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Term.py
543 lines (543 loc) · 20.9 KB
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Term.py
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import pygame
import pygame.freetype
import pygame.fastevent
import threading
import struct
import time
class Term(object):
CSI = '\x1b[' #ESC[
colortable = {
'guess' : [
[ #normal intensity
(0, 0, 0), #black
(160, 0, 0), #red
(0, 160, 0), #green
(160, 160, 0), #yellow
(0, 0, 160), #blue
(160, 0, 160), #magenta
(0, 160, 160), #cyan
(160, 160, 160), #white
],
[ #bright intensity
(80, 80, 80), #black
(255, 0, 0), #red
(0, 255, 0), #green
(255, 255, 0), #yellow
(0, 0, 255), #blue
(255, 0, 255), #magenta
(0, 255, 255), #cyan
(255, 255, 255) #white
]
],
'vga' : [
[ #normal intensity
(0, 0, 0), #black
(170, 0, 0), #red
(0, 170, 0), #green
(170, 85, 0), #yellow
(0, 0, 170), #blue
(170, 0, 170), #magenta
(0, 170, 170), #cyan
(170, 170, 170) #white
],
[ #bright intensity
(85, 85, 85), #black
(255, 85, 85), #red
(85, 255, 85), #green
(255, 255, 85), #yellow
(85, 85, 255), #blue
(255, 85, 255), #magenta
(85, 255, 255), #cyan
(255, 255, 255) #white
]
],
'syncterm' : [
[ #normal intensity
(0, 0, 0), #black
(168, 0, 0), #red
(0, 168, 0), #green
(168, 84, 0), #yellow
(0, 0, 168), #blue
(168, 0, 168), #magenta
(0, 168, 168), #cyan
(168, 168, 168) #white
],
[ #bright intensity
(84, 84, 84), #black
(255, 84, 84), #red
(84, 255, 84), #green
(255, 255, 84), #yellow
(84, 84, 255), #blue
(255, 84, 255), #magenta
(84, 255, 255), #cyan
(255, 255, 255) #white
]
],
'amber' : [
[ #normal intensity
(16, 16, 0), #black
(224, 224, 72), #red
(224, 224, 72), #green
(224, 224, 72), #yellow
(224, 224, 72), #blue
(224, 224, 72), #magenta
(224, 224, 72), #cyan
(224, 224, 72), #white
],
[ #bright intensity
(64, 64, 16), #black
(255, 255, 128), #red
(255, 255, 128), #green
(255, 255, 128), #yellow
(255, 255, 128), #blue
(255, 255, 128), #magenta
(255, 255, 128), #cyan
(255, 255, 128), #white
]
]
}
def __init__(self, **kwargs):
pygame.init()
pygame.freetype.init()
pygame.fastevent.init()
pygame.display.set_caption("pybbsterm (alt-x to quit)")
self.encoding = "cp437"
self.bell = "stdout"
#self.bell = False
self.cols = 80
self.rows = 25
self.eolwrap = True
self.cursorx = 1 #column is 1-indexed
self.cursory = 1 #row is 1-indexed
self.escape = False
self.setcolorscheme('vga')
self.blink = False
self.bright = False
self.readevent = pygame.event.custom_type()
self.closeevent = pygame.event.custom_type()
self.controlsequence = False
self.controlsequencedata = b''
self.controlsequencecmdseen = set()
self.capture = False
self.endpoint = False
self.scale = 1
return
def attach(self, endpoint):
self.endpoint = endpoint
endpoint.setuploop(readevent=self.readevent, closeevent=self.closeevent)
threading.Thread(target=self.endpoint.loop, args=()).start()
return
def setkeyboardtranslator(self, translator):
self.keyboardtranslator = translator
return
def setwindowmode(self, x, y):
self.screen = pygame.display.set_mode((x, y))
return
def adjusttofont(self):
sizes = {size: (height, width, ppemx, ppemy) for (size, height, width, ppemx, ppemy) in self.font.get_sizes()}
print(f"font sizes: {sizes}")
if type(self.font.size) is tuple:
(size, sizeother) = self.font.size
else:
size = self.font.size
if len(sizes):
print(f"chosen font size: {self.font.size}")
(self.fonty, self.fontx, ppemx, ppemy) = sizes[size]
else:
self.font.pad = True
print(f"font size: {self.font.size}")
(x, y, self.fontx, self.fonty) = self.font.get_rect("#") #FIXME: Ugly fallback.
