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| author | Thomas Haller <thaller@redhat.com> | 2021-06-02 19:05:44 +0200 |
|---|---|---|
| committer | Thomas Haller <thaller@redhat.com> | 2021-06-04 09:29:12 +0200 |
| commit | 9a0f3f3e0979a7f65d9c4b015624de1d59b11c0f (patch) | |
| tree | 01f50ba8a5236260df03a2275d4fefd9a1420182 | |
| parent | 74f9272d3d9e277b796c3360dbac7f5e4a352bd0 (diff) | |
| download | NetworkManager-9a0f3f3e0979a7f65d9c4b015624de1d59b11c0f.tar.gz | |
glib-aux: add nm_utils_strv_dup_shallow_maybe_a() helper
| -rw-r--r-- | src/libnm-glib-aux/nm-shared-utils.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/libnm-glib-aux/nm-shared-utils.h b/src/libnm-glib-aux/nm-shared-utils.h index 4493e73bd5..024b68d676 100644 --- a/src/libnm-glib-aux/nm-shared-utils.h +++ b/src/libnm-glib-aux/nm-shared-utils.h @@ -1907,6 +1907,34 @@ const char **_nm_utils_strv_dup_packed(const char *const *strv, gssize len); #define nm_utils_strv_dup_packed(strv, len) _nm_utils_strv_dup_packed(NM_CAST_STRV_CC(strv), (len)) +#define nm_utils_strv_dup_shallow_maybe_a(alloca_maxlen, strv, len, to_free) \ + ({ \ + const char *const *const _strv = NM_CAST_STRV_CC(strv); \ + const gssize _len = (len); \ + const char ** _result = NULL; \ + const char ***const _to_free = (to_free); \ + \ + G_STATIC_ASSERT_EXPR((alloca_maxlen) <= 500u / sizeof(const char *)); \ + G_STATIC_ASSERT_EXPR((alloca_maxlen) > 0u); \ + nm_assert(_to_free && !*_to_free); \ + \ + if (_len >= 0 || _strv) { \ + const gsize _l = (_len < 0) ? NM_PTRARRAY_LEN(_strv) : ((gsize) _len); \ + \ + if (G_LIKELY(_l < (alloca_maxlen))) { \ + _result = g_newa(const char *, _l + 1); \ + } else { \ + _result = g_new(const char *, _l + 1); \ + *_to_free = _result; \ + } \ + if (_l > 0) \ + memcpy(_result, _strv, _l * sizeof(const char *)); \ + _result[_l] = NULL; \ + } \ + \ + _result; \ + }) + /*****************************************************************************/ GSList *nm_utils_g_slist_find_str(const GSList *list, const char *needle); |