diff options
Diffstat (limited to 'astro')
| -rwxr-xr-x | astro/casa-script | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/astro/casa-script b/astro/casa-script deleted file mode 100755 index 615b7eb..0000000 --- a/astro/casa-script +++ /dev/null @@ -1,111 +0,0 @@ -#!/bin/sh -# -# usage: casa-script <script.py> [script arguments...] -# -# Credit: https://github.com/pkgw/pwpy - intfbin/casa-script -# License: GPLv3+ -# -# This tool makes it possible to run scripts in a full CASA environment from -# the command line in the sanest way I can muster (for my personal definition -# of "sane"). Expected usage is in a hashbang line in the script: -# -# #! /usr/bin/env casa-script -# # -*- python -*- -# ... -# -# The elements of sanity are: -# -# - casapy is invoked in a temporary directory, so that the logfile turds it -# likes to drop everywhere get cleaned up. -# - command-line arguments are made accessible to the script in a clean-ish -# way (last I checked, this didn't work with straight-up casapy) -# - output is redirected so that casapy's incessant chatter can be silenced -# - the GUI is disabled -# -# Unfortunately I am unable to do anything about casapy's terrible startup -# time. -# -# Inside the temporary directory, the invocation directory of this script is -# symlinked under the name 'data'. All file paths should begin with 'data/', -# with special care for command-line arguments, which will need post-processing. -# -# The command-line arguments to the invoked script are saved, separated by -# **NULs**, in a file in the temporary directory called 'args'. These can be -# retrieved with: -# -# argv = open ('args').read ().split ('\0')[2:-1] -# # or -# args = open ('args').read ().split ('\0')[3:-1] -# -# The output of casapy is redirected to files 'stdout' and 'stderr' in the -# temporary working directory. The standard output and error of this script -# are linked to FIFOs in the work directory named 'csout' and 'cserr'. -# Therefore, to selectively output data to the invoker, do -# -# csout, cserr = open ('csout', 'w', 1), open ('cserr', 'w', 1) -# ... -# print >>csout, 'info: this script works' -# ... -# print >>cserr, 'warning: your data are broken' -# -# Keep in mind that the script is being executed in CASA's IPython -# environment, so the environment is highly non-vanilla. Because IPython -# just prints exceptions to the screen, you need to wrap the entire program -# in a try/except block and handle them manually: -# -# # after setting up cserr -# try: -# ... entire program ... -# except SystemExit: -# pass -# except: -# import os, sys, traceback -# traceback.print_exception (*sys.exc_info (), file=cserr) -# os._exit (1) -# -# Note that we need to use os._exit() to be able to actually exit with an -# error return code. Do not use sys.exit() or (CASA's) exit(). - -# Set up a fully-qualified path name to the input script so that CASA can -# always find it, even when we hop around in subdirectories. Otherwise it -# tries to evaluate the filename as a line of Python. - -script=$(cd $(dirname $1) && pwd)/$(basename $1) -if [ ! -e "$script" ] ; then - echo >&2 "error: cannot find input script \"$1\"; should be at \"$script\"" - exit 1 -fi - -workdir=`mktemp -d casascript.XXXXXXXXX` -cd "$workdir" -ln -s .. data -cp /proc/$$/cmdline args -mkfifo csout cserr || exit 1 - -# Process group management insanity: -# http://stackoverflow.com/a/1645157/3760486 I'm sure I could do a -# better/cleaner job of this, but I'm pretty sure this code errs on the side -# of safety, and that's my priority. - -trap : SIGTERM SIGINT -cat csout & -killpids="-$!" -cat cserr >&2 & -killpids="$killpids -$!" -casapy --log2term --nogui -c "$script" </dev/null >stdout 2>stderr & -killpids="$killpids -$!" -wait $! -retval=$? - -if [ $retval -gt 128 ] ; then - kill -- $killpids -fi - -if [ $retval -ne 0 ] ; then - echo >&2 "error: casapy exited with error code $retval; preserving work directory $workdir" -else - cd .. - [ x"$CASASCRIPT_DEBUG_WORK" != x ] || rm -rf "$workdir" -fi - -exit $retval |