| 1 | """This module has various functions for environment specific setings.
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| 2 | """
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| 3 | __all__ = ["is_casapy", "is_ipython", "setup_env", "get_revision",
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| 4 | "is_asap_cli"]
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| 5 |
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| 6 | import sys
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| 7 | import os
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| 8 | import shutil
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| 9 | import platform
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| 10 |
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| 11 | def is_casapy():
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| 12 | """Are we running inside casapy?"""
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| 13 | try:
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| 14 | from taskinit import casalog
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| 15 | return True
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| 16 | except ImportError:
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| 17 | return False
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| 18 |
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| 19 | def is_ipython():
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| 20 | """Are we running inside IPython?"""
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| 21 | return 'IPython' in sys.modules.keys()
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| 22 |
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| 23 | def is_asap_cli():
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| 24 | """Are we running inside asap ipython (but not casapy)"""
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| 25 | return is_ipython() and not is_casapy()
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| 26 |
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| 27 | def setup_env():
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| 28 | """Set-up environment variables for casa and initialise ~/.asap on first
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| 29 | use.
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| 30 | """
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| 31 | # Set up CASAPATH and first time use of asap i.e. ~/.asap/*
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| 32 | plf = None
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| 33 | if sys.platform == "linux2":
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| 34 | if platform.architecture()[0] == '64bit':
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| 35 | plf = 'linux_64b'
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| 36 | else:
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| 37 | plf = 'linux_gnu'
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| 38 | elif sys.platform == 'darwin':
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| 39 | plf = 'darwin'
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| 40 | else:
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| 41 | # Shouldn't happen - default to linux
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| 42 | plf = 'linux'
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| 43 | asapdata = os.path.split(__file__)[0]
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| 44 |
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| 45 | # Allow user defined data location
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| 46 | if os.environ.has_key("ASAPDATA"):
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| 47 | if os.path.exists(os.environ["ASAPDATA"]):
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| 48 | asapdata = os.environ["ASAPDATA"]
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| 49 | # use CASAPATH if defined and "data" dir present
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| 50 | if not os.environ.has_key("CASAPATH") or \
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| 51 | not os.path.exists(os.environ["CASAPATH"].split()[0]+"/data"):
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| 52 | os.environ["CASAPATH"] = "%s %s somwhere" % ( asapdata, plf)
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| 53 |
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| 54 | def get_revision():
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| 55 | """Get the revision of the software. Only useful within casapy."""
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| 56 | if not is_casapy:
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| 57 | return ' unknown '
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| 58 | casapath=os.environ["CASAPATH"].split()
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| 59 | versioninfo = sys.version_info
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| 60 | pyversion = '%s.%s'%(versioninfo[0],versioninfo[1])
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| 61 | if os.path.isdir(casapath[0]+'/'+casapath[1]+'/python/%s/asap'%(pyversion)):
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| 62 | # for casa developer environment (linux or darwin)
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| 63 | revinfo=casapath[0]+'/'+casapath[1]+'/python/%s/asap/svninfo.txt'%(pyversion)
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| 64 | else:
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| 65 | # for end-user environments
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| 66 | if casapath[1]=='darwin':
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| 67 | revinfo=casapath[0]+'/Resources/python/asap/svninfo.txt'
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| 68 | else:
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| 69 | revinfo=casapath[0]+'/lib/python%s/asap/svninfo.txt'%(pyversion)
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| 70 | if os.path.isfile(revinfo):
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| 71 | f = file(revinfo)
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| 72 | f.readline()
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| 73 | revsionno=f.readline()
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| 74 | f.close()
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| 75 | return revsionno.rstrip()
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| 76 | return ' unknown '
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