1 | #!/usr/bin/env python |
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2 | |
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3 | """ Ajaxterm """ |
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4 | |
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5 | import array,cgi,fcntl,glob,mimetypes,optparse,os,pty,random,re,signal,select,sys,threading,time,termios,struct,pwd |
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6 | |
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7 | os.chdir(os.path.normpath(os.path.dirname(__file__))) |
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8 | # Optional: Add QWeb in sys path |
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9 | sys.path[0:0]=glob.glob('../../python') |
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10 | |
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11 | import qweb |
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12 | |
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13 | class Terminal: |
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14 | def __init__(self,width=80,height=24): |
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15 | self.width=width |
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16 | self.height=height |
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17 | self.init() |
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18 | self.reset() |
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19 | def init(self): |
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20 | self.esc_seq={ |
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21 | "\x00": None, |
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22 | "\x05": self.esc_da, |
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23 | "\x07": None, |
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24 | "\x08": self.esc_0x08, |
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25 | "\x09": self.esc_0x09, |
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26 | "\x0a": self.esc_0x0a, |
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27 | "\x0b": self.esc_0x0a, |
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28 | "\x0c": self.esc_0x0a, |
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29 | "\x0d": self.esc_0x0d, |
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30 | "\x0e": None, |
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31 | "\x0f": None, |
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32 | "\x1b#8": None, |
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33 | "\x1b=": None, |
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34 | "\x1b>": None, |
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35 | "\x1b(0": None, |
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36 | "\x1b(A": None, |
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37 | "\x1b(B": None, |
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38 | "\x1b[c": self.esc_da, |
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39 | "\x1b[0c": self.esc_da, |
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40 | "\x1b]R": None, |
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41 | "\x1b7": self.esc_save, |
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42 | "\x1b8": self.esc_restore, |
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43 | "\x1bD": None, |
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44 | "\x1bE": None, |
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45 | "\x1bH": None, |
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46 | "\x1bM": self.esc_ri, |
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47 | "\x1bN": None, |
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48 | "\x1bO": None, |
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49 | "\x1bZ": self.esc_da, |
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50 | "\x1ba": None, |
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51 | "\x1bc": self.reset, |
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52 | "\x1bn": None, |
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53 | "\x1bo": None, |
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54 | } |
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55 | for k,v in self.esc_seq.items(): |
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56 | if v==None: |
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57 | self.esc_seq[k]=self.esc_ignore |
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58 | # regex |
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59 | d={ |
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60 | r'\[\??([0-9;]*)([@ABCDEFGHJKLMPXacdefghlmnqrstu`])' : self.csi_dispatch, |
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61 | r'\]([^\x07]+)\x07' : self.esc_ignore, |
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62 | } |
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63 | self.esc_re=[] |
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64 | for k,v in d.items(): |
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65 | self.esc_re.append((re.compile('\x1b'+k),v)) |
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66 | # define csi sequences |
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67 | self.csi_seq={ |
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68 | '@': (self.csi_at,[1]), |
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69 | '`': (self.csi_G,[1]), |
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70 | 'J': (self.csi_J,[0]), |
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71 | 'K': (self.csi_K,[0]), |
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72 | } |
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73 | for i in [i[4] for i in dir(self) if i.startswith('csi_') and len(i)==5]: |
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74 | if not self.csi_seq.has_key(i): |
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75 | self.csi_seq[i]=(getattr(self,'csi_'+i),[1]) |
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76 | # Init 0-256 to latin1 and html translation table |
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77 | self.trl1="" |
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78 | for i in range(256): |
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79 | if i<32: |
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80 | self.trl1+=" " |
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81 | elif i<127 or i>160: |
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82 | self.trl1+=chr(i) |
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83 | else: |
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84 | self.trl1+="?" |
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85 | self.trhtml="" |
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86 | for i in range(256): |
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87 | if i==0x0a or (i>32 and i<127) or i>160: |
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88 | self.trhtml+=chr(i) |
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89 | elif i<=32: |
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90 | self.trhtml+="\xa0" |
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91 | else: |
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92 | self.trhtml+="?" |
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93 | def reset(self,s=""): |
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94 | self.scr=array.array('i',[0x000700]*(self.width*self.height)) |
