Make first stab at a manual page parser. It takes the name of a command as input and outputs completions for it.

darcs-hash:20070125012728-ac50b-442dec7a0252f7cf817f442623161e33ce50c355.gz

make_completions.py

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+#!/usr/bin/env python
+
+import sys
+import commands
+import re
+
+def escape_quotes(s):
+  return re.sub('\'', '\\\'', s)
+
+def escape(s):
+  return re.sub('([\'"#%*?])', r"\\\1", s)
+
+def print_completion( cmd, switch_name, desc ):
+
+	offset=1
+	switch_type = "o"
+
+	if len(switch_name) == 2:
+		switch_type = "s"
+
+	if switch_name[1] == "-":
+		switch_type = "l"
+		offset=2
+
+	print "complete -c %s -%s %s --description '%s'" % (cmd, switch_type, escape( switch_name[offset:] ), escape_quotes(desc))
+
+def clean_whitespace( str ):
+	clean_whitespace_prog0 = re.compile( r"-[ \t]*\n[ \t\r]+" )
+	clean_whitespace_prog1 = re.compile( r"[ \n\t]+" )
+	clean_whitespace_prog2 = re.compile( r"^[ \t\r]*", re.MULTILINE )
+	str = clean_whitespace_prog0.sub( "", str )
+	str = clean_whitespace_prog1.sub( " ", str )
+	str = clean_whitespace_prog2.sub( "", str )
+	return str
+
+
+
+cmd = sys.argv[1]
+man = commands.getoutput( "man %s | col -b" % cmd )
+remainder = man
+
+re1 = r"\n( *-[^ ,]*  *(|\n))+[^.]+"
+prog1 = re.compile(re1, re.MULTILINE)
+
+re2 = r"^(|=[^ ]*)( |\n)*(?P<switch>-[^ =./\n]+)(  *[^-\n ]*\n|)"
+prog2 = re.compile(re2, re.MULTILINE)
+
+while True:
+
+	match = prog1.search( remainder )  
+
+	if match == None:
+		break
+
+#	print "yay match!!!\n"
+	str = match.string[match.start():match.end()]
+
+#	print str
+
+	rem2 = str
+
+	switch = []
+
+	while True:
+		match2 = prog2.search( rem2 )
+
+		if match2 == None:
+			break
+
+		sw = match2.expand( r"\g<switch>" )
+#		print "yay switch %s!!!\n" %sw
+
+		switch.append( sw )
+
+		rem2 = rem2[match2.end():]
+
+	desc = clean_whitespace(rem2)
+
+	if len( desc) > 8:
+
+#		print "Yay desc '%s'!!\n" % desc
+
+		for i in switch:
+			print_completion( cmd, i, desc )
+
+
+	remainder = remainder[match.end():]
+