Sometimes source files can become quite large. This is common mostly in C. But this may happen in other languages too. It makes working with these files particularly hard. Off-course there are IDEs which lists method and properties and what not. But there is a fun way to do the same stuff using python. The regex for the signature of Java methods is, (public|protected|private|static|\s) +[\w\\[\]]+\s+(\w+) *\([^\)]*\) *(\{?|[^;]) You can use this regex in python and have some fun summarizing your Java source files. Here is the script: on Github and via Gist,
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| methodSignature = '(public|protected|private|static|\s) +[\w\<\>\[\]]+\s+(\w+) *\([^\)]*\) *(\{?|[^;])' | |
| import traceback | |
| def main(): | |
| import getopt, sys, re | |
| try: | |
| options, args = getopt.getopt(sys.argv[1:], 'i:h', ['input=','help']) | |
| except getopt.GetoptError as err: | |
| # print help information and exit: | |
| print(err) # will print something like 'option -a not recognized' | |
| sys.exit(2) | |
| javaFile = '' | |
| # read args | |
| for opt, arg in options: | |
| if opt in ('-i', '--input'): | |
| javaFile = arg | |
| if javaFile is '': javaFile = sys.argv[1] | |
| try: | |
| with open(javaFile, "rU") as file: | |
| lines = file.readlines() | |
| print '//',javaFile | |
| print '//',len(lines), 'lines of code' | |
| methods = {} | |
| for line in lines: | |
| try: | |
| m = re.search(methodSignature,line) | |
| if len(m.group(0))>0 : | |
| methodLine = m.group(0) | |
| methodLine = methodLine.replace(' {','') | |
| access, type, methodSig = methodLine.split(' ',2) | |
| # print m.group(0) | |
| methods[methodSig] = (access, type) | |
| except: a=1 | |
| #print '\nSorted list\n' | |
| for methodSig in sorted(methods.keys()): | |
| (access,type) = methods[methodSig] | |
| print '{} {} {};'.format(access,type,methodSig) | |
| except Exception, e: | |
| traceback.print_exc() | |
| if __name__ == '__main__': | |
| main() |
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