");
wtip (dss2b_w, "DSS 2, Blue band (50% complete)");
XtManageChild (dss2b_w);
sr_reg (dss2b_w, NULL, skyfitscategory, 1);
/* header, with possible date */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rb_w); n++;
XtSetArg (args[n], XmNtopOffset, 10); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNalignment, XmALIGNMENT_BEGINNING); n++;
h_w = XmCreateLabel (tf_w, "Lab", args, n);
set_xmstring (h_w, XmNlabelString, "FITS Header:");
XtManageChild (h_w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rb_w); n++;
XtSetArg (args[n], XmNtopOffset, 10); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
setobsdate_w = XmCreatePushButton (tf_w, "SO", args, n);
set_xmstring (setobsdate_w, XmNlabelString, "Set time");
XtAddCallback (setobsdate_w, XmNactivateCallback, sf_setdate_cb, 0);
wtip(setobsdate_w,"Set main XEphem time to this Observation time");
XtManageChild (setobsdate_w);
XtSetSensitive (setobsdate_w, False); /* set true when have date */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rb_w); n++;
XtSetArg (args[n], XmNtopOffset, 10); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNleftWidget, h_w); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNrightWidget, setobsdate_w); n++;
XtSetArg (args[n], XmNalignment, XmALIGNMENT_CENTER); n++;
obsdate_w = XmCreateLabel (tf_w, "ObsDate", args, n);
set_xmstring (obsdate_w, XmNlabelString, " ");
wtip(obsdate_w, "Best-guess of time of Observation");
XtManageChild (obsdate_w);
/* scrolled text in which to display the header */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, setobsdate_w); n++;
XtSetArg (args[n], XmNtopOffset, 2); n++;
XtSetArg (args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNbottomOffset, 10); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNautoShowCursorPosition, False); n++;
XtSetArg (args[n], XmNeditMode, XmMULTI_LINE_EDIT); n++;
XtSetArg (args[n], XmNeditable, False); n++;
XtSetArg (args[n], XmNcursorPositionVisible, False); n++;
hdr_w = XmCreateScrolledText (tf_w, "Header", args, n);
wtip (hdr_w, "Scrolled text area containing FITS File header");
XtManageChild (hdr_w);
/* the bottom form */
n = 0;
bf_w = XmCreateForm (pw_w, "BF", args, n);
XtManageChild (bf_w);
/* auto listen */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNtopOffset, 16); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
w = XmCreateLabel (bf_w, "FFWL", args, n);
set_xmstring (w, XmNlabelString, "File watch:");
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNtopOffset, 15); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 45); n++;
fw_w = XmCreateToggleButton (bf_w, "Watch", args, n);
/* N.B. don't sr_reg because that can trigger before SV ever up */
XtAddCallback (fw_w, XmNvalueChangedCallback, fw_cb, NULL);
wtip (fw_w,
"Whether to watch this file for name of FITS file to load");
XtManageChild (fw_w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, fw_w); n++;
XtSetArg (args[n], XmNtopOffset, 2); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
fwfn_w = XmCreateTextField (bf_w, "WatchFile", args, n);
defaultTextFN (fwfn_w, 0, getPrivateDir(), "watch.txt");
sr_reg (fwfn_w, NULL, skyfitscategory, 1);
wtip (fwfn_w,"Name of file to watch for name of FITS file to load");
XtManageChild (fwfn_w);
/* label, go PB, Auto name TB and TF for saving a file */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, fwfn_w); n++;
XtSetArg (args[n], XmNtopOffset, 16); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
w = XmCreateLabel (bf_w, "Save", args, n);
set_xmstring (w, XmNlabelString, "Save as:");
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, fwfn_w); n++;
XtSetArg (args[n], XmNtopOffset, 15); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_POSITION); n++;
XtSetArg (args[n], XmNleftPosition, 45); n++;
w = XmCreatePushButton (bf_w, "Save", args, n);
set_xmstring (w, XmNlabelString, "Save now");
