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