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lit: Support '>>' redirections when executing scripts internally.

llvm-svn: 85014
This commit is contained in:
Daniel Dunbar 2009-10-24 20:32:49 +00:00
parent 59d81da39c
commit e66bb298d4

View File

@ -63,21 +63,30 @@ def executeShCmd(cmd, cfg, cwd, results):
# output. This is null until we have seen some output using
# stderr.
for i,j in enumerate(cmd.commands):
# Apply the redirections, we use (N,) as a sentinal to indicate stdin,
# stdout, stderr for N equal to 0, 1, or 2 respectively. Redirects to or
# from a file are represented with a list [file, mode, file-object]
# where file-object is initially None.
redirects = [(0,), (1,), (2,)]
for r in j.redirects:
if r[0] == ('>',2):
redirects[2] = [r[1], 'w', None]
elif r[0] == ('>>',2):
redirects[2] = [r[1], 'a', None]
elif r[0] == ('>&',2) and r[1] in '012':
redirects[2] = redirects[int(r[1])]
elif r[0] == ('>&',) or r[0] == ('&>',):
redirects[1] = redirects[2] = [r[1], 'w', None]
elif r[0] == ('>',):
redirects[1] = [r[1], 'w', None]
elif r[0] == ('>>',):
redirects[1] = [r[1], 'a', None]
elif r[0] == ('<',):
redirects[0] = [r[1], 'r', None]
else:
raise NotImplementedError,"Unsupported redirect: %r" % (r,)
# Map from the final redirections to something subprocess can handle.
final_redirects = []
for index,r in enumerate(redirects):
if r == (0,):