XtAddCallback (w, XmNactivateCallback, sf_save_cb, NULL);
wtip (w, "Save the current image to the file named below");
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, fwfn_w); n++;
XtSetArg (args[n], XmNtopOffset, 15); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
autoname_w = XmCreateToggleButton (bf_w, "AutoName", args, n);
set_xmstring (autoname_w, XmNlabelString, "Auto name");
XtManageChild (autoname_w);
wtip (autoname_w, "When on, automatically chooses a filename based on RA and Dec");
sr_reg (autoname_w, NULL, skyfitscategory, 1);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, autoname_w); n++;
XtSetArg (args[n], XmNtopOffset, 2); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
savefn_w = XmCreateTextField (bf_w, "SaveFN", args, n);
defaultTextFN (savefn_w, 0, getPrivateDir(), "xxx.fts");
XtAddCallback (savefn_w, XmNactivateCallback, sf_save_cb, NULL);
wtip (savefn_w, "Enter name of file to write, then press Enter");
XtManageChild (savefn_w);
/* the Open FSB */
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, savefn_w); n++;
XtSetArg (args[n], XmNtopOffset, 16); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNalignment, XmALIGNMENT_BEGINNING); n++;
w = XmCreateLabel (bf_w, "Lab", args, n);
set_xmstring (w, XmNlabelString, "Open:");
XtManageChild (w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, savefn_w); n++;
XtSetArg (args[n], XmNtopOffset, 14); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNorientation, XmHORIZONTAL); n++;
XtSetArg (args[n], XmNspacing, 5); n++;
rc_w = XmCreateRowColumn (bf_w, "USRB", args, n);
XtManageChild (rc_w);
n = 0;
XtSetArg (args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
XtSetArg (args[n], XmNtopWidget, rc_w); n++;
XtSetArg (args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg (args[n], XmNrightAttachment, XmATTACH_FORM); n++;
/* t00fri: keeps FILE scrolled list width correct */
XtSetArg (args[n], XmNresizePolicy, XmRESIZE_NONE); n++;
fsb_w = XmCreateFileSelectionBox (bf_w, "FSB", args, n);
XtManageChild (fsb_w);
initFSB(fsb_w);
initPubShared (rc_w, fsb_w);
}
/* init the directory and pattern resources of the given FileSelectionBox.
* we try to pull these from the basic program resources.
*/
static void
initFSB (fsb_w)
Widget fsb_w;
{
Widget w;
/* set default dir and pattern */
set_xmstring (fsb_w, XmNdirectory, getPrivateDir());
set_xmstring (fsb_w, XmNpattern, getXRes (fitsp, "*.f*t*"));
/* change some button labels.
* N.B. can't add tips because these are really Gadgets.
*/
w = XmFileSelectionBoxGetChild (fsb_w, XmDIALOG_OK_BUTTON);
set_xmstring (w, XmNlabelString, "Open");
w = XmFileSelectionBoxGetChild (fsb_w, XmDIALOG_CANCEL_BUTTON);
set_xmstring (w, XmNlabelString, "Close");
/* some other tips */
w = XmFileSelectionBoxGetChild (fsb_w, XmDIALOG_FILTER_TEXT);
wtip (w, "Current directory and pattern; press `Filter' to rescan");
w = XmFileSelectionBoxGetChild (fsb_w, XmDIALOG_TEXT);
wtip (w, "FITS file name to be read if press `Open'");
/* connect an Open handler */
XtAddCallback (fsb_w, XmNokCallback, sf_open_cb, NULL);
/* connect a Close handler */
XtAddCallback (fsb_w, XmNcancelCallback, sf_close_cb, NULL);
/* connect a Help handler */
XtAddCallback (fsb_w, XmNhelpCallback, sf_help_cb, NULL);
}
/* callback from the Public dir PB */
/* ARGSUSED */
static void
sharedDirCB (Widget w, XtPointer client, XtPointer call)
{
Widget fsb_w = (Widget)client;
char buf[1024];
(void) sprintf (buf, "%s/fits", getShareDir());
set_xmstring (fsb_w, XmNdirectory, expand_home(buf));
}
/* callback from the Private dir PB */
/* ARGSUSED */
static void
privateDirCB (Widget w, XtPointer client, XtPointer call)
{
Widget fsb_w = (Widget)client;
set_xmstring (fsb_w, XmNdirectory, getPrivateDir());
}
/* build a set of PB in RC rc_w so that they
* set the XmNdirectory resource in the FSB fsb_w and invoke the Filter.
