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Rev | Author | Line No. | Line |
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708 | decky | 1 | #!/usr/bin/env python |
2 | """ |
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1651 | palkovsky | 3 | Kernel configuration script |
708 | decky | 4 | """ |
5 | import sys |
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6 | import os |
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7 | import re |
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8 | import commands |
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9 | |||
1651 | palkovsky | 10 | INPUT = 'kernel.config' |
708 | decky | 11 | OUTPUT = 'Makefile.config' |
12 | TMPOUTPUT = 'Makefile.config.tmp' |
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13 | |||
14 | class DefaultDialog: |
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15 | "Wrapper dialog that tries to return default values" |
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16 | def __init__(self, dlg): |
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17 | self.dlg = dlg |
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18 | |||
19 | def set_title(self,text): |
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20 | self.dlg.set_title(text) |
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21 | |||
22 | def yesno(self, text, default=None): |
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23 | if default is not None: |
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24 | return default |
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25 | return self.dlg.yesno(text, default) |
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26 | def noyes(self, text, default=None): |
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27 | if default is not None: |
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28 | return default |
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29 | return self.dlg.noyes(text, default) |
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30 | |||
31 | def choice(self, text, choices, defopt=None): |
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32 | if defopt is not None: |
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33 | return choices[defopt][0] |
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34 | return self.dlg.choice(text, choices, defopt) |
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35 | |||
36 | class NoDialog: |
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37 | def __init__(self): |
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38 | self.printed = None |
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39 | self.title = 'HelenOS Configuration' |
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40 | |||
41 | def print_title(self): |
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42 | if not self.printed: |
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43 | sys.stdout.write("\n*** %s ***\n" % self.title) |
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44 | self.printed = True |
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45 | |||
46 | def set_title(self, text): |
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47 | self.title = text |
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48 | self.printed = False |
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49 | |||
50 | def noyes(self, text, default=None): |
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51 | if not default: |
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52 | default = 'n' |
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53 | return self.yesno(text, default) |
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54 | |||
55 | def yesno(self, text, default=None): |
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56 | self.print_title() |
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57 | |||
58 | if default != 'n': |
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59 | default = 'y' |
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60 | while 1: |
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61 | sys.stdout.write("%s (y/n)[%s]: " % (text,default)) |
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62 | inp = sys.stdin.readline() |
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63 | if not inp: |
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64 | raise EOFError |
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65 | inp = inp.strip().lower() |
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66 | if not inp: |
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67 | return default |
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68 | if inp == 'y': |
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69 | return 'y' |
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70 | elif inp == 'n': |
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71 | return 'n' |
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72 | |||
73 | def _print_choice(self, text, choices, defopt): |
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74 | sys.stdout.write('%s:\n' % text) |
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75 | for i,(text,descr) in enumerate(choices): |
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76 | sys.stdout.write('\t%2d. %s\n' % (i, descr)) |
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77 | if defopt is not None: |
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78 | sys.stdout.write('Enter choice number[%d]: ' % defopt) |
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79 | else: |
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80 | sys.stdout.write('Enter choice number: ') |
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81 | |||
82 | def menu(self, text, choices, button, defopt=None): |
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83 | self.title = 'Main menu' |
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84 | menu = [] |
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85 | for key, descr in choices: |
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86 | txt = key + (45-len(key))*' ' + ': ' + descr |
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87 | menu.append((key, txt)) |
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88 | |||
89 | return self.choice(text, [button] + menu) |
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90 | |||
91 | def choice(self, text, choices, defopt=None): |
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92 | self.print_title() |
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93 | while 1: |
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94 | self._print_choice(text, choices, defopt) |
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95 | inp = sys.stdin.readline() |
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96 | if not inp: |
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97 | raise EOFError |
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98 | if not inp.strip(): |
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99 | if defopt is not None: |
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100 | return choices[defopt][0] |
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101 | continue |
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102 | try: |
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103 | number = int(inp.strip()) |
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104 | except ValueError: |
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105 | continue |
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106 | if number < 0 or number >= len(choices): |
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107 | continue |
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108 | return choices[number][0] |
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109 | |||
110 | |||
1651 | palkovsky | 111 | def eof_checker(fnc): |
112 | def wrapper(self, *args, **kw): |
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113 | try: |
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114 | return fnc(self, *args, **kw) |
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115 | except EOFError: |
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116 | return getattr(self.bckdialog,fnc.func_name)(*args, **kw) |
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117 | return wrapper |
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118 | |||
708 | decky | 119 | class Dialog(NoDialog): |
120 | def __init__(self): |
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121 | NoDialog.__init__(self) |
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122 | self.dlgcmd = os.environ.get('DIALOG','dialog') |
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123 | self.title = '' |
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1651 | palkovsky | 124 | self.backtitle = 'HelenOS Kernel Configuration' |
708 | decky | 125 | |
126 | if os.system('%s --print-maxsize >/dev/null 2>&1' % self.dlgcmd) != 0: |
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127 | raise NotImplementedError |
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1651 | palkovsky | 128 | |
129 | self.bckdialog = NoDialog() |
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708 | decky | 130 | |
