Subject: + lib-parserc-add-match_wildcard-function.patch added to -mm tree To: changbin.du@xxxxxxxxx,jbaron@xxxxxxxxxx,joe@xxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 19 Nov 2013 15:34:19 -0800 The patch titled Subject: lib/parser.c: add match_wildcard function has been added to the -mm tree. Its filename is lib-parserc-add-match_wildcard-function.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/lib-parserc-add-match_wildcard-function.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/lib-parserc-add-match_wildcard-function.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: "Du, Changbin" <changbin.du@xxxxxxxxx> Subject: lib/parser.c: add match_wildcard function match_wildcard function is a simple implementation of wildcard matching algorithm. It only supports two usual wildcardes: '*' - matches zero or more characters '?' - matches one character This algorithm is safe since it is non-recursive. Signed-off-by: Du, Changbin <changbin.du@xxxxxxxxx> Cc: Jason Baron <jbaron@xxxxxxxxxx> Cc: Joe Perches <joe@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/parser.h | 1 lib/parser.c | 51 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) diff -puN include/linux/parser.h~lib-parserc-add-match_wildcard-function include/linux/parser.h --- a/include/linux/parser.h~lib-parserc-add-match_wildcard-function +++ a/include/linux/parser.h @@ -29,5 +29,6 @@ int match_token(char *, const match_tabl int match_int(substring_t *, int *result); int match_octal(substring_t *, int *result); int match_hex(substring_t *, int *result); +bool match_wildcard(const char *pattern, const char *str); size_t match_strlcpy(char *, const substring_t *, size_t); char *match_strdup(const substring_t *); diff -puN lib/parser.c~lib-parserc-add-match_wildcard-function lib/parser.c --- a/lib/parser.c~lib-parserc-add-match_wildcard-function +++ a/lib/parser.c @@ -193,6 +193,56 @@ int match_hex(substring_t *s, int *resul } /** + * match_wildcard: - parse if a string matches given wildcard pattern + * @pattern: wildcard pattern + * @str: the string to be parsed + * + * Description: Parse the string @str to check if matches wildcard + * pattern @pattern. The pattern may contain two type wildcardes: + * '*' - matches zero or more characters + * '?' - matches one character + * If it's matched, return true, else return false. + */ +bool match_wildcard(const char *pattern, const char *str) +{ + const char *s = str; + const char *p = pattern; + bool star = false; + + while (*s) { + switch (*p) { + case '?': + s++; + p++; + break; + case '*': + star = true; + str = s; + if (!*++p) + return true; + pattern = p; + break; + default: + if (*s == *p) { + s++; + p++; + } else { + if (!star) + return false; + str++; + s = str; + p = pattern; + } + break; + } + } + + if (*p == '*') + ++p; + return !*p; +} + +/** * match_strlcpy: - Copy the characters from a substring_t to a sized buffer * @dest: where to copy to * @src: &substring_t to copy @@ -235,5 +285,6 @@ EXPORT_SYMBOL(match_token); EXPORT_SYMBOL(match_int); EXPORT_SYMBOL(match_octal); EXPORT_SYMBOL(match_hex); +EXPORT_SYMBOL(match_wildcard); EXPORT_SYMBOL(match_strlcpy); EXPORT_SYMBOL(match_strdup); _ Patches currently in -mm which might be from changbin.du@xxxxxxxxx are lib-parserc-add-match_wildcard-function.patch dynamic_debug-add-wildcard-support-to-filter-files-functions-modules.patch dynamic-debug-howtotxt-update-since-new-wildcard-support.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html