*/
static void
initPubShared (rc_w, fsb_w)
Widget rc_w, fsb_w;
{
Arg args[20];
char tip[1024];
Widget w;
int n;
n = 0;
w = XmCreateLabel (rc_w, "Dir", args, n);
set_xmstring (w, XmNlabelString, "Look in:");
XtManageChild (w);
n = 0;
w = XmCreatePushButton (rc_w, "Private", args, n);
XtAddCallback(w, XmNactivateCallback, privateDirCB, (XtPointer)fsb_w);
sprintf (tip, "Set directory to %s", getPrivateDir());
wtip (w, XtNewString(tip));
XtManageChild (w);
n = 0;
w = XmCreatePushButton (rc_w, "Shared", args, n);
XtAddCallback(w, XmNactivateCallback, sharedDirCB, (XtPointer)fsb_w);
sprintf (tip, "Set directory to %s/fits", getShareDir());
wtip (w, XtNewString(tip));
XtManageChild (w);
}
/* called when Watch TB changes */
/* ARGSUSED */
static void
fw_cb (Widget w, XtPointer client, XtPointer call)
{
fw_on (XmToggleButtonGetState(w));
}
/* called when Get PB or toolbar PB is hit */
/* ARGSUSED */
void
sf_go_cb (Widget w, XtPointer client, XtPointer call)
{
if (!sf_w) {
sf_create();
si_create();
}
if (read_iid) {
xe_msg (1, "DSS download is already in progress.");
return;
}
if (XmToggleButtonGetState(stsci_w))
stsci_fits();
else
eso_fits();
}
/* called when CR is hit in the Save text field or the Save PB is hit */
/* ARGSUSED */
static void
sf_save_cb (Widget w, XtPointer client, XtPointer call)
{
char *fn;
if (!si_getFImage ()) {
xe_msg (1, "No current FITS file to save");
return;
}
fn = XmTextFieldGetString (savefn_w);
if (!fn || (int)strlen(fn) < 1) {
xe_msg (1, "Please specify a filename");
XtFree (fn);
return;
}
if (existsh (fn) == 0 && confirm()) {
char buf[1024];
(void) sprintf (buf, "%s exists:\nOk to overwrite?", bname(fn));
query (sf_w, buf, "Yes -- Overwrite", "No -- Cancel",
NULL, save_file, NULL, NULL);
} else
save_file();
XtFree (fn);
}
/* save to file named in savefn_w.
* we already know everything is ok to just do it now.
*/
static void
save_file (void)
{
FImage *fip;
char buf[1024];
char *fn;
int fd;
fn = XmTextFieldGetString (savefn_w);
fd = openh (fn, O_CREAT|O_WRONLY, 0666);
if (fd < 0) {
xe_msg (1, "%s: %s", fn, syserrstr());
XtFree (fn);
return;
}
fip = si_getFImage ();
if (!fip) {
printf ("FImage disappeared in save_file\n");
abort();
}
si_setContrast(fip);
if (writeFITS (fd, fip, buf, 1) < 0) {
xe_msg (1, "%s: %s", fn, buf);
} else {
xe_msg (confirm(), "%s:\nwritten successfully", fn);
}
(void) close (fd);
XtFree (fn);
}
/* called when a file selected by the FSB is to be opened */
static void
/* ARGSUSED */
sf_open_cb (Widget w, XtPointer client, XtPointer call)
{
XmFileSelectionBoxCallbackStruct *s =
(XmFileSelectionBoxCallbackStruct *)call;
char *sp;
if (s->reason != XmCR_OK) {
printf ("%s: Unknown reason = 0x%x\n", "sf_open_cb()", s->reason);
abort();
}
watch_cursor(1);
XmStringGetLtoR (s->value, XmSTRING_DEFAULT_CHARSET, &sp);
sf_readFile (sp);
XtFree (sp);
watch_cursor(0);
}
/* ARGSUSED */
static void
sf_close_cb (Widget w, XtPointer client, XtPointer call)
{
XtUnmanageChild (sf_w);
}
/* ARGSUSED */
static void
sf_help_cb (Widget w, XtPointer client, XtPointer call)
{
static char *msg[] = {
"Read in local FITS files or read from Network.",
"Resulting image will be displayed in Sky View."
};
hlp_dialog ("Sky FITS", msg, sizeof(msg)/sizeof(msg[0]));
}
/* callback to set main time to match FITS */
/* ARGSUSED */
static void
sf_setdate_cb (Widget w, XtPointer client, XtPointer call)
{
double newmjd;
if (fitsObs(&newmjd) == 0)
mm_newcaldate(newmjd);
}
/* set savefn_w to newfn.
* preserve any existing directory.
*/
static void
sf_setSaveName(newfn)
char *newfn;
{
char buf[1024];
char *fn;
fn = XmTextFieldGetString (savefn_w);
(void) sprintf (buf, "%.*s%s", (int)(bname(fn)-fn), fn, bname(newfn));
XtFree (fn);
XmTextFieldSetString (savefn_w, buf);
}
/* return pointer to basename portion of filename fn.