131 | def set_title(self,text): |
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132 | self.title = text |
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1651 | palkovsky | 133 | self.bckdialog.set_title(text) |
708 | decky | 134 | |
135 | def calldlg(self,*args,**kw): |
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136 | "Wrapper for calling 'dialog' program" |
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137 | indesc, outdesc = os.pipe() |
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138 | pid = os.fork() |
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139 | if not pid: |
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140 | os.close(2) |
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141 | os.dup(outdesc) |
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142 | os.close(indesc) |
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143 | |||
144 | dlgargs = [self.dlgcmd,'--title',self.title, |
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145 | '--backtitle', self.backtitle] |
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146 | for key,val in kw.items(): |
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147 | dlgargs.append('--'+key) |
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148 | dlgargs.append(val) |
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149 | dlgargs += args |
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150 | os.execlp(self.dlgcmd,*dlgargs) |
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151 | |||
152 | os.close(outdesc) |
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153 | |||
154 | try: |
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155 | errout = os.fdopen(indesc,'r') |
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156 | data = errout.read() |
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157 | errout.close() |
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158 | pid,status = os.wait() |
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159 | except: |
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160 | os.system('reset') # Reset terminal |
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161 | raise |
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162 | |||
163 | if not os.WIFEXITED(status): |
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164 | os.system('reset') # Reset terminal |
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165 | raise EOFError |
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166 | |||
167 | status = os.WEXITSTATUS(status) |
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168 | if status == 255: |
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169 | raise EOFError |
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170 | return status,data |
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171 | |||
172 | def yesno(self, text, default=None): |
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173 | if text[-1] not in ('?',':'): |
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174 | text = text + ':' |
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175 | width = '50' |
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176 | height = '5' |
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177 | if len(text) < 48: |
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178 | text = ' '*int(((48-len(text))/2)) + text |
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179 | else: |
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180 | width = '0' |
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181 | height = '0' |
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182 | if default == 'n': |
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183 | res,data = self.calldlg('--defaultno','--yesno',text,height,width) |
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184 | else: |
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185 | res,data = self.calldlg('--yesno',text,height,width) |
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186 | |||
187 | if res == 0: |
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188 | return 'y' |
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189 | return 'n' |
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1651 | palkovsky | 190 | yesno = eof_checker(yesno) |
708 | decky | 191 | |
192 | def menu(self, text, choices, button, defopt=None): |
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193 | self.title = 'Main menu' |
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194 | text = text + ':' |
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195 | width = '70' |
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196 | height = str(8 + len(choices)) |
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197 | args = [] |
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198 | for key,val in choices: |
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199 | args.append(key) |
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200 | args.append(val) |
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201 | |||
202 | kw = {} |
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203 | if defopt: |
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204 | kw['default-item'] = choices[defopt][0] |
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205 | res,data = self.calldlg('--ok-label','Change', |
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206 | '--extra-label',button[1], |
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207 | '--extra-button', |
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208 | '--menu',text,height,width, |
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209 | str(len(choices)),*args,**kw) |
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210 | if res == 3: |
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211 | return button[0] |
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212 | if res == 1: # Cancel |
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213 | sys.exit(1) |
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214 | elif res: |
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215 | print data |
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216 | raise EOFError |
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217 | return data |
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1651 | palkovsky | 218 | menu = eof_checker(menu) |
708 | decky | 219 | |
220 | def choice(self, text, choices, defopt=None): |
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221 | text = text + ':' |
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222 | width = '50' |
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223 | height = str(8 + len(choices)) |
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224 | args = [] |
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225 | for key,val in choices: |
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226 | args.append(key) |
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227 | args.append(val) |
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228 | |||
229 | kw = {} |
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230 | if defopt: |
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231 | kw['default-item'] = choices[defopt][0] |
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232 | res,data = self.calldlg('--nocancel','--menu',text,height,width, |
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233 | str(len(choices)),*args, **kw) |
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234 | if res: |
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235 | print data |
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236 | raise EOFError |
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237 | return data |
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1651 | palkovsky | 238 | choice = eof_checker(choice) |
708 | decky | 239 | |
240 | def read_defaults(fname,defaults): |
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241 | "Read saved values from last configuration run" |
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242 | f = file(fname,'r') |
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243 | for line in f: |
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244 | res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line) |
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245 | if res: |
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246 | defaults[res.group(1)] = res.group(2) |
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247 | f.close() |
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248 | |||
249 | def check_condition(text, defaults, asked_names): |
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250 | seen_vars = [ x[0] for x in asked_names ] |
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251 | ctype = 'cnf' |
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252 | if ')|' in text or '|(' in text: |
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253 | ctype = 'dnf' |
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254 | |||
255 | if ctype == 'cnf': |
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256 | conds = text.split('&') |
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257 | else: |
