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