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util: New function ovs_scan().

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This new function is essentially an implementation of sscanf() with
slightly different behavior (see the comment) that is more convenient for
Open vSwitch internal use.  Also, this implementation ought to work out of
the box on Windows, which has a defective sscanf() that lacks the 'hh'
modifier required to scan into a char variable.

Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2013-11-15 08:54:56 -08:00
parent 1af1ed8500
commit ed2232fc77
5 changed files with 982 additions and 1 deletions
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2
lib/compiler.h
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@@ -28,6 +28,7 @@
#define NO_RETURN __attribute__((__noreturn__))
#define OVS_UNUSED __attribute__((__unused__))
#define PRINTF_FORMAT(FMT, ARG1) __attribute__((__format__(printf, FMT, ARG1)))
#define SCANF_FORMAT(FMT, ARG1) __attribute__((__format__(scanf, FMT, ARG1)))
#define STRFTIME_FORMAT(FMT) __attribute__((__format__(__strftime__, FMT, 0)))
#define MALLOC_LIKE __attribute__((__malloc__))
#define ALWAYS_INLINE __attribute__((always_inline))
@@ -39,6 +40,7 @@
#define NO_RETURN
#define OVS_UNUSED
#define PRINTF_FORMAT(FMT, ARG1)
#define SCANF_FORMAT(FMT, ARG1)
#define STRFTIME_FORMAT(FMT)
#define MALLOC_LIKE
#define ALWAYS_INLINE