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https://github.com/svofski/glasstty.git
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99 lines
2.2 KiB
Python
99 lines
2.2 KiB
Python
import os
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import sys
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import re
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import png
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def tobin(x, count=8):
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"""
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Integer to binary
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Count is number of bits
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"""
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return "".join(map(lambda y:str((x>>y)&1), range(count-1, -1, -1)))
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def chartosixel(c):
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return ord(c) - 077
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# 7x10 char matrix
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class vtchar:
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m = []
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charcode = 0
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def __init__(self, code):
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self.m = [' ' for x in range(7*10)]
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self.charcode = code
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def sixel(self, nsixel, topbottom, c):
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bits = chartosixel(c)
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rang3 = range(6 - 2*topbottom)
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for b in rang3:
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bit = (bits>>b) & 001
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self.m[(topbottom*6+b)*7 + nsixel] = '01'[bit]
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def sixelpack(self, spair):
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sp = spair.strip().split('/')
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for tb in [0,1]:
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for sc in range(7):
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self.sixel(sc,tb,sp[tb][sc])
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def dump(self):
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i = 0
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for c in self.m:
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print c,
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i = i + 1
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if i % 7 == 0: print('\n')
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def writepng(self):
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# pack
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s=[]
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i = 0
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b = 0
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for c in self.m:
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i = i + 1
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b = b | (int(c)<<(9-((i-1)%7)))
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if i % 7 == 0:
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b = b | (b>>1)
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s.append(tobin(~b,10))
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s.append(tobin(~0,10))
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b = 0
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s = map(lambda x: map(int, x), s)
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f = open('u%04x.png'%self.charcode, 'wb')
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w = png.Writer(len(s[0]), len(s), greyscale=True, bitdepth=1)
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w.write(f, s)
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f.close()
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print 'Opening file "VT200"...'
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try:
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text = open('VT200').read().replace('\n', ' ')
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except:
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print "error"
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sys.exit(1)
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fontdef = re.compile('.*\033P([0-9]\;){5}[0-9]\{\s*[A-Za-z]+\s+(?P<sixels>[^\033]*)\033\/')
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try:
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sixels = fontdef.match(text).expand('\g<sixels>')
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except:
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print "VT200 doesn't seem to contain character definitions"
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sys.exit(2)
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test=False
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if test:
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v = vtchar(0)
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#v.sixelpack('~~~~~~~/~~~~~~~')
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#v.dump()
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v.sixelpack('ogcacgo/B?????B')
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v.dump()
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v.writepng()
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sys.exit(0)
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charcode = 1024
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for chardef in sixels.split(';'):
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v=vtchar(charcode)
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v.sixelpack(chardef)
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#v.dump()
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v.writepng()
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charcode = charcode + 1
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