On Thu, Feb 15, 2024 at 10:08:40AM +0100, David Marchand wrote:
> On Wed, Feb 14, 2024 at 2:07 PM Bruce Richardson
> <bruce.richard...@intel.com> wrote:
> >
> > On Wed, Feb 14, 2024 at 01:12:19PM +0100, David Marchand wrote:
> > > Reduce code duplication by providing a simple inline helper.
> > >
> > > Signed-off-by: David Marchand <david.march...@redhat.com>
> > > ---
> > > app/graph/utils.c | 13 ++------
> > > app/test-eventdev/parser.c | 14 ++++-----
> > > app/test-eventdev/parser.h | 8 -----
> > > app/test-mldev/parser.c | 17 ++++++-----
> > > app/test-mldev/parser.h | 8 -----
> > > app/test-pmd/cmdline_tm.c | 13 ++------
> > > app/test/test_string_fns.c | 35 ++++++++++++++++++++++
> > > examples/fips_validation/fips_validation.c | 16 +++-------
> > > examples/ip_pipeline/parser.c | 14 ++++-----
> > > examples/ip_pipeline/parser.h | 8 -----
> > > examples/pipeline/cli.c | 13 ++------
> > > lib/eal/include/rte_string_fns.h | 27 +++++++++++++++++
> > > 12 files changed, 98 insertions(+), 88 deletions(-)
> > >
> > > diff --git a/app/graph/utils.c b/app/graph/utils.c
> > > index c7b6ae83cf..1f5ee68273 100644
> > > --- a/app/graph/utils.c
> > > +++ b/app/graph/utils.c
> > > @@ -9,17 +9,10 @@
> > > #include <string.h>
> > >
> > > #include <rte_common.h>
> > > +#include <rte_string_fns.h>
> > >
> > > #include "module_api.h"
> > >
> > > -#define white_spaces_skip(pos) \
> > > -({ \
> > > - __typeof__(pos) _p = (pos); \
> > > - for ( ; isspace(*_p); _p++) \
> > > - ; \
> > > - _p; \
> > > -})
> > > -
> > > static void
> > > hex_string_to_uint64(uint64_t *dst, const char *hexs)
> > > {
> > > @@ -47,7 +40,7 @@ parser_uint64_read(uint64_t *value, const char *p)
> > > char *next;
> > > uint64_t val;
> > >
> > > - p = white_spaces_skip(p);
> > > + p = rte_str_skip_whitespaces(p);
> > > if (!isdigit(*p))
> > > return -EINVAL;
> > >
> > > @@ -73,7 +66,7 @@ parser_uint64_read(uint64_t *value, const char *p)
> > > break;
> > > }
> > >
> > > - p = white_spaces_skip(p);
> > > + p = rte_str_skip_whitespaces(p);
> >
> > I like the idea of this. However, a question on naming. Do we want to make
> > it clear in the name that it only skips leading whitespace, and doesn't
> > e.g. trim whitespace off the end? How about:
> >
> > rte_str_skip_leading_spaces()
> >
> > It's longer, but I wonder if it's a bit clearer.
>
> It is clearer.
>
>
> >
> > Also, might it be worthwhile providing an "rte_str_ltrim()" function along
> > with this, basically combining the skip_spaces call, with an memmove? Most
> > string handling in DPDK is not perf-sensitive and so a function with
> > similar name and behaviour to the python ltrim function may be appreciated
> > for its simplicity.
>
> Well, most intree users won't touch the data (and simply pass around
> const char * pointers).
> This new API you propose is probably fine, but I suspect it won't be
> of much use for now.
>
Ok, good point. I'd suggest otherwise just going with your patch, perhaps
with the tweaked name.
/Bruce