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258 | conds = text.split('|') |
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259 | |||
260 | for cond in conds: |
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261 | if cond.startswith('(') and cond.endswith(')'): |
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262 | cond = cond[1:-1] |
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263 | |||
264 | inside = check_inside(cond, defaults, ctype, seen_vars) |
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265 | |||
266 | if ctype == 'cnf' and not inside: |
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267 | return False |
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268 | if ctype == 'dnf' and inside: |
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269 | return True |
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270 | |||
271 | if ctype == 'cnf': |
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272 | return True |
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273 | return False |
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274 | |||
275 | def check_inside(text, defaults, ctype, seen_vars): |
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276 | """ |
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277 | Check that the condition specified on input line is True |
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278 | |||
279 | only CNF is supported |
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280 | """ |
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281 | if ctype == 'cnf': |
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282 | conds = text.split('|') |
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283 | else: |
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284 | conds = text.split('&') |
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285 | for cond in conds: |
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286 | res = re.match(r'^(.*?)(!?=)(.*)$', cond) |
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287 | if not res: |
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288 | raise RuntimeError("Invalid condition: %s" % cond) |
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289 | condname = res.group(1) |
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290 | oper = res.group(2) |
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291 | condval = res.group(3) |
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292 | if condname not in seen_vars: |
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293 | varval = '' |
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294 | ## raise RuntimeError("Variable %s not defined before being asked." %\ |
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295 | ## condname) |
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296 | elif not defaults.has_key(condname): |
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297 | raise RuntimeError("Condition var %s does not exist: %s" % \ |
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298 | (condname,text)) |
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299 | else: |
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300 | varval = defaults[condname] |
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301 | if ctype == 'cnf': |
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302 | if oper == '=' and condval == varval: |
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303 | return True |
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304 | if oper == '!=' and condval != varval: |
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305 | return True |
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306 | else: |
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307 | if oper== '=' and condval != varval: |
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308 | return False |
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309 | if oper== '!=' and condval == varval: |
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310 | return False |
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311 | if ctype=='cnf': |
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312 | return False |
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313 | return True |
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314 | |||
315 | def parse_config(input, output, dlg, defaults={}, askonly=None): |
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316 | "Parse configuration file and create Makefile.config on the fly" |
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317 | def ask_the_question(dialog): |
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318 | "Ask question based on the type of variables to ask" |
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319 | # This is quite a hack, this thingy is written just to |
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320 | # have access to local variables.. |
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321 | if vartype == 'y/n': |
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322 | return dialog.yesno(comment, default) |
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323 | elif vartype == 'n/y': |
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324 | return dialog.noyes(comment, default) |
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325 | elif vartype == 'choice': |
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326 | defopt = None |
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327 | if default is not None: |
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328 | for i,(key,val) in enumerate(choices): |
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329 | if key == default: |
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330 | defopt = i |
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331 | break |
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332 | return dialog.choice(comment, choices, defopt) |
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333 | else: |
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334 | raise RuntimeError("Bad method: %s" % vartype) |
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335 | |||
336 | |||
337 | f = file(input, 'r') |
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338 | outf = file(output, 'w') |
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339 | |||
340 | outf.write('#########################################\n') |
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341 | outf.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n') |
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342 | outf.write('#########################################\n\n') |
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343 | |||
344 | asked_names = [] |
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345 | |||
346 | comment = '' |
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347 | default = None |
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348 | choices = [] |
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349 | for line in f: |
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350 | if line.startswith('%'): |
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351 | res = re.match(r'^%\s*(?:\[(.*?)\])?\s*(.*)$', line) |
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352 | if not res: |
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353 | raise RuntimeError('Invalid command: %s' % line) |
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354 | if res.group(1): |
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355 | if not check_condition(res.group(1), defaults, |
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356 | asked_names): |
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357 | continue |
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358 | args = res.group(2).strip().split(' ') |
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359 | cmd = args[0].lower() |
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360 | args = args[1:] |
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361 | if cmd == 'saveas': |
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362 | outf.write('%s = %s\n' % (args[1],defaults[args[0]])) |
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363 | elif cmd == 'shellcmd': |
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364 | varname = args[0] |
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365 | args = args[1:] |
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366 | for i,arg in enumerate(args): |
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367 | if arg.startswith('$'): |
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368 | args[i] = defaults[arg[1:]] |
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369 | data,status = commands.getstatusoutput(' '.join(args)) |
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370 | if status: |
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371 | raise RuntimeError('Error running: %s' % ' '.join(args)) |
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372 | outf.write('%s = %s\n' % (varname,data.strip())) |
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373 | continue |
