amr/mspconvert
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File extensions handled much better now

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