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shared: add nm_strv_ptrarray_*() helpers

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These are simple macros/functions that append a heap-allocated string to
a GPtrArray. It is intended for a GPtrArray which takes ownership of the
strings (meaning, it has a g_free() GDestroyNotify).
This commit is contained in:
Thomas Haller 2018-11-29 09:35:15 +01:00
parent 8b87cd9ddf
commit c54a2ed82f
1 changed files with 71 additions and 0 deletions
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71
shared/nm-utils/nm-shared-utils.h
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@ -296,6 +296,37 @@ nm_memdup (gconstpointer data, gsize size)
/*****************************************************************************/
/* generic macro to convert an int to a (heap allocated) string.
*
* Usually, an inline function nm_strdup_int64() would be enough. However,
* that cannot be used for guint64. So, we would also need nm_strdup_uint64().
* This causes suble error potential, because the caller needs to ensure to
* use the right one (and compiler isn't going to help as it silently casts).
*
* Instead, this generic macro is supposed to handle all integers correctly. */
#if _NM_CC_SUPPORT_GENERIC
#define nm_strdup_int(val) \
_Generic ((val), \
gint8: g_strdup_printf ("%d", (int) (val)), \
gint16: g_strdup_printf ("%d", (int) (val)), \
gint32: g_strdup_printf ("%d", (int) (val)), \
gint64: g_strdup_printf ("%"G_GINT64_FORMAT, (gint64) (val)), \
\
guint8: g_strdup_printf ("%u", (guint) (val)), \
guint16: g_strdup_printf ("%u", (guint) (val)), \
guint32: g_strdup_printf ("%u", (guint) (val)), \
guint64: g_strdup_printf ("%"G_GUINT64_FORMAT, (guint64) (val)) \
)
#else
#define nm_strdup_int(val) \
( ( sizeof (val) == sizeof (guint64) \
&& ((typeof (val)) -1) > 0) \
? g_strdup_printf ("%"G_GUINT64_FORMAT, (guint64) (val)) \
: g_strdup_printf ("%"G_GINT64_FORMAT, (gint64) (val)))
#endif
/*****************************************************************************/
extern const void *const _NM_PTRARRAY_EMPTY[1];
#define NM_PTRARRAY_EMPTY(type) ((type const*) _NM_PTRARRAY_EMPTY)
@ -959,4 +990,44 @@ void nm_utils_invoke_on_idle (NMUtilsInvokeOnIdleCallback callback,
gpointer callback_user_data,
GCancellable *cancellable);
/*****************************************************************************/
static inline void
nm_strv_ptrarray_add_string_take (GPtrArray *cmd,
char *str)
{
nm_assert (cmd);
nm_assert (str);
g_ptr_array_add (cmd, str);
}
static inline void
nm_strv_ptrarray_add_string_dup (GPtrArray *cmd,
const char *str)
{
nm_strv_ptrarray_add_string_take (cmd,
g_strdup (str));
}
#define nm_strv_ptrarray_add_string_concat(cmd, ...) \
nm_strv_ptrarray_add_string_take ((cmd), g_strconcat (__VA_ARGS__, NULL))
#define nm_strv_ptrarray_add_string_printf(cmd, ...) \
nm_strv_ptrarray_add_string_take ((cmd), g_strdup_printf (__VA_ARGS__))
#define nm_strv_ptrarray_add_int(cmd, val) \
nm_strv_ptrarray_add_string_take ((cmd), nm_strdup_int (val))
static inline void
nm_strv_ptrarray_take_gstring (GPtrArray *cmd,
GString **gstr)
{
nm_assert (gstr && *gstr);
nm_strv_ptrarray_add_string_take (cmd,
g_string_free (g_steal_pointer (gstr),
FALSE));
}
#endif /* __NM_SHARED_UTILS_H__ */