Update charmapTTY.py

play zone/charmapTTY.py

@@ -1,81 +1,84 @@
-#!/bin/python3
+import time
-#attrib:
+from fcntl import ioctl
-#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
 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()
-GIO_UNIMAP = 0x4B66
-VT_GETHIFONTMASK = 0x560D
-himask = array("H", (0,))
-fcntl.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)
-        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]):
+def updateCharMap(screen):
-    if charmap.get(b) is None:
+    ttyno = '4' 
-        charmap[b] = u
+    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)
 
-allText = []
-allAttrib = []
 
-for y in range(rows):
+def autoDecodeVCSA(allData):
-    lineText = ''
+    allText = []
-    lineAttrib = []
+    allAttrib = []
-    for x in range(cols):
+    print(time.time() -s )    
-        data = vcs.read(2)
+    for y in range(rows):
-        (sh,) = struct.unpack("=H", data)
+        lineText = ''
-        attr = (sh >> 8) & 0xFF
+        lineAttrib = []
-        ch = sh & 0xFF
+        i = 0
-        if hichar == 0x100:
+        for x in range(cols):
-            attr >>= 1
+            data = allData[i: i + 2]
-        lineAttrib.append(attr)             
+            if data == b' \x07':
-        ink = attr & 0x0F
+                attr = 7
-        paper = (attr>>4) & 0x0F
+                ink = 7
-        #if (ink != 7) or (paper != 0):
+                paper = 0
-        #    print(ink,paper)
+                lineAttrib.append(7)             
-        if sh & hichar:
+                lineText += ' '
-            ch |= 0x100
+                continue
-        lineText += chr(charmap.get(ch, u'?'))
+            (sh,) = struct.unpack("=H", data)
-    allText.append(lineText)
+            attr = (sh >> 8) & 0xFF
-    allAttrib.append(lineAttrib)
+            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
 
-#print(allText)
+def m():
-#print(allAttrib)
+    s = time.time()
-print(time.time() -s)
+    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 )
+