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95 | self.st=0 |
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96 | self.sb=self.height-1 |
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97 | self.cx_bak=self.cx=0 |
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98 | self.cy_bak=self.cy=0 |
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99 | self.cl=0 |
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100 | self.sgr=0x000700 |
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101 | self.buf="" |
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102 | self.outbuf="" |
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103 | self.last_html="" |
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104 | def peek(self,y1,x1,y2,x2): |
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105 | return self.scr[self.width*y1+x1:self.width*y2+x2] |
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106 | def poke(self,y,x,s): |
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107 | pos=self.width*y+x |
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108 | self.scr[pos:pos+len(s)]=s |
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109 | def zero(self,y1,x1,y2,x2): |
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110 | w=self.width*(y2-y1)+x2-x1+1 |
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111 | z=array.array('i',[0x000700]*w) |
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112 | self.scr[self.width*y1+x1:self.width*y2+x2+1]=z |
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113 | def scroll_up(self,y1,y2): |
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114 | self.poke(y1,0,self.peek(y1+1,0,y2,self.width)) |
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115 | self.zero(y2,0,y2,self.width-1) |
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116 | def scroll_down(self,y1,y2): |
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117 | self.poke(y1+1,0,self.peek(y1,0,y2-1,self.width)) |
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118 | self.zero(y1,0,y1,self.width-1) |
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119 | def scroll_right(self,y,x): |
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120 | self.poke(y,x+1,self.peek(y,x,y,self.width)) |
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121 | self.zero(y,x,y,x) |
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122 | def cursor_down(self): |
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123 | if self.cy>=self.st and self.cy<=self.sb: |
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124 | self.cl=0 |
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125 | q,r=divmod(self.cy+1,self.sb+1) |
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126 | if q: |
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127 | self.scroll_up(self.st,self.sb) |
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128 | self.cy=self.sb |
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129 | else: |
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130 | self.cy=r |
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131 | def cursor_right(self): |
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132 | q,r=divmod(self.cx+1,self.width) |
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133 | if q: |
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134 | self.cl=1 |
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135 | else: |
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136 | self.cx=r |
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137 | def echo(self,c): |
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138 | if self.cl: |
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139 | self.cursor_down() |
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140 | self.cx=0 |
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141 | self.scr[(self.cy*self.width)+self.cx]=self.sgr|ord(c) |
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142 | self.cursor_right() |
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143 | def esc_0x08(self,s): |
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144 | self.cx=max(0,self.cx-1) |
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145 | def esc_0x09(self,s): |
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146 | x=self.cx+8 |
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147 | q,r=divmod(x,8) |
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148 | self.cx=(q*8)%self.width |
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149 | def esc_0x0a(self,s): |
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150 | self.cursor_down() |
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151 | def esc_0x0d(self,s): |
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152 | self.cl=0 |
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153 | self.cx=0 |
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154 | def esc_save(self,s): |
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155 | self.cx_bak=self.cx |
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156 | self.cy_bak=self.cy |
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157 | def esc_restore(self,s): |
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158 | self.cx=self.cx_bak |
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159 | self.cy=self.cy_bak |
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160 | self.cl=0 |
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161 | def esc_da(self,s): |
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162 | self.outbuf="\x1b[?6c" |
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163 | def esc_ri(self,s): |
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164 | self.cy=max(self.st,self.cy-1) |
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165 | if self.cy==self.st: |
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166 | self.scroll_down(self.st,self.sb) |
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167 | def esc_ignore(self,*s): |
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168 | pass |
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169 | # print "term:ignore: %s"%repr(s) |
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170 | def csi_dispatch(self,seq,mo): |
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171 | # CSI sequences |
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172 | s=mo.group(1) |
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173 | c=mo.group(2) |
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174 | f=self.csi_seq.get(c,None) |
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175 | if f: |
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176 | try: |
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177 | l=[min(int(i),1024) for i in s.split(';') if len(i)<4] |
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178 | except ValueError: |
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179 | l=[] |
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180 | if len(l)==0: |
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181 | l=f[1] |
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182 | f[0](l) |
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183 | # else: |
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184 | # print 'csi ignore',c,l |
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185 | def csi_at(self,l): |
