From 0f1930c58754a821bd51087ca4676e6a69cd4d2b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Sat, 25 Feb 2012 20:14:54 +0100 Subject: parse-options: allow positivation of options starting, with no- Long options can be negated by adding no- right after the leading two dashes. This is useful e.g. to override options set by aliases. For options that are defined to start with no- already, this looks a bit funny. Allow such options to also be negated by removing the prefix. The following thirteen options are affected: apply --no-add bisect--helper --no-checkout checkout-index --no-create clone --no-checkout --no-hardlinks commit --no-verify --no-post-rewrite format-patch --no-binary hash-object --no-filters read-tree --no-sparse-checkout revert --no-commit show-branch --no-name update-ref --no-deref The following five are NOT affected because they are defined with PARSE_OPT_NONEG or the non-negated version is defined as well: branch --no-merged format-patch --no-stat --no-numbered update-index --no-assume-unchanged --no-skip-worktree Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- parse-options.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) (limited to 'parse-options.c') diff --git a/parse-options.c b/parse-options.c index f0098eb8ea..8906841665 100644 --- a/parse-options.c +++ b/parse-options.c @@ -193,13 +193,14 @@ static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg, arg_end = arg + strlen(arg); for (; options->type != OPTION_END; options++) { - const char *rest; - int flags = 0; + const char *rest, *long_name = options->long_name; + int flags = 0, opt_flags = 0; - if (!options->long_name) + if (!long_name) continue; - rest = skip_prefix(arg, options->long_name); +again: + rest = skip_prefix(arg, long_name); if (options->type == OPTION_ARGUMENT) { if (!rest) continue; @@ -212,7 +213,7 @@ static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg, } if (!rest) { /* abbreviated? */ - if (!strncmp(options->long_name, arg, arg_end - arg)) { + if (!strncmp(long_name, arg, arg_end - arg)) { is_abbreviated: if (abbrev_option) { /* @@ -227,7 +228,7 @@ is_abbreviated: if (!(flags & OPT_UNSET) && *arg_end) p->opt = arg_end + 1; abbrev_option = options; - abbrev_flags = flags; + abbrev_flags = flags ^ opt_flags; continue; } /* negation allowed? */ @@ -239,12 +240,18 @@ is_abbreviated: goto is_abbreviated; } /* negated? */ - if (strncmp(arg, "no-", 3)) + if (prefixcmp(arg, "no-")) { + if (!prefixcmp(long_name, "no-")) { + long_name += 3; + opt_flags |= OPT_UNSET; + goto again; + } continue; + } flags |= OPT_UNSET; - rest = skip_prefix(arg + 3, options->long_name); + rest = skip_prefix(arg + 3, long_name); /* abbreviated and negated? */ - if (!rest && !prefixcmp(options->long_name, arg + 3)) + if (!rest && !prefixcmp(long_name, arg + 3)) goto is_abbreviated; if (!rest) continue; @@ -254,7 +261,7 @@ is_abbreviated: continue; p->opt = rest + 1; } - return get_value(p, options, flags); + return get_value(p, options, flags ^ opt_flags); } if (ambiguous_option) -- cgit v1.2.3