occheung
/
artiq
forked from M-Labs/artiq
1
0
Fork 0
Code Pull Requests Activity

bit2bin: close input file explicitly

This commit is contained in:
Sebastien Bourdeauducq 2016-05-21 21:50:08 +08:00
parent 65c835e991
commit 852ddb7796
1 changed files with 29 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
artiq/frontend/bit2bin.py
View File

@ -32,39 +32,38 @@ def flip32(data):
def bit2bin(bit, bin, flip=False):
bitfile = open(bit, "rb")
with open(bit, "rb") as bitfile:
l, = struct.unpack(">H", bitfile.read(2))
if l != 9:
raise ValueError("Missing <0009> header, not a bit file")
l, = struct.unpack(">H", bitfile.read(2))
if l != 9:
raise ValueError("Missing <0009> header, not a bit file")
bitfile.read(l)
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
if d != b"a":
raise ValueError("Missing <a> header, not a bit file")
bitfile.read(l)
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
if d != b"a":
raise ValueError("Missing <a> header, not a bit file")
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
print("Design name:", d)
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
print("Design name:", d)
while True:
key = bitfile.read(1)
if not key:
break
if key in b"bcd":
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
name = {b"b": "Partname", b"c": "Date", b"d": "Time"}[key]
print(name, d)
elif key == b"e":
l, = struct.unpack(">I", bitfile.read(4))
print("found binary data length:", l)
d = bitfile.read(l)
if flip:
d = flip32(d)
with open(bin, "wb") as f:
f.write(d)
else:
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
print("Unexpected key: ", key, d)
while True:
key = bitfile.read(1)
if not key:
break
if key in b"bcd":
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
name = {b"b": "Partname", b"c": "Date", b"d": "Time"}[key]
print(name, d)
elif key == b"e":
l, = struct.unpack(">I", bitfile.read(4))
print("found binary data length:", l)
d = bitfile.read(l)
if flip:
d = flip32(d)
with open(bin, "wb") as f:
f.write(d)
else:
d = bitfile.read(*struct.unpack(">H", bitfile.read(2)))
print("Unexpected key: ", key, d)
if __name__ == "__main__":