mirror of
git://xwords.git.sourceforge.net/gitroot/xwords/xwords
synced 2025-01-03 23:04:08 +01:00
68 lines
2.3 KiB
Python
Executable file
68 lines
2.3 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
#
|
|
# Copyright 2001-2020 by Eric House (xwords@eehouse.org). All
|
|
# rights reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
#
|
|
#
|
|
# Given a pbitm on stdin, a text bitmap file where '#' indicates a set
|
|
# bit and '-' indicates a clear bit, convert into binary form (on
|
|
# stdout) where there's one bit per bit plus a byte each for the width
|
|
# and height. Nothing for bitdepth at this point. And no padding: if
|
|
# the number of bits in a row isn't a multiple of 8 then one byte will
|
|
# hold the last bits of one row and the first of another.
|
|
|
|
import os, struct, sys
|
|
|
|
lines = [ line.strip() for line in sys.stdin ]
|
|
nRows = len(lines)
|
|
nCols = 0
|
|
bits = ''
|
|
|
|
# first gather information and sanity-check the data
|
|
|
|
for line in lines:
|
|
lineLen = len(line)
|
|
if nCols == 0:
|
|
nCols = lineLen
|
|
else:
|
|
assert nCols == lineLen, 'line of inconsistent length'
|
|
bits += line
|
|
|
|
with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
|
|
stdout.write(struct.pack('B', nCols))
|
|
|
|
# if we've been given an empty file, print out a single null byte
|
|
# and be done. That'll be the convention for "non-existant
|
|
# bitmap".
|
|
|
|
if nCols > 0:
|
|
stdout.write(struct.pack( 'B', nRows ) )
|
|
print( 'emitting {}x{} bitmap'.format(nCols, nRows), file=sys.stderr)
|
|
|
|
while bits:
|
|
cur = bits[:8]
|
|
bits = bits[8:]
|
|
|
|
byt = 0
|
|
for indx in range(len(cur)):
|
|
ch = cur[indx]
|
|
assert ch == '-' or ch == '#', "char {} neither '#' nor '-'".format(ch)
|
|
if ch == '#': byt |= 1 << (7 - indx)
|
|
|
|
stdout.write(struct.pack( 'B', byt ))
|
|
|
|
stdout.flush()
|