[dpdk-dev,v3,1/4] cfgfile: remove EAL dependency
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Commit Message
This patch removes the dependency to EAL in cfgfile library.
Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
---
lib/librte_cfgfile/Makefile | 1 +
lib/librte_cfgfile/rte_cfgfile.c | 29 +++++++++++++++++------------
2 files changed, 18 insertions(+), 12 deletions(-)
Comments
On Tue, Jun 27, 2017 at 12:26:47PM +0200, Jacek Piasecki wrote:
> This patch removes the dependency to EAL in cfgfile library.
>
> Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
> ---
> lib/librte_cfgfile/Makefile | 1 +
> lib/librte_cfgfile/rte_cfgfile.c | 29 +++++++++++++++++------------
> 2 files changed, 18 insertions(+), 12 deletions(-)
>
> diff --git a/lib/librte_cfgfile/Makefile b/lib/librte_cfgfile/Makefile
> index 755ef11..0bee43e 100644
> --- a/lib/librte_cfgfile/Makefile
> +++ b/lib/librte_cfgfile/Makefile
> @@ -38,6 +38,7 @@ LIB = librte_cfgfile.a
>
> CFLAGS += -O3
> CFLAGS += $(WERROR_FLAGS)
> +CFLAGS += -I$(SRCDIR)/../librte_eal/common/include
>
> EXPORT_MAP := rte_cfgfile_version.map
>
> diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c
> index b54a523..c6ae3e3 100644
> --- a/lib/librte_cfgfile/rte_cfgfile.c
> +++ b/lib/librte_cfgfile/rte_cfgfile.c
> @@ -36,7 +36,6 @@
> #include <string.h>
> #include <ctype.h>
> #include <rte_common.h>
> -#include <rte_string_fns.h>
>
> #include "rte_cfgfile.h"
>
> @@ -258,19 +257,25 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
>
> struct rte_cfgfile_section *sect =
> cfg->sections[curr_section];
> - int n;
> +
> char *split[2] = {NULL};
> - n = rte_strsplit(buffer, sizeof(buffer), split, 2, '=');
> - if (flags & CFG_FLAG_EMPTY_VALUES) {
> - if ((n < 1) || (n > 2)) {
> - printf("Error at line %d - cannot split string, n=%d\n",
> - lineno, n);
> - goto error1;
> - }
> + split[0] = buffer;
> + split[1] = memchr(buffer, '=', len);
> +
> + /* when delimeter not found */
> + if (split[1] == NULL) {
> + printf("Error at line %d - cannot "
> + "split string\n", lineno);
> + goto error1;
This check for NULL is not needed, as earlier in the function we find
the following:
if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL)
continue;
which means that there must be an "=" in buffer by the time we get to this
line.
> } else {
FYI, you don't need an else after a goto. Save indentation where we can!
:-)
/Bruce
On Fri, Jun 30, 2017 at 10:44:34AM +0100, Bruce Richardson wrote:
> On Tue, Jun 27, 2017 at 12:26:47PM +0200, Jacek Piasecki wrote:
> > This patch removes the dependency to EAL in cfgfile library.
> >
> > Signed-off-by: Jacek Piasecki <jacekx.piasecki@intel.com>
> > ---
> > lib/librte_cfgfile/Makefile | 1 +
> > lib/librte_cfgfile/rte_cfgfile.c | 29 +++++++++++++++++------------
> > 2 files changed, 18 insertions(+), 12 deletions(-)
> >
> > diff --git a/lib/librte_cfgfile/Makefile b/lib/librte_cfgfile/Makefile
> > index 755ef11..0bee43e 100644
> > --- a/lib/librte_cfgfile/Makefile
> > +++ b/lib/librte_cfgfile/Makefile
> > @@ -38,6 +38,7 @@ LIB = librte_cfgfile.a
> >
> > CFLAGS += -O3
> > CFLAGS += $(WERROR_FLAGS)
> > +CFLAGS += -I$(SRCDIR)/../librte_eal/common/include
> >
> > EXPORT_MAP := rte_cfgfile_version.map
> >
> > diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c
> > index b54a523..c6ae3e3 100644
> > --- a/lib/librte_cfgfile/rte_cfgfile.c
> > +++ b/lib/librte_cfgfile/rte_cfgfile.c
> > @@ -36,7 +36,6 @@
> > #include <string.h>
> > #include <ctype.h>
> > #include <rte_common.h>
> > -#include <rte_string_fns.h>
> >
> > #include "rte_cfgfile.h"
> >
> > @@ -258,19 +257,25 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
> >
> > struct rte_cfgfile_section *sect =
> > cfg->sections[curr_section];
> > - int n;
> > +
> > char *split[2] = {NULL};
> > - n = rte_strsplit(buffer, sizeof(buffer), split, 2, '=');
> > - if (flags & CFG_FLAG_EMPTY_VALUES) {
> > - if ((n < 1) || (n > 2)) {
> > - printf("Error at line %d - cannot split string, n=%d\n",
> > - lineno, n);
> > - goto error1;
> > - }
> > + split[0] = buffer;
> > + split[1] = memchr(buffer, '=', len);
> > +
> > + /* when delimeter not found */
> > + if (split[1] == NULL) {
> > + printf("Error at line %d - cannot "
> > + "split string\n", lineno);
> > + goto error1;
>
> This check for NULL is not needed, as earlier in the function we find
> the following:
>
> if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL)
> continue;
>
> which means that there must be an "=" in buffer by the time we get to this
> line.
>
> > } else {
>
> FYI, you don't need an else after a goto. Save indentation where we can!
> :-)
>
I see now that a later patch removes this unneeded "if", but it might be
better to move the removal back to this patch instead.
/Bruce
@@ -38,6 +38,7 @@ LIB = librte_cfgfile.a
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
+CFLAGS += -I$(SRCDIR)/../librte_eal/common/include
EXPORT_MAP := rte_cfgfile_version.map
@@ -36,7 +36,6 @@
#include <string.h>
#include <ctype.h>
#include <rte_common.h>
-#include <rte_string_fns.h>
#include "rte_cfgfile.h"
@@ -258,19 +257,25 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
struct rte_cfgfile_section *sect =
cfg->sections[curr_section];
- int n;
+
char *split[2] = {NULL};
- n = rte_strsplit(buffer, sizeof(buffer), split, 2, '=');
- if (flags & CFG_FLAG_EMPTY_VALUES) {
- if ((n < 1) || (n > 2)) {
- printf("Error at line %d - cannot split string, n=%d\n",
- lineno, n);
- goto error1;
- }
+ split[0] = buffer;
+ split[1] = memchr(buffer, '=', len);
+
+ /* when delimeter not found */
+ if (split[1] == NULL) {
+ printf("Error at line %d - cannot "
+ "split string\n", lineno);
+ goto error1;
} else {
- if (n != 2) {
- printf("Error at line %d - cannot split string, n=%d\n",
- lineno, n);
+ /* when delimeter found */
+ *split[1] = '\0';
+ split[1]++;
+
+ if (!(flags & CFG_FLAG_EMPTY_VALUES) &&
+ (*split[1] == '\0')) {
+ printf("Error at line %d - cannot "
+ "split string\n", lineno);
goto error1;
}
}