vbscript: Added LTrim() implementation.

dlls/vbscript/global.c

@@ -852,8 +852,29 @@ static HRESULT Global_UCase(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VAR
 
 static HRESULT Global_LTrim(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    BSTR str, conv_str = NULL;
+    WCHAR *ptr;
+    HRESULT hres;
+
+    TRACE("%s\n", debugstr_variant(arg));
+
+    if(V_VT(arg) == VT_BSTR) {
+        str = V_BSTR(arg);
+    }else {
+        hres = to_string(arg, &conv_str);
+        if(FAILED(hres))
+            return hres;
+        str = conv_str;
+    }
+
+    for(ptr = str; *ptr && isspaceW(*ptr); ptr++);
+
+    str = SysAllocString(ptr);
+    SysFreeString(conv_str);
+    if(!str)
+        return E_OUTOFMEMORY;
+
+    return return_bstr(res, str);
 }
 
 static HRESULT Global_RTrim(vbdisp_t *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)

dlls/vbscript/tests/api.vbs

@@ -237,6 +237,18 @@ TestTrim "", ""
 TestTrim 123, "123"
 if isEnglishLang then TestTrim true, "True"
 
+Sub TestLTrim(str, exstr)
+    Call ok(LTrim(str) = exstr, "LTrim(" & str & ") = " & LTrim(str))
+End Sub
+
+TestLTrim "   test    ", "test    "
+TestLTrim "test    ", "test    "
+TestLTrim "   test", "test"
+TestLTrim "test", "test"
+TestLTrim "", ""
+TestLTrim 123, "123"
+if isEnglishLang then TestLTrim true, "True"
+
 Sub TestRound(val, exval, vt)
     Call ok(Round(val) = exval, "Round(" & val & ") = " & Round(val))
     Call ok(getVT(Round(val)) = vt, "getVT(Round(" & val & ")) = " & getVT(Round(val)))