print(f"detected size: {x}, {y}, {self.fontx}, {self.fonty}")
self.surfacex = self.cols*self.fontx
self.surfacey = self.rows*self.fonty
self.setwindowmode(self.surfacex*self.scale, self.surfacey*self.scale)
self.surface = pygame.Surface((self.surfacex, self.surfacey))
return
def setfontbypath(self, fontpath, fontsize):
if fontsize:
self.font = pygame.freetype.Font(fontpath, fontsize)
else:
self.font = pygame.freetype.Font(fontpath)
if not self.font.fixed_width:
print(f"Font {str(self.font)} is not fixed width. Exiting.")
return None
self.adjusttofont()
return str(self.font)
def setfontbyname(self, fontname, fontsize):
if fontsize:
self.font = pygame.freetype.SysFont(fontname, fontsize)
else:
self.font = pygame.freetype.SysFont(fontname, 12)
if not self.font.fixed_width:
print(f"Font {str(self.font)} is not fixed width. Exiting.")
return None
self.adjusttofont()
return str(self.font)
def setcolorscheme(self, scheme):
if not scheme in self.colortable:
return list(self.colortable.keys())
self.color = self.colortable[scheme]
self.fgcolordefault = len(self.color[0])-1
self.bgcolordefault = 0
self.fgcolor = self.fgcolordefault
self.bgcolor = self.bgcolordefault
return scheme
def translate(self, byte):
char = byte.decode(self.encoding)
return char
def getfgcolor(self):
if self.bright:
return self.color[1][self.fgcolor]
else:
return self.color[0][self.fgcolor]
def getbgcolor(self):
return self.color[0][self.bgcolor]
def getcursorx(self):
return self.fontx*(self.cursorx-1)
def getcursory(self):
return self.fonty*(self.cursory-1)
def getcursorcolor(self):
#return (255, 192, 192)
return self.getfgcolor()
def processcontrol(self, cmd, data):
#print(f"CS ESC[{data.decode(self.encoding)}{cmd.decode(self.encoding)}")
if cmd == b'A': #Cursor Up
params = data.split(b';')
if len(params) != 1:
print(f"CS A invalid params: {params} data: {data}")
return
if not len(params[0]):
p1 = 1
else:
p1 = int(params[0])
self.cursory = max(self.cursory-p1, 1)
#print(f"CS A {p1}")
return
if cmd == b'B': #Cursor Down
params = data.split(b';')
if len(params) != 1:
print(f"CS B invalid params: {params} data: {data}")
return
if not len(params[0]):
p1 = 1
else:
p1 = int(params[0])
self.cursory = min(self.cursory+p1, self.rows)
#print(f"CS B {p1}")
return
if cmd == b'C': #Cursor Right
params = data.split(b';')
if len(params) != 1:
print(f"CS C invalid params: {params} data: {data}")
return
if not len(params[0]):
p1 = 1
else:
p1 = int(params[0])
self.cursorx = min(self.cursorx+p1, self.cols)
#print(f"CS C {p1}")
return
if cmd == b'D': #Cursor Left
params = data.split(b';')
if len(params) != 1:
print(f"CS D invalid params: {params} data: {data}")
return
if not len(params[0]):
p1 = 1
else:
p1 = int(params[0])
self.cursorx = max(self.cursorx-p1, 1)
#print(f"CS D {p1}")
return
if cmd == b'H' or cmd == b'f': #Cursor Position
params = data.split(b';')
if len(params) > 2:
print(f"CS H invalid params: {params}")
return
if not len(params[0]):
p1 = 1
p2 = 1
else:
p1 = int(params[0])
if len(params) == 2:
p2 = int(params[1])
else:
p2 = 1
self.cursory = p1
self.cursorx = p2
#print(f"CS {chr(ord(cmd))} set row: {p1} col: {p2}")
return
if cmd == b'J': #Erase in Page
params = data.split(b';')
if len(params) > 1:
print(f"CS J invalid params: {params}")
return
if len(params[0]):
p1 = int(params[0])
else:
p1 = 0
#print(f"CS J p1={p1}")
if p1 == 2: #Erase entire screen
self.cursorx = 1
self.cursory = 1
self.surface.fill(color=self.bgcolor)
return
print(f"CS J unimpl p1={p1}")
return
if cmd == b'K': #Erase in Line
params = data.split(b';')
if len(params) > 1:
print(f"CS J invalid params: {params}")
return
if len(params[0]):
p1 = int(params[0])
else:
p1 = 0
#print(f"CS K {p1} requested. R:{self.cursory} C:{self.cursorx}.")
