| [34722ee] | 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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| [940cac0] | 8 | import commands
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| [34722ee] | 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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| [2d93f1f9] | 43 | sys.stdout.write("\n*** %s ***\n" % self.title)
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| [34722ee] | 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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| [beb39ee3] | 81 |
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| 82 | def menu(self, text, choices, button, defopt=None):
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| [994cf4b] | 83 | menu = []
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| 84 | for key, descr in choices:
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| 85 | txt = key + (45-len(key))*' ' + ': ' + descr
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| 86 | menu.append((key, txt))
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| 87 |
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| 88 | return self.choice(text, [button] + menu)
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| [34722ee] | 89 |
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| 90 | def choice(self, text, choices, defopt=None):
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| 91 | self.print_title()
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| 92 | while 1:
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| 93 | self._print_choice(text, choices, defopt)
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| 94 | inp = sys.stdin.readline()
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| 95 | if not inp:
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| 96 | raise EOFError
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| 97 | if not inp.strip():
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| 98 | if defopt is not None:
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| 99 | return choices[defopt][0]
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| 100 | continue
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| 101 | try:
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| 102 | number = int(inp.strip())
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| 103 | except ValueError:
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| 104 | continue
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| 105 | if number < 0 or number >= len(choices):
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| 106 | continue
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| 107 | return choices[number][0]
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| 108 |
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| 109 |
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| 110 | class Dialog(NoDialog):
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| 111 | def __init__(self):
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| 112 | NoDialog.__init__(self)
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| 113 | self.dlgcmd = os.environ.get('DIALOG','dialog')
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| [beb39ee3] | 114 | self.title = ''
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| 115 | self.backtitle = 'HelenOS Kernel Configuration'
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| [34722ee] | 116 |
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| 117 | if os.system('%s --print-maxsize >/dev/null 2>&1' % self.dlgcmd) != 0:
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| 118 | raise NotImplementedError
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| 119 |
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| 120 | def set_title(self,text):
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| 121 | self.title = text
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| 122 |
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| 123 | def calldlg(self,*args,**kw):
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| [090e7ea1] | 124 | "Wrapper for calling 'dialog' program"
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| [34722ee] | 125 | indesc, outdesc = os.pipe()
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| 126 | pid = os.fork()
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| 127 | if not pid:
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| 128 | os.close(2)
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| 129 | os.dup(outdesc)
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| 130 | os.close(indesc)
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| 131 |
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| [beb39ee3] | 132 | dlgargs = [self.dlgcmd,'--title',self.title,
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| 133 | '--backtitle', self.backtitle]
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| [34722ee] | 134 | for key,val in kw.items():
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| 135 | dlgargs.append('--'+key)
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| 136 | dlgargs.append(val)
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| 137 | dlgargs += args
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| 138 | os.execlp(self.dlgcmd,*dlgargs)
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| 139 |
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| 140 | os.close(outdesc)
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| [839470f] | 141 |
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| 142 | try:
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| 143 | errout = os.fdopen(indesc,'r')
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| 144 | data = errout.read()
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| 145 | errout.close()
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| 146 | pid,status = os.wait()
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| 147 | except:
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| 148 | os.system('reset') # Reset terminal
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| 149 | raise
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| 150 |
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| [34722ee] | 151 | if not os.WIFEXITED(status):
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| [839470f] | 152 | os.system('reset') # Reset terminal
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| [34722ee] | 153 | raise EOFError
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| [839470f] | 154 |
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| [34722ee] | 155 | status = os.WEXITSTATUS(status)
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| 156 | if status == 255:
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| 157 | raise EOFError
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| 158 | return status,data
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| 159 |
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| 160 | def yesno(self, text, default=None):
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| [839470f] | 161 | if text[-1] not in ('?',':'):
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| 162 | text = text + ':'
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| [34722ee] | 163 | width = '50'
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| 164 | height = '5'
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| 165 | if len(text) < 48:
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| 166 | text = ' '*int(((48-len(text))/2)) + text
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| 167 | else:
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| 168 | width = '0'
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| 169 | height = '0'
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| 170 | if default == 'n':
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| 171 | res,data = self.calldlg('--defaultno','--yesno',text,height,width)
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| 172 | else:
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| 173 | res,data = self.calldlg('--yesno',text,height,width)
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| 174 |
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| 175 | if res == 0:
