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tools include: Adopt strstarts() from the kernel

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Replacing prefixcmp(), same purpose, inverted result, so standardize on
the kernel variant, to reduce silly differences among tools/ and the
kernel sources, making it easier for people to work in both codebases.

And then doing:

	if (strstarts(option, "no-"))

Looks clearer than doing:

	if (!prefixcmp(option, "no-"))

To figure out if option starts witn "no-".

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-kaei42gi7lpa8subwtv7eug8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2017-07-20 15:27:39 -03:00
parent 082ab9a18e
commit 8e99b6d453
15 changed files with 50 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
tools/lib/string.c
View File

@@ -87,12 +87,3 @@ size_t __weak strlcpy(char *dest, const char *src, size_t size)
}
return ret;
}
int prefixcmp(const char *str, const char *prefix)
{
for (; ; str++, prefix++)
if (!*prefix)
return 0;
else if (*str != *prefix)
return (unsigned char)*prefix - (unsigned char)*str;
}

2
tools/lib/subcmd/help.c
View File

@@ -171,7 +171,7 @@ static void list_commands_in_dir(struct cmdnames *cmds,
while ((de = readdir(dir)) != NULL) {
int entlen;
if (prefixcmp(de->d_name, prefix))
if (!strstarts(de->d_name, prefix))
continue;
astrcat(&buf, de->d_name);

18
tools/lib/subcmd/parse-options.c
View File

@@ -368,7 +368,7 @@ retry:
return 0;
}
if (!rest) {
if (!prefixcmp(options->long_name, "no-")) {
if (strstarts(options->long_name, "no-")) {
/*
* The long name itself starts with "no-", so
* accept the option without "no-" so that users
@@ -381,7 +381,7 @@ retry:
goto match;
}
/* Abbreviated case */
if (!prefixcmp(options->long_name + 3, arg)) {
if (strstarts(options->long_name + 3, arg)) {
flags |= OPT_UNSET;
goto is_abbreviated;
}
@@ -406,7 +406,7 @@ is_abbreviated:
continue;
}
/* negated and abbreviated very much? */
if (!prefixcmp("no-", arg)) {
if (strstarts("no-", arg)) {
flags |= OPT_UNSET;
goto is_abbreviated;
}
@@ -416,7 +416,7 @@ is_abbreviated:
flags |= OPT_UNSET;
rest = skip_prefix(arg + 3, options->long_name);
/* abbreviated and negated? */
if (!rest && !prefixcmp(options->long_name, arg + 3))
if (!rest && strstarts(options->long_name, arg + 3))
goto is_abbreviated;
if (!rest)
continue;
@@ -456,7 +456,7 @@ static void check_typos(const char *arg, const struct option *options)
if (strlen(arg) < 3)
return;
if (!prefixcmp(arg, "no-")) {
if (strstarts(arg, "no-")) {
fprintf(stderr, " Error: did you mean `--%s` (with two dashes ?)", arg);
exit(129);
}
@@ -464,7 +464,7 @@ static void check_typos(const char *arg, const struct option *options)
for (; options->type != OPTION_END; options++) {
if (!options->long_name)
continue;
if (!prefixcmp(options->long_name, arg)) {
if (strstarts(options->long_name, arg)) {
fprintf(stderr, " Error: did you mean `--%s` (with two dashes ?)", arg);
exit(129);
}
@@ -933,10 +933,10 @@ opt:
if (opts->long_name == NULL)
continue;
if (!prefixcmp(opts->long_name, optstr))
if (strstarts(opts->long_name, optstr))
print_option_help(opts, 0);
if (!prefixcmp("no-", optstr) &&
!prefixcmp(opts->long_name, optstr + 3))
if (strstarts("no-", optstr) &&
strstarts(opts->long_name, optstr + 3))
print_option_help(opts, 0);
}