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From 85d127fd52a8469f9f3ce0d1130fe17e756fdd75 Mon Sep 17 00:00:00 2001
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From: Sumit Bose <sbose@redhat.com>
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Date: Fri, 16 Nov 2018 13:32:33 +0100
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Subject: [PATCH 1/2] adutil: add _adcli_strv_add_unique
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_adcli_strv_add_unique checks is the new value already exists in the
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strv before adding it. Check can be done case-sensitive or not.
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Related to https://gitlab.freedesktop.org/realmd/adcli/issues/16
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---
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 library/adprivate.h |  5 ++++
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 library/adutil.c    | 65 ++++++++++++++++++++++++++++++++++++++-------
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 2 files changed, 61 insertions(+), 9 deletions(-)
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diff --git a/library/adprivate.h b/library/adprivate.h
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index bc9df6d..0806430 100644
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--- a/library/adprivate.h
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+++ b/library/adprivate.h
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@@ -111,6 +111,11 @@ char **        _adcli_strv_add               (char **strv,
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                                               char *string,
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                                               int *length) GNUC_WARN_UNUSED;
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+char **        _adcli_strv_add_unique        (char **strv,
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+                                              char *string,
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+                                              int *length,
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+                                              bool case_sensitive) GNUC_WARN_UNUSED;
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+
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 void           _adcli_strv_remove_unsorted   (char **strv,
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                                               const char *string,
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                                               int *length);
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diff --git a/library/adutil.c b/library/adutil.c
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index 17d2caa..76ea158 100644
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--- a/library/adutil.c
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+++ b/library/adutil.c
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@@ -221,6 +221,34 @@ _adcli_strv_add (char **strv,
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 	return seq_push (strv, length, string);
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 }
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+static int
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+_adcli_strv_has_ex (char **strv,
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+                    const char *str,
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+                    int (* compare) (const char *match, const char*value))
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+{
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+	int i;
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+
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+	for (i = 0; strv && strv[i] != NULL; i++) {
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+		if (compare (strv[i], str) == 0)
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+			return 1;
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+	}
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+
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+	return 0;
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+}
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+
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+char **
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+_adcli_strv_add_unique (char **strv,
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+                        char *string,
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+                        int *length,
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+                        bool case_sensitive)
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+{
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+	if (_adcli_strv_has_ex (strv, string, case_sensitive ? strcmp : strcasecmp) == 1) {
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+		return strv;
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+	}
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+
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+	return _adcli_strv_add (strv, string, length);
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+}
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+
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 #define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
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 void
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@@ -241,19 +269,11 @@ _adcli_strv_remove_unsorted (char **strv,
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 	                            (seq_compar)strcasecmp, free);
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 }
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-
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 int
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 _adcli_strv_has (char **strv,
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                  const char *str)
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 {
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-	int i;
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-
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-	for (i = 0; strv && strv[i] != NULL; i++) {
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-		if (strcmp (strv[i], str) == 0)
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-			return 1;
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-	}
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-
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-	return 0;
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+	return _adcli_strv_has_ex (strv, str, strcmp);
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 }
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 void
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@@ -704,6 +724,32 @@ test_strv_add_free (void)
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 	_adcli_strv_free (strv);
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 }
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+static void
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+test_strv_add_unique_free (void)
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+{
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+	char **strv = NULL;
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+
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+	strv = _adcli_strv_add_unique (strv, strdup ("one"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("one"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("two"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("two"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("tWo"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("three"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("three"), NULL, false);
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+	strv = _adcli_strv_add_unique (strv, strdup ("TWO"), NULL, true);
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+
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+	assert_num_eq (_adcli_strv_len (strv), 4);
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+
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+	assert_str_eq (strv[0], "one");
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+	assert_str_eq (strv[1], "two");
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+	assert_str_eq (strv[2], "three");
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+	assert_str_eq (strv[3], "TWO");
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+	assert (strv[4] == NULL);
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+
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+	_adcli_strv_free (strv);
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+}
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+
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+
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 static void
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 test_strv_dup (void)
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 {
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@@ -856,6 +902,7 @@ main (int argc,
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       char *argv[])
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 {
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 	test_func (test_strv_add_free, "/util/strv_add_free");
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+	test_func (test_strv_add_unique_free, "/util/strv_add_unique_free");
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 	test_func (test_strv_dup, "/util/strv_dup");
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 	test_func (test_strv_count, "/util/strv_count");
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 	test_func (test_check_nt_time_string_lifetime, "/util/check_nt_time_string_lifetime");
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-- 
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2.20.1
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