*/
static char *
bname (fn)
char *fn;
{
char *base;
if (!(base = strrchr(fn,'/')) && !(base = strrchr(fn,'\\')))
base = fn;
else
base++; /* skip the / */
return (base);
}
/* return 0 if find the string str in buf, else -1 */
static int
chk4str (str, buf)
char str[];
char buf[];
{
int l = strlen (str);
while (*buf != '\0')
if (strncmp (str, buf++, l) == 0)
return (0);
return (-1);
}
/* return 0 if have gunzip else -1 */
static int
chk_gunzip (void)
{
#define NOGZEXIT 88 /* any impossible gzip exit value */
static int know = 1; /* 0 or -1 when know for sure */
int wstatus;
sigset_t oss, nss;
int pid;
/* only really test once */
if (know <= 0)
return (know);
/* main program reaps children with a SIGCHLD handler to avoid
* zombies. we want to temporarily prevent that here so we can wait.
*/
sigemptyset (&nss);
sigaddset (&nss, SIGCHLD);
sigprocmask (SIG_BLOCK, &nss, &oss);
/* fork/exec and see how it exits */
pid = fork();
if (pid < 0)
return (know = -1);
if (pid == 0) {
/* new process: exec gunzip reading /dev/null else exit NOGZEXIT */
int nullfd = open ("/dev/null", O_RDWR);
if (nullfd < 0)
_exit(NOGZEXIT);
dup2 (nullfd, 0);
dup2 (nullfd, 1);
dup2 (nullfd, 2);
execlp (gexe, gcmd, NULL);
/* does not return if works */
_exit(NOGZEXIT);
}
/* parent waits for exit status */
know = (waitpid (pid, &wstatus, 0) == pid && WIFEXITED(wstatus)
&& WEXITSTATUS(wstatus) != NOGZEXIT) ? 0 : -1;
/* resume allowing SIGCHLD */
sigprocmask (SIG_SETMASK, &oss, NULL);
return (know);
}
/* return 1 if have/want to use gunzip, else 0 */
static int
use_gunzip (void)
{
if (chk_gunzip() < 0) {
xe_msg (1,"Can not find %s.\nProceeding without compression", gcmd);
return (0);
}
return (1);
}
/* setup the pipe between gunzip and xephem to decompress the data.
* return pid if ok, else -1.
*/
static int
setup_gunzip_pipe(int sockfd)
{
int gzfd[2]; /* file descriptors for gunzip pipe */
int pid;
int errfd;
/* make the pipe to gunzip */
if (pipe(gzfd) < 0) {
xe_msg (1, "Can not make pipe for gunzip");
return (-1);
}
/* fork/exec gunzip */
switch((pid = fork())) {
case 0: /* child: put gunzip between socket and us */
close (gzfd[0]); /* do not need read side of pipe */
dup2 (sockfd, 0); /* socket becomes gunzip's stdin */
close (sockfd); /* do not need after dup */
dup2 (gzfd[1], 1); /* write side of pipe becomes gunzip's stdout */
close (gzfd[1]); /* do not need after dup */
errfd = open ("/dev/null", O_RDWR);
if (errfd >= 0) {
dup2 (errfd, 2);/* dump gunzip's stderr */
close (errfd);
}
execlp (gexe, gcmd, "-c", NULL); /*should work, already checked*/
_exit(1); /* exit in case gunzip disappeared */
break; /* :) */
case -1: /* fork failed */
xe_msg (1, "Can not fork for gunzip");
return (-1);
default: /* parent */
break;
}
/* put gunzip between the socket and us */
close (gzfd[1]); /* do not need write side of pipe */
dup2 (gzfd[0], sockfd); /* read side of pipe masquarades as socket */
close (gzfd[0]); /* do not need after dup */
/* return gunzip's pid */
return (pid);
}
/* setup the pipe between ssl decryption and xephem to decrypt the data.
* return pid if ok, else -1.