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186 | for i in range(l[0]): |
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187 | self.scroll_right(self.cy,self.cx) |
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188 | def csi_A(self,l): |
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189 | self.cy=max(self.st,self.cy-l[0]) |
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190 | def csi_B(self,l): |
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191 | self.cy=min(self.sb,self.cy+l[0]) |
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192 | def csi_C(self,l): |
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193 | self.cx=min(self.width-1,self.cx+l[0]) |
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194 | self.cl=0 |
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195 | def csi_D(self,l): |
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196 | self.cx=max(0,self.cx-l[0]) |
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197 | self.cl=0 |
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198 | def csi_E(self,l): |
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199 | self.csi_B(l) |
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200 | self.cx=0 |
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201 | self.cl=0 |
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202 | def csi_F(self,l): |
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203 | self.csi_A(l) |
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204 | self.cx=0 |
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205 | self.cl=0 |
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206 | def csi_G(self,l): |
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207 | self.cx=min(self.width,l[0])-1 |
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208 | def csi_H(self,l): |
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209 | if len(l)<2: l=[1,1] |
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210 | self.cx=min(self.width,l[1])-1 |
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211 | self.cy=min(self.height,l[0])-1 |
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212 | self.cl=0 |
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213 | def csi_J(self,l): |
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214 | if l[0]==0: |
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215 | self.zero(self.cy,self.cx,self.height-1,self.width-1) |
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216 | elif l[0]==1: |
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217 | self.zero(0,0,self.cy,self.cx) |
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218 | elif l[0]==2: |
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219 | self.zero(0,0,self.height-1,self.width-1) |
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220 | def csi_K(self,l): |
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221 | if l[0]==0: |
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222 | self.zero(self.cy,self.cx,self.cy,self.width-1) |
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223 | elif l[0]==1: |
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224 | self.zero(self.cy,0,self.cy,self.cx) |
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225 | elif l[0]==2: |
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226 | self.zero(self.cy,0,self.cy,self.width-1) |
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227 | def csi_L(self,l): |
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228 | for i in range(l[0]): |
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229 | if self.cy<self.sb: |
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230 | self.scroll_down(self.cy,self.sb) |
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231 | def csi_M(self,l): |
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232 | if self.cy>=self.st and self.cy<=self.sb: |
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233 | for i in range(l[0]): |
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234 | self.scroll_up(self.cy,self.sb) |
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235 | def csi_P(self,l): |
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236 | w,cx,cy=self.width,self.cx,self.cy |
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237 | end=self.peek(cy,cx,cy,w) |
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238 | self.csi_K([0]) |
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239 | self.poke(cy,cx,end[l[0]:]) |
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240 | def csi_X(self,l): |
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241 | self.zero(self.cy,self.cx,self.cy,self.cx+l[0]) |
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242 | def csi_a(self,l): |
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243 | self.csi_C(l) |
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244 | def csi_c(self,l): |
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245 | #'\x1b[?0c' 0-8 cursor size |
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246 | pass |
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247 | def csi_d(self,l): |
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248 | self.cy=min(self.height,l[0])-1 |
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249 | def csi_e(self,l): |
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250 | self.csi_B(l) |
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251 | def csi_f(self,l): |
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252 | self.csi_H(l) |
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253 | def csi_h(self,l): |
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254 | if l[0]==4: |
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255 | pass |
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256 | # print "insert on" |
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257 | def csi_l(self,l): |
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258 | if l[0]==4: |
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259 | pass |
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260 | # print "insert off" |
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261 | def csi_m(self,l): |
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262 | for i in l: |
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263 | if i==0 or i==39 or i==49 or i==27: |
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264 | self.sgr=0x000700 |
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265 | elif i==1: |
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266 | self.sgr=(self.sgr|0x000800) |
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267 | elif i==7: |
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268 | self.sgr=0x070000 |
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269 | elif i>=30 and i<=37: |
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270 | c=i-30 |
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271 | self.sgr=(self.sgr&0xff08ff)|(c<<8) |
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272 | elif i>=40 and i<=47: |
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273 | c=i-40 |
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274 | self.sgr=(self.sgr&0x00ffff)|(c<<16) |
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275 | # else: |
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276 | # print "CSI sgr ignore",l,i |
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277 | # print 'sgr: %r %x'%(l,self.sgr) |
