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114 lines
2.2 KiB
114 lines
2.2 KiB
#!/usr/bin/python
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import re
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from sys import argv
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startline = "/* autogenerated by update_header.py. Please check and uncomment.\n"
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changedline = "// changed declarations:\n"
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newline = "// new declarations:\n"
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endline = "*/ // update_header.py end\n"
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def parse_c(data):
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l=0
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while l!=len(data):
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l=len(data)
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data=re.sub(r"(?ms)\{[^{}]*\}",";",data)
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data = re.sub(r"(?ms)/\*.*?\*/","",data)
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data = re.sub(r"(?m)^#.*$","",data)
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data = data.split(";")
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data = map(lambda x:x.strip(), data)
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data = filter(None, data) # kill empty lines
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data = map(lambda x:re.sub(r"\s*=.*$","",x), data)
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return data
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def make_symtable(data):
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symbols={}
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for i in data:
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symname=get_symname(i)
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symbols[symname] = i
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return symbols
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def get_symname(line):
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try:
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r = re.search(r"(\w+)($|\(|\[)",line).groups()[0]
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return r
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except:
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raise 'Could not extract symbol from "%s".'%repr(line)
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def update_header(filebase):
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data = file(filebase+".c").read()
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data = parse_c(data)
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header = file(filebase+".h").read()
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header = parse_c(header)
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headersyms = make_symtable(header)
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changed=[]
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new=[]
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for i in data:
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symname = get_symname(i)
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if symname not in headersyms:
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new.append(i)
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continue
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headerline = headersyms[symname]
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headerline = re.sub(r"extern\s+","",headerline)
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if headerline != i:
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changed.append(i)
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print changed
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print new
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if (not changed) and (not new):
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return # nothing to do
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fd=file(filebase+".h")
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header = fd.readlines()
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fd.close()
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if startline in header:
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try:
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print "foo"
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start=header.index(startline)
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stop=header.index(endline)
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print start, stop
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header = header[:start] + header[stop+1:]
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fd = file(filebase+".h","wb")
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fd.write("".join(header))
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fd.close()
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except:
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print "Error killing old entry"
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fd = file(filebase+".h","ab")
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fd.write("\n\n\n")
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fd.write(startline)
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if changed:
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fd.write("\n")
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fd.write(changedline)
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for i in changed:
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fd.write("extern "+i+";\n")
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if new:
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fd.write("\n")
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fd.write(newline)
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for i in new:
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fd.write("extern "+i+";\n")
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fd.write("\n")
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fd.write(endline)
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fd.write("\n\n\n")
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fd.close()
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def main():
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for i in argv[1:]:
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i=re.sub(".[ch]$","",i)
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update_header(i)
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if __name__=="__main__":
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main()
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