*/
static int
setup_ssldecryption_pipe(int sockfd)
{
int ssldecryptfd[2]; /* file descriptors for ssl decryption pipe */
int pid;
unsigned char buf[2048];
int nr;
/* make the pipe to ssl decryption */
if (pipe(ssldecryptfd) < 0) {
xe_msg (1, "Can not make pipe for ssl decryption");
return (-1);
}
/* fork and start ssl decryption */
switch((pid = fork())) {
case 0: /* child: put ssl decryption between socket and us */
close (ssldecryptfd[0]); /* do not need read side of pipe */
while ((nr = SSL_read (fr_ssl_fd.ssl, buf, sizeof(buf))) > 0) {
write (ssldecryptfd[1], buf, nr);
}
close (ssldecryptfd[1]); /* close when ssl decryption finishes */
SSL_free (fr_ssl_fd.ssl);
close (fr_ssl_fd.fd);
_exit(EXIT_SUCCESS); /* exit when ssl decryption finishes */
break; /* :) */
case -1: /* fork failed */
xe_msg (1, "Can not fork for ssl decryption");
return (-1);
default: /* parent */
break;
}
/* put ssl decryption between the socket and us */
close (ssldecryptfd[1]); /* do not need write side of pipe */
dup2 (ssldecryptfd[0], sockfd); /* read side of pipe masquarades as socket */
close (ssldecryptfd[0]); /* do not need after dup */
/* return pid of ssl decryption */
return (pid);
}
static Survey
whichSurvey (void)
{
if (XmToggleButtonGetState(dss2r_w))
return (DSS_2R);
if (XmToggleButtonGetState(dss2b_w))
return (DSS_2B);
return (DSS_1);
}
/* start an input stream reading a FITS image from ESO */
static void
eso_fits (void)
{
static char host[] = "archive.eso.org";
static FImage fim, *fip = &fim;
double fov, alt, az, ra, dec;
char rastr[32], *rap, decstr[32], *decp;
char buf[2048], msg[1024];
char *survey;
int gzpid;
int aamode;
int sawfits;
int ssldecryptpid;
ssldecryptpid = 0;
memset(&fr_ssl_fd, 0, sizeof(fr_ssl_fd));
/* do not turn off watch until completely finished */
watch_cursor (1);
/* let user abort */
stopd_up();
/* init fip (not reset because we copy the malloc'd fields to fim) */
initFImage (fip);
/* find current skyview center and size, in degrees */
sv_getcenter (&aamode, &fov, &alt, &az, &ra, &dec);
fov = 60*raddeg(fov);
ra = radhr (ra);
dec = raddeg (dec);
if (fov > MAXDSSFOV)
fov = MAXDSSFOV;
if (fov < MINDSSFOV)
fov = MINDSSFOV;
/* get desired survey */
switch (whichSurvey()) {
default:
case DSS_1: survey = "DSS1"; break;
case DSS_2R: survey = "DSS2-red"; break;
case DSS_2B: survey = "DSS2-blue"; break;
}
/* format and send the request.
* N.B. ESO can't tolerate leading blanks in ra dec specs
*/
fs_sexa (rastr, ra, 2, 3600);
for (rap = rastr; *rap == ' '; rap++)
continue;
fs_sexa (decstr, dec, 3, 3600);
for (decp = decstr; *decp == ' '; decp++)
continue;
(void) sprintf (buf, "GET https://%s/dss/dss?ra=%s&dec=%s&equinox=J2000&Sky-Survey=%s&mime-type=%s&x=%.0f&y=%.0f HTTP/1.0\r\nUser-Agent: xephem/%s\r\n\r\n",
host, rap, decp, survey,
use_gunzip() ? "display/gz-fits" : "application/x-fits",
fov, fov, PATCHLEVEL);
xe_msg (0, "Command to %s:\n%s", host, buf);
fr_socket = httpsGET (host, buf, msg, &fr_ssl_fd);
if (fr_socket < 0) {
xe_msg (1, "https get: %s", msg);
stopd_down();
watch_cursor (0);
return;
}
/* switch on ssl decryption */
ssldecryptpid = setup_ssldecryption_pipe(fr_socket);
if (ssldecryptpid < 0) {
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
/* read back the header -- ends with a blank line */
sawfits = 0;
while (recvline (fr_socket, buf, sizeof(buf)) > 1) {
xe_msg (0, "Rcv: %s", buf);
if (chk4str ("application/x-fits", buf) == 0
|| chk4str ("image/x-fits", buf) == 0)
sawfits = 1;
}
/* if do not see a fits file, show what we do find */
if (!sawfits) {
xe_msg (0, " ");
xe_msg (1, "Message from server in File->System log");
xe_msg (0, "------------------");
while (recvline (fr_socket, buf, sizeof(buf)) > 0)
xe_msg (0, "Rcv: %s", buf);
xe_msg (0, "------------------");
xe_msg (0, "End of Message from server");
msg_manage();
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
/* possibly connect via gunzip -- weird if have gunzip but can't */
