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From a2798982df8432b5d26f247516ca5a43e0a94c58 Mon Sep 17 00:00:00 2001
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Message-Id: <a2798982df8432b5d26f247516ca5a43e0a94c58@dist-git>
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From: Michal Privoznik <mprivozn@redhat.com>
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Date: Mon, 9 Apr 2018 15:46:48 +0200
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Subject: [PATCH] util: Introduce virStringListMerge
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://bugzilla.redhat.com/show_bug.cgi?id=1564996
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For two string lists merge one into the other one.
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 72bf14d3456373130cd47157c0062e9125318716)
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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Reviewed-by: Andrea Bolognani <abologna@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/libvirt_private.syms | 1 +
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src/util/virstring.c | 36 ++++++++++++++++++++++++++++++++++++
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src/util/virstring.h | 3 +++
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3 files changed, 40 insertions(+)
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diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
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index 9c64d0cb97..15cc83931a 100644
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--- a/src/libvirt_private.syms
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+++ b/src/libvirt_private.syms
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@@ -2775,6 +2775,7 @@ virStringListGetFirstWithPrefix;
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virStringListHasString;
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virStringListJoin;
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virStringListLength;
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+virStringListMerge;
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virStringListRemove;
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virStringMatch;
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virStringParsePort;
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diff --git a/src/util/virstring.c b/src/util/virstring.c
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index b2ebce27ff..47d9efba25 100644
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--- a/src/util/virstring.c
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+++ b/src/util/virstring.c
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@@ -239,6 +239,42 @@ virStringListRemove(char ***strings,
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}
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+/**
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+ * virStringListMerge:
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+ * @dst: a NULL-terminated array of strings to expand
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+ * @src: a NULL-terminated array of strings
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+ *
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+ * Merges @src into @dst. Upon successful return from this
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+ * function, @dst is resized to $(dst + src) elements and @src is
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+ * freed.
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+ *
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+ * Returns 0 on success, -1 otherwise.
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+ */
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+int
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+virStringListMerge(char ***dst,
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+ char ***src)
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+{
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+ size_t dst_len, src_len, i;
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+
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+ if (!src || !*src)
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+ return 0;
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+
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+ dst_len = virStringListLength((const char **) *dst);
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+ src_len = virStringListLength((const char **) *src);
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+
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+ if (VIR_REALLOC_N(*dst, dst_len + src_len + 1) < 0)
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+ return -1;
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+
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+ for (i = 0; i <= src_len; i++)
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+ (*dst)[i + dst_len] = (*src)[i];
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+
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+ /* Don't call virStringListFree() as it would free strings in
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+ * @src. */
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+ VIR_FREE(*src);
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+ return 0;
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+}
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+
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+
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/**
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* virStringListCopy:
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* @dst: where to store the copy of @strings
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diff --git a/src/util/virstring.h b/src/util/virstring.h
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index cfd91be314..1fd43f98b7 100644
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--- a/src/util/virstring.h
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+++ b/src/util/virstring.h
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@@ -46,6 +46,9 @@ char **virStringListAdd(const char **strings,
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void virStringListRemove(char ***strings,
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const char *item);
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+int virStringListMerge(char ***dst,
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+ char ***src);
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+
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int virStringListCopy(char ***dst,
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const char **src);
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--
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2.17.0
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