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	Also, fix unit tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81194 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			86 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			86 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
class Command:
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    def __init__(self, args, redirects):
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        self.args = list(args)
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        self.redirects = list(redirects)
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    def __repr__(self):
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        return 'Command(%r, %r)' % (self.args, self.redirects)
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    def __cmp__(self, other):
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        if not isinstance(other, Command):
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            return -1
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        return cmp((self.args, self.redirects),
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                   (other.args, other.redirects))
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    def toShell(self, file):
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        for arg in self.args:
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            if "'" not in arg:
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                quoted = "'%s'" % arg
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            elif '"' not in arg and '$' not in arg:
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                quoted = '"%s"' % arg
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            else:
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                raise NotImplementedError,'Unable to quote %r' % arg
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            print >>file, quoted,
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            # For debugging / validation.
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            import ShUtil
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            dequoted = list(ShUtil.ShLexer(quoted).lex())
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            if dequoted != [arg]:
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                raise NotImplementedError,'Unable to quote %r' % arg
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        for r in self.redirects:
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            if len(r[0]) == 1:
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                print >>file, "%s '%s'" % (r[0][0], r[1]),
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            else:
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                print >>file, "%s%s '%s'" % (r[0][1], r[0][0], r[1]),
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class Pipeline:
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    def __init__(self, commands, negate=False, pipe_err=False):
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        self.commands = commands
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        self.negate = negate
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        self.pipe_err = pipe_err
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    def __repr__(self):
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        return 'Pipeline(%r, %r, %r)' % (self.commands, self.negate,
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                                         self.pipe_err)
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    def __cmp__(self, other):
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        if not isinstance(other, Pipeline):
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            return -1
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        return cmp((self.commands, self.negate, self.pipe_err),
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                   (other.commands, other.negate, self.pipe_err))
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    def toShell(self, file, pipefail=False):
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        if pipefail != self.pipe_err:
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            raise ValueError,'Inconsistent "pipefail" attribute!'
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        if self.negate:
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            print >>file, '!',
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        for cmd in self.commands:
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            cmd.toShell(file)
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            if cmd is not self.commands[-1]:
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                print >>file, '|\n ',
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class Seq:
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    def __init__(self, lhs, op, rhs):
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        assert op in (';', '&', '||', '&&')
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        self.op = op
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        self.lhs = lhs
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        self.rhs = rhs
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    def __repr__(self):
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        return 'Seq(%r, %r, %r)' % (self.lhs, self.op, self.rhs)
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    def __cmp__(self, other):
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        if not isinstance(other, Seq):
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            return -1
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        return cmp((self.lhs, self.op, self.rhs),
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                   (other.lhs, other.op, other.rhs))
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    def toShell(self, file, pipefail=False):
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        self.lhs.toShell(file, pipefail)
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        print >>file, ' %s\n' % self.op
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        self.rhs.toShell(file, pipefail)
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