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374 | |||
375 | if line.startswith('!'): |
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376 | # Ask a question |
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377 | res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line) |
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378 | if not res: |
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379 | raise RuntimeError("Weird line: %s" % line) |
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380 | varname = res.group(2) |
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381 | vartype = res.group(3) |
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382 | |||
383 | default = defaults.get(varname,None) |
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384 | |||
385 | if res.group(1): |
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386 | if not check_condition(res.group(1), defaults, |
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387 | asked_names): |
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388 | if default is not None: |
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389 | outf.write('#!# %s = %s\n' % (varname, default)) |
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390 | # Clear cumulated values |
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391 | comment = '' |
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392 | default = None |
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393 | choices = [] |
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394 | continue |
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395 | |||
396 | asked_names.append((varname,comment)) |
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397 | |||
398 | if default is None or not askonly or askonly == varname: |
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399 | default = ask_the_question(dlg) |
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400 | else: |
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401 | default = ask_the_question(DefaultDialog(dlg)) |
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402 | |||
403 | outf.write('%s = %s\n' % (varname, default)) |
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404 | # Remeber the selected value |
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405 | defaults[varname] = default |
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406 | # Clear cumulated values |
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407 | comment = '' |
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408 | default = None |
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409 | choices = [] |
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410 | continue |
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411 | |||
412 | if line.startswith('@'): |
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413 | # Add new line into the 'choice array' |
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414 | res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line) |
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415 | if not res: |
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416 | raise RuntimeError("Bad line: %s" % line) |
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417 | if res.group(1): |
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418 | if not check_condition(res.group(1),defaults, |
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419 | asked_names): |
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420 | continue |
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421 | choices.append((res.group(2), res.group(3))) |
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422 | continue |
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423 | |||
424 | # All other things print to output file |
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425 | outf.write(line) |
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426 | if re.match(r'^#[^#]', line): |
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427 | # Last comment before question will be displayed to the user |
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428 | comment = line[1:].strip() |
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429 | elif line.startswith('## '): |
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430 | # Set title of the dialog window |
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431 | dlg.set_title(line[2:].strip()) |
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432 | |||
433 | outf.write('\n') |
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434 | outf.write('REVISION = %s\n' % commands.getoutput('svnversion . 2> /dev/null')) |
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435 | outf.write('TIMESTAMP = %s\n' % commands.getoutput('date "+%Y-%m-%d %H:%M:%S"')) |
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436 | outf.close() |
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437 | f.close() |
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438 | return asked_names |
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439 | |||
440 | def main(): |
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441 | defaults = {} |
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442 | try: |
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443 | dlg = Dialog() |
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444 | except NotImplementedError: |
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445 | dlg = NoDialog() |
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446 | |||
447 | if len(sys.argv) >= 2 and sys.argv[1]=='default': |
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448 | defmode = True |
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449 | else: |
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450 | defmode = False |
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451 | |||
452 | # Default run will update the configuration file |
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453 | # with newest options |
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454 | if os.path.exists(OUTPUT): |
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455 | read_defaults(OUTPUT, defaults) |
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456 | |||
457 | # Get ARCH from command line if specified |
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458 | if len(sys.argv) >= 3: |
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459 | defaults['ARCH'] = sys.argv[2] |
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460 | |||
461 | # Dry run only with defaults |
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462 | varnames = parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults) |
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463 | # If not in default mode, present selection of all possibilities |
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464 | if not defmode: |
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465 | defopt = 0 |
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466 | while 1: |
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467 | # varnames contains variable names that were in the |
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468 | # last question set |
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469 | choices = [ (x[1],defaults[x[0]]) for x in varnames ] |
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470 | res = dlg.menu('Configuration',choices,('save','Save'),defopt) |
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471 | if res == 'save': |
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472 | parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults) |
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473 | break |
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474 | # transfer description back to varname |
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475 | for i,(vname,descr) in enumerate(varnames): |
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476 | if res == descr: |
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477 | defopt = i |
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478 | break |
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479 | # Ask the user a simple question, produce output |
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480 | # as if the user answered all the other questions |
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481 | # with default answer |
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482 | varnames = parse_config(INPUT, TMPOUTPUT, dlg, defaults, |
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483 | askonly=varnames[i][0]) |
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484 | |||
485 | |||
486 | if os.path.exists(OUTPUT): |
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487 | os.unlink(OUTPUT) |
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488 | os.rename(TMPOUTPUT, OUTPUT) |
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489 | |||
1651 | palkovsky | 490 | if not defmode and dlg.yesno('Rebuild kernel?') == 'y': |
708 | decky | 491 | os.execlp('make','make','clean','build') |
492 | |||
493 | if __name__ == '__main__': |
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494 | main() |