if (use_gunzip()) {
gzpid = setup_gunzip_pipe(fr_socket);
if (gzpid < 0) {
if (ssldecryptpid > 0)
kill (ssldecryptpid, SIGTERM);
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
} else
gzpid = -1;
/* read the FITS header portion */
if (readFITSHeader (fr_socket, fip, buf) < 0) {
watch_cursor (0);
xe_msg (1, "%s", buf);
resetFImage (fip);
close (fr_socket);
if (ssldecryptpid > 0)
kill (ssldecryptpid, SIGTERM);
if (gzpid > 0)
kill (gzpid, SIGTERM);
stopd_down();
return;
}
/* ok, start reading the pixels and give user a way to abort */
pm_up(); /* for your viewing pleasure */
read_iid = XtAppAddInput (xe_app, fr_socket, (XtPointer)XtInputReadMask,
fits_read_icb, (XtPointer)fip);
read_to = XtAppAddTimeOut (xe_app, FCPP, fits_read_to, (XtPointer)(fip));
}
/* start an input stream reading a FITS image from STScI */
static void
stsci_fits (void)
{
static char host[] = "archive.stsci.edu";
static FImage fim, *fip = &fim;
double fov, alt, az, ra, dec;
char buf[1024], msg[1024];
char *survey;
int gzpid;
int aamode;
int sawfits;
int ssldecryptpid;
ssldecryptpid = 0;
memset(&fr_ssl_fd, 0, sizeof(fr_ssl_fd));
/* do not turn off watch until completely finished */
watch_cursor (1);
/* let user abort */
stopd_up();
/* init fip (not reset because we copy the malloc'd fields to fim) */
initFImage (fip);
/* find current skyview center and size, in degrees */
sv_getcenter (&aamode, &fov, &alt, &az, &ra, &dec);
fov = 60*raddeg(fov);
ra = raddeg (ra);
dec = raddeg (dec);
if (fov > MAXDSSFOV)
fov = MAXDSSFOV;
if (fov < MINDSSFOV)
fov = MINDSSFOV;
/* get desired survey */
switch (whichSurvey()) {
default:
case DSS_1: survey = "1"; break;
case DSS_2R: survey = "2r"; break;
case DSS_2B: survey = "2b"; break;
}
/* format and send the request */
(void) sprintf(buf,"GET https://%s/cgi-bin/dss_search?ra=%.5f&dec=%.5f&equinox=J2000&v=%s&height=%.0f&width=%.0f&format=FITS&compression=%s&version=3 HTTP/1.0\r\nUser-Agent: xephem/%s\r\n\r\n",
host, ra, dec, survey, fov, fov,
use_gunzip() ? "gz" : "NONE",
PATCHLEVEL);
xe_msg (0, "Command to %s:\n%s", host, buf);
fr_socket = httpsGET (host, buf, msg, &fr_ssl_fd);
if (fr_socket < 0) {
xe_msg (1, "https get: %s", msg);
stopd_down();
watch_cursor (0);
return;
}
/* switch on ssl decryption */
ssldecryptpid = setup_ssldecryption_pipe(fr_socket);
if (ssldecryptpid < 0) {
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
/* read back the header -- ends with a blank line */
sawfits = 0;
while (recvline (fr_socket, buf, sizeof(buf)) > 1) {
xe_msg (0, "Rcv: %s", buf);
if (chk4str ("image/x-fits", buf) == 0)
sawfits = 1;
}
/* if do not see a fits file, show what we do find */
if (!sawfits) {
xe_msg (0, " ");
xe_msg (1, "Message from server in File -> System log");
xe_msg (0, "------------------");
while (recvline (fr_socket, buf, sizeof(buf)) > 0)
xe_msg (0, "%s", buf);
xe_msg (0, "------------------");
xe_msg (0, "End of Message from server");
msg_manage();
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
/* possibly connect via gunzip -- weird if have gunzip but can't */
if (use_gunzip()) {
gzpid = setup_gunzip_pipe(fr_socket);
if (gzpid < 0) {
if (ssldecryptpid > 0)
kill (ssldecryptpid, SIGTERM);
watch_cursor (0);
close (fr_socket);
stopd_down();
return;
}
} else
gzpid = -1;
/* read the FITS header portion */
if (readFITSHeader (fr_socket, fip, buf) < 0) {
watch_cursor (0);
xe_msg (1, "%s", buf);
resetFImage (fip);
close (fr_socket);
if (ssldecryptpid > 0)
kill (ssldecryptpid, SIGTERM);
if (gzpid > 0)
kill (gzpid, SIGTERM);
stopd_down();
return;
}
/* ok, start reading the pixels and give user a way to abort */
pm_up(); /* for your viewing pleasure */
read_iid = XtAppAddInput (xe_app, fr_socket, (XtPointer)XtInputReadMask,
fits_read_icb, (XtPointer)fip);
read_to = XtAppAddTimeOut (xe_app, FCPP, fits_read_to, (XtPointer)(fip));
}
/* called whenever there is more data available on the sockfd.
