/soc/2013/ankitkv/gobjectification: 1adfec3dcff6: Added purple_v...

[Ankit Vani]

Changeset: 1adfec3dcff68df07e968d800d036a9b6348c372
Author:	 Ankit Vani <a at nevitus.org>
Date:	 2014-01-20 03:02 +0530
Branch:	 soc.2013.gobjectification.plugins
URL: https://hg.pidgin.im/soc/2013/ankitkv/gobjectification/rev/1adfec3dcff6

Description:

Added purple_version_strcmp.
Will use this for comparing "version" attribute of our XMLs in prefs migration.

diffstat:

 libpurple/util.c |  46 ++++++++++++++++++++++++++++++++++++++++++++++
 libpurple/util.h |  14 ++++++++++++++
 2 files changed, 60 insertions(+), 0 deletions(-)

diffs (80 lines):

diff --git a/libpurple/util.c b/libpurple/util.c
--- a/libpurple/util.c
+++ b/libpurple/util.c
@@ -3811,6 +3811,52 @@ purple_utf16_wipe(gunichar2 *str)
 	g_free(str);
 }
 
+gint
+purple_version_strcmp(const gchar *v1, const gchar *v2)
+{
+	gchar **version[2];
+	gint major[2] = {0}, minor[2] = {0}, micro[2] = {0};
+	gint i, t;
+
+	if (!v1 && v2)
+		return -1;
+	else if (v1 && !v2)
+		return 1;
+	else if (!v1 && !v2)
+		return 0;
+
+	version[0] = g_strsplit(v1, ".", 3);
+	version[1] = g_strsplit(v2, ".", 3);
+
+	for (i = 0; i < 2; ++i) {
+		major[i] = atoi(version[i][0]);
+
+		if (version[i][1]) {
+			minor[i] = atoi(version[i][1]);
+
+			if (version[i][2])
+				micro[i] = atoi(version[i][2]);
+		}
+
+		g_strfreev(version[i]);
+	}
+
+	t = major[0] - major[1];
+	if (t != 0)
+		return t < 0 ? -1 : 1;
+
+	t = minor[0] - minor[1];
+	if (t != 0)
+		return t < 0 ? -1 : 1;
+
+	t = micro[0] - micro[1];
+
+	if (t != 0)
+		return t < 0 ? -1 : 1;
+	else
+		return 0;
+}
+
 /**************************************************************************
  * URI/URL Functions
  **************************************************************************/
diff --git a/libpurple/util.h b/libpurple/util.h
--- a/libpurple/util.h
+++ b/libpurple/util.h
@@ -1178,6 +1178,20 @@ void purple_str_wipe(gchar *str);
  */
 void purple_utf16_wipe(gunichar2 *str);
 
+/**
+ * Compares two strings representing versions in the typical
+ * MAJOR.MINOR.MICRO format. Any characters after the micro version are
+ * ignored.
+ *
+ * @param v1 The first version to compare
+ * @param v2 The second version to compare
+ *
+ * @return -1 if @v1 is less than @v2.
+ *          0 if @v1 is equal to @v2.
+ *          1 if @v1 is greater than @v2.
+ */
+gint purple_version_strcmp(const gchar *v1, const gchar *v2);
+
 /*@}*/