| #! /usr/bin/env python |
| """Create a TAGS file for Python programs, usable with GNU Emacs. |
| |
| usage: eptags pyfiles... |
| |
| The output TAGS file is usable with Emacs version 18, 19, 20. |
| Tagged are: |
| - functions (even inside other defs or classes) |
| - classes |
| |
| eptags warns about files it cannot open. |
| eptags will not give warnings about duplicate tags. |
| |
| BUGS: |
| Because of tag duplication (methods with the same name in different |
| classes), TAGS files are not very useful for most object-oriented |
| python projects. |
| """ |
| import sys,re |
| |
| expr = r'^[ \t]*(def|class)[ \t]+([a-zA-Z_][a-zA-Z0-9_]*)[ \t]*[:\(]' |
| matcher = re.compile(expr) |
| |
| def treat_file(filename, outfp): |
| """Append tags found in file named 'filename' to the open file 'outfp'""" |
| try: |
| fp = open(filename, 'r') |
| except: |
| sys.stderr.write('Cannot open %s\n'%filename) |
| return |
| charno = 0 |
| lineno = 0 |
| tags = [] |
| size = 0 |
| while 1: |
| line = fp.readline() |
| if not line: |
| break |
| lineno = lineno + 1 |
| m = matcher.search(line) |
| if m: |
| tag = m.group(0) + '\177%d,%d\n' % (lineno, charno) |
| tags.append(tag) |
| size = size + len(tag) |
| charno = charno + len(line) |
| outfp.write('\f\n%s,%d\n' % (filename,size)) |
| for tag in tags: |
| outfp.write(tag) |
| |
| def main(): |
| outfp = open('TAGS', 'w') |
| for filename in sys.argv[1:]: |
| treat_file(filename, outfp) |
| |
| if __name__=="__main__": |
| main() |
