On Wed, Jun 14, 2017 at 01:24:42PM -0300, Julio Faracco wrote:
Following the GNU Documentation, functions to convert double/float to string and vice versa, use the locale to set the mantissa separator. Some languages use comma and other use dot as a separator.For example: 1,212.67 (en_US) = 1.112,67 (pt_BR). This can be used to parse values in float/double from XML and other definition files. Signed-off-by: Julio Faracco <jcfara...@gmail.com> --- src/libvirt_private.syms | 1 + src/util/virstring.c | 31 +++++++++++++++++++++++++++++++ src/util/virstring.h | 4 ++++ 3 files changed, 36 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 044510f..9d791e6 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2659,6 +2659,7 @@ virStringTrimOptionalNewline; virStrncpy; virStrndup; virStrToDouble; +virStrToDoubleSafe; virStrToLong_i; virStrToLong_l; virStrToLong_ll; diff --git a/src/util/virstring.c b/src/util/virstring.c index 089b539..6dad00f 100644 --- a/src/util/virstring.c +++ b/src/util/virstring.c @@ -537,6 +537,37 @@ virStrToDouble(char const *s, } int +virStrToDoubleSafe(char const *s, + char **end_ptr, + double *result) +{ + char *cur_locale = NULL; + char *saved_locale = NULL; + int ret = -1; + + cur_locale = setlocale (LC_ALL, NULL); + if (!cur_locale) + return ret; + + if (VIR_STRDUP(saved_locale, cur_locale) < 0) + goto cleanup; + + if (!setlocale (LC_ALL, "C")) + goto cleanup; +
This is MT-Unsafe. We cannot set this for the whole process, so NACK to this approach. You need to use uselocale() as in commit 43bfa23e6f96 (or just see virDoubleToStr()). Martin
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