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| 176 | return 'y'
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| 177 | return 'n'
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| [beb39ee3] | 178 |
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| 179 | def menu(self, text, choices, button, defopt=None):
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| 180 | text = text + ':'
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| 181 | width = '70'
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| 182 | height = str(8 + len(choices))
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| 183 | args = []
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| 184 | for key,val in choices:
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| 185 | args.append(key)
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| 186 | args.append(val)
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| 187 |
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| 188 | kw = {}
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| 189 | if defopt:
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| 190 | kw['default-item'] = choices[defopt][0]
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| [ac0cb2a] | 191 | res,data = self.calldlg('--ok-label','Change',
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| 192 | '--extra-label',button[1],
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| [45ab770] | 193 | '--extra-button',
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| [beb39ee3] | 194 | '--menu',text,height,width,
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| 195 | str(len(choices)),*args,**kw)
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| [45ab770] | 196 | if res == 3:
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| [beb39ee3] | 197 | return button[0]
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| [45ab770] | 198 | if res == 1: # Cancel
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| 199 | sys.exit(1)
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| [beb39ee3] | 200 | elif res:
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| 201 | print data
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| 202 | raise EOFError
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| 203 | return data
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| [34722ee] | 204 |
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| 205 | def choice(self, text, choices, defopt=None):
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| 206 | text = text + ':'
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| 207 | width = '50'
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| 208 | height = str(8 + len(choices))
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| 209 | args = []
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| 210 | for key,val in choices:
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| 211 | args.append(key)
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| 212 | args.append(val)
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| 213 |
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| 214 | kw = {}
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| 215 | if defopt:
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| 216 | kw['default-item'] = choices[defopt][0]
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| 217 | res,data = self.calldlg('--nocancel','--menu',text,height,width,
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| 218 | str(len(choices)),*args, **kw)
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| 219 | if res:
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| 220 | print data
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| 221 | raise EOFError
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| 222 | return data
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| 223 |
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| [795ff98] | 224 | def read_defaults(fname,defaults):
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| [090e7ea1] | 225 | "Read saved values from last configuration run"
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| [34722ee] | 226 | f = file(fname,'r')
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| 227 | for line in f:
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| [795ff98] | 228 | res = re.match(r'^(?:#!# )?([^#]\w*)\s*=\s*(.*?)\s*$', line)
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| [34722ee] | 229 | if res:
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| 230 | defaults[res.group(1)] = res.group(2)
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| 231 | f.close()
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| [795ff98] | 232 |
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| 233 | def check_condition(text, defaults):
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| [9371c30] | 234 | result = True
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| 235 | conds = text.split('&')
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| 236 | for cond in conds:
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| 237 | if cond.startswith('(') and cond.endswith(')'):
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| 238 | cond = cond[1:-1]
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| 239 | if not check_dnf(cond, defaults):
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| 240 | return False
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| 241 | return True
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| 242 |
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| 243 | def check_dnf(text, defaults):
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| 244 | """
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| 245 | Check that the condition specified on input line is True
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| 246 |
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| 247 | only CNF is supported
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| 248 | """
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| [795ff98] | 249 | conds = text.split('|')
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| 250 | for cond in conds:
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| [9371c30] | 251 | res = re.match(r'^(.*?)(!?=)(.*)$', cond)
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| 252 | if not res:
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| 253 | raise RuntimeError("Invalid condition: %s" % cond)
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| 254 | condname = res.group(1)
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| 255 | oper = res.group(2)
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| 256 | condval = res.group(3)
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| [795ff98] | 257 | if not defaults.has_key(condname):
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| 258 | raise RuntimeError("Condition var %s does not exist: %s" % \
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| [9371c30] | 259 | (condname,text))
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| 260 |
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| 261 | if oper=='=' and condval == defaults[condname]:
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| [795ff98] | 262 | return True
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| [9371c30] | 263 | if oper == '!=' and condval != defaults[condname]:
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| [795ff98] | 264 | return True
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| 265 | return False
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| [34722ee] | 266 |
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| [beb39ee3] | 267 | def parse_config(input, output, dlg, defaults={}, askonly=None):
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| [090e7ea1] | 268 | "Parse configuration file and create Makefile.config on the fly"
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| [9d5e23c] | 269 | def ask_the_question(dialog):
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| [253f8590] | 270 | "Ask question based on the type of variables to ask"
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| 271 | # This is quite a hack, this thingy is written just to
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| 272 | # have access to local variables..
