Commit: 62f2b751f8c2c94bd783ce3d9bef6fc5c7d783c7
Author: Campbell Barton
Date:   Tue Jan 6 11:05:08 2015 +1100
Branches: master
https://developer.blender.org/rB62f2b751f8c2c94bd783ce3d9bef6fc5c7d783c7

UI: refactor button string get/set into functions.

===================================================================

M       source/blender/editors/interface/interface.c

===================================================================

diff --git a/source/blender/editors/interface/interface.c 
b/source/blender/editors/interface/interface.c
index 69ff1e7..0b1d1c8 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -2164,6 +2164,32 @@ bool ui_but_string_set_eval_num(bContext *C, uiBut *but, 
const char *str, double
        return ok;
 }
 
+/* just the assignment/free part */
+static void ui_but_string_set_internal(uiBut *but, const char *str, size_t 
str_len)
+{
+       BLI_assert(str_len == strlen(str));
+       BLI_assert(but->str == NULL);
+       str_len += 1;
+
+       if (str_len > UI_MAX_NAME_STR) {
+               but->str = MEM_mallocN(str_len, "ui_def_but str");
+       }
+       else {
+               but->str = but->strdata;
+       }
+       memcpy(but->str, str, str_len);
+}
+
+static void ui_but_string_free_internal(uiBut *but)
+{
+       if (but->str) {
+               if (but->str != but->strdata) {
+                       MEM_freeN(but->str);
+               }
+               /* must call 'ui_but_string_set_internal' after */
+               but->str = NULL;
+       }
+}
 
 bool ui_but_string_set(bContext *C, uiBut *but, const char *str)
 {
@@ -2647,18 +2673,9 @@ void ui_but_update(uiBut *but)
                                                if 
(RNA_property_enum_name_gettexted(but->block->evil_C,
                                                                                
     &but->rnapoin, but->rnaprop, value, &buf))
                                                {
-                                                       if (but->str == 
but->strdata) {
-                                                               if (strlen(buf) 
< sizeof(but->strdata)) {
-                                                                       
BLI_strncpy(but->str, buf, sizeof(but->strdata));
-                                                               }
-                                                               else {
-                                                                       
but->str = BLI_strdup(buf);
-                                                               }
-                                                       }
-                                                       else {
-                                                               
MEM_SAFE_FREE(but->str);
-                                                               but->str = 
BLI_strdup(buf);
-                                                       }
+                                                       size_t slen = 
strlen(buf);
+                                                       
ui_but_string_free_internal(but);
+                                                       
ui_but_string_set_internal(but, buf, slen);
                                                }
                                        }
                                }
@@ -3066,13 +3083,7 @@ static uiBut *ui_def_but(uiBlock *block, int type, int 
retval, const char *str,
        but->retval = retval;
 
        slen = strlen(str);
-       if (slen >= UI_MAX_NAME_STR) {
-               but->str = MEM_mallocN(slen + 1, "ui_def_but str");
-       }
-       else {
-               but->str = but->strdata;
-       }
-       memcpy(but->str, str, slen + 1);
+       ui_but_string_set_internal(but, str, slen);
 
        but->rect.xmin = x;
        but->rect.ymin = y;

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