* client is *FImage being accumulated.
*/
static void
fits_read_icb (client, fd, id)
XtPointer client;
int *fd;
XtInputId *id;
{
FImage *fip = (FImage *)client;
int sockfd = *fd;
double ra, dec;
char buf[1024];
/* read another chunk */
if (readIncFITS (sockfd, fip, buf) < 0) {
xe_msg (1, "%s", buf);
fits_read_abort (fip);
return;
}
/* report progress */
pm_set (fip->nbytes * 100 / fip->totbytes);
XmUpdateDisplay (toplevel_w);
/* keep going if expecting more */
if (fip->nbytes < fip->totbytes)
return;
/* finished reading */
stopd_down();
pm_down();
close (sockfd);
XtRemoveInput (read_iid);
read_iid = (XtInputId)0;
XtRemoveTimeOut (read_to);
read_to = (XtIntervalId)0;
/* YES! */
/* give it a name */
if (xy2RADec (fip, fip->sw/2.0, fip->sh/2.0, &ra, &dec) < 0) {
/* no headers! use time I guess */
struct tm *tp;
time_t t0;
time (&t0);
tp = gmtime (&t0);
if (!tp)
localtime (&t0);
sprintf (buf, "%04d%02d%02dT%02d%02d%02d.fts",
tp->tm_year+1900, tp->tm_mon+1, tp->tm_mday, tp->tm_hour,
tp->tm_min, tp->tm_sec);
} else {
int dneg, rh, rm, dd, dm;
ra = radhr(ra);
dec = raddeg(dec);
if ((dneg = (dec < 0)))
dec = -dec;
rh = (int)floor(ra);
rm = (int)floor((ra - rh)*60.0 + 0.5);
if (rm == 60) {
if (++rh == 24)
rh = 0;
rm = 0;
}
dd = (int)floor(dec);
dm = (int)floor((dec - dd)*60.0 + 0.5);
if (dm == 60) {
dd++;
dm = 0;
}
(void) sprintf (buf, "%02d%02d%c%02d%02d.fts", rh, rm,
dneg ? '-' : '+', dd, dm);
}
/* commit and display */
sf_newFITS (fip, buf, 1); /* N.B. copies fip .. do not resetFImage */
watch_cursor (0);
}
/* called to poll cancelling FITS file download
* client is *FImage being accumulated.
*/
static void
fits_read_to (XtPointer client, XtIntervalId *id)
{
FImage *fip = (FImage *)client;
if (stopd_check() < 0) {
fits_read_abort (fip);
} else {
read_to = XtAppAddTimeOut (xe_app, FCPP, fits_read_to, (XtPointer)(fip));
}
}
static void
fits_read_abort (FImage *fip)
{
resetFImage (fip);
close (fr_socket);
XtRemoveInput (read_iid);
read_iid = (XtInputId)0;
XtRemoveTimeOut (read_to);
read_to = (XtIntervalId)0;
stopd_down();
pm_down();
watch_cursor (0);
}
/* poke around in the headers and try to find the mjd of the observation.
