86 lines
2.4 KiB
Python
Executable File
86 lines
2.4 KiB
Python
Executable File
import time
|
|
from fcntl import ioctl
|
|
from array import array
|
|
import struct
|
|
import errno
|
|
import sys
|
|
charmap = {}
|
|
def updateCharMap(screen):
|
|
ttyno = '4'
|
|
tty = open('/dev/tty' + screen, 'rb')
|
|
GIO_UNIMAP = 0x4B66
|
|
VT_GETHIFONTMASK = 0x560D
|
|
himask = array("H", (0,))
|
|
ioctl(tty, VT_GETHIFONTMASK, himask)
|
|
hichar, = struct.unpack_from("@H", himask)
|
|
sz = 512
|
|
line = ''
|
|
while True:
|
|
try:
|
|
unipairs = array("H", [0]*(2*sz))
|
|
unimapdesc = array("B", struct.pack("@HP", sz, unipairs.buffer_info()[0]))
|
|
ioctl(tty.fileno(), GIO_UNIMAP, unimapdesc)
|
|
break
|
|
except IOError as e:
|
|
if e.errno != errno.ENOMEM:
|
|
raise
|
|
sz *= 2
|
|
tty.close()
|
|
ncodes, = struct.unpack_from("@H", unimapdesc)
|
|
utable = struct.unpack_from("@%dH" % (2*ncodes), unipairs)
|
|
for u, b in zip(utable[::2], utable[1::2]):
|
|
if charmap.get(b) is None:
|
|
charmap[b] = chr(u)
|
|
|
|
|
|
def autoDecodeVCSA(allData):
|
|
allText = []
|
|
allAttrib = []
|
|
for y in range(rows):
|
|
lineText = ''
|
|
lineAttrib = []
|
|
i = 0
|
|
for x in range(cols):
|
|
data = allData[i: i + 2]
|
|
if data == b' \x07':
|
|
#attr = 7
|
|
#ink = 7
|
|
#paper = 0
|
|
#ch = ' '
|
|
lineAttrib.append(7)
|
|
lineText += ' '
|
|
i += 2
|
|
continue
|
|
(sh,) = struct.unpack("=H", data)
|
|
attr = (sh >> 8) & 0xFF
|
|
ch = sh & 0xFF
|
|
if hichar == 0x100:
|
|
attr >>= 1
|
|
lineAttrib.append(attr)
|
|
ink = attr & 0x0F
|
|
paper = (attr>>4) & 0x0F
|
|
#if (ink != 7) or (paper != 0):
|
|
# print(ink,paper)
|
|
if sh & hichar:
|
|
ch |= 0x100
|
|
try:
|
|
lineText += charmap[ch]
|
|
except:
|
|
lineText += chr('?')
|
|
i += 2
|
|
allText.append(lineText)
|
|
allAttrib.append(lineAttrib)
|
|
return allText, allAttrib
|
|
|
|
def m():
|
|
s = time.time()
|
|
updateCharMap('4')
|
|
print(time.time() -s )
|
|
vcsa = open('/dev/vcsa' + '4', 'rb')
|
|
head = vcsa.read(4)
|
|
rows = int(head[0])
|
|
cols = int(head[1])
|
|
text, attrib = autoDecodeVCSA(vcsa.read())
|
|
print(time.time() -s )
|
|
|