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Message-Id: <20190117230313.20248-1-nicholas.d.nunley@intel.com> Date: Thu, 17 Jan 2019 15:03:08 -0800 From: Nicholas Nunley <nicholas.d.nunley@...el.com> To: linville@...driver.com Cc: Jeff Kirsher <jeffrey.t.kirsher@...el.com>, Nicholas Nunley <nicholas.d.nunley@...el.com>, netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com Subject: [ethtool 1/6] ethtool: move option parsing related code into function Move option parsing code into find_option function. No behavior changes. Based on patch by Kan Liang <kan.liang@...el.com> Signed-off-by: Nicholas Nunley <nicholas.d.nunley@...el.com> --- ethtool.c | 49 +++++++++++++++++++++++++++++++------------------ 1 file changed, 31 insertions(+), 18 deletions(-) diff --git a/ethtool.c b/ethtool.c index 2f7e96b..1e4c3bb 100644 --- a/ethtool.c +++ b/ethtool.c @@ -5265,6 +5265,29 @@ static int show_usage(struct cmd_context *ctx) return 0; } +static int find_option(int argc, char **argp) +{ + const char *opt; + size_t len; + int k; + + for (k = 0; args[k].opts; k++) { + opt = args[k].opts; + for (;;) { + len = strcspn(opt, "|"); + if (strncmp(*argp, opt, len) == 0 && + (*argp)[len] == 0) + return k; + + if (opt[len] == 0) + break; + opt += len + 1; + } + } + + return -1; +} + int main(int argc, char **argp) { int (*func)(struct cmd_context *); @@ -5284,24 +5307,14 @@ int main(int argc, char **argp) */ if (argc == 0) exit_bad_args(); - for (k = 0; args[k].opts; k++) { - const char *opt; - size_t len; - opt = args[k].opts; - for (;;) { - len = strcspn(opt, "|"); - if (strncmp(*argp, opt, len) == 0 && - (*argp)[len] == 0) { - argp++; - argc--; - func = args[k].func; - want_device = args[k].want_device; - goto opt_found; - } - if (opt[len] == 0) - break; - opt += len + 1; - } + + k = find_option(argc, argp); + if (k > 0) { + argp++; + argc--; + func = args[k].func; + want_device = args[k].want_device; + goto opt_found; } if ((*argp)[0] == '-') exit_bad_args(); -- 2.20.1
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