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278 | def csi_r(self,l): |
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279 | if len(l)<2: l=[0,self.height] |
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280 | self.st=min(self.height-1,l[0]-1) |
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281 | self.sb=min(self.height-1,l[1]-1) |
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282 | self.sb=max(self.st,self.sb) |
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283 | def csi_s(self,l): |
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284 | self.esc_save(0) |
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285 | def csi_u(self,l): |
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286 | self.esc_restore(0) |
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287 | def escape(self): |
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288 | e=self.buf |
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289 | if len(e)>32: |
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290 | # print "error %r"%e |
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291 | self.buf="" |
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292 | elif e in self.esc_seq: |
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293 | self.esc_seq[e](e) |
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294 | self.buf="" |
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295 | else: |
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296 | for r,f in self.esc_re: |
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297 | mo=r.match(e) |
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298 | if mo: |
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299 | f(e,mo) |
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300 | self.buf="" |
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301 | break |
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302 | # if self.buf=='': print "ESC %r\n"%e |
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303 | def write(self,s): |
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304 | for i in s: |
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305 | if len(self.buf) or (i in self.esc_seq): |
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306 | self.buf+=i |
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307 | self.escape() |
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308 | elif i == '\x1b': |
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309 | self.buf+=i |
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310 | else: |
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311 | self.echo(i) |
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312 | def read(self): |
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313 | b=self.outbuf |
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314 | self.outbuf="" |
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315 | return b |
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316 | def dump(self): |
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317 | r='' |
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318 | for i in self.scr: |
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319 | r+=chr(i&255) |
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320 | return r |
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321 | def dumplatin1(self): |
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322 | return self.dump().translate(self.trl1) |
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323 | def dumphtml(self,color=1,force=False): |
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324 | h=self.height |
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325 | w=self.width |
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326 | r="" |
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327 | span="" |
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328 | span_bg,span_fg=-1,-1 |
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329 | for i in range(h*w): |
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330 | q,c=divmod(self.scr[i],256) |
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331 | if color: |
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332 | bg,fg=divmod(q,256) |
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333 | else: |
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334 | bg,fg=0,7 |
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335 | if i==self.cy*w+self.cx: |
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336 | bg,fg=1,7 |
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337 | if (bg!=span_bg or fg!=span_fg or i==h*w-1): |
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338 | if len(span): |
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339 | r+='<span class="f%d b%d">%s</span>'%(span_fg,span_bg,cgi.escape(span.translate(self.trhtml))) |
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340 | span="" |
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341 | span_bg,span_fg=bg,fg |
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342 | span+=chr(c) |
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343 | if i%w==w-1: |
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344 | span+='\n' |
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345 | r='<?xml version="1.0" encoding="ISO-8859-1"?><pre class="term">%s</pre>'%r |
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346 | if self.last_html==r and not force: |
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347 | return '<?xml version="1.0"?><idem></idem>' |
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348 | else: |
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349 | self.last_html=r |
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350 | # print self |
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351 | return r |
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352 | def __repr__(self): |
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353 | d=self.dumplatin1() |
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354 | r="" |
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355 | for i in range(self.height): |
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356 | r+="|%s|\n"%d[self.width*i:self.width*(i+1)] |
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357 | return r |
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358 | |
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359 | class SynchronizedMethod: |
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360 | def __init__(self,lock,orig): |
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361 | self.lock=lock |
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362 | self.orig=orig |
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363 | def __call__(self,*l): |
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364 | self.lock.acquire() |
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365 | r=self.orig(*l) |
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366 | self.lock.release() |
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367 | return r |
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368 | |
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369 | class Multiplex: |
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370 | def __init__(self): |
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371 | self.proc={} |
