(add): Respect `0' padding flag.

diff --git a/time/strftime.c b/time/strftime.c
index 898bd6c98c5f878cbc4d522f61c4da3bcfc8626f..4cb6c9e26063d5ed9de81fc72c2edfea8aa683d4 100644 (file)
--- a/time/strftime.c
+++ b/time/strftime.c
@@ -175,6 +175,7 @@ localtime_r (t, tp)
 /* Some systems lack the `memset' function and we don't want to
    introduce additional dependencies.  */
 static const char spaces[16] = "                ";
+static const char zeroes[16] = "0000000000000000";
 
 # define memset_space(P, Len) \
   do {                                                                       \
@@ -189,11 +190,26 @@ static const char spaces[16] = "                ";
       }                                                                              \
     while (_len > 0);                                                        \
   } while (0)
+
+# define memset_zero(P, Len) \
+  do {                                                                       \
+    int _len = (Len);                                                        \
+                                                                             \
+    do                                                                       \
+      {                                                                              \
+       int _this = _len > 16 ? 16 : _len;                                    \
+       memcpy ((P), zeroes, _this);                                          \
+       (P) += _this;                                                         \
+       _len -= _this;                                                        \
+      }                                                                              \
+    while (_len > 0);                                                        \
+  } while (0)
 #else
 # define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
+# define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len))
 #endif
 
-#define        add(n, f) \
+#define        add(n, f)                                                             \
   do                                                                         \
     {                                                                        \
       int _n = (n);                                                          \
@@ -204,7 +220,12 @@ static const char spaces[16] = "                ";
       if (p)                                                                 \
        {                                                                     \
          if (_delta > 0)                                                     \
-           memset_space (p, _delta);                                         \
+           {                                                                 \
+             if (pad == '0')                                                 \
+               memset_zero (p, _delta);                                      \
+             else                                                            \
+               memset_space (p, _delta);                                     \
+           }                                                                 \
          f;                                                                  \
          p += _n;                                                            \
        }                                                                     \