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authorLars-Dominik Braun <lars@6xq.net>2016-09-29 18:22:02 +0200
committerLars-Dominik Braun <lars@6xq.net>2016-09-29 18:22:02 +0200
commit63565100c3ffa1f122b43a98a4e6d3a81989ac99 (patch)
treeb4869313aa4ba3dce6de7fbeb067de1663e8f272
parent94858048861376fbd1e100097759f2762afdaf1e (diff)
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Add ZEICHENSATZ dumper
-rwxr-xr-xconvertCharset.py71
1 files changed, 71 insertions, 0 deletions
diff --git a/convertCharset.py b/convertCharset.py
new file mode 100755
index 0000000..59163aa
--- /dev/null
+++ b/convertCharset.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+
+"""
+Convert file ZEICHENSATZ from graphics package to PNG files
+"""
+
+from eumel import *
+
+class ZeichensatzDataspace(Dataspace):
+ TYPE = 0x44c
+
+ def __init__ (self, fd):
+ Dataspace.__init__ (self, fd)
+
+ # just an array with 255 elements
+ self.rows = []
+ for i in range (255):
+ self.rows.append (self.parseText ())
+ self.parseHeap ()
+
+if __name__ == '__main__':
+ import argparse, sys, cairo, math
+
+ def transform (w, h, x, y):
+ return ((2+x), (11-y))
+
+ parser = argparse.ArgumentParser(description='Convert ZEICHENSATZ dataspace to PNG')
+ parser.add_argument ('-v', '--verbose', help='Enable debugging messages', action='store_true')
+ parser.add_argument ('file', help='Input file')
+ parser.add_argument ('prefix', help='Output prefix')
+ args = parser.parse_args ()
+
+ if args.verbose:
+ logging.basicConfig (level=logging.DEBUG)
+ else:
+ logging.basicConfig (level=logging.WARNING)
+
+ m = []
+ with open (args.file, 'rb') as fd:
+ ds = ZeichensatzDataspace (fd)
+ # no character with code 0
+ for (j, r) in zip (range (1, len (ds.rows)+1), ds.rows):
+ if len (r) == 0:
+ continue
+
+ out = '{}{:03d}.png'.format (args.prefix, j)
+ logging.info ('Converting character {} to {}'.format (j, out))
+ w, h = 1024, 1024
+ surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, w, h)
+ ctx = cairo.Context(surface)
+ ctx.scale (64, 64)
+ ctx.set_line_width (0.1)
+ ctx.set_source_rgb (1, 0, 0)
+
+ r = bytes (r)
+ lastxy = (0, 0)
+ for i in range (0, len (r), 4):
+ x0, y0, x1, y1 = struct.unpack ('<bbbb', r[i:i+4])
+ m.extend ([x0, y0, x1, y1])
+ if (x0, y0) != lastxy:
+ ctx.move_to (*transform (w, h, x0, y0))
+ if (x0, y0) != (x1, y1):
+ ctx.line_to (*transform (w, h, x1, y1))
+ else:
+ x1, y1 = transform (w, h, x1, y1)
+ ctx.arc (x1, y1, 0.1, 0, 2*math.pi)
+ lastxy = (x1, y1)
+ ctx.stroke ()
+
+ surface.write_to_png (out)
+