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| 273 | if vartype == 'y/n':
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| [9d5e23c] | 274 | return dialog.yesno(comment, default)
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| [253f8590] | 275 | elif vartype == 'n/y':
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| [9d5e23c] | 276 | return dialog.noyes(comment, default)
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| [253f8590] | 277 | elif vartype == 'choice':
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| 278 | defopt = None
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| 279 | if default is not None:
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| 280 | for i,(key,val) in enumerate(choices):
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| 281 | if key == default:
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| 282 | defopt = i
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| 283 | break
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| [9d5e23c] | 284 | return dialog.choice(comment, choices, defopt)
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| [253f8590] | 285 | else:
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| 286 | raise RuntimeError("Bad method: %s" % vartype)
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| 287 |
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| 288 |
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| [34722ee] | 289 | f = file(input, 'r')
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| 290 | outf = file(output, 'w')
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| 291 |
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| 292 | outf.write('#########################################\n')
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| 293 | outf.write('## AUTO-GENERATED FILE, DO NOT EDIT!!! ##\n')
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| 294 | outf.write('#########################################\n\n')
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| 295 |
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| [beb39ee3] | 296 | asked_names = []
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| 297 |
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| [34722ee] | 298 | comment = ''
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| 299 | default = None
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| 300 | choices = []
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| [9371c30] | 301 | for line in f:
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| 302 | if line.startswith('%'):
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| 303 | res = re.match(r'^%\s*(?:\[(.*?)\])?\s*(.*)$', line)
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| 304 | if not res:
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| 305 | raise RuntimeError('Invalid command: %s' % line)
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| 306 | if res.group(1):
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| 307 | if not check_condition(res.group(1), defaults):
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| 308 | continue
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| 309 | args = res.group(2).strip().split(' ')
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| 310 | cmd = args[0].lower()
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| 311 | args = args[1:]
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| [beb39ee3] | 312 | if cmd == 'saveas':
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| [9371c30] | 313 | outf.write('%s = %s\n' % (args[1],defaults[args[0]]))
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| [54257ba] | 314 | elif cmd == 'shellcmd':
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| 315 | varname = args[0]
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| 316 | args = args[1:]
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| 317 | for i,arg in enumerate(args):
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| 318 | if arg.startswith('$'):
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| 319 | args[i] = defaults[arg[1:]]
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| [9d5e23c] | 320 | data,status = commands.getstatusoutput(' '.join(args))
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| 321 | if status:
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| [54257ba] | 322 | raise RuntimeError('Error running: %s' % ' '.join(args))
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| [9d5e23c] | 323 | outf.write('%s = %s\n' % (varname,data.strip()))
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| [9371c30] | 324 | continue
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| 325 |
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| [34722ee] | 326 | if line.startswith('!'):
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| [090e7ea1] | 327 | # Ask a question
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| [795ff98] | 328 | res = re.search(r'!\s*(?:\[(.*?)\])?\s*([^\s]+)\s*\((.*)\)\s*$', line)
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| [34722ee] | 329 | if not res:
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| 330 | raise RuntimeError("Weird line: %s" % line)
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| [795ff98] | 331 | varname = res.group(2)
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| 332 | vartype = res.group(3)
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| [34722ee] | 333 |
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| 334 | default = defaults.get(varname,None)
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| [beb39ee3] | 335 |
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| [795ff98] | 336 | if res.group(1):
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| 337 | if not check_condition(res.group(1), defaults):
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| 338 | if default is not None:
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| 339 | outf.write('#!# %s = %s\n' % (varname, default))
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| [9371c30] | 340 | # Clear cumulated values
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| 341 | comment = ''
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| 342 | default = None
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| 343 | choices = []
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| [795ff98] | 344 | continue
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| [beb39ee3] | 345 |
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| 346 | asked_names.append((varname,comment))
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| 347 |
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| [253f8590] | 348 | if default is None or not askonly or askonly == varname:
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| [9d5e23c] | 349 | default = ask_the_question(dlg)
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| 350 | else:
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| 351 | default = ask_the_question(DefaultDialog(dlg))
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| [795ff98] | 352 |
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| [253f8590] | 353 | outf.write('%s = %s\n' % (varname, default))
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| [795ff98] | 354 | # Remeber the selected value
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| [253f8590] | 355 | defaults[varname] = default
