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util: Extract locale-related fixes into separate functions 

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Martin Kletzander 2017-06-22 14:36:53 +02:00 committed by Peter Krempa
parent c578b515cb
commit 8110b4e073
1 changed files with 75 additions and 39 deletions
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114
src/util/virstring.c
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@ -521,19 +521,81 @@ virStrToLong_ullp(char const *s, char **end_ptr, int base,
/* In case thread-safe locales are available */
#if HAVE_NEWLOCALE
static locale_t virLocale;
typedef locale_t virLocale;
static virLocale virLocaleRaw;
static int
virLocaleOnceInit(void)
{
virLocale = newlocale(LC_ALL_MASK, "C", (locale_t)0);
if (!virLocale)
virLocaleRaw = newlocale(LC_ALL_MASK, "C", (locale_t)0);
if (!virLocaleRaw)
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virLocale);
#endif
/**
* virLocaleSetRaw:
*
* @oldlocale: set to old locale pointer
*
* Sets the locale to 'C' to allow operating on non-localized objects.
* Returns 0 on success -1 on error.
*/
static int
virLocaleSetRaw(virLocale *oldlocale)
{
if (virLocaleInitialize() < 0)
return -1;
*oldlocale = uselocale(virLocaleRaw);
return 0;
}
static void
virLocaleRevert(virLocale *oldlocale)
{
uselocale(*oldlocale);
}
static void
virLocaleFixupRadix(char **strp ATTRIBUTE_UNUSED)
{
}
#else /* !HAVE_NEWLOCALE */
typedef int virLocale;
static int
virLocaleSetRaw(virLocale *oldlocale ATTRIBUTE_UNUSED)
{
return 0;
}
static void
virLocaleRevert(virLocale *oldlocale ATTRIBUTE_UNUSED)
{
}
static void
virLocaleFixupRadix(char **strp)
{
char *radix, *tmp;
struct lconv *lc;
lc = localeconv();
radix = lc->decimal_point;
tmp = strstr(*strp, radix);
if (tmp) {
*tmp = '.';
if (strlen(radix) > 1)
memmove(tmp + 1, tmp + strlen(radix), strlen(*strp) - (tmp - *strp));
}
}
#endif /* !HAVE_NEWLOCALE */
/**
* virStrToDouble
@ -547,22 +609,17 @@ virStrToDouble(char const *s,
char **end_ptr,
double *result)
{
virLocale oldlocale;
double val;
char *p;
int err;
errno = 0;
#if HAVE_NEWLOCALE
locale_t old_loc;
if (virLocaleInitialize() < 0)
if (virLocaleSetRaw(&oldlocale) < 0)
return -1;
old_loc = uselocale(virLocale);
#endif
val = strtod(s, &p); /* exempt from syntax-check */
#if HAVE_NEWLOCALE
uselocale(old_loc);
#endif
virLocaleRevert(&oldlocale);
err = (errno || (!end_ptr && *p) || p == s);
if (end_ptr)
*end_ptr = p;
@ -582,38 +639,17 @@ virStrToDouble(char const *s,
int
virDoubleToStr(char **strp, double number)
{
virLocale oldlocale;
int ret = -1;
#if HAVE_NEWLOCALE
if (virLocaleSetRaw(&oldlocale) < 0)
return -1;
locale_t old_loc;
if (virLocaleInitialize() < 0)
goto error;
old_loc = uselocale(virLocale);
ret = virAsprintf(strp, "%lf", number);
uselocale(old_loc);
#else
virLocaleRevert(&oldlocale);
virLocaleFixupRadix(strp);
char *radix, *tmp;
struct lconv *lc;
if ((ret = virAsprintf(strp, "%lf", number) < 0))
goto error;
lc = localeconv();
radix = lc->decimal_point;
tmp = strstr(*strp, radix);
if (tmp) {
*tmp = '.';
if (strlen(radix) > 1)
memmove(tmp + 1, tmp + strlen(radix), strlen(*strp) - (tmp - *strp));
}
#endif /* HAVE_NEWLOCALE */
error:
return ret;
}