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372 | self.lock=threading.RLock() |
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373 | self.thread=threading.Thread(target=self.loop) |
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374 | self.thread.daemon=True |
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375 | self.alive=1 |
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376 | # synchronize methods |
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377 | for name in ['create','fds','proc_read','proc_write','dump','die','run']: |
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378 | orig=getattr(self,name) |
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379 | setattr(self,name,SynchronizedMethod(self.lock,orig)) |
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380 | self.thread.start() |
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381 | def create(self,cmd,w=80,h=25): |
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382 | pid,fd=pty.fork() |
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383 | if pid==0: |
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384 | try: |
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385 | fdl=[int(i) for i in os.listdir('/proc/self/fd')] |
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386 | except OSError: |
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387 | fdl=range(256) |
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388 | for i in [i for i in fdl if i>2]: |
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389 | try: |
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390 | os.close(i) |
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391 | except OSError: |
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392 | pass |
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393 | env={} |
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394 | env["COLUMNS"]=str(w) |
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395 | env["LINES"]=str(h) |
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396 | env["TERM"]="linux" |
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397 | env["PATH"]=os.environ['PATH'] |
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398 | os.execvpe(cmd[0],cmd,env) |
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399 | else: |
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400 | fcntl.fcntl(fd, fcntl.F_SETFL, os.O_NONBLOCK) |
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401 | # python bug http://python.org/sf/1112949 on amd64 |
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402 | fcntl.ioctl(fd, struct.unpack('i',struct.pack('I',termios.TIOCSWINSZ))[0], struct.pack("HHHH",h,w,0,0)) |
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403 | self.proc[fd]={'pid':pid,'term':Terminal(w,h),'buf':'','time':time.time()} |
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404 | return fd |
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405 | def die(self): |
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406 | self.alive=0 |
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407 | def run(self): |
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408 | return self.alive |
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409 | def fds(self): |
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410 | return self.proc.keys() |
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411 | def proc_kill(self,fd): |
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412 | if fd in self.proc: |
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413 | self.proc[fd]['time']=0 |
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414 | t=time.time() |
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415 | for i in self.proc.keys(): |
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416 | t0=self.proc[i]['time'] |
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417 | if (t-t0)>120: |
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418 | try: |
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419 | os.close(i) |
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420 | os.kill(self.proc[i]['pid'],signal.SIGTERM) |
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421 | except (IOError,OSError): |
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422 | pass |
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423 | del self.proc[i] |
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424 | def proc_read(self,fd): |
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425 | try: |
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426 | t=self.proc[fd]['term'] |
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427 | t.write(os.read(fd,65536)) |
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428 | reply=t.read() |
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429 | if reply: |
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430 | os.write(fd,reply) |
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431 | self.proc[fd]['time']=time.time() |
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432 | except (KeyError,IOError,OSError): |
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433 | self.proc_kill(fd) |
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434 | def proc_write(self,fd,s): |
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435 | try: |
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436 | os.write(fd,s) |
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437 | except (IOError,OSError): |
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438 | self.proc_kill(fd) |
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439 | def dump(self,fd,color=1,force=False): |
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440 | try: |
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441 | return self.proc[fd]['term'].dumphtml(color, force) |
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442 | except KeyError: |
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443 | return False |
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444 | def loop(self): |
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445 | while self.run(): |
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446 | fds=self.fds() |
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447 | i,o,e=select.select(fds, [], [], 1.0) |
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448 | for fd in i: |
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449 | self.proc_read(fd) |
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450 | if len(i): |
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451 | time.sleep(0.002) |
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452 | for i in self.proc.keys(): |
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453 | try: |
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454 | os.close(i) |
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455 | os.kill(self.proc[i]['pid'],signal.SIGTERM) |
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456 | except (IOError,OSError): |
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457 | pass |
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458 | |
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459 | class AjaxTerm: |
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460 | def __init__(self,cmd=None,index_file='ajaxterm.html'): |
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461 | self.files={} |
