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Message-ID: <CAK7LNASr5yJ8HY8vRye12UyV7rcx_N=4Abz8fz9AQDh4y8TsYg@mail.gmail.com>
Date: Thu, 8 Feb 2018 10:49:34 +0900
From: Masahiro Yamada <yamada.masahiro@...ionext.com>
To: Ulf Magnusson <ulfalizer@...il.com>
Cc: Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Nicolas Pitre <nicolas.pitre@...aro.org>,
"Luis R . Rodriguez" <mcgrof@...e.com>,
Randy Dunlap <rdunlap@...radead.org>,
Sam Ravnborg <sam@...nborg.org>,
Michal Marek <michal.lkml@...kovi.net>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Marc Herbert <marc.herbert@...el.com>
Subject: Re: [PATCH 01/14] kconfig: send error messages to stderr
2018-02-08 5:24 GMT+09:00 Ulf Magnusson <ulfalizer@...il.com>:
> On Tue, Feb 6, 2018 at 1:34 AM, Masahiro Yamada
> <yamada.masahiro@...ionext.com> wrote:
>> These messages should be directed to stderr.
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
>> ---
>>
>> scripts/kconfig/conf.c | 18 +++++++++++-------
>> scripts/kconfig/zconf.l | 27 +++++++++++++++------------
>> 2 files changed, 26 insertions(+), 19 deletions(-)
>>
>> diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
>> index 307bc3f..90a76aa2 100644
>> --- a/scripts/kconfig/conf.c
>> +++ b/scripts/kconfig/conf.c
>> @@ -75,9 +75,11 @@ static void strip(char *str)
>> static void check_stdin(void)
>> {
>> if (!valid_stdin) {
>> - printf(_("aborted!\n\n"));
>> - printf(_("Console input/output is redirected. "));
>> - printf(_("Run 'make oldconfig' to update configuration.\n\n"));
>> + fprintf(stderr,
>> + _("Aborted!\n"
>> + "Console input/output is redirected.\n"
>> + "Run 'make oldconfig' to update configuration.\n\n")
>> + );
>
> This could use fputs() too, moving the stderr to the last argument.
In general, I am not keen on replacement of (f)printf with (f)puts.
If '%' does not appear in the format literal, compiler will automatically
replace the function call with a faster one.
My compiler replaced both fprintf(stderr, "blah\n") and fputs("blah\n", stderr)
with fwrite.
At this moment, right, the compiler cannot optimize it
because it never knows the result of _(...).
If we rip off the gettext things, it will be optimized.
> I think the _() thingies around the strings are for gettext
> (https://www.gnu.org/software/gettext/manual/html_node/Mark-Keywords.html).
> This would break it if there are existing translations, since the
> msgids change.
Right. I will keep inside _(...) as-is just in case
to not break gettext.
> More practically, I doubt anyone is translating these tools. IMO we
> should remove the gettext stuff unless we find traces of translations.
I agree. Probably, it should not hurt to eliminate gettext,
but out of scope of this series.
>> exit(1);
>> }
>> }
>> @@ -565,7 +567,7 @@ int main(int ac, char **av)
>> }
>> }
>> if (ac == optind) {
>> - printf(_("%s: Kconfig file missing\n"), av[0]);
>> + fprintf(stderr, _("%s: Kconfig file missing\n"), av[0]);
>> conf_usage(progname);
>> exit(1);
>> }
>> @@ -590,9 +592,11 @@ int main(int ac, char **av)
>> if (!defconfig_file)
>> defconfig_file = conf_get_default_confname();
>> if (conf_read(defconfig_file)) {
>> - printf(_("***\n"
>> - "*** Can't find default configuration \"%s\"!\n"
>> - "***\n"), defconfig_file);
>> + fprintf(stderr,
>> + _("***\n"
>> + "*** Can't find default configuration \"%s\"!\n"
>> + "***\n"),
>> + defconfig_file);
>> exit(1);
>> }
>> break;
>> diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
>> index 07e074d..0ba4900 100644
>> --- a/scripts/kconfig/zconf.l
>> +++ b/scripts/kconfig/zconf.l
>> @@ -184,7 +184,9 @@ n [A-Za-z0-9_-]
>> append_string(yytext, 1);
>> }
>> \n {
>> - printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
>> + fprintf(stderr,
>> + "%s:%d:warning: multi-line strings not supported\n",
>> + zconf_curname(), zconf_lineno());
>
> Whether stuff is translated seems inconsistent too.
Right. Many people change the same tool, it is difficult to
keep the consistency.
>> current_file->lineno++;
>> BEGIN(INITIAL);
>> return T_EOL;
>> @@ -294,7 +296,7 @@ void zconf_initscan(const char *name)
>> {
>> yyin = zconf_fopen(name);
>> if (!yyin) {
>> - printf("can't find file %s\n", name);
>> + fprintf(stderr, "can't find file %s\n", name);
>> exit(1);
>> }
>>
>> @@ -315,8 +317,8 @@ void zconf_nextfile(const char *name)
>> current_buf->state = YY_CURRENT_BUFFER;
>> yyin = zconf_fopen(file->name);
>> if (!yyin) {
>> - printf("%s:%d: can't open file \"%s\"\n",
>> - zconf_curname(), zconf_lineno(), file->name);
>> + fprintf(stderr, "%s:%d: can't open file \"%s\"\n",
>> + zconf_curname(), zconf_lineno(), file->name);
>> exit(1);
>> }
>> yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
>> @@ -325,20 +327,21 @@ void zconf_nextfile(const char *name)
>>
>> for (iter = current_file->parent; iter; iter = iter->parent ) {
>> if (!strcmp(current_file->name,iter->name) ) {
>> - printf("%s:%d: recursive inclusion detected. "
>> - "Inclusion path:\n current file : '%s'\n",
>> - zconf_curname(), zconf_lineno(),
>> - zconf_curname());
>> + fprintf(stderr,
>> + "%s:%d: recursive inclusion detected. "
>> + "Inclusion path:\n current file : '%s'\n",
>> + zconf_curname(), zconf_lineno(),
>> + zconf_curname());
>> iter = current_file->parent;
>> while (iter && \
>> strcmp(iter->name,current_file->name)) {
>> - printf(" included from: '%s:%d'\n",
>> - iter->name, iter->lineno-1);
>> + fprintf(stderr, " included from: '%s:%d'\n",
>> + iter->name, iter->lineno-1);
>> iter = iter->parent;
>> }
>> if (iter)
>> - printf(" included from: '%s:%d'\n",
>> - iter->name, iter->lineno+1);
>> + fprintf(stderr, " included from: '%s:%d'\n",
>> + iter->name, iter->lineno+1);
>> exit(1);
>> }
>> }
>> --
>> 2.7.4
>>
>
> The unrelated gettext stuff aside:
>
> Reviewed-by: Ulf Magnusson <ulfalizer@...il.com>
>
> Cheers,
> Ulf
> --
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--
Best Regards
Masahiro Yamada
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