Update charmapTTY.py

play zone/charmapTTY.py

@@ -1,65 +1,55 @@
-#!/bin/python3
-#attrib:
-#http://rampex.ihep.su/Linux/linux_howto/html/tutorials/mini/Colour-ls-6.html
-#0 = black, 1 = blue, 2 = green, 3 = cyan, 4 = red, 5 = purple, 6 = brown/yellow, 7 = white. 
-#https://github.com/jwilk/vcsapeek/blob/master/linuxvt.py
-#blink = 5 if attr & 1 else 0
-#bold = 1 if attr & 16 else 0
-import fcntl
+import time
+from fcntl import ioctl
 from array import array
 import struct
 import errno
 import sys
-import time
-
-
-
-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])
-
-s = time.time()
+charmap = {}
+def updateCharMap(screen):
+    ttyno = '4' 
+    tty = open('/dev/tty' + screen, 'rb')
     GIO_UNIMAP = 0x4B66
     VT_GETHIFONTMASK = 0x560D
     himask = array("H", (0,))
-fcntl.ioctl(tty, VT_GETHIFONTMASK, himask)
+    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]))
-        fcntl.ioctl(tty.fileno(), GIO_UNIMAP, unimapdesc)
+            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
+            charmap[b] = chr(u)
 
+
+def autoDecodeVCSA(allData):
     allText = []
     allAttrib = []
-
+    print(time.time() -s )    
     for y in range(rows):
         lineText = ''
         lineAttrib = []
+        i = 0
         for x in range(cols):
-        data = vcs.read(2)
+            data = allData[i: i + 2]
+            if data == b' \x07':
+                attr = 7
+                ink = 7
+                paper = 0
+                lineAttrib.append(7)             
+                lineText += ' '
+                continue
             (sh,) = struct.unpack("=H", data)
             attr = (sh >> 8) & 0xFF
             ch = sh & 0xFF
@@ -72,10 +62,23 @@ for y in range(rows):
             #    print(ink,paper)
             if sh & hichar:
                 ch |= 0x100
-        lineText += chr(charmap.get(ch, u'?'))
+            try:
+                lineText += charmap[ch]            
+            except:
+                lineText += chr('?')
+            i += 2
         allText.append(lineText)
         allAttrib.append(lineAttrib)
+    return allText, allAttrib
 
-#print(allText)
-#print(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 )
+