amr/mspconvert
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File extensions handled much better now

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This commit is contained in:
A.M. Rowsell 2022-07-05 16:35:04 -04:00
commit a0f7598de2
1 changed files with 16 additions and 14 deletions
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30
mspconvert.py
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@ -6,15 +6,17 @@
# one at https://mozilla.org/MPL/2.0/.
import sys
import re
print("MS Paint file converter utility v0.1")
print("Written by A.M. Rowsell, MPL Version 2.0 license\n")
if len(sys.argv) < 2:
print("Please provide filename (without extension)!")
print("Example usage:\n./mspconvert.py DONUT")
print("Please provide filename!")
print("Example usage:\n./mspconvert.py DONUT.MSP")
sys.exit(255)
filename = sys.argv[1]
filename_ne = re.split(r"\.", filename)[0]
width = 0
height = 0
# The output file follows the very simple XBM format
@ -29,19 +31,19 @@ static unsigned char {0}_bits [] =
outputData = b''
try:
with open(filename + ".MSP", 'rb') as f:
versionString = f.read(4)
if versionString == b'\x4c\x69\x6e\x53':
with open(filename, 'rb') as f:
versionString = f.read(4) # check for the magic bytes
if versionString == b'\x4c\x69\x6e\x53': # this represents the string "LinS"
version = 2
elif versionString == b'\x44\x61\x6e\x4d':
elif versionString == b'\x44\x61\x6e\x4d': # this represents the string "DanM"
version = 1
else:
print("The given file {0}.MSP is not a valid Microsoft Paint file!".format(filename))
sys.exit(255)
print("The given file {0} is not a valid Microsoft Paint file!".format(filename))
sys.exit(255) # exit with -1
if version == 2:
print("Version 2 Paint file detected...")
width = int.from_bytes(f.read(2), "little")
Width = int.from_bytes(f.read(2), "little")
height = int.from_bytes(f.read(2), "little")
size = int((width * height) / 8)
f.seek((height * 2) + 32) # seek to the start of image data
@ -52,7 +54,7 @@ try:
for i in range(0,rllLen):
outputData += rllValue
size -= 1
else:
else: # read the following number of bytes verbatim
rllLen = int.from_bytes(byte, "little")
for i in range(0,rllLen):
outputData += f.read(1)
@ -61,7 +63,7 @@ try:
for i in range(0, size):
outputData += b'\xff'
with open(filename + "_converted.xbm", 'w') as f:
with open(filename_ne + "_converted.xbm", 'w') as f:
print("Writing output file...")
f.write(outputString.format(filename, width, height))
f.write(" {\n")
@ -93,17 +95,17 @@ try:
q = 0
outputString += " };"
with open(filename + "_converted.xbm", 'w') as f:
with open(filename_ne + "_converted.xbm", 'w') as f:
print("Writing output file...")
f.write(outputString)
print("Done!")
sys.exit(0)
except FileNotFoundError:
print("{0}.MSP does not exist! Quitting...".format(filename))
print("{0} does not exist! Quitting...".format(filename))
sys.exit(255)
except PermissionError:
print("Unable to open {0}.MSP -- insufficient permissions! Quitting...".format(filename))
print("Unable to open {0} -- insufficient permissions! Quitting...".format(filename))
sys.exit(255)
except Exception:
print("Something went wrong! Quitting...")