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https://github.com/Sneed-Group/Poodletooth-iLand
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98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
#----------------------------------------------------------------------
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# Name: magic.py
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# Author: David N. Mashburn <david.n.mashburn@gmail.com>
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# Created: 07/01/2009
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# Tags: phoenix-port
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#----------------------------------------------------------------------
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"""magic.py is a utility that allows a simple line from the interpreter
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be translated from a more bash-like form to a python form.
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For instance, 'plot a' is transformed to 'plot(a)'
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Special exceptions are made for predefined ls,cd, and pwd functions"""
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__author__ = "David N. Mashburn <david.n.mashburn@gmail.com>"
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# created 07/01/2009
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import keyword
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from .parse import testForContinuations
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aliasDict = {}
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#DNM
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# TODO : Still Refining this... seems to be ok for now... still finding gotchas, though!
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# TODO : Multi-line strings seem to be correctly broken into commands by PyCrust(PySlices)
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# TODO : Is there a better version of ls, cd, pwd, etc that could be used?
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def magicSingle(command):
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if command=='': # Pass if command is blank
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return command
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first_space=command.find(' ')
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if command[0]==' ': # Pass if command begins with a space
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pass
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elif command[0]=='?': # Do help if starts with ?
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command='help('+command[1:]+')'
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elif command[0]=='!': # Use os.system if starts with !
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command='sx("'+command[1:]+'")'
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elif command in ('ls','pwd'): # automatically use ls and pwd with no arguments
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command=command+'()'
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elif command[:3] in ('ls ','cd '): # when using the 'ls ' or 'cd ' constructs, fill in both parentheses and quotes
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command=command[:2]+'("'+command[3:]+'")'
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elif command[:6] == 'alias ':
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c = command[6:].lstrip().split(' ')
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if len(c)<2:
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#print('Not enough arguments for alias!')
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command = ''
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else:
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n,v = c[0],' '.join(c[1:])
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aliasDict[n]=v
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command = ''
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elif command.split(' ')[0] in aliasDict.keys():
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c = command.split(' ')
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if len(c)<2:
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command = 'sx("'+aliasDict[c[0]]+'")'
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else:
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command = 'sx("'+aliasDict[c[0]]+' '+' '.join(c[1:])+'")'
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elif first_space!=-1: # if there is at least one space, add parentheses at beginning and end
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cmds=command.split(' ')
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if len(cmds)>1:
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wd1=cmds[0]
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wd2=cmds[1]
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i=1
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while wd2=='':
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i+=1
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if len(cmds)==i:
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break
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wd2=cmds[i]
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if wd2=='':
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return command
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if (wd1[0].isalpha() or wd1[0]=='_') and (wd2[0].isalnum() or (wd2[0] in """."'_""")) and not keyword.iskeyword(wd1) and not keyword.iskeyword(wd2):
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if wd1.replace('.','').replace('_','').isalnum():
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command=wd1+'('+command[(first_space+1):]+')' # add parentheses where the first space was and at the end... hooray!
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return command
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def magic(command):
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continuations = testForContinuations(command)
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if len(continuations)==2: # Error case...
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return command
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elif len(continuations)==4:
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stringContinuationList,indentationBlockList, \
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lineContinuationList,parentheticalContinuationList = continuations
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commandList=[]
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firstLine = True
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for i in command.split('\n'):
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if firstLine:
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commandList.append(magicSingle(i))
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elif stringContinuationList.pop(0)==False and \
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indentationBlockList.pop(0)==False and \
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lineContinuationList.pop(0)==False and \
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parentheticalContinuationList.pop(0)==False:
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commandList.append(magicSingle(i)) # unless this is in a larger expression, use magic
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else:
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commandList.append(i)
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firstLine=False
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return '\n'.join(commandList)
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