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Message-ID: <20160108000915.GA2551@swordfish>
Date: Fri, 8 Jan 2016 09:13:05 +0900
From: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Tejun Heo <tj@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
David Airlie <airlied@...ux.ie>,
Andrew Morton <akpm@...ux-foundation.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [PATCH v1 1/8] lib/string: introduce match_string() helper
On (01/07/16 14:06), Andy Shevchenko wrote:
>
> From time to time we have to match a string in an array. Make a simple helper
> for that purpose.
>
Hello,
strncmp() case seems to be quite common.
> +int match_string(const char * const *array, size_t len, const char *string)
^^^^^^^
a nitpick, [to me] `len' looks a bit confusing, usually it's array 'size'.
> +{
> + int index = 0;
> + const char *item;
> +
> + do {
> + item = array[index];
> + if (!item)
> + break;
> + if (!strcmp(item, string))
> + return index;
> + } while (++index < len || !len);
> +
> + return -ENODATA;
> +}
do you want to do something like this:
/*
* hm, how to name this thing... nmatch_string() or match_nstring()...
* nmatch_string() _probably_ better, match_nstring() is totally cryptic.
*/
int nmatch_string(array, array_size, string, string_len)
{
do {
strncmp();
} while ();
}
int match_string(array, array_size, string)
{
return nmatch_string(array, array_size, string, strlen(string));
}
-ss
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