New function to strip surrounding whitespace from a string of categories

2001-08-16  Federico Mena Quintero  <federico@ximian.com>

	* gui/dialogs/comp-editor-util.c (comp_editor_strip_categories):
	New function to strip surrounding whitespace from a string of
	categories entered by the user.

	* gui/dialogs/task-page.c (task_page_fill_component): Use
	comp_editor_strip_categories().

	* gui/dialogs/event-page.c (event_page_fill_component): Likewise.

svn path=/trunk/; revision=12122

4 files changed, 84 insertions, 4 deletions

diff --git a/calendar/gui/dialogs/comp-editor-util.c b/calendar/gui/dialogs/comp-editor-util.c
index 8ef7aebbab..df682f6880 100644
--- a/calendar/gui/dialogs/comp-editor-util.c
+++ b/calendar/gui/dialogs/comp-editor-util.c
@@ -472,3 +472,74 @@ comp_editor_contacts_to_component (GtkWidget *contacts_entry,
 	}
 	g_slist_free (contact_list);
 }
+
+/**
+ * comp_editor_strip_categories:
+ * @categories: A string of category names entered by the user.
+ * 
+ * Takes a string of the form "categ, categ, categ, ..." and removes the
+ * whitespace between categories to result in "categ,categ,categ,..."
+ * 
+ * Return value: The category names stripped of surrounding whitespace
+ * and separated with commas.
+ **/
+char *
+comp_editor_strip_categories (const char *categories)
+{
+	char *new_categories;
+	const char *start, *end;
+	const char *p;
+	char *new_p;
+
+	if (!categories)
+		return NULL;
+
+	new_categories = g_new (char, strlen (categories) + 1);
+
+	start = end = NULL;
+	new_p = new_categories;
+
+	for (p = categories; *p; p++) {
+		int c;
+
+		c = *p;
+
+		if (isspace (c))
+			continue;
+		else if (c == ',') {
+			int len;
+
+			if (!start)
+				continue;
+
+			g_assert (start <= end);
+
+			len = end - start + 1;
+			strncpy (new_p, start, len);
+			new_p[len] = ',';
+			new_p += len + 1;
+
+			start = end = NULL;
+		} else {
+			if (!start) {
+				start = p;
+				end = p;
+			} else
+				end = p;
+		}
+	}
+
+	if (start) {
+		int len;
+
+		g_assert (start <= end);
+
+		len = end - start + 1;
+		strncpy (new_p, start, len);
+		new_p += len;
+	}
+
+	*new_p = '\0';
+
+	return new_categories;
+}
diff --git a/calendar/gui/dialogs/comp-editor-util.h b/calendar/gui/dialogs/comp-editor-util.h
index 45c45a72a3..0654289698 100644
--- a/calendar/gui/dialogs/comp-editor-util.h
+++ b/calendar/gui/dialogs/comp-editor-util.h
@@ -47,5 +47,6 @@ void comp_editor_contacts_to_widget (GtkWidget *contacts_entry,
 void comp_editor_contacts_to_component (GtkWidget *contacts_entry,
 					CalComponent *comp);
 
+char *comp_editor_strip_categories (const char *categories);
 
 #endif
diff --git a/calendar/gui/dialogs/event-page.c b/calendar/gui/dialogs/event-page.c
index a3947b1cba..8f9d974178 100644
--- a/calendar/gui/dialogs/event-page.c
+++ b/calendar/gui/dialogs/event-page.c
@@ -644,11 +644,15 @@ event_page_fill_component (CompEditorPage *page, CalComponent *comp)
 	/* Categories */
 
 	cat = e_dialog_editable_get (priv->categories);
-	cal_component_set_categories (comp, cat);
-
+	str = comp_editor_strip_categories (cat);
 	if (cat)
 		g_free (cat);
 
+	cal_component_set_categories (comp, str);
+
+	if (str)
+		g_free (str);
+
 	/* Classification */
 
 	classif = e_dialog_radio_get (priv->classification_public,
diff --git a/calendar/gui/dialogs/task-page.c b/calendar/gui/dialogs/task-page.c
index f6ad6da413..84eb1017d4 100644
--- a/calendar/gui/dialogs/task-page.c
+++ b/calendar/gui/dialogs/task-page.c
@@ -533,11 +533,15 @@ task_page_fill_component (CompEditorPage *page, CalComponent *comp)
 
 	/* Categories */
 	cat = e_dialog_editable_get (priv->categories);
-	cal_component_set_categories (comp, cat);
-
+	str = comp_editor_strip_categories (cat);
 	if (cat)
 		g_free (cat);
 
+	cal_component_set_categories (comp, str);
+
+	if (str)
+		g_free (str);
+
 	/* Contacts */
 	comp_editor_contacts_to_component (priv->contacts_entry, comp);
 }