if p1 == 0: #Erase from the current position to the end of the line.
self.surface.fill(color=self.getbgcolor(), rect=(self.getcursorx(), self.getcursory(), self.fontx*self.cols, self.fonty))
return
if p1 == 1: #Erase from the current position to the start of the line.
self.surface.fill(color=self.getbgcolor(), rect=(0, self.getcursory(), self.getcursorx(), self.fonty))
return
if p1 == 2: #Erase entire line
self.surface.fill(color=self.getbgcolor(), rect=(0, self.getcursory(), self.fontx*self.cols, self.fonty))
return
print(f"CS K unimpl p1={p1}")
return
if cmd == b'm': #Select Graphic Rendition
params = data.split(b';')
if not len(params[0]):
params[0] = b'0'
for param in params:
pX = int(param)
#print(f"CS m pX: {pX}")
if pX == 0: #Default attribute, white on black
self.blink = False
self.bright = False
self.fgcolor = self.fgcolordefault
self.bgcolor = self.bgcolordefault
continue
if pX == 1: #Bright Intensity
self.bright = True
continue
if pX == 2: #Dim Intensity
print("CS m Dim Intensity requested, bright instead.")
self.bright = True
continue
if pX == 5:
print("CS m Blink (slow) requested, not handled.")
continue
if pX == 6:
print("CS m Blink (fast) requested, not handled.")
continue
if pX == 7: #Negative Image - Reverses FG and BG
self.fgcolor, self.bgcolor = self.bgcolor, self.fgcolor
continue
if pX == 8: #Concealed characters. Sets the FG to the BG
self.bgcolor = self.fgcolor
continue
if pX == 10: #Not ANSI-BBS: Set font to default font.
print("CS m Default font requested, not handled.")
continue
if pX == 22: #Normal intensity
self.bright = False
continue
if pX == 25: #Steady (not blinking)
self.blink = False
continue
if pX >= 30 and pX <= 37: #Set foreground color
self.fgcolor = pX%10
continue
if pX == 39: #Not ANSI-BBS: Default foreground color
self.fgcolor = self.fgcolordefault
continue
if pX >= 40 and pX <= 47: #Set background color
self.bgcolor = pX%10
continue
if pX == 49: #Not ANSI-BBS: Default background color
self.bgcolor = self.bgcolordefault
continue
else:
print(f"CS m unimpl pX={pX}")
return
if cmd == b'n': #Device Status Report
params = data.split(b';')
if len(params) != 1:
print(f"CS n invalid params: {params}")
return
p1 = int(params[0])
if p1 == 6: #Request active cursor position
response = self.CSI + str(self.cursory) + ';' + str(self.cursorx) + 'R'
self.endpoint.write(response.encode(self.encoding))
return
print(f"CS n unimpl p1={p1}")
return
if cmd == b's': #Save Current Cursor Position
if len(data):
print(f"CS s invalid params: {data}")
return
self.cursorsavedx = self.cursorx
self.cursorsavedy = self.cursory
return
if cmd == b'u': #Restore Cursor Position
if len(data):
print(f"CS u invalid params: {data}")
return
self.cursorx = self.cursorsavedx
self.cursory = self.cursorsavedy
return
print(f"CS unknown CMD: {cmd} parameters: {data}")
return
def processoutput(self, data):
for byte in data:
if not byte: #NUL
continue
if self.controlsequence:
if byte >= 0x40 and byte <= 0x7e:
cmd = byte.to_bytes(1, byteorder='big')
self.controlsequence = False
self.controlsequencecmdseen.add(cmd)
self.processcontrol(cmd, self.controlsequencedata)
self.controlsequencedata = b''
continue
else:
self.controlsequencedata += byte.to_bytes(1, byteorder='big')
continue
if self.escape:
self.escape = False
if byte == ord('['):
self.controlsequence = True
continue
if byte == 0x1b:
self.escape = True
continue
if byte == 10:
#print("NL!")
if self.cursory == self.rows:
#print("scroll text up one line!")
