Add functions which allow to remove strings in gadget
and configuration.

Signed-off-by: Krzysztof Opasiak <k.opas...@samsung.com>
---
 include/usbg/usbg.h |   16 ++++++++++++++++
 src/usbg.c          |   47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)

diff --git a/include/usbg/usbg.h b/include/usbg/usbg.h
index aa8ebc9..6c14cbc 100644
--- a/include/usbg/usbg.h
+++ b/include/usbg/usbg.h
@@ -277,6 +277,22 @@ extern usbg_config *usbg_get_config(usbg_gadget *g, const 
char *name);
  */
 extern int usbg_remove_binding(usbg_binding *b);
 
+/**
+ * @brief Remove configuration strings for given language
+ * @param c Pointer to configuration
+ * @param lang Language of strings which should be deleted
+ * @return 0 on success, usbg_error if error occurred
+ */
+extern int usbg_remove_config_strs(usbg_config *c, int lang);
+
+/**
+ * @brief Remove gadget strings for given language
+ * @param g Pointer to gadget
+ * @param lang Language of strings which should be deleted
+ * @return 0 on success, usbg_error if error occurred
+ */
+extern int usbg_remove_gadget_strs(usbg_gadget *g, int lang);
+
 /* USB gadget allocation and configuration */
 
 /**
diff --git a/src/usbg.c b/src/usbg.c
index e82658c..8f18047 100644
--- a/src/usbg.c
+++ b/src/usbg.c
@@ -467,6 +467,22 @@ static int usbg_remove_file(char *path, char *name)
        return ret;
 }
 
+static int usbg_remove_dir(char *path, char *name)
+{
+       int ret;
+       char buf[USBG_MAX_PATH_LENGTH];
+
+       sprintf(buf, "%s/%s", path, name);
+
+       ret = rmdir(buf);
+       if (ret != 0)
+               ret = usbg_translate_error(errno);
+       else
+               ret = USBG_SUCCESS;
+
+       return ret;
+}
+
 static int usbg_parse_function_net_attrs(usbg_function *f,
                usbg_function_attrs *f_attrs)
 {
@@ -993,6 +1009,37 @@ int usbg_remove_binding(usbg_binding *b)
        return ret;
 }
 
+int usbg_remove_config_strs(usbg_config *c, int lang)
+{
+       int ret = USBG_SUCCESS;
+       char path[USBG_MAX_PATH_LENGTH];
+
+       if (!c)
+               return USBG_ERROR_INVALID_PARAM;
+
+       sprintf(path, "%s/%s/%s/0x%x", c->path, c->name, STRINGS_DIR, lang);
+
+       ret = usbg_remove_dir(path, "");
+
+       return ret;
+}
+
+int usbg_remove_gadget_strs(usbg_gadget *g, int lang)
+{
+       int ret = USBG_SUCCESS;
+       char path[USBG_MAX_PATH_LENGTH];
+
+       if (!g)
+               return USBG_ERROR_INVALID_PARAM;
+
+       sprintf(path, "%s/%s/%s/0x%x", g->path, g->name, STRINGS_DIR, lang);
+
+       ret = usbg_remove_dir(path, "");
+
+       return ret;
+}
+
+
 static int usbg_create_empty_gadget(usbg_state *s, char *name, usbg_gadget **g)
 {
        char gpath[USBG_MAX_PATH_LENGTH];
-- 
1.7.9.5

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