* return 0 if think we found something, else -1
*/
static int
fitsObs(mjdp)
double *mjdp;
{
FImage *fip = si_getFImage();
char buf[128];
double x;
if (!fip)
return (-1);
if (getRealFITS (fip, "JD", &x) == 0) {
*mjdp = x - MJD0;
return (0);
}
if (getRealFITS (fip, "EPOCH", &x) == 0) {
year_mjd (x, mjdp);
return (0);
}
if (getStringFITS (fip, "DATE-OBS", buf) == 0) {
/* try ISO 8601 then a few guesses */
int a, b, c, d, e, f;
if (sscanf (buf, "%d-%d-%dT%d:%d:%d", &a, &b, &c, &d, &e, &f) == 6){
double day = c + (d + ((e + f/60.0)/60.0))/24.0;
cal_mjd (b, day, a, mjdp);
return (0);
}
if (sscanf (buf, "%d%*[/-]%d%*[/-]%d", &a, &b, &c) == 3) {
if (a > 1900) {
/* yyyy-mm-dd? */
cal_mjd (b, (double)c, a, mjdp);
return (0);
} else if (a <= 12 && b <= 31 && c < 100) {
/* mm-dd-yy? */
c += (c < 50 ? 2000 : 1900);
cal_mjd (a, (double)b, c, mjdp);
return (0);
}
}
}
return (-1);
}
/* get and display the time of observation from the current FITS image */
static void
sf_setObsDate (void)
{
double objsmjd;
if (fitsObs(&objsmjd) == 0) {
int mm, yy, d, h, m, s;
double dd, dh, dm, ds;
char buf[128];
mjd_cal (objsmjd, &mm, &dd, &yy);
d = (int)dd;
dh = (dd - d)*24.;
h = (int)dh;
dm = (dh - h)*60.;
m = (int)dm;
ds = (dm - m)*60.;
if (ds > 59.5) {
s = 0;
if (++m == 60) {
m = 0;
h += 1; /* TODO: roll date if hits 24 */
}
} else
s = (int)ds;
sprintf (buf, "%d-%d-%d %02d:%02d:%02d", yy, mm, d, h, m, s);
set_xmstring (obsdate_w, XmNlabelString, buf);
XtSetSensitive (setobsdate_w, True);
} else {
set_xmstring (obsdate_w, XmNlabelString, " ");
XtSetSensitive (setobsdate_w, False);
}
}
/* turn on or off file watching.
*/
static void
fw_on (whether)
int whether;
{
/* turn everything off */
if (fw_tid) {
XtRemoveTimeOut (fw_tid);
fw_tid = 0;
}
if (fw_iid) {
close (fw_fd);
XtRemoveInput (fw_iid);
fw_iid = 0;
}
/* then maybe restart */
if (whether) {
char *txt, wfn[1024];
/* clean scrubbed file name to watch */
txt = XmTextFieldGetString (fwfn_w);
strcpy (wfn, expand_home(txt));
XtFree (txt);
/* start timer or input depending on whether fifo */
if (fw_isFifo(wfn)) {
fw_fd = open (wfn, O_RDWR);
if (fw_fd < 0) {
char msg[1024];
sprintf (msg, "%s: %s", wfn, syserrstr());
XmToggleButtonSetState (fw_w, False, False);
} else {
fw_iid = XtAppAddInput (xe_app, fw_fd,
(XtPointer)XtInputReadMask, fw_icb, NULL);
}
} else {
fw_tid = XtAppAddTimeOut (xe_app, 0, fw_to, 0);
}
}
}
/* called periodically to check whether file in fwfn_w names a FITS file
* to load. when it does, load the named file and delete the watch file
* as a simple form of ACK.
*/
static void
fw_to (client, id)
XtPointer client;
XtIntervalId *id;
{
char wfn[512], ffn[512];
char *txt, *nl;
int wfd, nr;
/* try to open watch file */
txt = XmTextFieldGetString (fwfn_w);
strcpy (wfn, expand_home(txt));
XtFree (txt);
wfd = open (wfn, O_RDONLY|O_NONBLOCK);
if (wfd < 0)
goto again;
/* read it to get name of FITS file */
nr = read (wfd, ffn, sizeof(ffn));
close (wfd);
if (nr <= 0)
goto again;
ffn[nr] = '\0';
nl = strchr (ffn, '\n');
if (nl)
*nl = '\0';
strcpy (ffn, expand_home(ffn));
/* display and remove */
sv_manage();
sf_readFile (ffn);
remove (wfn);
again:
fw_tid = XtAppAddTimeOut (xe_app, FWDT, fw_to, 0);
}
/* called whenever the FITS filename fifo might have something to read.
*/
static void
fw_icb (client, fdp, id)
XtPointer client;
int *fdp;
XtInputId *id;
{
char *nl, ffn[1024];
int nr;
nr = read (fw_fd, ffn, sizeof(ffn));
if (nr <= 0) {
if (nr < 0)
sprintf (ffn, "FITS Watch fifo: %s", syserrstr());
else
sprintf (ffn, "EOF from Watch fifo.");
strcat (ffn, "\nTurning FITS Watching off");
xe_msg (1, ffn);
XmToggleButtonSetState (fw_w, False, True); /* let it clean up */
}
ffn[nr] = '\0';
nl = strchr (ffn, '\n');
if (nl)
*nl = '\0';
strcpy (ffn, expand_home(ffn));
/* display */
sv_manage();
sf_readFile (ffn);
}
/* return whether fn claims to be a fifo */
static int
fw_isFifo (fn)
char *fn;
{
struct stat st;
return (!stat (fn, &st) && (st.st_mode & S_IFIFO));
}
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