DAMASK_EICMD/installation/setup_shellrc.py

#!/usr/bin/env python

import os,sys,string,re
from optparse import OptionParser

validShellRC = {\
               'bash':['.bashrc','.bash_profile','.bash_login','.profile','new'],
               'csh': ['.cshrc','new'],
              }

env_order = ['DAMASK_ROOT','DAMASK_BIN','PATH','PYTHONPATH','LD_LIBRARY_PATH']
environment = { 'DAMASK_ROOT':
                              [{'delete':'',
                                'substitute':'[DamaskRoot]',
                                'append': False,
                               },
                              ],
                'DAMASK_BIN':
                              [{'delete':'',
                                'substitute':'[os.path.join(DamaskRoot,"bin")]',
                                'append': False,
                               },
                              ],
                'PATH':
                              [{'delete':'"${DAMASK_BIN}"',
                                'substitute':'["${DAMASK_BIN}"]',
                                'append': True,
                               },
                              ],
                'PYTHONPATH':
                              [{'delete':'"${DAMASK_ROOT}/lib"',
                                'substitute':'["${DAMASK_ROOT}/lib"]',
                                'append': True,
                               },
                              ], 
                'LD_LIBRARY_PATH':
                              [{'activate':  'pathInfo["acml"]',
                                'delete':    '"acml"',                                             # what keywords trigger item deletion from existing path 
                                'substitute':'[os.path.join(pathInfo["acml"],"ifort64_mp/lib"),\
                                               os.path.join(pathInfo["acml"],"ifort64/lib"),\
                                               os.path.join(pathInfo["acml"],"gfortran64_mp/lib"),\
                                               os.path.join(pathInfo["acml"],"gfortran64/lib")]',  # what to substitute for deleted path items
                                'append': True,                                                    # whether new entries append to existing ${env}
                               },
                               {'activate':  'pathInfo["lapack"]',
                                'delete':    '[os.path.join(pathInfo["lapack"],"lib"),\
                                               os.path.join(pathInfo["lapack"],"lib64")]',         # deleted current (same) entry
                                'substitute':'[os.path.join(pathInfo["lapack"],"lib"),\
                                               os.path.join(pathInfo["lapack"],"lib64")]',         # what to substitute for deleted path
                                'append': True,                                                    # whether new entries append to existing ${env}
                               },
                               {'activate':  'pathInfo["fftw"]',
                                'delete':    '[os.path.join(pathInfo["fftw"],"lib")]',             # deleted current (same) entry
                                'substitute':'[os.path.join(pathInfo["fftw"],"lib")]',             # what to substitute for deleted path items
                                'append': True,                                                    # whether new entries append to existing ${env}
                               },
                              ],
               }

parser = OptionParser(usage="%prog [options]", description = """
Sets up your shell resource to be compatible with DAMASK. 
""" + string.replace('$Id$','\n','\\n')
)

parser.add_option("-s","--shell", type="string", 
                  dest = "shell", \
                  help = "type of shell, e.g. "+', '.join(validShellRC.keys())+" [%default]")

parser.set_defaults(shell = 'bash')

(options, args) = parser.parse_args()

pathInfo = {}
hitSomething = False

DamaskRoot = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])),'../'))
try:                                        # check for user-defined pathinfo
  file = open(os.path.join(DamaskRoot,'lib/pathinfo'))
  content = map(lambda string: string.strip(),file.readlines())
  file.close()
  for line in content:
    if not (line.startswith('#') or line == ''):
      items = line.split() + ['','']
      pathInfo[items[0].lower()] = {False: os.path.normpath(os.path.join(DamaskRoot,'lib/',items[1])),
                                    True: items[1]}[items[1] == '']
except:
  pass

theShell = options.shell.lower()
theHome = os.getenv('USERPROFILE') or os.getenv('HOME')

for theRC in validShellRC[theShell]:
  if theRC == 'new' and not hitSomething:
    theRC = validShellRC[theShell][0]
    print 'Could not find a file to store bash information, creating "%s" in home directory'%theRC
    open(os.path.join(theHome,theRC), 'w').close()
  thePath = os.path.join(theHome,theRC)
  if os.path.exists(thePath):
    print thePath
    hitSomething = True
    rc = open(os.path.join(theHome,theRC))
    content = map(string.strip,rc.readlines())
    rc.close()

    match = {}
    for var in env_order: match[var] = False
  
    output = []
      
    for line in content:
      for var in env_order:
        m = re.search(\
                      {\
                       'bash': r'^(.*? %s=)([^;]*)(.*)$'%var,
                       'csh':  r'^(\s*setenv\s+%s\s+)([^;]*)(.*)$'%var 
                      }[theShell],line)
        if m:
          n = re.search(r'(%s)'%var, line)
          o = re.search(r'(#)', line)
          if o:
            if o.start() < n.start():
              print 'skipped potential comment line, please check!'
              continue
          match[var] = True
          items = m.group(2).split(':')
          for piece in environment[var]:
            try:
              if 'activate' not in piece or eval(piece['activate']) != '':
                if piece['append']:
                  if 'delete' in piece:
                    killer = eval(piece['delete'])
                    if type(killer) == str:
                      items = [path for path in items if killer not in path]
                    if type(killer) == list:
                      items = [path for path in items if path not in killer]
                  items += eval(piece['substitute'])
                else:
                  items = eval(piece['substitute'])
            except:
              pass
          line = m.group(1)+':'.join(items)+m.group(3)

      output.append(line)

    for var in env_order:
      if not match[var]:
        items = ['${%s}'%var]
        for piece in environment[var]:
          try:
            if 'activate' not in piece or eval(piece['activate']) != '':
              if piece['append']:
                items += eval(piece['substitute'])
              else:
                items =  eval(piece['substitute'])
          except:
            pass
        output.append({\
           'bash':'export %s=%s'%(var,':'.join(items)),
           'csh': 'setenv %s %s'%(var,':'.join(items)),
          }[theShell])

    rc = open(os.path.join(theHome,theRC),'w')
    rc.write('\n'.join(output)+'\n')
    rc.close()


if not hitSomething: print 'none of %s found..!'%(', '.join(validShellRC[theShell]))