[libvirt] [PATCH 4/8] virstring: Introduce virStringListRemove
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virstring.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virstring.h | 3 +++
tests/virstringtest.c | 38 ++++++++++++++++++++++++++++++++++++
4 files changed, 92 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index bd46e5f..b1f42f2 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2465,6 +2465,7 @@ virStringListGetFirstWithPrefix;
virStringListHasString;
virStringListJoin;
virStringListLength;
+virStringListRemove;
virStringReplace;
virStringSearch;
virStringSortCompare;
diff --git a/src/util/virstring.c b/src/util/virstring.c
index d2fb543..7d2c4c7 100644
--- a/src/util/virstring.c
+++ b/src/util/virstring.c
@@ -206,6 +206,56 @@ virStringListAdd(const char **strings,
/**
+ * virStringListRemove:
+ * @strings: a NULL-terminated array of strings
+ * @newStrings: new NULL-terminated array of strings
+ * @item: string to remove
+ *
+ * Creates new strings list with all strings duplicated except
+ * for every occurrence of @item. Callers is responsible for
+ * freeing both @strings and returned list.
+ *
+ * Returns the number of items in the new list (excluding NULL
+ * anchor), -1 on error.
+ */
+int
+virStringListRemove(const char **strings,
+ char ***newStrings,
+ const char *item)
+{
+ char **ret = NULL;
+ size_t i, j = 0;
+
+ for (i = 0; strings && strings[i]; i++) {
+ if (STRNEQ(strings[i], item))
+ j++;
+ }
+
+ if (!j) {
+ *newStrings = NULL;
+ return 0;
+ }
+
+ if (VIR_ALLOC_N(ret, j + 1) < 0)
+ goto error;
+
+ for (i = 0, j = 0; strings[i]; i++) {
+ if (STREQ(strings[i], item))
+ continue;
+ if (VIR_STRDUP(ret[j], strings[i]) < 0)
+ goto error;
+ j++;
+ }
+
+ *newStrings = ret;
+ return j;
+ error:
+ virStringListFree(ret);
+ return -1;
+}
+
+
+/**
* virStringListFree:
* @str_array: a NULL-terminated array of strings to free
*
diff --git a/src/util/virstring.h b/src/util/virstring.h
index da9d35c..88eacd4 100644
--- a/src/util/virstring.h
+++ b/src/util/virstring.h
@@ -43,6 +43,9 @@ char *virStringListJoin(const char **strings,
char **virStringListAdd(const char **strings,
const char *item);
+int virStringListRemove(const char **strings,
+ char ***newStrings,
+ const char *item);
void virStringListFree(char **strings);
void virStringListFreeCount(char **strings,
diff --git a/tests/virstringtest.c b/tests/virstringtest.c
index 43657c8..a421f7b 100644
--- a/tests/virstringtest.c
+++ b/tests/virstringtest.c
@@ -162,6 +162,42 @@ static int testAdd(const void *args)
}
+static int testRemove(const void *args)
+{
+ const struct testSplitData *data = args;
+ char **list = NULL;
+ size_t ntokens;
+ size_t i;
+ int ret = -1;
+
+ if (!(list = virStringSplitCount(data->string, data->delim,
+ data->max_tokens, &ntokens))) {
+ VIR_DEBUG("Got no tokens at all");
+ return -1;
+ }
+
+ for (i = 0; data->tokens[i]; i++) {
+ char **tmp;
+ if (virStringListRemove((const char **) list,
+ &tmp, data->tokens[i]) < 0)
+ goto cleanup;
+ virStringListFree(list);
+ list = tmp;
+ tmp = NULL;
+ }
+
+ if (list && list[0]) {
+ virFilePrintf(stderr, "Not removed all tokens: %s", list[0]);
+ goto cleanup;
+ }
+
+ ret = 0;
+ cleanup:
+ virStringListFree(list);
+ return ret;
+}
+
+
static bool fail;
static const char *
@@ -636,6 +672,8 @@ mymain(void)
ret = -1; \
if (virTestRun("Add " #str, testAdd, &joinData) < 0)
\
ret = -1; \
+ if (virTestRun("Remove " #str, testRemove, &splitData) < 0)
\
+ ret = -1; \
} while (0)
const char *tokens1[] = { NULL };
--
2.8.4