Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/nm2def.py @ 49955:878d40468c4e legacy-trunk

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Issue #4384: Added logging integration with warnings module using captureWarnings(). This change includes a NullHandler which does nothing; it will be of use to library developers who want to avoid the "No handlers could be found for logger XXX" message which can appear if the library user doesn't configure logging.
author Vinay Sajip <vinay_sajip@yahoo.co.uk>
date Wed, 03 Dec 2008 23:22:58 +0000
parents 1d84bf5f9478
children 893a4dc17a91
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #! /usr/bin/env python
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2 """nm2def.py
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3
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4 Helpers to extract symbols from Unix libs and auto-generate
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5 Windows definition files from them. Depends on nm(1). Tested
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6 on Linux and Solaris only (-p option to nm is for Solaris only).
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7
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8 By Marc-Andre Lemburg, Aug 1998.
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9
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10 Additional notes: the output of nm is supposed to look like this:
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11
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12 acceler.o:
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13 000001fd T PyGrammar_AddAccelerators
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14 U PyGrammar_FindDFA
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15 00000237 T PyGrammar_RemoveAccelerators
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16 U _IO_stderr_
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17 U exit
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18 U fprintf
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19 U free
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20 U malloc
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21 U printf
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22
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23 grammar1.o:
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24 00000000 T PyGrammar_FindDFA
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25 00000034 T PyGrammar_LabelRepr
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26 U _PyParser_TokenNames
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27 U abort
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28 U printf
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29 U sprintf
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30
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31 ...
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32
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33 Even if this isn't the default output of your nm, there is generally an
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34 option to produce this format (since it is the original v7 Unix format).
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35
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36 """
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37 import os, sys
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38
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39 PYTHONLIB = 'libpython'+sys.version[:3]+'.a'
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40 PC_PYTHONLIB = 'Python'+sys.version[0]+sys.version[2]+'.dll'
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41 NM = 'nm -p -g %s' # For Linux, use "nm -g %s"
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42
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43 def symbols(lib=PYTHONLIB,types=('T','C','D')):
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44
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45 lines = os.popen(NM % lib).readlines()
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46 lines = [s.strip() for s in lines]
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47 symbols = {}
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48 for line in lines:
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49 if len(line) == 0 or ':' in line:
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50 continue
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51 items = line.split()
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52 if len(items) != 3:
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53 continue
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54 address, type, name = items
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55 if type not in types:
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56 continue
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57 symbols[name] = address,type
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58 return symbols
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59
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60 def export_list(symbols):
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61
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62 data = []
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63 code = []
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64 for name,(addr,type) in symbols.items():
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65 if type in ('C','D'):
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66 data.append('\t'+name)
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67 else:
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68 code.append('\t'+name)
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69 data.sort()
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70 data.append('')
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71 code.sort()
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72 return ' DATA\n'.join(data)+'\n'+'\n'.join(code)
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73
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74 # Definition file template
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75 DEF_TEMPLATE = """\
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76 EXPORTS
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77 %s
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78 """
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79
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80 # Special symbols that have to be included even though they don't
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81 # pass the filter
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82 SPECIALS = (
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83 )
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84
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85 def filter_Python(symbols,specials=SPECIALS):
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86
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87 for name in symbols.keys():
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88 if name[:2] == 'Py' or name[:3] == '_Py':
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89 pass
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90 elif name not in specials:
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91 del symbols[name]
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92
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93 def main():
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94
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95 s = symbols(PYTHONLIB)
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96 filter_Python(s)
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97 exports = export_list(s)
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98 f = sys.stdout # open('PC/python_nt.def','w')
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99 f.write(DEF_TEMPLATE % (exports))
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100 f.close()
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101
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102 if __name__ == '__main__':
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103 main()