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| [34722ee] | 356 | # Clear cumulated values
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| 357 | comment = ''
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| 358 | default = None
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| 359 | choices = []
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| 360 | continue
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| 361 |
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| 362 | if line.startswith('@'):
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| [090e7ea1] | 363 | # Add new line into the 'choice array'
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| [795ff98] | 364 | res = re.match(r'@\s*(?:\[(.*?)\])?\s*"(.*?)"\s*(.*)$', line)
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| [34722ee] | 365 | if not res:
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| 366 | raise RuntimeError("Bad line: %s" % line)
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| [795ff98] | 367 | if res.group(1):
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| 368 | if not check_condition(res.group(1),defaults):
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| 369 | continue
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| 370 | choices.append((res.group(2), res.group(3)))
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| [34722ee] | 371 | continue
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| [090e7ea1] | 372 |
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| 373 | # All other things print to output file
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| [34722ee] | 374 | outf.write(line)
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| 375 | if re.match(r'^#[^#]', line):
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| [090e7ea1] | 376 | # Last comment before question will be displayed to the user
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| [34722ee] | 377 | comment = line[1:].strip()
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| [2d93f1f9] | 378 | elif line.startswith('## '):
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| [090e7ea1] | 379 | # Set title of the dialog window
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| [34722ee] | 380 | dlg.set_title(line[2:].strip())
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| [940cac0] | 381 |
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| 382 | outf.write('\n')
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| 383 | outf.write('REVISION=%s\n' % commands.getoutput('svnversion . 2> /dev/null'))
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| 384 | outf.write('TIMESTAMP=%s\n' % commands.getoutput('date "+%Y-%m-%d %H:%M:%S"'))
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| [34722ee] | 385 | outf.close()
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| 386 | f.close()
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| [beb39ee3] | 387 | return asked_names
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| [34722ee] | 388 |
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| 389 | def main():
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| [9371c30] | 390 | defaults = {}
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| [34722ee] | 391 | try:
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| 392 | dlg = Dialog()
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| 393 | except NotImplementedError:
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| 394 | dlg = NoDialog()
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| 395 |
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| [9371c30] | 396 | if len(sys.argv) == 2 and sys.argv[1]=='default':
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| [beb39ee3] | 397 | defmode = True
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| 398 | else:
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| 399 | defmode = False
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| [34722ee] | 400 |
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| [beb39ee3] | 401 | # Default run will update the configuration file
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| 402 | # with newest options
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| [34722ee] | 403 | if os.path.exists(OUTPUT):
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| [795ff98] | 404 | read_defaults(OUTPUT, defaults)
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| [994cf4b] | 405 |
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| 406 | # Dry run only with defaults
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| [beb39ee3] | 407 | varnames = parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults)
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| 408 | # If not in default mode, present selection of all possibilities
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| 409 | if not defmode:
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| 410 | defopt = 0
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| 411 | while 1:
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| [994cf4b] | 412 | # varnames contains variable names that were in the
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| 413 | # last question set
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| [beb39ee3] | 414 | choices = [ (x[1],defaults[x[0]]) for x in varnames ]
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| 415 | res = dlg.menu('Configuration',choices,('save','Save'),defopt)
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| 416 | if res == 'save':
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| 417 | parse_config(INPUT, TMPOUTPUT, DefaultDialog(dlg), defaults)
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| 418 | break
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| 419 | # transfer description back to varname
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| 420 | for i,(vname,descr) in enumerate(varnames):
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| 421 | if res == descr:
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| 422 | defopt = i
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| 423 | break
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| [994cf4b] | 424 | # Ask the user a simple question, produce output
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| 425 | # as if the user answered all the other questions
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| 426 | # with default answer
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| [beb39ee3] | 427 | varnames = parse_config(INPUT, TMPOUTPUT, dlg, defaults,
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| 428 | askonly=varnames[i][0])
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| 429 |
|
|---|
| 430 |
|
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| [34722ee] | 431 | if os.path.exists(OUTPUT):
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| 432 | os.unlink(OUTPUT)
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| 433 | os.rename(TMPOUTPUT, OUTPUT)
|
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| [839470f] | 434 |
|
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| 435 | if not defmode and dlg.yesno('Rebuild kernel?') == 'y':
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| 436 | os.execlp('make','make','clean','all')
|
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| [34722ee] | 437 |
|
|---|
| 438 | if __name__ == '__main__':
|
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| 439 | main()
|
|---|
