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https://github.com/fish-shell/fish-shell.git
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Rewrite automatic completion creator from scratch. The new implementation uses a finite state machine instead of a set of regexes, which inpractice seems to make the parser more robust and the code subjectively more readable
darcs-hash:20071028185143-75c98-92c1a0cd579ff0c41f47e75c975405fe3e002ddb.gz
This commit is contained in:
liljencrantz
parent
6dfdb3ba6e
commit
bdd1b6b4b2
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@ -4,103 +4,152 @@ import sys
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import commands
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import re
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# Regexes for performing cleanup
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cl = {re.compile(r"[ \n\t\r]+", re.MULTILINE):" ",
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re.compile(r"^[ \n\t\r]"):"",
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re.compile(r"[ \n\t\r]$"):"",
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re.compile(r"-[ \t]*\n[ \t\r]+" ):""}
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def header(cmd):
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print '''#
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# Command specific completions for the %s command.
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# These completions where generated from the commands
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# man page by the make_completions.py script, but may
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# have been hand edited since.
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#
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''' % (cmd)
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def up_first(s):
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return s[0].upper() + s[1:]
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def escape_quotes(s):
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return re.sub('\'', '\\\'', s)
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def escape(s):
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return re.sub('([\'"#%*?])', r"\\\1", s)
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def print_completion( cmd, switch_name, arg, desc ):
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def clean(s):
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res=s
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for r, str in cl.items():
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res = r.sub(str, res)
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return res
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offset=1
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switch_type = "o"
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def print_completion( cmd, switch_arr, arg, desc ):
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if len(switch_name) == 2:
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switch_type = "s"
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if len(switch_arr)==0:
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return
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res = "complete -c %s" % (cmd)
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for sw in switch_arr:
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offset=1
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switch_type = "o"
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if len(sw) == 2:
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switch_type = "s"
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if switch_name[1] == "-":
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switch_type = "l"
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offset=2
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if sw[1] == "-":
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switch_type = "l"
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offset=2
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arg_str = ""
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if arg == None:
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pass
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elif arg == "standard":
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arg_str = "-a 'c89 c99 gnu89 gnu99 c++98 gnu++98'"
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else:
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pass
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print "complete -c %s -%s %s %s --description '%s'" % (cmd, switch_type, escape( switch_name[offset:] ), arg_str, escape_quotes(desc))
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def clean_whitespace( str ):
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clean_whitespace_prog0 = re.compile( r"-[ \t]*\n[ \t\r]+" )
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clean_whitespace_prog1 = re.compile( r"[ \n\t]+" )
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clean_whitespace_prog2 = re.compile( r"^[ \t\r]*", re.MULTILINE )
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str = clean_whitespace_prog0.sub( "", str )
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str = clean_whitespace_prog1.sub( " ", str )
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str = clean_whitespace_prog2.sub( "", str )
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return str
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res += " -%s %s" % (switch_type, escape(sw[offset:]))
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res += " --description '%s'" % (up_first(escape_quotes(clean(desc))))
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print res
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cmd = sys.argv[1]
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header(cmd)
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man = commands.getoutput( "man %s | col -b" % cmd )
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remainder = man
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re1 = r"\n( *-[^ ,]* *(|\n))+[^.]+"
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prog1 = re.compile(re1, re.MULTILINE)
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MODE_NONE = 0
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MODE_SWITCH = 1
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MODE_BETWEEN = 2
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MODE_BETWEEN_IGNORE = 3
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MODE_DESC = 4
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re2 = r"^(|=[^ ]*)( |\n)*(?P<switch>-[^ =./\n]+)( *[^-\n ]*\n|)"
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prog2 = re.compile(re2, re.MULTILINE)
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mode = MODE_NONE
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pos = 0
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sw=''
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sw_arr=[]
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switch_end="= \t\n[,"
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switch_between_ignore="[="
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switch_between_continue=" \t\n|"
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before_switch=" \t\r"
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between_ignore=" \t\n]"
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pc=False
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desc=''
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re3 = r"^=(?P<arg>[^ ]*)"
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prog3 = re.compile(re2, 0)
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can_be_switch =True
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while True:
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for c in man:
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match = prog1.search( remainder )
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if mode == MODE_NONE:
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if c == '-' and can_be_switch:
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mode = MODE_SWITCH
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sw = '-'
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if match == None:
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break
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elif c == '\n':
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can_be_switch = True
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elif before_switch.find(c)<0:
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can_be_switch = False
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# print "yay match!!!\n"
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str = match.string[match.start():match.end()]
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elif mode == MODE_SWITCH:
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if not switch_end.find(c)>=0:
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sw+=c
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else:
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if len(sw) > 1:
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sw_arr.append(sw)
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if switch_between_ignore.find(c) >= 0:
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mode=MODE_BETWEEN_IGNORE
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else:
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mode=MODE_BETWEEN
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# print "End of switch argumnt", sw, "switch to between mode"
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sw=''
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# print str
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elif mode == MODE_BETWEEN:
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if c == '-':
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mode = MODE_SWITCH
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sw = '-'
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elif switch_between_ignore.find(c) >= 0:
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mode = MODE_BETWEEN_IGNORE
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# print "Found character", c, "switching to ignore mode"
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elif not switch_between_continue.find(c) >= 0:
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mode = MODE_DESC
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desc = c
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elif mode == MODE_BETWEEN_IGNORE:
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if between_ignore.find(c)>=0:
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mode = MODE_BETWEEN
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rem2 = str
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elif mode == MODE_DESC:
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switch = []
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stop = False
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while True:
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match2 = prog2.search( rem2 )
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if c == '.':
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stop = True
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if match2 == None:
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break
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if c == '\n' and pc == '\n':
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stop=True
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sw = match2.expand( r"\g<switch>" )
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# print "yay switch %s!!!\n" %sw
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if stop:
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mode=MODE_NONE
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print_completion( cmd, sw_arr, None, desc )
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switch.append( sw )
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sw_arr = []
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rem2 = rem2[match2.end():]
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match_arg = prog3.search( rem2 )
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arg = None
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if match_arg != None:
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arg = match_arg.expand( r"\g<arg>" )
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rem2 = rem2[match_arg.end():]
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desc = clean_whitespace(rem2)
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if len( desc) > 8 and arg != None:
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# print "Yay desc '%s'!!\n" % desc
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for i in switch:
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print_completion( cmd, i, arg, desc )
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remainder = remainder[match.end():]
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desc = ''
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else:
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desc += c
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pc = c
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