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462 | for i in ['css','html','js']: |
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463 | for j in glob.glob('*.%s'%i): |
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464 | self.files[j]=file(j).read() |
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465 | self.files['index']=file(index_file).read() |
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466 | self.mime = mimetypes.types_map.copy() |
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467 | self.mime['.html']= 'text/html; charset=UTF-8' |
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468 | self.multi = Multiplex(cmd) |
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469 | self.session = {} |
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470 | def __call__(self, environ, start_response): |
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471 | req = qweb.QWebRequest(environ, start_response,session=None) |
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472 | if req.PATH_INFO.endswith('/u'): |
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473 | s=req.REQUEST["s"] |
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474 | k=req.REQUEST["k"] |
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475 | c=req.REQUEST["c"] |
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476 | w=req.REQUEST.int("w") |
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477 | h=req.REQUEST.int("h") |
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478 | if s in self.session: |
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479 | term=self.session[s] |
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480 | else: |
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481 | if not (w>2 and w<256 and h>2 and h<100): |
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482 | w,h=80,25 |
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483 | term=self.session[s]=self.multi.create(w,h) |
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484 | if k: |
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485 | self.multi.proc_write(term,k) |
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486 | time.sleep(0.002) |
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487 | dump=self.multi.dump(term,c) |
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488 | req.response_headers['Content-Type']='text/xml' |
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489 | if isinstance(dump,str): |
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490 | req.write(dump) |
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491 | req.response_gzencode=1 |
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492 | else: |
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493 | del self.session[s] |
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494 | req.write('<?xml version="1.0"?><idem></idem>') |
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495 | # print "sessions %r"%self.session |
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496 | else: |
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497 | n=os.path.basename(req.PATH_INFO) |
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498 | if n in self.files: |
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499 | req.response_headers['Content-Type'] = self.mime.get(os.path.splitext(n)[1].lower(), 'application/octet-stream') |
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500 | req.write(self.files[n]) |
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501 | else: |
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502 | req.response_headers['Content-Type'] = 'text/html; charset=UTF-8' |
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503 | req.write(self.files['index']) |
---|
504 | return req |
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505 | |
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506 | def main(): |
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507 | parser = optparse.OptionParser() |
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508 | parser.add_option("-p", "--port", dest="port", default="8022", help="Set the TCP port (default: 8022)") |
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509 | parser.add_option("-c", "--command", dest="cmd", default=None,help="set the command (default: /bin/login or ssh localhost)") |
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510 | parser.add_option("-l", "--log", action="store_true", dest="log",default=0,help="log requests to stderr (default: quiet mode)") |
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511 | parser.add_option("-d", "--daemon", action="store_true", dest="daemon", default=0, help="run as daemon in the background") |
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512 | parser.add_option("-P", "--pidfile",dest="pidfile",default="/var/run/ajaxterm.pid",help="set the pidfile (default: /var/run/ajaxterm.pid)") |
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513 | parser.add_option("-i", "--index", dest="index_file", default="ajaxterm.html",help="default index file (default: ajaxterm.html)") |
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514 | parser.add_option("-u", "--uid", dest="uid", help="Set the daemon's user id") |
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515 | (o, a) = parser.parse_args() |
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516 | if o.daemon: |
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517 | pid=os.fork() |
---|
518 | if pid == 0: |
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519 | #os.setsid() ? |
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520 | os.setpgrp() |
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521 | nullin = file('/dev/null', 'r') |
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522 | nullout = file('/dev/null', 'w') |
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523 | os.dup2(nullin.fileno(), sys.stdin.fileno()) |
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524 | os.dup2(nullout.fileno(), sys.stdout.fileno()) |
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525 | os.dup2(nullout.fileno(), sys.stderr.fileno()) |
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526 | if os.getuid()==0 and o.uid: |
---|
527 | try: |
---|
528 | os.setuid(int(o.uid)) |
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529 | except: |
---|
530 | os.setuid(pwd.getpwnam(o.uid).pw_uid) |
---|
531 | else: |
---|
532 | try: |
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533 | file(o.pidfile,'w+').write(str(pid)+'\n') |
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534 | except: |
---|
535 | pass |
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536 | print 'AjaxTerm at http://localhost:%s/ pid: %d' % (o.port,pid) |
---|
537 | sys.exit(0) |
---|
538 | else: |
---|
539 | print 'AjaxTerm at http://localhost:%s/' % o.port |
---|
540 | at=AjaxTerm(o.cmd,o.index_file) |
---|
541 | # f=lambda:os.system('firefox http://localhost:%s/&'%o.port) |
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542 | # qweb.qweb_wsgi_autorun(at,ip='localhost',port=int(o.port),threaded=0,log=o.log,callback_ready=None) |
---|
543 | try: |
---|
544 | qweb.QWebWSGIServer(at,ip='localhost',port=int(o.port),threaded=0,log=o.log).serve_forever() |
---|
545 | except KeyboardInterrupt,e: |
---|
546 | sys.excepthook(*sys.exc_info()) |
---|
547 | at.multi.die() |
---|
548 | |
---|
549 | if __name__ == '__main__': |
---|
550 | main() |
---|
551 | |
---|