add prototype for automatic encoding, that should also alow pseudo unicode (russia, chinese and co)

play zone/charmapTTY.py

@@ -0,0 +1,70 @@
+#!/bin/python3
+from fcntl import ioctl
+from array import array
+import struct
+import errno
+import sys
+
+ttyno = 4 
+tty = open('/dev/tty%d' % ttyno, 'rb')
+vcs = open('/dev/vcsa%d' % ttyno, 'rb')
+
+head = vcs.read(4)
+rows = int(head[0])
+cols = int(head[1])
+
+
+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)
+
+charmap = {}
+for u, b in zip(utable[::2], utable[1::2]):
+    if charmap.get(b) is None:
+        charmap[b] = u
+
+allText = []
+allAttrib = []
+for y in range(rows):
+    lineText = ''
+    lineAttrib = []
+    for x in range(cols):
+        data = vcs.read(2)
+        (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
+        lineText += chr(charmap.get(ch, u'?'))
+    allText.append(lineText)
+    allAttrib.append(lineAttrib)
+
+print(allText)
+print(allAttrib)