Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/h2py.py @ 8831:00a6bb65ff29 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Getting rid of this ancient stuff.
author Guido van Rossum <guido@python.org>
date Wed, 05 Aug 1998 21:10:09 +0000
parents 9a57ca229681
children 2cd58a61b051
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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73758db2f464 /usr/local/bin/python -> /usr/bin/env python
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1 #! /usr/bin/env python
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2
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3 # Read #define's and translate to Python code.
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4 # Handle #include statements.
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5 # Handle #define macros with one argument.
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6 # Anything that isn't recognized or doesn't translate into valid
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7 # Python is ignored.
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8
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9 # Without filename arguments, acts as a filter.
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10 # If one or more filenames are given, output is written to corresponding
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11 # filenames in the local directory, translated to all uppercase, with
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12 # the extension replaced by ".py".
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13
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14 # By passing one or more options of the form "-i regular_expression"
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15 # you can specify additional strings to be ignored. This is useful
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16 # e.g. to ignore casts to u_long: simply specify "-i '(u_long)'".
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17
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18 # XXX To do:
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19 # - turn trailing C comments into Python comments
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20 # - turn C Boolean operators "&& || !" into Python "and or not"
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21 # - what to do about #if(def)?
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22 # - what to do about macros with multiple parameters?
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23
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24 import sys, regex, regsub, string, getopt, os
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25
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26 p_define = regex.compile('^[\t ]*#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)[\t ]+')
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27
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28 p_macro = regex.compile(
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29 '^[\t ]*#[\t ]*define[\t ]+'
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30 '\([a-zA-Z0-9_]+\)(\([_a-zA-Z][_a-zA-Z0-9]*\))[\t ]+')
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31
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32 p_include = regex.compile('^[\t ]*#[\t ]*include[\t ]+<\([a-zA-Z0-9_/\.]+\)')
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33
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34 p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\(\*+/\)?')
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35 p_cpp_comment = regex.compile('//.*')
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36
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37 ignores = [p_comment, p_cpp_comment]
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38
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39 p_char = regex.compile("'\(\\\\.[^\\\\]*\|[^\\\\]\)'")
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40
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41 filedict = {}
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42
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43 try:
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44 searchdirs=string.splitfields(os.environ['include'],';')
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45 except KeyError:
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46 try:
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47 searchdirs=string.splitfields(os.environ['INCLUDE'],';')
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48 except KeyError:
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49 searchdirs=['/usr/include']
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50
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51 def main():
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52 global filedict
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53 opts, args = getopt.getopt(sys.argv[1:], 'i:')
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54 for o, a in opts:
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55 if o == '-i':
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56 ignores.append(regex.compile(a))
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57 if not args:
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58 args = ['-']
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59 for filename in args:
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60 if filename == '-':
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61 sys.stdout.write('# Generated by h2py from stdin\n')
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62 process(sys.stdin, sys.stdout)
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63 else:
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64 fp = open(filename, 'r')
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65 outfile = os.path.basename(filename)
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66 i = string.rfind(outfile, '.')
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67 if i > 0: outfile = outfile[:i]
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68 outfile = string.upper(outfile)
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69 outfile = outfile + '.py'
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70 outfp = open(outfile, 'w')
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71 outfp.write('# Generated by h2py from %s\n' % filename)
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72 filedict = {}
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73 for dir in searchdirs:
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74 if filename[:len(dir)] == dir:
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75 filedict[filename[len(dir)+1:]] = None # no '/' trailing
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76 break
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77 process(fp, outfp)
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78 outfp.close()
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79 fp.close()
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80
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81 def process(fp, outfp, env = {}):
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82 lineno = 0
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83 while 1:
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84 line = fp.readline()
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85 if not line: break
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86 lineno = lineno + 1
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87 n = p_define.match(line)
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88 if n >= 0:
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89 # gobble up continuation lines
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90 while line[-2:] == '\\\n':
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91 nextline = fp.readline()
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92 if not nextline: break
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93 lineno = lineno + 1
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94 line = line + nextline
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95 name = p_define.group(1)
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96 body = line[n:]
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97 # replace ignored patterns by spaces
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98 for p in ignores:
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99 body = regsub.gsub(p, ' ', body)
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100 # replace char literals by ord(...)
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101 body = regsub.gsub(p_char, 'ord(\\0)', body)
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102 stmt = '%s = %s\n' % (name, string.strip(body))
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103 ok = 0
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104 try:
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105 exec stmt in env
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106 except:
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107 sys.stderr.write('Skipping: %s' % stmt)
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108 else:
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109 outfp.write(stmt)
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110 n =p_macro.match(line)
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111 if n >= 0:
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112 macro, arg = p_macro.group(1, 2)
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113 body = line[n:]
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114 for p in ignores:
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115 body = regsub.gsub(p, ' ', body)
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116 body = regsub.gsub(p_char, 'ord(\\0)', body)
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117 stmt = 'def %s(%s): return %s\n' % (macro, arg, body)
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118 try:
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119 exec stmt in env
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120 except:
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121 sys.stderr.write('Skipping: %s' % stmt)
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122 else:
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123 outfp.write(stmt)
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124 if p_include.match(line) >= 0:
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125 regs = p_include.regs
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126 a, b = regs[1]
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127 filename = line[a:b]
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128 if not filedict.has_key(filename):
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129 filedict[filename] = None
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130 inclfp = None
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131 for dir in searchdirs:
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132 try:
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133 inclfp = open(dir + '/' + filename, 'r')
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134 break
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135 except IOError:
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136 pass
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137 if inclfp:
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138 outfp.write(
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139 '\n# Included from %s\n' % filename)
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140 process(inclfp, outfp, env)
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141 else:
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142 sys.stderr.write('Warning - could not find file %s' % filename)
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143
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a8b7ee0e572d Get rid of freeze (now its own directory).
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144 main()