_dbus_string_to_lower(): new function

2 files changed, 44 insertions, 0 deletions

diff --git a/dbus/dbus-string.c b/dbus/dbus-string.c
index d9cf18ed..227f1411 100644
--- a/dbus/dbus-string.c
+++ b/dbus/dbus-string.c
@@ -26,6 +26,8 @@
 #include "dbus-string.h"
 /* we allow a system header here, for speed/convenience */
 #include <string.h>
+#include <ctype.h>
+
 /* for vsnprintf */
 #include <stdio.h>
 #define DBUS_CAN_USE_DBUS_STRING_PRIVATE 1
@@ -2749,6 +2751,41 @@ _dbus_string_validate_ascii (const DBusString *str,
 }
 
 /**
+ * converts the given range of the string to lower case 
+ *
+ * @param str the string
+ * @param start first byte index to convert
+ * @param len number of bytes to convert
+ * @returns #TRUE if the byte range exists
+ */
+dbus_bool_t
+_dbus_string_to_lower (const DBusString *str,
+                       int               start,
+                       int               len)
+{
+  unsigned char *s;
+  unsigned char *end;
+  DBUS_CONST_STRING_PREAMBLE (str);
+  _dbus_assert (start >= 0);
+  _dbus_assert (start <= real->len);
+  _dbus_assert (len >= 0);
+  
+  if (len > real->len - start)
+    return FALSE;
+  
+  s = real->str + start;
+  end = s + len;
+  while (s != end)
+    {
+      if (isupper(*s))
+        *s = tolower(*s);
+      ++s;
+    }
+  
+  return TRUE;
+}
+
+/**
  * Checks that the given range of the string is valid UTF-8. If the
  * given range is not entirely contained in the string, returns
  * #FALSE. If the string contains any nul bytes in the given range,
diff --git a/dbus/dbus-string.h b/dbus/dbus-string.h
index 7c301119..dbea3330 100644
--- a/dbus/dbus-string.h
+++ b/dbus/dbus-string.h
@@ -43,7 +43,11 @@ typedef struct DBusString DBusString;
 
 struct DBusString
 {
+#ifdef _DEBUG
+  char *dummy1; /**< placeholder */
+#else
   const void *dummy1; /**< placeholder */
+#endif
   int   dummy2;       /**< placeholder */
   int   dummy3;       /**< placeholder */
   int   dummy4;       /**< placeholder */
@@ -284,6 +288,9 @@ dbus_bool_t   _dbus_string_hex_decode            (const DBusString  *source,
 						  int               *end_return,
                                                   DBusString        *dest,
                                                   int                insert_at);
+dbus_bool_t   _dbus_string_to_lower              (const DBusString *str,
+                                                  int               start,
+                                                  int               len);
 dbus_bool_t   _dbus_string_validate_ascii        (const DBusString  *str,
                                                   int                start,
                                                   int                len);