self.surface.scroll(0, -self.fonty)
self.surface.fill(color=self.getbgcolor(), rect=(0, self.fonty*(self.rows-1), self.fontx*self.cols, self.fonty*self.rows))
continue
self.cursory += 1
continue
if byte == 12:
#print("FF!")
self.cursorx = 1
self.cursory = 1
self.surface.fill(color=self.bgcolor)
continue
if byte == 13:
#print("CR!")
self.cursorx = 1
continue
if byte == 8:
#print("BS!")
self.cursorx = max(1,self.cursorx-1)
continue
if byte == 7:
if self.bell == "stdout":
print("BELL!!!"+'\a')
else:
print("BELL!!!")
continue
char = self.translate(byte.to_bytes(1, byteorder='big'))
textsurface, textrect = self.font.render(char, fgcolor=self.getfgcolor(), bgcolor=self.getbgcolor())
self.surface.blit(textsurface, (self.getcursorx(), self.getcursory()))
#print(char, textsurface, textrect, self.cursorx*self.fontx, self.cursory*self.fonty)
if self.eolwrap:
self.cursorx += 1
if self.cursorx > self.cols: #wrap
self.cursorx = 1
if self.cursory == self.rows:
self.surface.scroll(0, -self.fonty)
self.surface.fill(color=self.getbgcolor(), rect=(0, self.fonty*(self.rows-1), self.fontx*self.cols, self.fonty*self.rows))
else:
self.cursory += 1
else:
self.cursorx = min(self.cursorx+1, self.cols)
return
def capturetoggle(self):
if self.capture:
self.capture.close()
self.capture = None
print(f"Capture finished.")
else:
capturefilename = time.strftime("capture_%Y%m%dT%H%M%SZ.log", time.gmtime())
print(f"Capture started, file: {capturefilename}.")
capturefilepath = capturefilename
self.capture = open(capturefilepath, "wb")
return
def processkeyboardinput(self, key, mod):
if mod & pygame.KMOD_ALT:
if key==ord('x'):
pygame.event.post(pygame.event.Event(pygame.QUIT))
return
if mod & pygame.KMOD_CTRL:
if key==pygame.K_PLUS or key==pygame.K_KP_PLUS:
self.scale += 1
print(f"Output scale: {self.scale}x")
self.setwindowmode(self.surfacex*self.scale, self.surfacey*self.scale)
return
if key==pygame.K_MINUS or key==pygame.K_KP_MINUS:
self.scale = max(self.scale-1, 1)
print(f"Output scale: {self.scale}x")
self.setwindowmode(self.surfacex*self.scale, self.surfacey*self.scale)
return
if self.endpoint:
#special keys with local meaning
if key==pygame.K_PRINT:
self.capturetoggle()
return
if mod & pygame.KMOD_SHIFT:
if key==pygame.K_ESCAPE:
self.endpoint.close()
return
elif key==pygame.K_F1:
self.endpoint.user(1)
return
elif key==pygame.K_F2:
self.endpoint.user(2)
return
elif key==pygame.K_F3:
self.endpoint.user(3)
return
elif key==pygame.K_F4:
self.endpoint.user(4)
return
elif key==pygame.K_F12:
self.capturetoggle()
return
#rest of events go to keyb translator
if data := self.keyboardtranslator.translate(key, mod):
self.endpoint.write(data)
return
return
def loop(self):
while True:
event = pygame.fastevent.wait()
if event.type==pygame.QUIT:
print("QUIT event received.")
if self.endpoint:
self.endpoint.close()
break
if event.type==self.readevent:
#print(f"data: {event.data}")
if self.capture:
self.capture.write(event.data)
self.processoutput(event.data)
if event.type==self.closeevent:
self.endpoint = False
print("Connection closed.")
print(f"Commands seen: {b''.join(self.controlsequencecmdseen)}")
if event.type==pygame.KEYDOWN:
#print(f"keyb input mod: {event.mod}, key: {event.key}")
self.processkeyboardinput(event.key, event.mod)
if self.scale == 1:
self.screen.blit(self.surface, (0, 0))
else:
self.screen.blit(pygame.transform.scale(self.surface, (self.surfacex*self.scale, self.surfacey*self.scale)), (0, 0))
self.screen.fill(color=self.getcursorcolor(), rect=(self.getcursorx()*self.scale, self.getcursory()*self.scale, self.fontx*self.scale, self.fonty*self.scale))
pygame.display.flip()
pygame.quit()
return