Re: [libvirt] [PATCH 5/6] util: add virNumToStr

Add virNumToStr(), which safely converts numbers into their string representation. Functions added: * virNumToStr_l * virNumToStr_ul --- src/util/virstring.c | 34 ++++++++++++++++++++++++++++++++++ src/util/virstring.h | 8 ++++++++ 2 files changed, 42 insertions(+) diff --git a/src/util/virstring.c b/src/util/virstring.c index 69abc26..f0d9e19 100644 --- a/src/util/virstring.c +++ b/src/util/virstring.c @@ -536,6 +536,40 @@ virStrToDouble(char const *s, return 0; } +/** + * Converts signed number to string representation. The caller is responsible + * for freeing the result. + */ +int +virNumToStr_l(long num, char **dst) +{ + int sz; + + sz = snprintf(NULL, 0, "%ld", num); + if (sz > 0 && VIR_ALLOC_N(*dst, sz + 1) < 0) + return -1; + + snprintf(*dst, sz + 1, "%ld", num); + return 0; +} + +/** + * Converts unsigned number to string representation. The caller is responsible + * for freeing the result. + */ +int +virNumToStr_ul(unsigned long num, char **dst) +{ + int sz; + + sz = snprintf(NULL, 0, "%lu", num); + if (sz > 0 && VIR_ALLOC_N(*dst, sz + 1) < 0) + return -1; + + snprintf(*dst, sz + 1, "%lu", num); + return 0; +} +