add parse-glibc script that match annotations in system headers against cppcheck cfg files
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import glob
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import os
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def checknonnull(cfg, functionName, nonnull):
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pos1 = cfg.find('<function name="' + functionName + '">')
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if pos1 < 0:
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return
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pos2 = cfg.find('</function>', pos1)
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if pos2 < 0:
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return
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functionCfg = cfg[pos1:pos2]
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s = None
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for argnr in range(10):
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argpos1 = functionCfg.find('<arg nr="'+str(argnr)+'">')
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if argpos1 < 0:
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continue
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argpos2 = functionCfg.find('</arg>', argpos1)
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notnullpos = functionCfg.find('not-null', argpos1)
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if notnullpos > 0 and notnullpos < argpos2:
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if s:
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s = s + ', ' + str(argnr)
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else:
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s = str(argnr)
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if s != nonnull:
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if not nonnull:
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nonnull = ''
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if not s:
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s = ''
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print(functionName + '\tglibc:' + nonnull + '\tcfg:' + s)
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def parseheader(cppcheckpath, filename):
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f = open(filename,'rt')
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data = f.read()
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f.close()
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f = open(cppcheckpath + '/cfg/std.cfg', 'rt')
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stdcfg = f.read()
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f.close()
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f = open(cppcheckpath + '/cfg/posix.cfg', 'rt')
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posixcfg = f.read()
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f.close()
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while data.find('/*') >= 0:
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pos1 = data.find('/*')
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pos2 = data.find('*/', pos1+2)
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data = data[:pos1] + data[pos2+2:]
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data = data.replace('\\\n', '')
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while data.find('\n#') >= 0:
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pos1 = data.find('\n#')
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pos2 = data.find('\n', pos1+1)
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data = data[:pos1] + data[pos2:]
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while data.find('\n__BEGIN') >= 0:
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pos1 = data.find('\n__BEGIN')
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pos2 = data.find('\n', pos1 + 1)
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data = data[:pos1] + data[pos2:]
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while data.find('\n__END') >= 0:
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pos1 = data.find('\n__END')
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pos2 = data.find('\n', pos1 + 1)
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data = data[:pos1] + data[pos2:]
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data = data.replace('\n\n', '\n')
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data = data.replace('\t', ' ')
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data = data.replace(',\n ', ',')
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data = data.replace(')\n ', ',')
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data = data.replace(' ', ' ')
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output = []
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for line in data.split('\n'):
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if (line[:7] != 'extern ' and line.find(' extern ') < 0) or line[-1] != ';':
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continue
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functionNameEnd = line.find('(') - 1
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if functionNameEnd < 0:
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continue
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while line[functionNameEnd] == ' ':
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functionNameEnd = functionNameEnd - 1
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if functionNameEnd < 10:
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continue
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functionNameStart = functionNameEnd
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while line[functionNameStart] == '_' or line[functionNameStart].isalnum():
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functionNameStart = functionNameStart - 1
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if functionNameStart < 10:
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continue
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if line[functionNameStart] != '*' and line[functionNameStart] != ' ':
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continue
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functionNameStart = functionNameStart + 1
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if not line[functionNameStart].isalpha():
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continue
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functionName = line[functionNameStart:functionNameEnd+1]
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nonnull = None
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nonnullStart = line.find('__nonnull')
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if nonnullStart > 0:
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nonnullStart = nonnullStart + 9
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while nonnullStart < len(line) and line[nonnullStart] == ' ':
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nonnullStart = nonnullStart + 1
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if nonnullStart >= len(line) or line[nonnullStart] != '(':
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continue
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while line[nonnullStart] == '(':
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nonnullStart = nonnullStart + 1
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nonnullEnd = line.find(')', nonnullStart)
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nonnull = line[nonnullStart:nonnullEnd]
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checknonnull(stdcfg, functionName, nonnull)
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checknonnull(posixcfg, functionName, nonnull)
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if nonnull:
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s = functionName + ' ' + nonnull
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if s not in output:
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output.append(s)
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for f in glob.glob('/usr/include/*.h'):
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parseheader(os.path.expanduser('~/cppcheck'), f)
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